CN210715379U - Integral type conical surface sealing pressure measuring joint - Google Patents
Integral type conical surface sealing pressure measuring joint Download PDFInfo
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- CN210715379U CN210715379U CN201921429298.2U CN201921429298U CN210715379U CN 210715379 U CN210715379 U CN 210715379U CN 201921429298 U CN201921429298 U CN 201921429298U CN 210715379 U CN210715379 U CN 210715379U
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Abstract
The utility model relates to an integral type conical surface sealing pressure measuring joint, which comprises a joint body; the center of the joint body is a step hole which is communicated up and down, and the upper end of the joint body and the lower end of the joint body are both provided with external threads; an O-shaped ring, a PTFE check ring and a metal check ring are arranged at the bottom of a step hole at the upper end of the joint body; the edge of the bottom of a step hole at the lower end of the joint body is a conical surface, a valve core body is placed in the step hole, a conical cylinder is arranged at the upper end of the valve core body, the conical surface of the conical cylinder is abutted against the conical surface, a cylinder is arranged at the lower end of the valve core body and is inserted into a central hole of the valve core seat, the spring is sleeved on the outer cylindrical surface at the lower end of the valve core seat, and the top of the spring is abutted against the lower part of a step shaft arranged on the outer cylindrical; the top of the fixed long check ring is pressed below the spring, the center of the fixed long check ring is a through hole, the fixed long check ring is fixed in a step hole at the lower end of the connector body, the fixed long check ring compresses the spring, the conical surface of the valve core body is pressed on the conical surface by the spring, and the conical surface form conical surface sealing fit.
Description
Technical Field
The utility model relates to a hydraulic pressure spare part, especially possess an integral conical surface sealing pressure measurement joint of gas-liquid commonality ability.
Background
At present, the internal structure of a pressure measuring joint comprises three types, namely a ball seal type pressure measuring joint, a piston column seal type pressure measuring joint and a conical surface seal type pressure measuring joint, wherein the ball seal type pressure measuring joint realizes sealing through hard contact of a steel ball and a one-way valve body, the sealing mode can realize working under the rated pressure of 63Mpa, but the requirement on the machining precision of the valve body spherical surface matched with the steel ball is very high, under the severe market competition environment, a manufacturer strictly controls the machining cost, so that the reliability is poor, the sealing performance of the ball seal to gas is poor, and the defective rate is high; the piston column sealing pressure measuring joint realizes sealing through the soft contact of the O-shaped ring on the piston column and the one-way valve body, the sealing mode has high sealing reliability on gas and liquid, low defective rate, insensitive reaction and higher manufacturing cost, moreover, the O-shaped ring can not bear the rated pressure of 63Mpa, generally can only work under the pressure of 30Mpa, meanwhile, the synthetic rubber used by the O-shaped ring can be aged more quickly under the dual actions of temperature and high pressure, and leakage caused by sealing failure is easy to cause; the structure of the cone sealing pressure measuring joint is reliable and has been widely accepted and applied in the industry, however, only one type of combined pressure measuring connector is available at present, the combined pressure measuring connector is complex and uses a common spiral spring, the common spiral spring is used by all similar products in the industry at present, the spiral spring is easy to bend, the stability of the force value is not ideal, and the common problem which puzzles the industry all the time is solved. The small O-shaped ring sealing part at the top of the combined pressure measuring joint is easy to generate fatigue aging of the O-shaped ring under the state that the valve core is opened for a long time, so that the problem of oil leakage is caused, the combined pressure measuring joint works under the pressure of 63Mpa particularly, the sealing failure is easier to cause leakage, and the stability is lacked.
Disclosure of Invention
The utility model aims to solve the technical problem that an integral conical surface sealing pressure measurement connects is provided, its technical problem that adopts special structural design to solve the traditional structure that the conical surface sealing pressure measurement connects and lacks stability.
In order to solve the technical problem, the utility model discloses a realize through following mode: the utility model discloses an integral type conical surface sealing pressure measuring joint, which comprises a joint body; the center of the joint body is a step hole which is communicated up and down, and the upper end of the joint body and the lower end of the joint body are both provided with external threads; an O-shaped ring is placed at the bottom of a step hole in the upper end of the connector body, a PTFE check ring pressed with the O-shaped ring is placed above the O-shaped ring, a metal check ring pressed with the PTFE check ring is arranged on the PTFE check ring, and the PTFE check ring and the metal check ring are fixed in the step hole in the upper end of the connector body; the edge of the bottom of a step hole at the lower end of the joint body is a conical surface, a valve core body is arranged in the step hole, a conical cylinder is arranged at the upper end of the valve core body, the conical surface of the conical cylinder is abutted against the conical surface, a cylinder is arranged at the lower end of the valve core body and is inserted into a central hole of the valve core seat, the spring is sleeved on the outer cylindrical surface at the lower end of the valve core seat, and the top of the spring is abutted against the lower part of a step shaft arranged on the outer cylindrical surface; the top of the fixed long check ring is pressed below the spring, the center of the fixed long check ring is a through hole, the fixed long check ring is fixed in a step hole at the lower end of the connector body, the fixed long check ring compresses the spring, the spring presses the conical surface of the valve core body on the conical surface, and the conical surface form conical surface sealing fit; and a valve core ring is arranged between the top of the valve core seat and the bottom of the conical cylinder.
