An end cover assembly for a compressor

Abstract

The utility model discloses a kind of end cover assemblies for compressor, including end cover, the outer wall of the lower part of end cover is fixedly installed with fixed ring, the outer wall of fixed ring is fixedly installed with lug plate, the upper end outer surface of lug plate is equipped with threaded hole, the threaded hole is penetrated to the lower end outer surface of lug plate, fixed bolt is threadedly connected in the threaded hole, the lower end of lug plate is equipped with annular mounting groove, second spiral spring is arranged in the annular mounting groove.The utility model discloses a kind of end cover assemblies for compressor, by the first spiral spring being set, provide the pre-tightening force of continuous sealing washer, so that sealing washer can continuously provide sealing, by the annular limit slot and circular rubber ring being set, further improve sealing, by the second spiral spring and movable ring being set, utilize the pre-tightening force of continuous fixed bolt provided by second spiral spring, improve the stability after fixed bolt installation, eliminate the looseness after threaded connection.

Description

Technical Field

[0001] This utility model relates to the field of compressor parts technology, specifically to an end cover assembly for a compressor. Background Technology

[0002] As a critical piece of equipment in the industrial sector, the sealing performance and installation stability of the compressor's end cover assembly directly affect the equipment's operating efficiency and service life. Traditional compressor end covers are typically fixed with bolts and statically sealed with sealing rings. However, during actual operation, compressors are subjected to dynamic loads such as vibration, temperature changes, and pressure fluctuations over extended periods, which can easily lead to the following problems:

[0003] 1. Loose bolts: Due to mechanical vibration and alternating loads, threaded connections are prone to loosening, which leads to a decrease in the preload between the end cap and the body, resulting in seal failure and gas or liquid leakage.

[0004] 2. Degradation of sealing performance: Traditional sealing rings (such as O-rings) are prone to plastic deformation or wear after long-term pressure, losing their elasticity compensation ability and making it difficult to maintain a stable sealing effect.

[0005] Therefore, we propose an end cap assembly for compressors. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the shortcomings of the prior art, this utility model provides an end cover assembly for a compressor, which facilitates the provision of continuous preload force to the fixing bolts and sealing gaskets, improves sealing performance and installation stability, and can effectively solve the problems in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an end cover assembly for a compressor, comprising an end cover, a fixing ring fixedly installed on the outer wall of the lower part of the end cover, an ear plate fixedly installed on the outer wall of the fixing ring, a threaded hole opened on the upper outer surface of the ear plate, the threaded hole penetrating to the lower outer surface of the ear plate, a fixing bolt threadedly connected in the threaded hole, an annular mounting groove opened at the lower end of the ear plate, a second helical spring disposed in the annular mounting groove, a movable ring fixedly installed on the lower outer surface of the second helical spring, an annular groove opened on the lower outer surface of the fixing ring, a first helical spring disposed in the annular groove, a sealing washer fixedly installed on the lower outer surface of the first helical spring, an annular limiting groove opened on the upper part of both the inner and outer walls of the sealing washer, a circular rubber ring installed in the annular limiting groove, one side of the circular rubber ring penetrating to the outside of the annular limiting groove and contacting and pressing with the annular groove.

[0010] Preferably, the upper outer surface of the second helical spring is fixedly connected to the upper outer surface of the annular mounting groove.

[0011] Preferably, the outer wall of the movable ring is slidably connected to the annular mounting groove, and the upper outer surface of the movable ring is elastically connected to the upper end of the annular mounting groove through a second helical spring.

[0012] Preferably, there are multiple sets of the first helical springs, which are fixed at equal intervals between the upper outer surface of the sealing gasket and the top of the annular groove. The outer wall of the sealing gasket and the annular groove are slidably connected, and the upper outer surface of the sealing gasket is elastically connected to the top of the annular groove through the first helical springs.

[0013] Preferably, the multiple sets of first helical springs are arranged in a ring array, and the elastic coefficient of each set of springs is 5-15 N / mm. When all the first helical springs work together, they provide a total sealing pressure of 60-200 N for the sealing gasket.

