CN210715920U - Sealing rubber ring for hydraulic pressing of pipe fittings - Google Patents

Sealing rubber ring for hydraulic pressing of pipe fittings Download PDF

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Publication number
CN210715920U
CN210715920U CN201921765958.4U CN201921765958U CN210715920U CN 210715920 U CN210715920 U CN 210715920U CN 201921765958 U CN201921765958 U CN 201921765958U CN 210715920 U CN210715920 U CN 210715920U
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CN
China
Prior art keywords
rubber ring
ring
sealing
support ring
sealing rubber
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Active
Application number
CN201921765958.4U
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Chinese (zh)
Inventor
刘善江
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Wuhu Xinxing New Material Industrial Park Co ltd
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Wuhu Xinxing New Material Industrial Park Co ltd
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Priority to CN201921765958.4U priority Critical patent/CN210715920U/en
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Publication of CN210715920U publication Critical patent/CN210715920U/en
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Abstract

The utility model discloses a pipe fitting water pressure is suppressed and is used sealing rubber ring, including support ring and rubber ring body, the inboard of the rubber ring body that shows is equipped with the annular groove, the support ring is established in the annular groove, the support ring is hollow structure, the inboard of support ring is equipped with the through-hole that is used for supporting interior hollow structure of ring and pipe fitting inner chamber to be linked together. The sealing rubber ring for hydraulic pressure of the pipe fitting is reasonable in structural design, when the pipe fitting is pressed, the pressure of water in the inner cavity is led into the rubber plate interlayer through the flow guide holes in the support ring, the rubber plate is pushed against a workpiece and the plug to generate pressing force, the pressing force can be increased in equal proportion along with the increase of the internal pressure, and therefore effective high-pressure sealing is achieved, the sealing rubber ring is suitable for hydraulic pressure pressing and sealing of large-size pipe fittings, and sealing is reliable.

