Pulse dust removal system of numerical control plasma cutting equipment

Abstract

The utility model relates to the technical field of pollution control equipment and facilities, and particularly discloses a pulse dust removal system of numerical control plasma cutting equipment. The system comprises a pulse dust removal device and a follow-up gas collection device, and the follow-up gas collection device collects cutting waste gas to the pulse dust removal device through a PVC pipe. The system is ingenious in design, complete in function, small in size and flexible to use, can be used in cooperation with cutting equipment in a high-integrating-degree mode, guarantees that cutting waste gas is efficiently collected, prevents smoke dust from escaping into the surrounding environment and affecting the health of operators, and is simple, efficient, reasonable in cost input, easy to assemble and prepare and high in practicability. And the dust removal system has the advantages of high-temperature resistance, flame retardance, overheating protection, follow-up gas collection, flexibility in use, small size, high-efficiency dust removal and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of pollution prevention and control equipment, and particularly relates to a pulse dust removal system for a numerical control plasma cutting equipment. Background Art

[0002] Thermal cutting refers to a method of melting or burning and separating materials by using concentrated heat energy. Thermal cutting is widely used in the industrial sector for metal material blanking, component processing, waste and scrap disassembly, as well as installation and demolition. Currently, there are mainly four types of thermal cutting technologies widely used in China. According to the types of heat energy used, they are divided into: plasma arc cutting, laser cutting, arc cutting, and gas cutting. With the development of modern mechanical processing industry, the requirements for cutting quality, precision, and production efficiency are constantly increasing. Numerical control thermal cutting machines with low production costs and high intelligence are increasingly widely used. The basic structure of most of its equipment is divided into four parts: a mobile cutting trolley (machine head), a material laying platform (bed), a heat source providing unit (plasma arc, laser, arc, combustible mixture), and a control system. Thermal cutting operations will generate a large amount of dust-containing flue gas, which not only has a relatively prominent impact on the environment, but also harms the health of workers.

[0003] Currently, in terms of the technology for preventing and controlling the pollution of thermal cutting waste gas in workshop factories, there are generally two technical methods: wet treatment and dry treatment. The wet treatment method has many limited conditions and is not suitable for use in winter in the north. The dry treatment method is to add a set of dust collection (gas collection) devices to the cutting work platform and directly transport the collected dust to the dust filtration and purification equipment, and then discharge it after reaching the standard after treatment. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a pulse dust removal system for a numerical control plasma cutting equipment in view of the above deficiencies existing in the prior art. The design of a follow-up type gas collection is made to be the same width as the mobile cutting trolley (machine head), ensuring efficient collection of cutting waste gas at any time. At the same time, according to the characteristics and requirements of industry enterprises, the volume of the equipment is reduced as much as possible, and the difficulty of assembly and preparation is reduced, which is convenient for flexible use and self-assembly by machining or electromechanical installation enterprises, further reducing the production and operation costs of enterprises and improving the ability of enterprises to fulfill their main responsibilities for environmental protection.

[0005] To solve the above problems, the technical solution of the present utility model is as follows: A pulse dust removal system for a numerical control plasma cutting device, the system includes a pulse dust removal device and a follow-up gas collection device, and the follow-up gas collection device collects cutting waste gas to the pulse dust removal device through a PVC pipe; the follow-up gas collection device is integrally strip-shaped, and the follow-up gas collection device includes a cross-flow fan motor and a cross-flow impeller, and the cross-flow impeller rotates driven by the cross-flow fan motor to complete the collection of waste gas; the cross-flow fan motor and the cross-flow impeller are externally wrapped with a shell cover; the pulse dust removal device is integrally a cabinet structure, placed in the cabinet of the pulse dust removal device, and internally from top to bottom are an equipment compartment, a back-blowing execution compartment, a waste gas filtration compartment, and a dust collection compartment. A high-power centrifugal fan is provided in the equipment compartment to suck dust-containing waste gas and discharge the filtered gas through an air outlet from the pulse dust removal device; a pressure-bearing steam drum is also provided in the equipment compartment, and compressed air is transmitted to the pressure-bearing steam drum through an air compressor, and then the start and stop of the pressure-bearing steam drum to release air and back-blow the dust removal filter element are controlled by an electromagnetic pulse air valve; a back-blowing nozzle is provided in the back-blowing execution compartment, and the back-blowing nozzle is in a conical structure; a dust removal filter element is provided in the waste gas filtration compartment, and a dust-containing waste gas inlet is opened on the inner wall of the waste gas filtration compartment, and an axial flow fan is provided at the dust-containing waste gas inlet to pressurize the dust-containing waste gas and prevent the backflow of the dust-containing waste gas; the bottom of the dust collection compartment is a dust collection drawer for collecting dust and facilitating dumping.

