Laboratory purifying and filtering device

Abstract

The utility model provides a laboratory purification filtration device, including filter box subassembly, install the filter element subassembly in the filter box subassembly and install the filter screen in the filter element subassembly, the filter box subassembly includes box body, install air inlet cover and air outlet cover at the both ends of box body, the both ends of box body are both equipped with the convex sealing rib, the filter element subassembly is equipped with the filter screen in the filter element subassembly. The air inlet cover and the air outlet cover are both provided with sealing grooves, the sealing grooves can be connected to the sealing ribs in an embedded and clamped mode, the filter element assembly comprises a filter screen frame and a cylinder installed on the filter screen frame, and the filter screen frame and the cylinder are sequentially installed in the box body at intervals. The filter screen is fixed in the filter screen frame after being selected according to requirements, the sealing performance of the box body assembly is improved through cooperation of the sealing ribs and the sealing grooves, meanwhile, the installation mode of the filter screen in the box body assembly is changed, gaps of the box body assembly are reduced, the sealing performance of the box body assembly is further improved, and potential safety hazards of a laboratory are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of laboratory purification and filtration, and in particular to a laboratory purification and filtration device. Background Technology

[0002] In the laboratory, experiments often result in the release of harmful gases. Therefore, experiments are usually conducted on the surface of a fume hood. The fume hood can promptly capture and collect harmful gases and then output them to a gas treatment device for harmless treatment. Since different types of experiments produce different harmful gases, the filter elements in the gas treatment device need to be replaced. For example, patent number CN222694169U discloses a filter for coating production that facilitates filter element replacement. The process for replacing an embedded filter element is described, specifically, inserting the appropriate filter element into the housing from the top and sealing the inside of the housing with a top cover. However, this filter is unsuitable for handling harmful gases generated in complex experiments due to its single-component filter element. Patent number CN222099595U discloses a conveniently assembled purification filter element, which describes multiple filter screens placed sequentially in two filter cartridges, with round-headed posts used as spacers to separate the filter cartridges. In actual use, there are gaps between the splicing seams of multiple filter cartridges, resulting in insufficient sealing of the filter cartridge to meet the usage requirements. Harmful gases can easily escape from the splicing seams when passing through each filter cartridge, posing a certain safety hazard. Utility Model Content

[0003] The technical problem to be solved by this utility model is that: existing filter cartridges are prone to releasing harmful gases during use, which poses a safety hazard.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a laboratory purification filtration device, including a filter box assembly, a filter element assembly installed in the filter box assembly, and a filter screen installed in the filter element assembly. The filter box assembly includes a box body, an air inlet cover and an air outlet cover installed at both ends of the box body. Sealing ribs are protruding at both ends of the box body. Sealing grooves are opened on the air inlet cover and the air outlet cover. The sealing grooves can be fitted and snapped onto the sealing ribs. The filter element assembly includes a filter screen frame and a cylinder installed on the filter screen frame. The filter screen frame and the cylinder are installed in the box body in sequence at intervals. The filter screen is selected and fixed in the filter screen frame according to the requirements.

[0005] Furthermore, the box body has a cylindrical structure with a cavity, and the air inlet cover and the air outlet cover are respectively installed at both ends of the box body.

[0006] Furthermore, the air inlet cover and the air outlet cover have connecting protrusions extending toward the box body, and the connecting protrusions wrap around the edge of the box body.

[0007] Furthermore, the air inlet cover is provided with an air inlet pipe, and the air outlet cover is provided with an air outlet pipe, both of which are connected to the housing.

[0008] Furthermore, the filter assembly also includes a filter holder that is slidably mounted inside the housing, and the filter screen frame is slidably mounted in the filter holder.

[0009] Furthermore, the filter element frame is made of a right-angle bent profile, and the inner cavity sidewalls of the filter element frame parallel to the box body are all sealed with sealing plates.

[0010] Furthermore, the inner wall of the filter element holder has a sliding groove, and the side wall of the filter screen frame is equipped with a sliding strip, which can be slidably inserted into the sliding groove.

[0011] Furthermore, a right limiting protrusion is provided at one end of the inner cavity of the filter element frame, and the limiting protrusion is arranged along the circumference of the filter element frame.

