Shaft seal compensator

Abstract

The utility model belongs to the technical field of low-pressure cylinder machine body shaft seal devices, and discloses a shaft seal compensator. The shaft seal compensator comprises a shaft seal compensator body and an installation structure, the shaft seal compensator body is arranged on an output shaft of the low-pressure cylinder machine body in a sleeving mode, and the diameter of the portion, wrapped by the shaft seal compensator body, of the output shaft is larger than that of the portion, away from the low-pressure cylinder machine body, of the shaft seal compensator body. The mounting structure comprises a driving part and a pushing part, the driving part is fixed to the side, close to the output shaft, of the low-pressure cylinder body, the output end of the driving part is connected with the pushing part, the pushing part abuts against the side, close to the low-pressure cylinder body, of the shaft seal compensator body, and the driving part can drive the pushing part to move in the direction away from the low-pressure cylinder body in the axial direction of the output shaft. The shaft seal compensator body is pushed to move in the direction away from the low-pressure cylinder machine body in the axial direction of the output shaft. The shaft seal compensator can be quickly disassembled from the output shaft through the mounting structure, the disassembly operation is simple, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure cylinder body shaft sealing devices, in particular to a shaft sealing compensator. Background Art

[0002] A shaft seal is a friction seal or stuffing box used to prevent fluid leakage between the shaft and bearings of compressors or other fluid conveying equipment. It is also a sealing device installed to prevent leakage between the pump shaft and the housing. Common shaft seal types include packing seals, mechanical seals, and dynamic seals.

[0003] The shaft seal structure is composed of high-precision parts. It can only achieve good sealing performance under correct and reasonable operating conditions. However, due to the complex operating conditions and the complex sealing structure, the performance of the mechanical seal is easily damaged. Therefore, the shaft seal structure must be frequently disassembled for maintenance, repair, or replacement. However, the disassembly operation of the shaft seal structure in the existing technology is complicated and labor-intensive.

[0004] Therefore, it is urgent to propose a shaft seal compensator to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a shaft seal compensator, which is easy to disassemble and save labor costs.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A shaft seal compensator, comprising:

[0008] a shaft seal compensator body, wherein the shaft seal compensator body is sleeved on the output shaft of the low-pressure cylinder body, and the diameter of the portion of the output shaft wrapped by the shaft seal compensator body is larger than the diameter of the output shaft located on the side of the shaft seal compensator body facing away from the low-pressure cylinder body;

[0009] The mounting structure includes a driving member and a pushing member, the driving member is fixed to the side of the low-pressure cylinder body close to the output shaft, the output end of the driving member is connected to the pushing member, and the pushing member abuts against the side of the shaft seal compensator body close to the low-pressure cylinder body. The driving member can drive the pushing member to move along the axial direction of the output shaft toward away from the low-pressure cylinder body to push the shaft seal compensator body to move along the axial direction of the output shaft toward away from the low-pressure cylinder body.

[0010] As an optional technical solution for the shaft seal compensator, the mounting structure further includes a fixing seat, which is sleeved on the output shaft, and whose two ends are respectively connected to the low-pressure cylinder body and the driving member.

[0011] As an optional technical solution for the shaft seal compensator, the fixing seat is bolted to the low-pressure cylinder body.

[0012] As an optional technical solution for the shaft seal compensator, the driving member is embedded in the fixing seat.

[0013] As an optional technical solution for the shaft seal compensator, the mounting structure also includes a screw and a sliding rod, one end of the screw is connected to the output end of the driving member, the other end of the screw is threadedly connected to the pushing member, one end of the sliding rod is fixedly connected to the fixed seat, and the other end of the sliding rod is movably connected to the pushing member, and the pushing member can slide axially along the output shaft on the sliding rod.

[0014] As an optional technical solution for the shaft seal compensator, the pushing member is a pushing plate, which is sleeved on the output shaft, the screw and the sliding rod are respectively located on opposite sides of the output shaft, and the shaft seal compensator body is located between the screw and the sliding rod. The diameter of the part of the output shaft wrapped by the pushing plate is equal to the diameter of the part of the output shaft wrapped by the shaft seal compensator body.

