Matching structure of eccentric shaft and eccentric shaft disc of gear pump for filling dairy products

Abstract

The utility model discloses a matching structure of an eccentric shaft and an eccentric shaft disc of a gear pump for filling dairy products, and belongs to the technical field of food filling machinery. The gear pump comprises a pump body, and a pump cover is arranged on the right end face of the pump body. The separation disc is positioned at the right end of the pump cavity; the sealing disc is arranged in the pump cavity; the star wheel is arranged in the pump cavity; the matching structure of the eccentric shaft and the eccentric shaft disc comprises the eccentric shaft and the eccentric shaft disc, the right end of the eccentric shaft is connected with an eccentric shaft head hole formed in the left side of the eccentric shaft disc, the eccentric shaft disc is arranged in the pump cavity, and a crescent block is formed on the left side face of the eccentric shaft disc. The device is characterized in that the eccentric shaft head hole is a circular truncated cone-shaped hole, an eccentric shaft head dismounting screw fixing hole is formed in the bottom of the eccentric shaft head hole, the right end of the eccentric shaft forms a circular truncated cone body, the circular truncated cone body is matched with the circular truncated cone-shaped hole, and an eccentric shaft dismounting screw is arranged on the eccentric shaft. The device has the advantages that reliable fixation between the eccentric shaft and the eccentric shaft disc is fully guaranteed, and the effect that the star wheel rotates around the eccentric shaft is prevented from being affected; the operation efficiency is improved; and processing and assembling are convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to food filling mechanical technical field, concretely relates to a gear pump's eccentric shaft and eccentric shaft disc's cooperation structure for dairy product filling. BACKGROUND

[0002] The production of dairy products has a complex industrial process, for example, it involves raw material processing, mixing, sterilization, homogenization, aging, freezing, filling, hardening and packaging. The aforementioned filling is a post-process, and the advantages of gear pump filling are at least: it can meet the requirements of precise flow control; it has good adaptability to high-precision media; it has good self-suction capacity and pressure stability; it meets the requirements of dead angle cleaning and reflects the safety and hygiene of food; the power consumption of the equipment is relatively small; the maintenance cost is low; it has ideal production flexibility, such as being able to switch different formulas and different properties of dairy products as needed; it is easy to control, etc. Based on the foregoing factors, the use of gear pumps for dairy product filling is well recognized by the industry. Of course, in addition to the various ice creams commonly seen by people, dairy products also include milk, cream, butter and other dairy products.

[0003] In the disclosed Chinese patent documents, there are technical information related to the gear pump for filling the dairy products, such as CN201771755U (gear pump for food processing), CN201794783U (gear pump for food processing) and CN101846068A (structure improved gear pump for food processing), etc. The eccentric shaft and eccentric shaft disc of the structure system of the gear pump recommended by the foregoing patents are matched as follows: an eccentric shaft matching hole of the eccentric shaft is formed on the eccentric shaft disc, an eccentric shaft head with a smaller diameter than the eccentric shaft is formed (i.e. extended) at one end of the eccentric shaft facing the eccentric shaft head matching hole, and the eccentric shaft head is fixed with the eccentric shaft head matching hole by a mortise and tenon cooperation effect. In the use state, the gear plate, star wheel and crescent block are driven by the power transmission device to cooperate to the working state, and the material is driven from the feeding port to the discharging port in the state that the gear plate is rotated by the gear plate shaft and the star wheel is rotated by the gear plate teeth of the gear plate, thereby realizing filling. For this, see also paragraphs 0029 to 0031 of the specification of CN101846068A.

