Air inlet valve of screw compressor

Abstract

The utility model discloses an air inlet valve of a screw compressor, which belongs to the technical field of valves and comprises an air inlet valve, an air inlet pipe arranged on the air inlet valve and used for feeding air, a filtering structure arranged on the air inlet pipe and used for filtering entering air, and a connecting structure arranged on the air inlet valve and used for connecting a pipeline with the filtering structure, the filtering structure comprises a corrugated pipe fixedly arranged on the air inlet pipe in a sleeving mode, a connecting pipe arranged at one end of the corrugated pipe, an impurity box movably installed in the connecting pipe and a conical filtering plate arranged in the impurity box and used for filtering impurities. According to the utility model, the conical filter plate is arranged at the air inlet pipe of the air inlet valve, impurities and dust in air flow can be filtered and blocked, so that the abrasion and corrosion of the impurities to internal parts of the compressor are reduced, and the impurities on the conical filter plate can slide into the impurity box along the inclined surface of the conical filter plate to be stored under the blowing of the air flow; the blockage condition of the conical filter plate can be relieved, and frequent cleaning of the conical filter plate is avoided.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an intake valve for a screw compressor. Background Technology

[0002] The intake valve of a screw compressor is an important component of the screw compressor. The intake valve is mainly responsible for controlling the intake of air to ensure that the compressor draws in the appropriate amount of air when needed. By adjusting the opening of the intake port, the discharge volume of the compressor can vary within a certain range to meet different air demand.

[0003] In the existing technology, screw compressors continuously draw in air during operation. This air may contain impurities such as sand, dust, and rust. If these impurities enter the compressor directly through the intake valve, they will accumulate on the surface of the internal components, leading to increased wear and tear, which in turn causes compressor failure and affects the compressor's service life. Utility Model Content

[0004] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide an intake valve for a screw compressor, thereby solving the problem mentioned in the background art that when impurities in the air enter the compressor through the intake valve, they will accelerate the wear of internal compressor components and affect the compressor's service life.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A screw compressor intake valve, comprising:

[0007] Intake valve;

[0008] The intake pipe, located on the intake valve, is used for air intake;

[0009] A filter structure, arranged on the intake pipe, is used to filter the incoming gas;

[0010] A connection structure, located on the intake valve, is used to connect the pipeline and the filter structure;

[0011] The mounting structure is arranged on the connecting structure and the filter structure to connect the filter structure and the connecting structure.

[0012] Preferably, the filter structure includes:

[0013] The bellows is fixedly fitted onto the intake pipe;

[0014] A connecting pipe is located at one end of the corrugated pipe;

[0015] The impurity box is movably installed inside the connecting pipe;

[0016] Conical filter plates are arranged inside the impurity box to filter impurities.

[0017] Preferably, the connection structure includes:

[0018] Support rod, located on the intake valve;

[0019] A fixed base is located at one end of the support rod;

[0020] The mounting tube is arranged on the fixed base, and the impurity box is located inside the mounting tube;

[0021] A connecting flange is located at one end of the installation pipe and is used to connect the pipeline.

[0022] A sealing assembly, located inside the mounting tube, is used to seal the connection between the impurity box and the mounting tube.

[0023] Preferably, the sealing assembly includes:

[0024] Retaining rings are arranged inside the mounting pipe;

[0025] A rubber sealing sleeve is fixedly fitted onto the impurity box and contacts one side of the retaining ring;

[0026] The rubber sealing sleeve is movably fitted onto the connecting pipe and contacts the inner wall of the installation pipe.

[0027] Preferably, the sealing assembly further includes:

[0028] One inclined plane is arranged on the rubber sealing sleeve;

[0029] Inclined surface two is arranged inside the installation pipe and corresponds to inclined surface one.

[0030] Preferably, the mounting structure includes:

[0031] The threaded sleeve is rotatably fitted onto the connecting pipe, and the threaded sleeve is threaded onto the outer surface of the mounting pipe.

[0032] The sealing ring is located inside the threaded sleeve and contacts one end of the mounting tube.

