Air sampler convenient for replacing filter membrane

Abstract

The utility model relates to the technical field of air samplers, and discloses an air sampler convenient to replace a filter membrane, which comprises a rotating structure, a connecting structure and a main body structure, the connecting structure is positioned at the top of the rotating structure, and the main body structure is positioned at the bottom of the rotating structure; the rotating structure comprises a lower collecting head, a boss is arranged on one side of the lower collecting head, a mounting hole is formed in the boss, a rotating shaft is rotatably connected to the interior of the mounting hole, a connecting rod is rotatably connected to the top of the rotating shaft, and a placement groove is fixedly connected to the right end of the connecting rod; a filter membrane is arranged in the placement groove, a first groove is formed in the top of the lower collection head, and a first magnet is fixedly connected to the interior of the first groove. According to the utility model, the placing groove, the rotating shaft and the connecting rod are arranged, and the connecting rod rotates through the rotating shaft, so that the placing groove rotates out from the top of the lower collecting head to replace the filter membrane, and additional tools are not needed when the filter membrane is replaced.

Description

Technical Field

[0001] This utility model relates to the field of air sampler technology, and in particular to an air sampler with an easy-to-replace filter membrane. Background Technology

[0002] An air sampler, also known as an aspirating smoke detector or an air sampling fire detector, uses an air sampling tube to draw air from a protected area into the detector for analysis, thereby providing early warning of fires.

[0003] The air sampler system includes a detector and a sampling network. The detector consists of an air intake pump, a filter, a laser detection chamber, control circuitry, and display circuitry. The air intake pump continuously collects air samples from the protected area through a sampling network composed of PVC or steel pipes and places them into the detector. After the air sample passes through a filter assembly to remove dust particles, it enters the detection chamber, which contains a stable laser light source. Smoke particles scatter the laser light, and the scattered light generates a signal in a highly sensitive light receiver. After system analysis, photoelectric conversion is completed. The smoke concentration value and its alarm level are displayed on the monitor. The main unit transmits electrical signals to the fire alarm control center and centralized display device via a relay or communication interface. The main components of the instrument include a diaphragm pump, regulating valve, buffer, flow meter, and central processing unit. It uses the latest chip-based timing and power control. Its compact structure, stable performance, small size, light weight, portability, and wide sampling range make it compatible with various absorption tubes and solid adsorption tubes, making it a relatively ideal and practical air sampler among small, wide-range portable atmospheric samplers in China. The detection principle of the air sampler detection system is based on the air pump inside the main unit, which draws air samples back to the detection chamber through the air sampling pipeline that extends to the detection area for detection. When the concentration of the detected substance in the air sample reaches a certain level, the system will issue an alarm.

[0004] However, existing air samplers require separating the sampling head from the connecting tube when replacing the filter membrane, and then replacing the filter membrane inside the connecting tube. The sampling head and the connecting tube are mostly fixed together by traditional bolts. In actual use, the filter membrane needs to be replaced with a special tool, which increases the replacement time. Therefore, this utility model provides an air sampler that facilitates filter membrane replacement. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an air sampler with an easy-to-replace filter membrane.

[0006] This utility model is achieved by the following technical solution: an air sampler that facilitates filter membrane replacement, comprising a rotating structure, a connecting structure, and a main body structure, wherein the connecting structure is located at the top of the rotating structure, and the main body structure is located at the bottom of the rotating structure;

[0007] The rotating structure includes a lower collection head, a boss on one side of the lower collection head, a mounting hole inside the boss, a rotating shaft rotatably connected inside the mounting hole, a connecting rod rotatably connected to the top of the rotating shaft, a placement groove fixedly connected to the right end of the connecting rod, a filter membrane being disposed inside the placement groove, and a first groove on the top of the lower collection head, a first magnet fixedly connected inside the first groove.

[0008] As a further improvement to the above solution, the connecting rod is configured as a ring structure, and the placement groove is configured as a disc structure.

[0009] With the above technical solution, the connecting rod is easy to stretch, and the filter membrane can be placed directly inside the placement slot, saving time and effort.

[0010] As a further improvement to the above scheme, the number of the first grooves is set to four, the following collection heads are symmetrically distributed along the axis, and the number of the first magnets is set to four.