[0004] The cooperation of the eccentric shaft and the eccentric shaft disc of the above-mentioned patent has the following common problems: firstly, as mentioned above, the cooperation of the eccentric shaft and the eccentric shaft disc is through the cooperation of the eccentric shaft head extending from one end of the eccentric shaft towards the eccentric shaft disc fitting hole and the eccentric shaft head hole, which tends to be a mortise and tenon effect, so when the dairy product variety needs to be replaced, cleaning, regular or irregular maintenance, it is often difficult to pull the eccentric shaft head of the eccentric shaft out of the eccentric shaft head fitting hole on the eccentric shaft, that is, it is difficult or even impossible to separate the eccentric shaft and the eccentric shaft disc, which affects the cleaning without dead angle and the overall maintenance; secondly, since the star-shaped wheel is rotatably arranged on the eccentric shaft, once the eccentric shaft is worn and needs to be replaced, it is difficult or even impossible to separate it from the eccentric shaft disc, so the eccentric shaft and the eccentric shaft disc can only be replaced together, which causes waste of resources and increases the cost of the user; thirdly, in order to ensure the reliable connection effect between the eccentric shaft and the eccentric shaft disc, and to meet the requirement of separating (disassembling) the eccentric shaft and the eccentric shaft disc as needed under conditions such as cleaning and maintenance, the processing of the eccentric shaft and the assembly of the eccentric shaft and the eccentric shaft disc are extremely strict. If the assembly gap between the eccentric shaft head of the non-rotating eccentric shaft and the eccentric shaft head hole on the eccentric shaft disc is too large, the eccentric shaft will rotate, resulting in negative movement of the star-shaped wheel, on the contrary, if the two are interference fit, it will cause the above-mentioned difficulty or even the impossibility of disassembly.

[0005] In view of the above factors, it is necessary to improve the processing, for this purpose, the applicant, as a professional manufacturer with a certain history of such products, has made persistent and beneficial exploration, and the technical scheme to be introduced below is produced in this background. Content of the utility model

[0006] The task of the utility model is to provide a cooperation structure of the eccentric shaft and the eccentric shaft disc of the gear pump for dairy product filling, which can fully guarantee the reliable fixed connection between the eccentric shaft and the eccentric shaft disc under normal use state, avoid affecting the rotation effect of the star-shaped wheel, separate the eccentric shaft and the eccentric shaft disc conveniently and quickly when needed to clean and / or maintain, improve the work efficiency, and help to reduce the blind and harsh assembly requirements between the eccentric shaft and the eccentric shaft disc.

[0007] The utility model discloses a gear pump's eccentric shaft and eccentric shaft disc's cooperation structure for dairy product filling, the gear pump includes a pump body, the left end of this pump body has a feeding port and a discharging port, the feeding and discharging port, with the pump cavity of pump body intercommunication, and the right end of pump body has a first air inlet and outlet and a second air inlet and outlet with pump cavity intercommunication, and in the position of the right end face of pump body, there is a pump cover, a partition disc and a sealing disc, the partition disc is positioned in the right end of the pump cavity in the position corresponding to the first, second air inlet and outlet, and the disc rim of partition disc and the cavity wall of pump cavity form the seal, and the sealing disc is set in the pump cavity and moves left and right in the position of the right side of partition disc, and the disc rim of sealing disc and the cavity wall of pump cavity seal cooperation, a star wheel, the star wheel is rotatably set in the pump cavity in the position corresponding to the discharging port, the cooperation structure of eccentric shaft and eccentric shaft disc includes an eccentric shaft and an eccentric shaft disc, the right end of eccentric shaft is connected with the eccentric shaft head hole of the left side of eccentric shaft disc, and the eccentric shaft disc is rotatably set in the pump cavity in the position of the left side of the first air inlet, and the disc rim of eccentric shaft disc and the cavity wall of the pump cavity seal cooperation, a crescent block is formed on the left side of eccentric shaft disc, the left end of eccentric shaft corresponds to the concave arc surface below of crescent block, and the star wheel is rotatably set in the left end of eccentric shaft, characterized in that: the eccentric shaft head hole is a circular truncated cone hole, and an eccentric shaft head dismounting screw fixing hole is arranged at the bottom, the right end of eccentric shaft is formed as a circular truncated cone body, the circular truncated cone body is matched with the circular truncated cone hole, an eccentric shaft dismounting screw is arranged on the eccentric shaft and extends to the right end of eccentric shaft and protrudes from the right end face of eccentric shaft and is fixed in the eccentric shaft head dismounting screw fixing hole.

[0008] In one specific embodiment of the utility model, the eccentric shaft disc sliding seat is arranged on the right side of the eccentric shaft disc, the star wheel rotatably sleeved on the left end of the eccentric shaft is matched with the tooth disc teeth formed on the right side of the tooth disc and simultaneously matched with the crescent block, the left side of the tooth disc is formed as a tooth disc rear end face, a tooth disc shaft extends from the center of the tooth disc rear end face, and the tooth disc shaft is connected with a power transmission device.

