Secondary sealing maintenance-free anti-pull-off sleeve compensator

Abstract

The utility model discloses a secondary sealing maintenance-free anti-pull-off sleeve compensator, and belongs to the technical field of compensators. The secondary sealing maintenance-free anti-pull-off sleeve compensator comprises an outer sleeve, a sleeve connecting rod is installed at one end of the outer sleeve, a buffer spring is installed at one end of the sleeve connecting rod, an inner sleeve is installed at the upper end of the buffer spring, and a sleeve ring is installed at one end of the inner sleeve. Through the arrangement of the outer sleeve, the buffer spring, the inner sleeve, the first bolt, the second bolt and the waterproof layer, the first bolt and the second bolt are screwed on the sleeve connecting rod penetrating through the outer sleeve, and the impact force at the working contact position of the inner sleeve and the outer sleeve in the compensation process is buffered through the acting force of the buffer spring; and meanwhile, the waterproof layers are arranged on the outer end surfaces of the inner sleeve and the outer sleeve, so that a medium in the pipeline can be protected from being influenced by external moisture, the pipeline can be prevented from being damaged due to water erosion, leakage of middle filler is prevented, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of compensator technology, specifically a secondary sealing, maintenance-free, pull-out-proof sleeve compensator. Background Technology

[0002] In piping systems, pipes expand and contract due to temperature changes. For example, in heating pipelines, hot water causes the pipe temperature to rise during transportation, leading to expansion, and then contraction during cooling. Without a compensator to absorb these dimensional changes, the pipeline may be damaged by excessive stress, such as bending or cracking. The compensator effectively absorbs the thermal expansion and contraction of the pipeline through its elastic deformation, ensuring the safe operation of the pipeline system. Existing equipment cannot effectively prevent leakage of intermediate packing, thus affecting the equipment's service life. Sleeve compensators are widely used in heating network pipelines as compensation devices. Heating is a vital public service, making the quality and performance of related products particularly important. Currently, sleeve compensators on the market suffer from problems such as packing wear and leakage during use, short service life, and difficult maintenance. Therefore, a secondary-sealed, maintenance-free, pull-out-proof sleeve compensator is needed.

[0003] Existing anti-pull-out sleeve compensators cannot achieve maintenance-free anti-pull-out effect during operation, cannot effectively prevent leakage of intermediate packing and thus extend the service life of the device, and cannot effectively improve the waterproof sealing effect of the device. Therefore, there is an urgent need for a secondary sealing maintenance-free anti-pull-out sleeve compensator. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a secondary sealing, maintenance-free, pull-out-proof sleeve compensator to solve the problem that existing metal bellows waterproof sleeve compensators cannot effectively prevent leakage of intermediate filler during use, thus failing to extend the service life of the device, and at the same time, cannot effectively improve the waterproof sealing effect of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a secondary sealing, maintenance-free, pull-out-proof sleeve compensator, comprising an outer sleeve, a connecting rod installed at one end of the outer sleeve, a buffer spring installed at one end of the connecting rod, an inner sleeve installed at the upper end of the buffer spring, a sleeve ring installed at one end of the inner sleeve, a first bolt installed at one end of the connecting rod, and a second bolt installed at one end of the connecting rod.

[0006] A waterproof layer is installed at the outer end of the outer sleeve, and a sealing ring is installed at the inner end of the outer sleeve.

[0007] Preferably, the connecting rod is movably connected to the outer sleeve, and the connecting rod is arranged in a "ring" shape around the central axis of the outer sleeve.

[0008] Preferably, the inner sleeve and the outer sleeve are engaged, and the inner sleeve and the outer sleeve form a telescopic structure through a buffer spring.

[0009] Preferably, the sleeve ring is engaged with the connecting rod, and the first bolt is threadedly connected to the connecting rod.

[0010] Preferably, the inner end surface of the waterproof layer is in close contact with the outer end surface of the outer sleeve, and the inner end surface of the waterproof layer is in close contact with the outer end surface of the inner sleeve.

[0011] Preferably, the sealing ring is engaged with the outer sleeve, and the sealing rings are evenly distributed on the inner end surface of the outer sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the use of a cylindrical helical compression spring and a balance ring, not only makes the product aesthetically pleasing but also highly practical. It effectively addresses the leakage problem caused by reduced packing gland clamping force due to long-term expansion and contraction wear of the core tube, eliminating the need for maintenance. Specifically, the shape and structure of this design make the product more stable and reliable during use, thus extending its service life.

[0014] 2. This utility model, through the setting of an outer sleeve, a buffer spring, an inner sleeve, a first bolt, a second bolt, and a waterproof layer, tightens the first bolt and the second bolt onto the connecting rod inserted on the outer sleeve. The impact force at the working contact point of the inner sleeve and the outer sleeve during the compensation process is buffered by the action of the buffer spring. At the same time, a waterproof layer is provided on the outer end surface of the inner sleeve and the outer sleeve, which can not only protect the medium inside the pipeline from the influence of external moisture, but also prevent the pipeline from being damaged by water erosion, prevent leakage of intermediate packing, and extend the service life of the device.

[0015] 3. This utility model enhances the waterproof sealing effect of the device during compensating for movement by setting an outer sleeve, an inner sleeve, and sealing rings, and by setting multiple sealing rings at the contact position of the inner sleeve and the outer sleeve tube wall. Attached Figure Description

[0016] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This utility model Figure 3Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Outer sleeve; 2. Connecting rod; 3. Buffer spring; 4. Inner sleeve; 5. Sleeve ring; 6. First bolt; 7. Second bolt; 8. Waterproof layer; 9. Sealing ring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] The embodiments of this utility model will be described below based on its overall structure.