[0012] The beneficial effects of this utility model are that by adding sealing ribs to the box body, adding sealing grooves to the covers at both ends of the box body, and increasing the sealing contact area at the inlet and outlet of the box body, the sealing performance of the filter box assembly is improved. At the same time, the use of filter frames and cylinders to achieve spaced placement inside the box body avoids segmented splicing of the box body, further enhancing the sealing performance of the filter box assembly, preventing harmful gases from escaping from the ends and middle parts of the box body, and reducing safety hazards during use. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a three-dimensional sectional view of the laboratory purification and filtration device of this utility model;

[0015] Figure 2 yes Figure 1 3D view of the middle filter element assembly;

[0016] Figure 3 This is a front view of the laboratory purification and filtration device of this utility model;

[0017] Figure 4 It is along Figure 3 Sectional view of AA;

[0018] Figure 5 yes Figure 4 A partial schematic diagram at point B in the middle;

[0019] In the figure: filter box assembly 10, filter element assembly 20, filter screen 30, box body 110, air inlet cover 120, air outlet cover 130, sealing rib 111, sealing groove 140, connecting protrusion 150, air inlet pipe 121, air outlet pipe 131, filter element frame 210, filter screen frame 220, cylinder 230, sliding groove 211, sliding strip 221, limiting protrusion 212. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0021] like Figures 1 to 5 As shown, this embodiment provides a laboratory purification filtration device, including a filter cartridge assembly 10 for gas filtration, a filter element assembly 20 installed in the filter cartridge assembly 10, and a filter screen 30 installed in the filter element assembly 20. The filter cartridge assembly 10 is connected to a laboratory gas collection system. Harmful gases generated in the laboratory are output to the filter cartridge assembly 10. The filter element assembly 20 is installed inside the filter cartridge assembly 10. The filter screen 30 is selected according to the type of harmful gas. After the harmful gas comes into contact with the filter screen 30, the filter screen 30 and the harmful gas react in the filter cartridge assembly 10, thereby treating the harmful gas.

[0022] like Figure 1 , Figure 3 as well as Figure 4 As shown, the filter cartridge assembly 10 includes a cartridge body 110, an air inlet cover 120 and an air outlet cover 130 installed at both ends of the cartridge body 110.

[0023] The housing 110 has a cylindrical structure with a cavity. Sealing ribs 111 protrude from the ends of the housing 110. An inlet cap 120 and an outlet cap 130 are respectively installed on both ends of the housing 110. Sealing grooves 140 are provided on the inlet cap 120 and the outlet cap 130 corresponding to the sealing ribs 111. The sealing grooves 140 can be fitted and snapped onto the sealing ribs 111 to increase the contact area, thereby improving the sealing performance of the filter assembly 10 and reducing the possibility of harmful gas escape. Preferably, the inlet cap 120 and the outlet cap 130 extend towards the housing 110 with connecting protrusions 150. The connecting protrusions 150 wrap around the edge of the housing 110, and the inlet cap 120 and the outlet cap 130 can be fixed to the side wall of the housing 110 through the connecting protrusions 150. An air inlet pipe 121 is provided on the air inlet cover 120, and an air outlet pipe 131 is provided on the air outlet cover 130. Both the air inlet pipe 121 and the air outlet pipe 131 are connected to the housing 110. The filter element assembly 20 and the filter screen 30 are detachably installed in the housing 110. The air inlet pipe 121 is connected to the laboratory's exhaust system, and the air outlet pipe 131 is connected to the venting system. Harmful gases react and are filtered with the filter screen 30 inside the housing 110.

[0024] like Figure 2 , Figure 4 as well as Figure 5 As shown, the filter element assembly 20 includes a filter element frame 210 slidably mounted in the housing 110, a filter screen frame 220 slidably mounted in the filter element frame 210, and a plurality of cylinders 230 mounted on the filter screen frame 220.

[0025] The inner cross-sections of the filter element frame 210 and the filter box 110 correspond. The filter element frame 210 is made of a right-angle bent profile. The inner cavity sidewalls of the filter element frame 210 parallel to the box 110 are all sealed with sealing plates. Finally, the filter element frame 210 can be embedded into the inner cavity of the filter box 110, forming a double-layer closed cavity columnar structure. The filter screen frame 220 can be slidably inserted into the filter element frame 210. There are multiple filter screen frames 220. The cylinders 230 are vertically installed on the edge of the filter screen frame 220. With the intervals of the cylinders 230, the filter screen frames 220 can be evenly distributed in the filter element frame 210.

