Disposable collecting tank for negative pressure suction pump

Abstract

The utility model discloses a disposable collecting tank for a negative pressure suction pump, which belongs to the technical field of collecting tanks and comprises a tank body and a cover body which are in threaded connection with each other, the inner wall of the cover body is rotatably connected with a flow guide hopper, and a group of fan blades distributed in a circumferential array are fixedly mounted on the peripheral side surface of the flow guide hopper. A pump shell and a one-way liquid inlet valve are fixedly installed at the positions, corresponding to the inner side of the flow guide hopper, in the cover body, the circumferential side face of the pump shell is fixedly communicated with a negative pressure connector, a pump body assembly driven by the negative pressure connector is installed in the pump shell, the bottom end of the flow guide hopper is fixedly communicated with a rotary filter cylinder, and the rotary filter cylinder is driven by the pump body assembly. When the collecting tank works, on one hand, drained accumulated liquid can be subjected to double sealing through the cover body and the sealing valve plate, on the other hand, positive pressure inhibition can be carried out on peculiar smell generated by the accumulated liquid through downward air outlet arrangement of the fan blades, and then the peculiar smell overflow rate of the collecting tank after the drainage liquid is collected is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of collecting tanks, and in particular relates to a disposable collecting tank for a negative pressure extraction pump. Background Art

[0002] A negative pressure drain is a negative pressure drainage wound protector, which is used for negative pressure drainage operations on various skin and soft tissue wounds.

[0003] In the prior art, the patent document with publication number CN219662406U discloses a disposable negative pressure drainer, which filters out tissues in the drainage fluid by setting a filtering mechanism, thereby avoiding clogging of the drainage tube and being able to more accurately measure the amount of drainage fluid. However, the above-mentioned negative pressure drainer or drainage collection tank has the following technical problems when in use:

[0004] 1. When the accumulated liquid is collected and stored, the odor generated by the stored accumulated liquid cannot be suppressed by positive pressure or double sealing;

[0005] 2. When the effusion is collected and stored, it is impossible to detect whether the drainage device is leaking;

[0006] 3. When filtering and collecting the accumulated liquid, the filtering mechanism is a static structure and is very easy to be blocked, thereby reducing the drainage efficiency;

[0007] Based on this, the utility model provides a disposable collecting tank for a negative pressure extraction pump to solve the problems raised in the above background technology. Utility Model Content

[0008] (1) Technical issues to be solved

[0009] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a disposable collecting tank for a negative pressure suction pump, aiming to solve the technical problems that when the existing collecting tank is in operation, on the one hand, it cannot suppress the odor generated by the stored accumulated liquid by positive pressure or double seal, and on the other hand, it cannot detect whether the drain device is leaking. At the same time, the filtering mechanism of the existing collecting tank is a static structure and is very easy to be clogged, thereby reducing the drainage efficiency.

[0010] (2) Technical solution

[0011] In order to solve the above technical problems, the utility model provides a disposable collecting tank for a negative pressure suction pump, comprising a tank body and a cover body threadedly connected to each other, the inner wall of the cover body is rotatably connected with a guide bucket, and a group of fan blades distributed in a circular array are fixedly installed on the circumferential side surface of the guide bucket, and a pump casing and a one-way liquid inlet valve are fixedly installed inside the cover body and at positions corresponding to the inner side of the guide bucket, the circumferential side surface of the pump casing is fixedly connected with a negative pressure joint, and a pump body assembly driven by the negative pressure joint is installed inside the pump casing, the bottom end of the guide bucket is fixedly connected with a rotary filter cartridge, and the rotary filter cartridge is driven by the pump body assembly, the circumferential side surface of the rotary filter cartridge is rotatably connected with a liquid collecting cartridge, and the bottom end of the liquid collecting cartridge is fixedly installed with a drainage conduit, and the circumferential side surface of the drainage conduit is slidably connected with a sealing valve plate, the circumferential side surface of the sealing valve plate is slidably connected to the tank body, and a leakage detection assembly is fixedly installed between the relative surfaces of the sealing valve plate and the liquid collecting cartridge.

