Atmospheric environment detection directional sampling filter device

Abstract

This utility model relates to the field of air sampling technology, and more particularly to a directional sampling and filtering device for atmospheric environmental detection. Its technical solution includes: a filter assembly, an intermediate chamber, and a gas storage assembly. The filter assembly is located at the bottom of the intermediate chamber, and the filter assembly consists of filter elements, a housing, and a rotating plate. The upper inner wall of the housing is threaded onto the lower outer wall of the intermediate chamber. The rotating plate is rotatably disposed within the housing, and each filter element is threaded at equal intervals onto the rotating plate. The gas storage assembly is located at the top of the intermediate chamber. The filter assembly consists of a cylindrical body, a piston slidably disposed within it, and two one-way valves. This utility model achieves the beneficial effects of high-efficiency purification, rapid replacement, and stable sampling through a multi-filter element rotation and replacement structure and a one-way filtration design.

Description

Technical Field

[0001] This utility model relates to the field of air sampling technology, and in particular to a directional sampling and filtering device for atmospheric environment detection. Background Technology

[0002] Currently, atmospheric environmental monitoring, as a crucial link in environmental protection and pollution control, places high demands on the collection and purification of air samples. Most traditional air sampling devices use disposable filters or a single filtration path, which is not only inconvenient to replace, but also prone to filter saturation during long-term sampling, leading to a decrease in filtration efficiency and affecting the accuracy of subsequent analysis. Although some devices are equipped with filtration functions, the filter replacement process is complicated, making it impossible to achieve continuous and interference-free multiple sampling.

[0003] Therefore, we propose a directional sampling and filtration device for atmospheric environmental monitoring to solve the existing problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a directional sampling and filtering device for atmospheric environmental detection.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an atmospheric environment detection directional sampling and filtration device, comprising a filter assembly, an intermediate cavity and a gas storage assembly, wherein the filter assembly is provided at the bottom of the intermediate cavity, the filter assembly is composed of filter elements, a housing and a rotating plate, the upper inner wall of the housing is threaded on the lower outer wall of the intermediate cavity, the rotating plate is rotatably disposed within the housing, and each of the filter elements is threaded at equal intervals on the rotating plate;

[0006] The top of the intermediate cavity is provided with a gas storage component, and the filter component consists of a cylinder, a piston that slides inside the cylinder, and two one-way valves.

[0007] Preferably, the rotating plate has a threaded opening that matches the outer wall of the filter element, and the filter element is threaded onto the threaded opening.

[0008] Preferably, a sealing gasket is glued to the top opening of the screw thread, and the upper surface of the filter element is lower than the upper surface of the sealing gasket.

[0009] Preferably, a knob is provided at the central axis of the rotating plate, and the knob is located at the bottom end of the enclosure.

[0010] Preferably, the top opening of the cylinder is provided with a cover, and a slide rod is slidably provided on the cover, with the bottom end of the slide rod located on the piston.

[0011] Preferably, the bottom opening of the cylinder is threaded at the top opening of the intermediate cavity, and the bottom opening of the cylinder is provided with a lower one-way valve, the one-way direction of which is air intake from the outside to the inside of the cylinder.

[0012] Preferably, the side opening of the cylinder is provided with an upper one-way valve, and the one-way direction of the upper one-way valve is from the inside to the outside, so that air is discharged from the inside of the cylinder.

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

[0014] During use, the directional sampling and filtration device for atmospheric environment detection of this utility model is used by personnel holding the device and drawing and storing the air to be tested through the air storage component.

[0015] When the gas storage unit is working, the operator manually pulls the slide bar, which drives the piston upward, thereby creating a negative pressure inside the cylinder. Under the action of negative pressure, air passes through the filter assembly and the intermediate chamber and enters the cylinder for temporary storage. Once a single cylinder is full of gas, it can be unscrewed from the intermediate chamber and replaced with a new cylinder.

