Screw air compressor for chemical industry

Abstract

The utility model relates to the technical field of air compressors, and particularly discloses a chemical screw air compressor which comprises a main machine body, supporting plates are movably installed on the two sides of the main machine body, supporting columns are movably installed on the two sides of the main machine body, an electric box is movably installed on the tops of the supporting columns, and a shell is movably installed on the right side of the electric box. A filter pipe is fixedly mounted at one end of the main body close to the shell. Air enters the filter pipe from the hemispherical filter screen on the surface of the connecting block, the connecting block is in threaded connection with the top of the filter pipe, so that disassembly is convenient, a filter element is conveniently taken out for replacement when the connecting block is opened, air enters the air return pipe from the air outlet pipe and is guided into the filter pipe through the air return valve, and the air is blown upwards from the bottom of the filter element, so that the clamping plate is reset; the spring in the round hole groove drives the vertical rod to shake, dust on the surface of the hemispherical filter screen is impacted through shaking of the vertical rod and blown away by blown-out gas, the service life can be prolonged, the replacement frequency of the filter element is reduced, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, and in particular to a screw air compressor for chemical applications. Background Technology

[0002] An air compressor is a machine used to compress gas, increase gas pressure, or transport gas. Air compressors have a wide range of applications, spanning almost every field, including chemical, defense, science and technology, and civilian use. There are many types of air compressors, including screw air compressors (which are further divided into twin-screw and single-screw air compressors), reciprocating air compressors, centrifugal compressors, and scroll air compressors. Among these, screw air compressors are currently the most widely used.

[0003] Screw air compressors, using pre-configured sets, require only a single power supply and compressed air connection, and feature a built-in cooling system, greatly simplifying installation. Screw air compressors consistently provide high-quality compressed air to various industries due to their high efficiency, maintenance-free operation, and high reliability. For example, Chinese utility model patent application CN202320224767.7 discloses a screw air compressor including a sealed chamber containing a compressor, a drive motor, an air filter, an oil separator, an air delivery pipe, a noise reduction mechanism, a cooling mechanism, an air inlet, and a hinged door. During compressor operation, the noise generated is reduced by the noise reduction mechanism within the sealed chamber. This noise reduction mechanism, located on the inner wall of the compressor, reduces the propagation of noise and minimizes noise pollution.

[0004] However, in existing screw air compressors, air must pass through a filter element before entering the main unit. The filter element needs to be frequently disassembled and cleaned to prevent it from being clogged by dust. This frequent disassembly is time-consuming and labor-intensive, reducing the convenience of use. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a chemical screw air compressor that addresses the above-mentioned defects of the prior art, thereby solving the problem that the existing screw air compressors require frequent disassembly, which is time-consuming and labor-intensive and reduces the convenience of use.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A screw air compressor for chemical applications includes a main body, with support plates movably mounted on both sides of the main body, support columns movably mounted on both sides of the main body, an electrical box movably mounted on the top of the support columns, a housing movably mounted on the right side of the electrical box, a filter tube fixedly mounted on one end of the main body near the housing, a fixing ring fixedly mounted on the inner wall of the filter tube, a filter element movably mounted above the fixing ring, and a movable ring movably mounted above the filter element.

[0008] Preferably, a return air pipe is fixedly connected to the side of the filter tube near the electrical box, and a return air valve is installed inside the return air pipe.

[0009] Preferably, the top of the filter tube is threaded with a connecting block, the inside of the connecting block is provided with a plurality of hemispherical filter screens, a toggle block is fixedly connected to one side of the top of the connecting block, and limit grooves are evenly formed on the inner wall of the connecting block.

[0010] Preferably, a section of the return air pipe away from the filter pipe is fixedly connected to an air outlet pipe, and an air outlet valve is provided inside the air outlet pipe.

[0011] Preferably, the connecting block is flexibly connected to a snap-fit ​​plate through an opening limiting groove. The snap-fit ​​plate has a circular hole groove inside corresponding to the hemispherical filter screen. A spring is installed inside the circular hole groove, and a vertical rod is fixedly installed on the middle part of the spring near the side of the connecting block.