[0012] Preferably, a scale is fixedly provided on the peripheral side surface of the tank body, and a sewage valve is fixedly installed on the bottom end of the tank body.

[0013] Furthermore, the pump body assembly includes a pump casing fixed to the axial position of the cover body, the inner wall of the pump casing is rotatably connected to the pump shaft, a group of pump blades distributed in a circular array and fitted to the pump casing are installed on the circumferential side surface of the pump shaft and corresponding to the position on the inner side of the pump casing, a negative pressure hole is fixedly opened inside the pump casing and corresponding to the position on the inner side of the guide bucket, and a three-claw connecting frame is fixedly installed between the relative surfaces of the pump shaft and the guide bucket.

[0014] Furthermore, a sealing ring that fits the tank body is fixedly installed on the peripheral side surface of the sealing valve plate, the bottom end of the drainage conduit is open, and a limiting ring is fixedly installed on the bottom end of the drainage conduit.

[0015] Furthermore, the liquid leakage detection component includes a corrugated rubber cylinder fixed between the liquid collecting cylinder and the sealing valve plate, the corrugated rubber cylinder is fixedly provided with a feedback air cavity inside the corrugated rubber cylinder, the circumferential side surfaces of the feedback air cavity are respectively fixedly connected with a one-way air outlet pipe and a one-way air inlet pipe, the end of the one-way air outlet pipe extends to the outside of the cover body, the one-way air outlet valve is fixedly installed inside the one-way air outlet pipe, the one-way air inlet valve is fixedly installed inside the one-way air inlet pipe, the air inlet end of the one-way air inlet pipe is installed with a standard cylinder, the inner wall of the standard cylinder is slidably connected with a piston mark seat, the interior of the standard cylinder and the positions on both sides of the piston mark seat are respectively provided with a pressure balance chamber and a negative pressure chamber, the surface of the negative pressure chamber is connected with the one-way air inlet pipe, the interior of the standard cylinder is fixedly provided with a balance hole connected with the pressure balance chamber, and the surface of the standard cylinder is fixedly provided with a leakage scale matching the piston mark seat.

[0016] Furthermore, the tank body and the mark tube are both made of transparent materials, and the axis of the mark tube is perpendicular to the axis of the tank body.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. When the utility model is working, on the one hand, the drained accumulated liquid can be doubly sealed by the cover body and the sealing valve plate, and on the other hand, the downward air outlet setting of the fan blades can suppress the odor generated by the accumulated liquid by positive pressure, thereby effectively reducing the odor overflow rate of the collection tank after the drainage liquid is collected.

[0020] 2. When the utility model is working, it can monitor whether the collection tank is leaking or not. When in use, as the accumulated liquid is gradually drained, the sealing valve plate floats up under the action of gravity. When the sealing valve plate floats up, the gas inside the feedback air cavity is discharged in one direction through the one-way air outlet pipe, and the piston seat is not subjected to force. When the accumulated liquid in the tank body leaks, the sealing valve plate moves downward, the feedback air cavity sucks air from the negative pressure cavity, and the piston seat is subjected to force and moves to the position of the leakage scale, thereby indicating whether the tank body is leaking or not.

[0021] 3. When the negative pressure pump in the utility model is working, the pump shaft is driven, and the external dirty liquid finally enters the tank body through the guide bucket, the rotary filter cylinder, the liquid collecting cylinder and the discharge conduit under the action of negative pressure, and when the pump shaft rotates, the rotary filter cylinder is driven to perform the rotary filtration operation, and the rotary filtration effect is achieved, thereby effectively reducing the blockage rate of the rotary filter cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a disposable collecting tank for a negative pressure extraction pump of the utility model;

[0023] Figure 2 For this utility model Figure 1 A schematic diagram of the cross-sectional structure of;

[0024] Figure 3 For this utility model Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0025] Figure 4 For this utility model Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 5 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point C in the middle.

