A leak-proof seal assembly arrangement for an air compressor

Abstract

The utility model relates to a kind of air compressor's leakproof sealing assembly device, belong to air compressor technical field.The circular-truncated-cone fairing is equipped with limit platform between inner wall of connecting pipe, one end of the oil guide pipe is fixedly connected with connecting block, the connecting block one end is fixedly connected with the connecting head corresponding with circular-truncated-cone fairing, the connecting block one end is set with connecting pipe, and the connecting block surface is equipped with external thread, the connecting ring inner wall is equipped with the internal thread corresponding with connecting block, the limit platform and circular-truncated-cone fairing are all fixedly connected with sealing ring.Set sealing mechanism, pre-alignment between oil guide pipe and connecting pipe, after connecting block and connecting ring are aligned, rotating connecting ring, due to the limiting effect of limit ring, rotating connecting ring, connecting block will be pulled towards connecting ring, until oil guide pipe and connecting pipe are sealed, connecting ring rotates, and it will make oil guide pipe and connecting pipe between even stress, guarantee sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, and in particular to a leak-proof sealing component device for an air compressor. Background Technology

[0002] An air compressor is a device used to compress gases. Air compressors are similar in construction to water pumps. Most air compressors are reciprocating piston, rotary vane, or rotary screw types. Air compressors convert the mechanical energy of a prime mover (such as an electric motor) into the pressure energy of gas, and are widely used in industry, agriculture, and defense. Their core function is to provide compressed air to air supply devices, driving various pneumatic tools and systems.

[0003] As shown in the reference case "A Sealing Device for a Screw Air Compressor" (publication number CN219281966U), it includes a connecting pipe with a conical groove inside. A conical through pipe is engaged inside the conical groove, and an oil guide pipe is engaged on the left side of the conical through pipe. A locking mechanism is installed between the outer side of the oil guide pipe and the connecting pipe. First sealing rings are provided on the outer sides of both ends of the conical groove. This utility model uses the connecting pipe as the connecting body, engaging the conical through pipe into the conical groove to achieve a connection and sealing with the first sealing ring. The oil guide pipe is then loosely connected to the conical through pipe, and the first sealing ring is engaged between them. The locking mechanism then locks the oil guide pipe in place, ensuring a horizontal connection between the oil guide pipe and the conical through pipe. This achieves the advantages of maintaining a horizontal connection, preventing deviation and breakage, and ensuring a stable connection when replacement is needed. However, the above device still has the following drawbacks:

[0004] Multiple threaded rods need to be rotated to seal between the oil guide tube and the connecting tube. It is impossible to guarantee that the multiple threaded rods rotate synchronously and push the same distance, which may cause the horn-shaped locking block to shift, resulting in uneven force between the oil guide tube and the connecting tube and leakage. Utility Model Content

[0005] Therefore, it is necessary to provide a leak-proof sealing component device for an air compressor to address the problem that the inability to ensure that multiple threaded rods rotate synchronously and push the same distance may cause the horn-shaped locking block to shift, resulting in uneven force between the oil guide pipe and the connecting pipe and leakage.

[0006] A leak-proof sealing assembly for an air compressor includes: a connecting pipe fixedly connected to the oil port of a twin-screw air compressor, with an oil guide pipe provided on the connecting pipe; a sealing mechanism disposed between the connecting pipe and the sealing mechanism for sealing connection between the two; and a locking mechanism disposed on the sealing mechanism for locking the sealing mechanism. The sealing mechanism includes a limiting ring fixedly connected to the connecting pipe, a connecting ring rotatably connected to one side of the limiting ring, a frustum-shaped flow guide shroud inside the connecting pipe, a limiting platform between the frustum-shaped flow guide shroud and the inner wall of the connecting pipe, a connecting block fixedly connected to one end of the oil guide pipe, a connecting head corresponding to the frustum-shaped flow guide shroud fixedly connected to one end of the connecting block, one end of the connecting block fitting snugly against the connecting pipe, and an external thread on the surface of the connecting block. An internal thread corresponding to the connecting block is formed on the inner wall of the connecting ring. Sealing rings are fixedly connected to both the limiting platform and the frustum-shaped flow guide shroud.