[0012] By adopting the above technical solution, the chemical screw air compressor provided by this utility model has the following beneficial effects:

[0013] 1. In this utility model, the main body is installed on the adjacent side of the support plate, and the support plate is used to support and fix it. Support columns are movably installed on both sides of the surface of the main body, which makes it easy to install the electrical box on the support columns and facilitate disassembly and maintenance. During normal operation, the air outlet valve is opened and the air return valve is closed. Air enters the filter tube from the hemispherical filter screen on the surface of the connecting block. The connecting block and the top of the filter tube are threaded together for easy disassembly, and the filter element can be taken out for replacement when the connecting block is opened.

[0014] 2. In this utility model, when gas enters the filter tube, the snap-fit ​​plate is subjected to downward pressure from the air pressure. The snap-fit ​​plate moves horizontally downward in the limiting groove. At this time, the upright and the hemispherical filter screen are no longer in contact. After the air passes through the filter element, it enters the interior of the main body. The filter element is installed above the fixed ring and then fixed by the movable ring. The electrical box drives the main body to work, compresses the gas, and discharges it from the outlet pipe. When the filter element needs to be self-cleaned, the outlet valve is closed and the return valve is opened. The air enters the return pipe from the outlet pipe and is introduced into the filter tube by the return valve. It blows upward from the bottom of the filter element, causing the snap-fit ​​plate to reset. The spring in the round hole groove drives the upright to shake. The shaking of the upright hits the dust on the surface of the hemispherical filter screen and is blown away by the air. This can increase the service life, prevent the filter element from being blocked by dust, reduce the number of filter element replacements, and reduce the labor intensity of the workers. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0017] Figure 3 This is a three-dimensional cross-sectional view of the filter tube of this utility model;

[0018] Figure 4 This is a schematic diagram showing the disassembled structure of the connecting block and the snap-fit ​​plate of this utility model.

[0019] In the diagram: 1. Main body; 2. Support plate; 3. Support column; 4. Electrical box; 5. Outer shell; 6. Filter tube; 7. Return air pipe; 8. Return air valve; 9. Exit air pipe; 10. Exit air valve; 11. Fixing ring; 12. Filter element; 13. Movable ring; 14. Connecting block; 15. Hemispherical filter screen; 16. Actuating block; 17. Limiting groove; 18. Snap-fit ​​plate; 19. Round hole groove; 20. Spring; 21. Upright pole. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] Example 1

[0024] like Figures 1 to 4 As shown, this utility model provides a technical solution: a screw compressor, including a main body 1, with support plates 2 movably installed on both sides of the main body 1, support columns 3 movably installed on both sides of the main body 1, an electrical box 4 movably installed on the top of the support columns 3, a housing 5 movably installed on the right side of the electrical box 4, a filter tube 6 fixedly installed at one end of the main body 1 near the housing 5, a return air pipe 7 fixedly connected to the side of the filter tube 6 near the electrical box 4, a return air valve 8 provided inside the return air pipe 7, and an outlet air pipe 9 fixedly connected to the section of the return air pipe 7 away from the filter tube 6, an outlet air valve 10 provided inside the outlet air pipe 9.

[0025] In this embodiment, the main body 1 is installed on the adjacent side of the support plate 2, and the support plate 2 is used for support and fixation. Support columns 3 are movably installed on both sides of the surface of the main body 1, so that the electrical box 4 can be installed on the support columns 3 for easy disassembly and maintenance. During normal operation, the air outlet valve 10 is opened and the air return valve 8 is closed. Air enters the filter tube 6 from the hemispherical filter screen on the surface of the connecting block 14. The connecting block 14 is threaded to the top of the filter tube 6 for easy disassembly, and the filter element 12 can be taken out for replacement when the connecting block 14 is opened.

[0026] Example 2

[0027] like Figures 1 to 4As shown, a fixing ring 11 is fixedly installed on the inner wall of the filter tube 6, a filter element 12 is movably installed above the fixing ring 11, a movable ring 13 is movably installed above the filter element 12, a connecting block 14 is threaded to the top of the filter tube 6, a plurality of hemispherical filter screens 15 are arranged inside the connecting block 14, a toggle block 16 is fixedly connected to one side of the top of the connecting block 14, a limiting groove 17 is evenly opened on the inner wall of the connecting block 14, and a snap-fit ​​plate 18 is flexibly connected to the connecting block 14 through the limiting groove 17. A circular hole groove 19 is opened inside the snap-fit ​​plate 18 corresponding to the hemispherical filter screen 15, a spring 20 is arranged inside the circular hole groove 19, and a vertical rod 21 is fixedly installed on the side of the spring 20 near the connecting block 14.

