A filtration device for preparing oral liquid

Abstract

The present invention belongs to the technical field of oral liquid preparation, and specifically refers to a suction filtration device for oral liquid preparation, comprising a suction filtration cartridge, a central connecting channel, a filter cartridge, an anti-accumulation type filtrate mechanism, and an increasing speed type pressure flow mechanism, wherein the central connecting channel is connected to the upper wall of the suction filtration cartridge, the filter cartridge is connected to the upper wall of the suction filtration cartridge, the anti-accumulation type filtrate mechanism is arranged inside the suction filtration cartridge, the central connecting channel, and the filter cartridge, the increasing speed type pressure flow mechanism is arranged on the anti-accumulation type filtrate mechanism, and the anti-accumulation type filtrate mechanism comprises an outer filter component, an inner filter component, and a decompression component. The present invention provides a suction filtration device for oral liquid preparation that can prevent medicinal materials in a liquid medicine from being filtered into a cake layer, reduce the probability of filter screen clogging, and ensure that small-particle medicinal materials are not drawn into the interior of the filter material, thereby ensuring the permeability of the filter material.

Description

Technical Field

[0001] The invention belongs to the technical field of oral liquid preparation, and in particular relates to a suction filtration device for oral liquid preparation. Background Art

[0002] In the oral liquid preparation process, filtration, a critical solid-liquid separation step, directly impacts the clarity and purity of the liquid, as well as the stability of subsequent processes. Its core objective is to efficiently remove insoluble impurities (such as medicinal materials and suspended particles) from the liquid while minimizing the loss of active ingredients.

[0003] The existing filtration equipment for oral liquid preparation has the following problems:

[0004] 1. As the amount of liquid medicine to be filtered decreases, the probability of the medicinal materials in the liquid medicine being filtered into a cake layer will increase. The formation of the cake layer will further increase the filtration resistance, making it inconvenient to continue the subsequent filtration operation of the liquid medicine;

[0005] 2. During the filtration process of the liquid medicine, small particles of medicinal materials will fill the pores, which will cause the filter to be blocked, affecting the permeability of the filter material, thereby reducing the filtration effect of the liquid medicine;

[0006] Therefore, it cannot meet the existing demand for use of suction filtration equipment for preparing oral liquid. Summary of the Invention

[0007] In view of the above situation, in order to overcome the defects of the existing technology, the present invention provides a filtration equipment for preparing oral liquid, which can prevent the medicinal materials in the liquid from being filtered into a cake layer, reduce the chance of filter clogging, and ensure that small particles of medicinal materials will not be drawn into the filter material, thereby ensuring the permeability of the filter material.

[0008] The technical solution adopted in this scheme is as follows: This scheme proposes a suction filtration equipment for preparing oral liquid, including a suction filter cartridge, a central connecting channel, a filter cartridge, an anti-accumulation type filtrate mechanism and an increasing speed type pressure flow mechanism. The central connecting channel is connected to the upper wall of the suction filter cartridge, and the filter cartridge is connected to the upper wall of the suction filter cartridge. The filter cartridge is opened at the upper end. The anti-accumulation type filtrate mechanism is arranged inside the suction filter cartridge, the central connecting channel and the filter cartridge. The increasing speed type pressure flow mechanism is arranged on the anti-accumulation type filtrate mechanism. The anti-accumulation type filtrate mechanism includes an outer filter component, an inner filter component and a pressure reducing component. The outer filter component is arranged inside the filter cartridge, the inner filter component is arranged inside the filter cartridge, the pressure reducing component is arranged inside the suction filter cartridge, the pressure reducing component is arranged inside the suction filter cartridge, the increasing speed type pressure flow mechanism includes a liquid pressure component and a liquid guide component. The liquid pressure component is arranged on the pressure reducing component, and the liquid guide component is arranged outside the liquid pressure component.

