CN112240418A - Stable Y-shaped stop check valve - Google Patents
Stable Y-shaped stop check valve Download PDFInfo
- Publication number
- CN112240418A CN112240418A CN201910640367.2A CN201910640367A CN112240418A CN 112240418 A CN112240418 A CN 112240418A CN 201910640367 A CN201910640367 A CN 201910640367A CN 112240418 A CN112240418 A CN 112240418A
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- CN
- China
- Prior art keywords
- valve
- check valve
- stop check
- clack
- steady state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention belongs to a stable Y-shaped stop check valve, and particularly relates to a Y-shaped stop check valve with spring buffering and bypass balancing technologies. The utility model provides a stable state Y type stop check valve, includes the valve body, and the valve body is inside to be equipped with the runner, sets up the valve clack in the runner, valve clack and valve rod fixed connection, and the other end of valve rod sets up manual device. The invention has the following remarkable effects: (1) the valve clack is prevented from generating impact noise. (2) The noise is reduced. (3) The valve mitigates the impact of the media pressure on the valve flap. (4) The service life is prolonged.
Description
Technical Field
The invention belongs to a stable Y-shaped stop check valve, and particularly relates to a Y-shaped stop check valve with spring buffering and bypass balancing technologies.
Background
The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. Check valves of this type function to allow fluid flow in one direction only and to prevent flow in the opposite direction. Typically such valves are self-actuating, with the flap opening under the pressure of a fluid flowing in one direction; when the fluid flows in the opposite direction, the valve flap is combined by the fluid pressure and the self-weight of the valve flap to act on the valve seat, thereby cutting off the flow.
The stop valve is a valve with a valve clack driven by a valve rod to move up and down along the central line of a valve seat. The axis of the valve rod of the stop valve is vertical to the sealing surface of the valve seat, and the flowing direction of the medium is changed when the medium passes through the valve, so that the flow resistance of the stop valve is higher than that of other valves. The shut-off valve has a very reliable shut-off action, the main function being to shut off the flow of fluid in the pipe. The shut-off valve types can be straight-through, angle and "Y" straight-through, as well as a shut-off check valve. The middle cavity of the valve body of the straight-through stop valve is vertical to a valve body channel, the inlet channel of the valve body of the angle stop valve is vertical to the outlet channel of the valve body, the middle cavity of the valve body of the Y-shaped stop valve and the valve body channel generally form an inclined angle of 45 degrees, the inlet channel and the outlet channel are linearly connected, the circulation capacity is strong, and the stop check valve is a valve with double functions of a stop valve and a check valve. The stop check valve is structurally characterized in that the valve rod does not drive the valve clack to move when rising, when the valve rod is positioned at the full-open position of the valve, the position of the valve clack in the valve cavity is determined by fluid pressure, the fluid pushes the valve clack valve to open in the forward direction and pushes the valve clack valve to close in the reverse direction, and the function of the check valve is realized; when the valve needs to be forcibly closed, the valve is operated to enable the valve rod and the valve clack to move downwards until the valve is closed, and the function of the stop valve is realized. Therefore, the Y-shaped stop check valve has the double functions of a stop valve and a check valve and also has strong flow capacity.
The Y-shaped stop check valve operated on the petrochemical device can generate noise due to unstable pipeline pressure, the noise is caused by the valve clack impacting the valve body, and the valve can be damaged due to long-term impact. Therefore, a valve with a special structure is expected to solve the impact noise of the valve, and a stable Y-shaped stop check valve is produced accordingly.
Disclosure of Invention
The invention aims to provide a stable Y-shaped stop check valve aiming at the defects of the prior art.
The invention is realized by the following steps: the utility model provides a stable state Y type stop check valve, includes the valve body, and the valve body is inside to be equipped with the runner, sets up the valve clack in the runner, and valve clack and valve rod non-fixed connection, the other end of valve rod sets up manual device.
The stable Y-shaped stop check valve is characterized in that a sealing assembly is further arranged on the periphery of the valve rod, and the sealing assembly is used for sealing the valve rod.
The stable Y-shaped stop check valve comprises a packing and a packing pressing mechanism, wherein the packing pressing mechanism is fixed on a packing box, and the packing is arranged in the packing box.
The stable Y-shaped stop check valve is characterized in that the lower part of the valve rod is sleeved with the spiral spring, one end of the spring is installed in the valve clack hole, and the other end of the spring is positioned and installed in the stuffing box hole.
