Hollow inner hexagonal screw

Abstract

The utility model discloses a hollow inner hexagonal screw, and belongs to the technical field of hexagonal screws. A hollow inner hexagonal screw comprises a screw head provided with an inner hexagonal hole and further comprises a cylindrical connecting part fixedly connected to the lower portion of the screw head, and external threads are arranged on the lower half portion of the connecting part. A through hole is formed in the connecting part, and a plurality of reinforcing rings are fixedly connected in the through hole; the through hole is communicated with the screw head, and external air enters the compressor through the through hole; an anti-skid gasket is slidably connected to the connecting part, anti-skid lines are arranged on the two faces of the anti-skid gasket, a compression spring is fixedly connected to the anti-skid gasket, a plug is fixedly connected to the other end of the compression spring, and a hexagonal sliding rod is fixedly connected to the plug; according to the compressor, the installation process is simplified, an extra silicone tube is not needed, the situation that the silicone tube is aged and fails after being used for a long time is avoided, meanwhile, the situation that dust or particulate matter enters the through hole under the situation that the compressor is not used or stands is avoided, and the service life of the compressor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hexagonal screw technology, and in particular to a hollow internal hexagonal screw. Background Technology

[0002] Compressors are the core equipment for increasing gas pressure. Common types include positive displacement compressors such as reciprocating piston compressors and screw compressors, and dynamic compressors such as centrifugal impeller compressors. Their main function is to convert low-pressure gas into high-pressure gas. They are widely used in refrigeration and air conditioning to compress refrigerants, in petrochemicals to pressurize gas, in industrial manufacturing to drive pneumatic tools and instruments, and in portable oxygen generators and vehicle-mounted oxygen generators.

[0003] Currently, when fixing compressors, auxiliary parts such as spring screws and silicone are often used for fixing and locking. A separate silicone tube is also required to connect the compressor to the external gas. The whole production process is complicated and not conducive to production. Moreover, the silicone tube is prone to aging and failure during long-term use. Based on this, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a hollow internal hexagon screw that can overcome or at least partially solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hollow internal hexagonal screw includes a screw head with an internal hexagonal hole, and further includes: a cylindrical connecting part fixedly connected below the screw head, the lower half of the connecting part having external threads; a through hole is opened in the connecting part, and a plurality of reinforcing rings are fixedly connected in the through hole; the through hole communicates with the screw head, and external gas enters the compressor through the through hole.

[0007] Preferably, an anti-slip pad is fixedly connected to the connecting part, and both sides of the anti-slip pad are provided with anti-slip texture.

[0008] Furthermore, a compression spring is fixedly connected to the anti-slip pad, and a plug is fixedly connected to the other end of the compression spring.

[0009] Furthermore, a hexagonal slide rod is fixedly connected to the plug, and the hexagonal slide rod is slidably connected to the screw head.

[0010] Furthermore, a limiting groove is formed inside the screw head, and a top edge is fixedly connected to the lower part of the hexagonal slide rod, the top edge being slidably connected in the limiting groove.

[0011] Furthermore, an air inlet screen is fixedly connected to the lower part of the top edge, and the air inlet screen has filter holes.

[0012] Furthermore, a base plate is fixedly connected to the air intake screen cylinder, and the through hole is closed when the base plate contacts the reinforcing ring.

[0013] Furthermore, the length of the air intake screen cylinder is less than the interval between the two reinforcing rings, and the length of the limiting slide groove is the same as the length of the air intake screen cylinder.

[0014] Compared with the prior art, this utility model provides a hollow internal hexagon screw, which has the following beneficial effects:

[0015] 1. This hollow hexagonal screw, with through holes in the connecting part, ensures that the compressor can be connected to the outside while it is installed on the bracket, simplifying the installation process, eliminating the need for additional silicone tubing, and avoiding the aging and failure of silicone tubing over long-term use.

