Buffalo milk collecting device

Abstract

The invention discloses a buffalo milk collecting device. The buffalo milk collecting device comprises a shell, a lining and a radial adjusting mechanism, the radial adjusting mechanism is provided with at least two sets of adjusting units which are independently arranged in the axial direction of the shell, and each set of unit controls the pressurizing parts in the circumferential array to synchronously move in the radial direction through an adjusting piece. Each group of adjusting units can independently and accurately control the radial shrinkage amount of different axial sections (such as the root and the middle) on the lining. And the inner cavity of the lining can actively deform to form a stepped adaptive shape matched with the natural taper of the buffalo nipple, so that the full-length uniform and fit pressure distribution is realized. The vacuum sealing reliability in the milking process is improved, efficient and mild milk emptying is ensured, the risk of nipple tissue damage caused by too high local pressure or sealing air leakage is remarkably reduced, and the vacuum sealing device is particularly suitable for efficient and healthy collection of buffalo milk.

Description

Technical Field

[0001] This invention relates to the field of milking equipment technology, and more particularly to a buffalo milk collection device. Background Technology

[0002] Raw buffalo milk is rich in milk fat, protein, and various minerals, making it highly nutritious and a premium raw material for producing high-end cheese, yogurt, and other dairy products, thus possessing significant economic value. However, the udder structure and lactation physiology of buffaloes differ significantly from those of common Holstein dairy cows. Their teats are typically distinctly conical, thick at the base and tapering towards the tip, and the teat skin is much more delicate.

[0003] Currently, many farmers still rely primarily on traditional manual milking methods, which are labor-intensive, inefficient, and make it difficult to guarantee hygiene, safety, and consistent milk quality. Even when general milking equipment designed for dairy cows is used, the milking cups of conventional equipment are often incompatible with the conical structure and mechanical properties of buffalo teats, resulting in problems such as poor sealing, air leakage, and incomplete milking leading to milk residue. This can easily cause damage to the buffalo teat skin, edema, or trigger stress responses, harming the animal's physiological health and potentially increasing the risk of mastitis.

[0004] Therefore, existing technologies need to be improved and developed. Summary of the Invention

[0005] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a buffalo milk collection device to solve the technical problem that the lining of the existing milking cup cannot be radially contracted in segments to adapt to the conical structure of the buffalo teat.

[0006] To achieve the above objectives, the present invention proposes a buffalo milk collection device, comprising an outer shell with a hollow interior forming a receiving cavity and a clearance hole at the bottom for a vacuum tube to pass through; an inner liner disposed within the receiving cavity, its top sealed to the top of the outer shell, and a connection port for connecting the vacuum tube at the bottom of the inner liner, forming an adjustment cavity between the inner liner and the inner wall of the outer shell; and a radial adjustment mechanism comprising at least two sets of adjustment units arranged along the axial direction of the outer shell, each adjustment unit comprising a plurality of pressurizing parts arranged in a circumferential array and capable of synchronous radial movement, and an adjustment element for controlling the synchronous movement of the plurality of pressurizing parts; each set of adjustment units independently controls the radial contraction of different axial sections on the inner liner.

[0007] In one optional embodiment of this application, the sidewall of the outer casing has a plurality of radially arranged guide holes in a circular array; the outer sidewall of the outer casing is provided with a rotating groove coaxial with the outer casing, the rotating groove being radially opposite to and communicating with each of the guide holes; the adjusting member is an adjusting ring rotatably disposed in the rotating groove, and the inner sidewall of the adjusting ring is provided with a protrusion; each set of adjusting units further includes a push rod, the push rod being movably inserted into the corresponding guide hole, one end of the push rod facing the inner liner being connected to the pressurizing part, and the other end abutting against the protrusion of the same adjusting ring.

