CN210423843U - Anti-rotation axial flow check valve - Google Patents
Anti-rotation axial flow check valve Download PDFInfo
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- CN210423843U CN210423843U CN201921261984.3U CN201921261984U CN210423843U CN 210423843 U CN210423843 U CN 210423843U CN 201921261984 U CN201921261984 U CN 201921261984U CN 210423843 U CN210423843 U CN 210423843U
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Abstract
The utility model discloses an anti-rotation axial flow check valve, which comprises a valve body, a valve seat integrated with the valve body, a support frame arranged at the left side in the valve body, a valve sleeve arranged at the right side in the valve body, a valve clack assembly arranged in the valve body and a spring; the center of the support frame is provided with a through hole; the center of the valve sleeve is provided with a through hole; the tail part of the valve sleeve is fixed on the valve body through a screw; the outer ring of the through hole of the valve sleeve is provided with a spring jack; the valve clack assembly consists of a valve shaft and a valve clack, the center of the valve clack is provided with a mounting hole, the valve shaft sequentially penetrates through a through hole on the supporting frame and the mounting hole on the valve clack and extends into a through hole of the valve sleeve, and the valve shaft and the valve clack are welded together; the outer ring of the mounting hole of the valve clack is provided with a spring jack, and the spring jack is arranged opposite to the spring jack on the valve sleeve; the two ends of the spring are respectively provided with a protruding part, the spring sleeve is arranged on the valve shaft, and the two ends of the spring sleeve are respectively embedded into the spring insertion holes of the valve clack and the valve sleeve. The utility model discloses open and close smoothly, prevent rotation, reliable operation.
Description
Technical Field
The utility model relates to a valve equipment field, in particular to prevent rotating axial flow formula check valve.
Background
The axial flow type check valve has the characteristics of strong flow capacity, small flow resistance, no blockage in opening and closing, reliable sealing and the like. The axial flow check valve determines the opening and closing of the valve flap based on the pressure difference upstream and downstream of the valve. When the upstream pressure is greater than the downstream pressure, the spring force and the friction force, the valve clack opens. When less than the threshold, the valve clack is closed. The opening degree of the valve clack is determined by the pressure difference, the spring force and the friction force and is always in dynamic balance, so that the valve clack works stably, has no noise and reduces the water hammer phenomenon. The axial flow check valve mainly comprises a valve body, a valve seat, a valve sleeve, a valve clack, a valve shaft and a spring, wherein the spring plays an important role, and the design and the selection of the spring are particularly critical.
The valve flap assembly of an axial flow check valve generally employs a single support structure and a double support structure. No matter which kind of supporting structure, all there are the cooperation of valve shaft and bearing, the motion spacing of valve clack and the steady operation structure of valve clack. In the initial stage of design and operation, most of the common axial flow check valves can meet good functional requirements, but the axial flow check valves are different in terms of ensuring long-term reliable operation. Generally, after long-term operation, most axial flow check valves fail due to the failure of the valve flap. If the fluid flow rate pressure fails to open the valve and maintain a stable open position, the flap assembly will continue to flutter, resulting in premature wear, increased noise, or system vibration. In addition, the valve shaft is seriously abraded due to the fact that the valve clack is driven to rotate by the medium rotation tendency in the medium conveying process. The final performance of valve clack failure is sealing failure, and the whole valve sleeve can fall off and flow to downstream to cause accidents when the system vibrates seriously.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an prevent rotating axial flow type check valve that has low flow resistance, energy-conservation and fall make an uproar, open and close advantages such as smooth and easy, prevent rotating, reliable operation.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
prevent rotating axial flow formula check valve, including the valve body and with the integrative disk seat of valve body, prevent rotating axial flow formula check valve still includes:
the support frame is arranged on the left side in the valve body and is longitudinally arranged, and the upper end and the lower end of the support frame are both connected with the valve body; a through hole transversely penetrating through the support frame is formed in the center of the support frame, a bearing is arranged in the through hole, and the bearing and the support frame are fixed through screws;
the valve sleeve is arranged on the right side in the valve body, a through hole transversely penetrating through the valve sleeve is formed in the center of the valve sleeve, a bearing is arranged in the through hole, and the bearing and the valve sleeve are fixed through a screw; the tail part of the valve sleeve is fixed on the valve body through a screw; the outer ring of the through hole of the valve sleeve is provided with a spring jack arranged around the circumferential direction of the through hole;
the valve clack assembly is arranged in the valve body and consists of a valve shaft and a valve clack, the center of the valve clack is provided with a mounting hole transversely penetrating through the valve clack, the valve shaft sequentially penetrates through a through hole in the support frame and the mounting hole in the valve clack and extends into the through hole of the valve sleeve, and the valve shaft and the valve clack are welded together; the outer ring of the mounting hole of the valve clack is provided with a spring jack arranged around the circumferential direction of the mounting hole, and the spring jack is arranged opposite to the spring jack on the valve sleeve;
the spring, the both ends of spring all are equipped with the lug, and the spring housing is established on the valve shaft, and both ends imbed respectively in the circular spring jack of valve clack and valve barrel.
