Sealing structure of drying machine

Abstract

The utility model provides a sealing structure of a drying machine, which comprises the drying machine used for drying compressed air, the drying machine is provided with a plurality of *-shaped pipes filled with drying agents, the upper end and the lower end of each *-shaped pipe are respectively connected with a cavity seat, and the compressed air enters the cavity seats and then is dried through the interiors of the *-shaped pipes; the sealing structure is characterized in that the cavity seat is of a hollow structure, cavity openings are formed in the front end and the rear end of the cavity seat, sealing rings are clamped at the cavity openings in the cavity seat, cover plates which are connected with the cavity seat and close the cavity openings are arranged on the outer sides of the sealing rings, and the sealing rings are located between the cavity openings and the cover plates so that the cavity openings and the cover plates can be connected in a sealed mode; the two sides of the end, close to the pipe shaped like the Chinese character'mi ', of the cavity base are provided with outer eaves extending outwards, and the sealing ring is provided with bayonets matched with the outer eaves. The sealing ring is provided with the bayonet which can be matched with the outer eave part on the cavity seat, and the sealing ring can be connected with the cavity seat in a clamping manner by combining with the fixing groove, so that the sealing ring is convenient to mount, is prevented from loosening and is high in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, and more specifically to a sealing structure of a dryer. Background Art

[0002] When using an air compressor to produce compressed air, water is usually generated simultaneously. Therefore, the compressed air output by the air compressor needs to be dried by a dryer. The existing modular dryer usually includes a plurality of cross-shaped tubes filled with desiccant and cavity seats connecting the upper and lower ends of the cross-shaped tubes. Compressed air enters one end of the cavity seat, flows through the cross-shaped tubes to be dried, and then is output from the other end of the cavity seat. The cavity seat needs to be closed by a cover plate. In order to improve the sealing performance, some dryers are provided with a sealing ring between the cover plate and the cavity seat. Such sealing rings usually have a relatively simple structure, and there is no specific structure for the sealing ring to be connected and cooperated with the cavity seat. Instead, it is clamped and fixed between the cover plate and the cavity seat, and is made of silicone material, which is prone to loosening or deformation. When the dryer is working, a large-pressure airflow will be generated in the cavity seat. Therefore, using a sealing ring with insufficient installation stability for sealing is likely to cause air leakage, and the dryer needs to be frequently maintained or the sealing ring needs to be replaced. Summary of the Utility Model

[0003] In view of this, the utility model provides a sealing structure of a dryer.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A sealing structure of a dryer, including a dryer for drying compressed air. The dryer is provided with a plurality of cross-shaped tubes filled with desiccant. The upper and lower ends of the cross-shaped tubes are respectively connected with cavity seats. After the compressed air enters the cavity seats, it is dried through the inside of the cross-shaped tubes. The characteristics are as follows: The cavity seat is a hollow structure, and cavity openings are formed at the front and rear ends of the cavity seat. A sealing ring is clamped on the cavity seat at the position of the cavity openings. An outer cover plate for connecting the cavity seat and closing the cavity openings is provided on the outer side of the sealing ring. The sealing ring is located between the cavity openings and the cover plate to make the two sealed and connected. Outer eaves are provided on both sides of one end of the cavity seat close to the cross-shaped tube and extend outwards. The sealing ring is provided with a bayonet matching with the outer eaves.

[0006] In a preferred technical scheme, a fixing groove matching with the shapes of the front and rear ends of the cavity seat is provided on one side of the sealing ring close to the cavity seat. The sealing ring is clamped on the cavity seat through the fixing groove.

[0007] In a preferred technical scheme, a protruding outer convex part and an inner convex part are provided on one side of the sealing ring close to the cavity seat. The fixing groove is formed between the outer convex part and the inner convex part. The shape of the outer convex part matches the outer structure of the cavity seat, and the inner convex part matches the shape of the cavity opening provided on the cavity seat.

[0008] In a preferred technical solution, a convex ring portion matching the shape of the cavity opening is provided on one side of the sealing ring close to the cover plate, and the convex ring portion protrudes towards the side close to the cover plate.

[0009] In a preferred technical solution, a plurality of first connection holes are provided on the sealing ring, second connection holes corresponding to the first connection holes are provided on the cavity seat around the cavity opening, and third connection holes corresponding to the first connection holes are provided on the cover plate.

[0010] In a preferred technical solution, a plurality of fourth connection holes are provided on the outer eaves portion, a plurality of through holes communicating with the cross-shaped tube are provided at the bottom of the cavity seat, the cavity seat can be screwed to connect the cross-shaped tube through the fourth connection holes, and a sealing ring is provided between the cross-shaped tube and the fourth connection holes.

[0011] In a preferred technical solution, the sealing ring is made of nitrile rubber.