[0007] In one embodiment, a sealing ring is fixedly connected to one end of the connecting pipe near the connecting block, and a sealing groove corresponding to the sealing ring is provided on one end of the connecting block near the connecting pipe.

[0008] In one embodiment, the sealing ring on one side of the limiting platform has a hemispherical vertical cross-section, and the sealing ring on the frustum-shaped flow guide is set as a cone shape corresponding to the frustum-shaped flow guide.

[0009] In one embodiment, when one end of the connecting ring is attached to one end of the oil guide pipe, the connecting block is located in the center of the connecting ring.

[0010] In one embodiment, the locking mechanism includes a fixing block fixedly connected to the connecting ring, a threaded rod threadedly connected to the fixing block, the threaded rod extending through the connecting ring to the top of the connecting pipe, and a friction block rotatably connected to one end of the threaded rod.

[0011] In one embodiment, the outer surface of the connecting pipe is provided with anti-slip textures corresponding to the friction block, and the anti-slip textures are evenly distributed on the surface of the connecting pipe.

[0012] In one embodiment, the end face of the connector makes a pressing contact with the sealing ring of the limiting platform, and the conical sealing ring of the frustum-shaped guide shield is interference-fitted with the outer conical surface of the connector.

[0013] In one embodiment, the internal thread of the connecting ring has the same rotation direction as the external thread of the connecting block, and the tightening direction is opposite to the vibration direction of the oil guide pipe during air compressor operation. Beneficial effects

[0014] The aforementioned air compressor's anti-leakage sealing assembly is equipped with a sealing mechanism. The oil guide pipe and the connecting pipe are pre-aligned, and after the connecting block and the connecting ring are aligned, the connecting ring is rotated. Due to the limiting effect of the limiting ring, rotating the connecting ring will pull the connecting block toward the connecting ring until the oil guide pipe and the connecting pipe are sealed. When the connecting ring rotates, the oil guide pipe and the connecting pipe will be evenly stressed, ensuring the sealing effect.

[0015] The sealing effect is improved by using a combination of sealing rings, connectors, and connecting blocks to achieve multi-stage sealing between the oil guide pipe and the connecting pipe. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the connecting pipe of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the oil guide tube of this utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of this utility model.

[0022] Figure label:

[0023] 100. Connecting pipe; 110. Oil guide pipe; 200. Sealing mechanism; 210. Limiting ring; 220. Connecting ring; 230. Frustum-shaped guide shield; 240. Limiting platform; 250. Connecting head; 260. Connecting block; 300. Locking mechanism; 310. Fixing block; 320. Threaded rod; 330. Friction block. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] The following is combined Figures 1-5 This invention describes a leak-proof sealing assembly for an air compressor.

[0026] In one embodiment, a leak-proof sealing assembly for an air compressor includes: a connecting pipe 100, fixedly connected to the oil port of a twin-screw air compressor, and an oil guide pipe 110 provided on the connecting pipe 100; a sealing mechanism 200 disposed between the connecting pipe 100 and the sealing mechanism 200 for sealing connection; and a locking mechanism 300 disposed on the sealing mechanism 200 for locking the sealing mechanism 200; wherein the sealing mechanism 200 includes a limiting ring 210 fixedly connected to the connecting pipe 100, and a connecting ring 22 rotatably connected to one side of the limiting ring 210. 0. A frustum-shaped flow guide shroud 230 is provided inside the connecting pipe 100. A limiting platform 240 is provided between the frustum-shaped flow guide shroud 230 and the inner wall of the connecting pipe 100. A connecting block 260 is fixedly connected to one end of the oil guide pipe 110. A connecting head 250 corresponding to the frustum-shaped flow guide shroud 230 is fixedly connected to one end of the connecting block 260. One end of the connecting block 260 is fitted to the connecting pipe 100, and an external thread is provided on the surface of the connecting block 260. An internal thread corresponding to the connecting block 260 is provided on the inner wall of the connecting ring 220. Sealing rings are fixedly connected to both the limiting platform 240 and the frustum-shaped flow guide shroud 230.