[0014] Preferably, the second helical spring is a single spring with an elastic coefficient of 30-50 N / mm, so that the movable ring applies a preload of 80-150 N to the fixing bolt.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides an end cap assembly for a compressor, which has the following advantages:

[0017] 1. This end cover assembly for a compressor, by setting multiple sets of first helical springs in the annular groove, enables the sealing gasket to be continuously subjected to elastic preload. Even under vibration or thermal deformation conditions, it can still fit tightly against the compressor body, avoiding sealing failure caused by loose bolts or material aging. The annular limiting grooves on the inner and outer walls of the sealing gasket and the circular rubber ring form a double sealing structure, further blocking the leakage path and significantly improving sealing reliability.

[0018] 2. In this end cover assembly for a compressor, a second helical spring and a movable ring are provided in the annular mounting groove of the ear plate. When the fixing bolt is tightened, the movable ring is pressed upward and compresses the spring. Its reverse elastic force continues to act on the bolt head, providing a dynamic preload of 80-150N, which effectively counteracts the loosening of the threads caused by vibration. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an end cover assembly for a compressor according to the present invention.

[0020] Figure 2This is a partial structural diagram of an end cap assembly for a compressor according to the present invention.

[0021] Figure 3 This is a side cross-sectional view of a retaining ring in an end cover assembly for a compressor according to the present invention.

[0022] Figure 4 This is a side cross-sectional view of the ear plate in the end cover assembly for a compressor according to the present invention.

[0023] In the diagram: 1. End cap; 2. Retaining ring; 3. Ear plate; 4. Fixing bolt; 5. Annular groove; 6. First helical spring; 7. Sealing gasket; 8. Annular limiting groove; 9. Circular rubber ring; 10. Threaded hole; 11. Annular mounting groove; 12. Second helical spring; 13. Movable ring. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] This embodiment is an end cap assembly for a compressor.

[0026] like Figure 1-4 As shown, the device includes an end cap 1. A fixing ring 2 is fixedly installed on the lower outer wall of the end cap 1. An ear plate 3 is fixedly installed on the outer wall of the fixing ring 2. A threaded hole 10 is opened on the upper outer surface of the ear plate 3. The threaded hole 10 extends to the lower outer surface of the ear plate 3. A fixing bolt 4 is threaded into the threaded hole 10. An annular mounting groove 11 is opened at the lower end of the ear plate 3. A second helical spring 12 is installed in the annular mounting groove 11. A movable ring 13 is fixedly installed on the lower outer surface of the second helical spring 12. An annular groove 5 is opened on the lower outer surface of the fixing ring 2. A first helical spring 6 is installed in the annular groove 5. A sealing washer 7 is fixedly installed on the lower outer surface of the first helical spring 6. An annular limiting groove 8 is opened on the upper part of both the inner and outer walls of the sealing washer 7. A circular rubber ring 9 is installed in the annular limiting groove 8. One side of the circular rubber ring 9 extends to the outside of the annular limiting groove 8 and contacts and presses against the annular groove 5.

[0027] The upper outer surface of the second helical spring 12 is fixedly connected to the upper outer surface of the annular mounting groove 11; the outer wall of the movable ring 13 is slidably connected to the annular mounting groove 11, and the upper outer surface of the movable ring 13 is elastically connected to the upper end of the annular mounting groove 11 through the second helical spring 12; there are multiple sets of first helical springs 6, which are fixed at equal intervals between the upper outer surface of the sealing gasket 7 and the top of the annular groove 5, and the outer wall of the sealing gasket 7 is slidably connected to the annular groove 5, and the upper outer surface of the sealing gasket 7 is elastically connected to the top of the annular groove 5 through the first helical springs 6; the multiple sets of first helical springs 6 are arranged in a ring array, and the elastic coefficient of each set of springs is 5-15 N / mm. When all the first helical springs 6 work together, the sealing gasket 7 provides a total sealing pressure of 60-200 N; the second helical spring 12 is a single spring with an elastic coefficient of 30-50 N / mm, which causes the movable ring 13 to apply a preload of 80-150 N to the fixing bolt 4.