[0033] Preferably, the mounting structure further includes a limiting component arranged on the threaded sleeve to limit the rotational position of the threaded sleeve.

[0034] Preferably, the limiting component includes:

[0035] The limiting ring is fixedly sleeved on the connecting pipe;

[0036] An annular groove is formed inside the threaded sleeve, and the limiting ring is rotatably installed inside the annular groove.

[0037] The beneficial effects of this utility model are as follows:

[0038] This invention uses a conical filter plate installed at the intake pipe of the intake valve to filter and block impurities and dust in the airflow, thereby reducing the wear and corrosion of internal compressor components caused by impurities. Furthermore, under the blowing of the airflow, impurities on the conical filter plate can slide down its inclined surface and be stored in the impurity box, which can alleviate the clogging of the conical filter plate and avoid frequent cleaning of the conical filter plate.

[0039] This invention allows for the removal of the connection between the connecting pipe and the installation pipe when there are excessive impurities on the conical filter plate and the impurity box. This enables the impurity box to be pulled out of the installation pipe, facilitating the cleaning of impurities inside the impurity box and the conical filter plate, or the replacement of the impurity box and the conical filter plate with new ones. Furthermore, the combination of the rubber sealing sleeve and the sealing ring increases the sealing performance of the connection between the connecting pipe and the installation pipe, preventing impurity leakage. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A schematic diagram of the structure of an intake valve for a screw compressor provided in this embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the intake pipe structure of an intake valve for a screw compressor provided in this embodiment of the present invention;

[0043] Figure 3 A schematic diagram of the bellows cross-sectional structure of a screw compressor intake valve provided for an embodiment of this utility model;

[0044] Figure 4 A schematic diagram of the exploded structure of the impurity box of the intake valve of a screw compressor provided for an embodiment of this utility model;

[0045] Figure 5 A schematic diagram of the upper cross-sectional structure of the impurity box of a screw compressor intake valve provided in an embodiment of this utility model;

[0046] Figure 6 This is a schematic cross-sectional view of the lower end of the impurity box of a screw compressor intake valve, provided for an embodiment of this utility model.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Intake valve; 101. Intake pipe; 2. Bellows; 201. Connecting pipe; 202. Impurity box; 203. Conical filter plate; 3. Support rod; 301. Fixing seat; 302. Mounting pipe; 303. Connecting flange; 304. Retaining ring; 305. Rubber sealing sleeve; 306. Inclined surface one; 307. Inclined surface two; 4. Threaded sleeve; 401. Sealing ring; 402. Limiting ring; 403. Annular groove. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] Example 1:

[0051] like Figures 1 to 6 As shown, this utility model provides a screw compressor intake valve, including: an intake valve 1 and an intake pipe 101 arranged on the intake valve 1 for intake, and a filter structure arranged on the intake pipe 101 for filtering the incoming gas.

[0052] Specifically, the filter structure includes a corrugated pipe 2 fixedly sleeved on the air inlet pipe 101, a connecting pipe 201 arranged at one end of the corrugated pipe 2, an impurity box 202 movably installed inside the connecting pipe 201, and a conical filter plate 203 arranged inside the impurity box 202 for filtering impurities. During use, the airflow can enter the air inlet valve 1 through the air inlet pipe 101. By setting the conical filter plate 203 at one end of the air inlet pipe 101, it can be used to block and filter impurities in the airflow.

[0053] During use, airflow can enter the intake valve 1 through the intake pipe 101. By setting a conical filter plate 203 at one end of the intake pipe 101, it can block and filter impurities in the airflow, preventing impurities from entering the screw compressor. Under the blowing of the airflow and in cooperation with the inclined surface of the conical filter plate 203, the impurities on the surface of the conical filter plate 203 can be blown into the impurity box 202, relieving the blockage of the conical filter plate 203.

[0054] Example 2:

[0055] Based on Embodiment 1, a connection structure for connecting the pipeline and the filter structure is arranged on the intake valve 1 for easy disassembly.