[0027] The markings in the attached drawings are: 1. tank body; 2. cover body; 3. guide bucket; 4. fan blade; 5. pump casing; 6. one-way liquid inlet valve; 7. negative pressure joint; 8. spin filter cartridge; 9. liquid collecting cylinder; 10. discharge duct; 11. sealing valve plate; 12. drain valve; 13. pump shaft; 14. pump blade; 15. negative pressure hole; 16. corrugated rubber cylinder; 17. one-way air outlet pipe; 18. one-way air inlet pipe; 19. mark cylinder; 20. piston mark seat; 21. balance hole; 22. feedback air cavity. DETAILED DESCRIPTION

[0028] See also Figure 1 - Figure 5 The specific embodiment is a disposable collection tank for a negative pressure suction pump, comprising a tank body 1 and a cover body 2 which are threadedly connected to each other, a scale is fixedly provided on the peripheral side of the tank body 1, and a drain valve 12 is fixedly installed at the bottom end of the tank body 1;

[0029] The inner wall of the cover body 2 is rotatably connected with a flow guide hopper 3, and a group of fan blades 4 distributed in a circumferential array are fixedly installed on the peripheral side of the flow guide hopper 3. A pump housing 5 and a one-way liquid inlet valve 6 are fixedly installed inside the cover body 2 and at positions corresponding to the inner side of the flow guide hopper 3. The peripheral side of the pump housing 5 is fixedly connected with a negative pressure joint 7, and a pump body assembly driven by the negative pressure joint 7 is installed inside the pump housing 5. The bottom end of the flow guide hopper 3 is fixedly connected with a rotary filter cartridge 8, and the rotary filter cartridge 8 is driven by the pump body assembly;

[0030] The pump body assembly includes a pump housing 5 fixed to the axial position of the cover body 2, the inner wall of the pump housing 5 is rotatably connected to the pump shaft 13, a group of pump blades 14 distributed in a circumferential array and fitted to the pump housing 5 are installed on the circumferential side surface of the pump shaft 13 and at a position corresponding to the inner side of the pump housing 5, a negative pressure hole 15 is fixedly opened inside the pump housing 5 and at a position corresponding to the inner side of the guide bucket 3, and a three-claw connecting frame is fixedly installed between the opposite surfaces of the pump shaft 13 and the guide bucket 3;

[0031] When the negative pressure connector 7 is connected to the external negative pressure pump, negative pressure is generated inside the pump housing 5, and the airflow is discharged through the negative pressure hole 15 and the pump blades 14, and then the pump blades 14 act to drive the pump shaft 13 to rotate, and then the pump shaft 13 rotates, and then drives the filter cartridge 8 to perform filtering operations;

[0032] The peripheral side of the rotary filter cylinder 8 is rotatably connected to a liquid collecting cylinder 9, a liquid discharge conduit 10 is fixedly installed at the bottom end of the liquid collecting cylinder 9, a sealing valve plate 11 is slidably connected to the peripheral side of the liquid discharge conduit 10, the peripheral side of the sealing valve plate 11 is slidably connected to the tank body 1, and a sealing ring that fits the tank body 1 is fixedly installed on the peripheral side of the sealing valve plate 11;

[0033] A liquid leakage detection assembly is fixedly installed between the sealing valve plate 11 and the opposite surface of the liquid collecting cylinder 9 .

[0034] The bottom end of the drainage conduit 10 is open, and a limiting ring is fixedly installed on the bottom end of the drainage conduit 10 .