[0006] One end of the shell cover is connected to the PVC pipe through a PVC hose interface.

[0007] The equipment compartment and the back-blowing execution compartment are separated by a partition A.

[0008] The back-blowing execution compartment and the waste gas filtration compartment are separated by a partition B.

[0009] Sound-absorbing cotton is installed on the inner wall of the equipment compartment to reduce the noise during equipment operation, and heat dissipation holes are opened on the top wall of the equipment compartment.

[0010] The pressure-bearing steam drum delivers the released gas to the back-blowing nozzle through a gas guide pipe.

[0011] The cabinet of the pulse dust removal device includes a cabinet door, and a pulse circuit control board is provided on the cabinet door to control the start and stop of the electromagnetic pulse air valve.

[0012] The number of the dust removal filter elements is four.

[0013] The air outlet is connected to an external exhaust air pipe.

[0014] The remarkable effect of the present utility model lies in that: for the pulse dust removal system of a numerical control plasma cutting device described in the present utility model, the dust-containing waste gas is efficiently collected through a follow-up gas collection device, and the dust-containing gas is filtered through a pulse dust removal device. During the filtering stage, the electromagnetic pulse air valve is controlled by a pulse circuit control board to release gas, and the filter element is periodically cleaned to ensure the filtering efficiency of the filter element. This system is ingeniously designed, has complete functions, is small in size, and is flexible in use. It can be used in high compatibility with the cutting device to ensure the efficient collection of cutting waste gas and avoid the escape of soot into the surrounding environment, which may affect the health of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0016] Figure 2 It is a schematic structural diagram of a pulse dust removal device of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0017] Figure 3 It is a schematic structural diagram of a follow-up gas collection device of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0018] Figure 4 It is a front view of the appearance of a pulse dust removal device of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0019] Figure 5 It is a front view of the interior of a pulse dust removal device of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0020] Figure 6 It is a top view of the equipment cabin of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0021] Figure 7 It is a top view of the backflush execution cabin of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0022] Figure 8 It is a top view of a follow-up gas collection device of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0023] Figure 9 It is a sectional view of a follow-up gas collection device of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0024] Figure 10 It is a manufacturing flow chart of a shell cover and a cabinet body of a pulse dust removal system of a numerical control plasma cutting device described in the present utility model;

[0025] In the figure: 1. Pulse dust removal device; 2. Cutting trolley; 3. Follow-up gas collection device; 4. Exhaust air duct; 5. Batching platform; 6. PVC pipe; 11. Pulse dust removal device cabinet; 12. High-power centrifugal fan; 13. Electromagnetic pulse air valve; 14. Pressure-bearing steam drum; 15. Air duct; 16. Air compressor; 17. Reverse blow nozzle; 18. Dust removal filter element; 19. Axial flow fan; 110. Dust collection drawer; 111. Pulse circuit control board; 112. Partition A; 113. Partition B; 114. Equipment cabin; 115. Reverse blow execution cabin; 116. Exhaust gas filtration cabin; 117. Dust collection cabin; 31. Cross-flow fan motor; 32. Cross-flow impeller; 33. Housing; 34. PVC hose interface. Detailed implementation mode

[0026] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of description and simplification, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0028] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, terms such as "connection", "installation", "fixed" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] As Figure 1-9 shown, a pulse dust removal system for a numerical control plasma cutting device, the system includes a pulse dust removal device 1 and a follow-up gas collection device 3. The follow-up gas collection device 3 collects cutting waste gas to the pulse dust removal device 1 through a PVC pipe 6;

[0031] The follow-up gas collection device 3 is integrally strip-shaped. The follow-up gas collection device 3 includes a cross-flow fan motor 31 and a cross-flow impeller 32. The cross-flow impeller 32 rotates under the drive of the cross-flow fan motor 31 to complete the collection of waste gas. The cross-flow fan motor 31 and the cross-flow impeller 32 are externally wrapped with a housing 33.