The spring is a wave-shaped compression spring.
The hole opening edge of the stepped hole at the upper end of the connector body is flanged towards the inner side of the stepped hole to form a hole with the diameter smaller than that of the stepped hole at the upper end of the connector body, and a small hole formed by the flanging can axially limit the metal check ring, the PTFE check ring and the O-shaped ring.
The hole opening edge of the stepped hole at the lower end of the connector body is flanged towards the inner side of the stepped hole to form a hole with the diameter smaller than that of the stepped hole at the lower end of the connector body, and a small hole formed by the flanging can axially limit the fixed long retainer ring.
The stepped hole at the upper end of the joint body is communicated with the stepped hole at the lower end of the joint body through a through hole with the diameter smaller than the diameter of the stepped hole at the upper end of the joint body and the diameter of the stepped hole at the lower end of the joint body.
The upper end of the connector body is connected with a measuring hose or a measuring connector with a thimble through external threads, the thimble of the measuring hose or the measuring connector presses the valve core body downwards, the conical surface is separated from the conical surface, and a channel in the center of the connector body is opened.
The external screw thread bottom of the joint body lower extreme is provided with the ED circle, and the joint body links to each other with the oil port department internal thread of measurand pipeline through the external screw thread of lower extreme, and the excircle step axle of joint body pushes down the ED circle, forms sealedly in oil port department through the ED circle.
The orifices of the stepped hole described in the technical scheme are all the inlet ends for placing the check ring, the O-shaped ring, the steel ball, the spring and the spring plunger into the stepped hole, and the bottom of the stepped hole is the hole bottom step position where the stepped hole plays an axial limiting role for the O-shaped ring and the steel ball.
The utility model discloses an actively the effect: an integral conical surface sealing pressure measurement connects, its advantage lies in:
1. utilize the sealed conical surface metal contact plastic deformation under the pressure effect, reach certain sealed face width and sealed specific pressure, use with the case circle cooperation simultaneously, realize the effective seal of pressure measurement joint under the dual function, the case circle adopts anti-aging high pressure resistant polymer material, can normally work under 63 Mpa's pressure. The pressure of a system is small in the working initial stage of the joint body, the contact area of the conical sealing pair is small, but the existence of the sealing valve core ring can meet the normal sealing requirement, along with the increase of the pressure of the system, the axial pre-tightening force on the valve core seat is continuously increased, the valve core seat pushes the valve core body to move axially, the contact area of the conical sealing pair is continuously increased, the plastic deformation of a contact part achieves certain sealing surface width and sealing specific pressure, the good sealing performance of the pressure measuring joint under high pressure (63 Mpa) is realized, the good sealing performance of the pressure measuring joint on gas and high-pressure liquid is finally realized, and the stability of the pressure measuring joint is improved.
2. By adopting the waveform compression spring, the problem of bending deformation of the common spiral spring in a working state is effectively solved, the service life of the spring is greatly prolonged, the force value of the spring is more stable and reliable, the probability of leakage caused by bending and fatigue of the common spring and instability of the force value of the pressure measuring joint is greatly reduced, and the stability of the pressure measuring joint is improved.
3. In the reality application, especially large-scale complicated hydraulic system adopts the hose nipple assembly to draw out the hydraulic system fluid usually, concentrates on the valve block of a many interfaces, and the installation manometer concentrates the control pressure state, and this kind of application needs pressure measurement joint valve core body to be in the state of opening always, and the built-in O type circle position in pressure measurement joint top bears fluid pressure impact for a long time, thereby leads to the tired easy production leakage risk of O type circle, and the utility model discloses well pressure measurement joint's structure is the structure that increases the PTFE retaining ring of tip position before top O type circle, and double seal function, the effectual life who improves O type circle seal position bearing capacity and improve O type circle under the valve core body state of opening, can normally work under 63 Mpa's pressure, has improved pressure measurement joint stability. The PTFE material has cold flow property, the hardness is between common plastic box rubbers, a small fit clearance (the clearance is almost close to 0) can be used, and the supporting force of the PTFE material on the O-shaped ring is obviously increased. In addition, the pressure can also make the PTFE material produce micro-deformation, play the radial seal effect, in the thimble plug in-out process, because of the PTFE material itself has plastic deformation ability, and good lubricating property and the dead phenomenon of card can not appear.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure, the valve core comprises a metal retainer ring 1, a metal retainer ring 2, a PTFE retainer ring 3, an O-shaped ring 4, a connector body 5, a valve core body 6, a valve core ring 7, a valve core seat 8, a wave-shaped compression spring 9, an ED ring 10 and a fixed long retainer ring.
