Dust generating device

Abstract

The utility model provides a dust generating device, which belongs to the technical field of environment-friendly detection equipment and comprises a powder barrel, an air inlet pipe and an exhaust pipe. The powder barrel is used for containing powder; the air inlet pipe is connected to the powder barrel; one end of the air inlet pipe is communicated with an air source, and the other end of the air inlet pipe faces powder in the powder barrel; the exhaust pipe is communicated with the powder barrel; wherein the powder barrel is provided with a powder adding structure; when air flow is introduced into the powder barrel, powder can be discharged from the exhaust pipe along with the air flow. The air inlet pipe and the exhaust pipe are both connected with electromagnetic valves. Through the arrangement, the dust generation amount can be controlled by controlling the flow speed of the airflow.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental protection detection equipment, and particularly relates to a dust generating device. Background Art

[0002] A particulate matter monitor can monitor the concentration of particulate matter; before the particulate matter monitor leaves the factory, it is necessary to test the particulate matter detector to determine whether the particulate matter monitor meets the factory requirements. In the prior art, a Chinese utility model with the application number CN202321428070.8 discloses a dust generating device, which includes a box body, a first pipeline, a second pipeline and a fan; inside the box body, there is a supporting platform for the combustion of combustibles; one end of the first pipeline is communicated with the top of the box body; there is a preset angle between the second pipeline and the first pipeline; the other end of the first pipeline is communicated with the second pipeline; the fan is arranged at one end of the second pipeline for providing air flow into the second pipeline; wherein, the second pipeline is provided with a connection port communicated with the air inlets of the particulate matter monitor to be tested and the standard particulate matter monitor; the first pipeline is provided with an air inlet for balancing the air pressure inside the box body.

[0003] The above dust generating device simulates a dust environment through the particles generated after the combustion of combustibles, so as to complete the factory test of the particulate matter monitor; however, the above dust generating method depends on the combustion characteristics of the combustibles and cannot adjust the amount of dust generated in real time. Summary of the Utility Model

[0004] An embodiment of the utility model provides a dust generating device, aiming to solve the technical problem that the dust generating device in the prior art cannot adjust the amount of dust generated in real time.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A dust generating device is provided, including:

[0007] A powder cylinder for containing powder;

[0008] An air inlet pipe connected to the powder cylinder; one end of the air inlet pipe is used for communicating with a gas source, and the other end of the air inlet pipe faces the powder in the powder cylinder;

[0009] An exhaust pipe communicated with the powder cylinder;

[0010] Wherein, the powder cylinder is provided with a powder adding structure; when air flow is introduced into the powder cylinder, the powder can be discharged from the exhaust pipe together with the air flow.

[0011] In a possible implementation manner, the inner end of the air inlet pipe is longer than the inner end of the exhaust pipe.

[0012] In a possible implementation, a feeding port is provided on the side wall of the powder barrel, and the powder adding structure includes:

[0013] A box body, connected to one side of the powder barrel;

[0014] A feeding pipeline, passing through the feeding port; the feeding pipeline is communicated with the box body;

[0015] A sealing plate, slidably arranged in the box body; a material storage space is formed between the sealing plate and the top of the box body, and when the sealing plate is located above the feeding pipeline, the sealing plate can seal the feeding pipeline;

[0016] A telescopic driving member, connected to the box body; the telescopic end of the telescopic driving member passes through the box body and is connected to the sealing plate to drive the sealing plate to slide in the box body.

[0017] In a possible implementation, the telescopic driving member includes a driving cylinder, and the driving cylinder is fixed at the bottom of the box body; the piston rod of the driving cylinder passes through the box body and is connected to the sealing plate; a ventilation hole is provided at the top of the box body, and a filter cotton is provided at the position of the ventilation hole of the box body.

[0018] In a possible implementation, an opening is provided at the top of the box body, and the powder adding structure further includes a cover plate covering the top of the box body.

[0019] In a possible implementation, a feeding port is provided at the top of the powder barrel, and a cover body is covered at the position of the feeding port of the powder barrel; the cover body is connected to the powder barrel by bolts; both the air inlet pipe and the exhaust pipe are arranged on the cover body.