[0056] Specifically, the connection structure includes a support rod 3 arranged on the intake valve 1, a fixed seat 301 arranged at one end of the support rod 3, an installation pipe 302 arranged on the fixed seat 301, an impurity box 202 located inside the installation pipe 302, a connecting flange 303 arranged at one end of the installation pipe 302 for connecting to the pipeline, and a sealing assembly arranged inside the installation pipe 302 for sealing the connection between the impurity box 202 and the installation pipe 302. The connecting flange 303 on the installation pipe 302 can be used to connect to pipelines of other equipment to transport airflow, while the support rod 3 and the fixed seat 301 are used to support the installation pipe 302.

[0057] Specifically, the sealing assembly includes a retaining ring 304 arranged inside the mounting tube 302, a rubber sealing sleeve 305 fixedly sleeved on the impurity box 202 and in contact with one side of the retaining ring 304, the rubber sealing sleeve 305 being movably sleeved on the connecting tube 201 and in contact with the inner wall of the mounting tube 302, the rubber sealing sleeve 305 being able to fit tightly against the surface of the connecting tube 201 and the inner wall of the mounting tube 302, thereby improving the sealing performance between the impurity box 202 and the connecting tube 201 and the mounting tube 302.

[0058] Specifically, the sealing assembly also includes a first inclined surface 306 arranged on the rubber sealing sleeve 305, and a second inclined surface 307 arranged inside the mounting tube 302 and corresponding to the first inclined surface 306. During installation, the continuous movement of the connecting tube 201 will cause the first inclined surface 306 to be squeezed by the second inclined surface 307 and the inner wall of the mounting tube 302, thereby causing the rubber sealing sleeve 305 to adhere tightly to the surface of the connecting tube 201 and the inner wall of the mounting tube 302.

[0059] Example 3:

[0060] Based on Embodiment 2, in order to facilitate the loading, unloading and cleaning of the conical filter plate 203 that filters impurities, an installation structure for connecting the filter structure and the connecting structure is arranged on the connecting structure and the filter structure.

[0061] The installation structure includes a threaded sleeve 4 rotatably fitted on the connecting pipe 201, the threaded sleeve 4 being threaded onto the outer surface of the installation pipe 302, and a sealing ring 401 arranged inside the threaded sleeve 4 and in contact with one end of the installation pipe 302. When the threaded sleeve 4 rotates, it can move through the threaded engagement with the installation pipe 302, so that the threaded sleeve 4 drives the connecting pipe 201 and the bellows 2 to move and be installed and removed.

[0062] The mounting structure also includes a limiting component arranged on the threaded sleeve 4 to limit the rotational position of the threaded sleeve 4.

[0063] Specifically, the limiting component includes a limiting ring 402 fixedly sleeved on the connecting pipe 201 and an annular groove 403 opened inside the threaded sleeve 4. The limiting ring 402 is rotatably installed inside the annular groove 403. When the threaded sleeve 4 rotates, it can rotate on the limiting ring 402 through the annular groove 403. The setting of the limiting ring 402 and the annular groove 403 can prevent the threaded sleeve 4 from shifting its position during rotation.

[0064] Working principle:

[0065] When there are too many impurities in the impurity box 202, the threaded sleeve 4 can be rotated. The rotating threaded sleeve 4 can move by engaging with the threaded connection of the mounting pipe 302. The threaded sleeve 4, through the engagement of the limiting ring 402 and the annular groove 403, drives the connecting pipe 201 and the bellows 2 to move. The bellows 2 can expand and contract to adapt to the movement of the connecting pipe 201. The connecting pipe 201 can then drive the impurity box 202 to move. Finally, the threaded sleeve 4 can be removed from the mounting pipe 302, and the impurity box 202 and the conical filter plate 203 can be removed from the mounting pipe 302. At this point, the impurity box 202 can be pulled out from the connecting pipe 201 to clean the conical filter plate 203 and the impurities inside.

