A compressor rotor sealing mechanism

Abstract

The present invention discloses a compressor rotor sealing mechanism, comprising a cylinder body, a first rotating shaft, a second rotating shaft and a rotor, wherein a sliding vane is slidably arranged on the cylinder body, and the sliding vane abuts against the rotor; a sliding plate is slidably arranged on the cylinder body, and a square tube is fixedly arranged on the sliding plate. When the sliding vane is worn, not only can the sliding vane still abut and seal against the rotor, but also, under the action of the abutment member, the sliding vane enables the first inclined plane rod to push the second inclined plane rod, so that the locking block is disengaged from the locking groove, the compensating member is released, the compensating member pushes the compensation block, and then the abutment member is compressed, and at the same time the locking block is engaged with the next locking groove, so as to complete the locking of the compensation block, thereby completing the compensation of the sliding vane through the compensation member when the sliding vane is worn, and ensuring the abutment force between the sliding vane and the rotor, avoiding the phenomenon that the abutment force is too large, causing excessive wear, or the abutment force is too small, resulting in poor sealing performance, thereby improving the working efficiency of the compressor.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a compressor rotor sealing mechanism. Background Art

[0002] A compressor is a fluid machine that boosts low-pressure gas to high-pressure gas. It is widely used in many fields, including refrigeration systems, industrial production, and air-conditioning systems.

[0003] Among them, the rotary compressor is one of the most common compressors. Its working principle is: the vane is always in contact with the rotor under the action of the spring to form a line contact seal. The rotor rolls along the inner wall of the cylinder driven by the eccentric shaft, absorbing and compressing gas over and over again.

[0004] The shortcomings of the existing technology are: because the rotor is eccentrically arranged, when the rotor rolls along the inner wall of the cylinder, it will push the sliding vane to slide back and forth, and cause the spring between the sliding vane and the cylinder body to be compressed and extended. When the spring is compressed, the sliding vane will increase the abutment force between the sliding vane and the rotor under the action of its restoring force, resulting in increased wear, and after long-term use, when the sliding vane is worn to a certain extent, the abutment force between the sliding vane and the rotor is reduced, resulting in a reduced sealing effect between the rotor and the sliding vane, thereby affecting the working efficiency of the compressor. Summary of the invention

[0005] The object of the present invention is to provide a compressor rotor sealing mechanism to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A compressor rotor sealing mechanism comprises a cylinder body, a first rotating shaft, a second rotating shaft and a rotor, wherein a sliding vane is slidably arranged on the cylinder body, and the sliding vane abuts against the rotor;

[0008] A sliding plate is slidably provided on the cylinder body, a square tube is fixedly provided on the sliding plate, a compensation block is slidably provided on the square tube, an abutment piece is provided between the compensation block and the sliding plate, a compensation piece is provided between the compensation block and the sliding plate, a fixed tube is fixedly provided on the compensation block, a locking block is provided on the fixed tube, a plurality of locking grooves are provided on the square tube, the locking block selectively engages with the plurality of locking grooves, a second inclined plane rod is fixedly provided on the locking block, a first inclined plane rod is provided on the sliding plate, the first inclined plane rod and the second inclined plane rod are both provided with inclined planes, and abut against each other through the inclined planes.

[0009] Preferably, the abutment member is an abutment spring, and two ends of the abutment spring are fixedly connected to the sliding plate and the compensation block respectively.

[0010] Preferably, the compensation member is a plurality of compensation springs, and two ends of the compensation springs are fixedly connected to the sliding plate and the compensation block respectively.

[0011] Preferably, a locking spring is provided between the locking block and the fixing tube, and two ends of the locking spring are fixedly connected to the locking block and the fixing tube respectively.

[0012] Preferably, a reciprocating block is slidably provided on the cylinder body, a connecting rope is provided between the reciprocating block and the sliding plate, and two ends of the connecting rope are fixedly connected to the sliding plate and the reciprocating block respectively.

[0013] Preferably, a first connecting rod is fixedly provided on the first rotating shaft, a second connecting rod is fixedly provided on the second rotating shaft, a push rod is rotatably provided on the reciprocating block, and both the first connecting rod and the second connecting rod are rotatably connected to the push rod.

