Vane pump and stuffing adding machine

Abstract

The utility model discloses a vane pump and a stuffing adding machine, which belong to the technical field of filling equipment and comprise a pump body, a rotor and vanes. The blades are movably inserted into the rotor, the pump body comprises a pump base and an inner cam arranged in the pump base, and the rotor is arranged in the inner cam so that the ends of the blades can make contact with the inner wall of the inner cam when the rotor rotates; the inner wall comprises a pressurizing wall and a buffering wall, and the distance between the pressurizing wall and a rotating shaft of the rotor is smaller than that between the buffering wall and the rotating shaft of the rotor, so that the volume of a space formed by the blades and the pressurizing wall is smaller than that of a space formed by the blades and the buffering wall; the inner cam is provided with a feeding port and a discharging port, and the feeding port and the discharging port are both formed in the pressurizing wall. The vane pump and the stuffing adding machine solve the problem that due to the fact that an existing vane pump continuously extrudes slurry or materials, the taste of the slurry or the materials is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of filling equipment, in particular to a vane pump and a stuffing machine. Background Art

[0002] As people's living standards improve, their demand for desserts of various shapes is increasing. Existing stuffing machines or filling machines will use a vane pump to fill fluid or semi-fluid slurries such as batter, cream, jam, salad dressing, or non-fluid materials such as mung bean filling and durian filling into or on the surface of desserts. For example, the Chinese utility model patent "A Vane Pump and Filling Machine" with application number 202322784688.4 discloses that a vane roller with a retractable vane member is installed in the pump cavity to realize the conveying of slurry or material. However, after the slurry or material enters the pump cavity, the vane pump will be continuously squeezed until it is discharged from the discharge port. After being squeezed for a long time, the slurry or material will change its taste, thereby affecting the quality of the final product. Utility Model Content

[0003] In order to overcome the defects of the prior art, one purpose of the present invention is to provide a stuffing machine to solve the above problems.

[0004] In order to overcome the defects of the prior art, another object of the present invention is to provide a vane pump to solve the above-mentioned problems.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a vane pump, comprising a pump body, a rotor and vanes;

[0006] The blades are movably connected to the rotor, the pump body includes a pump seat and an inner cam arranged in the pump seat, and the rotor is arranged in the inner cam so that the ends of the blades contact the inner wall of the inner cam when the rotor rotates;

[0007] The inner wall includes a pressure wall and a buffer wall, wherein the distance between the pressure wall and the rotating axis of the rotor is smaller than the distance between the buffer wall and the rotating axis of the rotor, so that the volume of the space formed by the blades and the pressure wall is smaller than the volume of the space formed by the blades and the buffer wall;

[0008] The inner cam is provided with a feed port and a discharge port, and both the feed port and the discharge port are opened on the pressurizing wall.

[0009] Preferably, the inner wall further comprises a transition wall, and the transition wall is arranged between two adjacent pressurizing walls, between two adjacent buffer walls and / or between an adjacent pressurizing wall and a buffer wall;

[0010] The distance between the transition wall and the rotor axis is greater than the distance between the pressure wall and the rotor axis and less than the distance between the buffer wall and the rotor axis;

[0011] The distance from the rotor axis to the same transition wall is the same everywhere.

[0012] Optionally, partitions and end covers are provided in sequence on both sides of the pump seat, and one end of the rotor passes through the partitions and end covers in sequence from one side of the pump seat and is then connected to the drive motor.

[0013] It is worth noting that a first pin hole is opened on the side of the inner cam, and a second pin hole is opened on the partition. The first pin hole corresponds to the second pin hole one by one, and the pin shaft passes through the second pin hole and the first pin hole in sequence to connect the partition to the side of the inner cam.

[0014] Specifically, the end cover is provided with a first positioning pin and a second positioning pin, a positioning hole matching the first positioning pin is opened on the side of the pump seat, and a recess matching the second positioning pin is provided at the end of the pin shaft.

