Automatic paper feeding device for aerosol measurement

Abstract

The utility model provides an automatic paper feeding device for aerosol measurement, which comprises a mounting frame, a driving seat arranged at the inner bottom end of the mounting frame, a plurality of sliding rods arranged on the driving seat, a sliding column arranged on the upper side of each sliding rod in a sliding manner, a support arranged at the top end of each sliding column, and a tension roller rotationally arranged between the transversely adjacent supports, tension sensors are arranged on the supports, the tension sensors are connected with the adjacent tension rollers respectively, a driving mechanism used for driving the tension rollers to move is further arranged on the driving seat, and the driving mechanism is used for driving the tension rollers to move. According to the automatic paper feeding device for aerosol measurement, the tension roller is driven to stably move by adjusting the thread relation between the lead screw and the driving block, so that the tension of filter paper between the paper releasing roller and the paper collecting roller is stably and accurately adjusted, and the filter paper can be prevented from being too tight or too loose when aerosol is filtered; and the aerosol can be better measured.

Description

Technical Field

[0001] This utility model belongs to the field of aerosol measurement technology, and specifically relates to an automatic paper feeding device for aerosol measurement. Background Technology

[0002] Aerosol measurement is a key technology for studying the physical properties, chemical composition, concentration distribution, and sources of suspended particulate matter (such as PM2.5, PM10, dust, and soot) in the air. It is widely used in environmental monitoring, industrial hygiene, climate research, and public health. Automatic paper feeding devices are needed in aerosol measurement to continuously collect aerosol samples for subsequent analysis.

[0003] Existing automatic paper feeding devices for aerosol measurement use a paper unwinding roller to unwind the filter paper, a paper take-up roller to take it back, and a filter paper support mesh to support the filter paper, thus enabling automatic filter paper replacement. This allows the filter paper on the support mesh to meet the needs of aerosol measurement. However, in actual use, during automatic filter paper replacement, a spring structure is used to adjust the tension of the filter paper between the paper unwinding and take-up rollers by supporting the filter paper with a tension roller to prevent the filter paper from being too tight or too loose. After a certain period of use, the spring's rebound force decreases, which in turn affects the accuracy of the filter paper tension adjustment. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing an automatic paper feeding device for aerosol measurement. By adjusting the thread relationship between the lead screw and the drive block, the tension roller is driven to move stably, thereby stabilizing and precisely adjusting the tension of the filter paper between the paper feeding roller and the paper taking roller. This can prevent the filter paper from being too tight or too loose when filtering aerosols, and can better measure aerosols.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an automatic paper feeding device for aerosol measurement, including a mounting frame, a drive seat is provided at the bottom of the mounting frame, a plurality of slide rods are provided on the drive seat, a slide column is slidably provided on the upper side of each slide rod, a support is provided at the top of each slide column, tension rollers are rotatably provided between the laterally adjacent supports, tension sensors are provided on each support, and the tension sensors are respectively connected to the adjacent tension rollers. The drive seat is also provided with a drive mechanism for driving the tension rollers to move; a filter paper support mesh is provided between the supports.

[0006] As a further improvement of this utility model, the drive mechanism includes sliders that slide symmetrically inside the drive base. Each slider has a connecting rod rotatably mounted on the side away from the vertical center of the mounting frame. The end of the connecting rod away from the slider is rotatably connected to an adjacent sliding column. The drive base has symmetrically distributed guide rails inside, and symmetrically distributed drive blocks slide between the guide rails. The drive blocks are respectively connected and fixed to adjacent sliders. The drive base also has symmetrically distributed adjusting screws rotatably mounted inside. The output shafts of the dual-axis motor are fixed to adjacent adjusting screws via couplings.

[0007] As a further improvement of this utility model, the mounting frame is internally equipped with four rotating shafts. A paper feeding roller is fixedly connected between two horizontally adjacent rotating shafts by bolts, and a paper receiving roller is fixedly connected between two rotating shafts away from the paper feeding roller by bolts. A servo motor is provided on the outside of the mounting frame, and the output shaft of the servo motor is fixed to the adjacent rotating shafts by a coupling.