[0032] The pulse dust removal device 1 is integrally of a cabinet structure and is placed inside a pulse dust removal device cabinet 11. Inside, from top to bottom, there are an equipment compartment 114, a backflush execution compartment 115, an exhaust gas filtration compartment 116, and a dust collection compartment 117.

[0033] Inside the equipment compartment 114, there is a high-power centrifugal fan 12, which is used to suck dust-containing exhaust gas and discharge the filtered gas through an air outlet from the pulse dust removal device 1. The equipment compartment 114 is also provided with a pressure-bearing steam drum 14. Compressed air is transmitted to the pressure-bearing steam drum 14 through an air compressor 16, and then the electromagnetic pulse air valve 13 controls the pressure-bearing steam drum 14 to start and stop discharging air for backflushing the dust removal filter element 18.

[0034] Inside the backflush execution compartment 115, there is a backflush nozzle 17, and the backflush nozzle 17 is of a conical structure.

[0035] Inside the exhaust gas filtration compartment 116, there is a dust removal filter element 118. An inlet for dust-containing exhaust gas is provided on the inner wall of the exhaust gas filtration compartment 116, and an axial flow fan 19 is provided at the inlet for dust-containing exhaust gas, which is used to pressurize the dust-containing exhaust gas and prevent the dust-containing exhaust gas from flowing back.

[0036] The bottom of the dust collection compartment 117 is a dust collection drawer 110, which is used to collect dust and is convenient for dumping.

[0037] The follow-up gas collection device 3 is arranged on the cutting trolley 2. The follow-up gas collection device 3 moves with the cutting trolley 2 on the laying platform 5. The lengths of the housing 33 and the cross-flow impeller 32 of the follow-up gas collection device 3 are the same as the width of the cutting trolley 2, ensuring the effective collection of cutting exhaust gas, which is collected to the pulse dust removal device 1 through a PVC pipe 6.

[0038] As an embodiment, one end of the housing 33 is connected to the PVC pipe 6 through a PVC hose interface 34.

[0039] As an embodiment, the equipment compartment 114 and the backflush execution compartment 115 are separated by a partition A 112.

[0040] As an embodiment, the backflush execution compartment 115 and the exhaust gas filtration compartment 116 are separated by a partition B 113.

[0041] As an embodiment, sound insulation cotton is installed on the inner wall of the equipment compartment 114 to reduce the noise during equipment operation, and heat dissipation holes are provided on the top wall of the equipment compartment 114.

[0042] As an embodiment, the pressure-bearing steam drum 14 delivers the released gas to the backflush nozzle 17 through the gas guide pipe 15;

[0043] As an embodiment, the cabinet body 11 of the pulse dust removal device includes a cabinet door, and a pulse circuit control board 111 is arranged on the cabinet door to control the start and stop of the electromagnetic pulse air valve 13;

[0044] As an embodiment, the number of the dust removal filters 18 is four;

[0045] As an embodiment, the air outlet is connected to the external exhaust air pipe 4 to discharge the filtered gas out of the factory building;

[0046] The dust removal process of this system is as follows: The follow-up gas collection device 3 moves together with the cutting trolley 2 to collect the dust-containing waste gas and transmits the dust-containing waste gas to the waste gas filtration chamber 116 of the pulse dust removal device 1. Due to the sudden expansion of the air flow cross-section and the action of the air flow distribution plate, a part of the large-mass dust particles in the air flow naturally settle to the dust collection drawer 110 under the action of gravity; The particles with smaller mass and finer particle size are deposited on the outer surface of the dust removal filter 18 through combined effects such as Brownian diffusion and sieving. According to the working conditions of the thermal cutting equipment, when the deposited particles reach a certain amount, the pulse interval is set through the pulse circuit control board 111, and the electromagnetic pulse air valve 13 controls the pressure-bearing steam drum 14 to release gas for backflushing the dust removal filter 18 to remove the deposited particles on the outer surface of the dust removal filter 18. After the mass of the deposited particles increases, they naturally settle to the dust collection drawer 110 again; Finally, the dust-removing and purified gas passes through the inner wall of the dust removal filter 18 and is discharged after passing through the air outlet of the high-power centrifugal fan 1.