[0016] 2. This hollow hexagonal screw has an anti-slip plate and a plug, with a compression spring between them. This plugs the through hole when the screw is stationary, preventing dust or particles from entering the through hole when it is not in use or when it is stationary.

[0017] 3. This hollow hexagonal screw, with its air intake screen, can filter out some large particles in the air, thereby reducing the wear and tear on the compressor during operation and increasing its service life.

[0018] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model simplifies the installation process, eliminates the need for additional silicone tubes, avoids the aging and failure of silicone tubes after long-term use, and prevents dust or particles from entering the through holes when not in use or when stationary, thus increasing the service life of the compressor. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a hollow internal hexagonal screw proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of a hollow internal hexagonal screw and plug proposed in this utility model;

[0021] Figure 3 This is a cross-sectional view of a hollow internal hexagonal screw and plug proposed in this utility model;

[0022] Figure 4 This utility model proposes a hollow internal hexagon screw. Figure 3 Enlarged structural diagram of section A;

[0023] Figure 5 This is a schematic diagram of the structure of the plug in a hollow internal hexagonal screw proposed in this utility model.

[0024] In the diagram: 1. Screw head; 11. External thread; 12. Connecting part; 13. Through hole; 14. Limiting groove; 15. Reinforcing ring; 2. Plug; 21. Hexagonal slide bar; 22. Top edge; 23. Air inlet screen cylinder; 24. Base plate; 3. Anti-slip pad; 31. Compression spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example 1: Refer to Figures 1-5 A hollow internal hexagonal screw includes a screw head 1 with an internal hexagonal hole, and further includes: a cylindrical connecting part 12 fixedly connected below the screw head 1, the lower half of the connecting part 12 having an external thread 11; a through hole 13 is opened in the connecting part 12, and a plurality of reinforcing rings 15 are fixedly connected in the through hole 13; the through hole 13 is connected to the screw head 1, and external gas enters the compressor through the through hole 13.

[0028] In this invention, the screw head 1 has an internal hexagonal hole that is connected to the through hole 13, making the interior of the hexagonal screw hollow. This replaces the silicone tube that connects the outside and inside of the compressor. The connecting part 12 below the screw head 1 is divided into upper and lower sections. The upper section of the connecting part 12 has a smooth surface and is mainly used to insert the limiting bracket. The lower section of the connecting part 12 has an external thread 11. After passing through the bracket, the entire device is installed on the air inlet of the compressor through the external thread 11. This allows the compressor to be installed and fixed on the bracket while connecting the inside and outside of the compressor. The installation is simple and does not require an additional silicone tube to connect to the compressor, avoiding the aging and failure of the silicone tube after long-term use.

[0029] Multiple reinforcing rings 15 are provided inside the through hole 13, which can improve the shear strength of the screw itself, enabling it to withstand greater loads without deformation or breakage.

[0030] Example 2: Refer to Figures 1-5Similar to Embodiment 1, but further: an anti-slip pad 3 is fixedly connected to the connecting part 12, both sides of the anti-slip pad 3 are provided with anti-slip texture, a compression spring 31 is fixedly connected to the anti-slip pad 3, a plug 2 is fixedly connected to the other end of the compression spring 31, a hexagonal slide rod 21 is fixedly connected to the plug 2, the hexagonal slide rod 21 is slidably connected to the screw head 1, a limiting groove 14 is opened in the screw head 1, a top edge 22 is fixedly connected to the bottom of the hexagonal slide rod 21, the top edge 22 is slidably connected in the limiting groove 14, an air inlet screen cylinder 23 is fixedly connected to the bottom of the top edge 22, a filter hole is opened on the air inlet screen cylinder 23, a base plate 24 is fixedly connected to the air inlet screen cylinder 23, when the base plate 24 contacts the reinforcing ring 15, the through hole 13 is in a closed state, the length of the air inlet screen cylinder 23 is less than the interval between the two reinforcing rings 15, and the length of the limiting groove 14 is the same as the length of the air inlet screen cylinder 23.