[0011] With the above technical solution, the connecting rod rotates through the rotating shaft, causing the placement slot to rotate out from the top of the lower collection head, thereby replacing the filter membrane. The first magnet magnetically fixes the placement slot and the filter membrane, improving the convenience of the overall device. This eliminates the need for additional tools when replacing the filter membrane, thus improving the ease of use of the device.

[0012] As a further improvement to the above solution, the connection structure includes an upper acquisition head, the upper acquisition head having a second groove, and a second magnet being disposed inside the second groove.

[0013] As a further improvement to the above solution, the second groove is arranged symmetrically with the first groove, and the second magnet is arranged symmetrically with the first magnet.

[0014] Through the above technical solution, the second magnet and the first magnet attract each other magnetically, so that the lower collection head and the upper collection head are connected and sealed to each other, thereby improving the overall sealing performance of the device.

[0015] As a further improvement to the above solution, the main structure includes an air sampler body, a control panel is provided on the surface of the air sampler body, a display screen is provided on the surface of the control panel, control buttons are fixedly connected to the bottom of the display screen, and a connecting pipe is fixedly connected to the top of the air sampler body, with external threads provided on the top of the connecting pipe.

[0016] The above technical solution allows the control panel to control the entire device, and the display screen shows the smoke concentration value and its alarm level.

[0017] As a further improvement to the above solution, the connecting pipe is connected to the lower acquisition head via an external thread.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention features a placement slot, a rotating shaft, and a connecting rod. The connecting rod rotates along the shaft, causing the placement slot to emerge from the top of the lower collection head, facilitating filter membrane replacement. A first magnet magnetically holds the placement slot and filter membrane in place, improving the overall ease of use and eliminating the need for additional tools during filter membrane replacement. The connecting rod is easy to extend, allowing the filter membrane to be placed directly inside the placement slot, saving time and effort. The control panel controls the entire device, and the display screen shows the smoke concentration value and its alarm level.

[0020] This invention improves the overall sealing performance of the device by setting a first magnet and a second magnet, with the second magnet and the first magnet magnetically attracting each other. This allows the lower and upper collection heads to be connected and sealed together. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This utility model Figure 1 Enlarged structural diagram of section A in the middle;

[0023] Figure 3 This is a schematic diagram of the rotating structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the connection structure of this utility model.

[0025] Figure 5 This utility model Figure 4 Enlarged structural diagram of section B.

[0026] Explanation of key symbols:

[0027] 1. Rotating structure; 101. Lower sampling head; 102. Boss; 103. Mounting hole; 104. Rotating shaft; 105. Connecting rod; 106. Placement groove; 107. Filter membrane; 108. First groove; 109. First magnet; 2. Connecting structure; 201. Upper sampling head; 202. Second groove; 203. Second magnet; 3. Main structure; 301. Air sampler body; 302. Control panel; 303. Display screen; 304. Control button; 305. Connecting pipe; 306. External thread. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] Example:

[0030] Please combine Figure 1-5 An air sampler with an easy-to-replace filter membrane according to this embodiment includes a rotating structure 1, a connecting structure 2, and a main body structure 3. The connecting structure 2 is located at the top of the rotating structure 1, and the main body structure 3 is located at the bottom of the rotating structure 1.

[0031] The rotating structure 1 includes a lower sampling head 101. A boss 102 is provided on one side of the lower sampling head 101. A mounting hole 103 is provided inside the boss 102. A rotating shaft 104 is rotatably connected inside the mounting hole 103. A connecting rod 105 is rotatably connected to the top of the rotating shaft 104. A placement groove 106 is fixedly connected to the right end of the connecting rod 105. A filter membrane 107 is provided inside the placement groove 106. A first groove 108 is provided on the top of the lower sampling head 101. A first magnet 109 is fixedly connected inside the first groove 108.

[0032] The connecting rod 105 is designed as a ring structure, and the placement groove 106 is designed as a disc structure. The connecting rod 105 is easy to stretch, and the filter membrane 107 can be directly placed inside the placement groove 106, saving time and effort.

[0033] There are four first grooves 108, symmetrically distributed around the lower collection head 101, and four first magnets 109. The connecting rod 105 rotates through the rotating shaft 104, causing the placement groove 106 to rotate out from the top of the lower collection head 101, thereby replacing the filter membrane 107. The first magnets 109 magnetically fix the placement groove 106 and the filter membrane 107, improving the convenience of the overall device. This allows the filter membrane 107 to be replaced without the need for additional tools, thus improving the ease of use of the device.

