A homogenizing device for preparing hemostatic and coagulating liquid dressing

Abstract

The present invention discloses a homogenizing device for preparing hemostatic and coagulating fluid dressings in the technical field of stirring equipment, comprising a bottom plate, a sealing cylinder, a collecting cylinder and a mixing cylinder, wherein the sealing cylinder is sleeved on the outer side of the mixing cylinder and the sealing cylinder is fixedly connected to the mixing cylinder; the collecting cylinder is located above the bottom plate and below the sealing cylinder, and the collecting cylinder and the sealing cylinder are sealed and fitted together; a mixing mechanism is arranged in the mixing cylinder, and the mixing mechanism is used to uniformly mix the various raw materials in the mixing cylinder to form a hemostatic fluid dressing; a filtering mechanism is arranged at the bottom of the mixing cylinder, and the filtering mechanism is used to filter out some solid particles contained in the hemostatic fluid dressing; an eliminating mechanism is arranged in the sealing cylinder, and the eliminating mechanism is used to eliminate bubbles contained in the filtered liquid dressing; the device has a simple structure and is easy to use, and can effectively improve the overall quality of the dressing by removing solid particles and bubbles in the dressing.

Description

Technical Field

[0001] The invention relates to the technical field of stirring equipment, in particular to a homogenizing device for preparing hemostatic and coagulating fluid dressings. Background Art

[0002] Hemostatic and coagulating dressings have the advantages of promoting wound healing quickly, being less susceptible to infection, and being simple to care for, and are now a popular wound healing medicine on the market. When preparing hemostatic and coagulating dressings, it is necessary to mix the selected raw materials such as Chinese herbal extracts, film-forming agents, and antibacterial agents with liquid dressings using a stirring device;

[0003] A large amount of air will be mixed into the dressing during the stirring and mixing process, and the air will form a large number of bubbles in the dressing. Since the dressing is a colloid and the overall texture is relatively viscous, the bubbles in the dressing are difficult to remove. In addition, after the dressing is stirred and mixed, some solid particles often remain in the dressing. Therefore, the dressing usually needs to be filtered again after mixing to remove the solid particles. Since the dressing is a colloid and has poor fluidity, the filtration speed is slow and the efficiency is low. Summary of the invention

[0004] The object of the present invention is to provide a homogenizing device for preparing hemostatic and coagulating liquid dressings, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a homogenizing device for preparing hemostatic and coagulating fluid dressings, comprising a bottom plate, a sealing cylinder, a collecting cylinder and a mixing cylinder, wherein the sealing cylinder is sleeved on the outer side of the mixing cylinder and the sealing cylinder is fixedly connected to the mixing cylinder; the collecting cylinder is located above the bottom plate and below the sealing cylinder, and the collecting cylinder is sealed and fitted with the sealing cylinder;

[0006] The mixing cylinder is provided with a mixing mechanism, and the mixing mechanism is used to evenly mix the various raw materials in the mixing cylinder to form a hemostatic liquid dressing;

[0007] A filtering mechanism is provided at the bottom of the mixing cylinder, and the filtering mechanism is used to filter some solid particles contained in the hemostatic body dressing;

[0008] An elimination mechanism is arranged in the sealing cylinder, and the elimination mechanism is used to eliminate bubbles contained in the filtered liquid dressing.

[0009] Preferably, the mixing mechanism comprises a motor, the motor is located above the mixing drum and the motor is fixedly connected to the mixing drum; a stirring rod is provided in the mixing drum and the stirring rod is rotatably connected to the mixing drum; the motor output shaft is fixedly connected to the stirring rod.

[0010] Preferably, a sealing door is provided above the mixing drum; a temperature control component is provided on the inner wall of the mixing drum, and the temperature control component is used to control the temperature during the mixing process.

[0011] Preferably, the filtering mechanism comprises a filter plate, which is located at the bottom of the mixing barrel and fixedly connected to the mixing barrel; a sealing mechanism is provided at the bottom of the filter plate, which is used to block the filter plate when mixing the hemostatic liquid dressing.

