Atmospheric pollutant sampling head

Abstract

The utility model discloses an atmospheric pollutant sampling head which comprises a detection device and a sampling assembly, the detection device and the sampling assembly are movably connected with each other, the sampling assembly comprises a sampling head, the top of the sampling head is provided with a sampling port, the inner wall of the sampling port is provided with a filter screen, the bottom of the sampling head is provided with a connecting pipe, and the connecting pipe is connected with the detection device. A rectangular plate is fixedly connected to the outer wall of the connecting pipe, and positioning holes are formed in the top surfaces of the rectangular plate and the detection device. According to the utility model, the four groups of fixing pins are inserted into the positioning holes, so that the sampling assembly and the detection device are in preliminary butt joint, the fixing pins can be further pressed and fixed by matching with the auxiliary fixing assembly, the butt joint stability of the sampling assembly and the detection device is ensured, and the two adjacent groups of fixing pins are connected with each other by the connecting strips; and the through holes in the convex blocks are hooked by fingers and are pulled upwards, so that the four groups of fixing pins can be pulled out at one time, and the disassembly and assembly work of the sampling assembly is further simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of air pollution sampling, and particularly to an air pollutant sampling head. Background Technique

[0002] Air pollution is a phenomenon in which certain substances enter the atmosphere due to human activities or natural processes, showing a sufficient concentration for a sufficient time, and thus harming human comfort, health and welfare or the environment. Therefore, it is necessary to regularly detect and analyze the atmosphere. During the air pollution detection process, an air pollutant sampling device is required, and the sampling head at the end of the device is used to sample the pollution source.

[0003] The following problems exist in the prior art:

[0004] In the prior art, the sampling head is usually connected to the main body of the detection device by means of bolts or threaded rotation, resulting in the need for people to consume more time when replacing the sampling head, thus reducing the replacement efficiency of the sampling head by people. Content of the Utility Model

[0005] In view of the problems in the related art, the present utility model proposes an air pollutant sampling head to overcome the above-mentioned technical problems existing in the prior related art.

[0006] For this reason, the specific technical solution adopted by the present utility model is as follows:

[0007] An air pollutant sampling head, comprising a detection device and a sampling assembly, the detection device and the sampling assembly are movably connected to each other, the sampling assembly includes a sampling head, a sampling port is opened at the top of the sampling head, a filter screen is arranged on the inner wall of the sampling port, a connecting pipe is arranged at the bottom of the sampling head, a rectangular plate is fixedly connected to the outer wall of the connecting pipe, positioning holes are opened on the top surfaces of both the rectangular plate and the detection device, a jack is opened at the center of the top of the detection device, fixing pins are inserted into the positioning holes, the number of the fixing pins is four groups and are respectively located at the four corners of the surface of the rectangular plate, a limiting sliding groove is opened at the top of the detection device, a connecting rod is fixedly connected to the inner wall of the limiting sliding groove, a guiding block is sleeved outside the connecting rod, an auxiliary fixing component is fixedly connected to the surface of the guiding block, and a protection component is arranged on the side surface of the sampling head.

[0008] Preferably, connecting strips are fixedly connected to the surfaces of two adjacent groups of the fixing pins, a convex block is fixedly connected to the center of the top of the connecting strip, and two through holes are opened on the surface of the convex block. By providing the connecting strips, two adjacent groups of the fixing pins are connected to each other, and the convex block on the connecting strip is hooked with a finger and pulled up through the through holes, so that the four groups of fixing pins can be pulled out at one time, further simplifying the disassembly and assembly work of the sampling assembly.

[0009] Preferably, the auxiliary fixing component includes a second connecting frame. A reset spring is provided on the inner top wall of the second connecting frame. The bottom end of the reset spring is fixedly connected to a fixing press block. A limiting groove is formed on the surface of the fixing press block. By providing the auxiliary fixing component, the fixing pin inserted into the positioning hole can be further pressed and fixed, ensuring the docking stability between the sampling component and the detection device.

[0010] Preferably, the top end of the reset spring is fixedly connected to a connecting block. The inner top wall of the second connecting frame is fixedly connected to a docking sleeve. A rubber anti-slip sleeve is fixedly connected to the inner wall of the docking sleeve. By providing the connecting block and inserting it into the docking sleeve, it can be directly pulled out during disassembly, facilitating the disassembly and assembly of the reset spring. The setting of the rubber anti-slip sleeve enables the two to be closely docked.