[0035] The liquid leakage detection assembly includes a corrugated rubber cylinder 16 fixed between the liquid collecting cylinder 9 and the sealing valve plate 11, and a feedback air cavity 22 is fixedly arranged inside the corrugated rubber cylinder 16. The peripheral side surfaces of the feedback air cavity 22 are respectively fixedly connected with a one-way air outlet pipe 17 and a one-way air inlet pipe 18, and the end of the one-way air outlet pipe 17 extends to the outside of the cover body 2;

[0036] A one-way air outlet valve is fixedly installed inside the one-way air outlet pipe 17;

[0037] By setting the one-way air outlet valve, it is ensured that the gas inside the feedback air cavity 22 can only be discharged outward in one direction through the one-way air outlet valve;

[0038] A one-way air inlet valve is fixedly installed inside the one-way air inlet pipe 18, a gauge cylinder 19 is installed at the air inlet end of the one-way air inlet pipe 18, a piston gauge seat 20 is slidably connected to the inner wall of the gauge cylinder 19, a pressure balance chamber and a negative pressure chamber are respectively arranged inside the gauge cylinder 19 and at positions corresponding to both sides of the piston gauge seat 20, the surface of the negative pressure chamber is connected to the one-way air inlet pipe 18, a balance hole 21 connected to the pressure balance chamber is fixedly opened inside the gauge cylinder 19, and a liquid leakage scale matched with the piston gauge seat 20 is fixedly arranged on the surface of the gauge cylinder 19;

[0039] By setting the one-way air inlet valve and the negative pressure chamber, it is ensured that the gas inside the negative pressure chamber can only flow into the feedback air chamber 22 in one direction, and then the piston seat 20 is driven to move by the negative pressure;

[0040] By providing the pressure balance hole 21, the piston seat 20 can be kept on the right side of the leakage scale under normal pressure.

[0041] The tank body 1 and the mark cylinder 19 are both made of transparent materials. The axis of the mark cylinder 19 is perpendicular to the axis of the tank body 1 . The interior of the spin filter cylinder 8 is provided with a plurality of regularly distributed filtrate holes, and the axis of the filtrate holes is perpendicular to the axis of the spin filter cylinder 8 .

[0042] When in use, the tank body 1 and the cover body 2 are as Figure 1The connection is integrated as shown. When the collection tank needs to be used, the one-way liquid inlet valve 6 is connected to the external sewage liquid delivery pipeline, the negative pressure joint 7 is connected to the external negative pressure pump, and the sealing valve plate 11 is fitted with the limit ring under the action of gravity. When the negative pressure pump is working, the pump shaft 13 is driven, and the external sewage enters the tank body 1 through the guide bucket 3, the spin filter cylinder 8, the liquid collecting cylinder 9 and the drainage conduit 10 under the action of negative pressure. With the gradual drainage of the accumulated liquid, the sealing valve plate 11 floats up under the action of gravity. When the sealing valve plate 11 floats up, the gas inside the feedback air cavity 22 is fed back through the one-way The air outlet pipe 17 discharges in one direction, and the piston seat 20 is not subjected to force. When the accumulated liquid in the tank body 1 leaks, the sealing valve plate 11 moves downward, and the feedback air cavity 22 sucks air from the negative pressure cavity. The piston seat 20 is subjected to force and moves to the position of the leakage scale, thereby indicating whether the tank body 1 is leaking or not. At the same time, the double sealing structure of the sealing valve plate 11 and the cover body 2 can effectively reduce the overflow rate of the odor in the accumulated liquid, and when the guide bucket 3 rotates, the fan blade 23 is driven and the air outlet direction is opposite to the sealing valve plate 11, thereby further suppressing the overflow rate of the odor in the accumulated liquid through positive pressure.

[0043] All technical features in this embodiment can be freely combined according to actual needs.