[0012] Preferably, the sealing mechanism includes a sealing plate, which is fitted with the lower surface of the filter plate; two first clamping blocks are fixedly connected to the upper edge of the sealing plate, and the two first clamping blocks are symmetrically distributed on both sides of the sealing plate; a second clamping block is provided above the first clamping block, the second clamping block is engaged with the first clamping block and the second clamping block is slidably connected to the sealing cylinder; a first spring is fixedly connected to the second clamping block, and the other end of the first spring is fixedly connected to the inner wall of the sealing cylinder; first air cylinders are provided on the side walls of the sealing cylinder at positions corresponding to the two second clamping blocks, the first air cylinder passes through the side walls of the sealing cylinder and a first piston is provided in the first air cylinder, the first piston is sealingly fitted with the inner wall of the first air cylinder and the first piston is fixedly connected to the second clamping block.

[0013] Preferably, the surfaces of the filter plate and the sealing plate are both inclined with the middle portion convex upward.

[0014] Preferably, the elimination mechanism includes an air pump, which is located above the sealing cylinder and fixedly connected to the sealing cylinder, and the air suction end of the air pump is connected to the internal space of the sealing cylinder; four second air cylinders are provided on the side wall of the sealing cylinder, and the four second air cylinders are distributed in a circular array around the sealing cylinder and the four second air cylinders are fixedly connected to the sealing cylinder; the second air cylinder passes through the side wall of the sealing cylinder and a second piston is provided in the second air cylinder, and the second piston is sealed with the inner wall of the second air cylinder; a second spring is fixedly connected to an outer end of the second piston, and the other end of the second spring is fixedly connected to the second air cylinder; a connecting rod is rotatably connected to an inner end of the second piston, and the other end of the connecting rod is rotatably connected to the sealing plate.

[0015] Preferably, support rods are symmetrically fixedly connected to the left and right sides above the bottom plate, and the support rods on the left and right sides are respectively fixedly connected to the second air cylinders on the left and right sides; a cylinder is provided between the two support rods, the bottom end of the cylinder is fixedly connected to the bottom plate and the upper end of the cylinder is fixedly connected to a support plate, and the support plate is located at the bottom of the collecting cylinder and fits with the support plate.

[0016] Preferably, a limiting sleeve is provided in the middle of the collecting tube, and the limiting sleeve is fixedly connected to the collecting tube; a limiting rod is fixedly connected to the middle of the bottom end of the sealing plate, and the limiting rod and the limiting sleeve are clearance-matched.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention starts a mixing mechanism to fully mix the materials for preparing the dressing together to form a hemostatic and coagulating liquid dressing; after the dressing is mixed, the mixing mechanism is stopped and the filtering mechanism is started at the same time, and some solid particles remaining in the dressing can be filtered out by the filtering mechanism to obtain a relatively pure dressing; the filtered dressing is collected by a collecting cylinder, and in the process of the collecting cylinder collecting the dressing, the eliminating mechanism is started, and since a large number of bubbles are mixed into the dressing when it is mixed in the mixing cylinder, the bubbles contained in the dressing can be quickly eliminated by the eliminating mechanism, thereby further improving the quality of the finished hemostatic and coagulating liquid dressing; the device has a simple structure and is easy to use, and can effectively improve the overall quality of the dressing by removing solid particles and bubbles in the dressing;

[0019] The present invention can accelerate the speed of the dressing passing through the filter plate by extracting the air in the sealing tube, thereby effectively improving the filtering efficiency of the dressing; after the dressing passes through the filter plate, it will be divided into multiple small parts by the filter plate, and most of the bubbles in the dressing will directly dissipate at this time. The retained bubbles will automatically separate from the dressing when entering the sealing tube with lower air pressure, thereby effectively improving the efficiency of bubble elimination. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of a partial cross-sectional structure in the present invention;

[0023] Figure 4 for Figure 3 Schematic diagram of the split structure;

[0024] Figure 5 It is a structural schematic diagram of the sealing mechanism in the present invention;

[0025] Figure 6 for Figure 5 A is a schematic diagram of the enlarged structure of the middle part;