[0008] As a further improvement of this utility model, a frame is provided on the lower surface of the mounting bracket, and multiple mounting plates are provided on the outer side of the frame. A control box is provided on the frame, and the dual-axis motor, servo motor and tension sensor are all electrically connected to the control box.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] Firstly, the tension sensor is controlled by the control box, which detects the tension of the filter paper on the tension roller and transmits it to the control box. Then, the control box controls the operation of the dual-axis motor based on the transmitted tension data.

[0011] Secondly, the output shafts of the dual-axis motors drive the adjusting screws connected to them to operate, so that the output shafts of the adjusting screws drive the driving blocks on both sides to move towards each other or away from each other through the threaded relationship between them. This causes the support to drive the tension roller to rise or fall, adjusting the tension of the filter paper between the paper feeding roller and the paper receiving roller until the tension transmitted to the control box by the tension sensor reaches the normal state.

[0012] Third, the feed roller and take-up roller are respectively installed on the rotating shaft with bolts, so that the filter paper on the feed roll passes around the two tension rollers and is then wound onto the take-up roll; the servo motor is controlled by the control box to transport the filter paper and realize the self-feeding of the filter paper.

[0013] Fourth, by adjusting the thread relationship between the lead screw and the drive block, the tension roller can be moved stably, thereby making stable and precise adjustment of the tension of the filter paper between the paper feeding roller and the paper taking roller. This can prevent the filter paper from being too tight or too loose when filtering aerosols, and can better measure the aerosols. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0017] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0018] Figure 4 This is a schematic diagram of the planar structure of this utility model.

[0019] In the diagram: 101, frame; 102, mounting plate; 103, mounting bracket; 104, rotating shaft; 105, paper feeding roller; 106, paper taking roller; 107, servo motor; 201, drive base; 202, slide bar; 203, slide column; 204, support; 205, tension roller; 206, tension sensor; 207, filter paper support mesh; 208, slider; 209, connecting rod; 210, guide rail; 211, drive block; 212, dual-axis motor; 213, adjusting screw; 301, control box. Detailed Implementation

[0020] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0021] like Figure 2 , 4 As shown, the device includes a mounting frame 103. A drive base 201 is provided at the bottom of the mounting frame 103. Multiple slide rods 202 are provided on the drive base 201. A slide column 203 is slidably provided on the upper side of each slide rod 202. A support 204 is provided at the top of each slide column 203. Tension rollers 205 are rotatably provided between the laterally adjacent supports 204. Tension sensors 206 are provided on each support 204. The tension sensors 206 are respectively connected to the adjacent tension rollers 205. The drive base 201 is also provided with a drive mechanism for driving the tension rollers 205 to move.

[0022] like Figure 2 , 3As shown, the drive mechanism includes sliders 208 that slide symmetrically inside the drive base 201. Each slider 208 has a connecting rod 209 rotatably mounted on the side away from the vertical center of the mounting bracket 103. The end of the connecting rod 209 away from the slider 208 is rotatably connected to an adjacent sliding column 203. The drive base 201 has symmetrically distributed guide rails 210 inside. The guide rails 210 are slidably arranged between the guide rails 210. The drive blocks 211 are connected and fixed to the adjacent sliders 208. The drive base 201 has symmetrically distributed adjusting screws 213 rotatably mounted inside. The output shaft of the dual-axis motor 212 is fixed to the adjacent adjusting screws 213 by couplings.

[0023] like Figure 1 , 2 As shown, the mounting frame 103 has four rotating shafts 104 rotatably arranged inside. A paper feeding roller 105 is fixedly connected between two horizontally adjacent rotating shafts 104 by bolts. A paper receiving roller 106 is fixedly connected between two rotating shafts 104 away from the paper feeding roller 105 by bolts. A servo motor 107 is arranged on the outside of the mounting frame 103. The output shaft of the servo motor 107 is fixed to the adjacent rotating shafts 104 by a coupling. A frame 101 is arranged on the lower surface of the mounting frame 103. Multiple mounting plates 102 are arranged on the outside of the frame 101. A control box 301 is arranged on the frame 101. The dual-axis motor 212, the servo motor 107 and the tension sensor 206 are all electrically connected to the control box 301.

[0024] like Figure 1 , 2 As shown, a filter paper support mesh 207 is provided between the supports 204.