[0027] like Figure 1 , Figure 3 and Figure 4 As shown, a sealing ring is fixedly connected to the end of the connecting pipe 100 near the connecting block 260, and a sealing groove corresponding to the sealing ring is provided on the end of the connecting block 260 near the connecting pipe 100. The sealing ring on one side of the limiting platform 240 has a hemispherical vertical cross-section, and the sealing ring on the frustum-shaped guide shroud 230 is set as a cone shape corresponding to the frustum-shaped guide shroud 230. When one end of the connecting ring 220 is in contact with one end of the oil guide pipe 110, the connecting block 260 is in the center position of the connecting ring 220. The end face of the connector 250 forms a pressing contact with the sealing ring of the limiting platform 240, and the cone-shaped sealing ring of the frustum-shaped guide shroud 230 and the outer cone surface of the connector 250 achieve an interference fit. The internal thread of the connecting ring 220 and the external thread of the connecting block 260 have the same rotation direction, and the tightening direction is opposite to the vibration direction of the oil guide pipe 110 when the air compressor is running.

[0028] In this embodiment, when connecting the connecting pipe 100 and the oil guide pipe 110, the connecting ring 220 is rotated. Under the action of the thread, the oil guide pipe 110 moves closer to the connecting pipe 100 until the end face of the oil guide pipe 110 is in contact with the end face of the connecting ring 220. At this time, the connecting block 260 is in contact with the end face of the connecting pipe 100, and the connecting head 250 is inserted into the frustum-shaped guide shroud 230. The connecting head 250 is in contact with the frustum-shaped guide shroud 230, and the sealing ring of the connecting pipe 100 is in contact with the connecting block 260. The outer conical surface of the connecting head 250 is press-fitted with the conical sealing ring of the frustum-shaped guide shroud 230. The end face of the connecting head 250 presses against the hemispherical sealing ring of the limiting platform 240 to form a triple seal to prevent oil leakage. When the connecting block 260 rotates, the oil guide pipe 110 moves evenly toward the connecting pipe 100, and the oil guide pipe 110 and the connecting pipe 100 squeeze each sealing ring evenly, so that the sealing ring is under stable force, and at the same time the oil guide pipe 110 and the connecting pipe 100 are kept aligned axially to ensure the reliability of the seal and avoid leakage.

[0029] It should be noted that a screw air compressor achieves gas compression by rotating a pair of meshing screw rotors (male and female rotors) within a sealed cavity, changing the volume between the tooth grooves. Its core function is to convert mechanical energy into gas pressure energy, providing power to the pneumatic system. The equipment is pre-configured with a built-in cooling system, simplifying the installation process, and boasts advantages such as high efficiency, high reliability, low vibration, and low noise. In oil-injected screw air compressors, lubricating oil is injected during compression, providing cooling, sealing, and lubrication. The oil-gas mixture is then separated to obtain clean compressed air.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the locking mechanism 300 includes a fixing block 310 fixedly connected to the connecting ring 220. A threaded rod 320 is threadedly connected to the fixing block 310. The threaded rod 320 extends through the connecting ring 220 to the top of the connecting tube 100, and a friction block 330 is rotatably connected to one end of the threaded rod 320. The outer surface of the connecting tube 100 is provided with anti-slip textures corresponding to the friction block 330, and the anti-slip textures are evenly distributed on the surface of the connecting tube 100.

[0031] In this embodiment, after the rotating connecting ring 220 connects the oil guide pipe 110 and the connecting pipe 100, the threaded rod 320 is rotated, causing the threaded rod 320 to drive the friction block 330 closer to the surface of the connecting pipe 100. The position of the connecting ring 220 is locked by the mutual cooperation between the friction block 330 and the anti-slip texture on the surface of the connecting pipe 100, so as to prevent the vibration from causing the connecting ring 220 to rotate, thereby causing the oil guide pipe 110 to fall off the connecting pipe 100. At the same time, it also serves as a function to prevent accidental contact.