[0028] In this embodiment, when the snap-fit ​​plate 18 is subjected to downward pressure when gas enters the filter tube 6, the snap-fit ​​plate 18 moves horizontally downward in the limiting groove 17. At this time, the upright 21 and the hemispherical filter screen 15 are no longer in contact. After the air passes through the filter element 12, it enters the interior of the main body 1. The filter element 12 is installed above the fixing ring 11 and then fixed by the movable ring 13. The electrical box 4 drives the main body 1 to work, compresses the gas and discharges it from the outlet pipe 9. When the filter element 12 needs to be self-cleaned, the outlet valve 10 is closed and the return valve 8 is opened. The air enters the return pipe 7 from the outlet pipe 9 and is introduced into the filter tube 6 by the return valve 8. It blows upward from the bottom of the filter element 12, causing the snap-fit ​​plate 18 to reset. The spring 20 in the round hole groove 19 drives the upright 21 to shake. The shaking of the upright 21 hits the dust on the surface of the hemispherical filter screen 15 and is blown away by the air. This can increase the service life, reduce the number of times the filter element 12 needs to be replaced, and reduce the labor intensity of the workers.

[0029] Working Principle: During use, the main body 1 is installed on the adjacent side of the support plate 2, which provides support and fixation. Support columns 3 are movably installed on both sides of the main body 1, facilitating the installation of the electrical box 4 above the support columns 3 for easy disassembly and maintenance. During normal operation, the exhaust valve 10 is opened and the return valve 8 is closed. Air enters the filter tube 6 through the hemispherical filter screen on the surface of the connecting block 14. The connecting block 14 is threaded to the top of the filter tube 6 for easy disassembly. When gas enters the filter tube 6, the snap-fit ​​plate 18 is subjected to downward pressure, causing it to move horizontally downward within the limiting groove 17. After being filtered by the filter element 12, the air enters the interior of the main body 1. The filter element 12 is then installed on the fixing ring 1. The filter element 12 is then fixed above the main body 1 using the movable ring 13, making it easy to remove and replace the filter element 12 when the connecting block 14 is opened. The electrical box 4 drives the main body 1 to work, compressing the gas and discharging it from the outlet pipe 9. When the filter element 12 needs to be self-cleaned, the outlet valve 10 is closed and the return valve 8 is opened. Air enters the return pipe 7 from the outlet pipe 9 and is introduced into the filter tube 6 through the return valve 8. It blows upward from the bottom of the filter element 12, causing the snap plate 18 to reset. The spring 20 in the round hole groove 19 drives the upright 21 to shake. The shaking of the upright 21 hits the dust on the surface of the hemispherical filter screen 15 and is blown away by the air, thereby preventing the filter element 12 from being blocked by dust, reducing the number of times the filter element 12 needs to be replaced, and reducing the labor intensity of the staff.

[0030] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A screw air compressor for chemical applications, comprising a main body, characterized in that: Support plates are movably mounted on both sides of the main body, and support columns are movably mounted on both sides of the main body. An electrical box is movably mounted on the top of the support columns. A housing is movably mounted on the right side of the electrical box. A filter tube is fixedly mounted on one end of the main body near the housing. A fixing ring is fixedly mounted on the inner wall of the filter tube. A filter element is movably mounted above the fixing ring. A movable ring is movably mounted above the filter element.

2. The chemical screw air compressor according to claim 1, characterized in that: The filter tube is fixedly connected to a return air pipe on the side near the electrical box, and a return air valve is installed inside the return air pipe.

3. The chemical screw air compressor according to claim 2, characterized in that: The top of the filter tube is threaded with a connecting block, and the inside of the connecting block is provided with multiple hemispherical filter screens. A toggle block is fixedly connected to one side of the top of the connecting block, and limit grooves are evenly opened on the inner wall of the connecting block.

4. The chemical screw air compressor according to claim 3, characterized in that: The section of the return air pipe away from the filter pipe is fixedly connected to an air outlet pipe, and an air outlet valve is installed inside the air outlet pipe.

5. The chemical screw air compressor according to claim 3, characterized in that: The connecting block is flexibly connected to a snap-fit ​​plate through a limiting groove. The snap-fit ​​plate has a circular slot corresponding to the hemispherical filter screen inside. A spring is installed inside the circular slot, and a vertical rod is fixedly installed on the middle part of the spring near the connecting block.

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