[0011] Preferably, docking holes are formed on both sides of the guiding block. Docking insertion rods are fixedly connected to the inner side wall of the limiting sliding groove. Magnetic attraction sheets are fixedly connected to the inside of the docking holes and the ends of the docking insertion rods. By providing the docking holes, when the guiding block slides to the edge of the limiting sliding groove, it is inserted into the docking insertion rod, and the position of the guiding block is fixed by the adsorption of the magnetic attraction sheets, thereby fixing the auxiliary fixing component.

[0012] Preferably, the protection component includes a first connecting frame. An installation hole is formed on the inner top wall of the first connecting frame. A telescopic rod is fixedly connected to the inside of the installation hole. The end of the telescopic rod is fixedly connected to a dust-proof cover. By providing the protection component, the sampling head can be shielded and protected after the sampling component is used, preventing external dust and moisture from entering the sampling port and causing pollution.

[0013] Preferably, the area of the dust-proof cover is slightly larger than the diameter of the sampling head. The dust-proof cover is made of plastic material. The dust-proof cover made of plastic parts has a simple structure and a low usage cost.

[0014] Preferably, a damping rotating shaft is provided on the side of the sampling head. The top end of the damping rotating shaft is connected to the inner side wall of the first connecting frame. The first connecting frame and the sampling head form a movable structure through the damping rotating shaft. By providing the damping rotating shaft, the protection component can be driven to rotate at an angle and can hover on the side during the use of the sampling component, without affecting the normal use of the sampling component.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. For this air pollutant sampling head, through four groups of set fixing pins inserted into the positioning holes, the sampling assembly is preliminarily docked with the detection device. Then, with the cooperation of the auxiliary fixing assembly, the fixing pins inserted into the positioning holes can be further pressed and fixed, ensuring the docking stability between the sampling assembly and the detection device. The connecting bars connect adjacent groups of fixing pins to each other. By hooking the through-hole on the convex block with a finger and pulling it upwards, the four groups of fixing pins can be pulled out at once, further simplifying the disassembly and assembly work of the sampling assembly.

[0017] 2. For this air pollutant sampling head, through the set protection assembly, after the sampling assembly is used, it can shield and protect the sampling head, preventing external dust and water vapor from entering the sampling port and causing pollution. The damping rotating shaft can drive the protection assembly to rotate at an angle and can hover on its side when the sampling assembly is in use, without affecting the normal use of the sampling assembly. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the air pollutant sampling head according to the embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure of the detection device according to the embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the auxiliary fixing assembly according to the embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the overall structure of the sampling assembly according to the embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the overall structure of the protection assembly according to the embodiment of the present invention.

[0024] In the figure: 1, detection device; 2, positioning hole; 3, jack; 4, sampling assembly; 401, sampling head; 402, connecting pipe; 403, rectangular plate; 404, sampling port; 405, filter screen; 406, damping rotating shaft; 5, protection assembly; 501, connecting frame one; 502, telescopic rod; 503, dust-proof cover; 6, connecting rod; 7, guiding block; 8, auxiliary fixing assembly; 801, connecting frame two; 802, docking sleeve; 803, connecting block; 804, return spring; 805, fixing pressure block; 9, docking insertion rod; 10, magnetic sheet; 11, fixing pin; 12, connecting strip. Detailed implementation mode

[0025] To further illustrate each embodiment, the present utility model provides attached drawings, which are part of the disclosure content of the present utility model. They are mainly used to illustrate the embodiments and can cooperate with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present utility model, an air pollutant sampling head is provided.

[0027] Embodiment 1;

[0028] As Figures 1-5 shown, the air pollutant sampling head according to an embodiment of the present utility model includes a detection device 1 and a sampling assembly 4, and is characterized in that: the detection device 1 and the sampling assembly 4 are movably connected to each other. The sampling assembly 4 includes a sampling head 401. A sampling port 404 is opened at the top of the sampling head 401. A filter screen 405 is arranged on the inner wall of the sampling port 404. A connecting pipe 402 is arranged at the bottom of the sampling head 401. A rectangular plate 403 is fixedly connected to the outer wall of the connecting pipe 402. Positioning holes 2 are opened on the top surfaces of both the rectangular plate 403 and the detection device 1. A jack 3 is opened at the center of the top of the detection device 1. Fixing pins 11 are inserted into the positioning holes 2. The number of the fixing pins 11 is four groups, and they are respectively located at the four corners of the surface of the rectangular plate 403. A limiting sliding groove is opened at the top of the detection device 1. A connecting rod 6 is fixedly connected to the inner wall of the limiting sliding groove. A guiding block 7 is sleeved outside the connecting rod 6. An auxiliary fixing assembly 8 is fixedly connected to the surface of the guiding block 7. A protection assembly 5 is arranged on the side surface of the sampling head 401.

