Shaft seal press-fitting equipment

Abstract

The utility model provides shaft seal press-fitting equipment, which belongs to the technical field of shaft seals and comprises a base, a fixing plate and a fixing frame, the fixing plate and the fixing frame are arranged on the base, a mounting seat is fixedly connected above the base, a compressor is placed on the base, a sliding rod is mounted on the outer wall of one side, close to the mounting seat, of the base, and a baffle ring is mounted on the outer wall of the sliding rod. And a top plate is mounted above the sliding rods. According to the utility model, the arranged positioning sleeve rod is connected with the shaft body into a whole in the downward sliding process, so that a subsequent shaft seal can be directly positioned and slide to the outside of the shaft body through the positioning sleeve rod, the situation that the shaft seal falls off from the clamping block, deviates and cannot be aligned with the shaft body is avoided, and the subsequent press-fitting accuracy is improved; the clamping groove in the clamping block is matched with the sleeve rod, in the downward sliding process, the shaft seal directly penetrates through the clamping ring to move downwards to complete follow-up press-fitting operation, press-fitting can be conducted on the shaft seal continuously and rapidly through continuous extension of the sleeve rod, and the efficiency of press-fitting of the shaft seal of the compressor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft seals, in particular to a shaft seal press-fitting device. Background Art

[0002] The shaft seal is a crucial component in a compressor. It must simultaneously seal both oil and gas, and must also be oil-resistant, wear-resistant, freeze-resistant, and self-lubricating. In some high-pressure air conditioning compressors, pressures often reach 3 to 10 MPa. For conventional shaft seals, such high pressures can cause the rubber lip to deform under pressure, making the sealing unstable. This also affects the sealing capability of the inner lip of the seal, leading to wear and oil leakage, ultimately reducing the mechanical efficiency of the entire compressor.

[0003] Conventional shaft seal press-fitting equipment for compressors is complex to operate, requiring multiple devices to position and press-fit the seal. This results in a discontinuous and inefficient press-fit process, as well as high drive power consumption, which increases production costs. Inventing a shaft seal press-fitting device to address these issues has become a pressing issue for those skilled in the art. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a shaft seal press-fitting device, which aims to solve the problem of low press-fitting efficiency of shaft seal press-fitting devices of common compressors.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a shaft seal press-fitting device, comprising a base, a fixing plate and a fixing frame arranged on the base, a mounting seat being fixedly connected to the top of the base, a compressor being placed on the base, a sliding rod being installed on an outer wall of a side of the base close to the mounting seat, a retaining ring being installed on the outer wall of the sliding rod, a top plate being installed above the sliding rod, and a hydraulic rod being installed on the upper end of the top plate;

[0007] An upper slide plate and a lower slide plate are respectively installed at both ends of the fixed plate, the inner walls of the upper slide plate and the lower slide plate are slidably connected to the outer wall of the sliding rod, a through hole is opened on the upper slide plate, a limit rod is installed on the outer wall of the lower slide plate, a first spring is sleeved on the outer wall of the limit rod, a connecting plate is installed on the upper end side wall of the first spring, and a sleeve rod is installed at one end of the connecting plate;

[0008] The fixing frame is installed on the side wall of the lower slide plate, and symmetrical guide rods are installed on the inner walls of both sides of the fixing frame. The outer walls of the two guide rods are sleeved with a second spring, and a clamping block is installed at one end of the second spring. A clamping groove is provided on one side of the clamping block, and an adjustment groove is provided on the upper surface of the two clamping blocks. A positioning sleeve rod is installed between the two clamping grooves, and a slot is provided at the bottom end of the positioning sleeve rod. A shaft seal is sleeved on the outer side of the positioning sleeve rod near the upper side of the clamping groove.

[0009] Preferably, the two ends of the sliding rod are fixedly connected to the outer walls of the base and the top plate respectively, the telescopic end of the hydraulic rod is slidably connected to the inner wall of the top plate, and the telescopic end of the hydraulic rod is fixedly connected to the upper outer wall of the connecting plate.

[0010] Preferably, the side walls at both ends of the first spring are fixedly connected to the outer wall of the lower slide plate and one side of the connecting plate respectively, and the first spring passes through the through hole in the upper slide plate.

[0011] Preferably, the upper end of the positioning sleeve is narrower and the lower end is wider, the connection between the upper and lower rods of the positioning sleeve is a frustum-shaped rod, and the inner wall of the slot is slidably connected to the outer wall of the shaft.

[0012] By adopting the above technical solution, the position of the shaft seal is limited by the positioning sleeve. When pressing, the hydraulic rod is started to extend, so that the lower connecting plate drives the fixed plate and the slides at both ends to move downward at the same time under the action of the first spring, so that the positioning sleeve and the shaft body are connected as a whole, which facilitates the subsequent shaft seal to be positioned and slid to the outside of the shaft body directly through the positioning sleeve, avoiding the situation where the shaft seal falls off the clamping block and deviates and cannot be aligned with the shaft body, thereby improving the accuracy of subsequent pressing.