[0009] As a further preferred embodiment of the present invention, the decompression component includes a vacuum pump, a decompression cylinder, a decompression pipe and a pressure liquid sleeve. Multiple groups of the vacuum pumps are arranged on the side wall of the suction filter cylinder, the decompression cylinder is arranged at the bottom of the suction filter cylinder, the decompression pipe passes through the suction filter cylinder and is connected between the power end of the vacuum pump and the decompression cylinder, and the pressure liquid sleeve passes through the middle connecting channel and is connected above the decompression cylinder; the outer filter component includes an annular outer filter screen, an outer filter cotton layer, an outer filter tube, an outer filter electric valve, a liquid level sensor and a liquid suction cylinder. The liquid suction cylinder is arranged at the bottom of the filter cylinder, the liquid suction cylinder is connected to the middle connecting channel, the liquid suction cylinder is opened at the upper end, the annular outer filter screen is arranged between the inner wall of the filter cylinder and the side wall of the liquid suction cylinder, the outer filter cotton layer is arranged on the annular outer filter screen outside the liquid suction cylinder and the filter cylinder The outer filter tube passes through the middle connecting channel and is connected between the suction filter cylinder and the filter cylinder. Multiple groups of the outer filter electric valves are connected to the side wall of the pressure liquid sleeve below the middle connecting channel. The liquid level sensor is arranged on the middle side wall of the liquid suction cylinder; the inner filter assembly includes a cylindrical inner filter screen, a liquid suction groove, an annular inner filter cotton column, a telescopic tube and a guide cotton layer. The cylindrical inner filter screen is arranged on the upper wall of the circular outer filter screen outside the liquid suction cylinder. Multiple groups of the liquid suction grooves are arranged on the side wall of the liquid suction cylinder. The liquid suction grooves are through-arranged. The annular inner filter cotton column is arranged inside the liquid suction cylinder. The telescopic tube is arranged on the inner wall of the annular inner filter cotton column. Multiple groups of the guide cotton layer pass through the telescopic tube and are arranged at the bottom of the annular inner filter cotton column. The end of the guide cotton layer away from the annular inner filter cotton column is fitted with the inner wall of the middle connecting channel.

[0010] When in use, the medicinal liquid to be filtered is injected into the filter cartridge, the external filter electric valve is opened, and the vacuum pump extracts the air inside the pressure reducing cartridge through the pressure reducing tube. After the pressure in the pressure reducing cartridge is reduced, the air inside the filter cartridge is extracted through the pressure liquid sleeve and the external filter electric valve. After the internal pressure of the filter cartridge is reduced, the medicinal liquid inside the filter cartridge is extracted through the external filter tube. The medicinal materials in the medicinal liquid are intercepted inside the filter cartridge after being filtered by the circular outer filter screen and the outer filter cotton layer.

[0011] Preferably, the liquid pressure component includes a liquid pressure piston rod, a liquid pressure plate and a return spring. The liquid pressure piston rod passes through the telescopic tube and is slidably arranged inside the liquid pressure sleeve. The liquid pressure plate is arranged at one end of the top of the liquid pressure piston rod. The liquid pressure plate is in contact with the upper wall of the annular inner filter cotton column. The return spring is arranged between the upper wall of the liquid pressure plate and the top of the filter cylinder. The normal state of the return spring is a shortened setting; the liquid guiding component includes a liquid collecting cylinder and a one-way valve. The liquid collecting cylinder is arranged on the inner wall of the bottom of the central connecting channel outside the liquid pressure sleeve. The liquid collecting cylinder is opened at the upper end, and multiple groups of one-way valves are arranged on the bottom wall of the liquid collecting cylinder.

[0012] During use, the annular inner filter cotton column absorbs the liquid medicine that enters the interior of the filter cartridge. The humidity of the annular inner filter cotton column increases after it is moistened. The liquid medicine inside the annular inner filter cotton column drips under the action of gravity. The liquid medicine flows downward into the guide cotton layer. The guide cotton layer transports the dripping liquid medicine to the interior of the collecting cylinder. The collecting cylinder transports the filtered liquid medicine to the interior of the suction filter cartridge through the one-way valve. The liquid pressure piston rod slides along the liquid pressure sleeve to drive the liquid pressure plate to descend. The liquid pressure plate descends to squeeze the annular inner filter cotton column, thereby accelerating the dripping speed of the internal liquid medicine under the action of gravity, and can remove the liquid medicine adsorbed inside the annular inner filter cotton column.

