A double screw air compressor

Abstract

This utility model discloses a twin-screw air compressor, which includes a casing. Two support plates are fixedly connected to the lower surface of the casing. A base plate is slidably connected inside each of the two support plates. An electric push rod is fixedly connected to the inner top surface of each of the two support plates. A push rod is fixedly connected to the output end of each of the two electric push rods. A sliding column is fixedly connected to both ends of the side of each of the two push rods. A support rod is rotatably connected to the two opposite inner walls of the two support plates. The side surface of the sliding column is slidably connected to the inner wall of the support rod. Two sliding frames are slidably connected to the upper surface of each of the two base plates. The end of the support rod away from the inner wall of the support plate is rotatably connected to the side of the sliding frame. Two first mounting plates are fixedly connected to the lower surface of each of the two base plates. This facilitates the extension and retraction of the casters, making the device easy to transport and preventing movement of the casters during use. The casters are fixed by a single fixing bolt, which facilitates the disassembly and installation of the casters.

Description

Technical Field

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

[0002] A twin-screw air compressor is a device used to compress gas. Dry twin-screw air compressors do not use any lubricant and rely on precision manufacturing processes, such as rotor surface coatings and ceramic bearings, to reduce friction.

[0003] Existing twin-screw air compressors use casters for movement, but after being transported to a designated location, the casters cannot be retracted. During use, the casters cause the device to move, which is inconvenient. Furthermore, the casters are often fixed with multiple bolts, making disassembly inconvenient. This invention provides a device that facilitates the movement of the device by workers, ensures stable use after being moved to a designated location, and makes it easy for workers to install and remove the casters. Utility Model Content

[0004] The purpose of this utility model is to provide a twin-screw air compressor that solves the problems of the inability to retract the casters, the movement of the device due to the casters during use, which is not conducive to the use of the device, and the inconvenience of disassembly due to the need to fix the casters with multiple bolts.

[0005] To achieve the above objectives, a twin-screw air compressor is provided, comprising a casing, two support plates fixedly connected to the lower surface of the casing, a base plate slidably connected inside the two support plates, an electric push rod fixedly connected to the inner top surface of the two support plates, a push rod fixedly connected to the output end of the two electric push rods, a sliding column fixedly connected to both ends of the side of the two push rods, a support rod rotatably connected to the two opposite inner walls of the two support plates, the side surface of the sliding column slidably connected to the inner wall of the support rod, and two sliding frames slidably connected to the upper surface of the two base plates, the end of the support rod away from the inner wall of the support plate rotatably connected to the side of the sliding frame, facilitating the extension and retraction of the casters, facilitating the transportation of the device and preventing movement of the casters during use;

[0006] Two first mounting plates are fixedly connected to the lower surfaces of both base plates. The lower surfaces of the first mounting plates are attached to second mounting plates. Two insert plates are fixedly connected to the upper surfaces of the second mounting plates. The insert plates are inserted into the interior of the first mounting plates. Limiting plates are fitted into the sides of the first mounting plates. Two limiting rods are fixedly connected to the sides of the limiting plates. One end of each limiting rod passes through the insert plate and is slidably connected to the interior of the first mounting plate. A rotating ring is fixedly connected inside the limiting plate. A fixing bolt is rotatably connected inside the rotating ring. The outside of the fixing bolt is threadedly connected to the inside of the first mounting plate. The caster is fixed by a single fixing bolt, which facilitates the disassembly and installation of the caster.

[0007] The two support plates are symmetrically arranged, and the other side of the push rod is slidably connected to the inner wall of the support plate, so that the support plate can support the device.

[0008] An air inlet flange is fixedly connected to the upper surface of the chassis, and an air outlet flange is fixedly connected to the lower surface of the chassis, facilitating air intake and exhaust.

[0009] A motor is fixedly connected to the side of the chassis. A male screw is fixedly connected to the output end of the motor. The end of the male screw away from the motor is rotatably connected to the inner wall of the chassis. A female screw is rotatably connected inside the chassis. The side surfaces of the male screw and the female screw mesh with each other. A first synchronous gear is fixedly connected to the outside of the male screw. A second synchronous gear is fixedly connected to the outside of the female screw. The side surfaces of the first synchronous gear and the second synchronous gear mesh with each other to facilitate air compression.

[0010] Two first mounting plates are symmetrically arranged, and universal wheels are fixedly connected to the lower surface of the second mounting plate to facilitate the movement of the device.

[0011] A sliding groove is provided through the side of the support rod to facilitate the sliding column to slide inside the groove and to facilitate lifting the support rod.

[0012] The sliding column has a T-shaped cross-section to prevent it from falling off during sliding and to ensure stability during sliding.