[0013] Preferably, two groups of limit blocks slidably connected to the inner side walls of the clamping block are installed on the inner walls of both sides of the fixing frame, and a stopper is fixedly connected between the limit blocks on the same side.

[0014] Preferably, the outer wall of the guide rod is slidably connected to the inner wall of the clamping block, and the side walls at both ends of the second spring are fixedly connected to the fixing frame and one side of the clamping block respectively.

[0015] Preferably, the outer wall of the adjustment groove is slidably connected to the bottom end of the sleeve rod, and the inner wall of the sleeve rod is slidably connected to the outer wall of the positioning sleeve rod.

[0016] By adopting the above technical solution, when the hydraulic rod drives the positioning sleeve to insert into the outer side of the shaft body, if the hydraulic rod continues to be driven, the lower slide plate is held and fixed by the retaining ring, and the inner wall of the sleeve rod and the outer wall of the positioning sleeve rod continue to slide downward, and the shaft seal continues to slide downward on the outer side of the positioning sleeve rod until the sleeve rod moves to the bottom end. At this time, the shaft seal is separated from the positioning sleeve rod and sealed on the outer side of the lower shaft body, thereby completing the press-fitting of the shaft seal. The shaft seal can be press-fitted continuously and quickly, thereby improving the efficiency of the shaft seal press-fitting of the compressor.

[0017] The beneficial effects of the utility model are:

[0018] The arranged positioning sleeve is connected to the shaft body as a whole during the sliding process, so that the subsequent shaft seal can be directly positioned and slid to the outside of the shaft body through the positioning sleeve rod, thereby avoiding the shaft seal from falling off the clamping block and being offset and unable to align with the shaft body, thereby improving the accuracy of subsequent press-fitting. The clamping groove on the clamping block cooperates with the sleeve rod to directly move the shaft seal downward through the clamping ring during the sliding process to complete the subsequent press-fitting operation. The shaft seal can be press-fitted continuously and quickly through the continuous extension of the sleeve rod, thereby improving the efficiency of shaft seal press-fitting of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the initial structure of a shaft seal press-fitting device provided by an embodiment of the present utility model;

[0021] Figure 2 This is a shaft seal press-fitting device provided by the embodiment of the utility model Figure 1 A magnified view of the structure of the middle A area;

[0022] Figure 3 This is a cross-sectional view of a local area of ​​the initial structure of a shaft seal press-fitting device provided by an embodiment of the present utility model;

[0023] Figure 4 This is a shaft seal press-fitting device provided by the embodiment of the utility model Figure 3 Middle B is an enlarged view of the structure;

[0024] Figure 5 This is a schematic diagram of the press-fitting structure of a shaft seal press-fitting device provided by an embodiment of the present utility model;

[0025] Figure 6This is a cross-sectional view of a local area of ​​a press-fitting structure of a shaft seal press-fitting device provided by an embodiment of the present utility model;

[0026] Figure 7 This is a shaft seal press-fitting device provided by the embodiment of the utility model Figure 6 A magnified view of the structure of the middle C region.

[0027] In the figure: 1. base; 11. mounting seat; 12. slide rod; retaining ring 121; 13. top plate; 2. hydraulic rod; 3. fixing plate; 31. upper slide plate; 311. through hole; 32. lower slide plate; 321. limit rod; 4. first spring; 5. connecting plate; 6. sleeve rod; 7. fixing frame; 71. limit block; 72. stop block; 73. guide rod; 74. second spring; 8. clamping block; 81. clamping groove; 82. adjusting groove; 9. positioning sleeve rod; 91. slot; 10. compressor; 101. shaft; 110. shaft seal. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example, refer to Figure 1-Figure 7 A shaft seal press-fitting device includes a base 1 and a fixing plate 3 and a fixing frame 7 arranged on the base 1. A mounting seat 11 is fixedly connected to the top of the base 1. A compressor 10 is placed on the base 1. A sliding rod 12 is installed on the outer wall of the base 1 on one side close to the mounting seat 11. A retaining ring 121 is installed on the outer wall of the sliding rod 12. A top plate 13 is installed above the sliding rod 12. A hydraulic rod 2 is installed on the upper end of the top plate 13.

[0030] An upper slide plate 31 and a lower slide plate 32 are respectively installed at both ends of the fixed plate 3. The inner walls of the upper slide plate 31 and the lower slide plate 32 are slidably connected to the outer wall of the slide rod 12. A through hole 311 is opened on the upper slide plate 31, and a limit rod 321 is installed on the outer wall of the lower slide plate 32. The outer wall of the limit rod 321 is sleeved with a first spring 4. A connecting plate 5 is installed on the upper side wall of the first spring 4, and a sleeve rod 6 is installed at one end of the connecting plate 5.