[0025] In use, the filter paper feed roll is placed on the feed roller 105 and the filter paper take-up roll is placed on the take-up roller 106. The feed roller 105 and the take-up roller 106 are respectively mounted on the rotating shaft 104 with bolts. Then, the filter paper on the feed roll passes around the two tension rollers 205 and is wound onto the take-up roll. The servo motor 107 is controlled by the control box 301 to transport the filter paper and realize the self-feeding of the filter paper.

[0026] The control box 301 regulates the operation of the tension sensor 206, so that the tension sensor 206 detects the tension of the filter paper on the tension roller 205 and transmits it to the control box 301. Then, the control box 301 controls the dual-axis motor 212 to run according to the transmitted tension data.

[0027] The output shaft of the dual-axis motor 212 drives the adjusting screw 213 connected to it to run. The output shaft of the adjusting screw 213 drives the driving blocks 211 on both sides to move towards each other or away from each other through the threaded relationship between the screw and the driving block 211. This causes the sliders 208 on both sides to move towards each other or away from each other. During the movement of the slider 208, the slider 208 rotates with the connecting rod 209. At the same time, the connecting rod 209 rotates with the sliding column 203. This causes the slider 208 to slide with the sliding column 203 and the sliding rod 202 through the connecting rod 209. This causes the support 204 at the top of the sliding rod 202 to rise or fall. The support 204 causes the tension roller 205 to rise or fall, adjusting the tension of the filter paper between the paper feeding roller 105 and the paper receiving roller 106 until the tension transmitted to the control box 301 by the tension sensor 206 reaches the normal state.

[0028] By adjusting the thread relationship between the lead screw 213 and the drive block 211, the tension roller 205 is driven to move stably, thereby stabilizing and precisely adjusting the tension of the filter paper between the paper feeding roller 105 and the paper taking roller 106. This can prevent the filter paper from being too tight or too loose when filtering aerosols, and can better measure the aerosols.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. An automatic paper-feeding device for aerosol measurement comprising a mounting rack (103), characterized in that: The mounting bracket (103) has a drive base (201) at its bottom. The drive base (201) has multiple slide rods (202). Each slide rod (202) has a slide column (203) slidably mounted on its upper side. Each slide column (203) has a support (204) at its top. Tension rollers (205) are rotatably mounted between adjacent supports (204). Tension sensors (206) are mounted on each support (204). The tension sensors (206) are connected to adjacent tension rollers (205). The drive base (201) also has a drive mechanism for moving the tension rollers (205).

2. The automatic chart runner for aerosol measurement according to claim 1, wherein: The driving mechanism includes a slider (208) that slides symmetrically inside the drive seat (201). A connecting rod (209) is rotatably provided on the side of the slider (208) away from the vertical center of the mounting frame (103). The end of the connecting rod (209) away from the slider (208) is rotatably connected to the adjacent sliding column (203).

3. The automatic chart runner for aerosol measurement according to claim 2, wherein: The drive base (201) is provided with symmetrically distributed guide rails (210) inside, and symmetrically distributed drive blocks (211) are slidably arranged between the guide rails (210). The drive blocks (211) are respectively connected and fixed to the adjacent sliders (208). The drive base (201) is provided with symmetrically distributed adjusting screws (213) inside.

4. The automatic chart runner for aerosol measurement according to claim 3, wherein: The output shaft of the dual-axis motor (212) is fixed to the adjacent adjusting screw (213) by couplings, and the dual-axis motor (212) is located inside the mounting bracket (103).

5. The automatic chart runner for aerosol measurement according to claim 4, wherein: The mounting frame (103) has four rotating shafts (104) inside. A paper feeding roller (105) is fixed between two horizontally adjacent rotating shafts (104) by bolts. A paper receiving roller (106) is fixed between two rotating shafts (104) away from the paper feeding roller (105) by bolts. A servo motor (107) is provided on the outside of the mounting frame (103). The output shaft of the servo motor (107) is fixed to the adjacent rotating shaft (104) by a coupling.

6. The automatic paper advancing device for aerosol measurement according to claim 5, wherein: The mounting bracket (103) has a frame (101) on its lower surface. Multiple mounting plates (102) are provided on the outside of the frame (101). A control box (301) is provided on the frame (101). The dual-axis motor (212), servo motor (107) and tension sensor (206) are all electrically connected to the control box (301).

7. The automatic paper advancing device for aerosol measurement according to claim 1, wherein: A filter paper support mesh (207) is provided between the supports (204).

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