[0013] The above-mentioned solution has the following beneficial effects:

[0014] 1. When the device needs to be moved, the electric push rod is activated to drive the push rod downward, thereby driving the sliding column to move synchronously. This facilitates the rotation of the support rod, which in turn facilitates the downward movement of the base plate. The sliding frame ensures smooth rotation of the support rod and allows for the extension and retraction of the casters, facilitating the transportation of the device and preventing movement of the casters during use.

[0015] 2. When it is necessary to replace the casters, the limiting plate and limiting rod can be pulled out by removing the fixing bolts, thereby releasing the limiting rod from the plate. The rotating ring can prevent the limiting plate from rotating with the fixing bolts, making it convenient to fix the casters with a single fixing bolt, and facilitating the disassembly and installation of the casters. Attached Figure Description

[0016] Figure 1 This is a perspective view of a twin-screw air compressor according to the present invention.

[0017] Figure 2 This is a top sectional view of a twin-screw air compressor according to this utility model.

[0018] Figure 3 This is a cross-sectional view of the first mounting plate of a twin-screw air compressor according to this utility model.

[0019] Figure 4 This is a side sectional view of a twin-screw air compressor according to the present invention.

[0020] Figure 5 This is an internal structural diagram of a support plate for a twin-screw air compressor according to this utility model.

[0021] Figure 6 This is a perspective view of the sliding column of a twin-screw air compressor according to this utility model.

[0022] Legend:

[0023] 1. Chassis; 2. Motor; 3. Sliding frame; 4. Inlet flange; 6. Support plate; 7. Female screw; 8. Male screw; 9. First synchronous gear; 10. Second synchronous gear; 11. First mounting plate; 12. Limiting rod; 13. Insert plate; 14. Limiting plate; 15. Rotating ring; 16. Fixing bolt; 17. Outlet flange; 18. Base plate; 19. Electric push rod; 20. Support rod; 21. Sliding column; 22. Second mounting plate; 23. Caster wheel; 24. Push rod. Detailed Implementation

[0024] Reference Figure 1-6 This utility model discloses a twin-screw air compressor, which includes a casing 1. Two support plates 6 are fixedly connected to the lower surface of the casing 1 for support. A base plate 18 is slidably connected inside the two support plates 6 for mounting casters 23. Electric push rods 19 are fixedly connected to the inner top surfaces of the two support plates 6. The electric push rods 19 are used to push the casters 23 to extend and retract. Push rods 24 are fixedly connected to the output ends of the two electric push rods 19. Sliding columns 21 are fixedly connected to both ends of the sides of the two push rods 24. The sliding columns 21 are used to slide inside the support rods 20, so that the push rods 24 push the support rods 20 to rotate. The support rods 20 are rotatably connected to the two opposite inner walls of the two support plates 6. The support rods 20 are used to push the base plate 18 to extend or retract. The side surface of the sliding column 21 is slidably connected to the inner wall of the support rod 20. Two sliding frames 3 are slidably connected to the upper surfaces of the two base plates 18. The end of the support rod 20 away from the inner wall of the support plate 6 is rotatably connected to the side of the sliding frame 3.

[0025] Two first mounting plates 11 are fixedly connected to the lower surfaces of the two base plates 18. The lower surfaces of the first mounting plates 11 are attached to the second mounting plates 22. Two insert plates 13 are fixedly connected to the upper surfaces of the second mounting plates 22. The insert plates 13 are inserted into the interior of the first mounting plates 11. A limiting plate 14 is fitted into the side of the first mounting plates 11. Two limiting rods 12 are fixedly connected to the side of the limiting plate 14. The limiting rods 12 are used to limit the insert plates 13. One end of the limiting rod 12 passes through the insert plate 13 and is slidably connected to the interior of the first mounting plate 11. A rotating ring 15 is fixedly connected inside the limiting plate 14. A fixing bolt 16 is rotatably connected inside the rotating ring 15. The fixing bolt 16 is used to fix the limiting plate 14. The outside of the fixing bolt 16 is threadedly connected to the inside of the first mounting plate 11.

[0026] Two support plates 6 are symmetrically arranged, and the other side of the push rod 24 is slidably connected to the inner wall of the support plate 6, so that the support plate 6 supports the device when the caster wheel 23 is retracted.

[0027] An air inlet flange 4 is fixedly connected to the upper surface of the chassis 1, and an air outlet flange 17 is fixedly connected to the lower surface of the chassis 1. Air is introduced through the air inlet flange 4 and discharged through the air outlet flange 17.

[0028] A motor 2 is fixedly connected to the side of the chassis 1. A male screw 8 is fixedly connected to the output end of the motor 2. The end of the male screw 8 away from the motor 2 is rotatably connected to the inner wall of the chassis 1. A female screw 7 is rotatably connected inside the chassis 1. The side surface of the male screw 8 meshes with the side surface of the female screw 7. A first synchronous gear 9 is fixedly connected to the outside of the male screw 8. A second synchronous gear 10 is fixedly connected to the outside of the female screw 7. The side surface of the first synchronous gear 9 meshes with the side surface of the second synchronous gear 10. The motor 2 drives the male screw 8 to rotate. Through the meshing of the first synchronous gear 9 and the second synchronous gear 10, the male screw 8 and the female screw 7 rotate synchronously.