[0020] In a possible implementation, a square hole is provided on the powder barrel along its axial direction, and a light-transmitting plate is fixedly arranged in the square hole.

[0021] In a possible implementation, a mixing structure is provided in the powder barrel, and the mixing structure is used to evenly place the powder deposited in the powder barrel.

[0022] In a possible implementation, the mixing structure includes:

[0023] A rotating disk, rotatably arranged in the powder barrel, and blades are provided on the top of the rotating disk;

[0024] A rotary driving member, connected to the bottom of the powder barrel; the rotating shaft of the rotary driving member passes through the powder barrel and is connected to the rotating disk.

[0025] In a possible implementation, the mixing structure includes a vibration motor, and the vibration motor is connected to the powder barrel.

[0026] A dust generating device provided by the present utility model, compared with the prior art, puts powder into the powder barrel, passes air flow into the powder barrel through the air inlet pipe, the air flow can blow up the powder, so that the blown-up powder can be discharged from the exhaust pipe together with the air flow, completing the process of dust generation; when it is necessary to adjust the concentration of dust, increasing the flow rate of the air flow can blow up more powder, thereby increasing the concentration of dust generation. The powder can be added into the powder barrel through the powder adding structure to ensure the amount of powder in the powder barrel. Through the above settings of the present application, the amount of dust generation can be controlled by controlling the flow rate of the air flow. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of a dust generating device provided by an embodiment of the present utility model;

[0028] Figure 2 It is a cross-sectional view of a dust generating device provided by an embodiment of the present utility model;

[0029] Figure 3 It is a schematic diagram of a rotating disk part of a dust generating device provided by an embodiment of the present utility model.

[0030] Description of the reference numerals: 1. Powder barrel; 11. Feeding port; 12. Cover body; 13. Square hole; 14. Transparent plate; 2. Air inlet pipe; 3. Exhaust pipe; 4. Powder adding structure; 41. Box body; 411. Vent hole; 42. Feeding pipeline; 43. Sealing plate; 44. Telescopic driving member; 45. Cover plate; 5. Mixing structure; 51. Rotating disk; 52. Rotating driving member; 53. Blade. Detailed Embodiments

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0032] Please refer to Figures 1 to 3, a dust generating device provided by the present utility model will be described below. The dust generating device includes a powder barrel 1, an air inlet pipe 2, and an exhaust pipe 3; the powder barrel 1 is used to contain powder; the air inlet pipe 2 is connected to the powder barrel 1; one end of the air inlet pipe 2 is used to communicate with an air source, and the other end of the air inlet pipe 2 faces the powder in the powder barrel 1; the exhaust pipe 3 is communicated with the powder barrel 1; wherein, the powder barrel 1 is provided with a powder adding structure 4; when air flow is introduced into the powder barrel 1, the powder can follow the air flow and be discharged from the exhaust pipe 3 together. Solenoid valves are connected to both the air inlet pipe 2 and the exhaust pipe 3.

[0033] Compared with the prior art, for the dust generating device provided by the present utility model, the powder is put into the powder barrel 1, and air flow is introduced into the powder barrel 1 through the air inlet pipe 2. The air flow can blow up the powder, so that the blown-up powder can be discharged from the exhaust pipe 3 together with the air flow, completing the process of dust generation; when it is necessary to adjust the concentration of the dust, increasing the flow rate of the air flow can blow up more powder, thereby increasing the concentration of dust generation. The powder can be added into the powder barrel 1 through the powder adding structure 4 to ensure the amount of powder in the powder barrel 1. Through the above settings of the present application, the amount of dust generation can be controlled by controlling the flow rate of the air flow.

[0034] It should be noted that the other end of the exhaust pipe 3 can be connected to a suction fan, and the intake speed and the exhaust speed are kept consistent to reduce the occurrence of negative pressure in the powder barrel 1.

[0035] In some embodiments, as Figures 1 to 3 shown, the inner end of the air inlet pipe 2 is longer than the inner end of the exhaust pipe 3. Therefore, the air flow can first blow towards the powder. After blowing up the powder, the powder and the air flow are discharged from the exhaust pipe 3 together, completing the process of dust generation.