[0009] In another specific embodiment of the utility model, the power transmission device is directly connected with the tooth disc shaft, the eccentric shaft disc sliding seat connector is locked by a locking nut after sequentially penetrating through the partition disc, the sealing disc and the pump cover from left to right, and the eccentric shaft disc sliding seat connector is sealed between the partition disc in the position corresponding to the partition disc, and the disc rim of the sealing disc is sealed with the cavity wall of the pump cavity.

[0010] In still another specific embodiment of the utility model, the space between the opposite sides of the eccentric shaft disc and the baffle disc forms a first air cavity communicated with the first air inlet and outlet, and the space between the opposite sides of the baffle disc and the sealing disc forms a second air cavity communicated with the second air inlet and outlet.

[0011] In still another specific embodiment of the utility model, the eccentric shaft disc sliding seat and the eccentric shaft disc form an integral structure.

[0012] In still another specific embodiment of the utility model, the positions of the feeding port and the discharging port are staggered, and the position of the feeding port on the pump body corresponds to the rear end surface of the tooth disc, and the position of the discharging port on the pump body corresponds to the tooth of the tooth disc; a feeding groove is recessed in the pump cavity, the feeding groove corresponds to the position below the feeding port, the feeding groove is communicated with the discharging port and forms a 90° positional relationship with the discharging port.

[0013] In still another specific embodiment of the utility model, a positioning pin is fixed on the side surface of the sealing disc facing the pump cover, a positioning pin limiting sleeve is fixed on the side surface of the pump cover facing the sealing disc and at a position corresponding to the positioning pin, and the positioning pin penetrates into the positioning pin limiting sleeve and cooperates with the positioning pin limiting sleeve.

[0014] In still another specific embodiment of the utility model, at least one eccentric shaft disc sealing ring groove is formed in the eccentric shaft disc disc rim of the eccentric shaft disc, and an eccentric shaft disc sealing ring is embedded in the eccentric shaft disc sealing ring groove to form a sealing fit between the eccentric shaft disc and the cavity wall of the pump cavity.

[0015] In still another specific embodiment of the utility model, a baffle disc disc rim sealing ring for blocking the first air cavity and the second air cavity is sleeved on the baffle disc disc rim, and a baffle disc limiting snap ring for limiting the baffle disc is arranged around the circumferential direction of the cavity wall of the pump cavity at positions corresponding to the left side and the right side of the baffle disc respectively, and the baffle disc limiting snap ring is in contact with the edge part of the side surface of the baffle disc.

[0016] In still another specific embodiment of the utility model, a sealing disc disc rim sealing ring for sealing the second air cavity is sleeved on the sealing disc disc rim of the sealing disc, and the sealing disc disc rim sealing ring is in sealing fit with the cavity wall of the pump cavity; in the use state, the first air inlet and outlet and the second air inlet and outlet are connected with the pipeline of the compressed air generating device, and the compressed air generating device is an air compressor, a turbo expander or a hydraulic pneumatic accumulator.

[0017] The technical advantages of this utility model are as follows: Because the eccentric shaft head hole on the eccentric shaft disc is designed as a frustum-shaped hole and an eccentric shaft head removal screw fixing hole is provided at the bottom, and because the right end of the eccentric shaft is formed into a frustum, which mates with the frustum-shaped hole and is fixed by the eccentric shaft removal screw and the eccentric shaft head removal screw fixing hole, reliable fixing between the eccentric shaft and the eccentric shaft disc can be fully guaranteed under normal use, thus avoiding affecting the rotation effect of the star wheel around the eccentric shaft. When cleaning or maintenance is required, the eccentric shaft removal screw can be easily and quickly removed, thereby improving work efficiency. Compared with existing technologies, this helps to reduce the blindly demanding processing and assembly requirements between the eccentric shaft and the eccentric shaft disc. Attached Figure Description

[0018] Figure 1 This is a structural diagram of an embodiment of the present utility model;

[0019] Figure 2 A schematic diagram showing the screw being screwed into the fixing hole of the eccentric shaft head removal screw. Detailed Implementation

[0020] In order to better understand the technical essence and beneficial effects of this utility model, the applicant provides a detailed description below by way of embodiments. However, the description of the embodiments is not intended to limit the solution of this utility model. Any formal but not substantive equivalent transformations made based on the concept of this utility model should be considered within the scope of the technical solution of this utility model.

