An anti-interference coal powder particle size monitoring device

Abstract

This utility model relates to a monitoring device, belonging to the field of coal powder monitoring technology, specifically an anti-interference coal powder particle size monitoring device. It includes a protective shell, within which a monitoring element and a monitoring tube are respectively installed. The detection end of the monitoring element is located inside the monitoring tube. It also includes a vacuum pump located on one side of the protective shell, with a cleaning pipe fixedly connected to the outlet end of the vacuum pump. The end of the cleaning pipe furthest from the vacuum pump is connected to the monitoring tube. An air treatment assembly includes a filter box and a purification box located on one side of the vacuum pump. One side of the purification box is connected to the inlet end of the vacuum pump via a pipe. This utility model can activate the vacuum pump after each monitoring operation, using treated air to flush the coal powder air inside the monitoring tube, ensuring no coal powder residue remains and guaranteeing the accuracy of the monitoring results. This solves the problem of interference from the external environment and residual impurities after each monitoring operation.

Description

Technical Field

[0001] This utility model relates to the field of coal powder monitoring technology, and in particular to an anti-interference coal powder particle size monitoring device. Background Technology

[0002] Whether in coal mining or in the process of turning coal into pulverized coal through a coal mill, it is necessary to monitor the data of pulverized coal to ensure production safety and prevent accidents such as dust explosions.

[0003] In the prior art, such as the Chinese patent with publication number CN222461266U, a coal powder particle size monitoring device for underground mining includes: a main component, which includes an explosion-proof shell, a connecting column injection-molded and connected to the lower end of the explosion-proof shell, and a protective cover screwed to the lower end of the connecting column; an anti-clogging component, which includes a three-way pipe screwed to the lower end of the protective cover, a support frame screwed to the upper section of the three-way pipe, a servo motor screwed to the lower surface of the support frame, a rotating shaft rotatably connected to the servo motor, a brush screwed to the rotating shaft, a solenoid valve screwed to the lower section of the three-way pipe, and a transparent storage box screwed to the lower end of the three-way pipe; and a prompting component, which includes a vibration motor screwed to the bottom surface of the transparent storage box. This addresses the problem that monitoring equipment often lacks an effective self-cleaning mechanism, and the detection port is prone to clogging after prolonged operation, affecting monitoring accuracy and shortening the instrument's lifespan.

[0004] However, this patent still has shortcomings. Since the environment in the mine is inherently a high-dust environment, the equipment is installed underground and is completely exposed to the mine environment during use. The detection port of the monitoring equipment is easily covered by dust, causing interference. In addition, the brush used by the equipment is also prone to leaving residues during the cleaning process, affecting the actual monitoring effect. Therefore, an anti-interference coal powder particle size monitoring device is proposed to solve the above problems. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model proposes an anti-interference coal powder particle size monitoring device. By incorporating a vacuum pump, a filter box, and a purification box, the vacuum pump can be activated after each monitoring session to flush the coal powder air inside the monitoring tube with treated air, ensuring no coal powder residue remains and guaranteeing the accuracy of the monitoring results. Simultaneously, the protective casing protects the monitoring elements and extends their service life.

[0006] The technical solution to achieve the purpose of this utility model is: an anti-interference coal powder particle size monitoring device, including a protective shell, a monitoring element and a monitoring tube respectively arranged inside the protective shell, the detection end of the monitoring element being located inside the monitoring tube, and further comprising;

[0007] A vacuum pump is located on one side of the protective housing. A cleaning pipe is fixedly connected to the outlet end of the vacuum pump. The end of the cleaning pipe away from the vacuum pump is connected to a monitoring pipe. A cleaning solenoid valve is installed on the cleaning pipe.

[0008] An air handling unit, comprising a filter box and a dust removal box disposed on one side of a vacuum pump, wherein one side of the dust removal box is connected to the air inlet of the vacuum pump via a pipe.

[0009] In some embodiments, a data acquisition tube is fixedly connected to the lower surface of the monitoring tube, and the end of the data acquisition tube away from the monitoring tube extends to the outside of the protective housing. A data acquisition solenoid valve is provided on the data acquisition tube.

[0010] In some embodiments, a discharge pipe is fixedly connected to the lower surface of the monitoring tube, the bottom end of the discharge pipe extends to the outside of the protective housing, and a discharge solenoid valve is provided on the discharge pipe.

[0011] In some embodiments, the air treatment assembly includes a support mesh slidably connected to the inner wall of the filter box, an intermediate dividing mesh fixedly connected to the inner bottom wall of the support mesh, a PP cotton layer and an activated carbon adsorption layer respectively provided on both sides of the intermediate dividing mesh, one side of the filter box being connected to a debris removal box via a pipe, and an air intake pipe being provided on the other side of the filter box.

[0012] In some embodiments, the inner wall of the dust removal box is provided with electrostatic dust removal rods, and the inner bottom wall of the dust removal box is slidably connected with a dust collection box.