[0036] In some embodiments, as Figures 1 to 3 shown, the side wall of the powder barrel 1 is provided with a feeding port 11. The powder adding structure 4 includes a box body 41, a feeding pipe 42, a sealing plate 43, and a telescopic driving member 44; the box body 41 is connected to one side of the powder barrel 1; the feeding pipe 42 penetrates through the feeding port 11; the feeding pipe 42 is communicated with the box body 41; the sealing plate 43 is slidably arranged in the box body 41; the space between the sealing plate 43 and the top of the box body 41 is a material storage space. When the sealing plate 43 is located above the feeding pipe 42, the sealing plate 43 can close the feeding pipe 42; the telescopic driving member 44 is connected to the box body 41; the telescopic end of the telescopic driving member 44 passes through the box body 41 and is connected to the sealing plate 43 to drive the sealing plate 43 to slide in the box body 41.

[0037] It should be noted that during normal operation, the sealing plate 43 is located above the feed pipe 42; when it is necessary to add powder to the powder cylinder 1, the telescopic end of the telescopic driving member 44 drives the sealing plate 43 to slide downward, so that the sealing plate 43 slides to the lower side of the feed pipe 42. At this time, the powder in the box body 41 can flow into the powder cylinder 1. When adding powder, the intake pipe 2 can be closed, and the exhaust fan on the exhaust pipe 3 works, which is beneficial to the powder in the box body 41 falling into the powder cylinder 1.

[0038] In some embodiments, as Figures 1 to 3 shown, the telescopic driving member 44 includes a driving cylinder, and the driving cylinder is fixed to the bottom of the box body 41; the piston rod of the driving cylinder passes through the box body 41 and is connected to the sealing plate 43; the top of the box body 41 has a ventilation hole 411, and the box body 41 has a filter cotton at the position of the ventilation hole 411.

[0039] It should be noted that by providing the ventilation hole 411 at the top of the box body 41, the air pressure inside the box body 41 can be balanced; by providing the filter cotton at the position of the ventilation hole 411, external impurities can be reduced from entering the box body 41, and the powder in the box body 41 can also be reduced from flying out through the ventilation hole 411.

[0040] In some embodiments, as Figures 1 to 3 shown, the top of the box body 41 has an opening, and the powder adding structure 4 further includes a cover plate 45 covering the top of the box body 41.

[0041] It should be noted that the bottom of the cover plate 45 has a rubber plug, and the rubber plug can be inserted into the box body 41 and contact the inner peripheral wall of the box body 41; through the above setting, the cover plate 45 can be buckled on the box body 41. The ventilation hole 411 is provided on the cover plate 45, and the rubber plug has a through hole aligned with the ventilation hole 411.

[0042] In some embodiments, as Figures 1 to 3 shown, the top of the powder cylinder 1 has a feeding port, and a cover body 12 is covered at the position of the feeding port of the powder cylinder 1; the cover body 12 is connected to the powder cylinder 1 by bolts; the intake pipe 2 and the exhaust pipe 3 are both provided on the cover body 12.

[0043] It should be noted that by providing the cover body 12 on the powder cylinder 1 and connecting the cover body 12 to the powder cylinder 1 by bolts, it is convenient to disassemble the cover body 12; when the powder cylinder 1 is used for the first time, the cover body 12 needs to be opened and powder needs to be added to the powder cylinder 1. When the powder cylinder 1 needs to be cleaned, the cover body 12 also needs to be opened.

[0044] In some embodiments, as Figures 1 to 3 shown, the powder cylinder 1 has a square hole 13 arranged along its axial direction, and a light-transmitting plate 14 is fixedly arranged in the square hole 13.

[0045] It should be noted that by providing the square hole 13 and the light-transmitting plate 14, it is convenient for the operator to observe the powder in the powder cylinder 1, and thus it is convenient to supplement the powder in the powder cylinder 1 in a timely manner.