Detailed Description
As shown in fig. 1, as a specific embodiment, the present invention provides an integrated cone seal pressure measuring connector, which includes a connector body 4; the center of the joint body 4 is a step hole which is communicated up and down, and the upper end of the joint body 4 and the lower end of the joint body 4 are both provided with external threads; an O-shaped ring 3 is placed at the bottom of a step hole in the upper end of the connector body 4, a PTFE check ring 2 which is tightly pressed with the O-shaped ring 3 is placed above the O-shaped ring 3, a metal check ring 1 which is tightly pressed with the PTFE check ring 2 is arranged on the PTFE check ring 2, and the PTFE check ring 2 and the metal check ring 1 are fixed in the step hole in the upper end of the connector body 4; the edge of the bottom of a step hole at the lower end of the joint body 4 is a conical surface, a valve core body 5 is placed in the step hole, a conical cylinder is arranged at the upper end of the valve core body 5, the conical surface of the conical cylinder is abutted against the conical surface, a cylinder is arranged at the lower end of the valve core body 5 and is inserted into a central hole of the valve core seat 7, the wave-shaped compression spring 8 is sleeved on the outer cylindrical surface at the lower end of the valve core seat 7, and the top of the wave-shaped compression spring is abutted against the lower part of a step shaft arranged on; the top of the fixed long check ring 10 is pressed below the wave-shaped compression spring 8, the center is a through hole, the fixed long check ring 10 is fixed in a step hole at the lower end of the connector body, the fixed long check ring 10 compresses the wave-shaped compression spring 8, the wave-shaped compression spring 8 presses the conical surface of the valve core body 5 on the conical surface, and the conical surface form conical surface sealing fit; and a valve core ring 6 is arranged between the top of the valve core seat 7 and the bottom of the conical cylinder.
The hole opening edge of the stepped hole at the upper end of the connector body 4 is flanged towards the inner side of the stepped hole to form a hole with the diameter smaller than that of the stepped hole at the upper end of the connector body 4, and a small hole formed by the flanging can axially limit the metal retainer ring 1, the PTFE retainer ring 2 and the O-shaped ring 3.
The hole opening edge of the stepped hole at the lower end of the joint body 4 is flanged towards the inner side of the stepped hole to form a hole with the diameter smaller than that of the stepped hole at the lower end of the joint body, and a small hole formed by the flanging can axially limit the fixed long retainer ring 10.
The step hole at the upper end of the joint body 4 is communicated with the step hole at the lower end of the joint body 4 through a through hole with the diameter smaller than the diameter of the step hole at the upper end of the joint body 4 and the diameter of the step hole at the lower end of the joint body 4.
The upper end of the joint body 4 is connected with a measuring hose or a measuring joint with a thimble through external threads, the thimble of the measuring hose or the measuring joint presses the valve core body 5 downwards, the conical surface is separated from the conical surface, and a channel in the center of the joint body 4 is opened.
The external screw thread bottom of the joint body 4 lower extreme is provided with ED circle 9, and the joint body 4 passes through the external screw thread of lower extreme and links to each other with the oil port department internal thread of measurand pipeline, and the excircle step axle of joint body 4 pushes down ED circle 9, forms sealedly in oil port department through ED circle 9.
The utility model discloses a working process is:
an integral conical surface seals pressure measurement connects, at first links to each other with the oil port department internal thread of measurand pipeline through the external screw thread that connects the body through the lower extreme, and the external screw thread bottom is provided with the ED circle and forms sealedly in oil port department. Then the upper end of the joint body is connected with a measuring hose or a measuring joint with a thimble through an external thread, the thimble of the measuring hose or the measuring joint presses the valve core body downwards, the conical surface is separated from the conical surface, a channel at the center of the joint body is opened, and the pressure of a pipeline system starts to be measured.