[0008] In one optional embodiment of this application, the buffalo milk collection device further includes a flexible isolation membrane; the flexible isolation membrane is disposed in the adjustment cavity, the top edge of the flexible isolation membrane is sealed to the inner wall of the outer shell, and the bottom edge of the flexible isolation membrane is sealed to the inner wall of the outer shell surrounding the clearance hole, so that a closed driving cavity is formed between the flexible isolation membrane and the inner wall of the outer shell, and the radial adjustment mechanism is housed in the driving cavity.

[0009] In one optional embodiment of this application, the protrusion has an arc-shaped sliding groove on the side facing the liner, the arc-shaped sliding groove extends circumferentially along the adjusting ring, and the depth of the groove bottom gradually changes along the extension direction; the side wall of the arc-shaped sliding groove also has a limiting groove, the depth direction of the limiting groove is parallel to the axial direction of the outer shell; the end of the push rod away from the pressurizing part is provided with a sliding block, the sliding block includes a sliding part and a limiting part; the sliding part is slidably disposed in the arc-shaped sliding groove, and the limiting part is slidably disposed in the limiting groove.

[0010] In one optional embodiment of this application, the top of the liner is provided with an outwardly folded flange edge, the flange edge having a horizontal extension and a vertical sleeve portion bent downward from the outer edge of the horizontal extension; the inner sidewall of the vertical sleeve portion is provided with a first thread; the outer sidewall of the top of the outer shell is provided with a second thread that mates with the first thread; by screwing the first thread and the second thread together, the vertical sleeve portion presses and seals the horizontal extension of the flange edge against the top end face of the outer shell.

[0011] In one optional embodiment of this application, the outer side of the adjusting ring is provided with anti-slip texture and scale markings.

[0012] In one optional embodiment of this application, the inner surface of the pressurizing part is adapted to the shape of the outer wall of the liner.

[0013] In one optional embodiment of this application, the pressurizing part is a composite layered structure, comprising: a rigid base layer, the side of which facing away from the liner is connected to the push rod; and an elastic layer, which is fixedly attached to the side of the rigid base layer facing the liner.

[0014] In summary, the beneficial effects of this invention are:

[0015] The buffalo milk collection device of this invention, through the operation of the adjusting components, can precisely drive the corresponding pressure sections to perform synchronous radial displacement, thereby independently and precisely controlling the degree of radial contraction of the inner liner along different sections of its axial direction (e.g., the thick base and tapering middle of the teat). This allows the inner cavity of the liner to be actively shaped according to actual needs, forming a stepped or continuously gradually changing profile that matches the natural taper of the buffalo teat. Thus, during milking, the entire length of the teat receives a uniform, close, and gentle circumferential pressure distribution. This not only ensures excellent airtightness between the milking cup and the teat, significantly improving milking efficiency, but also effectively reduces the risk of teat tissue damage caused by uneven pressure, further improving the collection efficiency and quality stability of high-quality raw milk while ensuring the health of the buffalo mammary glands. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the buffalo milk collection device of the present invention;

[0018] Figure 2 This is an exploded view of the buffalo milk collection device of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the adjustment unit in this invention;

[0020] Figure 4 for Figure 3 Enlarged view of area A within the middle circle;

[0021] Figure 5 This is one of the cross-sectional views of the buffalo milk collection device of the present invention;

[0022] Figure 6 This is a second cross-sectional view of the buffalo milk collection device of the present invention;

[0023] Wherein: 100, outer shell; 101, guide hole; 102, rotating groove; 110, inner lining; 111, flange edge; 120, adjusting unit; 121, pressurizing part; 122, adjusting component; 1221, protrusion; 1222, arc-shaped sliding groove; 1223, limiting groove; 123, push rod; 124, sliding block; 1241, sliding part; 1242, limiting part; 130, flexible isolation membrane; 140, vacuum tube. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of the present invention.

