Pneumatic unblocking device

Abstract

The utility model belongs to the technical field of unblocking devices for material conveying, and aims to provide a pneumatic unblocking device which comprises a nozzle assembly, and the rear end of the nozzle assembly is connected with a first double-tight connector; the rear end of the first double-tightening connector is connected with a check valve, and the rear end of the check valve is connected with a second double-tightening connector. The rear end of the second double-tightening connector is connected with a pulse valve, and the rear end of the pulse valve is connected with a third double-tightening connector. The third double-tightening connector is connected with a ball valve, and the rear end of the ball valve is connected with an air inlet pipe. The front end of the nozzle assembly is connected with a material conveying pipeline. The device has the characteristics of compact structure, good unblocking effect, good nozzle wear resistance, simplicity in control and the like, and can be widely applied to the technical field of material conveying pipeline cleaning in the energy fields of electric power, mines, metallurgy, chemical engineering and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of clogging removal devices for material conveying, and specifically, it is a pneumatic clogging removal device. Background Technique

[0002] In recent years, with the stable development of energy industries such as electric power, chemical industry, and coal mines, the conveying systems of these energy fields have also begun to be widely studied and improved. Currently, it is known that due to the large moisture content and fineness in coal slime, it is easy to occur plate clogging at the transfer station of the coal conveying system. To prevent the plate clogging of the raw coal bunker, the clogging problem of the raw coal bunker has been solved by installing a rotating scraper for clogging removal in the raw coal bunker. However, the clogging at the feed pipe of the coal slime conveying system at the transfer station is becoming more and more serious. After each coal feeding is completed, a large amount of plate coal will accumulate in the feed pipe, and it requires multiple staff to carry out mechanical cleaning, which is very time-consuming and laborious. Moreover, when cleaning, the staff need to go down into the feed pipe for cleaning, which has a relatively large safety hazard.

[0003] The patent application number "202022662273.6" introduces a matrix pulse pneumatic clogging removal system, including an air source device, a pulse device, a clogging removal device, and a control device. The air source device is connected to the pulse device, the pulse device is connected to the clogging removal device, and the clogging removal device and the control device are connected. The clogging removal device includes multiple groups of jet devices and connecting pipes, which solves the problem of difficult cleaning of the clogging in the feed pipe and reduces the risk of manual cleaning. However, the control structure of this patent is complex, the air force generated during the cleaning process is in a fan-shaped structure, the clogging removal area is small, the cleaning effect is limited, and at the same time, the used pipelines and nozzles are not wear-resistant and have a short service life. Therefore, the structure of the existing pneumatic clogging removal device for material conveying in the energy field needs to be further improved. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a pneumatic clogging removal device, which has the characteristics of compact structure, good clogging removal effect, good wear resistance of the nozzle, and simple control. It can be widely applied to the technical field of cleaning of material conveying pipelines in energy fields such as electric power, mines, metallurgy, and chemical industry.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions: A pneumatic clogging removal device includes a nozzle assembly, and the rear end of the nozzle assembly is connected to a first double-ferrule fitting; the rear end of the first double-ferrule fitting is connected to a check valve, the rear end of the check valve is connected to a second double-ferrule fitting; the rear end of the second double-ferrule fitting is connected to a pulse valve, the rear end of the pulse valve is connected to a third double-ferrule fitting; the third double-ferrule fitting is connected to a ball valve, and the rear end of the ball valve is connected to an air inlet pipe; the front end of the nozzle assembly is connected to a material conveying pipeline.

[0006] As an improvement, the nozzle assembly is a hexagonal or octagonal arc structure, and the arc angle is 60° - 120°.

[0007] As an improvement, a hollow sleeve is provided inside the nozzle assembly. The hollow sleeve is connected to a three-jaw bracket, and the three-jaw bracket is fixedly connected to a pressure spring; a spring gasket is provided at the front end of the pressure spring; a core plug is provided at the bottom of the nozzle assembly, and a fastening nut is provided outside. The fastening nut is connected to a clamp flange.

[0008] As an improvement, the inside of the nozzle assembly is lined with wear-resistant ceramic sheets.

[0009] As an improvement, the wear-resistant ceramic sheets are made of alumina, silicon carbide or ZTA ceramics, and are fixed to the internal pipeline of the nozzle assembly by bolt column welding.

[0010] As an improvement, the first double-tight joint, the second double-tight joint, and the third double-tight joint are all external thread same-direction structures.

