Negative pressure suction device

Abstract

The utility model relates to the field of medical instruments, and discloses a negative pressure suction device which comprises a lower cover body, the lower cover body is detachably arranged on the top face of a container, a filter layer is detachably arranged on the top face of the lower cover body, an upper cover body is detachably arranged on the top face of the filter layer, a connecting pipe is arranged on the top face of the upper cover body, and the connecting pipe is connected with the upper cover body. A connecting hole is formed in the right side of the lower cover body, a first through hole is formed in the top surface of the lower cover body, a plurality of cavities are formed in the top surface of the filter layer, second through holes are formed in the inner bottom surfaces of the cavities respectively, a main index is fixed to the left side of the outer wall of the lower cover body, and a plurality of secondary indexes are fixed to the outer wall of the filter layer. According to the utility model, the second through hole in the other cavity can be quickly positioned through the primary index and the secondary index when the filter material is replaced, so that the second through hole is accurately butted with the first through hole, the quick replacement is realized, and the working efficiency and the operation convenience are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, specifically a negative pressure suction device. Background Technology

[0002] A negative pressure suction device is a tool that uses a vacuum pump to create a negative pressure state at its suction head, forcing substances outside the suction head towards it, thus achieving the "suction" effect. It is used to guide blood, pus, sputum, and other bodily fluids from a patient into a container for storage. Since the patient's waste fluid may contain contaminants for infectious diseases, a filter is installed at the connection between the container and the vacuum pump to prevent these contaminants from being released into the environment. The filter removes the contaminants.

[0003] According to Chinese Patent No. CN213312197U, a negative pressure suction device includes: a container; a filter, the filter including: a lower cover, an upper cover, a filter layer, the bottom surface of the filter layer sealingly abutting the top surface of the lower cover, the top surface of the filter layer sealingly abutting the bottom surface of the upper cover, the filter layer being rotatably disposed between the lower cover and the upper cover, the filter layer including a cavity, the bottom of the cavity being connected to the top port of a connecting pipe, the top of the cavity being connected to the bottom port of a first through hole, there being multiple cavities, all cavities being arranged sequentially around the rotation axis of the filter layer, each two adjacent cavities being separated from each other; a filter material disposed within the cavity; and a vacuum pump connected to the top port of the first through hole.

[0004] In the above scheme, by rotating the filter layer in the filter, another cavity in the filter layer is connected to the connecting pipe and the first through hole respectively, so that the filter material in the other cavity filters the gas. This results in the following disadvantage: when the device is in use, it is difficult to quickly and accurately connect the through hole in the cavity with the connecting pipe, which makes the operation process difficult and complicated. Utility Model Content

[0005] The purpose of this invention is to provide a negative pressure suction device to solve the problem that the through hole in the cavity is difficult to quickly and accurately connect with the connecting pipe during use, resulting in a difficult and complicated operation process.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a negative pressure suction device, comprising a lower cover, the lower cover being detachably disposed on the top surface of a container, a filter layer being detachably disposed on the top surface of the lower cover, an upper cover being detachably disposed on the top surface of the filter layer, a connecting pipe being provided on the top surface of the upper cover, a connecting hole being provided on the right side of the lower cover, an inlet pipe being fixed inside the connecting hole, a first through hole being provided on the top surface of the lower cover, a plurality of cavities being provided on the top surface of the filter layer, a second through hole being provided on the bottom surface of the interior of each of the plurality of cavities, a main indicator being fixed on the left side of the outer wall of the lower cover, and a plurality of secondary indicators being fixed on the outer wall of the filter layer.

[0007] Preferably, the top surfaces of the lower cover and the filter layer are respectively provided with a plurality of snap-fit ​​holes, and the bottom surfaces of the filter layer and the upper cover are respectively fixed with a plurality of snap-fit ​​blocks, and the plurality of snap-fit ​​blocks are respectively detachably snapped into the plurality of snap-fit ​​holes.

[0008] Preferably, the top surfaces of the lower cover and the filter layer are respectively provided with receiving grooves, and the bottom surfaces of the filter layer and the upper cover are respectively fixed with sealing rings.

[0009] Preferably, an overflow prevention pipe is fixed inside the first through hole, the inner wall of the overflow prevention pipe is provided with an inclined groove, and a float is provided inside the overflow prevention pipe.

[0010] Preferably, an observation port is provided on the front side of the outer wall of the container, and a transparent tempered glass is fixed inside the observation port.