[0015] Optionally, the rotor is provided with diameter grooves corresponding one to one with the blades, and the blades are movably arranged in the diameter grooves;

[0016] The blade includes an abutment portion and an avoidance connection portion. The abutment portion is provided at both ends of the avoidance connection portion. The avoidance connection portions of the plurality of blades are cross-distributed in the rotor.

[0017] A stuffing machine uses the vane pump and comprises a feed hopper and a discharge nozzle, wherein the feed nozzle is connected to the feed hopper, and the discharge nozzle is connected to the discharge nozzle.

[0018] The beneficial effect of the present invention is that: in the vane pump, the rotor drives the vane to rotate in the inner cam, and after the end of the vane contacts the inner wall of the inner cam, when the rotor rotates, the vane can slide relative to the rotor according to the shape change of the inner wall of the inner cam, ensuring that the end of the vane contacts the inner wall of the inner cam, and when the slurry or material enters the interior of the inner cam from the feed port, it will first be in the space surrounded by the vane and the pressurized wall, and then as the rotor drives the vane to rotate, the vane will push the slurry or material into the space surrounded by the vane and the buffer wall. At this time, since the volume of the space becomes larger, the slurry or material can be prevented from being squeezed for a long time. Finally, when it needs to be discharged from the discharge port, the slurry or material will enter another space surrounded by the vane and the pressurized wall to achieve pressurization, thereby squeezing the slurry or material out of the discharge port. In this way, the taste of the slurry or material can be guaranteed, thereby ensuring the quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a stuffing machine in one embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a vane pump in one embodiment of the present invention;

[0021] Figure 3 This is an exploded view of a vane pump in one embodiment of the present invention;

[0022] Figure 4 This is a schematic structural diagram of an inner cam, a rotor, and blades in one embodiment of the present invention;

[0023] Figure 5 This is a schematic structural diagram of an inner cam in one embodiment of the present utility model;

[0024] Figure 6 This is a schematic structural diagram of an end cover in one embodiment of the present utility model;

[0025] Figure 7 This is a schematic structural diagram of a rotor and blades in one embodiment of the present invention;

[0026] In the figure: 1 pump body; 11 inner cam; 111 pressurizing wall; 112 buffer wall; 113 transition wall; 114 feed port; 115 discharge port; 116 first pin hole; 12 pump seat; 121 positioning hole; 2 rotor; 21 diameter groove; 3 blade; 31 abutment portion; 32 avoidance connection portion; 4 end cover; 41 first positioning pin; 42 second positioning pin; 5 partition; 51 second pin hole; 6 pin shaft; 61 recessed portion; 7 drive motor; 8 feed hopper; 9 discharge nozzle. DETAILED DESCRIPTION

[0027] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0028] like Figure 1-7 As shown, a vane pump includes a pump body 1, a rotor 2 and vanes 3;

[0029] The blades 3 are movably connected to the rotor 2. The pump body 1 includes a pump seat 12 and an inner cam 11 disposed in the pump seat 12. The rotor 2 is disposed in the inner cam 11 so that the ends of the blades 3 contact the inner wall of the inner cam 11 when the rotor 2 rotates.

[0030] The inner wall includes a pressure wall 111 and a buffer wall 112. The distance between the pressure wall 111 and the rotation axis of the rotor 2 is smaller than the distance between the buffer wall 112 and the rotation axis of the rotor 2, so that the volume of the space formed by the blade 3 and the pressure wall 111 is smaller than the volume of the space formed by the blade 3 and the buffer wall 112.

[0031] The inner cam 11 is provided with a feed port 114 and a discharge port 115 , and both the feed port 114 and the discharge port 115 are opened on the pressure wall 111 .