[0013] Specifically, a controller is provided on the side wall of the suction filter cartridge.

[0014] Wherein, the controller is electrically connected to the external filter electric valve, the liquid level sensor and the vacuum pump respectively.

[0015] The beneficial effects achieved by adopting the above structure are as follows:

[0016] Compared with the existing technology, this solution adopts the combination of anti-accumulation type filtrate mechanism and speed-increasing type pressure flow mechanism. Under the mutual cooperation of outer filter component, inner filter component, pressure reducing component, pressure liquid component and liquid guiding component, the annular inner filter cotton column and the guide cotton layer are used to guide the liquid. Through the squeezing effect, under the condition of reducing the adsorption force of the medicinal materials inside the liquid, the filtration speed of the liquid inside the filter cartridge can be accelerated. The liquid level sensor can be set to monitor the liquid level of the liquid inside the filter cartridge in real time. When the liquid level is low to the position of the liquid level sensor, the outer filter electric valve is closed to stop filtering the liquid inside the filter cartridge. At this time, the pressure liquid sleeve The air inside is exhausted, and the pressure sleeve pulls the pressure piston rod. The pressure piston rod drives the pressure plate to press down the annular inner filter cotton column. The medicine inside the annular inner filter cotton column flows along the central connecting channel into the filter cylinder for storage. On the one hand, as the medicine liquid decreases, it can prevent the medicinal materials in the medicine liquid from being filtered into a cake layer, thereby reducing the probability of filter clogging and facilitating subsequent continuous filtration operations. On the other hand, the adsorption capacity of the annular inner filter cotton column on the medicine liquid is utilized to make part of the medicine liquid entering the filter cylinder enter the annular inner filter cotton column, reducing the amount of medicine liquid directly filtered, reducing the probability of the medicinal materials inside the medicine liquid being adsorbed into the filter layer, and ensuring the pass performance of the filter layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0018] Figure 2 This is a schematic diagram of the internal structure of this scheme;

[0019] Figure 3 This is a structural diagram of the speed-increasing pressure flow mechanism of this scheme;

[0020] Figure 4 This is a schematic diagram of the combined structure of the filter cartridge and the intermediate connecting channel of this solution;

[0021] Figure 5 This is a schematic diagram of the combined structure of the annular inner filter cotton column and the guide cotton layer of this scheme;

[0022] Figure 6 This is a schematic diagram of the combined structure of the return spring and the telescopic tube of this solution;

[0023] Figure 7 This is a schematic diagram of the structure of the liquid pipette of this scheme;

[0024] Figure 8 This is the main view of this scheme;

[0025] Figure 9 This is a side view of the scheme;

[0026] Figure 10 This is a top view of the scheme;

[0027] Figure 11 for Figure 8 AA section view;

[0028] Figure 12 for Figure 11 Part I shows a magnified structural view.

[0029] Among them, 1. Filter cartridge, 2. Central connecting channel, 3. Filter cartridge, 4. Anti-accumulation type filtrate mechanism, 5. External filter assembly, 6. Circular external filter screen, 7. External filter cotton layer, 8. External filter tube, 9. External filter electric valve, 10. Liquid level sensor, 11. Internal filter assembly, 12. Cylindrical internal filter screen, 13. Liquid suction cylinder, 14. Liquid suction trough, 15. Annular internal filter cotton column, 16. Telescopic tube, 17. Diversion cotton layer, 18. Pressure reducing assembly, 19. Vacuum pump, 20. Pressure reducing cylinder, 21. Pressure reducing pipe, 22. Liquid pressure assembly, 23. Liquid pressure sleeve, 24. Liquid pressure piston rod, 25. Liquid pressure plate, 26. Liquid guide assembly, 27. Liquid collecting cylinder, 28. One-way valve, 29. Speed-increasing type pressure flow mechanism, 30. Return spring, 31. Controller.