[0012] Through the above technical solutions, compared with the prior art, the present utility model has the following beneficial technical effects:

[0013] The sealing ring is provided with a bayonet that can cooperate with the outer eaves portion on the cavity seat. Combined with the fixing groove, the sealing ring can be snap-connected with the cavity seat, which is convenient for installation, avoids loosening, and has strong stability. The convex ring portion on the sealing ring makes it fit more closely with the cover plate, forming a good seal between the cover plate and the cavity seat. The sealing ring is integrally formed of nitrile material, which can effectively prevent deformation, has a long service life, and ensures that there is no air leakage during the operation of the dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0015] Figure 1 It is an exploded structural schematic diagram of the cavity seat, the sealing ring, and the cover plate.

[0016] Figure 2 It is an overall structural schematic diagram of the dryer.

[0017] Figure 3 It is an assembled structural schematic diagram of the cavity seat, the sealing ring, and the cover plate.

[0018] Figure 4 It is a three-dimensional structural schematic of the sealing ring Figure 1 .

[0019] Figure 5 Schematic of the three-dimensional structure of the sealing ring Figure 2 .

[0020] Reference numerals in the attached drawings: 100, cross-shaped tube; 200, cavity seat; 210, cavity opening; 300, sealing ring; 400, cover plate; 220, outer eaves; 310, bayonet; 320, fixing groove; 330, outer convex part; 340, inner convex part; 350, convex ring part; 360, first connection hole; 230, second connection hole; 410, third connection hole; 221, fourth connection hole. Detailed implementation manners

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0022] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0023] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0024] A sealing structure of a dryer, please refer to Figures 1-5, including a dryer for drying compressed air. Water is generated during the production of compressed air, so it needs to be dried by the dryer. The dryer in this embodiment is a 0.8 - 1.6 MPa modular dryer. The dryer is provided with a plurality of cross-shaped tubes 100 filled with desiccant. The cross-shaped tubes 100 are of hollow structure and filled with desiccant inside. The upper and lower ends of the cross-shaped tubes 100 are respectively connected to cavity seats 200. The cross-shaped tubes 100 are distributed in two columns, and the upper and lower ends of each column of cross-shaped tubes 100 are respectively connected to the same cavity seat 200. Compressed air enters the cavity seat 200 through the ventilation component connected to one end of the cavity seat 200. The air is injected into the cavity seat 200 under high pressure and then passes through the cross-shaped tubes 100 to achieve the drying process. Finally, it is output from the dryer through the cavity seat 200 at the other end to complete the drying of the compressed air. The cavity seat 200 is of hollow structure, and compressed air can flow inside it. Cavity openings 210 are formed at the front and rear ends of the cavity seat 200. A sealing ring 300 is clamped on the cavity seat 200 at the position of the cavity openings 210. A cover plate 400 that connects to the cavity seat 200 and closes the cavity openings 210 is provided outside the sealing ring. The sealing ring 300 is located between the cavity openings 210 and the cover plate 400 to make the two sealed and connected, preventing compressed air from leaking at the connection position between the cover plate 400 and the cavity seat 200; on both sides of one end of the cavity seat 200 close to the cross-shaped tubes 100, there are outwardly extending outer eaves 220. The cavity seat 200 is connected to the cross-shaped tubes 100 through the outer eaves 220. The sealing ring 300 is provided with a bayonet 310 that cooperates with the outer eaves 220. The structure of the bayonet 310 enables the sealing ring 300 to be inserted into the cavity openings 210 without being blocked by the outer eaves 220, and at the same time plays a positioning role, facilitating the installation of the sealing ring 300.

[0025] Furthermore, on the side of the sealing ring 300 close to the cavity seat 200, there is a fixing groove 320 that matches the shapes of the front and rear ends of the cavity seat 200. The sealing ring 300 is clamped on the cavity seat 200 through the fixing groove 320. On the side of the sealing ring close to the cavity seat 320, there are protruding outer convex parts 330 and inner convex parts 340. The fixing groove 320 is formed between the outer convex parts 330 and the inner convex parts 340. The shape of the outer convex parts 330 matches the outer structure of the cavity seat 200, and the inner convex parts 340 match the shape of the cavity openings 210 provided on the cavity seat 200. The bayonet 310 is formed on the outer convex parts 330. When the sealing ring 300 is installed, the inner convex parts 340 are inserted into the cavity openings 210, and the outer convex parts 330 are sleeved on the outside of the cavity seat 200, so that the end face of the cavity seat 200 is embedded into the fixing groove 320. The sealing ring 300 can wrap the end face of the cavity seat 200, which can effectively improve the connection stability between the sealing ring 300 and the cavity seat 200 and make the seal between the cavity seat 200 and the cover plate 400 better.