[0047] Inspired by the above ideal embodiments based on the present invention, through the above description, relevant staff can completely make various changes and modifications within the scope not deviating from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pulse dust removal system for a numerically controlled plasma cutting device, characterized in that: The system includes a pulse dust removal device (1) and a follow-up gas collection device (3). The follow-up gas collection device (3) collects the cutting waste gas to the pulse dust removal device (1) through a PVC pipe (6). The follow-up gas collection device (3) is integrally strip-shaped. The follow-up gas collection device (3) includes a cross-flow fan motor (31) and a cross-flow impeller (32). The cross-flow impeller (32) rotates under the drive of the cross-flow fan motor (31) to complete the collection of waste gas. The cross-flow fan motor (31) and the cross-flow impeller (32) are externally wrapped with a shell cover (33). The pulse dust removal device (1) is integrally a cabinet structure and is placed in the pulse dust removal device cabinet (11). Inside, from top to bottom, there are an equipment compartment (114), a back-blowing execution compartment (115), a waste gas filtration compartment (116), and a dust collection compartment (117). A high-power centrifugal fan (12) is provided in the equipment compartment (114) to suck the dust-containing waste gas and discharge the filtered gas through the air outlet from the pulse dust removal device (1). A pressure-bearing steam drum (14) is also provided in the equipment compartment (114). Compressed air is transmitted to the pressure-bearing steam drum (14) through an air compressor (16), and then the electromagnetic pulse air valve (13) is used to control the pressure-bearing steam drum (14) to start and stop releasing air for back-blowing the dust removal filter element (18). A back-blowing nozzle (17) is provided in the back-blowing execution compartment (115), and the back-blowing nozzle (17) is in a conical structure. A dust removal filter element (18) is provided in the waste gas filtration compartment (116). An inlet for the dust-containing waste gas is opened on the inner wall of the waste gas filtration compartment (116), and an axial flow fan (19) is provided at the inlet for the dust-containing waste gas to pressurize the dust-containing waste gas and prevent the dust-containing waste gas from flowing back. The bottom of the dust collection compartment (117) is a dust collection drawer (110) for collecting dust and facilitating dumping.

2. The pulse dust removal system of a numerically controlled plasma cutting device according to claim 1, characterized in that: One end of the shell cover (33) is connected to the PVC pipe (6) through a PVC hose interface (34).

3. The pulse dust removal system of a numerical control plasma cutting device according to claim 1, characterized in that: The equipment compartment (114) is separated from the back-blowing execution compartment (115) by a partition A (112).

4. The pulse dust removal system of a numerically controlled plasma cutting device according to claim 1, wherein: The back-blowing execution compartment (115) is separated from the waste gas filtration compartment (116) by a partition B (113).

5. The pulse dust removal system of a numerical control plasma cutting device according to claim 1, characterized in that: Sound insulation cotton is installed on the inner wall of the equipment compartment (114) to reduce the noise during equipment operation, and heat dissipation holes are opened on the top wall of the equipment compartment (114).

6. The pulse dust removal system of a numerically controlled plasma cutting device according to claim 1, characterized in that: The pressure-bearing steam drum (14) delivers the released gas to the back-blowing nozzle (17) through a gas guide pipe (15).

7. The pulse dust removal system of a numerically controlled plasma cutting device according to claim 1, characterized in that: The pulse dust removal device cabinet (11) includes a cabinet door, and a pulse circuit control board (111) is provided on the cabinet door to control the start and stop of the electromagnetic pulse air valve (13).

8. The pulse dust removal system of a numerical control plasma cutting device according to claim 1, wherein: The number of the dust removal filter elements (18) is four.

9. The pulse dust removal system of a numerically controlled plasma cutting device according to claim 1, wherein: The air outlet is connected to an external exhaust air pipe (4).

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