CN109452177B

CN109452177B - Milk cup

Info

Publication number: CN109452177B
Application number: CN201811560424.8A
Authority: CN
Inventors: 刘涛
Original assignee: Anhui Animal Husbandry Machinery Group Co Ltd
Current assignee: Anhui Animal Husbandry Machinery Group Co Ltd
Priority date: 2018-12-20
Filing date: 2018-12-20
Publication date: 2020-03-31
Anticipated expiration: 2038-12-20
Also published as: CN109452177A

Abstract

The invention discloses a milking cup, which comprises a milking cup and a milking cup liner, wherein the milking cup liner comprises a lip part, a conical cylinder part and a straight cylinder part, an air chamber is formed between the conical cylinder part and an inner cavity of the milking cup, a pulsating air pipe extending out of the milking cup is arranged in the air chamber, a sealing part is arranged at the joint of the straight cylinder part and the milking cup, and a caulking groove for embedding the sealing part is formed in the inner wall of the corresponding milking cup. According to the invention, the sealing part is arranged between the teatcup liner and the milking cup, so that the sealing property between the teatcup liner and the milking cup is greatly improved, and the milking effect is ensured; the sealing part realizes the effect of locking the straight cylinder part when the air chamber is ventilated by utilizing the structure of the sealing part, and realizes the effect of automatic sealing.

Description

Milk cup

Technical Field

The invention relates to the technical field of animal milking devices, in particular to a milking cup.

Background

In the process of dairy cow breeding, the extrusion of milk is roughly divided into manual milking and machine milking, as the demand of people on milk is continuously increased, the manual milking can not meet the demand of a large amount of milk, the prior art is common to use a vacuum milking machine, the milk cups in the vacuum milking machine are important parts for milking, the prior milking cups mostly directly sleeve the upper end and the lower end of a milk cup liner on the milk cups, and the milk cups are sealed by utilizing the sleeve, the connection mode is simple and easy to implement, but the milking is a high-frequency action process, and the milk cup liner has a conical structure, under the action of air flow, the milk cup liner can generate a lifting trend to the lower end of the milk cup liner, the sealing part of the lower end of the milk cup liner is easy to loosen in the long-time milking process, so that the sealing performance is influenced, and the milk cup liner can have micro deformation along with the repeated use, affecting the sealing performance in later use.

Disclosure of Invention

In view of the above technical disadvantages, an object of the present invention is to provide a teat cup, which improves the sealing between the teatcup liner and the teat cup.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides a milking cup, which comprises a milking cup and a milking cup liner nested in the milking cup, wherein the milking cup liner comprises a lip part positioned at the upper end of the milking cup, a conical cylinder part positioned in an inner cavity of the milking cup and a straight cylinder part extending out of the bottom end of the milking cup, the elastic modulus of a material used by the conical cylinder part is smaller than that of a material used by the straight cylinder part, the inner diameter of the conical cylinder part is gradually increased along the direction far away from the straight cylinder part, the lip part is tightly sealed at the upper end of the milking cup, an air chamber is formed between the conical cylinder part and the inner cavity of the milking cup, a pulsating air pipe extending out of the milking cup is arranged in the air chamber, a sealing part is arranged at the joint of the straight cylinder part and the milking cup, and a caulking groove for the sealing part to be embedded in is arranged on the inner wall of the corresponding.

Preferably, the sealing portion includes a sealing flange and a sealing ring nested on the sealing flange, the sealing flange and the sealing ring are both made of elastic materials, the elastic modulus of the material used for the sealing flange and the elastic modulus of the material used for the sealing ring are both smaller than the elastic modulus of the material used for the straight cylinder portion, the inner ring of the sealing flange includes an upper port and a lower port, the straight cylinder portion is tightly sealed in the lower port through the sealing ring, the inner ring of the sealing ring abuts against the sealing flange, at least a part of the end surface of the sealing flange, which is far away from the lower port, abuts against the caulking groove, and a cavity is formed between the sealing ring and the caulking groove.

Preferably, the upper port is in a cone cylinder shape, the lower port is in a cylinder shape, the inner diameter of the upper port gradually increases along the direction away from the lower port, the sealing flange is further provided with a plurality of vent holes which are uniformly distributed along the circumferential direction, and the cavity is communicated with the air chamber through the vent holes.

Preferably, the lower end of the straight barrel part is nested with a milk pipe for receiving milk, and the milk pipe is in threaded connection with the bottom end of the milking cup.

The invention has the beneficial effects that: according to the invention, the sealing part is arranged between the teatcup liner and the milking cup, so that the sealing property between the teatcup liner and the milking cup is greatly improved, and the milking effect is ensured; the sealing part realizes the effect of locking the straight cylinder part when the air chamber is ventilated by utilizing the structure of the sealing part, and realizes the effect of automatic sealing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a structure of a teat cup according to an embodiment of the present invention;

FIG. 2 is a perspective view of the sealing part;

FIG. 3 is a perspective view of the seal portion;

fig. 4 is an enlarged view of a portion a in fig. 1.