[0032] Working principle: The oil guide pipe 110 and connecting pipe 100 are pre-aligned. The connecting ring 220 is rotated, and the external thread of the connecting block 260 engages with the internal thread of the connecting ring 220. The connector 250 is inserted into the frustum-shaped flow guide shroud 230, with its outer conical surface interlocking with the conical sealing ring. Simultaneously, its end face presses against the hemispherical sealing ring of the limiting platform 240, forming a triple seal. The sealing ring of the connecting block 260 fits against the connecting pipe 100; the outer conical surface of the connector 250 interlocks with the conical sealing ring of the frustum-shaped flow guide shroud 230; and the end face of the connector 250 presses against the hemispherical sealing ring of the limiting platform 240 to prevent oil leakage. The threaded rod 320 is tightened, making the friction block 330 in close contact with the anti-slip texture on the surface of the connecting pipe 100, using friction to resist thread loosening caused by vibration.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A leak-proof sealing assembly for an air compressor, characterized in that, include: A connecting pipe (100) is fixedly connected to the oil port of a twin-screw air compressor, and an oil guide pipe (110) is provided on the connecting pipe (100). A sealing mechanism (200) is provided between the connecting pipe (100) and the sealing mechanism (200) to provide a sealing connection between the two; The locking mechanism (300) is provided with a sealing mechanism (200) for locking the sealing mechanism (200); The sealing mechanism (200) includes a limiting ring (210) fixedly connected to the connecting pipe (100), a connecting ring (220) rotatably connected to one side of the limiting ring (210), a frustum-shaped flow guide (230) provided inside the connecting pipe (100), a limiting platform (240) provided between the frustum-shaped flow guide (230) and the inner wall of the connecting pipe (100), and a connecting block (260) fixedly connected to one end of the oil guide pipe (110). The connecting block (260) is fixedly connected to a connector (250) corresponding to the frustum-shaped guide shield (230) at one end. The connecting block (260) is fitted to the connecting pipe (100) at one end. The surface of the connecting block (260) is provided with an external thread. The inner wall of the connecting ring (220) is provided with an internal thread corresponding to the connecting block (260). Both the limiting platform (240) and the frustum-shaped guide shield (230) are fixedly connected with sealing rings.

2. The anti-leakage sealing assembly device for an air compressor according to claim 1, characterized in that, A sealing ring is fixedly connected to one end of the connecting pipe (100) near the connecting block (260), and a sealing groove corresponding to the sealing ring is provided on one end of the connecting block (260) near the connecting pipe (100).

3. The anti-leakage sealing assembly device for an air compressor according to claim 1, characterized in that, The sealing ring on one side of the limiting platform (240) has a vertical cross-section that is hemispherical, and the sealing ring on the frustum-shaped guide shield (230) is set as a cone shape corresponding to the frustum-shaped guide shield (230).

4. The anti-leakage sealing assembly device for an air compressor according to claim 1, characterized in that, When one end of the connecting ring (220) is attached to one end of the oil guide pipe (110), the connecting block (260) is in the center of the connecting ring (220).

5. The anti-leakage sealing assembly device for an air compressor according to claim 1, characterized in that, The locking mechanism (300) includes a fixing block (310) fixedly connected to the connecting ring (220), a threaded rod (320) threadedly connected to the fixing block (310), the threaded rod (320) extending through the connecting ring (220) to the top of the connecting pipe (100), and a friction block (330) rotatably connected to one end of the threaded rod (320).

6. The leak-proof sealing assembly device for an air compressor according to claim 5, characterized in that, The outer surface of the connecting pipe (100) is provided with anti-slip textures corresponding to the friction block (330), and the anti-slip textures are evenly distributed on the surface of the connecting pipe (100).

7. The leak-proof sealing assembly device for an air compressor according to claim 1, characterized in that, The end face of the connector (250) forms a compression contact with the sealing ring of the limiting platform (240), and the conical sealing ring of the frustum-shaped guide shield (230) and the outer conical surface of the connector (250) achieve an interference fit.

8. The leak-proof sealing assembly device for an air compressor according to claim 1, characterized in that, The internal thread of the connecting ring (220) has the same rotation direction as the external thread of the connecting block (260), and the tightening direction is opposite to the vibration direction of the oil guide pipe (110) when the air compressor is running.

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