[0029] In this embodiment, a connecting strip 12 is fixedly connected to the surfaces of two adjacent fixing pins 11. A convex block is fixedly connected to the center of the top of the connecting strip 12. Two through holes are opened on the surface of the convex block.

[0030] In this embodiment, the auxiliary fixing component 8 includes a second connecting frame 801. A reset spring 804 is arranged on the inner top wall of the second connecting frame 801. The bottom end of the reset spring 804 is fixedly connected with a fixing pressing block 805, and a limiting groove is formed on the surface of the fixing pressing block 805.

[0031] In this embodiment, the top end of the reset spring 804 is fixedly connected with a connecting block 803, and the inner top wall of the second connecting frame 801 is fixedly connected with a docking sleeve 802. The inner wall of the docking sleeve 802 is fixedly connected with a rubber anti-slip sleeve.

[0032] In this embodiment, docking holes are formed on both sides of the guiding block 7. A docking insertion rod 9 is fixedly connected to the inner side wall of the limiting sliding groove. Magnetic attraction sheets 10 are fixedly connected to the inside of the docking holes and the ends of the docking insertion rod 9.

[0033] Embodiment 2;

[0034] On the basis of Embodiment 1, a preferred embodiment of the air pollutant sampling head provided by the present utility model is as Figures 1 through 5 shown:

[0035] In this embodiment, the protection component 5 includes a first connecting frame 501. An installation hole is formed on the inner top wall of the first connecting frame 501. A telescopic rod 502 is fixedly connected to the inside of the installation hole. The end of the telescopic rod 502 is fixedly connected with a dust-proof cover 503.

[0036] In this embodiment, the area of the dust-proof cover 503 is slightly larger than the diameter of the sampling head 401, and the dust-proof cover 503 is made of plastic material.

[0037] In this embodiment, a damping rotating shaft 406 is arranged on the side surface of the sampling head 401. The top end of the damping rotating shaft 406 is connected with the inner side wall of the first connecting frame 501. The first connecting frame 501 and the sampling head 401 form a movable structure through the damping rotating shaft 406.

[0038] In order to facilitate the understanding of the above technical solution of the present utility model, the working principle or operation method of the present utility model in the actual process will be described in detail below.

[0039] In actual application, the connecting pipe 402 is inserted into the jack 3 at the top of the detection device 1. At this time, the rectangular plate 403 coincides with the positioning hole 2 at the top of the detection device 1. The fixing pin 11 is inserted into the positioning hole 2 to preliminarily connect the sampling assembly 4 with the detection device 1. Then, the second connecting frame 801 is pushed. The second connecting frame 801 moves by sliding on the connecting rod 6 through the guiding block 7. When the guiding block 7 slides to the edge of the limit sliding groove, the docking hole on its side is inserted onto the docking plug 9, and the position of the guiding block 7 is fixed by the adsorption of the magnetic sheet 10, thereby fixing the auxiliary fixing assembly 8. The fixing block 805 presses the fixing pin 11 under the contraction deformation of the return spring 804. Since the limiting groove formed on the surface of the fixing block 805 directly fits onto the fixing pin 11, the stability during the pressing and fixing of the two is relatively high. After the sampling and detection work is completed, the dust-proof cover 503 descends under the action of the telescopic rod 502 to shield and protect the sampling head 401, preventing external dust and moisture from entering the sampling port 404 and causing pollution. The damping rotating shaft 406 can drive the protection assembly 5 to rotate at an angle and can hover on its side when the sampling assembly 4 is in use, without affecting the normal use of the sampling assembly 4. When it is necessary to replace the sampling assembly 4, first release the pressing and fixing of the fixing pin 11 by the auxiliary fixing assembly 8, and then pull it to one side. Since the connecting strip 12 connects two adjacent fixing pins 11 to each other, the through hole on the convex block is hooked with a finger and pulled upward, and the four fixing pins 11 can be pulled out at one time, further simplifying the disassembly, installation and replacement work of the sampling assembly 4.