[0011] As an improvement, the check valve is a one-way check valve and can adjust the outlet air pressure.

[0012] As an improvement, the ball valve is a one-way copper ball valve with a size of 2 inches to 4 inches.

[0013] As an improvement, the pulse valve is connected to a PLC control system, and can loosen and clear blockages in the material conveying pipeline regularly and quantitatively.

[0014] As an improvement, a wear-resistant ceramic pipe is provided inside the air inlet pipe. The wear-resistant ceramic pipe is a pipeline structure made of integral alumina material, and the thickness is 2 to 8 mm.

[0015] The beneficial effects obtained by the present utility model are as follows: a pneumatic blockage clearing device has the characteristics of compact structure, good blockage clearing effect, good wear resistance of the nozzle, and simple control, etc. By adopting a hexagonal or octagonal arc-shaped nozzle structure design, a water wave cleaning circle is formed under the action of pressure self-regulation, effectively increasing the blockage clearing area inside the conveying pipeline, improving the blockage clearing efficiency, and at the same time making the appearance more beautiful; by combining the pulse valve and the check valve, it is possible to avoid the backflow of the air flow due to the pipeline resistance during the cleaning process and damage the pulse valve. At the same time, the PLC is used to control the working frequency and working air volume of the pulse valve, and the slag in the material conveying pipeline can be loosened and blocked regularly and quantitatively to achieve precise blockage clearing; in addition, by setting wear-resistant ceramic linings inside the nozzle assembly and the air inlet pipe, the wear resistance and corrosion resistance of the nozzle assembly and the air inlet pipe are effectively improved, thereby improving the overall service life of the blockage clearing device.

[0016] The pneumatic plug cleaning device of the present utility model utilizes an air compressor to pressurize air or a high-pressure gas storage tank to be transported through a gas pipe to a hexagonal arc nozzle assembly. Under the control of a PLC connected to an electromagnetic pulse valve, the plug cleaning interval time and the plug cleaning air volume can be set according to actual needs, and then instantaneously ejected under the self-regulation of the hexagonal arc nozzle, forming a cleaning range circle like water waves to timely loosen and remove the materials accumulated and blocked in the equipment. The material conveying pipeline prone to material blockage can make the material flow in the equipment smoother under the continuous plug cleaning of the pneumatic plug cleaning device, preventing the accumulation and blockage of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the pneumatic plug cleaning device of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the octagonal arc nozzle of the pneumatic plug cleaning device of the present utility model.

[0019] In the figure: 1, nozzle assembly; 2, first double-joint; 3, check valve; 4, second double-joint; 5, pulse valve; 6, third double-joint; 7, ball valve; 8, intake pipe; 11, hollow sleeve; 12, three-jaw bracket; 13, pressure spring; 14, spring gasket; 15, core shaft plug; 16, fastening nut; 17, clamp flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes the present utility model in detail in conjunction with the drawings and embodiments: As Figure 1 shown, a pneumatic plug cleaning device of the present utility model includes a nozzle assembly 1, and the rear end of the nozzle assembly 1 is connected to a first double-joint 2; the rear end of the first double-joint 2 is connected to a check valve 3, and the rear end of the check valve 3 is connected to a second double-joint 4; the rear end of the second double-joint 4 is connected to a pulse valve 5, and the rear end of the pulse valve 5 is connected to a third double-joint 6; the third double-joint 6 is connected to a ball valve 7, and the rear end of the ball valve 7 is connected to an intake pipe 8; the front end of the nozzle assembly 1 is connected to a material conveying pipeline.

[0021] Furthermore, the nozzle assembly 1 is of a hexagonal or octagonal arc structure, and the arc angle is 60° to 120°, preferably 80° to 100°, so that an air flow can form a cleaning range circle like water waves during transportation, improving the cleaning area; specifically, as Figure 2As shown, a hollow sleeve 11 is provided inside the nozzle assembly 1, and the hollow sleeve 11 is connected to a three-claw bracket 12, and the three-claw bracket 12 is fixedly connected to a pressure spring 13; a spring clamp 14 is provided at the front end of the pressure spring 13; a core shaft plug 15 is provided at the bottom of the nozzle assembly 1, and a fastening nut 16 is provided on the outside, and the fastening nut 16 is connected to a clamp flange 17; more specifically, the nozzle assembly 1 is lined with a wear-resistant ceramic sheet, and the wear-resistant ceramic sheet is made of alumina, silicon carbide or ZTA ceramics, preferably alumina ceramics, and specifically preferably 95 alumina ceramics, and the wear-resistant ceramic sheet is fixed to the internal pipeline of the nozzle assembly 1 by bolt column welding, thereby avoiding the wear-resistant ceramic sheet from falling off, thereby improving the wear resistance and service life of the nozzle assembly.