[0023] Please see Figure 1-4 The secondary sealing, maintenance-free, pull-out-proof sleeve compensator includes an outer sleeve 1, a connecting rod 2 installed at one end of the outer sleeve 1, a buffer spring 3 installed at one end of the connecting rod 2, an inner sleeve 4 installed at the upper end of the buffer spring 3, a sleeve ring 5 installed at one end of the inner sleeve 4, a first bolt 6 installed at one end of the connecting rod 2, and a second bolt 7 installed at the other end of the connecting rod 2. The connecting rod 2 is movably connected to the outer sleeve 1, and the connecting rod 2 is arranged in a "ring" shape around the central axis of the outer sleeve 1. The inner sleeve 4 is engaged with the outer sleeve 1, and the inner sleeve 4 forms a telescopic structure with the outer sleeve 1 through the buffer spring 3. The sleeve ring 5 is engaged with the connecting rod 2, and the first bolt 6 is threaded to the connecting rod 2. The first bolt 6 and the second bolt 7 are tightened onto the connecting rod 2 that passes through the outer sleeve 1. The force of the buffer spring 3 buffers the impact force at the working contact point of the inner sleeve 4 and the outer sleeve 1 during the compensation process, preventing leakage of the intermediate packing and extending the service life of the device.

[0024] Please see Figure 1-4 The secondary sealing, maintenance-free, pull-out-proof sleeve compensator has a waterproof layer 8 installed on the outer end of the outer sleeve 1 and a sealing ring 9 installed on the inner end of the outer sleeve 1. The inner surface of the waterproof layer 8 is tightly fitted with the outer surface of the outer sleeve 1, and the inner surface of the waterproof layer 8 is tightly fitted with the outer surface of the inner sleeve 4. The sealing ring 9 is engaged with the outer sleeve 1, and the sealing rings 9 are evenly distributed on the inner surface of the outer sleeve 1. The waterproof layer 8 on the outer surface of the inner sleeve 4 and the outer sleeve 1 not only protects the medium inside the pipeline from the influence of external moisture, but also prevents the pipeline from being damaged by water erosion. Furthermore, the multiple sealing rings 9 set at the contact position between the inner sleeve 4 and the pipe wall of the outer sleeve 1 enhance the waterproof sealing effect inside the device during compensating movement.

[0025] Working principle: During use, the first bolt 6 and the second bolt 7 are tightened onto the connecting rod 2 inserted into the outer sleeve 1. When the entire device is working, the contents expand, causing the inner sleeve 4 and the outer sleeve 1 to move in opposite directions. The impact force at the working contact point of the inner sleeve 4 and the outer sleeve 1 during the compensation process is buffered by the action of the buffer spring 3, preventing leakage of the intermediate packing and extending the service life of the device. Furthermore, a waterproof layer 8 is provided on the outer end surface of the inner sleeve 4 and the outer sleeve 1, which not only protects the medium inside the pipe from the influence of external moisture but also prevents the pipe from being damaged by water erosion. Similarly, multiple sealing rings 9 are provided at the contact point between the inner sleeve 4 and the outer sleeve 1, enhancing the internal waterproof sealing effect during the compensation movement of the device. With this design, the product is not only aesthetically pleasing but also highly practical, solving the problem of leakage caused by the reduction of the packing gland clamping force due to long-term expansion and contraction wear of the core tube, requiring no maintenance. Specifically, the shape and structure of this design make the product more stable and reliable during use, and improve its service life. This completes the use of the device. Any content not described in detail in this specification is prior art known to those skilled in the art.

[0026] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Double seal maintenance-free anti-pull-out type sleeve compensator comprising an outer sleeve (1), characterized in that: The outer sleeve (1) is provided with a connecting sleeve rod (2) at one end, the connecting sleeve rod (2) is provided with a buffer spring (3) at one end, the buffer spring (3) is provided with an inner sleeve (4) at the upper end, the inner sleeve (4) is provided with a sleeve ring (5) at one end, the connecting sleeve rod (2) is provided with a first bolt (6) at one end, and the connecting sleeve rod (2) is provided with a second bolt (7) at one end. The outer sleeve (1) is provided with a waterproof layer (8) at the outer end, and the outer sleeve (1) is provided with a sealing ring (9) at the inner end.

2. The secondary seal maintenance-free pull-through sleeve compensator of claim 1, wherein: The connecting sleeve rod (2) is movably connected with the outer sleeve (1), and the connecting sleeve rod (2) is arranged in a "ring" shape along the central axis of the outer sleeve (1).

3. The secondary seal, maintenance free, pull-off resistant, sleeve compensator of claim 1, wherein: The inner sleeve (4) is clampedly connected with the outer sleeve (1), and the inner sleeve (4) and the outer sleeve (1) form a telescopic structure through the buffer spring (3).

4. The secondary seal, maintenance free, pull-off resistant, sleeve compensator of claim 1, wherein: The sleeve ring (5) is clampedly connected with the connecting sleeve rod (2), and the first bolt (6) is threadedly connected with the connecting sleeve rod (2).

5. The secondary seal, maintenance free, pull -off resistant sleeve compensator of claim 1, wherein: The inner end surface of the waterproof layer (8) is tightly attached to the outer end surface of the outer sleeve (1), and the inner end surface of the waterproof layer (8) is tightly attached to the outer end surface of the inner sleeve (4).

6. The secondary seal, maintenance free, pull-off resistant, sleeve compensator of claim 1, wherein: The sealing ring (9) is clampedly connected with the outer sleeve (1), and the sealing ring (9) is arranged at equal intervals on the inner end surface of the outer sleeve (1).

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