[0031] In this invention, after the screws are installed, the anti-slip texture on the anti-slip pad 3 contacts the bracket, thereby increasing the contact area and friction between the anti-slip pad and the bracket. This reduces the probability of the screws loosening due to long-term vibration. The plug 2 is pushed upward by the compression spring 31. At this time, the top edge 22 slides to the top of the limiting groove 14, and the bottom plate 24 contacts the reinforcing ring 15 and blocks the through hole 13. This prevents dust from entering the through hole 13 when it is not in use or when it is stationary. When the compressor is running, the bottom plate 24 moves downward under the action of air pressure. The plug 2 and the air inlet screen 23 move downward synchronously. Air enters the through hole 13 through the air inlet screen 23 and then enters the compressor. For some compressors whose air inlets are directly connected to the outside, the air inlet screen 23 can filter out some large particles in the air, thereby reducing the losses generated by the compressor during operation and increasing the service life of the compressor.

[0032] The length of the air intake screen cylinder 23 is less than the interval between the two reinforcing rings 15, so as to avoid the bottom plate 24 from contacting the reinforcing ring 15 below when it moves down, which would block the through hole 13. The length of the limiting slide groove 14 is the same as the length of the air intake screen cylinder 23, so that when the top edge 22 moves down to the lowest point of the limiting slide groove 14, the air intake screen cylinder 23 will completely enter the through hole 13, so that the air intake screen cylinder 23 can be completely connected with the through hole 13, and the air intake flow rate reaches the maximum at this time.

[0033] When using the device, the user first passes the connecting part 12 through the mounting hole on the bracket and connects it to the air inlet of the compressor. Then, the user inserts the Allen wrench into the hexagonal hole in the plug 2 and then turns the Allen wrench to tighten the device so that the anti-slip pad 3 fits against the bracket, and the installation is complete.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hollow internal hexagonal screw, comprising a screw head (1) having an internal hexagonal hole, characterized in that, Also includes: A cylindrical connecting part (12) is fixedly connected below the screw head (1), and the lower half of the connecting part (12) is provided with an external thread (11); The connecting part (12) has a through hole (13), and a plurality of reinforcing rings (15) are fixedly connected in the through hole (13); The through hole (13) is connected to the screw head (1), and external gas enters the compressor through the through hole (13).

2. A hollow internal hexagonal screw according to claim 1, characterized in that, An anti-slip pad (3) is fixedly connected to the connecting part (12), and both sides of the anti-slip pad (3) are provided with anti-slip texture.

3. A hollow internal hexagonal screw according to claim 2, characterized in that, A compression spring (31) is fixedly connected to the anti-slip pad (3), and a plug (2) is fixedly connected to the other end of the compression spring (31).

4. A hollow internal hexagonal screw according to claim 3, characterized in that, A hexagonal slide rod (21) is fixedly connected to the plug (2), and the hexagonal slide rod (21) is slidably connected to the screw head (1).

5. A hollow internal hexagonal screw according to claim 4, characterized in that, The screw head (1) has a limiting groove (14) inside, and the hexagonal slide rod (21) has a top edge (22) fixedly connected below it. The top edge (22) is slidably connected in the limiting groove (14).

6. A hollow internal hexagonal screw according to claim 5, characterized in that, An air inlet screen (23) is fixedly connected to the lower part of the top edge (22), and the air inlet screen (23) has filter holes.

7. A hollow internal hexagonal screw according to claim 6, characterized in that, A base plate (24) is fixedly connected to the air intake screen cylinder (23). When the base plate (24) contacts the reinforcing ring (15), the through hole (13) is closed.

8. A hollow internal hexagonal screw according to claim 7, characterized in that, The length of the air intake screen (23) is less than the interval between the two reinforcing rings (15), and the length of the limiting groove (14) is the same as the length of the air intake screen (23).

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