[0040] In summary, by means of the above technical solution of the present invention, through the four groups of fixing pins 11 provided, the sampling assembly 4 is preliminarily docked with the detection device 1 by inserting into the positioning hole 2. Then, in cooperation with the auxiliary fixing assembly 8, the fixing pin 11 inserted into the positioning hole 2 can be further pressed and fixed, ensuring the docking stability between the sampling assembly 4 and the detection device 1. The connecting strip 12 connects two adjacent fixing pins 11 to each other. The through hole on the convex block is hooked with a finger and pulled upward, and the four fixing pins 11 can be pulled out at one time, further simplifying the disassembly and installation work of the sampling assembly 4. The setting of the protection assembly 5 can shield and protect the sampling head 401 after the sampling assembly 4 is used, preventing external dust and moisture from entering the sampling port 404 and causing pollution. The damping rotating shaft 406 can drive the protection assembly 5 to rotate at an angle and can hover on its side when the sampling assembly 4 is in use, without affecting the normal use of the sampling assembly 4.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air pollutant sampling head, comprising a detection device (1) and a sampling assembly (4), characterized in that: The detection device (1) and the sampling assembly (4) are movably connected to each other. The sampling assembly (4) includes a sampling head (401). A sampling port (404) is formed at the top of the sampling head (401). A filter net (405) is arranged on the inner wall of the sampling port (404). A connecting pipe (402) is arranged at the bottom of the sampling head (401). A rectangular plate (403) is fixedly connected to the outer wall of the connecting pipe (402). Positioning holes (2) are formed on the top surfaces of both the rectangular plate (403) and the detection device (1). A jack (3) is formed at the center of the top of the detection device (1). Fixing pins (11) are inserted into the positioning holes (2). The number of the fixing pins (11) is four groups, and they are respectively located at the four corners of the surface of the rectangular plate (403). A limiting sliding groove is formed at the top of the detection device (1). A connecting rod (6) is fixedly connected to the inner wall of the limiting sliding groove. A guiding block (7) is sleeved on the outside of the connecting rod (6). An auxiliary fixing assembly (8) is fixedly connected to the surface of the guiding block (7). A protective assembly (5) is arranged on the side of the sampling head (401).

2. The air pollutant sampling head according to claim 1, wherein Connecting strips (12) are fixedly connected to the surfaces of two adjacent fixing pins (11). A convex block is fixedly connected to the center of the top of the connecting strip (12). Two through holes are formed on the surface of the convex block.

3. The air pollutant sampling head according to claim 1, characterized in that, The auxiliary fixing assembly (8) includes a second connecting frame (801). A return spring (804) is arranged on the inner top wall of the second connecting frame (801). A fixed pressing block (805) is fixedly connected to the bottom end of the return spring (804). A limiting groove is formed on the surface of the fixed pressing block (805).

4. The air pollutant sampling head according to claim 3, characterized in that, A connecting block (803) is fixedly connected to the top end of the return spring (804). A docking sleeve (802) is fixedly connected to the inner top wall of the second connecting frame (801). A rubber anti-slip sleeve is fixedly connected to the inner wall of the docking sleeve (802).

5. The air pollutant sampling head according to claim 1, characterized in that, Docking holes are formed on both sides of the guiding block (7). A docking insertion rod (9) is fixedly connected to the inner side wall of the limiting sliding groove. Magnetic attraction sheets (10) are fixedly connected to the inner parts of the docking holes and the ends of the docking insertion rod (9).

6. The air pollutant sampling head according to claim 1, wherein The protective assembly (5) includes a first connecting frame (501). A mounting hole is formed on the inner top wall of the first connecting frame (501). A telescopic rod (502) is fixedly connected to the inner part of the mounting hole. A dust-proof cover (503) is fixedly connected to the end of the telescopic rod (502).

7. The air pollutant sampling head according to claim 6, characterized in that, The area of the dust-proof cover (503) is slightly larger than the diameter of the sampling head (401). The dust-proof cover (503) is made of plastic material.

8. The air pollutant sampling head according to claim 1, characterized in that, A damping rotating shaft (406) is arranged on the side of the sampling head (401). The top end of the damping rotating shaft (406) is connected to the inner side wall of the first connecting frame (501). The first connecting frame (501) and the sampling head (401) form a movable structure through the damping rotating shaft (406).

Images