[0015] As an optional technical solution for the shaft seal compensator, an inner ring bearing is provided in the pushing plate, and the output shaft passes through the inner ring bearing and is connected to the pushing plate.

[0016] As an optional technical solution for the shaft seal compensator, the push disk is provided with a convex ring close to the shaft seal compensator body, and the end face of the convex ring abuts against the shaft seal compensator body.

[0017] As an optional technical solution of the shaft seal compensator, the diameter of the portion of the output shaft wrapped by the shaft seal compensator body is 0.5 cm larger than the diameter of the output shaft located on the side of the shaft seal compensator body away from the low-pressure cylinder body.

[0018] As an optional technical solution for the shaft sealing compensator, the shaft sealing compensator body includes a shaft sealing ring, a clamp and two swivels. The shaft sealing ring is sleeved on the output shaft, and the clamp is sleeved on the shaft sealing ring to lock the shaft sealing ring to the outer wall of the output shaft. The two swivels are both sleeved on the output shaft and are respectively located at both ends of the shaft sealing ring.

[0019] Advantages of the present utility model: The shaft seal compensator provided by the present utility model includes a shaft seal compensator body and an installation structure. The shaft seal compensator body is sleeved on the output shaft of the low-pressure cylinder body, and the diameter of the part of the output shaft wrapped by the shaft seal compensator body is larger than the diameter of the output shaft on the side of the shaft seal compensator body away from the low-pressure cylinder body. The installation structure includes a driving member and a pushing member. The driving member is fixed on the side of the low-pressure cylinder body close to the output shaft, the output end of the driving member is connected to the pushing member, and the pushing member abuts against the side of the shaft seal compensator body close to the low-pressure cylinder body. The driving member can drive the pushing member to move axially along the output shaft in a direction away from the low-pressure cylinder body, so as to push the shaft seal compensator body to move axially along the output shaft in a direction away from the low-pressure cylinder body. The shaft seal compensator moves to the part with a smaller diameter of the output shaft, so that the shaft seal compensator body can be disassembled from the output shaft. Compared with the prior art, this shaft seal compensator can be quickly disassembled from the output shaft through the installation structure, and the disassembly operation is simple and cost-saving. Description of the Drawings

[0020] Figure 1 is the assembly of the shaft seal compensator and the low-pressure cylinder body provided by the embodiment of the present utility model Figure 1 ;

[0021] Figure 2 is the assembly of the shaft seal compensator and the low-pressure cylinder body provided by the embodiment of the present utility model Figure 2 ;

[0022] Figure 3 is the sectional view of the assembly of the shaft seal compensator and the low-pressure cylinder body provided by the embodiment of the present utility model;

[0023] Figure 4 is the structural schematic diagram of the installation structure of the shaft seal compensator provided by the embodiment of the present utility model;

[0024] Figure 5 is the structural schematic diagram of the rotating ring of the shaft seal compensator body of the shaft seal compensator provided by the embodiment of the present utility model;

[0025] Figure 6 is the assembly drawing of the shaft seal ring and the clamp of the shaft seal compensator body of the shaft seal compensator provided by the embodiment of the present utility model.

[0026] In the figure:

[0027] 10. Low-pressure cylinder body; 20. Output shaft;

[0028] 100. Shaft seal compensator body; 110. Clamp; 120. Rotating ring; 200. Installation structure; 210. Driving member; 220. Pushing member; 230. Fixed seat; 240. Screw; 250. Slide bar. Detailed Embodiments

[0029] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0030] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0032] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, 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, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0033] The shaft seal compensator provided in this embodiment has simple disassembly operation and saves labor costs.