[0026] Figure 7 It is a schematic cross-sectional structural diagram of the mixing mechanism in the present invention.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Bottom plate; 2. Sealing cylinder; 3. Collecting cylinder; 4. Mixing cylinder; 5. Motor; 6. Stirring rod; 7. Sealing door; 8. Filter plate; 9. Sealing plate; 10. First clamping block; 11. Second clamping block; 12. First spring; 13. First air cylinder; 14. First piston; 15. Air pump; 16. Second air cylinder; 17. Second piston; 18. Second spring; 19. Connecting rod; 20. Support rod; 21. Cylinder; 22. Support plate; 23. Limit sleeve; 24. Limit rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 7 The present invention provides a technical solution: a homogenizing device for preparing a hemostatic and coagulating fluid dressing, comprising a bottom plate 1, a sealing cylinder 2, a collecting cylinder 3 and a mixing cylinder 4, wherein the sealing cylinder 2 is sleeved on the outer side of the mixing cylinder 4 and the sealing cylinder 2 is fixedly connected to the mixing cylinder 4; the collecting cylinder 3 is located above the bottom plate 1 and below the sealing cylinder 2, and the collecting cylinder 3 is sealed and fitted with the sealing cylinder 2;

[0031] A mixing mechanism is provided in the mixing cylinder 4, and the mixing mechanism is used to evenly mix the various raw materials in the mixing cylinder 4 to form a hemostatic liquid dressing;

[0032] A filtering mechanism is provided at the bottom of the mixing cylinder 4, and the filtering mechanism is used to filter out some solid particles contained in the hemostatic liquid dressing;

[0033] The sealing tube 2 is provided with an elimination mechanism, which is used to eliminate bubbles contained in the filtered liquid dressing;

[0034] During operation, when preparing the hemostatic and coagulant liquid dressing, the selected raw materials such as the Chinese medicine extract, the film-forming agent and the antibacterial agent and the liquid dressing are put into the mixing cylinder 4, and then the mixing mechanism is started to fully mix the above materials together to form the hemostatic and coagulant liquid dressing; after the dressing is mixed, the mixing mechanism is stopped and the filtering mechanism is started at the same time, and some solid particles remaining in the dressing can be filtered out by the filtering mechanism to obtain a relatively pure dressing; the filtered dressing is collected by the collecting cylinder 3, and in the process of collecting the dressing by the collecting cylinder 3, the eliminating mechanism is started, because a large number of bubbles will be mixed into the dressing when it is mixed in the mixing cylinder 4, and the bubbles contained in the dressing can be quickly eliminated by the eliminating mechanism, thereby further improving the quality of the finished hemostatic and coagulant liquid dressing; the device has a simple structure and is easy to use, and can effectively improve the overall quality of the dressing by removing solid particles and bubbles in the dressing.

[0035] like Figure 7 As shown, as a further solution of the present invention, the mixing mechanism includes a motor 5, which is located above the mixing drum 4 and is fixedly connected to the mixing drum 4; a stirring rod 6 is provided in the mixing drum 4 and is rotatably connected to the mixing drum 4; an output shaft of the motor 5 is fixedly connected to the stirring rod 6;

[0036] A sealing door 7 is provided above the mixing cylinder 4; a temperature control component is provided on the inner wall of the mixing cylinder 4, and the temperature control component is used to control the temperature during the mixing process;

[0037] During operation, the selected raw materials such as Chinese herbal extracts, film-forming agents, antibacterial agents and liquid dressings can be put into the mixing barrel 4 by opening the sealing door 7, and then the sealing door 7 can be closed to form a sealed space in the mixing barrel 4. At this time, the stirring rod 6 can be driven to rotate by starting the motor 5. When the stirring rod 6 rotates, the components move relative to each other under the action of the stirring rod 6, thereby achieving uniform dispersion at the molecular level; when the stirring rod 6 is stirring, the temperature in the mixing barrel 4 can be controlled by the temperature control component, thereby maintaining the efficacy of the medicine and accelerating the fusion of each group.