[0028] It should be noted that this utility model is an end cover assembly for a compressor. The end cover 1 described in this article belongs to the prior art and can be effectively known to those skilled in the art. Specific details will not be elaborated further. The fixed ring 2, when the fixing bolt 4 is installed, causes the movable ring 13 and the sealing washer 7 to be compressed. The movable ring 13 compresses the second helical spring 12 along the annular mounting groove 11, causing the movable ring 13 to enter the annular mounting groove 11. The sealing washer 7 compresses the first helical spring 6 along the annular groove 5. The reaction force of the first helical spring 6 ensures that the sealing washer 7 remains in close contact with the compressor body. The circular rubber ring 9 ensures close contact with the annular groove 5, further improving the sealing performance and preventing air from escaping through the gap between the sealing washer 7 and the annular groove 5. The reaction force of the second helical spring 12 provides continuous preload, increasing the stability of the connection between the fixing bolt 4 and the threaded hole 10, and eliminating loosening after the threaded connection of the fixing bolt 4.

[0029] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An end cover assembly for a compressor comprising an end cover (1), characterized in that: A fixing ring (2) is fixedly installed on the outer wall of the lower part of the end cap (1). An ear plate (3) is fixedly installed on the outer wall of the fixing ring (2). A threaded hole (10) is opened on the upper outer surface of the ear plate (3). The threaded hole (10) extends to the lower outer surface of the ear plate (3). A fixing bolt (4) is threaded into the threaded hole (10). An annular mounting groove (11) is opened at the lower end of the ear plate (3). A second helical spring (12) is provided in the annular mounting groove (11). The lower outer surface of the second helical spring (12) is... A movable ring (13) is fixedly installed on the surface. An annular groove (5) is opened on the lower outer surface of the fixed ring (2). A first helical spring (6) is provided in the annular groove (5). A sealing gasket (7) is fixedly installed on the lower outer surface of the first helical spring (6). An annular limiting groove (8) is opened on the upper part of both the inner and outer walls of the sealing gasket (7). A circular rubber ring (9) is installed in the annular limiting groove (8). One side of the circular rubber ring (9) extends through to the outside of the annular limiting groove (8) and contacts and presses against the annular groove (5).

2. An end cover assembly for a compressor according to claim 1, characterized in that: The upper outer surface of the second helical spring (12) is fixedly connected to the upper outer surface of the annular mounting groove (11).

3. A head cover assembly for a compressor as set forth in claim 2 wherein: The outer wall of the movable ring (13) is slidably connected to the annular mounting groove (11), and the upper outer surface of the movable ring (13) is elastically connected to the upper end of the annular mounting groove (11) through a second helical spring (12).

4. A head cover assembly for a compressor as set forth in claim 3 wherein: The number of the first helical springs (6) is multiple sets. The multiple sets of the first helical springs (6) are fixed at equal intervals between the upper outer surface of the sealing gasket (7) and the top of the annular groove (5). The outer wall of the sealing gasket (7) and the annular groove (5) are slidably connected. The upper outer surface of the sealing gasket (7) is elastically connected to the top of the annular groove (5) through the first helical springs (6).

5. A head cover assembly for a compressor as set forth in claim 4 wherein: The multiple sets of first helical springs (6) are arranged in a ring array. The elastic coefficient of each set of springs is 5-15 N / mm. When all the first helical springs (6) work together, the sealing gasket (7) provides a total sealing pressure of 60-200 N.

6. A head cover assembly for a compressor as set forth in claim 5 wherein: The second helical spring (12) is a single spring with an elastic coefficient of 30-50 N / mm, which causes the movable ring (13) to apply a preload of 80-150 N to the fixing bolt (4).

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