[0013] In some embodiments, a protective door is rotatably connected to the front of the protective housing, and a top cover is provided on the upper surface of both the filter box and the impurity removal box.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] This invention, through its air handling components and vacuum pump, ensures that after a monitoring cycle is completed, the acquisition solenoid valve is closed and the vacuum pump is activated. The vacuum pump draws in higher-level air from the air intake pipe, which passes through a PP cotton layer, an activated carbon adsorption layer, and an electrostatic dust removal rod. Then, the cleaning solenoid valve opens, allowing this purified air to enter the monitoring tube and flush and replace the sample air that has already been monitored. Finally, the exhaust solenoid valve opens, and as the vacuum pump continues to pump air in, the flushing air and any remaining impurities in the monitoring tube are discharged through the exhaust pipe. The combined action of the vacuum pump and multiple solenoid valves ensures monitoring accuracy and prevents residue from interfering with subsequent monitoring by cleaning the monitoring tube after each monitoring cycle, further guaranteeing monitoring precision.

[0016] This solves the problem of interference with monitoring results caused by the external environment and residual impurities after each monitoring. Attached Figure Description

[0017] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the main structure provided in one embodiment of the present invention;

[0019] Figure 2 This is a frontal planar structural schematic diagram provided in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the exploded structure of the filter box provided in one embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the impurity removal box (explosion) structure provided in one embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Protective housing; 2. Monitoring element; 3. Monitoring tube; 4. Vacuum pump; 5. Cleaning pipe; 6. Air handling unit; 601. Filter box; 602. Impurity removal box; 603. Support mesh; 604. Intermediate dividing mesh; 605. PP cotton layer; 606. Activated carbon adsorption layer; 607. Air intake pipe; 608. Electrostatic dust removal bar; 609. Dust collection box; 7. Collection pipe; 8. Collection solenoid valve; 9. Discharge pipe; 10. Discharge solenoid valve; 11. Protective door; 12. Top cover; 13. Cleaning solenoid valve. Detailed Implementation

[0024] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0025] This utility model provides an improved anti-interference coal powder particle size monitoring device. The technical solution of this utility model is as follows:

[0026] like Figure 1 As shown, an anti-interference coal powder particle size monitoring device includes a protective shell 1, within which a monitoring element 2 and a monitoring tube 3 are respectively disposed. The detection end of the monitoring element 2 is located inside the monitoring tube 3. The monitoring element 2 used in this application is no different from that in the published documents, i.e., it is prior art. The specific structure will not be described further in this application.

[0027] Vacuum pump 4 is located on one side of protective housing 1. The outlet end of vacuum pump 4 is fixedly connected to cleaning pipe 5. The end of cleaning pipe 5 away from vacuum pump 4 is connected to monitoring pipe 3. Cleaning solenoid valve 13 is installed on cleaning pipe 5. Cleaning solenoid valve 13 is a one-way valve. The flow direction of cleaning solenoid valve 13 is from cleaning pipe 5 to monitoring pipe 3.

[0028] To ensure that no new coal dust particles are introduced during cleaning, the air used for cleaning is pre-purified by the air treatment assembly 6 before the air is introduced into the vacuum pump 4. The air treatment assembly 6 includes a filter box 601 and a debris removal box 602 located on one side of the vacuum pump 4. One side of the debris removal box 602 is connected to the air inlet of the vacuum pump 4 through a pipe.

[0029] like Figure 2 As shown, in one embodiment, a collection tube 7 is fixedly connected to the lower surface of the monitoring tube 3. The end of the collection tube 7 away from the monitoring tube 3 extends to the outside of the protective housing 1. A collection solenoid valve 8 is provided on the collection tube 7. The collection solenoid valve 8 is a one-way valve. The flow direction of the collection solenoid valve 8 is from the collection tube 7 to the monitoring tube 3.

[0030] In one embodiment, a discharge pipe 9 is fixedly connected to the lower surface of the monitoring pipe 3. The bottom end of the discharge pipe 9 extends to the outside of the protective housing 1. A discharge solenoid valve 10 is provided on the discharge pipe 9. The discharge solenoid valve 10 is a one-way valve. The flow direction of the discharge solenoid valve 10 is from the monitoring pipe 3 to the discharge pipe 9.

[0031] like Figure 3 As shown, in one embodiment, the air treatment component 6 includes a support mesh 603 slidably connected to the inner wall of the filter box 601. A middle dividing mesh 604 is fixedly connected to the inner bottom wall of the support mesh 603. Both the support mesh 603 and the middle dividing mesh 604 are provided with through holes for gas flow. A PP cotton layer 605 and an activated carbon adsorption layer 606 are respectively provided on both sides of the middle dividing mesh 604. One side of the filter box 601 is connected to the impurity removal box 602 through a pipe. An air intake pipe 607 is provided on the other side of the filter box 601. Considering that the underground environment of the mine is relatively humid, when using it, the PP cotton layer 605 needs to be located on the left side of the middle dividing mesh 604, that is, the side that comes into contact with the air first. This can reduce the air humidity in advance and filter out some large coal dust particles, reducing the loss of activated carbon. In addition, the air intake pipe 607 is higher, so large impurities will be in a lower space due to their heavier mass, reducing the purification burden.