[0046] In some embodiments, as Figures 1 to 3 shown, a mixing structure 5 is provided in the powder cylinder 1. The mixing structure 5 is used to evenly place the powder deposited in the powder cylinder 1. The mixing structure 5 includes a rotating disk 51 and a rotation driving member 52. The rotating disk 51 is rotatably arranged in the powder cylinder 1, and the top of the rotating disk 51 is provided with blades 53. The rotation driving member 52 is connected to the bottom of the powder cylinder 1. The rotation shaft of the rotation driving member 52 passes through the powder cylinder 1 and is connected to the rotating disk 51.

[0047] It should be noted that the rotation driving member 52 can be a driving motor. The output shaft of the driving motor can drive the rotating disk 51 to rotate, and the blades 53 rotate with the rotating disk 51, thereby stirring the powder in the powder cylinder 1 and making the powder deposited in the powder cylinder 1 evenly distributed.

[0048] In some embodiments, as Figures 1 to 3 shown, the mixing structure 5 includes a vibration motor, and the vibration motor is connected to the powder cylinder 1.

[0049] It should be noted that by providing a vibration motor (not shown in the figure) on the powder cylinder 1, the powder in the powder cylinder 1 can also be evenly distributed. Under the impact of the air flow, the situation of pits appearing in the deposited powder can be reduced, and thus more powder can be blown up by the air flow to realize the dust generation process.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dust generating device, characterized in that: include: A powder barrel, used for containing powder; An air inlet pipe is connected to the powder barrel; one end of the air inlet pipe is used to communicate with an air source, and the other end of the air inlet pipe faces the powder in the powder barrel; An exhaust pipe, connected to the powder barrel; The powder barrel is provided with a powder adding structure; when airflow is introduced into the powder barrel, the powder can be discharged from the exhaust pipe along with the airflow.

2. A dust generating device according to claim 1, characterized in that: The inner end of the air intake pipe is longer than the inner end of the exhaust pipe.

3. A dust generating device according to claim 1, characterized in that: The side wall of the powder barrel is provided with a feeding port, and the powder adding structure comprises: A box body connected to one side of the powder barrel; A feed pipe is provided through the feed port; the feed pipe is connected to the box body; A sealing plate is slidably disposed in the box body; a material storage space is provided between the sealing plate and the top of the box body, and when the sealing plate is located above the feed pipe, the sealing plate can close the feed pipe; A telescopic driving member is connected to the box body; a telescopic end of the telescopic driving member passes through the box body and is connected to the sealing plate to drive the sealing plate to slide in the box body.

4. A dust generating device as claimed in claim 3, characterized in that: The telescopic driving member includes a driving cylinder, which is fixed at the bottom of the box body; the piston rod of the driving cylinder passes through the box body and is connected to the sealing plate; the top of the box body is provided with an air hole, and the box body is provided with filter cotton at the position of the air hole.

5. A dust generating device as claimed in claim 3, characterized in that: The top of the box body is provided with an opening, and the powder adding structure further comprises a cover plate covering the top of the box body.

6. A dust generating device according to claim 1, characterized in that: The top of the powder barrel is provided with a feeding port, and the powder barrel is covered with a cover body at the position of the feeding port; the cover body is connected to the powder barrel by bolts; the air inlet pipe and the exhaust pipe are both arranged on the cover body.

7. A dust generating device according to claim 1, characterized in that: The powder barrel is provided with a square hole arranged along the axial direction thereof, and a light-transmitting plate is fixedly arranged in the square hole.

8. A dust generating device as claimed in claim 1, characterized in that: A mixing structure is provided in the powder barrel, and the mixing structure is used to evenly place the powder deposited in the powder barrel.

9. A dust generating device as claimed in claim 8, characterized in that: The mixing structure comprises: A rotating disk is rotatably disposed in the powder barrel, and a paddle is provided on the top of the rotating disk; A rotary drive member is connected to the bottom of the powder barrel; a rotary shaft of the rotary drive member passes through the powder barrel and is connected to the rotary disk.

10. A dust generating device according to claim 8, characterized in that: The mixing structure comprises a vibration motor, and the vibration motor is connected to the powder barrel.

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