[0011] Preferably, a scale is provided on the front side of the outer wall of the container.

[0012] Compared with existing technologies, a negative pressure suction device employing the above-mentioned technical solution has the following beneficial effects:

[0013] First, during use, the primary and secondary indicators enable quick positioning of the second through hole in another cavity when replacing filter material, ensuring accurate alignment between the second and first through holes for rapid replacement, thus improving work efficiency and ease of operation.

[0014] Second, during use, the design of the snap-fit ​​holes and snap-fit ​​blocks allows for quick installation of the lower cover, filter layer, and upper cover. Operators simply align the snap-fit ​​blocks with the snap-fit ​​holes and press them down for rapid assembly and disassembly. This design not only simplifies the installation process but also improves the stability and reliability of the equipment. The combination of the receiving groove and sealing ring ensures a tight seal between the filter layer and the upper cover, as well as between the lower cover and the filter layer. The sealing ring is compressed within the receiving groove, forming an effective barrier to prevent gas or liquid leakage.

[0015] Thirdly, during use, when the liquid inside the container reaches a certain height, the liquid will enter the overflow prevention pipe. The float rises with the liquid level, and when the top of the float abuts against the inclined groove, a sealing effect is formed, preventing liquid from continuing to flow into the filter layer and vacuum pump, effectively preventing damage to the vacuum pump. Through the observation port and transparent tempered glass, operators can directly observe the liquid level and filtration status inside the container, enabling them to promptly detect and handle abnormalities, ensuring the normal operation of the equipment. The scale provides operators with an accurate tool for measuring liquid level. By reading the values ​​on the scale, operators can accurately understand the amount of liquid inside the container, thus making correct operational decisions. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 This is an exploded diagram of an embodiment.

[0018] Figure 3 This is a cross-sectional view of the filter layer and float in the embodiment.

[0019] Figure 4 For the example Figure 2 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Lower cover; 2. Container; 3. Filter layer; 4. Upper cover; 5. Connecting pipe; 6. Connecting hole; 7. Inlet pipe; 8. First through hole; 9. Cavity; 10. Second through hole; 11. Main indicator; 12. Secondary indicator; 13. Snap-fit ​​hole; 14. Snap-fit ​​block; 15. Receiving groove; 16. Sealing ring; 17. Overflow prevention pipe; 18. Float; 19. Observation port; 20. Transparent tempered glass; 21. Ruler. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, a negative pressure suction device includes a lower cover 1, which is detachably mounted on the top surface of a container 2. A filter layer 3 is detachably mounted on the top surface of the lower cover 1, and an upper cover 4 is detachably mounted on the top surface of the filter layer 3. A connecting pipe 5 is provided on the top surface of the upper cover 4. A connecting hole 6 is provided on the right side of the lower cover 1, and an inlet pipe 7 is fixed inside the connecting hole 6. A first through hole 8 is provided on the top surface of the lower cover 1. Several cavities 9 are provided on the top surface of the filter layer 3, and second through holes 10 are provided on the bottom surface of the interior of each of the several cavities 9. A main indicator 11 is fixed on the left side of the outer wall of the lower cover 1, and several secondary indicators 12 are fixed on the outer wall of the filter layer 3.

[0023] In use, the operator first connects the top port of the connecting pipe 5 of the upper cover 4 to the vacuum pump. When the negative pressure suction device is working, the vacuum pump creates a negative pressure inside the container 2, and the external suction material enters the container 2 through the inlet pipe 7. Among them, the gas enters the lower cover 1, filter layer 3, and upper cover 4 at the top of the container 2. The filter material in the cavity 9 filters the gas, and the filtered gas enters the vacuum pump. When it is necessary to replace the filter material inside the filter layer 3, the filter layer 3 is removed and rotated 90 degrees so that the bottom end of the secondary index 12 corresponds to the top end of the primary index 11. Then the filter layer 3 is installed so that the second through hole 10 is connected to the first through hole 8, thereby allowing the filter material in the other cavity 9 to filter the gas. That is, when replacing the filter material, the second through hole 10 in the other cavity 9 can be quickly located, so that the second through hole 10 is accurately connected to the first through hole 8, realizing quick replacement, improving work efficiency and ease of operation.

