Top cover of filter vat

Abstract

The top cover comprises a dome cover, an absorption opening and a negative pressure opening are formed in the upper side of the dome cover, a spiral edge is fixed to the lower side of the dome cover, a sealing ring groove is formed in the upper side of the spiral edge, a sealing gasket groove is formed in the outer side of the sealing ring groove, the sealing ring groove is located on an inclined annular face, and the sealing gasket groove is arranged right downwards. An elastic sealing ring is placed in through the sealing ring groove and the sealing gasket groove, the elastic sealing ring and the filter cartridge are sealed through pressure, a flange is arranged at the lower end of the absorption opening, a hose is connected to the flange in a sleeved mode, an open clamping ring is connected to the outer side of the hose in a clamped mode, and the end of the hose is fixed. And the air flow velocity is observed through the rotating speed of the turbine by filtering through the filter element, so that the negative pressure port is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure barrel top covers, in particular to a filter barrel top cover. Background Art

[0002] In places where a large amount of medical waste liquid needs to be collected, such as operating rooms, gastroscopy or oral cavity, negative pressure barrels are needed to centrally collect and treat the waste liquid.

[0003] A Chinese patent discloses a reusable negative pressure liquid collection barrel (authorization announcement number CN 219440179 U). This patent technology can recycle the barrel body after disinfection after each liquid collection, reducing resource waste and being more economical and practical. However, the negative pressure port is small, and the aerosol and blood aerosol formed are easily absorbed into the negative pressure device, causing pollution. Therefore, the utility model provides a filter barrel top cover to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a filter barrel top cover to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A filter barrel top cover comprises a dome cover, wherein an absorption port and a negative pressure port are arranged on the upper side of the dome cover, a spiral edge is fixed on the lower side of the dome cover, a sealing ring groove is arranged on the upper side of the spiral edge, a sealing gasket groove is arranged on the outer side of the sealing ring groove, a flange is arranged at the lower end of the absorption port, and a hose is sleeved on the flange;

[0007] An indication window is provided between the negative pressure port and the dome cover, a connecting port is provided at the negative pressure port, a rotating turbine is provided in the connecting port indication window, and the flow rate of the airflow is judged by the rotation of the turbine. The lower end of the negative pressure port is connected to the filter box, the filter box is inclined, a ventilation grid is provided at the lower end of the filter box, a filter element is placed in the filter box, and a sealing cover is provided on the upper side of the filter element.

[0008] Preferably, the sealing ring groove is located on the inclined annular surface, and the sealing gasket groove is arranged directly downward. An elastic sealing ring is placed through the sealing ring groove and the sealing gasket groove, and is sealed with the filter cartridge by pressure.

[0009] Preferably, an open clamping ring is clamped on the outer side of the hose to fix the end of the hose.

[0010] Preferably, the negative pressure port wall on the upper side of the turbine is conical, which reduces the ventilation cross section and increases the air flow velocity.

[0011] Preferably, the sealing cover is connected to the filter box via threads.

[0012] Preferably, the middle portion of the sealing cover is pressed against the upper side of the filter element by a rod to fix the filter element.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model performs double-layer sealing through two layers of sealing ring grooves and sealing gasket grooves, and has good sealing performance.

[0015] 2. The utility model filters through the filter element, and the speed of the turbine is used to observe the air flow rate to avoid blocking the negative pressure port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a structural schematic diagram of a filter barrel top cover.

[0017] Figure 2 The present invention is a structural schematic diagram of a filter barrel top cover.

[0018] Figure 3 The present invention is a structural schematic diagram of a filter barrel top cover.