[0025] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 In one embodiment of the present invention, a buffalo milk collection device is disclosed, comprising a shell 100, the interior of which is hollow to form a receiving cavity, and a clearance hole at the bottom for a vacuum tube 140 to pass through; an inner liner 110 disposed within the receiving cavity, the top of which is sealed to the top of the shell 100, and the bottom of the inner liner 110 having a connection port for connecting the vacuum tube 140, and an adjustment cavity being formed between the inner liner 110 and the inner wall of the shell 100; a radial adjustment mechanism comprising at least two sets of adjustment units 120 arranged along the axial direction of the shell 100, each adjustment unit 120 comprising a plurality of pressurizing parts 121 arranged in a circumferential array and capable of synchronous radial movement, and an adjustment member 122 for controlling the synchronous movement of the plurality of pressurizing parts 121; each set of adjustment units 120 independently controls the radial contraction of different axial sections on the inner liner 110.

[0026] In this embodiment, two sets of adjustment units 120 are used as examples, corresponding to the basic section and the middle section of the nipple, respectively. Each set of adjustment units 120 includes multiple pressure parts 121 evenly arrayed along the circumference, and an adjustment member 122 that controls the synchronous operation of these pressure parts 121.

[0027] In practical use, the device is first connected to the vacuum milking system via a hose. The liner 110 is then placed over the buffalo teat. Since buffalo teats are often distinctly conical (thick at the base and thin at the tip), initially, the liner 110 may only fit snugly against sections of the teat. The operator can use tactile observation or experience to operate the adjusting mechanism 122, driving its corresponding multiple pressure sections 121 to move radially inwards simultaneously. These pressure sections 121 uniformly compress the upper sidewall of the liner 110 (corresponding to the thicker base of the teat) from the outside, causing the inner diameter of that section of the liner 110 to actively contract, thus tightly fitting against the teat base and forming a reliable seal to prevent air leakage. Next, the adjusting mechanism 122 is operated to drive its corresponding pressure section 121 to compress the middle or lower sidewall of the liner 110, causing that section of the liner 110 to fit against the thinner part of the teat with appropriate pressure.

[0028] By setting multiple independently controllable adjustment units 120 along the axial direction, independent and precise control of the radial shrinkage of different axial sections of the liner 110 is achieved. Furthermore, by applying appropriate pressure in segments, uniform and gentle wrapping of the entire nipple length is achieved, reducing the risk of pressure sores and friction damage.

[0029] For example, please refer to Figure 2 and Figure 3 The outer casing 100 has a plurality of radially arranged guide holes 101 on its sidewall; the outer sidewall of the outer casing 100 is provided with a rotating groove 102 coaxial with the outer casing 100, the rotating groove 102 being radially opposite to and communicating with each of the guide holes 101; the adjusting member 122 is an adjusting ring rotatably disposed in the rotating groove 102, and the inner sidewall of the adjusting ring is provided with a protrusion 1221; each set of adjusting units 120 further includes a push rod 123, the push rod 123 being movably inserted into the corresponding guide hole 101, one end of the push rod 123 facing the inner liner 110 being connected to the pressure part 121, and the other end abutting against the protrusion 1221 of the same adjusting ring.

[0030] Specifically, a plurality of radial guide holes 101 are uniformly machined circumferentially on the side wall of the outer casing 100. An annular rotating groove 102, coaxial with the outer casing 100, is machined on the outer side wall of the outer casing 100. This rotating groove 102 corresponds radially to and communicates with each guide hole 101. The adjusting member 122 is specifically an adjusting ring nested within the rotating groove 102, which can rotate around the axis of the outer casing 100 under external force. On the inner side wall of the adjusting ring, protrusions 1221 are provided, corresponding one-to-one in number and position to the guide holes 101. Each adjusting unit 120 includes a push rod 123 and a pressure part 121, the same number as the guide holes 101. The push rod 123 passes through the corresponding guide hole 101 and can slide radially within the hole. The inner end of the push rod 123 (the end facing the inner liner 110) is fixedly connected to the arc-shaped pressure part 121, which is located within the adjusting cavity and faces the outer wall of the inner liner 110. The outer end of the push rod 123 (the end facing the outside of the housing 100) abuts against the corresponding protrusion 1221 on the inner side of the adjusting ring.