[0014] Preferably, a plurality of reciprocating springs are arranged between the sliding plate and the cylinder body, and two ends of the reciprocating springs are fixedly connected to the sliding plate and the cylinder body respectively.

[0015] Preferably, a pulley is rotatably provided on the cylinder body, and the connecting rope passes around the pulley.

[0016] Preferably, the directions of the first connecting rod and the second connecting rod are opposite to the eccentric direction of the rotor.

[0017] Preferably, the elastic coefficient of the compensation spring is greater than that of the abutment spring.

[0018] In the above technical solution, the compressor rotor sealing mechanism provided by the present invention has the beneficial effects of:

[0019] By providing an abutment, when the sliding vane is worn, not only can the sliding vane still be abutted and sealed with the rotor, but also, under the action of the abutment, the sliding vane causes the first inclined rod to push the second inclined rod, thereby disengaging the locking block from the locking groove, releasing the compensating member, causing the compensating member to push the compensation block, and then compressing the abutment, while causing the locking block to engage with the next locking groove to complete the locking of the compensation block. In this way, when the sliding vane is worn, the sliding vane is compensated by the compensating member, and the abutment force between the sliding vane and the rotor is guaranteed, avoiding excessive abutment force resulting in excessive wear, or too small abutment force resulting in poor sealing performance, thereby improving the working efficiency of the compressor.

[0020] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0021] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the internal structure of a cylinder provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the bottom structure of a cylinder provided in an embodiment of the present invention;

[0025] Figure 3 A top view of a cylinder provided by an embodiment of the present invention;

[0026] Figure 4 The embodiment of the present invention provides Figure 3 A in the enlarged view;

[0027] Figure 5 A schematic diagram of the structure of a compensation block and a sliding plate provided in an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the locking block and the fixing tube structure provided in an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of a square tube structure provided in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Cylinder body; 11. First rotating shaft; 12. Second rotating shaft; 13. First connecting rod; 14. Second connecting rod; 15. Reciprocating block; 16. Push rod; 17. Rotor; 2. Slide; 21. First inclined rod; 22. Abutment spring; 3. Compensation block; 31. Fixed tube; 32. Locking block; 33. Second inclined rod; 34. Locking spring; 35. Compensation spring; 4. Sliding plate; 41. Square tube; 42. Locking groove; 43. Reciprocating spring; 44. Connecting rope; 5. Pulley. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] Please refer to 1-7, a compressor rotor sealing mechanism includes a cylinder body 1, a first rotating shaft 11, a second rotating shaft 12 and a rotor 17, a sliding vane 2 is slidably arranged on the cylinder body 1, and the sliding vane 2 abuts against the rotor 17; a sliding plate 4 is slidably arranged on the cylinder body 1, a square tube 41 is fixedly arranged on the sliding plate 4, a compensation block 3 is slidably arranged on the square tube 41, an abutment member is arranged between the compensation block 3 and the sliding vane 2, a compensation member is arranged between the compensation block 3 and the sliding plate 4, a fixed tube 31 is fixedly arranged on the compensation block 3, a locking block 32 is arranged on the fixed tube 31, a plurality of locking grooves 42 are arranged on the square tube 41, the locking block 32 is selectively engaged with the plurality of locking grooves 42, a second inclined rod 33 is fixedly arranged on the locking block 32, and a first inclined rod 21 is arranged on the sliding vane 2 The first inclined plane rod 21 and the second inclined plane rod 33 are both provided with inclined planes, and abut against each other through the inclined planes. The abutting member is an abutting spring 22, and the two ends of the abutting spring 22 are respectively fixedly connected to the sliding plate 2 and the compensation block 3. The compensating member is a plurality of compensation springs 35, and the two ends of the compensation spring 35 are respectively fixedly connected to the sliding plate 4 and the compensation block 3. The compensation spring 35 and the abutting spring 22 are both in a compressed state. After the sliding plate 2 is worn, the abutting spring 22 rebounds and pushes the sliding plate 2, so that the sliding plate 2 and the rotor 17 maintain abutment and sealing. When the sliding plate 2 is pushed by the abutting spring 22, the first inclined plane rod 21 pushes the second inclined plane rod 33 through the inclined plane, so that the second inclined plane rod 33 slides in the fixed tube 31 with the locking block 32, and the locking block 32 is disengaged from the locking groove 42. , at this time, the compensation block 3 loses the locking effect of the engagement between the lock block 32 and the lock groove 42. Under the action of the rebound force of the compensation spring 35, the compensation block 3 slides and compresses the abutment spring 22 to ensure that the abutment spring 22 applies a certain pressure to the slide 2 to avoid the abutment force between the slide 2 and the rotor 17 from becoming smaller, thereby affecting the abutment sealing effect between the slide 2 and the rotor 17. In the sliding process of the compensation block 3, the lock block 32 engages with the next lock groove 42 to complete the locking of the compensation block 3; the normal state of the abutment spring 22 is a compressed state, and its rebound force makes the slide 2 abut against the rotor 17. When the abutment spring 22 is extended, its rebound force is reduced, resulting in a reduction in the abutment force between the slide 2 and the rotor 17. When the spring 35 pushes the compensation block 3 to slide, the abutment spring 22 is compressed again after rebounding, that is, the abutment force between the slide 2 and the rotor 17 is restored to ensure the abutment sealing effect between the slide 2 and the rotor 17 after compensation; when the slide 2 is slightly worn, the abutment spring 22 rebounds slightly to make the slide 2 abut against the rotor 17. At this time, the abutment force between the slide 2 and the rotor 17 is slightly reduced, and the abutment sealing between the slide 2 and the rotor 17 is not affected; when the slide 2 is worn to the point where the abutment spring 22 rebounds and pushes the slide 2, so that the first inclined plane rod 21 pushes the second inclined plane rod 33 through the inclined plane, so that the locking block 32 is disengaged from the locking groove 42, the compensation spring 35 pushes the compensation block 3 to compress the abutment spring 22.