[0044] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A disposable collecting tank for a negative pressure suction pump, comprising a tank body (1) and a cover body (2) threadedly connected to each other, characterized in that: The inner wall of the cover body (2) is rotatably connected to a flow guide hopper (3); a group of fan blades (4) distributed in a circumferential array are fixedly installed on the peripheral side of the flow guide hopper (3); a pump housing (5) and a one-way liquid inlet valve (6) are fixedly installed inside the cover body (2) and at positions corresponding to the inner side of the flow guide hopper (3); the peripheral side of the pump housing (5) is fixedly connected to a negative pressure joint (7); a pump body assembly driven by the negative pressure joint (7) is installed inside the pump housing (5); and the bottom end of the flow guide hopper (3) is fixedly connected to the negative pressure joint (7). A rotary filter cartridge (8) is fixedly connected, the rotary filter cartridge (8) is driven by a pump body assembly, the peripheral side surface of the rotary filter cartridge (8) is rotatably connected to a liquid collecting cartridge (9), a liquid discharge conduit (10) is fixedly installed at the bottom end of the liquid collecting cartridge (9), the peripheral side surface of the liquid discharge conduit (10) is slidably connected to a sealing valve plate (11), the peripheral side surface of the sealing valve plate (11) is slidably connected to the tank body (1), and a liquid leakage detection assembly is fixedly installed between the relative surfaces of the sealing valve plate (11) and the liquid collecting cartridge (9).

2. A disposable collecting tank for a negative pressure suction pump according to claim 1, characterized in that: The peripheral side surface of the tank body (1) is fixedly provided with scales, and the bottom end of the tank body (1) is fixedly installed with a sewage valve (12).

3. A disposable collecting tank for a negative pressure suction pump according to claim 2, characterized in that: The pump body assembly comprises a pump housing (5) fixed at the axial position of the cover body (2); the inner wall of the pump housing (5) is rotatably connected to a pump shaft (13); a group of pump blades (14) distributed in a circumferential array and fitted to the pump housing (5) are installed on the circumferential side surface of the pump shaft (13) and at a position corresponding to the inner side of the pump housing (5); a negative pressure hole (15) is fixedly provided inside the pump housing (5) and at a position corresponding to the inner side of the guide bucket (3); and a three-claw connecting frame is fixedly installed between the opposing surfaces of the pump shaft (13) and the guide bucket (3).

4. A disposable collecting tank for a negative pressure suction pump according to claim 3, characterized in that: A sealing ring that fits the tank body (1) is fixedly mounted on the peripheral side surface of the sealing valve plate (11); the bottom end of the liquid discharge conduit (10) is open; and a limiting ring is fixedly mounted on the bottom end of the liquid discharge conduit (10).

5. A disposable collecting tank for a negative pressure suction pump according to claim 4, characterized in that: The liquid leakage detection assembly comprises a corrugated rubber cylinder (16) fixed between the liquid collecting cylinder (9) and the sealing valve plate (11), a feedback air cavity (22) being fixedly arranged inside the corrugated rubber cylinder (16), a one-way air outlet pipe (17) and a one-way air inlet pipe (18) being fixedly connected to the peripheral side surfaces of the feedback air cavity (22), an end of the one-way air outlet pipe (17) extending to the outside of the cover body (2), a one-way air outlet valve being fixedly installed inside the one-way air outlet pipe (17), and a one-way air inlet pipe (18) being fixedly installed inside the one-way air inlet pipe (18). An air valve, wherein a gauge cylinder (19) is installed at the air inlet end of the one-way air inlet pipe (18), the inner wall of the gauge cylinder (19) is slidably connected to a piston gauge seat (20), a pressure balance chamber and a negative pressure chamber are respectively arranged inside the gauge cylinder (19) and at positions corresponding to both sides of the piston gauge seat (20), the surface of the negative pressure chamber is connected to the one-way air inlet pipe (18), a balance hole (21) connected to the pressure balance chamber is fixedly opened inside the gauge cylinder (19), and a liquid leakage scale matched with the piston gauge seat (20) is fixedly arranged on the surface of the gauge cylinder (19).

6. A disposable collecting tank for a negative pressure suction pump according to claim 5, characterized in that: The tank body (1) and the marking tube (19) are both made of transparent materials, and the axis of the marking tube (19) is perpendicular to the axis of the tank body (1).

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