[0031] In actual use, initially, the adjusting ring is at a certain angle, the thrust of the protrusion 1221 on the push rod 123 is small, the push rod 123 is in a relatively outward position in the guide hole 101, and the pressure of the pressure part 121 on the inner liner 110 is small or zero.

[0032] When the operator rotates the adjusting ring clockwise, the rotation of the adjusting ring causes all the protrusions 1221 on its inner side to rotate synchronously around the axis. During the rotation, the contour surface (which can be designed as an inclined surface or a curved surface) of each protrusion 1221 that contacts the outer end of the corresponding push rod 123 begins to apply a radially inward thrust to the push rod 123. Under the action of the thrust of the protrusion 1221, all the push rods 123 overcome possible friction or restoring elasticity and move synchronously and centripetally in a straight line along the guide hole 101. The inner ends of all the push rods 123 drive their respective connected pressure parts 121 to move synchronously inward. The multiple pressure parts 121 uniformly press the sidewall of the corresponding axial section of the liner 110 from all sides, causing the liner 110 to contract radially and reduce its inner diameter.

[0033] For example, please refer to Figure 3 , Figure 4 and Figure 6The protrusion 1221 has an arc-shaped sliding groove 1222 on the side facing the inner liner 110. The arc-shaped sliding groove 1222 extends circumferentially along the adjusting ring, and its bottom depth gradually changes along the extension direction. The side wall of the arc-shaped sliding groove 1222 also has a limiting groove 1223, and the depth direction of the limiting groove 1223 is parallel to the axial direction of the outer shell 100. The push rod 123 has a sliding block 124 at one end away from the pressurizing part 121. The sliding block 124 includes a sliding part 1241 and a limiting part 1242. The sliding part 1241 is slidably disposed in the arc-shaped sliding groove 1222, and the limiting part 1242 is slidably disposed in the limiting groove 1223.

[0034] Specifically, the protrusion 1221 has an arc-shaped T-shaped sliding groove on the side facing the inner liner 110. This groove extends circumferentially along the adjusting ring, and its bottom depth gradually decreases along the tightening direction of the adjusting ring (e.g., clockwise), forming an effective inclined cam drive mechanism. A T-shaped slider is fixedly provided at the end of the push rod 123 away from the pressure part 121. The lateral part (sliding part 1241) of the T-shaped slider is in lateral spatial cooperation with the T-shaped sliding groove, while its longitudinal part is in clearance cooperation with the longitudinal opening of the T-shaped sliding groove. This allows the T-shaped slider to be circumferentially constrained within the T-shaped sliding groove, but it can slide along an arc-shaped path within the groove, and its radial position is determined by the groove depth.

[0035] In the specific implementation process, the operator rotates the adjusting ring in the tightening direction (clockwise), causing the T-shaped sliding groove to rotate synchronously. As the bottom of the T-shaped sliding groove gradually becomes shallower along the rotation direction, the T-shaped slider embedded in the groove generates a radially inward thrust on the slider during movement, pushing the slider from its deeper initial position inward. This is directly converted into a radially inward linear displacement of the T-shaped slider (along with the entire push rod 123). The inner end of the push rod 123 drives the pressure part 121 to move inward synchronously, thereby uniformly compressing the corresponding section of the inner liner 110's sidewall, achieving shrinkage adaptation.

[0036] The operator rotates the adjusting ring counterclockwise in the relaxation direction. The adjusting ring reverses, and the trend of depth change in the T-shaped sliding groove reverses, gradually deepening in this direction. The relatively deeper groove provides radially outward movement space for the slider. At this time, the deeper sidewall of the T-shaped sliding groove (the sidewall opposite to the previous drive) actively contacts and pushes the T-shaped slider, causing it to slide deeper into the groove. This action rigidly pulls the slider (and push rod 123) radially outward. Push rod 123 drives the pressure part 121 to move outward, thereby releasing the pressure on the liner 110, which then returns to its original shape due to its own elasticity.