[0066] Refer to the installation of conical filter plate 203. Figure 5 In the first position, the impurity box 202 is reinserted into the connecting pipe 201, so that the rubber sealing sleeve 305 is fitted onto the connecting pipe 201. Then, the threaded sleeve 4 is re-fitted onto the mounting pipe 302 and rotated, and the threaded sleeve 4 is screwed back onto the mounting pipe 302, so that the threaded sleeve 4 drives the connecting pipe 201 and the impurity box 202 to re-enter the mounting pipe 302. During this process, the first inclined surface 306 on the rubber sealing sleeve 305 will contact the second inclined surface 307. With the continuous movement of the connecting pipe 201, the first inclined surface 306 will be squeezed by the second inclined surface 307 and the inner wall of the mounting pipe 302, causing the rubber sealing sleeve 305 to adhere tightly to the surface of the connecting pipe 201 and the inner wall of the mounting pipe 302. This will also cause the rubber sealing sleeve 305 to adhere tightly to the retaining ring 304, and the sealing ring 401 to adhere tightly to the end face of the mounting pipe 302. Figure 2 To improve the sealing of the connection, tighten the threaded sleeve 4 to complete the installation process.

[0067] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A screw compressor inlet valve, characterized in that, include: Intake valve (1); An intake pipe (101) is arranged on the intake valve (1) for intake; A filter structure is arranged on the intake pipe (101) to filter the incoming gas; A connection structure is arranged on the intake valve (1) for connecting the pipeline and the filter structure; The mounting structure is arranged on the connecting structure and the filter structure to connect the filter structure and the connecting structure.

2. A screw compressor inlet valve as claimed in claim 1, characterized in that The filtering structure includes: The bellows (2) is fixedly sleeved on the air intake pipe (101); A connecting pipe (201) is arranged at one end of the corrugated pipe (2); The impurity box (202) is movably installed inside the connecting pipe (201); A conical filter plate (203) is arranged inside the impurity box (202) for filtering impurities.

3. A screw compressor inlet valve as claimed in claim 1, characterized in that The connection structure includes: Support rod (3) is arranged on intake valve (1); A fixed base (301) is arranged at one end of the support rod (3); The mounting tube (302) is arranged on the fixed base (301), and the impurity box (202) is located inside the mounting tube (302); A connecting flange (303) is located at one end of the mounting pipe (302) and is used to connect the pipeline.

4. A screw compressor inlet valve as claimed in claim 3, characterised in that The connection structure further includes a sealing assembly arranged inside the mounting tube (302) for sealing the connection between the impurity box (202) and the mounting tube (302).

5. A screw compressor inlet valve as claimed in claim 4, characterised in that, The sealing assembly includes: A retaining ring (304) is arranged inside the mounting tube (302); A rubber sealing sleeve (305) is fixedly fitted on the impurity box (202) and contacts one side of the retaining ring (304).

6. The screw compressor intake valve as described in claim 5, characterized in that, The rubber sealing sleeve (305) is movably sleeved on the connecting pipe (201) and in contact with the inner wall of the installation pipe (302).

7. A screw compressor inlet valve as claimed in claim 6, characterised in that The sealing assembly further includes: Inclined surface 1 (306) is arranged on the rubber sealing sleeve (305); Inclined surface two (307) is arranged inside the mounting tube (302) and corresponds to inclined surface one (306).

8. A screw compressor inlet valve as claimed in claim 7, characterised in that, The mounting structure includes: The threaded sleeve (4) is rotatably sleeved on the connecting pipe (201), and the threaded sleeve (4) is threaded on the outer surface of the mounting pipe (302); A sealing ring (401) is arranged inside the threaded sleeve (4) and contacts one end of the mounting tube (302).

9. A screw compressor inlet valve as claimed in claim 7, characterised in that, The mounting structure also includes a limiting component, which is arranged on the threaded sleeve (4) to limit the rotational position of the threaded sleeve (4).

10. The screw compressor intake valve as described in claim 9, characterized in that, The limiting component includes: The limiting ring (402) is fixedly sleeved on the connecting pipe (201); An annular groove (403) is formed inside the threaded sleeve (4), and the limiting ring (402) is rotatably installed inside the annular groove (403).

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