[0021] In the following description, all directional or positional concepts involving up, down, left, right, front, and back are based on... Figures 1-2 This refers to the current position and state, and therefore should not be construed as a special limitation on the technical solution provided by this utility model.

[0022] Please see Figure 1 The diagram shows a pump body 1 of a gear pump system. The left end of the pump body 1 has an inlet 11 and an outlet 12, which communicate with the pump chamber 13 of the pump body 1. Figure 1 As shown, the feed inlet 11 located at the upper left end of the aforementioned pump body 1 and the discharge outlet 12 located at the lower left end of the pump body 1 are not on the same longitudinal axis. More specifically, their positions on the pump body 1 are staggered (to be described in detail below). At the upper right end of the pump body 1, there is a first air inlet / outlet 15 (also called "first air inlet / outlet port") and a second air inlet / outlet 16 (also called "second air inlet / outlet port") communicating with the pump chamber 13. Furthermore, a pump cover 14 is fixed to the right end face of the pump body 1 using a set of pump cover fixing screws 142. Figure 1A pump cover fixing screw hole 17c for a set of pump cover fixing screws 142 is shown in the right end face of the pump body 1; a partition disc 2 is shown, which is positioned at the right end of the aforementioned pump cavity 13 at a position corresponding to the aforementioned first and second air inlet and outlet ports 15, 16 and the disc rim of the partition disc 2 is sealed with the cavity wall of the pump cavity 13; a sealing disc 3 is shown, which is movably arranged in the pump cavity 13 at a position to the right of the partition disc 2 and the disc rim of the sealing disc 3 is sealed with the cavity wall of the pump cavity 13; a star-shaped wheel 4 is shown, which is rotatably arranged in the aforementioned pump cavity 13 at a position corresponding to the aforementioned discharge port 12; an eccentric shaft 5 and an eccentric shaft disc 6 are shown, which are the structural system of the cooperation structure of the aforementioned eccentric shaft and eccentric shaft disc, the right end of the eccentric shaft 5 is connected with an eccentric shaft head hole 61 arranged in the left side of the eccentric shaft disc 6, and the eccentric shaft disc 6 is movably arranged in the aforementioned pump cavity 13 at a position to the left of the aforementioned first air inlet port 15 and the disc rim of the eccentric shaft disc 6 is sealed with the aforementioned cavity wall of the pump cavity 13, a crescent block 62 is formed on the left side surface of the eccentric shaft disc 6, the left end of the aforementioned eccentric shaft 5 corresponds to the lower side of the concave arc surface 621 of the crescent block 62, and the aforementioned star-shaped wheel 4 is rotatably arranged at the left end of the eccentric shaft 5.

[0023] The technical points of the technical scheme provided by the utility model are as follows: the aforementioned eccentric shaft head hole 61 is a circular truncated cone hole and is provided with an eccentric shaft head dismounting screw fixing hole 611 at the bottom, the right end of the aforementioned eccentric shaft 5 is formed as a circular truncated cone body 51, the circular truncated cone body 51 cooperates with the aforementioned circular truncated cone hole, an eccentric shaft dismounting screw 52 is axially arranged on the eccentric shaft 5 and extends from the left end of the eccentric shaft 5 to the right end of the eccentric shaft 5 and protrudes from the right end face of the eccentric shaft 5 to be fixed with the aforementioned eccentric shaft head dismounting screw fixing hole 611.

[0024] According to professional common sense, the diameter of the aforementioned eccentric shaft head hole 61, that is, the inner diameter, gradually decreases from left to right, accordingly, the taper of the aforementioned circular truncated cone body 51 is adapted to the eccentric shaft head hole 61, that is, the taper gradually increases from left to right, so that the part of the circular truncated cone body 51 of the right end of the eccentric shaft 5 and the eccentric shaft head hole 61 of the circular truncated cone hole form a loose and free plugging cooperation relationship, and this cooperation relationship is also called taper or taper cooperation relationship. This structure is an ideal design made by the inventor of the present application to overcome technical prejudice, so that the eccentric shaft 5 and the eccentric shaft disc 6 can be conveniently and quickly disassembled, because as long as the eccentric shaft dismounting screw 52 is loosened, that is, the eccentric shaft dismounting screw 52 is withdrawn from the eccentric shaft head dismounting screw fixing hole 611, the eccentric shaft 5 and the eccentric shaft disc 6 can be separated by hand, and vice versa. Therefore, the technical scheme provided by the present application fully makes up for the technical problems mentioned by the applicant in the above background technology column and truly realizes the technical effects recorded in the technical effect column.