The stable Y-shaped stop check valve is characterized in that the stuffing box and the valve body are sealed through the sealing ring.
A stable Y-stop check valve as described above wherein four open rings are also provided around the stuffing box next to the seal ring.
The steady-state Y-shaped stop check valve is characterized in that a sealing pre-tightening mechanism for a sealing ring is further arranged on the side wall of the stuffing box.
A stable Y-stop check valve as described above wherein the valve stem is trapezoidal threaded with the hand operated device through the bracket.
A stable Y-stop check valve as described above wherein the valve further comprises a balance tube connecting the valve body lumen and the outlet end for balancing the two-port pressure.
The stable Y-shaped stop check valve is characterized in that the inner cavity and the upper end face of the valve clack are provided with pressure balance holes.
The stable Y-shaped stop check valve is characterized in that STL hard alloy is welded on the upper guide surface and the lower guide surface of the valve clack.
The invention has the following remarkable effects: (1) the spiral spring is arranged in the valve clack hole, and when the valve clack moves upwards, the valve clack plays a role in buffering and prevents the valve clack from generating impact noise. (2) The valve body is provided with an external bypass pipe which is communicated with the middle cavity and the outlet end of the valve body to balance the pressure of the upper part of the middle cavity and the pressure of the outlet end, so that the valve clack is opened and closed smoothly, the rotary valve clack is prevented from being blocked, and the noise is further reduced. (3) The valve clack is internally provided with a pressure balance hole to ensure the internal and external pressure matching of the valve clack, and the upper end surface is also provided with a pressure balance hole to ensure the upper and lower pressure balance of the valve clack; the two balancing holes are arranged to reduce the impact influence of the medium pressure on the valve clack. (4) STL hard alloy is welded on the upper and lower guide surfaces of the valve clack, which has obvious hardness difference with the guide surface of the middle cavity of the valve body, the valve clack moves flexibly up and down, and the service life is prolonged.
Drawings
FIG. 1 is a schematic structural view of a stable Y-shaped check valve provided in the present invention;
in the figure: 1. a valve body; 2. the valve clack 3 is a valve rod; 4. a spring; 5. a stuffing box; 6. a seal ring; 7. opening a ring; 8. a sealing pre-tightening mechanism; 9. a filler; 10. a packing hold down mechanism; 11. a valve rod rotation prevention mechanism; 12. a manual device; 13. a support; 14. balance tube
Detailed Description
The valve 1. the valve body has horizontal channel and inclined middle chamber, 2. the valve flap is guided by the middle chamber of the valve body, move up and down along the middle chamber under the influence of medium, valve flap cavity and upper end have pressure balance hole, two pieces of annular guide surface build-up welding STL carbide of valve flap up and down; 3. the valve stem is normally in the valve open position; 4. the spring is movably sleeved on the valve rod, the lower end of the spring is arranged in the valve flap hole, and the upper end of the spring is arranged in the 5-degree packing box hole; 6. the internal pressure of the sealing ring acts on the 7-four open rings; 8. the sealing pre-tightening mechanism provides initial specific pressure for self-tightening sealing of the middle cavity; the valve rod is sealed by 9 filler, and 10 the filler pressing mechanism provides the filler sealing force; 11. the valve rod anti-rotation mechanism ensures that the valve rod only lifts and does not rotate; 12. the manual device provides valve opening and closing torque; 13. the bracket is connected with the valve body and the manual device and provides anti-rotation connection for the valve rod; 14. the balance pipe is connected with the middle cavity and the outlet end of the valve body to balance the pressure at the two ends.
The spiral spring is arranged in the valve clack hole, and when the valve clack moves upwards, the valve clack plays a role in buffering and prevents the valve clack from generating impact noise.
The valve body is provided with an external bypass pipe which is communicated with the middle cavity and the outlet end of the valve body and balances the pressure of the upper part of the middle cavity and the pressure of the outlet end, so that the valve clack is opened and closed smoothly, the valve clack is prevented from being blocked, and the noise is further reduced.
The valve clack is internally provided with a pressure balance hole to ensure the internal and external pressure matching of the valve clack, and the upper end surface is also provided with a pressure balance hole to ensure the upper and lower pressure balance of the valve clack; the two balancing holes are arranged to reduce the impact influence of the medium pressure on the valve clack.