[0034] Specifically, as Figures 1 to 3As shown in the figure, the shaft seal compensator includes a shaft seal compensator body 100 and an installation structure 200. The shaft seal compensator body 100 is sleeved on the output shaft 20 of the low-pressure cylinder body 10. The diameter of the part of the output shaft 20 wrapped by the shaft seal compensator body 100 is larger than the diameter of the output shaft 20 on the side of the shaft seal compensator body 100 facing away from the low-pressure cylinder body 10. The installation structure 200 includes a driving member 210 and a pushing member 220. The driving member 210 is fixed on the side of the low-pressure cylinder body 10 close to the output shaft 20. The output end of the driving member 210 is connected to the pushing member 220. The pushing member 220 abuts against the side of the shaft seal compensator body 100 close to the low-pressure cylinder body 10. The driving member 210 can drive the pushing member 220 to move axially along the output shaft 20 in a direction away from the low-pressure cylinder body 10, so as to push the shaft seal compensator body 100 to move axially along the output shaft 20 in a direction away from the low-pressure cylinder body 10. The shaft seal compensator moves to the part with a smaller diameter of the output shaft 20, so that the shaft seal compensator body 100 can be disassembled from the output shaft 20. Compared with the prior art, this shaft seal compensator can be quickly disassembled from the output shaft 20 through the installation structure 200, and the disassembly operation is simple and cost-saving.

[0035] As Figure 4 shown, in order to increase the fixing strength of the installation structure 200, the installation structure 200 further includes a fixing seat 230. The fixing seat 230 is sleeved on the output shaft 20, and both ends of the fixing seat 230 are respectively connected to the low-pressure cylinder body 10 and the driving member 210.

[0036] Furthermore, the fixing seat 230 is bolted to the low-pressure cylinder body 10. Bolt connection is simple, has high connection strength and low cost.

[0037] In this embodiment, the fixing seat 230 is a fixing plate, and threaded holes are provided at the four corners of the fixing plate. The fixing plate and the low-pressure cylinder body 10 are connected through the four threaded holes at the four corners of the fixing plate.

[0038] Optionally, the driving member 210 is embedded in the fixing seat 230.

[0039] In this embodiment, the driving member 210 is a motor, and the motor is embedded in the fixing plate.

[0040] The installation structure 200 further includes a screw rod 240 and a sliding rod 250. One end of the screw rod 240 is connected to the output end of the driving member 210, and the other end of the screw rod 240 is threadedly connected to the pushing member 220. One end of the sliding rod 250 is fixedly connected to the fixing seat 230, and the other end of the sliding rod 250 is movably connected to the pushing member 220. The pushing member 220 can slide axially on the sliding rod 250 along the output shaft 20. When the driving member 210 works, the output end drives the screw rod 240 to rotate, and the screw rod 240 converts the rotation into a linear motion of the pushing member 220, and the driving method is simple.

[0041] To ensure smooth movement of the shaft seal compensator body 100, the pusher 220 is a pusher disc, which is sleeved onto the output shaft 20. The screw 240 and the slide bar 250 are located on opposite sides of the output shaft 20, with the shaft seal compensator body 100 located between the screw 240 and the slide bar 250. The diameter of the portion of the output shaft 20 wrapped by the pusher disc is equal to the diameter of the portion of the output shaft 20 wrapped by the shaft seal compensator body 100, preventing the large diameter of the output shaft 20 from hindering the pusher disc from moving toward the shaft seal compensator body 100.

[0042] In order to smoothly drive the pushing disk, an inner ring bearing is provided in the pushing disk, and the output shaft 20 passes through the inner ring bearing and is connected to the pushing disk.

[0043] In order to ensure full contact between the push disc and the shaft seal compensator body 100 and save materials, a convex ring is provided near the shaft seal compensator body 100 on the push disc, and the end face of the convex ring abuts against the shaft seal compensator body 100 .

[0044] The diameter of the portion of the output shaft 20 wrapped by the shaft seal compensator body 100 is 0.5 cm larger than the diameter of the output shaft 20 located on the side of the shaft seal compensator body 100 away from the low-pressure cylinder body 10, which can both meet the installation requirements and enable the shaft seal compensator body 100 to be quickly disassembled.

[0045] like Figure 5 and Figure 6 As shown, the shaft sealing compensator body 100 includes a shaft sealing ring, a clamp 110 and two swivels 120. The shaft sealing ring is sleeved on the output shaft 20. The clamp 110 is sleeved on the shaft sealing ring and can lock the shaft sealing ring to the outer wall of the output shaft 20. The two swivels 120 are both sleeved on the output shaft 20 and are respectively located at both ends of the shaft sealing ring.

[0046] In this embodiment, the swivel 120 is composed of two semicircular structures, and the two semicircles of the swivel 120 are fixed together by fastening bolts at the upper and lower ends thereof.