[0016] The design of the lower one-way valve ensures unidirectional gas flow, allowing gas to enter the cylinder only from the outside. When it is necessary to discharge the gas temporarily stored in the cylinder, press the piston down, and the gas will be discharged from the side opening of the cylinder. The design of the upper one-way valve allows gas to be discharged only from the cylinder to the outside.

[0017] Before entering the air storage component, the air passes through the filter component to remove impurities. When in use, the individual filter element faces the bottom opening of the middle chamber. Under the traction of negative pressure, the air is filtered by the filter element. After the individual filter element has reached the specified number of filtrations, the operator can manually rotate the rotating plate by the knob to move the unused filter element to the bottom opening of the middle chamber, so as to achieve the purpose of quickly replacing the filter element.

[0018] This utility model has a filter assembly with multiple filter elements, which are linked to a rotary plate and a knob. The operator can manually rotate and replace the filter element after it reaches the end of its service life. The unused filter element can be quickly aligned with the air inlet at the bottom of the middle cavity, avoiding disassembly and improving replacement efficiency. It is suitable for continuous sampling scenarios.

[0019] Meanwhile, the one-way valves set at the top and bottom ensure the uniqueness of the airflow direction, eliminate the risk of sample contamination caused by air backflow, and ensure the validity of the sampling results. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the filter assembly structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the gas storage component structure of this utility model;

[0024] Figure 5 For the present utility model Figure 1 A cross-sectional structural diagram.

[0025] Figure label:

[0026] 1. Filter assembly; 101. Knob; 102. Filter element; 103. Enclosure; 104. Sealing gasket; 105. Threaded joint; 106. Rotating plate; 2. Intermediate cavity; 3. Gas storage assembly; 301. Cover; 302. Slide rod; 303. Piston; 304. Cylinder; 305. Upper check valve; 306. Lower check valve. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figures 1-5 As shown, this utility model proposes an atmospheric environment detection directional sampling and filtering device, including a filter component 1, an intermediate cavity 2, and a gas storage component 3. The gas storage component 3 is located at the top of the intermediate cavity 2. The filter component 1 consists of a cylinder 304, a piston 303 slidably disposed therein, and two one-way valves. A cover 301 is provided at the top opening of the cylinder 304, and a slide rod 302 is slidably disposed on the cover 301. The bottom end of the slide rod 302 is located on the piston 303. During use, the personnel hold the device and use the gas storage component 3 to draw and store the air to be tested. When the gas storage component 3 is working, the personnel manually pull the slide rod 302, which drives the piston 303 upward, thereby creating a negative pressure inside the cylinder 304. Under the action of negative pressure, the air passes through the filter component 1 and the intermediate cavity 2 and enters the cylinder 304 for temporary storage. After a single cylinder 304 is full of gas, it can be unscrewed from the intermediate cavity 2 and replaced with a new cylinder 304.

[0030] The bottom opening of the cylinder 304 is threaded at the top opening of the intermediate cavity 2. The bottom opening of the cylinder 304 is equipped with a lower one-way valve 306. The one-way direction of the lower one-way valve 306 is from the outside to the inside of the cylinder 304. Through the design of the lower one-way valve 306, it is ensured that the gas flows in one direction and the gas can only enter the cylinder 304 from the outside.

[0031] The side opening of the cylinder 304 is equipped with an upper one-way valve 305. The one-way direction of the upper one-way valve 305 is from the inside to the outside, so that the gas is discharged from the inside of the cylinder 304. When it is necessary to discharge the gas temporarily stored in the cylinder 304, the piston 303 is pressed down, and the gas is discharged from the side opening of the cylinder 304. Due to the design of the upper one-way valve 305, the gas can only be discharged from the cylinder 304 to the outside.