[0031] The fixing frame 7 is installed on the side wall of the lower slide plate 32, and symmetrical guide rods 73 are installed on the inner walls of both sides of the fixing frame 7. The outer walls of the two guide rods 73 are sleeved with a second spring 74, and a clamping block 8 is installed at one end of the second spring 74. A clamping groove 81 is provided on one side of the clamping block 8, and an adjustment groove 82 is provided on the upper surface of the two clamping blocks 8. A positioning sleeve rod 9 is installed between the two clamping grooves 81, and a slot 91 is provided at the bottom end of the positioning sleeve rod 9. A shaft seal 110 is sleeved on the outer part of the positioning sleeve rod 9 near the upper side of the clamping groove 81.

[0032] Furthermore, the two ends of the slide rod 12 are fixedly connected to the outer walls of the base 1 and the top plate 13 respectively, the telescopic end of the hydraulic rod 2 is slidably connected to the inner wall of the top plate 13, the telescopic end of the hydraulic rod 2 is fixedly connected to the upper outer wall of the connecting plate 5, and the side walls of the first spring 4 at both ends are fixedly connected to the lower slide 32 and the outer wall of one side of the connecting plate 5 respectively. The first spring 4 passes through the through hole 311 in the upper slide 31. The upper end rod body of the positioning sleeve rod 9 is narrower and the lower end rod body is wider. The connection between the upper rod body and the lower rod body of the positioning sleeve rod 9 is a truncated cone-shaped rod body, and the inner wall of the slot 91 is slidably connected to the outer wall of the shaft body 101.

[0033] It should be noted that: before press-fitting the shaft seal 110, the shaft seal 110 is sleeved on the positioning sleeve 9 near the top of the clamping block 8, and the positioning sleeve 9 is used to limit the position of the shaft seal 110. When press-fitting, the hydraulic rod 2 is started to extend, so that the lower connecting plate 5 drives the fixed plate 3 and the slides at both ends to move downward at the same time under the action of the first spring 4. During the movement, the positioning sleeve 9 on the fixed frame 7 on one side slides downward with the clamping block 8 and is inserted into the outside of the shaft body 101, so that the positioning sleeve 9 and the shaft body 101 are connected as a whole, which facilitates the subsequent shaft seal 110 to be directly positioned and slid to the outside of the shaft body 101 through the positioning sleeve 9, thereby avoiding the shaft seal 110 from falling off the clamping block 8 and being offset and unable to align with the shaft body 101, thereby improving the accuracy of subsequent press-fitting.

[0034] Furthermore, two groups of limit blocks 71 are installed on the inner walls of both sides of the fixing frame 7, which are slidably connected to the inner walls of the clamping block 8. A stop block 72 is fixedly connected between the limit blocks 71 on the same side. The outer wall of the guide rod 73 is slidably connected to the inner wall of the clamping block 8. The side walls at both ends of the second spring 74 are respectively fixedly connected to one side of the fixing frame 7 and the clamping block 8. The outer wall of the adjusting groove 82 is slidably connected to the bottom end of the sleeve rod 6, and the inner wall of the sleeve rod 6 is slidably connected to the outer wall of the positioning sleeve rod 9.

[0035] It should be noted that: after the hydraulic rod 2 drives the positioning sleeve rod 9 to insert into the outside of the shaft body 101, if the hydraulic rod 2 is continued to be driven, the lower slide plate 32 is held and fixed by the retaining ring 121, and at the same time, the connecting plate 5 compresses the first spring 4 to continue to drive the sleeve rod 6 on one side to slide downward. At this time, the lower end of the sleeve rod 6 is against the shaft seal 110 on the outside of the positioning sleeve rod 9, and the adjusting grooves 82 on the clamping blocks 8 on both sides are squeezed downward to continue to move downward. The clamping blocks 8 on both sides squeeze the second springs 74 at both ends to slide toward both ends to disengage the clamping of the sleeve rod 6 until the sleeve rod 6 completely passes through the clamping blocks 8. The shaft seal 110 slides down to the inclined surface of the positioning sleeve rod 9, and the inner wall of the sleeve rod 6 that continues to press down slides with the outer wall of the positioning sleeve rod 9, and continues to slide downward on the outside of the positioning sleeve rod 9 against the shaft seal 110 until the sleeve rod 6 moves to the bottom. At this time, the shaft seal 110 is separated from the positioning sleeve rod 9 and sealed on the outside of the lower shaft body 101, thereby completing the press-fitting of the shaft seal 110. This mechanism can reduce the use of driving equipment and reduce production costs. At the same time, the shaft seal 110 can be press-fitted continuously and quickly, thereby improving the efficiency of press-fitting the shaft seal 110 of the compressor 10.