[0025] Please seeFigure 2 And in combination Figure 1 , the right side of the aforementioned eccentric shaft disc 6 has an eccentric shaft disc sliding seat 63 integrally formed with (to be mentioned below) a eccentric shaft disc sliding seat connecting head 631; the aforementioned star wheel 4 rotatably sleeved on the left end of the aforementioned eccentric shaft 5 cooperates with the toothed disc teeth 71 formed on the right side of the toothed disc 7 and at the same time cooperates with the aforementioned crescent block 62, the left side of the aforementioned toothed disc 7 is formed with a toothed disc rear end surface 72, a toothed disc shaft 721 extends in the center of the toothed disc rear end surface 72, and the toothed disc shaft 721 is connected with a power transmission device 8.

[0026] By Figure 2 , a mechanical seal 7211 is arranged on the toothed disc shaft 721 of the toothed disc rear end surface 72, and a bearing seat 7212 is fixed to the left end surface of the pump body 1 by a set of fastening screws 72121. The material such as ice cream introduced from the feeding port 11 first reaches the toothed disc rear end surface 72, is collected into the feeding groove 131 to be mentioned below, and is then cooperated by the star wheel 4, the crescent block 62 and the toothed disc teeth 71 to be output from the discharging port 12. The feeding port 11 and the discharging port 12 are respectively located above and below the left end of the pump 1, but the discharging port 12 is located to the right of the feeding port 11 (i.e. lower right) on the pump body 1.

[0027] Continued to see Figures 1-2 , the aforementioned power transmission device 8 is directly connected with the aforementioned toothed disc shaft 721; the aforementioned eccentric shaft disc sliding seat 63 has an eccentric shaft disc sliding seat connecting head 631, which is locked by a locking nut 6311 after sequentially passing through the aforementioned partition disc 2, the aforementioned sealing disc 3 and the aforementioned pump cover 14 to the right, and the eccentric shaft disc sliding seat connecting head 631 is sealed between the partition disc 2 at the position corresponding to the partition disc 2; the sealing disc rim of the aforementioned sealing disc 3 is sealed with the cavity wall of the aforementioned pump cavity 13.

[0028] As a preferred solution, the eccentric shaft disc sliding seat connector 631 is of a stepped structure, and specifically comprises, from left to right, an eccentric shaft disc sliding seat connector outer threaded section 6312, a narrowing transition section 6313, and a locking nut fixing threaded head 6314. An eccentric shaft disc sliding seat connector matching hole 33 is formed in the center of the sealing disc 3, and a narrowing transition section matching hole 143 is formed in the center of the pump cover 14. The eccentric shaft disc sliding seat connector 631 matches the eccentric shaft disc sliding seat connector matching hole 33. The eccentric shaft disc sliding seat connector outer threaded section 6312 extends to the right of the sealing disc 3 and is threadedly provided with an eccentric shaft disc sliding seat connector outer threaded section limiting nut 63121. The narrowing transition section 6313 matches the narrowing transition section matching hole 143. The locking nut fixing threaded head 6314 extends to the right of the pump cover 14, and the locking nut 6311 mentioned above is screwed onto the locking nut fixing threaded head 6314, thereby limiting the end, i.e., the right end, of the eccentric shaft disc sliding seat connector 631 by the locking nut 6311. This design ensures the concentricity of the entire eccentric shaft disc sliding seat connector 631 because the locking nut fixing threaded head 6314 extends out of the pump cover 14 and is locked by the locking nut 6311.

[0029] Preferably, the eccentric shaft disc sliding seat connector 631 is provided with a key 6315, and a key matching groove 331 is formed in the hole wall of the eccentric shaft disc sliding seat connector matching hole 33. The key 6315 matches the key matching groove 331.

[0030] The space between the facing side of the eccentric shaft disc 6 and the facing side of the partition disc 2 forms a first air cavity 17a that communicates with the first inlet and outlet port 15, and the space between the facing side of the partition disc 2 and the facing side of the sealing disc 3 forms a second air cavity 17b that communicates with the second inlet and outlet port 16.