Description

Sealing rubber ring for hydraulic pressing of pipe fittings
Technical Field
The utility model belongs to the technical field of the pipe fitting water pressure detection technique and specifically relates to a pipe fitting water pressure is suppressed and is used sealing rubber ring is related to.
Background
As shown in fig. 3, when the water pressure of the nodular cast iron pipe fitting is detected, an annular rubber plate is usually arranged on the end face of the joint of the pipe fitting, pressure is applied between a workpiece and the rubber plate, and the end face of the workpiece and the plug are sealed through elastic deformation of the rubber plate, so that the inner cavity of the pipe fitting product is filled with water and pressurized.
When the required water pressure detection pressure of large-specification products and medium-specification products is higher (more than 2.5MPa), the method has poor sealing, so that the pressing cannot be carried out; specifically, the method shown in fig. 3 relies on mechanical pressure to compress the rubber plate to establish sealing, and when the pipe fitting interface is large, such as above DN1200mm, the casting surface of the product interface is uneven, so that the force for pressing the rubber plate at each position on the circumference is different, thereby affecting the lifting of the sealing pressure and failing to realize a high-pressure hydraulic experiment.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to solve the technical problem that a pipe fitting water pressure is suppressed and is used sealing rubber ring is provided, it is suitable for big specification pipe fitting water pressure to suppress sealedly, and is sealed reliable.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the sealing rubber ring for hydraulic pressing of the pipe fitting comprises a support ring and a rubber ring body, wherein an annular groove is formed in the inner side of the rubber ring body, the support ring is arranged in the annular groove and is of a hollow structure, and a through hole for communicating the hollow structure in the support ring with an inner cavity of the pipe fitting is formed in the inner side of the support ring.
Furthermore, the support ring is arranged at the upper middle position and the lower middle position of the rubber ring body to form a sandwich structure.
The outer edge of the supporting ring is arranged in the annular groove of the rubber ring body.
The Shore hardness of the rubber ring body is 60-70 degrees.
The support ring is a hollow annular steel plate.
And a water tank is arranged at the joint of the support ring and the rubber ring body on the support ring, and the hollow structure in the support ring is communicated with the water tank.
The water tank is a group of annular water tanks arranged side by side.
The supporting ring is provided with radial flow guide holes along the radial direction, and axial flow guide holes for communicating the radial flow guide holes with the water tank are formed in the supporting ring.
The water tank is an arc-shaped water tank.
The support ring comprises an upper annular plate and a lower annular plate, a radial flow guide hole is formed between the upper annular plate and the lower annular plate in a sealing mode at the outer edge, and the inner edge of the lower annular plate extends inwards relative to the inner edge of the upper annular plate.
Compared with the prior art, the utility model, have following advantage:
the sealing rubber ring for hydraulic pressure of the pipe fitting is reasonable in structural design, when the pipe fitting is pressed, the pressure of water in the inner cavity is led into the rubber plate interlayer through the flow guide holes in the support ring, the rubber plate is pushed against a workpiece and the plug to generate pressing force, the pressing force can be increased in equal proportion along with the increase of the internal pressure, and therefore effective high-pressure sealing is achieved, the sealing rubber ring is suitable for hydraulic pressure pressing and sealing of large-size pipe fittings, and sealing is reliable.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
fig. 1 is an application schematic diagram of the sealing rubber ring of the present invention.
Fig. 2 is a schematic view of the sealing rubber ring according to the present invention.
Fig. 3 is a schematic diagram of a prior art sealing rubber ring application.
In the figure:
1. the device comprises a pipe fitting to be pressed, a plug 2, a support ring 3, a rubber ring body 4, radial guide holes 5, axial guide holes 6 and an annular water tank 7.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the sealing rubber ring for hydraulic pipe pressing comprises a support ring 3 and a rubber ring body 4, wherein an annular groove is formed in the inner side of the rubber ring body 4, the support ring is arranged in the annular groove, the support ring 3 is of a hollow structure, and a through hole for communicating the hollow structure in the support ring with the inner cavity of the pipe 1 to be pressed is formed in the inner side of the support ring 3.
The support ring 3 is arranged at the upper middle position and the lower middle position of the rubber ring body to form a sandwich structure. The outer edge of the support ring is arranged in the annular groove of the rubber ring body, and the outer side of the support ring is wrapped by the rubber ring body.
The support ring 3 is a hollow annular steel plate. Preferably, the support ring comprises an upper annular plate and a lower annular plate, a radial diversion hole is formed between the upper annular plate and the lower annular plate in a sealed mode at the outer edge, and the inner edge of the lower annular plate extends inwards relative to the inner edge of the upper annular plate and is stably positioned.
The supporting ring is provided with a water tank at the joint of the supporting ring and the rubber ring body, and the hollow structure in the supporting ring is communicated with the water tank. Furthermore, the water tank is a group of annular water tanks 7 which are arranged side by side, and the water tank is an arc-shaped water tank.
The support ring 3 is provided with radial diversion holes 5 along the radial direction, and axial diversion holes 6 for communicating the radial diversion holes and the water tank are arranged in the support ring.
When the pressure is pressed, the pressure of water in the inner cavity is led into the rubber plate interlayer through the flow guide holes in the support ring, the rubber plate is pushed against a workpiece and the plug to generate pressing force, and the pressing force can be increased in equal proportion along with the increase of the internal pressure, so that effective high-pressure sealing is realized, and the high-pressure sealing device is suitable for hydraulic pressing sealing of large-size pipe fittings and is reliable in sealing.
Preferred specific examples are:
the hollow rubber plate with the interlayer is manufactured by improving the structure of the originally used solid rubber plate, a steel plate support ring is arranged in the hollow rubber plate, and a flow guide hole is formed in the hollow rubber plate and communicated with water energy when the hollow rubber plate is pressed by an inner cavity of a pipe fitting. Establish the step on original pressure with sealed end cap 2 board for the sealed rubber ring of installation location, and wrap up rubber ring body excircle, prevent that the rubber ring from outwards expanding when stressed.
The rubber ring body is a sandwich type rubber ring body, is of an annular structure, has a hollow inner layer, and is made of rubber with Shore hardness of 60-70 degrees; the support ring is used for supporting an interlayer of the annular rubber ring, keeps a certain thickness, keeps the rubber ring round and matched with the shape of a workpiece, is internally provided with radial flow guide holes which are radial, are uniformly distributed on the circumference and are communicated with the annular water tank through axial flow guide holes.
The sealing of the pipe fitting under low pressure and water filling (below 0.3 MPa) can be realized by the elastic deformation of the rubber plate when the pipe fitting is pressed, when the high-pressure pump is used for pressing, the pressure of the water in the inner cavity is led into the interlayer of the rubber ring body through the flow guide holes in the annular rubber ring support ring, the upper rubber plate and the lower rubber plate of the rubber ring body are pushed against a workpiece and the plug head to generate pressing force according to the principle of normal pressure, and the pressing force can be increased in equal proportion along with the increase of the internal pressure, so that the effective high-pressure sealing is realized.
The above-mentioned is only for the description of the preferred embodiments of the present invention, and the above-mentioned technical features can be combined at will to form a plurality of embodiments of the present invention.
The present invention has been described in detail with reference to the accompanying drawings, and it is apparent that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.