[0038] like Figure 5-7 As shown, as a further solution of the present invention, the filtering mechanism includes a filtering plate 8, the filtering plate 8 is located at the bottom of the mixing barrel 4 and the filtering plate 8 is fixedly connected to the mixing barrel 4; a sealing mechanism is provided at the bottom of the filtering plate 8, and the sealing mechanism is used to block the filtering plate 8 when mixing the hemostatic liquid dressing;

[0039] The sealing mechanism includes a sealing plate 9, which is fitted with the lower surface of the filter plate 8; two first clamping blocks 10 are fixedly connected to the upper edge of the sealing plate 9, and the two first clamping blocks 10 are symmetrically distributed on both sides of the sealing plate 9; a second clamping block 11 is provided above the first clamping block 10, the second clamping block 11 is engaged with the first clamping block 10 and the second clamping block 11 is slidably connected to the sealing cylinder 2; a first spring 12 is fixedly connected to the second clamping block 11, and the other end of the first spring 12 is fixedly connected to the inner wall of the sealing cylinder 2; a first gas cylinder 13 is provided on the side wall of the sealing cylinder 2 at positions corresponding to the two second clamping blocks 11, the first gas cylinder 13 penetrates the side wall of the sealing cylinder 2 and a first piston 14 is provided in the first gas cylinder 13, the first piston 14 is sealed and fitted with the inner wall of the first gas cylinder 13, and the first piston 14 is fixedly connected to the second clamping block 11;

[0040] The surfaces of the filter plate 8 and the sealing plate 9 are both inclined with the middle portion convex upward;

[0041] During operation, when the dressing in the mixing cylinder 4 is mixed, the air pressure in the sealing cylinder 2 can be reduced by extracting the air in the sealing cylinder 2. When the air pressure in the sealing cylinder 2 is reduced to a certain extent, the external air pressure will push the first piston 14 to slide inward in the first cylinder 13. When the first cylinder 13 moves, it drives the second block 11 to move; after the second block 11 moves a short distance, it will separate from the first block 10. At this time, the sealing plate 9 moves downward under the pressure of the dressing in the mixing cylinder 4 to form a gap with the filter plate 8, and the dressing in the mixing cylinder 4 will pass through the filter plate 8 and flow out from the gap And finally fall into the collecting tube 3; when the air pressure in the sealing tube 2 decreases, the air pressure in the mixing tube 4 is greater than the air pressure in the sealing tube 2. After the sealing plate 9 is separated from the filter plate 8, the air pressure in the mixing tube 4 will press the dressing in the mixing tube 4, which can accelerate the dressing to pass through the filter plate 8, thereby accelerating the filtration of the dressing; since the dressing will be divided into multiple small parts by the filter plate 8 after passing through the filter plate 8, most of the bubbles in the dressing will directly dissipate at this time, and the retained bubbles will automatically separate from the dressing when they enter the sealing tube 2 with lower air pressure, thereby effectively improving the efficiency of bubble elimination.

[0042] like Figure 4-Figure 5As shown, as a further solution of the present invention, the elimination mechanism includes an air pump 15, which is located above the sealing cylinder 2 and fixedly connected to the sealing cylinder 2, and the air extraction end of the air pump 15 is connected to the internal space of the sealing cylinder 2; four second air cylinders 16 are arranged on the side wall of the sealing cylinder 2, and the four second air cylinders 16 are distributed in a circular array around the sealing cylinder 2 and the four second air cylinders 16 are fixedly connected to the sealing cylinder 2; the second air cylinder 16 passes through the side wall of the sealing cylinder 2 and a second piston 17 is arranged in the second air cylinder 16, and the second piston 17 is sealed and fitted with the inner wall of the second air cylinder 16; a second spring 18 is fixedly connected to the outer end of the second piston 17, and the other end of the second spring 18 is fixedly connected to the second air cylinder 16; a connecting rod 19 is rotatably connected to the inner end of the second piston 17, and the other end of the connecting rod 19 is rotatably connected to the sealing plate 9;

[0043] Support rods 20 are symmetrically fixedly connected to the left and right sides of the bottom plate 1, and the left and right support rods 20 are respectively fixedly connected to the second air cylinders 16 on the left and right sides; a cylinder 21 is provided between the two support rods 20, the bottom end of the cylinder 21 is fixedly connected to the bottom plate 1 and the upper end of the cylinder 21 is fixedly connected to a support plate 22, and the support plate 22 is located at the bottom of the collecting tube 3 and fits with the support plate 22;