In one embodiment of the present invention, the valve housing is hollow inside, and the outer side of the valve housing is a streamlined elliptic structure and is provided with a pressure balance hole.
The utility model discloses an in the embodiment, the sealed face of valve clack and the sealed face contact of disk seat, the sealed face of valve clack and disk seat is the conical surface, and the surface welding Stellite carbide.
In one embodiment of the present invention, the spring receptacle is the same size as the protrusion.
In one embodiment of the present invention, the valve flap is umbrella-shaped.
Through the technical scheme, the beneficial effects of the utility model are that:
(1) the protruding parts are arranged at the two ends of the spring and are inserted into the circular spring jacks corresponding to the valve clack and the valve sleeve, so that the problem that the valve shaft is seriously abraded due to the fact that the valve clack is driven to rotate by the medium rotating tendency in work is solved.
(2) The utility model discloses in, the valve shaft with valve clack welded fastening solves the problem that probably drops between valve shaft and the valve clack in the medium transportation process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a sectional view of the present invention;
1. the valve body 1a comprises a support frame 11, a bearing 12, a screw 2, a valve seat 3, a valve sleeve 31, a bearing 32, a screw 33, a screw 34, a spring insertion hole 4, a spring 41, a protruding part 5, a valve clack 51, a mounting hole 52, a spring insertion hole 6, a valve shaft 61 and a shaft shoulder.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, the utility model discloses an anti-rotation axial flow check valve, which comprises a valve body 1 and a valve seat 2 integrated with the valve body, wherein the integrated structure is convenient for processing and has high strength; the inner cavity overflowing surface of the valve body 1 is designed in a streamline structure, and fluid resistance is reduced.
The anti-rotation axial flow check valve further comprises a support frame 1a arranged on the left side inside the valve body 1, a valve sleeve 3 arranged on the right side inside the valve body 1, a valve clack assembly arranged inside the valve body 1 and a spring 4.
The support frame 1a is longitudinally arranged, the upper end and the lower end of the support frame are both connected with the valve body 1, the connection mode is not specifically limited, and the support frame can be welded or disassembled; the center of the support frame 1a is provided with a through hole which transversely penetrates through the support frame, a bearing 11 is arranged in the through hole, and the bearing 11 and the support frame 1a are fixed through a screw 12.
The interior of the valve sleeve 3 is hollow, the outer side of the valve sleeve 3 is of a streamline elliptic structure and is provided with a pressure balance hole, the center of the valve sleeve 3 is provided with a through hole transversely penetrating through the valve sleeve, a bearing 31 is arranged in the through hole, and the bearing 31 and the valve sleeve 3 are fixed through a screw 32; the tail part of the valve sleeve 3 is fixed on the valve body 1 through a screw 33; the outer ring of the through hole of the valve sleeve 3 is provided with a spring jack 34 arranged around the circumferential direction of the through hole.
The valve clack assembly consists of a valve shaft 6 and a valve clack 5, a sealing surface of the valve clack 5 is in contact with a sealing surface of the valve seat 2, the sealing surfaces of the valve clack 5 and the valve seat 2 are conical surfaces, and Stellite hard alloy is surfacing welded on the surfaces; the valve clack 5 is umbrella-shaped, and the mass is as small as possible on the premise of meeting the strength; the center of the valve clack 5 is provided with a mounting hole 51 transversely penetrating through the valve clack, the valve shaft 6 sequentially penetrates through a through hole on the support frame 1a and a mounting hole on the valve clack 5 and extends into a through hole of the valve sleeve 3, the valve shaft 6 is positioned with the valve clack 5 through a shaft shoulder 61, and the valve shaft 6 and the valve clack 5 are welded together; the spring insertion hole 52 is formed around the circumference of the mounting hole 51 in the outer periphery of the mounting hole of the valve plate 5, and the spring insertion hole 52 is formed to face the spring insertion hole 34 of the valve housing 3.
Both ends of the spring 4 are provided with protruding parts 41, the spring 4 is sleeved on the valve shaft 6, both ends of the spring are respectively embedded into the spring insertion holes of the valve clack 5 and the valve sleeve 3 for fixing, and the size of the spring insertion hole is the same as that of the protruding parts.
The device is characterized in that a valve body 1 is made of carbon steel materials, a valve seat 2 integrated with the valve body is subjected to build-up welding of Stellite hard alloy, and then a sealing conical surface of the valve seat and a bearing through hole are subjected to finish machining; the valve sleeve is made of carbon steel materials, is fixed with the valve body after rough machining, and simultaneously finishes the inner hole of the bearing and the through hole of the valve body support frame in a finish machining mode to ensure the coaxiality; the valve clack is made of stainless steel materials, Stelite hard alloy is welded on a sealing surface after rough machining, residual stress is eliminated through heat treatment after the valve clack is welded with the valve shaft, and then integral finish machining is carried out; the spring is made of Inconel material and has reliable dynamic loading and corrosion resistance.