[0034] Specifically, a locking spring 34 is provided between the locking block 32 and the fixed tube 31, and the two ends of the locking spring 34 are fixedly connected to the locking block 32 and the fixed tube 31 respectively. When the abutment spring 22 rebounds and pushes the slide 2, the first inclined rod 21 pushes the second inclined rod 33 through the inclined surface, so that the second inclined rod 33 slides with the locking block 32 and disengages from the locking groove 42. At this time, the locking block 32 slides to squeeze the locking spring 34. When the compensation spring 35 pushes the compensation block 3 to slide, the second inclined rod 33 and the first inclined rod 2 1 is restored to the state of contacting with the inclined surface, and under the action of the rebound force of the locking spring 34, the locking block 32 is engaged with the locking groove 42 one unit forward to complete the locking of the compensation block 3. The engagement of the locking block 32 with the locking groove 42 avoids the slide plate 2 from being affected by the rebound force of the compensation spring 35, and by providing a plurality of locking grooves 42, the slide plate 2 can be compensated for multiple times by the compensation spring 35 after being worn, until the compensation spring 35 rebounds completely, thereby greatly improving the durability of the slide plate 2.

[0035] In an embodiment further provided by the present invention, a reciprocating block 15 is slidably provided on the cylinder body 1, and a connecting rope 44 is provided between the reciprocating block 15 and the sliding plate 4, and both ends of the connecting rope 44 are fixedly connected to the sliding plate 4 and the reciprocating block 15 respectively. When the reciprocating block 15 slides, the connecting rope 44 is pulled to make the sliding plate 4 slide, and the sliding plate 4 drives the sliding vane 2 to slide, so that the sliding vane 2 actively slides with the rolling of the rotor 17, avoiding the process that the eccentrically set rotor 17 needs to push the sliding vane 2 to slide during the rolling process, further stabilizing the abutment force between the sliding vane 2 and the rotor 17, and improving the service life of the sliding vane 2.

[0036] Furthermore, a first connecting rod 13 is fixedly provided on the first rotating shaft 11, a second connecting rod 14 is fixedly provided on the second rotating shaft 12, a push rod 16 is rotatably provided on the reciprocating block 15, the first connecting rod 13 and the second connecting rod 14 are both rotatably connected to the push rod 16, and when the first rotating shaft 11 drives the first connecting rod 13 to rotate, the reciprocating block 15 is driven to slide back and forth through the push rod 16, and the second connecting rod 14 and the second rotating shaft 12 are rotated.

