Constant-flow type dust sampling instrument

Abstract

The utility model provides a constant flow type dust sampling instrument, and belongs to the technical field of dust sampling. The constant-flow type dust sampling instrument comprises an equipment frame and a sampling assembly, the sampling assembly comprises a constant-flow suction fan, an air suction head, a linear sliding rail, a connecting pipe, a filter membrane, winding rollers and a cutting piece, the constant-flow suction fan and the air suction head are fixedly connected with the equipment frame, the winding rollers are symmetrically arranged, and the linear sliding rail is connected with the connecting pipe. One side of the filter membrane is wound on the outer side of one winding roller, the sliding end of the linear sliding rail is in sliding connection with the equipment frame, the sliding end of the linear sliding rail is fixedly connected with one end of the connecting pipe, and the side, close to the sliding end of the linear sliding rail, of the connecting pipe is inserted into the side, connected with the equipment frame, of the air suction head. And the other end of the connecting pipe is connected with the input end of the constant-flow suction fan. In the whole using process, the filter membrane is rapidly replaced, time and labor are saved, and the sampling efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of dust sampling, and more specifically, to a constant flow dust sampler. Background Technology

[0002] A constant flow dust sampler is used, with a microporous filter membrane as the carrier. The sampling flow rate and sampling time are selected. After sampling, the filter membrane is folded. Two blank samples are sampled at the same time. Therefore, the filter membrane after sampling needs to be removed and the blank filter element is installed, which is time-consuming and labor-intensive and reduces sampling efficiency. Utility Model Content

[0003] To overcome the above shortcomings, this application provides a constant flow dust sampler, which aims to improve the problem of the time-consuming and labor-intensive process of folding the filter membrane after sampling and simultaneously sampling two blank samples, which requires disassembling the filter membrane after sampling and then installing the blank filter element, thus reducing sampling efficiency.

[0004] This application provides a constant flow dust sampler, including a device frame and a sampling assembly. The sampling assembly includes a constant flow fan, a suction head, a linear slide rail, a connecting pipe, a filter membrane, a winding roller, and a cutting component. The constant flow fan and the suction head are both fixedly connected to the device frame. The winding rollers are symmetrically arranged. One side of the filter membrane is wound around the outside of one winding roller, and the other side of the filter membrane is wound around the outside of another winding roller. The filter membrane passes over one side of the suction head. The sliding end of the linear slide rail is slidably connected to the device frame. The sliding end of the linear slide rail is fixedly connected to one end of the connecting pipe. The side of the connecting pipe near the sliding end of the linear slide rail is inserted into the connection between the suction head and the device frame. The other end of the connecting pipe is connected to the input end of the constant flow fan.

[0005] In one specific implementation, a threaded head is provided on one side of the suction head, and a protective mesh is provided on the threaded head.

[0006] In one specific implementation, the linear guide rail includes a motor, a lead screw, and a slider. The lead screw and the slider are symmetrically arranged. The lead screw is rotatably connected to the equipment frame, and the slider is slidably connected to the equipment frame. The lead screw and the slider are threadedly connected. The motor is fixedly connected to the equipment frame, and the output end of the motor is drivenly connected to the lead screw. The slider is fixedly connected to one end of the connecting pipe.

[0007] In one specific implementation, the motor output end is provided with a first pulley, the equipment frame is provided with a second pulley, and the lead screw is provided with a third pulley. The first pulley is drivenly connected to one of the third pulleys and the second pulley, and the second pulley is drivenly connected to the other of the third pulleys.

[0008] In one specific implementation, a plug is provided on one side of the connecting pipe, the plug is fixedly connected to the slider, and a groove is provided on one side of the connection between the equipment frame and the suction head, and one side of the plug is inserted into the groove.

[0009] In one specific implementation, a limit head is provided on the upper part of the take-up roller, and a rotating handle is provided on the upper part of the take-up roller.

[0010] In one specific implementation, the bottom of the take-up roller is provided with a spring and a limiting bead, one end of the spring abuts against the inside of the equipment frame, the other end of the spring abuts against one side of the limiting bead, and the limiting bead abuts against the outside of the bottom of the take-up roller.

[0011] In one specific implementation, the cutting component includes a telescopic component, a cutter, and a top rod. One side of the cutter is slidably connected to the equipment frame, one side of the telescopic component is fixedly connected to the equipment frame, the output end of the telescopic component is fixedly connected to the cutter, one end of the top rod is fixedly connected to the equipment frame, and the other end of the top rod penetrates the interior of one side of the cutter.