The utility model has the advantages as follows:
1) the opening and closing are rapid and smooth: the umbrella-shaped valve clack of the axial-flow check valve has short stroke and small resistance of the streamline structure design, and can realize quick opening and closing. The double-support structure adds reasonable machining matching precision, and the sliding blocking condition of the valve shaft is greatly reduced.
2) The flow resistance is small, the energy consumption is low: the streamline flow channel can ensure that the fluid is in a laminar flow state, the flow resistance coefficient is small, and the energy consumption is low. The working medium can open the valve completely only by overcoming the spring force and the friction force, and the energy consumption of the operation can be reduced to the maximum extent on the premise of fully ensuring the flow area.
3) Smooth and low-noise: the opening and closing of the umbrella-shaped valve clack are always in dynamic balance, the operation is stable, the reflux speed is low at the closing moment, and the impact, noise and water hammer effect are reduced.
4) The sealing performance is reliable: the light-weight and low-inertia umbrella-shaped valve clack has small impact force on the valve seat after being closed by a short stroke, and can effectively reduce the leakage caused by the damage of the sealing surface of the valve seat.
5) Rotation prevention and falling prevention: by properly limiting the torsion of the spring, the relative rotation between the valve shaft and the bearing is prevented, and the problem that the valve shaft is seriously abraded due to the fact that the valve clack is driven to rotate by the medium rotation tendency in the working process is solved; the valve shaft and the valve clack are welded and fixed and then are subjected to finish machining, and the problem that the valve shaft and the valve clack possibly fall off in the medium conveying process is solved.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. Prevent rotating axial-flow check valve, including the valve body and with the integrative disk seat of valve body, its characterized in that, prevent rotating axial-flow check valve still includes:
the support frame is arranged on the left side in the valve body and is longitudinally arranged, and the upper end and the lower end of the support frame are both connected with the valve body; a through hole transversely penetrating through the support frame is formed in the center of the support frame, a bearing is arranged in the through hole, and the bearing and the support frame are fixed through screws;
the valve sleeve is arranged on the right side in the valve body, a through hole transversely penetrating through the valve sleeve is formed in the center of the valve sleeve, a bearing is arranged in the through hole, and the bearing and the valve sleeve are fixed through a screw; the tail part of the valve sleeve is fixed on the valve body through a screw; the outer ring of the through hole of the valve sleeve is provided with a spring jack arranged around the circumferential direction of the through hole;
the valve clack assembly is arranged in the valve body and consists of a valve shaft and a valve clack, the center of the valve clack is provided with a mounting hole transversely penetrating through the valve clack, the valve shaft sequentially penetrates through a through hole in the support frame and the mounting hole in the valve clack and extends into the through hole of the valve sleeve, and the valve shaft and the valve clack are welded together; the outer ring of the mounting hole of the valve clack is provided with a spring jack arranged around the circumferential direction of the mounting hole, and the spring jack is arranged opposite to the spring jack on the valve sleeve;
the spring, the both ends of spring all are equipped with the lug, and the spring housing is established on the valve shaft, and both ends imbed respectively in the circular spring jack of valve clack and valve barrel.
2. The anti-rotation axial flow check valve as recited in claim 1, wherein the valve housing is hollow inside, and the outer side of the valve housing has a streamlined oval-shaped structure and is provided with pressure-balancing holes.
3. An anti-rotation axial flow check valve according to claim 1, wherein the sealing surface of the valve flap is in contact with the sealing surface of the valve seat, the sealing surfaces of the valve flap and the valve seat are both tapered surfaces, and Stellite carbide is deposited on the surfaces.
4. The anti-rotation axial flow check valve according to claim 1, wherein the spring insertion hole and the protrusion are the same size.
5. An anti-rotation axial flow check valve according to claim 1 or 3, wherein the valve flap is umbrella-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921261984.3U CN210423843U (en) | 2019-08-06 | 2019-08-06 | Anti-rotation axial flow check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921261984.3U CN210423843U (en) | 2019-08-06 | 2019-08-06 | Anti-rotation axial flow check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423843U true CN210423843U (en) | 2020-04-28 |
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ID=70385804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921261984.3U Active CN210423843U (en) | 2019-08-06 | 2019-08-06 | Anti-rotation axial flow check valve |
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| Country | Link |
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| CN (1) | CN210423843U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484020A (en) * | 2022-01-26 | 2022-05-13 | 宁波一机阀门制造有限公司 | Suspension type double-seat metal hard sealing check valve without shaft and sleeve |
| US11976747B2 (en) | 2019-03-20 | 2024-05-07 | Danfoss A/S | Compressor unit with a damped axial check valve for a discharge outlet |
-
2019
- 2019-08-06 CN CN201921261984.3U patent/CN210423843U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11976747B2 (en) | 2019-03-20 | 2024-05-07 | Danfoss A/S | Compressor unit with a damped axial check valve for a discharge outlet |
| CN114484020A (en) * | 2022-01-26 | 2022-05-13 | 宁波一机阀门制造有限公司 | Suspension type double-seat metal hard sealing check valve without shaft and sleeve |
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