[0044] During operation, the air in the sealing cylinder 2 can be extracted by starting the air pump. As the air pump continuously extracts the air in the sealing cylinder 2, the air pressure in the sealing cylinder 2 will gradually decrease. At this time, the external air pressure will first push the first piston 14 to slide inward in the first air cylinder 13, thereby causing the sealing plate 9 to separate from the filter plate 8; at this time, the second piston 17 slides inward in the second piston 17 under the action of the external air pressure, and the four second pistons 17 respectively drive the sealing plate 9 to move downward through the four connecting rods 19 when moving, and the interval between the sealing plate 9 and the filter plate 8 becomes larger, thereby increasing the speed at which the dressing passes through the filter plate 8; after the sealing plate 9 separates from the filter plate 8, the mixed The dressing in the mixing cylinder 4 is pressed by the air pressure in the mixing cylinder 4 to accelerate through the filter plate 8, and the dressing will eventually fall into the collecting cylinder 3 after passing through the filter plate 8; when the dressing enters the sealing cylinder 2, due to the low air pressure in the sealing cylinder 2, the bubbles in the dressing will automatically separate from the dressing, thereby achieving the effect of eliminating bubbles; when the dressing in the mixing cylinder 4 is completely transferred to the collecting cylinder 3, the air in the mixing cylinder 4 will also enter the sealing cylinder 2, which will slightly increase the air pressure in the sealing cylinder 2, and the operation of the vacuum pump 15 can be continued, so that the air pressure in the sealing cylinder 2 remains at a low state and is maintained for a period of time, which can eliminate the smaller bubbles that may remain in the dressing;

[0045] After eliminating the bubbles in the dressing, air is injected into the sealing tube 2 through the air pump 15 to make the air pressure in the sealing tube 2 reach a normal level. At this time, under the action of the first spring 12, the first piston 14 drives the second clamping block 11 to reset; under the action of the first spring 12, the second piston 17 drives the sealing plate 9 to move upward and reset through the connecting rod 19. When the sealing plate 9 and the filter plate 8 are fitted again, the first clamping block 10 on the sealing plate 9 is clamped with the second clamping block 11 again; when the air pressure in the sealing tube 2 returns to normal, the start cylinder 21 drives the support plate 22 to move downward, and the support plate 22 drives the collecting tube 3 to move downward, and the dressing can be taken out at this time.

[0046] like Figure 4 As shown, as a further solution of the present invention, a limiting sleeve 23 is provided in the middle of the collecting tube 3, and the limiting sleeve 23 is fixedly connected to the collecting tube 3; a limiting rod 24 is fixedly connected to the middle of the bottom end of the sealing plate 9, and the limiting rod 24 and the limiting sleeve 23 are clearance-matched;

[0047] During operation, the limiting rod 24 and the limiting sleeve 23 can play the role of positioning the collecting tube 3. At the same time, when the air in the sealing tube 2 is extracted, the sealing plate 9 will drop, and the limiting rod 24 can keep the sealing plate 9 able to rise and fall vertically.