Description of reference numerals: 1-milking cup, 11-pulsating air pipe, 12-caulking groove, 13-air chamber, 2-milk cup liner, 21-lip, 22-cone part, 23-straight cylinder part, 3-sealing flange, 31-upper port, 32-lower port, 33-vent hole, 4-sealing ring, 5-cavity and 6-milk pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, a teat cup comprising a teat cup 1 and a teat cup liner 2 nested in the teat cup 1, wherein the teat cup liner 2 comprises a lip 21 at an upper end of the teat cup 1, a tapered cylinder portion 22 in an inner cavity of the teat cup 1, and a straight cylinder portion 23 extending beyond a bottom end of the teat cup 1, the tapered cylinder portion 22 and the straight cylinder portion 23 are made of an elastic material, the tapered cylinder portion 22 is made of a material having a lower elastic modulus than that of the straight cylinder portion 23, an inner diameter of the tapered cylinder portion 22 gradually increases in a direction away from the straight cylinder portion 23, the lip 21 is tightly sealed at the upper end of the teat cup 1, an air chamber 13 is formed between the tapered cylinder portion 22 and the inner cavity of the teat cup 1, a pulsating air pipe 11 extending beyond the teat cup 1 is provided in the air chamber 13, and a sealing portion is provided at a connection portion of the straight cylinder portion 23 and the teat cup 1, the inner wall of the corresponding teat cup 1 is provided with a caulking groove 12 for embedding the sealing part.

Further, the sealing part comprises a sealing flange 3 and a sealing ring 4 nested on the sealing flange 3, the inner ring of the sealing flange 3 comprises an upper port 31 and a lower port 32, the straight cylinder part 23 is tightly sealed in the lower port 32 through the sealing ring 4, the inner ring of the sealing ring 4 is tightly pressed on the sealing flange 3, at least one part of the end surface of the sealing flange 3 far away from the lower port 32 is tightly pressed on the caulking groove 12, and a cavity is formed between the sealing ring 4 and the caulking groove 12;

the straight cylinder part 23 is tightly sealed in the lower port 32 through the sealing ring 4, the inner ring of the sealing ring 4 is tightly pressed on the sealing flange 3, and the sealing performance of the lower port 32 and the straight cylinder part 23 is ensured, namely the sealing ring 4 supports the sealing flange 3 from the radial direction; at least one part of the end surface of the sealing flange 3 far away from the lower port 32 is tightly attached to the embedded groove 12, so that the sealing ring 4 axially supports the sealing flange 3 and ensures the sealing of the outer ring of the sealing flange 3, namely the sealing ring 4 is compressed in the axial direction when being installed in the embedded groove 12;

further, the upper port 31 is in a cone shape, the lower port 32 is in a cylinder shape, the inner diameter of the upper port 31 gradually increases along the direction away from the lower port 32, the sealing flange 3 is further provided with a plurality of vent holes 33 uniformly distributed along the circumferential direction, and the cavity is communicated with the air chamber 13 through the vent holes 33; the cone-shaped upper port 31 facilitates the insertion of the straight tube 23, and causes the airflow to generate a component force on the cone-shaped upper port 31, as shown in fig. 4, QL represents the airflow, the airflow in the air chamber 13 acts on the upper port 31 to generate a resultant force F, and the F is decomposed into F by the inclined surface on the upper port 31₁And F₂In which F is₁The axial direction of the sealing flange 3 is pointed, the thrust is generated on the sealing flange 3 by the axial direction, the sealing ring 4 is further pressed tightly, the sealing ring 4 generates resilience through the reaction of the force, the sealing flange 3 is supported by the sealing ring 4 in the axial direction, and the sealing performance of the outer ring of the sealing flange 3 and the sealing ring 4 is ensured; the air flow flows in through the vent hole 33In the cavity between the sealing ring 4 and the caulking groove 12, the cavity is communicated with the air chamber 13, so that the pressure in the cavity is the same as the pressure in the air chamber 13, the air flow generates pushing pressure on the sealing ring 4 under the action of the sealing ring 4, the sealing ring 4 is further abutted against the sealing flange 3, and the direction of the pushing pressure generated by the air flow in the cavity on the sealing ring 4 is the same as that of the pushing pressure F₁The directions of the two are opposite, so that the two generate a counteraction effect, the inner radial force and the outer radial force at the sealing position are balanced to a certain extent, and air leakage is avoided when the air chamber is ventilated;

according to the formula of force and pressure, whether the pushing force generated by the air flow in the cavity is the same as the pushing force generated by the air flow at the upper port 31 depends on the stressed area, so that the stressed areas of the sealing ring 4 and the upper port 31 need to be controlled in actual manufacturing (the calculation method is the prior art, and is not described in the present application), and if the pushing forces generated by the two air flows are the same, because F is the same as F₁Is a component force, therefore, in the working process of the invention, the sealing flange 3 can automatically generate a force for locking the straight cylinder part 23 along with ventilation, thereby ensuring the sealing performance, therefore, in order to obtain better sealing effect, the thrust generated by the air flow in the cavity can not be less than F₁。