[0026] Preferably, the inner wall of the filter element holder 210 has a sliding groove 211, and the side wall of the filter screen frame 220 is equipped with a sliding strip 221 corresponding to the sliding groove 211, the sliding strip 221 being slidably inserted into the sliding groove 211. One end of the inner cavity of the filter element holder 210 is provided with a limiting protrusion 212 protruding inward, the limiting protrusion 212 being arranged along the circumference of the filter element holder 210, the limiting protrusion 212 being used to support the filter screen frame 220.

[0027] Supported by the limiting protrusion 212 and the cylinder 230, the filter frame 220 is arranged in layers in the filter cartridge holder 210. Before using the purification filtration device, the staff adds the corresponding filter 30 to the filter frame 220 according to the filter material required by the laboratory, and arranges the filter frame 220 in the filter cartridge holder 210 in sequence to assemble the filter cartridge assembly 20.

[0028] The filter screen 30 is selected according to the filtration and purification requirements, and is arranged sequentially on the filter element holder 210 according to the filtration and purification order. The filter screen 30 can adopt a pocket-type structure or a cotton mesh structure. The filter screen frame 220 is divided into upper and lower layers, and the two layers of filter screen frame 220 clamp and fix the filter screen 30.

[0029] When using the above-mentioned laboratory purification filtration device, firstly, select the appropriate filter material 30 according to the filtration method required by the laboratory, clamp the filter 30 in the fixed filter frame 220, and place the filter frame 220 into the filter element holder 220 in sequence to form a filter element holder 220 that can process harmful gases in sequence. After the filter element holder 220 is assembled, open the air inlet cover 120, take out the old filter element holder 220, put in the new filter element holder 220, close the air inlet cover 120, and fix the air inlet cover 120 to the box body 110 with the help of the connecting protrusion 150, thereby squeezing and fixing the filter element holder 210 and the filter 30 in the box body 110. The harmful gases in the laboratory are discharged into the box body 110 through the air inlet cover 120. After the harmful gases pass through layers of filter screens 30, the harmfulness of the harmful gases is eliminated, and finally the gases can be discharged through the air outlet cover 130.

[0030] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A laboratory purification filtration device, characterized in that: The system includes a filter cartridge assembly (10), a filter element assembly (20) installed in the filter cartridge assembly (10), and a filter screen (30) installed in the filter element assembly (20). The filter cartridge assembly (10) includes a box body (110), an air inlet cover (120) and an air outlet cover (130) installed at both ends of the box body (110). Both ends of the box body (110) are provided with protruding sealing ribs (111). The air inlet cover (120) and the air outlet cover (130) are... Each of the filter elements (20) has a sealing groove (140) which can be fitted and snapped onto the sealing rib (111). The filter element assembly (20) includes a filter frame (220) and a cylinder (230) installed on the filter frame (220). The filter frame (220) and the cylinder (230) are installed in the box (110) in sequence at intervals. The filter (30) is selected according to the requirements and then fixed in the filter frame (220).

2. The laboratory purification filtration device according to claim 1, characterized in that: The box body (110) has a columnar structure with a cavity, and the air inlet cover (120) and the air outlet cover (130) are respectively installed on both ends of the box body (110).

3. The laboratory purification filtration device according to claim 1, characterized in that: The air inlet cap (120) and the air outlet cap (130) have connecting protrusions (150) extending toward the box body (110), and the connecting protrusions (150) wrap around the edge of the box body (110).

4. The laboratory purification filtration device according to claim 1, characterized in that: An air inlet pipe (121) is provided on the air inlet cover (120), and an air outlet pipe (131) is provided on the air outlet cover (130). Both the air inlet pipe (121) and the air outlet pipe (131) are connected to the box body (110).

5. A laboratory purification filtration device according to claim 1, characterized in that: The filter element assembly (20) further includes a filter element holder (210) slidably installed in the housing (110), and the filter screen frame (220) is slidably installed in the filter element holder (210).

6. A laboratory purification filtration device according to claim 5, characterized in that: The filter element frame (210) is made of a right-angle bent profile, and the inner cavity sidewalls of the filter element frame (210) parallel to the box body (110) are all sealed with sealing plates.

7. A laboratory purification filtration device according to claim 5, characterized in that: The inner wall of the filter element holder (210) has a sliding groove (211), and the side wall of the filter screen frame (220) is equipped with a sliding strip (221), which can be slidably inserted into the sliding groove (211).

8. A laboratory purification filtration device according to claim 5, characterized in that: One end of the inner cavity of the filter element frame (210) is provided with a right limiting protrusion (212), which is arranged along the circumference of the filter element frame (210).

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