[0036] The working principle of this shaft seal pressing equipment:

[0037] The second springs 74 on both ends of the clamping blocks 8 squeeze the second springs 74 at both ends to slide toward both ends to disengage the clamping of the sleeve rod 6 until the sleeve rod 6 completely passes through the clamping blocks 8. At this time, the shaft seal 110 is placed on the positioning sleeve rod 9 above the clamping block 8 and the positioning sleeve rod 9 is used to limit the position of the shaft seal 110. After that, the second spring 74 is reset to make the clamping block 8 clamp the positioning sleeve rod 9 again, and then continue to drive the hydraulic rod 2 upward while driving the slide plate and the sleeve rod 6 to move upward as a whole to return to the initial height, which is convenient for subsequent replacement of the compressor 10 and replenishment of the shaft seal 110. The pressing mechanism can reduce the use of driving equipment and reduce production costs. At the same time, the shaft seal 110 can be pressed and installed continuously and quickly, thereby improving the efficiency of pressing the shaft seal 110 of the compressor 10.

[0038] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A shaft seal press-fitting device, comprising a base (1) and a fixing plate (3) and a fixing frame (7) arranged on the base (1), characterized in that: A mounting seat (11) is fixedly connected above the base (1), a compressor (10) is placed on the base (1), a sliding rod (12) is installed on the outer wall of the base (1) close to the mounting seat (11), a retaining ring (121) is installed on the outer wall of the sliding rod (12), a top plate (13) is installed above the sliding rod (12), and a hydraulic rod (2) is installed on the upper end of the top plate (13); An upper slide plate (31) and a lower slide plate (32) are respectively installed at both ends of the fixed plate (3), the inner walls of the upper slide plate (31) and the lower slide plate (32) are slidably connected to the outer wall of the slide rod (12), a through hole (311) is opened on the upper slide plate (31), a limiting rod (321) is installed on the outer wall of the lower slide plate (32), a first spring (4) is sleeved on the outer wall of the limiting rod (321), a connecting plate (5) is installed on the upper end side wall of the first spring (4), and a sleeve rod (6) is installed on one end of the connecting plate (5); The fixing frame (7) is installed on the side wall of the lower slide plate (32), and symmetrical guide rods (73) are installed on the inner walls of both sides of the fixing frame (7). The outer walls of the two guide rods (73) are sleeved with a second spring (74), and a clamping block (8) is installed on one end of the second spring (74). A clamping groove (81) is provided on one side of the clamping block (8), and an adjustment groove (82) is provided on the upper surface of the two clamping blocks (8). A positioning sleeve rod (9) is installed between the two clamping grooves (81), and a slot (91) is provided at the bottom end of the positioning sleeve rod (9). A shaft seal (110) is sleeved on the outer portion of the positioning sleeve rod (9) above the clamping groove (81).

2. The shaft seal press-fitting device according to claim 1, characterized in that: The two ends of the sliding rod (12) are fixedly connected to the outer walls of the base (1) and the top plate (13), respectively; the telescopic end of the hydraulic rod (2) is slidably connected to the inner wall of the top plate (13); and the telescopic end of the hydraulic rod (2) is fixedly connected to the upper outer wall of the connecting plate (5).

3. The shaft seal press-fitting device according to claim 2, characterized in that: The side walls at both ends of the first spring (4) are fixedly connected to the lower slide plate (32) and the outer wall of one side of the connecting plate (5), respectively. The first spring (4) passes through the through hole (311) in the upper slide plate (31).

4. The shaft seal press-fitting device according to claim 3, characterized in that: The upper end of the positioning sleeve rod (9) is narrower and the lower end is wider. The connection between the upper and lower rods of the positioning sleeve rod (9) is a truncated cone-shaped rod. The inner wall of the slot (91) and the outer wall of the shaft body (101) are slidably connected.

5. The shaft seal press-fitting device according to claim 1, characterized in that: Two sets of limit blocks (71) slidably connected to the inner side walls of the clamping block (8) are installed on the inner walls of both sides of the fixing frame (7), and a stop block (72) is fixedly connected between the limit blocks (71) on the same side.

6. The shaft seal press-fitting device according to claim 5, characterized in that: The outer wall of the guide rod (73) is slidably connected to the inner wall of the clamping block (8), and the side walls at both ends of the second spring (74) are fixedly connected to the fixing frame (7) and one side of the clamping block (8), respectively.

7. The shaft seal press-fitting device according to claim 6, characterized in that: The outer wall of the adjustment groove (82) is slidably connected to the bottom end of the sleeve rod (6), and the inner wall of the sleeve rod (6) is slidably connected to the outer wall of the positioning sleeve rod (9).

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