[0024] like Figures 1-4 As shown, the top surfaces of the lower cover 1 and the filter layer 3 are respectively provided with several snap-fit ​​holes 13, and the bottom surfaces of the filter layer 3 and the upper cover 4 are respectively fixed with several snap-fit ​​blocks 14. The several snap-fit ​​blocks 14 are respectively detachably snapped into the several snap-fit ​​holes 13.

[0025] In use, the design of the snap-fit ​​hole 13 and the snap-fit ​​block 14 allows for quick installation of the lower cover 1, filter layer 3, and upper cover 4. The operator only needs to align the snap-fit ​​block 14 with the snap-fit ​​hole 13 and press it to achieve quick disassembly and assembly. This design not only simplifies the installation process but also improves the stability and reliability of the equipment.

[0026] like Figures 1-4 As shown, the top surfaces of the lower cover 1 and the filter layer 3 are respectively provided with receiving grooves 15, the bottom surfaces of the filter layer 3 and the upper cover 4 are respectively fixed with sealing rings 16, the inside of the first through hole 8 is fixed with an overflow prevention pipe 17, the inner wall of the overflow prevention pipe 17 is provided with an inclined groove, and the inside of the overflow prevention pipe 17 is provided with a float 18.

[0027] During use, the combined design of the receiving groove 15 and the sealing ring 16 ensures a tight seal between the filter layer 3 and the upper cover 4, and between the lower cover 1 and the filter layer 3. The sealing ring 16 is compressed within the receiving groove 15, forming an effective barrier to prevent gas or liquid leakage. When the liquid inside the container 2 reaches a certain height, the liquid enters the overflow prevention pipe 17, and the float 18 rises with the liquid level. When the top of the float 18 abuts against the inclined groove, a sealing effect is formed, preventing liquid from continuing to flow into the filter layer 3 and the vacuum pump, effectively preventing damage to the vacuum pump from the liquid.

[0028] like Figure 1 and Figure 2As shown, an observation port 19 is provided on the front side of the outer wall of container 2, and a transparent tempered glass 20 is fixed inside the observation port 19. A scale 21 is provided on the front side of the outer wall of container 2.

[0029] During use, through the observation port 19 and the transparent tempered glass 20, operators can directly observe the liquid level and filtration status inside container 2, enabling them to promptly detect and handle any abnormalities and ensure the normal operation of the equipment. The scale 21 provides operators with an accurate tool for measuring liquid level. By reading the values ​​on the scale 21, operators can precisely understand the liquid volume inside container 2, thereby making correct operational decisions.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A negative pressure suction device, comprising a lower cover (1), said lower cover (1) being detachably disposed on the top surface of a container (2), characterized in that, The top surface of the lower cover (1) is detachably provided with a filter layer (3), the top surface of the filter layer (3) is detachably provided with an upper cover (4), the top surface of the upper cover (4) is provided with a connecting pipe (5), the right side of the lower cover (1) is provided with a connecting hole (6), the inside of the connecting hole (6) is fixed with an inlet pipe (7), the top surface of the lower cover (1) is provided with a first through hole (8), the top surface of the filter layer (3) is provided with several cavities (9), the bottom surface of the several cavities (9) is provided with a second through hole (10), the left side of the outer wall of the lower cover (1) is fixed with a main indicator (11), and the outer wall of the filter layer (3) is fixed with several secondary indicators (12). The top surfaces of the lower cover (1) and the filter layer (3) are respectively provided with a number of snap-fit ​​holes (13), and the bottom surfaces of the filter layer (3) and the upper cover (4) are respectively fixed with a number of snap-fit ​​blocks (14), and the number of snap-fit ​​blocks (14) are respectively detachably snapped into the number of snap-fit ​​holes (13).

2. The negative pressure suction device according to claim 1, characterized in that: The top surfaces of the lower cover (1) and the filter layer (3) are respectively provided with receiving grooves (15), and the bottom surfaces of the filter layer (3) and the upper cover (4) are respectively fixed with sealing rings (16).

3. The negative pressure suction device according to claim 2, characterized in that: An overflow prevention pipe (17) is fixed inside the first through hole (8). An inclined groove is provided on the inner wall of the overflow prevention pipe (17), and a float (18) is provided inside the overflow prevention pipe (17).

4. The negative pressure suction device according to claim 1, characterized in that: An observation port (19) is provided on the front side of the outer wall of the container (2), and a transparent tempered glass (20) is fixed inside the observation port (19).

5. A negative pressure suction device according to claim 4, characterized in that: A scale (21) is provided on the front side of the outer wall of the container (2).

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