The above is only for illustrating some functional structure principles of the integral type conical surface sealing pressure measuring joint related to the present invention, since it is easy for the technicians in the same technical field to perform a plurality of modifications on this basis, therefore, this specification will not limit the present invention to an integral type conical surface sealing pressure measuring joint in the specific mechanism and application range shown or stated, so all the corresponding modifications and equivalents that may be utilized belong to the protection scope of the present invention.
Claims (7)
1. The utility model provides an integral conical surface seals pressure measurement connects, includes the joint body, its characterized in that: the center of the joint body is a step hole which is communicated up and down, and the upper end of the joint body and the lower end of the joint body are both provided with external threads; an O-shaped ring is placed at the bottom of a step hole in the upper end of the connector body, a PTFE check ring pressed with the O-shaped ring is placed above the O-shaped ring, a metal check ring pressed with the PTFE check ring is arranged on the PTFE check ring, and the PTFE check ring and the metal check ring are fixed in the step hole in the upper end of the connector body; the edge of the bottom of a step hole at the lower end of the joint body is a conical surface, a valve core body is arranged in the step hole, a conical cylinder is arranged at the upper end of the valve core body, the conical surface of the conical cylinder is abutted against the conical surface, a cylinder is arranged at the lower end of the valve core body and is inserted into a central hole of the valve core seat, the spring is sleeved on the outer cylindrical surface at the lower end of the valve core seat, and the top of the spring is abutted against the lower part of a step shaft arranged on the outer cylindrical surface; the top of the fixed long check ring is pressed below the spring, the center of the fixed long check ring is a through hole, the fixed long check ring is fixed in a step hole at the lower end of the connector body, the fixed long check ring compresses the spring, the spring presses the conical surface of the valve core body on the conical surface, and the conical surface form conical surface sealing fit; and a valve core ring is arranged between the top of the valve core seat and the bottom of the conical cylinder.
2. The integrated cone seal pressure tap of claim 1 wherein: the spring is a wave-shaped compression spring.
3. The integrated cone seal pressure tap of claim 1 wherein: the hole opening edge of the stepped hole at the upper end of the connector body is flanged towards the inner side of the stepped hole to form a hole with the diameter smaller than that of the stepped hole at the upper end of the connector body, and a small hole formed by the flanging can axially limit the metal check ring, the PTFE check ring and the O-shaped ring.
4. The integrated cone seal pressure tap of claim 1 wherein: the hole opening edge of the stepped hole at the lower end of the connector body is flanged towards the inner side of the stepped hole to form a hole with the diameter smaller than that of the stepped hole at the lower end of the connector body, and a small hole formed by the flanging can axially limit the fixed long retainer ring.
5. The integrated bevel seal pressure tap according to any one of claims 1 to 4, wherein: the stepped hole at the upper end of the joint body is communicated with the stepped hole at the lower end of the joint body through a through hole with the diameter smaller than the diameter of the stepped hole at the upper end of the joint body and the diameter of the stepped hole at the lower end of the joint body.
6. The integrated bevel seal pressure tap according to any one of claims 1 to 4, wherein: the upper end of the connector body is connected with a measuring hose or a measuring connector with a thimble through external threads, the thimble of the measuring hose or the measuring connector presses the valve core body downwards, the conical surface is separated from the conical surface, and a channel in the center of the connector body is opened.
7. The integrated bevel seal pressure tap according to any one of claims 1 to 4, wherein: the external screw thread bottom of the joint body lower extreme is provided with the ED circle, and the joint body links to each other with the oil port department internal thread of measurand pipeline through the external screw thread of lower extreme, and the excircle step axle of joint body pushes down the ED circle, forms sealedly in oil port department through the ED circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429298.2U CN210715379U (en) | 2019-08-30 | 2019-08-30 | Integral type conical surface sealing pressure measuring joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429298.2U CN210715379U (en) | 2019-08-30 | 2019-08-30 | Integral type conical surface sealing pressure measuring joint |
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| Publication Number | Publication Date |
|---|---|
| CN210715379U true CN210715379U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921429298.2U Active CN210715379U (en) | 2019-08-30 | 2019-08-30 | Integral type conical surface sealing pressure measuring joint |
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| CN (1) | CN210715379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065908A (en) * | 2020-08-24 | 2020-12-11 | 株洲时代瑞唯减振装备有限公司 | Self-locking anti-loosening sealing method of sealing bolt and self-locking anti-loosening sealing bolt |
-
2019
- 2019-08-30 CN CN201921429298.2U patent/CN210715379U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065908A (en) * | 2020-08-24 | 2020-12-11 | 株洲时代瑞唯减振装备有限公司 | Self-locking anti-loosening sealing method of sealing bolt and self-locking anti-loosening sealing bolt |
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