[0032] Example 2

[0033] like Figures 1-5 As shown, the present invention proposes an atmospheric environment detection directional sampling and filtration device. Compared with Embodiment 1, this embodiment further includes: a filter assembly 1 at the bottom of the intermediate cavity 2. The filter assembly 1 consists of a filter element 102, a housing 103, and a rotating plate 106. The upper inner wall of the housing 103 is threaded onto the lower outer wall of the intermediate cavity 2. The rotating plate 106 is rotatably disposed inside the housing 103. Each filter element 102 is threaded at equal intervals on the rotating plate 106. Before the air enters the air storage assembly 3, it passes through the filter assembly 1 to remove impurities from the air. When the filter assembly 1 is in use, a single filter element 102 faces the bottom opening of the intermediate cavity 2. Under the traction of negative pressure, the air is filtered by the filter element 102. After a single filter element 102 has reached a specified number of filtrations, the operator rotates the rotating plate 106, thereby moving the unused filter element 102 to the bottom opening of the intermediate cavity 2 to achieve the purpose of quickly replacing the filter element 102.

[0034] The rotating plate 106 has a threaded opening 105 that matches the outer wall of the filter element 102. The filter element 102 is threaded onto the threaded opening 105. The above-mentioned threaded engagement structure facilitates the disassembly, assembly, and replacement of the filter element 102 and the rotating plate 106, thereby facilitating the cleaning and regeneration of the filter element 102.

[0035] A sealing gasket 104 is glued to the top opening of the screw thread 105. The upper surface of the filter element 102 is lower than the upper surface of the sealing gasket 104. Through the design of the sealing gasket 104, during the installation of the housing 103, the housing 103 drives the sealing gasket 104 to contact the lower surface of the intermediate cavity 2, thereby ensuring the sealing performance between the corresponding filter element 102 and the bottom opening of the intermediate cavity 2.

[0036] A knob 101 is provided at the central axis of the rotating plate 106. The knob 101 is located at the bottom of the enclosure 103 and can be rotated manually by personnel through the knob 101.

[0037] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An atmospheric environment detection directional sampling and filtering device, comprising a filtering component (1), an intermediate cavity (2), and a gas storage component (3), characterized in that: The bottom end of the intermediate cavity (2) is provided with a filter assembly (1). The filter assembly (1) is composed of a filter element (102), a casing (103) and a rotating plate (106). The upper inner wall of the casing (103) is threaded on the lower outer wall of the intermediate cavity (2). The rotating plate (106) is rotatably disposed inside the casing (103). Each filter element (102) is threaded at equal intervals on the rotating plate (106). The top of the intermediate cavity (2) is provided with a gas storage component (3), and the filter component (1) consists of a cylinder (304), a piston (303) slidably disposed therein, and two one-way valves.

2. The atmospheric environment detection directional sampling and filtering device according to claim 1, characterized in that: The rotating plate (106) has a screw hole (105) that is adapted to the outer wall of the filter element (102), and the filter element (102) is threaded on the screw hole (105).

3. The atmospheric environment detection directional sampling and filtering device according to claim 2, characterized in that: A sealing gasket (104) is glued to the top opening of the screw (105), and the upper surface of the filter element (102) is lower than the upper surface of the sealing gasket (104).

4. The atmospheric environment detection directional sampling and filtering device according to claim 1, characterized in that: A knob (101) is provided at the central axis of the rotating plate (106), and the knob (101) is rotatably located at the bottom end of the casing (103).

5. The atmospheric environment detection directional sampling and filtering device according to claim 1, characterized in that: The top opening of the cylinder (304) is provided with a cover (301), and a slide rod (302) is slidably provided on the cover (301). The bottom end of the slide rod (302) is provided on the piston (303).

6. The atmospheric environment detection directional sampling and filtering device according to claim 1, characterized in that: The bottom opening of the cylinder (304) is threaded at the top opening of the intermediate cavity (2). The bottom opening of the cylinder (304) is provided with a lower one-way valve (306). The one-way direction of the lower one-way valve (306) is to allow air to enter the cylinder (304) from the outside to the inside.

7. The atmospheric environment detection directional sampling and filtering device according to claim 1, characterized in that: The side opening of the cylinder (304) is provided with an upper one-way valve (305), and the one-way direction of the upper one-way valve (305) is from the inside to the outside, from the inside of the cylinder (304) to the outside.

Images