[0032] like Figure 2 and 4 The arrow shown indicates the direction of rotation of the rotor 2. In the vane pump, the rotor 2 drives the vanes 3 to rotate within the inner cam 11. After the ends of the vanes 3 contact the inner wall of the inner cam 11, as the rotor 2 rotates, the vanes 3 slide relative to the rotor 2 according to the shape change of the inner wall of the inner cam 11, ensuring that the ends of the vanes 3 contact the inner wall of the inner cam 11. When the slurry or material enters the interior of the inner cam 11 from the feed port 114, it is first located in the space enclosed by the vanes 3 and the pressurizing wall 111. Then, as the rotor 2 drives the vanes 3 to rotate, the vanes 3 push the slurry or material into the space enclosed by the vanes 3 and the buffer wall 112. At this time, due to the increased volume of the space, the slurry or material is prevented from being squeezed for a long time. Finally, when it is needed to be discharged from the discharge port 115, the slurry or material enters another space enclosed by the vanes 3 and the pressurizing wall 111, achieving pressurization, thereby forcing the slurry or material out of the discharge port 115. In this way, the taste of the slurry or material can be guaranteed, thereby ensuring the quality of the final product.

[0033] Preferably, Figure 2 and 4 As shown, the inner wall further includes a transition wall 113, and the transition wall 113 is disposed between two adjacent pressurizing walls 111, between two adjacent buffer walls 112, and / or between an adjacent pressurizing wall 111 and a buffer wall 112;

[0034] The distance between the transition wall 113 and the rotation axis of the rotor 2 is greater than the distance between the pressure wall 111 and the rotation axis of the rotor 2 and is smaller than the distance between the buffer wall 112 and the rotation axis of the rotor 2, so that the volume of the space formed by the blade 3 and the transition wall 113 is greater than the volume of the space formed by the blade 3 and the pressure wall 111 and smaller than the volume of the space formed by the blade 3 and the buffer wall 112;

[0035] The distance from the rotating shaft of the rotor 2 to the same transition wall 113 is the same everywhere, ensuring that the slurry and materials can flow at a uniform speed in this space.

[0036] like Figure 4As shown, the pressure wall 111, the buffer wall 112 and the transition wall 113 are divided by dotted lines. The distance between the pressure wall 111 and the rotating shaft of the rotor 2 will change. The pressure wall 111 at the position of the feed port 114 increases as it moves away from the feed port 114, thereby reducing the pressure. The pressure wall 111 at the position of the discharge port 115 decreases as it moves closer to the discharge port 115, thereby increasing the pressure and making the slurry or material The material is extruded; the distance from the buffer wall 112 to the rotating shaft of the rotor 2 will change, wherein the buffer wall 112 close to the feed port 114, the distance from the buffer wall 112 to the rotating shaft of the rotor 2 will continue to increase in the direction away from the feed port 114, thereby further reducing the pressure, so that the slurry or material will not be squeezed for a long time; the buffer wall 112 close to the discharge port 115, the distance from the buffer wall 112 to the rotating shaft of the rotor 2 will continue to decrease in the direction close to the discharge port 115, and the pressure will be increased in advance to prepare for entering the discharge port 115.

[0037] like Figure 4 As shown, when the blade 3 re-enters the space where the feed port 114 is located from the space where the discharge port 115 is located, the rotating shaft will contact the transition wall 113 between the two pressurized walls 111, and the end of the blade 3 will be completely retracted into the interior of the rotor 2, so that the air at this position can be discharged. When the blade 3 rotates to the space where the feed port 114 is located, a vacuum can be formed, thereby achieving the purpose of sucking the slurry or material from the feed port 114.

[0038] Optional, such as Figure 3 As shown, a partition plate 5 and an end cap 4 are sequentially provided on both sides of the pump base 12. One end of the rotor 2 passes through the partition plate 5 and the end cap 4 from one side of the pump base 12 and is then connected to the drive motor 7. In this embodiment, one end of the rotor 2 is connected to the drive motor 7 via a belt. A sealing strip is provided between the partition plate 5 and the pump base 12 to ensure the sealing of the space within the inner cam 11.

[0039] Specifically, a first pin hole 116 is defined on the side of the inner cam 11, and a second pin hole 51 is defined on the partition plate 5. The first pin hole 116 corresponds to the second pin hole 51, and the pin 6 passes through the second pin hole 51 and the first pin hole 116 in sequence to connect the partition plate 5 to the side of the inner cam 11. This allows for detachable assembly. To maintain the rotor 2 and blades 3, the partition plate 5 can be removed by disassembling the end cover 4 and loosening the pin 6, thereby exposing the rotor 2 and blades 3 within the inner cam 11.