[0031] As mentioned above, the eccentric shaft disc sliding seat 63 is integrally formed with the eccentric shaft disc 6, which means that the eccentric shaft disc sliding seat 63 is integrally machined on the eccentric shaft disc 6.

[0032] The positions of the feed port 11 and the discharge port 12 are staggered, and the position of the feed port 11 on the pump body 1 corresponds to the rear end surface 72 of the toothed disc, and the position of the discharge port 12 on the pump body 1 corresponds to the tooth 71 of the toothed disc. The pump cavity 13 is recessed with an above-mentioned feed groove 131, which corresponds to the below of the feed port 11. The feed groove 131 communicates with the discharge port 12 and forms a 90° positional relationship with the discharge port 12, i.e., the feed groove 131 is in a 90° relationship with the discharge port 12.

[0033] Preferably, a positioning pin 31 is fixed on the right side surface of the sealing disc 3, and a positioning pin limiting sleeve 141 is fixed on the surface of the pump cover 14 corresponding to the position of the positioning pin 31. The positioning pin 31 penetrates into the positioning pin limiting sleeve 141 and cooperates with the positioning pin limiting sleeve 141.

[0034] Preferably, a pair of eccentric shaft disc sealing ring grooves 64 are formed on the eccentric shaft disc flange of the eccentric shaft disc 6, and an eccentric shaft disc sealing ring 641 is embedded in the eccentric shaft disc sealing ring groove 64 to form a sealing fit between the eccentric shaft disc 6 and the cavity wall of the pump cavity 13. The applicant needs to point out that if the number of eccentric shaft disc sealing ring grooves 64 is increased (such as to three) or reduced (such as to one), it should be considered as a formal change rather than a substantial change and still belongs to the technical scope of the present disclosure.

[0035] Preferably, a partition disc flange sealing ring 21 is sleeved on the partition disc flange of the partition disc 2 to block the first air cavity 17a and the second air cavity 17b. A partition disc limiting snap ring 132 is arranged around the circumference of the cavity wall of the pump cavity 13 corresponding to the left side and the right side of the partition disc 2, respectively, to limit the partition disc 2.

[0036] Further, a sealing disc flange sealing ring 32 is sleeved on the sealing disc flange of the sealing disc 3 to seal the second air cavity 17b. The first inlet and outlet port 15 and the second inlet and outlet port 16 are connected with the compressed air generating device pipeline in use. In this embodiment, the compressed air generating device is an air compressor, but a turbo expander or a hydraulic pneumatic accumulator or other similar devices can also be used.

[0037] In the working state, the first air cavity 17a is introduced into the first air cavity 17a by the first air inlet 15 (the first air cavity 17b is exhausted), the eccentric shaft disc 6 is moved to the left, and the gear disc 7, the star wheel 4 and the crescent block 62 driven by the power transmission device 8 are cooperated to the working state. The material such as ice cream material enters the gear disc rear end surface 72 from the feed inlet 11, and then reaches the feed groove 131, until the star wheel teeth 41 of the star wheel 4 and the gear teeth 71 of the gear disc are cooperated to be extruded (discharged) from the discharge port 12.

[0038] When to clean, then by the second air inlet 16 from the second air chamber 17b (first air chamber 17a exhaust) will be introduced into the pressure air sealed disc 3 to the right of the displacement, because the sealed disc 3 is with eccentric shaft disc slide seat 63 eccentric shaft disc 6 of the integral structure (that is, the two are connected), therefore by the sealed disc 3 through the eccentric shaft disc slide seat 63 along with the eccentric shaft disc 6 to the right of the displacement, cleaning liquid from the feed inlet 11 is introduced, in turn through the toothed disc rear end surface 72 and feed groove 131 from the star wheel 4 and toothed disc teeth 71 parts into the discharge port 12, in the above cleaning process, a part of the cleaning liquid from the toothed disc 7 and pump cavity 13 between the gap through, so that the toothed disc 7 can be cleaned as a whole, to ensure the next shift processing of food hygiene.