[0047] Two springs are fixed to the corresponding ends of the two rotating rings 120, and two grooves are also provided at the corresponding ends of the two rotating rings 120. The positions of the two springs on one rotating ring 120 correspond to the two grooves on the other rotating ring 120, and the positions of the two grooves on the rotating ring 120 correspond to the two springs on the other rotating ring 120. The other ends of the springs can be inserted into the corresponding grooves.

[0048] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A shaft seal compensator, characterized in that, include: A shaft seal compensator body (100), wherein the shaft seal compensator body (100) is sleeved on an output shaft (20) of a low-pressure cylinder body (10), and the diameter of a portion of the output shaft (20) wrapped by the shaft seal compensator body (100) is larger than the diameter of the output shaft (20) located on a side of the shaft seal compensator body (100) facing away from the low-pressure cylinder body (10); The mounting structure (200) includes a driving member (210) and a pushing member (220), wherein the driving member (210) is fixed to the side of the low-pressure cylinder body (10) close to the output shaft (20), the output end of the driving member (210) is connected to the pushing member (220), and the pushing member (220) abuts against the side of the shaft seal compensator body (100) close to the low-pressure cylinder body (10), and the driving member (210) can drive the pushing member (220) to move along the axial direction of the output shaft (20) in a direction away from the low-pressure cylinder body (10), so as to push the shaft seal compensator body (100) to move along the axial direction of the output shaft (20) in a direction away from the low-pressure cylinder body (10).

2. The shaft seal compensator according to claim 1, wherein The mounting structure (200) further includes a fixing seat (230), the fixing seat (230) being sleeved on the output shaft (20), and the two ends of the fixing seat (230) being respectively connected to the low-pressure cylinder body (10) and the driving member (210).

3. The shaft seal compensator according to claim 2, characterized in that, The fixing seat (230) is bolted to the low-pressure cylinder body (10).

4. The shaft seal compensator according to claim 2, characterized in that, The driving member (210) is embedded in the fixing seat (230).

5. The shaft seal compensator according to claim 2, characterized in that, The mounting structure (200) further includes a screw rod (240) and a slide rod (250), one end of the screw rod (240) being connected to the output end of the driving member (210), the other end of the screw rod (240) being threadedly connected to the pushing member (220), one end of the slide rod (250) being fixedly connected to the fixing seat (230), the other end of the slide rod (250) being movably connected to the pushing member (220), and the pushing member (220) being able to slide axially along the output shaft (20) on the slide rod (250).

6. The shaft seal compensator according to claim 5, characterized in that, The pushing member (220) is a pushing disk, which is sleeved on the output shaft (20). The screw (240) and the slide rod (250) are respectively located on opposite sides of the output shaft (20). The shaft seal compensator body (100) is located between the screw (240) and the slide rod (250). The diameter of the portion of the output shaft (20) wrapped by the pushing disk is equal to the diameter of the portion of the output shaft (20) wrapped by the shaft seal compensator body (100).

7. The shaft seal compensator according to claim 6, characterized in that, An inner ring bearing is provided in the pushing disk, and the output shaft (20) passes through the inner ring bearing and is connected to the pushing disk.

8. The shaft seal compensator according to claim 6, characterized in that, The push disk is provided with a convex ring close to the shaft seal compensator body (100), and the end surface of the convex ring abuts against the shaft seal compensator body (100).

9. The shaft seal compensator according to claim 1, characterized in that, The diameter of the part of the output shaft (20) wrapped by the shaft seal compensator body (100) is 0.5 cm larger than the diameter of the output shaft (20) on the side of the shaft seal compensator body (100) facing away from the low-pressure cylinder body (10).

10. The shaft seal compensator according to claim 1, characterized in that, The shaft seal compensator body (100) includes a shaft seal ring, a clamp (110) and two swivel rings (120). The shaft seal ring is sleeved on the output shaft (20), the clamp (110) is sleeved on the shaft seal ring and can lock the shaft seal ring to the outer wall of the output shaft (20). Both of the two swivel rings (120) are sleeved on the output shaft (20) and are respectively located at both ends of the shaft seal ring.

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