[0019] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0020] In the figure: 1, dome cover; 2, spiral edge; 3, sealing ring groove; 4, sealing gasket groove; 5, absorption port; 6, negative pressure port; 7, hose; 8, clamping ring; 9, filter box; 10, filter element;

[0021] 11. Cover; 12. Indicator window; 13. Turbine; 14. Connection port. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4In the embodiment of the utility model, a filter barrel top cover comprises a dome cover 1, an absorption port 5 and a negative pressure port 6 are arranged on the upper side of the dome cover 1, a spiral edge 2 is fixed to the lower side of the dome cover 1, a sealing ring groove 3 is arranged on the upper side of the spiral edge 2, a sealing gasket groove 4 is arranged on the outer side of the sealing ring groove 3, the sealing ring groove 3 is located on the inclined annular surface, the sealing gasket groove 4 is arranged directly downward, an elastic sealing ring is placed through the sealing ring groove 3 and the sealing gasket groove 4, and the filter barrel is sealed by pressure, a flange is arranged at the lower end of the absorption port 5, a hose 7 is sleeved on the flange, and an open clamping ring 8 is clamped on the outer side of the hose 7 to fix the end of the hose 7;

[0024] An indication window 12 is provided between the negative pressure port 6 and the dome cover 1, a connecting port 14 is provided at the negative pressure port 6, a rotating turbine 13 is provided in the indicating window 12 of the connecting port 14, the flow rate of the airflow is judged by the rotation of the turbine 13, the negative pressure port wall on the upper side of the turbine 13 is conical, which reduces the ventilation cross-section and increases the airflow rate, the lower end of the negative pressure port 6 is connected to the filter box 9, the filter box 9 is inclined, a ventilation grid is provided at the lower end of the filter box 9, a filter element 10 is placed in the filter box 9, a sealing cover 11 is provided on the upper side of the filter element 10, the sealing cover 11 is connected to the filter box 9 by threads, and the middle part of the sealing cover 11 is pressed on the upper side of the filter element 10 by a rod to fix the filter element 10.

[0025] The working principle of the utility model is: when in use, the filter is connected through the threaded connection on the outer side of the spiral along 2, and after rotation, double-layer sealing is performed through the two-layer sealing ring groove 3 and the sealing gasket groove 4, the absorption port 5 collects the debris into the filter barrel through the hose 7, and the suction device is connected through the connecting port 14, and the negative pressure port 6 draws air to maintain the internal negative pressure. After the airflow is filtered by the filter element 10, it is discharged from the negative pressure port 6 through the turbine 13 in sequence.

[0026] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A filter barrel top cover, comprising a dome cover (1), wherein an absorption port (5) and a negative pressure port (6) are provided on the upper side of the dome cover (1), characterized in that: A spiral edge (2) is fixed on the lower side of the dome cover (1), a sealing ring groove (3) is provided on the upper side of the spiral edge (2), a sealing gasket groove (4) is provided on the outer side of the sealing ring groove (3), and a flange is provided at the lower end of the absorption port (5), and a hose (7) is sleeved on the flange; An indication window (12) is provided between the negative pressure port (6) and the dome cover (1), a connection port (14) is provided at the negative pressure port (6), a rotating turbine (13) is provided in the indication window (12) of the connection port (14), the lower end of the negative pressure port (6) is connected to a filter box (9), the filter box (9) is arranged tilted, a ventilation grid is provided at the lower end of the filter box (9), a filter element (10) is placed in the filter box (9), and a sealing cover (11) is provided on the upper side of the filter element (10).

2. A filter barrel top cover according to claim 1, characterized in that: The sealing ring groove (3) is located on the inclined annular surface, and the sealing pad groove (4) is arranged directly downward.

3. The filter barrel top cover according to claim 1, characterized in that: The outer side of the hose (7) is clamped with an open clamping ring (8).

4. The filter barrel top cover according to claim 1, characterized in that: The negative pressure port wall on the upper side of the turbine (13) is conical.

5. The filter barrel top cover according to claim 1, characterized in that: The sealing cover (11) is connected to the filter box (9) via threads.

6. A filter barrel top cover according to claim 5, characterized in that: The middle part of the sealing cover (11) is pressed against the upper side of the filter element (10) through a rod.

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