[0012] Beneficial Effects: This application provides a constant flow dust sampler. The filter membrane passes through one side of the suction head, and a blank filter membrane is moved to the suction head side. The sliding end of the linear guide rail drives one end of the connecting tube to move, placing one end of the connecting tube against one side of the filter membrane and inserting it into the connection between the device and the suction head, achieving a seal between the connecting tube and the device frame. At this time, the constant flow suction fan operates, extracting air from inside the connecting tube. The connecting tube extracts air from inside the suction head, and the extracted air is filtered by the filter membrane. After sampling, the sliding end of the linear guide rail moves, causing one end of the connecting tube to separate from the device frame and the filter membrane. A take-up roller rotates, moving the sampled filter membrane to the cutting component side. At this time, the blank filter membrane moves to the suction head side. The sliding end of the linear guide rail moves again, driving one end of the connecting tube to move. At this point, the cutting end of the cutting component cuts off the sampled area of ​​the filter membrane. Throughout the entire process, rapid filter membrane replacement is achieved, saving time and effort, and improving sampling efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the constant flow dust sampler provided in the embodiments of this application;

[0015] Figure 2 A partial structural schematic diagram of the equipment rack and suction head provided for embodiments of this application;

[0016] Figure 3 A partial structural schematic diagram of the winding roller and filter membrane provided in the embodiments of this application;

[0017] Figure 4 A partial structural schematic diagram of the linear guide rail provided in the embodiments of this application;

[0018] Figure 5 A partial structural schematic diagram of the cutting component provided in the embodiments of this application.

[0019] In the diagram: 100-Equipment frame; 110-Second pulley; 120-Groove; 200-Sampling component; 210-Constant flow suction fan; 220-Suction head; 221-Threaded head; 230-Linear slide rail; 231-Motor; 232-Lead screw; 233-Slider; 234-First pulley; 235-Third pulley; 240-Connecting pipe; 241-Insertion pipe; 250-Filter membrane; 260-Take-up roller; 261-Limit head; 262-Rotating handle; 263-Spring; 264-Limit bead; 270-Cutting component; 271-Telescopic component; 272-Cutter; 273-Top rod. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0021] Please see Figure 1 This application provides a constant flow dust sampler, including a device frame 100 and a sampling component 200.

[0022] Please see Figures 1-5The sampling component 200 includes a constant flow suction fan 210, a suction head 220, a linear slide rail 230, a connecting pipe 240, a filter membrane 250, a winding roller 260, and a cutting component 270. The constant flow suction fan 210 and the suction head 220 are both fixedly connected to the equipment frame 100. The winding rollers 260 are symmetrically arranged; one side of the filter membrane 250 is wound around the outside of one winding roller 260, and the other side is wound around the outside of another winding roller 260. The filter membrane 250 passes over one side of the suction head 220. The sliding end of the linear slide rail 230 is slidably connected to the equipment frame 100, and the sliding end of the linear slide rail 230 is fixedly connected to one end of the connecting pipe 240. The connecting pipe 240 is located near the sliding end of the linear slide rail 230. The suction head 220 is inserted on one side at the connection between the suction head 220 and the equipment frame 100. The other end of the connecting pipe 240 is connected to the input end of the constant flow suction fan 210. A threaded head 221 is provided on one side of the suction head 220. The threaded head 221 is provided with a protective net. The linear slide rail 230 includes a motor 231, a lead screw 232 and a slider 233. The lead screw 232 and the slider 233 are symmetrically arranged. The lead screw 232 is rotatably connected to the equipment frame 100. The slider 233 is slidably connected to the equipment frame 100. The lead screw 232 and the slider 233 are threadedly connected. The motor 231 is fixedly connected to the equipment frame 100. The output end of the motor 231 is drivenly connected to the lead screw 232. The slider 233 is fixedly connected to one end of the connecting pipe 240.

[0023] The output end of motor 231 is provided with a first pulley 234, the equipment frame 100 is provided with a second pulley 110, and the lead screw 232 is provided with a third pulley 235. The first pulley 234 is connected to one of the third pulleys 235 and the second pulley 110 respectively. The second pulley 110 is connected to the other third pulley 235. A tube 241 is provided on one side of the connecting pipe 240. The tube 241 is fixedly connected to the slider 233. A groove 120 is provided on one side of the connection between the equipment frame 100 and the suction head 220. One side of the tube 241 is inserted into the groove 120. A limit head 261 is provided on the upper part of the take-up roller 260, and a limit head 261 is provided on the upper part of the take-up roller 260. The device has a rotating handle 262. The bottom of the take-up roller 260 is provided with a spring 263 and a limiting bead 264. One end of the spring 263 abuts against the inside of the equipment frame 100, and the other end of the spring 263 abuts against one side of the limiting bead 264. The limiting bead 264 abuts against the outside of the bottom of the take-up roller 260. The cutting component 270 includes a telescopic component 271, a cutter 272, and a top rod 273. One side of the cutter 272 is slidably connected to the equipment frame 100, and one side of the telescopic component 271 is fixedly connected to the equipment frame 100. The output end of the telescopic component 271 is fixedly connected to the cutter 272. One end of the top rod 273 is fixedly connected to the equipment frame 100, and the other end of the top rod 273 passes through the inside of one side of the cutter 272.