[0030] The accompanying drawings are used to provide further understanding of the present solution and constitute a part of the specification. Together with the embodiments of the present solution, they are used to explain the present solution and do not constitute a limitation to the present solution. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of this solution will be clearly and completely described below in conjunction with the drawings in the embodiments of this solution. Obviously, the described embodiments are only part of the embodiments of this solution, not all of the embodiments; based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this solution.

[0032] In the description of this solution, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this solution.

[0033] like Figures 1-12 As shown, the present invention proposes a suction filtration device for preparing oral liquid, comprising a suction filtration cartridge 1, a central connecting channel 2, a filter cartridge 3, an anti-accumulation type filtrate mechanism 4 and an accelerating type pressure flow mechanism 29, wherein the central connecting channel 2 is connected to the upper wall of the suction filtration cartridge 1, the filter cartridge 3 is connected to the upper wall of the suction filtration cartridge 1, the filter cartridge 3 is opened at the upper end, the anti-accumulation type filtrate mechanism 4 is arranged inside the suction filtration cartridge 1, the central connecting channel 2 and the filter cartridge 3, the accelerating type pressure flow mechanism 29 is arranged on the anti-accumulation type filtrate mechanism 4, the anti-accumulation type filtrate mechanism 4 comprises an outer filter component 5, an inner filter component 11 and a pressure reducing component 18, the outer filter component 5 is arranged inside the filter cartridge 3, the inner filter component 11 is arranged inside the filter cartridge 3, the pressure reducing component 18 is arranged inside the suction filtration cartridge 1, the accelerating type pressure flow mechanism 29 comprises a liquid pressure component 22 and a liquid guide component 26, the liquid pressure component 22 is arranged on the pressure reducing component 18, and the liquid guide component 26 is arranged outside the liquid pressure component 22.

[0034] The decompression assembly 18 includes a vacuum pump 19, a decompression cylinder 20, a decompression pipe 21 and a pressure liquid sleeve 23. Multiple groups of the vacuum pumps 19 are arranged on the side wall of the suction filter cylinder 1, the decompression cylinder 20 is arranged at the bottom of the suction filter cylinder 1, the decompression pipe 21 passes through the suction filter cylinder 1 and is connected between the power end of the vacuum pump 19 and the decompression cylinder 20, and the pressure liquid sleeve 23 passes through the middle connecting channel 2 and is connected above the decompression cylinder 20; the outer filter assembly 5 includes an annular outer filter screen 6, an outer filter cotton layer 7, an outer filter pipe 8, an outer filter electric valve 9, a liquid level sensor 10 and a liquid suction cylinder 13, the liquid suction cylinder 13 is arranged at the bottom of the filter cylinder 3, the liquid suction cylinder 13 is connected to the middle connecting channel 2, the liquid suction cylinder 13 is opened at the upper end, the annular outer filter screen 6 is arranged between the inner wall of the filter cylinder 3 and the side wall of the liquid suction cylinder 13, the outer filter cotton layer 7 is arranged between the annular outer filter screen 6 on the outside of the liquid suction cylinder 13 and the bottom of the filter cylinder 3, the The outer filter tube 8 passes through the middle connecting channel 2 and is connected between the suction filter cartridge 1 and the filter cartridge 3. Multiple groups of the outer filter electric valves 9 are connected to the side wall of the pressure liquid sleeve 23 below the middle connecting channel 2. The liquid level sensor 10 is located on the middle side wall of the liquid suction cylinder 13. The inner filter assembly 11 includes a cylindrical inner filter screen 12, a liquid suction groove 14, an annular inner filter cotton column 15, a telescopic tube 16 and a guide cotton layer 17. The cylindrical inner filter screen 12 is located on the liquid suction cylinder 13. On the upper wall of the outer annular outer filter screen 6, multiple groups of liquid suction grooves 14 are arranged on the side wall of the liquid suction cylinder 13, and the liquid suction grooves 14 are set through. The annular inner filter cotton column 15 is arranged inside the liquid suction cylinder 13, and the telescopic tube 16 is arranged on the inner wall of the annular inner filter cotton column 15. Multiple groups of the guide cotton layer 17 pass through the telescopic tube 16 and are arranged at the bottom of the annular inner filter cotton column 15. The end of the guide cotton layer 17 away from the annular inner filter cotton column 15 is in contact with the inner wall of the central connecting channel 2.