[0022] Furthermore, the first double tightening joint 2, the second double tightening joint 4, and the third double tightening joint 6 are all external thread same-direction structures; specifically, the first double tightening joint 2, the second double tightening joint 4, and the third double tightening joint 6 are connected by positive threads, and high-temperature sealant is applied to the threads during connection to prevent the sealant from falling off and leaking when the compressed gas is high in summer.

[0023] Furthermore, the check valve 3 is a one-way check valve, and the air outlet pressure can be adjusted; specifically, the check valve is provided with a flow regulating switch, which can adjust the delivery air volume control to achieve cleaning control of different intensities.

[0024] Furthermore, the ball valve 7 is a one-way copper ball valve with a size of 2 inches to 4 inches, preferably 2 to 2.5 inches, which is convenient for controlling the air intake.

[0025] Furthermore, the pulse valve 5 is connected to a PLC control system, which can loosen and clear the slag inside the material conveying pipeline in a timely and quantitative manner, thereby achieving precise clearing, improving clearing efficiency, and avoiding energy waste due to excessive gas volume.

[0026] Furthermore, a wear-resistant ceramic tube is provided inside the air intake pipe 8. The wear-resistant ceramic tube is an integral alumina pipe structure with a thickness of 2 to 8 mm, preferably 5 to 7 mm, thereby ensuring that the wear-resistant ceramic tube has high strength and service life.

[0027] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A pneumatic blockage clearing device, characterized in that: The nozzle assembly (1) comprises a nozzle assembly (1), wherein the rear end of the nozzle assembly (1) is connected to a first double-tight joint (2); the rear end of the first double-tight joint (2) is connected to a check valve (3), and the rear end of the check valve (3) is connected to a second double-tight joint (4); the rear end of the second double-tight joint (4) is connected to a pulse valve (5), and the rear end of the pulse valve (5) is connected to a third double-tight joint (6); the third double-tight joint (6) is connected to a ball valve (7), and the rear end of the ball valve (7) is connected to an air intake pipe (8); and the front end of the nozzle assembly (1) is connected to a material conveying pipeline.

2. The pneumatic blockage clearing device according to claim 1, characterized in that: The nozzle assembly (1) is a hexagonal or octagonal arc structure, and the arc angle is 60° to 120°.

3. The pneumatic blockage clearing device according to claim 2, characterized in that: A hollow sleeve (11) is provided inside the nozzle assembly (1), the hollow sleeve (11) is connected to a three-claw bracket (12), and the three-claw bracket (12) is fixedly connected to a pressure spring (13); a spring clamping pad (14) is provided at the front end of the pressure spring (13); a core shaft plug (15) is provided at the bottom of the nozzle assembly (1), and a fastening nut (16) is provided on the outside, and the fastening nut (16) is connected to a clamp flange (17).

4. The pneumatic blockage clearing device according to claim 2, characterized in that: The nozzle assembly (1) is lined with wear-resistant ceramic sheets.

5. The pneumatic blockage clearing device according to claim 4, characterized in that: The wear-resistant ceramic sheet is made of alumina, silicon carbide or ZTA ceramics and is fixed to the internal pipeline of the nozzle assembly (1) by means of bolt column welding.

6. The pneumatic blockage clearing device according to claim 1, characterized in that: The first double-tight joint (2), the second double-tight joint (4), and the third double-tight joint (6) are all structures with external threads in the same direction.

7. The pneumatic blockage clearing device according to claim 1, characterized in that: The check valve (3) is a one-way check valve and can adjust the gas outlet pressure.

8. The pneumatic blockage clearing device according to claim 1, characterized in that: The ball valve (7) is a one-way copper ball valve with a size of 2 inches to 4 inches.

9. The pneumatic blockage clearing device according to claim 1, characterized in that: The pulse valve (5) is connected to a PLC control system and can loosen and clear the slag inside the material conveying pipeline in a timely and quantitative manner.

10. The pneumatic blockage clearing device according to claim 1, characterized in that: A wear-resistant ceramic tube is arranged inside the air intake pipe (8); the wear-resistant ceramic tube is an integral alumina pipe structure and has a thickness of 2 to 8 mm.

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