[0024] The working principle of this constant flow dust sampler is as follows: The filter membrane 250 passes one side of the suction head 220. A blank filter membrane 250 is moved to the side of the suction head 220. The sliding end of the linear slide rail 230 drives one end of the connecting pipe 240 to move, so that one end of the connecting pipe 240 abuts against one side of the filter membrane 250 and is inserted into the connection between the device and the suction head 220, achieving a seal between the connecting pipe 240 and the device frame 100. At this time, the constant flow suction fan 210 operates, extracting air from inside the connecting pipe 240. The connecting pipe 240 extracts air from inside the suction head 220, and the extracted air passes through the filter membrane 250. After sampling is completed, the sliding end of the linear slide rail 230 moves, causing one end of the connecting tube 240 to separate from the equipment frame 100 and the filter membrane 250. A take-up roller 260 is rotated to move the filter membrane 250 after sampling to the side of the cutting piece 270. At this time, the blank filter membrane 250 moves to the side of the suction head 220. The sliding end of the linear slide rail 230 moves again, causing one end of the connecting tube 240 to move. At this time, the cutting end of the cutting piece 270 cuts off the sampling area of ​​the filter membrane 250. In the whole process, the filter membrane 250 can be quickly replaced, saving time and effort and improving sampling efficiency.

[0025] It should be noted that the telescopic component 271 is an electric push rod.

[0026] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A constant flow dust sampler comprising: The utility model relates to a sampling device, including Device frame (100); Sampling assembly (200), the sampling assembly (200) includes constant current suction fan (210), suction head (220), linear slide rail (230), connecting pipe (240), filter membrane (250), winding roller (260) and cutting piece (270), constant current suction fan (210) and suction head (220) are fixedly connected with device frame (100), winding roller (260) is symmetrically arranged, one side of filter membrane (250) is wound on the outside of one winding roller (260), the other side of filter membrane (250) is wound on the outside of another winding roller (260), filter membrane (250) passes through one side of suction head (220), the sliding end of linear slide rail (230) is slidably connected with device frame (100), the sliding end of linear slide rail (230) is fixedly connected with one end of connecting pipe (240), connecting pipe (240) is inserted in one side of the connecting place of suction head (220) and device frame (100) near the sliding end of linear slide rail (230), and the other end of connecting pipe (240) is communicated with the input end of constant current suction fan (210).

2. The constant flow dust sampler of claim 1, wherein, One side of suction head (220) is provided with threaded head (221), and threaded head (221) is provided with protective net.

3. The constant flow dust sampler of claim 1, wherein, Linear slide rail (230) includes motor (231), lead screw (232) and sliding block (233), lead screw (232) and sliding block (233) are symmetrically arranged, lead screw (232) is rotatably connected with device frame (100), sliding block (233) is slidably connected with device frame (100), lead screw (232) is threadedly connected with sliding block (233), motor (231) is fixedly connected with device frame (100), the output end of motor (231) is drivingly connected with lead screw (232), and the one end of connecting pipe (240) is fixedly connected with sliding block (233).

4. The constant flow dust sampler of claim 3, wherein, The output end of motor (231) is provided with first pulley (234), the device frame (100) is provided with second pulley (110), the lead screw (232) is provided with third pulley (235), the first pulley (234) is drivingly connected with one of the third pulley (235) and the second pulley (110) respectively, and the second pulley (110) is drivingly connected with another third pulley (235).

5. The constant flow dust sampler of claim 3, wherein, One side of connecting pipe (240) is provided with spigot (241), spigot (241) is fixedly connected with sliding block (233), recess (120) is formed in one side of the connecting place of device frame (100) and suction head (220), and one side of spigot (241) is inserted in recess (120).

6. The constant flow dust sampler of claim 1, wherein, The upper portion of winding roller (260) is provided with limit head (261), and the upper portion of winding roller (260) is provided with rotating handle (262).

7. The constant flow dust sampler of claim 1, wherein, The bottom of the winding roller (260) is provided with a spring (263) and a limiting bead (264), one end of the spring (263) abuts against the inside of the equipment rack (100), the other end of the spring (263) abuts against one side of the limiting bead (264), and the limiting bead (264) abuts against the outside of the bottom of the winding roller (260).

8. The constant flow dust sampler of claim 1, wherein, The cutting part (270) comprises a telescopic part (271), a cutter (272) and a jacking rod (273), one side of the cutter (272) is in sliding connection with the equipment rack (100), one side of the telescopic part (271) is in fixed connection with the equipment rack (100), the output end of the telescopic part (271) is in fixed connection with the cutter (272), one end of the jacking rod (273) is in fixed connection with the equipment rack (100), and the other end of the jacking rod (273) penetrates through the inside of one side of the cutter (272).

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