Furthermore, the sealing flange 3 and the sealing ring 4 are both made of an elastic material, such as rubber, the elastic modulus of the material used for the sealing flange 3 and the elastic modulus of the material used for the sealing ring 4 are both smaller than the elastic modulus of the material used for the straight cylinder portion 23, the arrangement is such that the sealing portion extrusion does not cause excessive deformation of the straight cylinder portion 23 and cause leakage, and the straight cylinder portion 23 does not generate excessive deformation when air flow is introduced, the material of the lip portion 21 and the conical cylinder portion 22 of the teatcup liner 2 in the present application may be the same as that of the teatcup liner in the prior art, and the material of the sealing ring 4 in the present application may refer to that of the O-ring in the prior art, and the elastic modulus thereof may be the same as that of the material used for the O-ring.

Further, a milk pipe 6 for receiving milk is nested on the straight cylinder part 23, and the milk pipe 6 is in threaded connection with the bottom end of the milking cup 1.

When the teat cup liner is used, the sealing part is embedded into the caulking groove in advance, the sealing flange needs to be tightly abutted into the caulking groove after the sealing part is embedded, the sealing ring is in a compression state in the circumferential direction and tightly abutted onto the sealing flange, so that the lower port of the teat cup liner can be tightly abutted and sealed onto the straight cylinder part when the straight cylinder part of the teat cup liner is inserted; when milking is carried out, the teatcup liner is embedded into the teatcup, the milk pipe is embedded in the straight cylinder part of the teatcup liner and is in threaded connection with the teatcup, the lip part is tightly clamped at the upper end of the teatcup, and the pulsating air pipe is connected with an external air source, so that the milking operation can be carried out.

According to the invention, the sealing part is arranged between the teatcup liner and the milking cup, so that the sealing property between the teatcup liner and the milking cup is greatly improved, and the milking effect is ensured; the sealing part realizes the effect of locking the straight cylinder part when the air chamber is ventilated by utilizing the structure of the sealing part, realizes the effect of automatic sealing, ensures that the inner and outer radial forces at the sealing part are balanced to a certain degree when air flow is introduced by utilizing the functions of the upper port, the vent hole and the sealing ring in the shape of a cone, avoids air leakage caused by milking of the lower port and the straight cylinder part, and can supplement micro deformation caused by long-time use of the teatcup liner by utilizing the generated radial force.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A teatcup comprising a teatcup (1) and a teatcup liner (2) nested in the teatcup (1), characterized in that the teatcup liner (2) comprises a lip (21) at an upper end of the teatcup (1), a cone portion (22) in an inner cavity of the teatcup (1) and a straight portion (23) extending beyond a bottom end of the teatcup (1), that the cone portion (22) is made of a material having a lower modulus of elasticity than the straight portion (23), that the inner diameter of the cone portion (22) increases gradually in a direction away from the straight portion (23), that the lip (21) is tightly sealed against the upper end of the teatcup (1), that an air chamber (13) is formed between the cone portion (22) and the inner cavity of the teatcup (1), and that a pulsating air tube (11) extending beyond the teatcup (1) is arranged in the air chamber (13), a sealing part is arranged at the joint of the straight tube part (23) and the milking cup (1), and a caulking groove (12) for embedding the sealing part is arranged on the inner wall of the corresponding milking cup (1);

the sealing part comprises a sealing flange (3) and a sealing ring (4) nested on the sealing flange (3), the sealing flange (3) and the sealing ring (4) are both made of elastic material, the elastic modulus of the material used by the sealing flange (3) and the elastic modulus of the material used by the sealing ring (4) are both smaller than the elastic modulus of the material used by the straight cylinder part (23), the inner ring of the sealing flange (3) comprises an upper port (31) and a lower port (32), the straight cylinder part (23) is tightly sealed in the lower port (32) through a sealing ring (4), the inner ring of the sealing ring (4) is tightly propped against the sealing flange (3), at least one part of the end surface of the sealing flange (3) far away from the lower port (32) is tightly attached to the embedded groove (12), and a cavity is formed between the sealing ring (4) and the embedded groove (12);

go up port (31) and be awl tube-shape, lower port (32) are cylindricly, the internal diameter of going up port (31) is along keeping away from the direction of lower port (32) increases gradually, a plurality of along circumference evenly distributed's air vent (33) have still been seted up on sealing flange (3), the cavity passes through air vent (33) with air chamber (13) are linked together.

2. A teatcup according to claim 1, characterised in that the lower end of the straight portion (23) is nested with a milk tube (6) for receiving milk, the milk tube (6) being in threaded connection with the bottom end of the teatcup (1).