[0035] The pressure liquid component 22 includes a pressure liquid piston rod 24, a pressure liquid plate 25 and a return spring 30. The pressure liquid piston rod 24 passes through the telescopic tube 16 and is slidably arranged inside the pressure liquid sleeve 23. The pressure liquid plate 25 is arranged at one end of the top of the pressure liquid piston rod 24. The pressure liquid plate 25 is in contact with the upper wall of the annular inner filter cotton column 15. The return spring 30 is arranged between the upper wall of the pressure liquid plate 25 and the top of the filter cylinder 3. The normal state of the return spring 30 is a shortened setting; the liquid guiding component 26 includes a liquid collecting cylinder 27 and a one-way valve 28. The liquid collecting cylinder 27 is arranged on the inner wall of the bottom of the central connecting channel 2 outside the pressure liquid sleeve 23. The liquid collecting cylinder 27 is opened at the upper end, and multiple groups of one-way valves 28 are arranged on the bottom wall of the liquid collecting cylinder 27.

[0036] A controller 31 is provided on the side wall of the suction filter cartridge 1 .

[0037] The controller 31 is electrically connected to the external filter electric valve 9 , the liquid level sensor 10 and the vacuum pump 19 , respectively.

[0038] During specific use, in the initial state, the normal state of the return spring 30 is the shortened setting, and the medicinal liquid to be filtered is injected into the interior of the filter cartridge 3. After being filtered by the annular outer filter screen 6 and the outer filter cotton layer 7, the medicinal liquid flows into the interior of the suction filter cartridge 1 through the outer filter tube 8, and the annular inner filter cotton column 15 absorbs the medicinal liquid entering the interior of the filter cartridge 3. After the annular inner filter cotton column 15 is moistened, the humidity increases. When the medicinal liquid inside the annular inner filter cotton column 15 accumulates to a certain extent, due to the effect of gravity, the medicinal liquid will overcome the adsorption force of the annular inner filter cotton column 15 and drip from the pores of the annular inner filter cotton column 15 to form a drip flow. The medicinal liquid flows downward and enters the interior of the guide cotton layer 17. The guide cotton layer 17 transports the dripping medicinal liquid to the interior of the liquid collecting cylinder 27. The liquid collecting cylinder 27 transports the filtered medicinal liquid to the interior of the suction filter cartridge 1 through the one-way valve 28;

[0039] The controller 31 controls the outer filter electric valve 9 to open, and the outer filter electric valve 9 is turned on. The controller 31 controls the vacuum pump 19 to start, and the vacuum pump 19 extracts the air inside the decompression cylinder 20 through the decompression pipe 21. After the pressure of the decompression cylinder 20 is reduced, the air inside the filter cylinder 1 is extracted through the pressure sleeve 23 and the outer filter electric valve 9. After the pressure inside the filter cylinder 3 is reduced, the medicinal liquid inside the filter cylinder 3 is extracted through the outer filter pipe 8. The medicinal materials in the medicinal liquid are intercepted inside the filter cylinder 3 after being filtered by the annular outer filter screen 6 and the outer filter cotton layer 7, thereby accelerating the filtration speed of the medicinal liquid inside the filter cylinder 3;

[0040] The controller 31 controls the liquid level sensor 10 to start, and the liquid level sensor 10 monitors the liquid level of the liquid inside the filter cartridge 3 in real time. When the liquid level of the liquid inside the filter cartridge 3 drops to the position of the liquid level sensor 10, the controller 31 controls the outer filter electric valve 9 to close. The outer filter electric valve 9 no longer filters the liquid inside the filter cartridge 3. The liquid with a lower liquid level flows through the annular outer filter screen 6 and the outer filter cotton layer 7 by gravity to be filtered.