[0029] Two first mounting plates 11 are symmetrically arranged, and a caster wheel 23 is fixedly connected to the lower surface of the second mounting plate 22. The caster wheel 23 is installed through the first mounting plate 11 and moves through the caster wheel 23.

[0030] A groove is cut through the side of the strut 20 to facilitate the installation of the sliding column 21.

[0031] The sliding column 21 has a T-shaped cross-section, which allows the sliding column 21 to slide stably inside the support rod 20.

[0032] In use, air is introduced through the air inlet flange 4, and the motor 2 is started to drive the male screw 8 to rotate. Through the meshing of the first synchronous gear 9 and the second synchronous gear 10, the female screw 7 moves synchronously with the male screw 8. When it is necessary to move the device, the electric push rod 19 is started by the switch to drive the push rod 24 and the sliding column 21 to move downward, thereby pushing the support rod 20 to push the base plate 18 and the caster wheel 23 to extend. This facilitates the extension and retraction of the caster wheel 23, making it convenient for the staff to move the device and also convenient to fix the device. If the caster wheel 23 is damaged, the staff can remove the fixing bolt 16 to drive the limit plate 14 and the limit rod 12, which can easily release the limit on the second mounting plate 22. The installation and removal of the caster wheel 23 can be completed with a single bolt, and the installation and removal are relatively convenient.

Claims

1. A twin screw air compressor characterized by, Includes a chassis (1), with two support plates (6) fixedly connected to the lower surface of the chassis (1), and a base plate (18) slidably connected inside the two support plates (6). Electric push rods (19) are fixedly connected to the inner top surfaces of the two support plates (6), and push rods (24) are fixedly connected to the output ends of the two electric push rods (19). Sliding columns (21) are fixedly connected to both ends of the sides of the two push rods (24). Support rods (20) are rotatably connected to the two opposite inner walls of the two support plates (6). The side surface of the sliding column (21) is slidably connected to the inner wall of the support rod (20). Two sliding frames (3) are slidably connected to the upper surfaces of the two base plates (18). The end of the support rod (20) away from the inner wall of the support plate (6) is rotatably connected to the side of the sliding frame (3). Two first mounting plates (11) are fixedly connected to the lower surfaces of the two base plates (18). The lower surfaces of the first mounting plates (11) are attached to the second mounting plates (22). Two insert plates (13) are fixedly connected to the upper surfaces of the second mounting plates (22). The insert plates (13) are inserted into the interior of the first mounting plates (11). The side of the first mounting plates (11) is fitted with a limiting plate (14). The side of the limiting plate (14) is fixedly connected with two limiting rods (12). One end of the limiting rod (12) passes through the insert plate (13) and is slidably connected to the interior of the first mounting plate (11). The interior of the limiting plate (14) is fixedly connected with a rotating ring (15). The interior of the rotating ring (15) is rotatably connected with a fixing bolt (16). The exterior of the fixing bolt (16) is threadedly connected to the interior of the first mounting plate (11).

2. A twin screw air compressor as claimed in claim 1 wherein, The two support plates (6) are symmetrically arranged, and the other side of the push rod (24) is slidably connected to the inner wall of the support plate (6).

3. A twin screw air compressor as defined in claim 1, wherein An air inlet flange (4) is fixedly connected to the upper surface of the chassis (1), and an air outlet flange (17) is fixedly connected to the lower surface of the chassis (1).

4. A twin screw air compressor as defined in claim 1, wherein The side of the chassis (1) is fixedly connected to a motor (2), the output end of the motor (2) is fixedly connected to a male screw (8), the end of the male screw (8) away from the motor (2) is rotatably connected to the inner wall of the chassis (1), the inside of the chassis (1) is rotatably connected to a female screw (7), the side surface of the male screw (8) is meshed with the side surface of the female screw (7), the outside of the male screw (8) is fixedly connected to a first synchronous gear (9), the outside of the female screw (7) is fixedly connected to a second synchronous gear (10), the side of the first synchronous gear (9) is meshed with the side of the second synchronous gear (10).

5. A twin screw air compressor as defined in claim 1, wherein Two first mounting plates (11) are symmetrically arranged, and a caster wheel (23) is fixedly connected to the lower surface of the second mounting plate (22).

6. A twin screw air compressor as defined in claim 1, wherein, The support rod (20) has a through groove on its side.

7. A twin screw air compressor as defined in claim 1, wherein The sliding column (21) has a T-shaped cross-section.

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