Claims (10)

1. The utility model provides a pipe fitting water pressure is suppressed and is used sealing rubber ring which characterized in that: the pipe fitting comprises a support ring and a rubber ring body, wherein an annular groove is formed in the inner side of the rubber ring body, the support ring is arranged in the annular groove and is of a hollow structure, and a through hole used for supporting the hollow structure in the ring to be communicated with the inner cavity of the pipe fitting is formed in the inner side of the support ring.
2. The sealing rubber ring for hydraulic pipe pressing according to claim 1, wherein: the supporting ring is arranged at the upper middle position and the lower middle position of the rubber ring body to form a sandwich structure.
3. The sealing rubber ring for hydraulic pipe pressing according to claim 1, wherein: the outer edge of the supporting ring is arranged in the annular groove of the rubber ring body.
4. The sealing rubber ring for hydraulic pipe pressing according to claim 1, wherein: the Shore hardness of the rubber ring body is 60-70 degrees.
5. The sealing rubber ring for hydraulic pipe pressing according to claim 1, wherein: the support ring is a hollow annular steel plate.
6. The seal rubber ring for hydraulic pipe pressing according to claim 1 or 3, wherein: and a water tank is arranged at the joint of the support ring and the rubber ring body on the support ring, and the hollow structure in the support ring is communicated with the water tank.
7. The sealing rubber ring for hydraulic pipe pressing according to claim 6, wherein: the water tank is a group of annular water tanks arranged side by side.
8. The sealing rubber ring for hydraulic pipe pressing according to claim 6, wherein: the supporting ring is provided with radial flow guide holes along the radial direction, and axial flow guide holes for communicating the radial flow guide holes with the water tank are formed in the supporting ring.
9. The sealing rubber ring for hydraulic pipe pressing according to claim 6, wherein: the water tank is an arc-shaped water tank.
10. The seal rubber ring for hydraulic pipe pressing according to claim 8, wherein: the support ring comprises an upper annular plate and a lower annular plate, a radial flow guide hole is formed between the upper annular plate and the lower annular plate in a sealing mode at the outer edge, and the inner edge of the lower annular plate extends inwards relative to the inner edge of the upper annular plate.
CN201921765958.4U 2019-10-21 2019-10-21 Sealing rubber ring for hydraulic pressing of pipe fittings Active CN210715920U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921765958.4U CN210715920U (en) 2019-10-21 2019-10-21 Sealing rubber ring for hydraulic pressing of pipe fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921765958.4U CN210715920U (en) 2019-10-21 2019-10-21 Sealing rubber ring for hydraulic pressing of pipe fittings

Publications (1)

Publication Number Publication Date
CN210715920U true CN210715920U (en) 2020-06-09

Family

ID=70932288

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921765958.4U Active CN210715920U (en) 2019-10-21 2019-10-21 Sealing rubber ring for hydraulic pressing of pipe fittings

Country Status (1)

Country Link
CN (1) CN210715920U (en)

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