[0026] On one side of the sealing ring 300 close to the cover plate 400, there is a convex ring portion 350 whose shape matches that of the cavity opening 210. The convex ring portion 350 protrudes towards the side close to the cover plate 400. When the cover plate 400 is connected to the cavity seat 200, the convex ring portion 350 on the sealing ring 300 is pressed by the cover plate 400 to improve the sealing performance between the cover plate 400 and the sealing ring 300, and the sealing effect is good. There are 4 first connection holes 360 on the sealing ring 300. On the cavity seat 200, second connection holes 230 corresponding to the first connection holes 360 are provided around the cavity opening 210. The cover plate 400 is provided with third connection holes 410 corresponding to the first connection holes 360. After the first connection holes 360, the second connection holes 230, and the third connection holes 410 are aligned, screws are driven in to connect and fix the cover plate 400 and the cavity seat 200, and the sealing ring 300 is pressed and stably fixed between the cover plate 400 and the cavity seat 200.

[0027] Furthermore, there are multiple fourth connection holes 221 on the outer eaves portion 220. Multiple through holes 240 that can communicate with the cross-shaped tube 100 are provided at the bottom of the cavity seat 200. Compressed air flows into or out of the cross-shaped tube 100 through the through holes 240. The cavity seat 200 can be screwed to connect the cross-shaped tube 100 through the fourth connection holes 221. A sealing ring is provided between the cross-shaped tube 100 and the connection holes 221 to make the cross-shaped tube 100 and the cavity seat 200 be hermetically connected. The sealing ring 300 is made of nitrile rubber. Nitrile rubber has good tear resistance, enabling it to resist cracks and tears, and has strong wear resistance and heat resistance and other characteristics, which can effectively prevent the sealing ring 300 from loosening and displacement to ensure the sealing performance.

[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sealing structure of a dryer, comprising a dryer for drying compressed air, wherein the dryer is provided with a plurality of ferrules (100) filled with desiccant, wherein the upper and lower ends of the ferrules (100) are respectively connected to a cavity seat (200), and the compressed air enters the cavity seat (200) and is dried through the interior of the ferrules (100); the characteristics are as follows: The cavity seat (200) is a hollow structure, and a cavity opening (210) is formed at the front and rear ends of the cavity seat (200). A sealing ring (300) is provided on the cavity seat (200) at the cavity opening (210), and a cover plate (400) is provided on the outside of the sealing ring (300) for connecting with the cavity seat (200) and closing the cavity opening (210). The sealing ring (300) is located between the cavity opening (210) and the cover plate (400) so that the two are sealed and connected; and outer flanges (220) extending outward are provided on both sides of one end of the cavity seat (200) close to the ferrule (100), and the sealing ring (300) is provided with a bayonet (310) that cooperates with the outer flange (220).

2. The sealing structure of a dryer according to claim 1, characterized in that: A fixing groove (320) matching the shape of the front and rear ends of the cavity seat (200) is provided on the side of the sealing ring (300) close to the cavity seat (200), and the sealing ring (300) is clamped on the cavity seat (200) through the fixing groove (320).

3. A sealing structure of a dryer according to claim 2, characterized in that: The sealing ring (300) is provided with a raised outer convex portion (330) and an inner convex portion (340) on one side close to the cavity seat (200), and the fixing groove (320) is formed between the outer convex portion (330) and the inner convex portion (340), and the shape of the outer convex portion (330) matches the outer structure of the cavity seat (200), and the shape of the inner convex portion (340) matches the shape of the cavity opening (210) provided on the cavity seat (200).

4. The sealing structure of a dryer according to claim 1, characterized in that: A convex ring portion (350) matching the shape of the cavity opening (210) is provided on the side of the sealing ring (300) close to the cover plate (400), and the convex ring portion (350) protrudes toward the side close to the cover plate (400).

5. The sealing structure of a dryer according to claim 1, characterized in that: The sealing ring (300) is provided with a plurality of first connection holes (360), the cavity seat (200) is provided with second connection holes (230) corresponding to the first connection holes (360) at the periphery of the cavity opening (210), and the cover plate (400) is provided with third connection holes (410) corresponding to the first connection holes (360).

6. The sealing structure of a dryer according to claim 1, characterized in that: The outer eaves (220) are provided with a plurality of fourth connection holes (221); the bottom of the cavity seat (200) is provided with a plurality of through holes (240) which can be connected to the ferrule (100); the cavity seat (200) can be screwed to the ferrule (100) through the fourth connection holes (221); and a sealing ring is provided between the ferrule (100) and the fourth connection holes (221).

7. The sealing structure of a dryer according to claim 1, characterized in that: The sealing ring (300) is made of nitrile rubber.

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