[0037] In one embodiment, a wave spring washer and a high friction coefficient washer are sequentially provided between one axial end face of the adjusting ring (e.g., the end face near the opening of the housing 100) and the axial sidewall corresponding to the rotating groove 102.

[0038] The high-friction coefficient pad can be made of engineering plastics (such as polyurethane, polyamide) or soft metals (such as copper-based friction materials) with added wear-resistant fillers (such as graphite, molybdenum disulfide, or ceramic particles). One side of the pad contacts the end face of the adjusting ring, and the other side contacts the wave spring washer. The wave spring washer is compressed between the friction pad and the rigid sidewall of the rotating groove 102, providing a constant and flexible axial clamping force.

[0039] In the non-adjusting state, the wave spring washer, with its elastic force, continuously presses the high-friction coefficient washer against the end face of the adjusting ring. A large static friction force is generated between the contact surfaces, and this frictional torque constitutes the initial resistance threshold for the rotation of the adjusting ring. This threshold is much higher than the unexpected disturbance torque that the device may experience during normal milking or movement, thus effectively preventing any accidental rotation of the adjusting ring due to vibration or contact, ensuring the absolute stability of the pre-set adaptation state.

[0040] When the operator needs to make adjustments, sufficient torque must be applied to overcome the static friction. Once the adjusting ring begins to rotate, the static friction transforms into sliding friction. Due to the elasticity of the wave spring, the pressure applied to the friction pad is continuous and uniform, resulting in stable, smooth, and stepless sliding friction. This provides the operator with clear, linear, and finely controllable torque feedback, enabling fine-tuning and preventing overshoot.

[0041] Once the adjustment is complete and the operator stops applying force, the adjusting ring is immediately locked in the new angular position under the action of static friction, without any additional locking operation or device.

[0042] For example, the buffalo milk collection device further includes a flexible isolation membrane 130; the flexible isolation membrane 130 is disposed in the adjustment cavity, the top edge of the flexible isolation membrane 130 is sealed to the inner wall of the outer shell 100, and the bottom edge of the flexible isolation membrane 130 is sealed to the inner wall of the outer shell 100 surrounding the clearance hole, so that a closed driving cavity is formed between the flexible isolation membrane 130 and the inner wall of the outer shell 100, and the radial adjustment mechanism is housed in the driving cavity.

[0043] In this embodiment, the flexible isolation membrane 130 may be a pre-formed, highly elastic, high-strength film component. For example, food-grade thermoplastic polyurethane or fiber-reinforced silicone rubber, these materials combine excellent elasticity (allowing for significant deformation following the pressure section 121), tear resistance, chemical resistance (resistance to cleaning agent corrosion), and good compatibility with common sealing processes (such as thermowelding, laser welding, and adhesive bonding).

[0044] The top edge of the isolation membrane can be permanently and seamlessly sealed to a specific annular step or plane on the inner wall of the housing 100 using hot-melt welding or high-strength food-grade adhesive. This connection point is located a certain distance below the top of the housing 100, leaving installation space for the flange and sealing ring at the top of the liner 110.

[0045] The bottom of the isolation membrane contracts to form a sleeve-like structure, and its end edge is also connected to the bottom of the outer shell 100 and the inner flange or plane surrounding the vacuum clearance hole through a hot-melt welding process to form an annular seal. This connection ensures that the passage from the inside of the liner 110 to the vacuum tube 140 (i.e., the internal sanitary space enclosed by the isolation membrane) is completely isolated from the external mechanical drive cavity.

[0046] Through the aforementioned double sealing connection at the top and bottom, the flexible isolation membrane 130 and the inner wall of the outer casing 100 together form a completely sealed, dry, and clean drive cavity. The entire radial adjustment mechanism (including all mechanical moving parts such as the adjustment ring, push rod 123, and pressure part 121) is permanently encapsulated within this drive cavity.