[0032] like Figure 4As shown, in one embodiment, the inner wall of the dust removal box 602 is provided with an electrostatic dust removal rod 608, and the inner bottom wall of the dust removal box 602 is slidably connected with a dust collection box 609. The electrostatic dust removal rod 608 can further purify the air and eliminate static electricity in the air so that it will not be attracted to the detection port, making it convenient for cleaning.

[0033] like Figure 1 As shown, in one embodiment, a protective door 11 is rotatably connected to the front of the protective housing 1, and a top cover 12 is provided on the upper surface of both the filter box 601 and the impurity removal box 602.

[0034] The specific working method is as follows: When the anti-interference coal powder particle size monitoring equipment is in use, after connecting and installing the monitoring element 2 and the monitoring tube 3, it can be used normally. When monitoring is required, the acquisition solenoid valve 8 is opened, and the acquisition tube 7 collects external air into the monitoring tube 3. The monitoring element 2 analyzes the air. After the analysis is completed, the acquisition solenoid valve 8 is closed, and the vacuum pump 4 is turned on. The vacuum pump 4 draws in higher-level air from the air intake pipe 607. After passing through the PP cotton layer 605, the activated carbon adsorption layer 606, and the electrostatic dust removal rod 608, the cleaning solenoid valve 13 is opened. This purified air enters the monitoring tube 3 to flush and replace the sample air that has already been monitored. The discharge solenoid valve 10 is then opened. With the vacuum pump 4 continuously pumping air in, the air used for flushing and the impurities remaining in the monitoring tube 3 will be discharged through the discharge pipe 9. Through the combined action of the vacuum pump 4 and multiple solenoid valves, the accuracy of the monitoring can be guaranteed, and the residue in the monitoring tube 3 can be cleaned after monitoring to prevent the residue from interfering with the next monitoring, further ensuring the accuracy of the monitoring.

[0035] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. An anti-interference coal dust particle size monitoring device comprising a protective shell (1), characterized in that: The protective housing (1) is provided with a monitoring element (2) and a monitoring tube (3), the detection end of the monitoring element (2) is located inside the monitoring tube (3), and also includes: Vacuum pump (4), the vacuum pump (4) is located on one side of the protective shell (1), the outlet end of the vacuum pump (4) is fixedly connected to a cleaning pipe (5), the end of the cleaning pipe (5) away from the vacuum pump (4) is connected to the monitoring pipe (3), and a cleaning solenoid valve (13) is provided on the cleaning pipe (5); An air handling unit (6) includes a filter box (601) and a debris removal box (602) disposed on one side of a vacuum pump (4).

2. The anti-interference coal powder particle size monitoring device according to claim 1, characterized in that: One side of the impurity removal box (602) is connected to the air inlet of the vacuum pump (4) via a pipe.

3. The anti-interference coal powder particle size monitoring device according to claim 1, characterized in that: The monitoring tube (3) is fixedly connected to the lower surface of the acquisition tube (7), and the end of the acquisition tube (7) away from the monitoring tube (3) extends to the outside of the protective shell (1).

4. The anti-interference coal powder particle size monitoring device according to claim 3, characterized in that: The acquisition tube (7) is equipped with an acquisition solenoid valve (8).

5. The anti-interference coal powder particle size monitoring device according to claim 1, characterized in that: The lower surface of the monitoring tube (3) is fixedly connected to the discharge tube (9), and the bottom end of the discharge tube (9) extends to the outside of the protective shell (1).

6. The anti-interference coal powder particle size monitoring device according to claim 5, characterized in that: A discharge solenoid valve (10) is installed on the discharge pipe (9).

7. The anti-interference coal powder particle size monitoring device according to claim 1, characterized in that: The air treatment assembly (6) includes a support mesh (603) that is slidably connected to the inner wall of the filter box (601). An intermediate dividing mesh (604) is fixedly connected to the inner bottom wall of the support mesh (603). A PP cotton layer (605) and an activated carbon adsorption layer (606) are respectively provided on both sides of the intermediate dividing mesh (604). One side of the filter box (601) is connected to the impurity removal box (602) through a pipe.

8. The anti-interference coal powder particle size monitoring device according to claim 1, characterized in that: An air intake pipe (607) is provided on the other side of the filter box (601).

9. The anti-interference coal powder particle size monitoring device according to claim 1, characterized in that: The inner wall of the dust removal box (602) is provided with an electrostatic dust removal rod (608), and the inner bottom wall of the dust removal box (602) is slidably connected with a dust collection box (609).

10. The anti-interference coal powder particle size monitoring device according to claim 1, characterized in that: The protective shell (1) is rotatably connected to a protective door (11), and the upper surfaces of the filter box (601) and the impurity removal box (602) are both provided with top covers (12).

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