[0039] When to clean, then by the second air inlet 16 from the second air chamber 17b (first air chamber 17a exhaust) will be introduced into the pressure air sealed disc 3 to the right of the displacement, because the sealed disc 3 is with eccentric shaft disc slide seat 63 eccentric shaft disc 6 of the integral structure (that is, the two are connected), therefore by the sealed disc 3 through the eccentric shaft disc slide seat 63 along with the eccentric shaft disc 6 to the right of the displacement, cleaning liquid from the feed inlet 11 is introduced, in turn through the toothed disc rear end surface 72 and feed groove 131 from the star wheel 4 and toothed disc teeth 71 parts into the discharge port 12, in the above cleaning process, a part of the cleaning liquid from the toothed disc 7 and pump cavity 13 between the gap through, so that the toothed disc 7 can be cleaned as a whole, to ensure the next shift processing of food hygiene. Figure 2 When to clean, then by the second air inlet 16 from the second air chamber 17b (first air chamber 17a exhaust) will be introduced into the pressure air sealed disc 3 to the right of the displacement, because the sealed disc 3 is with eccentric shaft disc slide seat 63 eccentric shaft disc 6 of the integral structure (that is, the two are connected), therefore by the sealed disc 3 through the eccentric shaft disc slide seat 63 along with the eccentric shaft disc 6 to the right of the displacement, cleaning liquid from the feed inlet 11 is introduced, in turn through the toothed disc rear end surface 72 and feed groove 131 from the star wheel 4 and toothed disc teeth 71 parts into the discharge port 12, in the above cleaning process, a part of the cleaning liquid from the toothed disc 7 and pump cavity 13 between the gap through, so that the toothed disc 7 can be cleaned as a whole, to ensure the next shift processing of food hygiene.

[0040] The technical scheme of the utility model makes up for the defects in the prior art, successfully completes the invention task, and truly realizes the technical effects described in the technical effect column above.

Claims

1. A mating structure of an eccentric shaft and an eccentric disc in a gear pump for filling dairy products, the gear pump comprising a pump body (1), the left end of which has an inlet (11) and an outlet (12), the inlet and outlet (11, 12) communicating with the pump chamber (13) of the pump body (1), and the right end of the pump body (1) having a first air inlet / outlet (15) and a second air inlet / outlet (16) communicating with the pump chamber (13), and the pump body (1) A pump cover (14) is provided on the right end face of the pump chamber (13); a partition (2) and a sealing disc (3). The partition (2) is positioned at the right end of the pump chamber (13) corresponding to the first and second air inlets and outlets (15, 16), and the edge of the partition (2) forms a seal with the cavity wall of the pump chamber (13). The sealing disc (3) is disposed in the pump chamber (13) with a left-right displacement at the position located to the right of the partition (2), and the sealing disc (3) has a... The sealing disc rim is sealed to the wall of the pump chamber (13); a star wheel (4) is rotatably disposed in the pump chamber (13) at a position corresponding to the discharge port (12); the mating structure of the eccentric shaft and the eccentric shaft disc includes an eccentric shaft (5) and an eccentric shaft disc (6), the right end of the eccentric shaft (5) is connected to the eccentric shaft head hole (61) opened on the left side of the eccentric shaft disc (6), and the eccentric shaft disc (6) is located at the first inlet The outlet (15) is positioned on the left side of the pump chamber (13) and is movably positioned to move left and right. The edge of the eccentric shaft disk (6) is sealed to the wall of the pump chamber (13). A crescent block (62) is formed on the left side of the eccentric shaft disk (6). The left end of the eccentric shaft (5) corresponds to the area below the concave arc surface (621) of the crescent block (62). The star wheel (4) is rotatably positioned at the left end of the eccentric shaft (5). The eccentric shaft head hole (61) is a circular truncated cone hole and is provided with an eccentric shaft head dismounting screw fixing hole (611) at the bottom, the right end of the eccentric shaft (5) is formed as a circular truncated cone body (51) matched with the circular truncated cone hole, an eccentric shaft dismounting screw (52) is axially arranged on the eccentric shaft (5) and extends to the right end of the eccentric shaft (5) and projects from the right end surface of the eccentric shaft (5) and is fixed in the eccentric shaft head dismounting screw fixing hole (611).

2. The matching structure of eccentric shaft and eccentric shaft disc of a gear pump for dairy product filling according to claim 1, characterized in that: The eccentric shaft disc sliding seat (63) is provided on the right side of the eccentric shaft disc (6), the star-shaped wheel (4) rotatably sleeved on the left end of the eccentric shaft (5) is matched with the toothed disc teeth (71) formed on the right side of the toothed disc (7) and at the same time matched with the crescent block (62), the left side of the toothed disc (7) is formed as a toothed disc rear end surface (72), a toothed disc shaft (721) extends in the center of the toothed disc rear end surface (72), and the toothed disc shaft (721) is connected with a power transmission device (8).