[0037] Furthermore, a plurality of reciprocating springs 43 are arranged between the sliding plate 4 and the cylinder body 1, and the two ends of the reciprocating spring 43 are fixedly connected to the sliding plate 4 and the cylinder body 1 respectively. When the reciprocating block 15 slides and the connecting rope 44 is loosened, the reciprocating spring 43 stretches, and the reciprocating block 15 slides and pulls the connecting rope 44 to shorten the reciprocating spring 43. The reciprocating sliding of the sliding plate 4 is controlled by the sliding of the reciprocating block 15 to retract and release the connecting rope 44, and the contraction and rebound of the reciprocating spring 43, so as to control the sliding of the sliding sheet 2.

[0038] In an embodiment further provided by the present invention, a pulley 5 is rotatably provided on the cylinder body 1, and the connecting rope 44 passes around the pulley 5. By providing the pulley 5, the connecting rope 44 passes around the pulley 5 for turning, so that the reciprocating block 15 is more stable when the connecting rope 44 is retracted and released.

[0039] In the embodiment provided by the present invention, the first connecting rod 13 and the second connecting rod 14 are directed in the opposite direction to the eccentric direction of the rotor 17. Figure 1 and Figure 2 It is observed that at this time, the eccentric direction of the rotor 17 is opposite to the directional position of the first connecting rod 13 and the second connecting rod 14. At this time, if the compressor is started, the first rotating shaft 11 drives the rotor 17 to rotate. At this time, the first connecting rod 13 will drive the push rod 16 to push the reciprocating block 15, and the connecting rope 44 will be loosened, so that the reciprocating spring 43 pushes the sliding plate 4, so that the sliding plate 4 extends with the sliding vane 2, so that when the rotor 17 rotates, the sliding vane 2 and the rotor 17 are always in a state of abutment and sealing.

[0040] Specifically, the elastic coefficient of the compensation spring 35 is greater than that of the abutment spring 22. The compensation spring 35 and the abutment spring 22 are initially in a compressed state. After the slide 2 is worn, the abutment spring 22 rebounds. After the compensation block 3 is unlocked, because the elastic coefficient of the compensation spring 35 is greater than that of the abutment spring 22, the compensation spring 35 is able to push the compensation block 3 to slide and compress the abutment spring 22 during the rebound process.

[0041] It should be noted that the rotor 17 and the slide 2 are always in an abutment state. If there is a slight fluctuation in the abutment between the rotor 17 and the slide 2 during operation, it can be buffered by the abutment spring 22. Only when the first inclined rod 21 pushes the second inclined rod 33 and the second inclined rod 33 slides to the point where the locking block 32 is disengaged from the locking groove 42, the compensation block 3 will be unlocked and the compensation spring 35 will rebound.

[0042] In the present invention, the driving method of the first rotating rod mentioned, and the rolling of the rotor 17 in the cylinder body 1 to complete the process of intake, compression and exhaust, as well as the abutment seal between the vane 2 and the rotor 17, namely "line contact seal" are all prior arts, and their operation methods and the technical effects brought about are common knowledge and conventional technical means known to technicians in this field, and will not be elaborated in detail.

[0043] Working principle: When the compressor is working, the first rotating shaft 11 and the second rotating shaft 12 rotate, and drive the rotor 17 to roll in the cylinder body 1. While the first rotating shaft 11 and the second rotating shaft 12 rotate, the push rod 16 is driven by the first connecting rod 13 and the second connecting rod 14, so that the push rod 16 and the reciprocating block 15 slide back and forth. When the reciprocating block 15 slides, the connecting rope 44 is retracted and released. By retracting and releasing the connecting rope 44 and extending and retracting the reciprocating spring 43, the sliding plate 4 is controlled to slide. The slide 2 is moved so that the slide plate 2 slides with the rolling of the rotor 17, and under the action of the abutment spring 22, it abuts and seals with the rotor 17; because the abutment spring 22 is initially in a compressed state, after the slide plate 2 is worn to a certain extent, the slide plate 2 is stretched under the action of the abutment spring 22, and the abutment seal between the slide plate 2 and the rotor 17 is not affected; when the slide plate 2 is seriously worn, the abutment spring 22 stretches the slide plate 2 more, and at this time, the first inclined surface rod 21 pushes the second inclined surface rod 33 through the inclined surface, so that the locking block 32 slides and disengages from the locking groove 42, and at this time, the compensation block 3 loses the locking effect of the locking block 32 and the locking groove 42, because the compensation spring 35 is initially in a compressed state, and the elastic coefficient of the compensation spring 35 is greater than the abutment spring 22, at this time, the compensation spring 35 rebounds, pushes the compensation block 3 to slide, and squeezes the abutment spring 22 after rebounding, so that it returns to a compressed state, that is, the compensation block 3 slides in the square tube 41, and the abutment spring 22 is compressed by the compensation spring 35, so that To avoid the phenomenon that the abutment force between the sliding plate 2 and the rotor 17 is reduced due to the rebound of the abutment spring 22 after wear, and after the compensation block 3 slides to compress the abutment spring 22, the locking block 32 slides with the fixing tube 31 to the locking groove 42 one unit forward, and under the action of the locking spring 34, the locking block 32 is engaged with it to fix the compensation block 3, so that the compensation of the sliding plate 2 is completed, and the abutment force between the sliding plate 2 and the rotor 17 is ensured to be neither too large nor too small.