[0034] The connection structure 2 includes an upper collection head 201, which has a second groove 202 and a second magnet 203 inside the second groove 202.

[0035] The second groove 202 is symmetrically arranged above and below the first groove 108, and the second magnet 203 is symmetrically arranged above and below the first magnet 109. The second magnet 203 and the first magnet 109 are magnetically attracted to each other, so that the lower collecting head 101 and the upper collecting head 201 are connected and sealed to each other, improving the overall sealing performance of the device.

[0036] The main structure 3 includes an air sampler body 301. A control panel 302 is mounted on the surface of the air sampler body 301. A display screen 303 is mounted on the surface of the control panel 302. Control buttons 304 are fixedly connected to the bottom of the display screen 303. A connecting pipe 305 is fixedly connected to the top of the air sampler body 301, and an external thread 306 is provided on the top of the connecting pipe 305. The control panel 302 controls the entire device, and the display screen 303 displays the smoke concentration value and its alarm level.

[0037] The connecting pipe 305 is threadedly connected to the lower acquisition head 101 via the external thread 306.

[0038] The implementation principle of an air sampler with an easy-to-replace filter membrane in this embodiment is as follows: The connecting rod 105 rotates through the rotating shaft 104, causing the placement slot 106 to rotate out from the top of the lower sampling head 101, thereby replacing the filter membrane 107. The connecting rod 105 is easy to stretch, and the filter membrane 107 can be directly placed inside the placement slot 106, saving time and effort. The first magnet 109 magnetically fixes the placement slot 106 and the filter membrane 107, improving the convenience of the overall device, so that the filter membrane 107 can be replaced without the need for additional tools, improving the ease of use of the device. The second magnet 203 is magnetically attracted to the first magnet 109, so that the lower sampling head 101 and the upper sampling head 201 are connected and sealed to each other, improving the sealing performance of the overall device. The control panel 302 controls the overall device, and the display screen 303 displays the smoke concentration value and its alarm level.

[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An air sampler that is easy to replace the filter membrane, characterized in that: The invention comprises a rotating structure (1), a connecting structure (2) and a main structure (3), wherein the connecting structure (2) is located at the top of the rotating structure (1), and the main structure (3) is located at the bottom of the rotating structure (1); The rotating structure (1) comprises a lower collecting head (101), a boss (102) is provided on one side of the lower collecting head (101), a mounting hole (103) is provided inside the boss (102), a rotating shaft (104) is rotatably connected inside the mounting hole (103), a connecting rod (105) is rotatably connected to the top of the rotating shaft (104), a placement groove (106) is fixedly connected to the right end of the connecting rod (105), a filter membrane (107) is provided inside the placement groove (106), a first groove (108) is provided on the top of the lower collecting head (101), and a first magnet (109) is fixedly connected inside the first groove (108).

2. An air sampler for easy replacement of filter membrane as claimed in claim 1, characterized in that: The connecting rod (105) is configured as a circular ring structure, and the placement groove (106) is configured as a disc structure.

3. The air sampler for easy replacement of filter membrane as claimed in claim 1, characterized in that: The number of the first grooves (108) is four, and the collecting head (101) is symmetrically distributed about the axis, and the number of the first magnets (109) is four.

4. The air sampler for easy replacement of filter membrane as claimed in claim 1, characterized in that: The connection structure (2) comprises an upper collecting head (201), the upper collecting head (201) is provided with a second groove (202), and a second magnetic absorption block (203) is arranged inside the second groove (202).

5. An air sampler for easy replacement of filter membrane as claimed in claim 4, characterized in that: The second groove (202) and the first groove (108) are arranged symmetrically up and down, and the second magnet block (203) and the first magnet block (109) are arranged symmetrically up and down.

6. An air sampler for easy replacement of filter membrane as claimed in claim 1, characterized in that: The main structure (3) comprises an air sampler body (301), a control panel (302) is arranged on the surface of the air sampler body (301), a display screen (303) is arranged on the surface of the control panel (302), a control button (304) is fixedly connected to the bottom of the display screen (303), a connecting pipe (305) is fixedly connected to the top of the air sampler body (301), and an external thread (306) is arranged on the top of the connecting pipe (305).

7. An air sampler for easy replacement of filter membrane as claimed in claim 6, characterized in that: The connecting pipe (305) is threadedly connected to the lower collecting head (101) via an external thread (306).

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