3. The matching structure of eccentric shaft and eccentric shaft disc of a gear pump for dairy product filling according to claim 2, characterized in that: The power transmission device (8) is directly connected with the toothed disc shaft (721), the eccentric shaft disc sliding seat (63) is provided with an eccentric shaft disc sliding seat connecting head (631), the eccentric shaft disc sliding seat connecting head (631) is locked by a locking nut (6311) after sequentially penetrating through the partition disc (2), the sealing disc (3) and the pump cover (14) from right to left, and the eccentric shaft disc sliding seat connecting head (631) is sealed between the partition disc (2) at a position corresponding to the partition disc (2); the sealing disc disc rim of the sealing disc (3) is sealed with the cavity wall of the pump cavity (13).

4. The eccentric shaft and eccentric shaft disc mating structure of a gear pump for dairy product filling according to claim 2, characterized in that: The space between the opposite sides of the eccentric shaft disc (6) and the partition disc (2) is formed as a first air cavity (17a) communicated with the first air inlet and outlet (15), and the space between the opposite sides of the partition disc (2) and the sealing disc (3) is formed as a second air cavity (17b) communicated with the second air inlet and outlet (16).

5. The matching structure of the eccentric shaft and the eccentric shaft disc of the gear pump for milk product filling according to claim 3 or 4, characterized in that: The eccentric shaft disc sliding seat (63) is integrally formed with the eccentric shaft disc (6).

6. The eccentric shaft and eccentric shaft disc mating structure of a gear pump for dairy product filling according to claim 2, characterized in that: The positions of the feeding port (11) and the discharging port (12) are staggered with each other, the position of the feeding port (11) on the pump body (1) corresponds to the toothed disc rear end surface (72), and the position of the discharging port (12) on the pump body (1) corresponds to the toothed disc teeth (71); a feeding groove (131) is concavely arranged in the pump cavity (13), the feeding groove (131) corresponds to the position below the feeding port (11), the feeding groove (131) is communicated with the discharging port (12) and has a positional relationship of 90° with the discharging port (12).

7. The eccentric shaft and eccentric shaft disc mating structure of a gear pump for dairy product filling according to claim 1, characterized in that: A positioning pin (31) is fixed on the side surface of the sealing disc (3) facing the pump cover (14), and a positioning pin limiting sleeve (141) is fixed on the surface of the pump cover (14) facing the sealing disc (3) and at a position corresponding to the positioning pin (31), the positioning pin (31) projects into the positioning pin limiting sleeve (141) and is matched with the positioning pin limiting sleeve (141).

8. The eccentric shaft and eccentric shaft disc mating structure of a gear pump for dairy product filling according to claim 1, characterized in that: At least one eccentric shaft disc sealing ring groove (64) is formed on the eccentric shaft disc flange of the eccentric shaft disc (6), and an eccentric shaft disc sealing ring (641) is embedded in the eccentric shaft disc sealing ring groove (64) to form a sealing fit between the eccentric shaft disc (6) and the cavity wall of the pump cavity (13).

9. The eccentric shaft and eccentric shaft disc mating structure of a gear pump for dairy product filling according to claim 4, characterized in that: A partition disc flange sealing ring (21) for blocking the first air cavity (17a) and the second air cavity (17b) is sleeved on the partition disc flange of the partition disc (2), and a partition disc limiting snap ring (132) for limiting the partition disc (2) is arranged around the circumference of the cavity wall at positions corresponding to the left side and the right side of the partition disc (2) respectively on the cavity wall of the pump cavity (13), and the partition disc limiting snap ring (132) is in contact with the edge of the side surface of the partition disc (2).

10. The eccentric shaft and eccentric shaft disc mating structure of a gear pump for dairy product filling according to claim 4, characterized in that: A sealing disc flange sealing ring (32) for sealing the second air cavity (17b) is sleeved on the sealing disc flange of the sealing disc (3), and the sealing disc flange sealing ring (32) is in sealing fit with the cavity wall of the pump cavity (13); in the use state, the first air inlet and outlet (15) and the second air inlet and outlet (16) are connected with the compressed air generating device pipeline, and the compressed air generating device is an air compressor, a turbo expander or a hydraulic pneumatic accumulator.

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