[0047] For example, the top of the liner 110 is provided with an outwardly folded flange edge 111, the flange edge 111 having a horizontal extension and a vertical sleeve portion bent downward from the outer edge of the horizontal extension; the inner sidewall of the vertical sleeve portion is provided with a first thread; the outer sidewall of the top of the outer shell 100 is provided with a second thread that mates with the first thread; by screwing the first thread and the second thread together, the vertical sleeve portion presses and seals the horizontal extension of the flange edge 111 against the top end face of the outer shell 100.

[0048] During installation, first place the clean inner liner 110 into the outer casing 100, aligning its bottom connection port with the clearance hole of the outer casing 100. At this time, the flange edge 111 at the top of the inner liner 110 naturally rests on the top of the outer casing 100. The horizontal extension of the flange edge 111 covers the top end face of the outer casing 100, while its vertical sleeve portion hangs and fits around the outer periphery of the outer wall of the top section of the outer casing 100, which is machined with a second thread. The operator rotates the inner liner 110 (or, conversely, rotates the outer casing 100 assembly under certain design conditions). As the first thread on the inner side of the vertical sleeve portion engages with the second thread on the outer side of the outer casing 100, the inner liner 110 undergoes axial displacement relative to the outer casing 100. As the engagement proceeds, the vertical sleeve portion screws downward along the thread like a bottle cap. When screwed to the predetermined position, the horizontal extension of the flange edge 111 is forcefully pulled upward and pressed against the top end face of the outer casing 100 by its own vertical sleeve portion. The powerful and uniform axial clamping force generated by the threaded pair causes the horizontal extension made of a flexible material (such as silicone) to elastically deform and tightly fill all microscopic irregularities between it and the top end face of the housing 100, thus forming a highly reliable end face seal. At the same time, the threaded pair itself also constitutes an auxiliary radial sealing barrier.

[0049] This embodiment generates a strong axial clamping force through threaded engagement, achieving a dual reliable seal with end face sealing as the primary method and threaded sealing as a secondary method, completely preventing leakage. Its structure is simple and smooth, with no dead corners for cleaning, making it easy to disassemble and clean, ensuring hygiene and safety. At the same time, the threaded connection has self-locking and anti-loosening characteristics, which can resist vibration and impact during operation and ensure a stable connection.

[0050] For example, the adjustment ring is characterized by having anti-slip texture and scale markings on its outer side.

[0051] For example, the inner surface of the pressurizing part 121 is adapted to the shape of the outer wall of the liner 110.

[0052] For example, the pressurizing part 121 is a composite layered structure, including: a rigid base layer, the side of which facing away from the inner liner 110 is connected to the push rod 123; and an elastic layer, which is fixedly attached to the side of the rigid base layer facing the inner liner 110.

[0053] In summary, the buffalo milk collection device of this embodiment includes a shell 100, an inner liner 110, and a radial adjustment mechanism. The radial adjustment mechanism has at least two sets of adjustment units 120 independently arranged along the axial direction of the shell 100. Each set of units controls the synchronous radial movement of the pressure section 121 of the circumferential array via an adjustment element 122. Each set of adjustment units 120 can independently and precisely control the radial contraction of different axial sections (such as the root and middle) on the inner liner 110. This allows the inner cavity of the inner liner 110 to actively deform, forming a stepped fit shape that matches the natural taper of the buffalo teat, thereby achieving a uniform and conforming pressure distribution along the entire length. This invention greatly improves the reliability of vacuum sealing during milking, ensures efficient and gentle milk drainage, and significantly reduces the risk of teat tissue damage caused by excessive local pressure or air leakage. It is particularly suitable for the efficient and healthy collection of buffalo milk.

[0054] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0055] It should be noted that this invention uses a buffalo milk collection device as an example to introduce the specific structure and working principle of the invention, but the application of this embodiment is not limited to the buffalo milk collection device, and can also be applied to the production and use of other similar products.