[0040] It is worth noting that if Figure 3 and 6As shown, the end cover 4 is provided with a first locating pin 41 and a second locating pin 42. A locating hole 121 is provided on the side of the pump base 12 to match the first locating pin 41. The end of the pin shaft 6 is provided with a recessed portion 61 to match the second locating pin 42. In this way, the end cover 4 can be clamped to the pump base 12 while also being clamped to the partition 5, thus achieving a three-way connection between the end cover 4, the partition 5, and the pump base 12.

[0041] Preferably, Figure 3 and 7 As shown, the rotor 2 is provided with diameter grooves 21 corresponding to the blades 3 one by one, and the blades 3 are movably arranged in the diameter grooves 21; in this embodiment, the diameter grooves 21 are arranged along the diameter of the rotating shaft;

[0042] The blade 3 includes an abutment portion 31 and an avoidance connection portion 32 . The abutment portion 31 is provided at both ends of the avoidance connection portion 32 . The avoidance connection portions 32 of the plurality of blades 3 are cross-distributed in the rotor 2 .

[0043] The blade 3 has a C-shaped structure, so that a space can be left between the two abutting portions 31. When the avoidance connection portions 32 of multiple blades 3 are cross-distributed in the rotor 2, the avoidance connection portions 32 of different blades 3 will not contact each other, thereby ensuring that the blade 3 can slide relative to the rotor 2.

[0044] A stuffing machine uses the vane pump, including a feed hopper 8 and a discharge nozzle 9, wherein the feed port 114 is connected to the feed hopper 8 to feed the pump body 1, and the discharge port 115 is connected to the discharge nozzle 9 to discharge the pump body 1.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A vane pump, characterized in that: Including pump body, rotor and blades; The blades are movably connected to the rotor, the pump body includes a pump seat and an inner cam arranged in the pump seat, and the rotor is arranged in the inner cam so that the ends of the blades contact the inner wall of the inner cam when the rotor rotates; The inner wall includes a pressure wall and a buffer wall, wherein the distance between the pressure wall and the rotating axis of the rotor is smaller than the distance between the buffer wall and the rotating axis of the rotor, so that the volume of the space formed by the blades and the pressure wall is smaller than the volume of the space formed by the blades and the buffer wall; The inner cam is provided with a feed port and a discharge port, and the feed port and the discharge port are both opened on the pressure wall; Both sides of the pump seat are provided with partitions and end covers in sequence, and one end of the rotor passes through the partition and end cover in sequence from one side of the pump seat and is connected to the drive motor; a first pin hole is provided on the side of the inner cam, and a second pin hole is provided on the partition, and the first pin hole corresponds to the second pin hole one by one, and the pin shaft passes through the second pin hole and the first pin hole in sequence to connect the partition to the side of the inner cam.

2. A vane pump according to claim 1, characterized in that: The inner wall further includes a transition wall, which is arranged between two adjacent pressurizing walls, between two adjacent buffer walls, and / or between an adjacent pressurizing wall and a buffer wall; The distance between the transition wall and the rotor axis is greater than the distance between the pressure wall and the rotor axis and less than the distance between the buffer wall and the rotor axis; The distance from the rotor axis to the same transition wall is the same everywhere.

3. A vane pump according to claim 1, characterized in that: The end cover is provided with a first positioning pin and a second positioning pin, a side of the pump seat is provided with a positioning hole matched with the first positioning pin, and an end of the pin shaft is provided with a recessed portion matched with the second positioning pin.

4. A vane pump according to claim 1, characterized in that: The rotor is provided with diameter grooves corresponding to the blades one by one, and the blades are movably arranged in the diameter grooves; The blade includes an abutment portion and an avoidance connection portion. The abutment portion is provided at both ends of the avoidance connection portion. The avoidance connection portions of the plurality of blades are cross-distributed in the rotor.

5. A stuffing machine, characterized in that: The vane pump according to any one of claims 1 to 4 comprises a feed hopper and a discharge nozzle, wherein the feed nozzle is connected to the feed hopper, and the discharge nozzle is connected to the discharge nozzle.

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