Claims

1. A homogenizing device for preparing a hemostatic and coagulating liquid dressing, comprising a base plate (1), a sealing cylinder (2), a collecting cylinder (3) and a mixing cylinder (4), characterized in that: The sealing cylinder (2) is sleeved on the outside of the mixing cylinder (4), and the sealing cylinder (2) is fixedly connected to the mixing cylinder (4); the collecting cylinder (3) is located above the bottom plate (1) and below the sealing cylinder (2), and the collecting cylinder (3) is sealed and fitted with the sealing cylinder (2); A mixing mechanism is provided in the mixing cylinder (4), and the mixing mechanism is used to evenly mix the various raw materials in the mixing cylinder (4) to form a hemostatic liquid dressing; A filtering mechanism is provided at the bottom of the mixing cylinder (4), and the filtering mechanism is used to filter out some solid particles contained in the hemostatic liquid dressing; The sealing cylinder (2) is provided with an elimination mechanism, and the elimination mechanism is used to eliminate bubbles contained in the filtered liquid dressing; The filtering mechanism comprises a filtering plate (8), the filtering plate (8) being located at the bottom of the mixing cylinder (4) and the filtering plate (8) being fixedly connected to the mixing cylinder (4); a sealing mechanism is provided at the bottom of the filtering plate (8), the sealing mechanism being used to block the filtering plate (8) when mixing the hemostatic liquid dressing; The sealing mechanism comprises a sealing plate (9), the sealing plate (9) being fitted with the lower surface of the filter plate (8); two first clamping blocks (10) are fixedly connected to the upper edge of the sealing plate (9), and the two first clamping blocks (10) are symmetrically distributed on both sides of the sealing plate (9); a second clamping block (11) is provided above the first clamping block (10), the second clamping block (11) is engaged with the first clamping block (10), and the second clamping block (11) is slidably connected to the sealing cylinder (2); the second clamping block (11) 1) is fixedly connected to a first spring (12), the other end of the first spring (12) is fixedly connected to the inner wall of the sealing cylinder (2); a first gas cylinder (13) is provided on the side wall of the sealing cylinder (2) at positions corresponding to the two second clamping blocks (11), the first gas cylinder (13) passes through the side wall of the sealing cylinder (2) and a first piston (14) is provided in the first gas cylinder (13), the first piston (14) is sealingly fitted to the inner wall of the first gas cylinder (13) and the first piston (14) is fixedly connected to the second clamping block (11); The elimination mechanism comprises an air pump (15), the air pump (15) is located above the sealing cylinder (2) and is fixedly connected to the sealing cylinder (2), and the air extraction end of the air pump (15) is connected to the internal space of the sealing cylinder (2); four second air cylinders (16) are arranged on the side wall of the sealing cylinder (2), the four second air cylinders (16) are distributed around the sealing cylinder (2) in a circular array, and the four second air cylinders (16) are all fixedly connected to the sealing cylinder (2); the second air cylinder (16) passes through the side wall of the sealing cylinder (2) and a second piston (17) is arranged in the second air cylinder (16), and the second piston (17) is sealed and fitted with the inner wall of the second air cylinder (16); one end of the outer side of the second piston (17) is fixedly connected to a second spring (18), and the other end of the second spring (18) is fixedly connected to the second air cylinder (16); one end of the inner side of the second piston (17) is rotatably connected to a connecting rod (19), and the other end of the connecting rod (19) is rotatably connected to the sealing plate (9).

2. The homogenizing device for preparing a hemostatic and coagulating liquid dressing according to claim 1, characterized in that: The mixing mechanism comprises a motor (5), wherein the motor (5) is located above the mixing cylinder (4) and the motor (5) is fixedly connected to the mixing cylinder (4); A stirring rod (6) is provided in the mixing barrel (4), and the stirring rod (6) is rotatably connected to the mixing barrel (4); and the output shaft of the motor (5) is fixedly connected to the stirring rod (6).

3. The homogenizing device for preparing a hemostatic and coagulating liquid dressing according to claim 1, characterized in that: A sealing door (7) is provided above the mixing barrel (4); a temperature control component is provided on the inner wall of the mixing barrel (4), and the temperature control component is used to control the temperature during the mixing process.

4. The homogenizing device for preparing a hemostatic and coagulating liquid dressing according to claim 1, characterized in that: The surfaces of the filter plate (8) and the sealing plate (9) are both inclined with the middle portion convex upward.

5. The homogenizing device for preparing a hemostatic and coagulating liquid dressing according to claim 1, characterized in that: Support rods (20) are symmetrically fixedly connected to the left and right sides of the bottom plate (1), and the support rods (20) on the left and right sides are respectively fixedly connected to the second air cylinders (16) on the left and right sides; a cylinder (21) is provided between the two support rods (20), the bottom end of the cylinder (21) is fixedly connected to the bottom plate (1) and the top end of the cylinder (21) is fixedly connected to a support plate (22), and the support plate (22) is located at the bottom of the collection cylinder (3) and fits the support plate (22).

6. The homogenizing device for preparing a hemostatic and coagulating liquid dressing according to claim 1, characterized in that: A limiting sleeve (23) is provided in the middle of the collecting cylinder (3), and the limiting sleeve (23) is fixedly connected to the collecting cylinder (3); a limiting rod (24) is fixedly connected to the middle of the bottom end of the sealing plate (9), and the limiting rod (24) and the limiting sleeve (23) are clearance-matched.

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