[0041] Under the shortened elastic tension of the return spring 30, the vacuum pump 19 will not pull the liquid pressure piston rod 24 when emptying the air inside the liquid pressure sleeve 23. When the external filter electric valve 9 is blocked, the pulling force on the liquid pressure piston rod 24 increases, and the liquid pressure piston rod 24 slides along the liquid pressure sleeve 23 using the deformation of the return spring 30 to drive the liquid pressure plate 25 to descend. The liquid pressure plate 25 descends to squeeze the annular inner filter cotton column 15, accelerating the dripping speed of the internal medicinal liquid under the action of gravity, and can squeeze out the medicinal liquid adsorbed inside the annular inner filter cotton column 15, thereby completing the filtration operation of the medicinal liquid while avoiding the medicinal materials in the medicinal liquid inside the filter cylinder 3 being filtered into a cake layer covering the surface of the filter screen; the above operation can be repeated when used next time.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] The above description of the present solution and its implementation methods is non-limiting. The drawings show only one implementation method of the present solution, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present solution, designs a similar structure and embodiment without creatively designing, they shall fall within the scope of protection of the present solution.

Claims

1. A suction filtration device for preparing oral liquid, comprising a suction filtration cartridge, a connecting channel, and a filter cartridge, characterized in that: and a tube connecting the discharging opening of the filter cartridge and the filter housing, the tube connecting the discharging opening being connected the the filter cartridge and the filter housing, the tube connecting the discharging opening being connected the the filter cartridge and the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, the filter housing, The upper end is opened, the annular outer filter is arranged between the inner wall of the filter cylinder and the side wall of the liquid suction cylinder, the outer filter tube passes through the middle connecting channel and is connected between the suction filter cylinder and the filter cylinder, multiple groups of the outer filter electric valves are connected to the side wall of the pressure liquid sleeve below the middle connecting channel, and the liquid level sensor is arranged on the middle side wall of the liquid suction cylinder; the inner filter assembly includes a cylindrical inner filter, a liquid suction groove, an annular inner filter cotton column, a telescopic tube and a guide cotton layer; the cylindrical inner filter is arranged on the outer annular ring outside the liquid suction cylinder On the upper wall of the filter screen, multiple groups of liquid suction grooves are arranged on the side wall of the liquid suction cylinder, the liquid suction grooves are set through, the annular inner filter cotton column is arranged inside the liquid suction cylinder, the telescopic tube is arranged on the inner wall of the annular inner filter cotton column, and multiple groups of the guide cotton layers pass through the telescopic tube and are arranged at the bottom of the annular inner filter cotton column, and one end of the guide cotton layer away from the annular inner filter cotton column is fitted with the inner wall of the central connecting channel; a controller is provided on the side wall of the suction cylinder; the controller is electrically connected to the external filter electric valve, the liquid level sensor and the vacuum pump respectively.

2. A suction filtration device for preparing oral liquid according to claim 1, characterized in that: The speed-increasing pressure flow mechanism includes a pressure liquid component and a liquid guiding component. The pressure liquid component is arranged on the pressure reducing component, and the liquid guiding component is arranged outside the pressure liquid component.

3. A suction filtration device for preparing oral liquid according to claim 2, characterized in that: The liquid pressure component includes a liquid pressure piston rod, a liquid pressure plate and a return spring. The liquid pressure piston rod passes through the telescopic tube and is slidably arranged inside the liquid pressure sleeve. The liquid pressure plate is arranged at one end of the top of the liquid pressure piston rod. The liquid pressure plate is in contact with the upper wall of the annular inner filter cotton column. The return spring is arranged between the upper wall of the liquid pressure plate and the top of the filter cylinder. The normal state of the return spring is a shortened setting.

4. The filtration device for preparing oral liquid according to claim 1, characterized in that: The outer filter component further comprises an outer filter cotton layer, which is arranged between the annular outer filter screen on the outer side of the liquid suction cylinder and the bottom of the filter cylinder.

5. The filtration device for preparing oral liquid according to claim 2, characterized in that: The liquid guiding assembly includes a liquid collecting cylinder and a one-way valve. The liquid collecting cylinder is arranged on the inner wall of the bottom of the connecting channel outside the pressure liquid sleeve. The liquid collecting cylinder is opened at the upper end, and multiple groups of one-way valves are arranged on the bottom wall of the liquid collecting cylinder.

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