[0056] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A buffalo milk collection device, characterized in that, include: The outer shell (100) has a hollow interior forming a receiving cavity, and a clearance hole at the bottom for the vacuum tube (140) to pass through; The inner liner (110) is disposed in the receiving cavity, and its top is sealed to the top of the outer shell (100). The bottom of the inner liner (110) is provided with a connection port for connecting the vacuum tube (140). An adjustment cavity is formed between the inner liner (110) and the inner wall of the outer shell (100). The radial adjustment mechanism includes at least two sets of adjustment units (120) arranged along the axial direction of the housing (100). Each adjustment unit (120) includes a plurality of pressurizing parts (121) arranged in a circumferential array and capable of synchronous radial movement, and an adjustment member (122) for controlling the synchronous movement of the plurality of pressurizing parts (121). Each adjustment unit (120) independently controls the radial shrinkage of different axial sections on the liner (110).

2. The buffalo milk collection device according to claim 1, characterized in that, The outer casing (100) has a plurality of radial guide holes (101) arranged in a circular array on its side wall; the outer side wall of the outer casing (100) is provided with a rotating groove (102) coaxial with the outer casing (100), and the rotating groove (102) is radially opposite to and connected to each of the guide holes (101); The adjusting member (122) is an adjusting ring rotatably disposed in the rotating groove (102), and the inner sidewall of the adjusting ring is provided with a protrusion (1221). Each set of adjustment units (120) also includes a push rod (123), which is movably inserted into the corresponding guide hole (101). One end of the push rod (123) facing the liner (110) is connected to the pressure part (121), and the other end abuts against the protrusion (1221) of the same adjustment ring.

3. The buffalo milk collection device according to claim 1, characterized in that, The buffalo milk collection device also includes a flexible isolation membrane (130); the flexible isolation membrane (130) is disposed in the adjustment cavity, the top edge of the flexible isolation membrane (130) is sealed to the inner wall of the outer shell (100), and the bottom edge of the flexible isolation membrane (130) is sealed to the inner wall of the outer shell (100) surrounding the clearance hole, so that a closed driving cavity is formed between the flexible isolation membrane (130) and the inner wall of the outer shell (100), and the radial adjustment mechanism is housed in the driving cavity.

4. The buffalo milk collection device according to claim 2, characterized in that, The protrusion (1221) has an arc-shaped sliding groove (1222) on the side facing the inner lining (110). The arc-shaped sliding groove (1222) extends circumferentially along the adjusting ring, and the depth of its bottom gradually changes along the extension direction. The side wall of the arc-shaped sliding groove (1222) also has a limiting groove (1223), and the depth direction of the limiting groove (1223) is parallel to the axial direction of the outer shell (100). The push rod (123) has a sliding block (124) at one end away from the pressurizing part (121). The sliding block (124) includes a sliding part (1241) and a limiting part (1242). The sliding part (1241) is slidably disposed in the arc-shaped sliding groove (1222), and the limiting part (1242) is slidably disposed in the limiting groove (1223).

5. The buffalo milk collection device according to claim 1, characterized in that, The liner (110) has an outwardly folded flange edge (111) at its top. The flange edge (111) has a horizontal extension and a vertical sleeve portion that bends downward from the outer edge of the horizontal extension. The inner sidewall of the vertical sleeve portion is provided with a first thread. The outer sidewall of the top of the outer shell (100) is provided with a second thread that mates with the first thread. By screwing the first thread and the second thread together, the vertical sleeve portion presses and seals the horizontal extension of the flange edge (111) against the top end face of the outer shell (100).

6. The buffalo milk collection device according to claim 2, characterized in that, The outer side of the adjustment ring is provided with anti-slip texture and scale markings.

7. The buffalo milk collection device according to claim 2, characterized in that, The inner surface of the pressurizing part (121) is adapted to the shape of the outer wall of the liner (110).

8. The buffalo milk collection device according to claim 2, characterized in that, The pressurizing part (121) has a composite layered structure, including: A rigid base layer, the side of which faces away from the liner (110) is connected to the push rod (123); An elastic layer is fixedly attached to the rigid base layer on the side facing the liner (110).

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