STL hard alloy is welded on the upper and lower guide surfaces of the valve clack, which has obvious hardness difference with the guide surface of the middle cavity of the valve body, the valve clack moves flexibly up and down, and the service life is prolonged.
The structure technology for realizing the purpose of the invention is as follows:
1) the spiral spring is arranged in the valve clack hole, and when the valve clack moves upwards, the valve clack plays a role in buffering and prevents the valve clack from generating impact noise.
2) The valve body is provided with an external bypass pipe which is communicated with the middle cavity and the outlet end of the valve body to balance the pressure of the upper part of the middle cavity and the pressure of the outlet end, so that the valve clack is opened and closed smoothly, the rotary valve clack is prevented from being blocked, and the noise is further reduced.
3) The valve clack is internally provided with a pressure balance hole to ensure the internal and external pressure matching of the valve clack, and the upper end surface is also provided with a pressure balance hole to ensure the upper and lower pressure balance of the valve clack; the two balancing holes are arranged to reduce the impact influence of the medium pressure on the valve clack.
4) STL hard alloy is welded on the upper and lower guide surfaces of the valve clack, which has obvious hardness difference with the guide surface of the middle cavity of the valve body, the valve clack moves flexibly up and down, and the service life is prolonged.
Claims (11)
1. A steady state Y-shaped stop check valve is characterized in that: the valve comprises a valve body (1), a flow channel is arranged in the valve body (1), a valve clack (2) is arranged in the flow channel, the valve clack (2) is in non-fixed connection with a valve rod (3), and a manual device (12) is arranged at the other end of the valve rod (3).
2. A stable Y-stop check valve as defined in claim 1 wherein: a sealing assembly is arranged on the periphery of the valve rod (3) and is used for sealing the valve rod (3).
3. A steady state Y-stop check valve as defined in claim 2 wherein: the sealing assembly comprises a stuffing box (5) and a stuffing pressing mechanism (10), wherein the stuffing pressing mechanism (10) is fixed on the stuffing box (5), and stuffing (9) is arranged in the stuffing box (5).
4. A steady state Y-stop check valve as defined in claim 3 wherein: the lower part of the valve rod is sleeved with a spiral spring, one end of the spring is installed in the valve flap hole, and the other end of the spring is installed in the filler box hole in a positioning mode.
5. A steady state Y-stop check valve as defined in claim 4 wherein: the stuffing box (5) and the valve body (1) are sealed by a sealing ring (6).
6. A steady state Y-stop check valve as defined in claim 5 wherein: and four open rings (7) are arranged around the stuffing box (5) beside the sealing ring (6).
7. A steady state Y-stop check valve as defined in claim 6 wherein: and a sealing pre-tightening mechanism (8) for a sealing ring is also arranged on the side wall of the stuffing box (5).
8. A steady state Y-stop check valve as defined in claim 7 wherein: the valve rod (3) is connected with the trapezoidal thread of the manual device (12) through a bracket (13).
9. A steady state Y-stop check valve as defined in claim 8 wherein: the valve further comprises a balance pipe (14), and the balance pipe (14) is connected with the middle cavity and the outlet end of the valve body and is used for balancing the pressure at the two ends.
10. A steady state Y-stop check valve as defined in claim 9 wherein: the inner cavity and the upper end face of the valve clack are provided with pressure balance holes.
11. A steady state Y-stop check valve as defined in claim 9 wherein: STL hard alloy is welded on the upper and lower guide surfaces of the valve clack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640367.2A CN112240418A (en) | 2019-07-16 | 2019-07-16 | Stable Y-shaped stop check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640367.2A CN112240418A (en) | 2019-07-16 | 2019-07-16 | Stable Y-shaped stop check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112240418A true CN112240418A (en) | 2021-01-19 |
Family
ID=74167046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910640367.2A Pending CN112240418A (en) | 2019-07-16 | 2019-07-16 | Stable Y-shaped stop check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112240418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542725A (en) * | 2022-03-03 | 2022-05-27 | 上海亚核阀业成套有限公司 | Fused salt stop valve |
-
2019
- 2019-07-16 CN CN201910640367.2A patent/CN112240418A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542725A (en) * | 2022-03-03 | 2022-05-27 | 上海亚核阀业成套有限公司 | Fused salt stop valve |
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