[0044] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A compressor rotor sealing mechanism, comprising a cylinder body (1), a first rotating shaft (11), a second rotating shaft (12) and a rotor (17), characterized in that: A sliding plate (2) is slidably provided on the cylinder body (1), and the sliding plate (2) abuts against the rotor (17); A sliding plate (4) is slidably arranged on the cylinder body (1), a square tube (41) is fixedly arranged on the sliding plate (4), a compensation block (3) is slidably arranged on the square tube (41), an abutment member is arranged between the compensation block (3) and the sliding plate (2), a compensation member is arranged between the compensation block (3) and the sliding plate (4), a fixed tube (31) is fixedly arranged on the compensation block (3), a locking block (32) is arranged on the fixed tube (31), the square tube (41) is provided with a plurality of locking grooves (42), the locking block (32) selectively engages with the plurality of locking grooves (42), a second inclined rod (33) is fixedly arranged on the locking block (32), a first inclined rod (21) is arranged on the sliding plate (2), the first inclined rod (21) and the second inclined rod (33) are both provided with inclined surfaces and abut against each other through the inclined surfaces; The abutment member is an abutment spring (22), and two ends of the abutment spring (22) are respectively fixedly connected to the slide (2) and the compensation block (3); The compensating member is a plurality of compensating springs (35), and two ends of the compensating springs (35) are respectively fixedly connected to the sliding plate (4) and the compensating block (3); A locking spring (34) is provided between the locking block (32) and the fixing tube (31), and two ends of the locking spring (34) are respectively fixedly connected to the locking block (32) and the fixing tube (31); A reciprocating block (15) is slidably disposed on the cylinder body (1), a connecting rope (44) is disposed between the reciprocating block (15) and the sliding plate (4), and two ends of the connecting rope (44) are respectively fixedly connected to the sliding plate (4) and the reciprocating block (15); A first connecting rod (13) is fixedly arranged on the first rotating shaft (11), a second connecting rod (14) is fixedly arranged on the second rotating shaft (12), a push rod (16) is rotatably arranged on the reciprocating block (15), and the first connecting rod (13) and the second connecting rod (14) are both rotatably connected to the push rod (16); A plurality of reciprocating springs (43) are arranged between the sliding plate (4) and the cylinder body (1), and two ends of the reciprocating springs (43) are fixedly connected to the sliding plate (4) and the cylinder body (1), respectively; A pulley (5) is rotatably provided on the cylinder body (1), and the connecting rope (44) passes around the pulley (5); After the slide plate (2) is worn, it is compensated multiple times by the compensation spring (35) until the compensation spring (35) fully rebounds; The sliding vane (2) actively slides as the rotor (17) rolls, thereby avoiding the need for the eccentrically arranged rotor (17) to push the sliding vane (2) to slide during the rolling process, and further stabilizing the abutment force between the sliding vane (2) and the rotor (17).

2. A compressor rotor sealing mechanism according to claim 1, characterized in that: The first connecting rod (13) and the second connecting rod (14) are directed in the opposite direction to the eccentric direction of the rotor (17).

3. A compressor rotor sealing mechanism according to claim 1, characterized in that: The elastic coefficient of the compensation spring (35) is greater than that of the abutment spring (22).

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