CN215673662U - Double-head sleeved stop valve - Google Patents
Double-head sleeved stop valve Download PDFInfo
- Publication number
- CN215673662U CN215673662U CN202120886053.3U CN202120886053U CN215673662U CN 215673662 U CN215673662 U CN 215673662U CN 202120886053 U CN202120886053 U CN 202120886053U CN 215673662 U CN215673662 U CN 215673662U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve head
- head
- movable
- double
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims description 13
- 208000010727 head pressing Diseases 0.000 claims description 12
- 230000003044 adaptive effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 19
- 239000010410 layer Substances 0.000 description 11
- 230000006978 adaptation Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- F16K1/42—Valve seats
-
- 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
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The utility model relates to a double-head sleeved stop valve, which comprises a valve shell and a valve seat fixedly connected in the valve shell, wherein the valve seat divides the interior of the valve shell into a liquid inlet cavity and a liquid outlet cavity, a valve port is arranged on the valve seat, a valve head matched with the valve port is arranged in the valve shell, a counter bore is arranged at one end of the valve head facing the valve port, a movable valve head matched with the valve port is arranged in the counter bore, the valve head and the movable valve head form a double-layer sealing structure for the valve port, the double-head sleeved stop valve also comprises a valve head driving device for driving the valve head to move towards the valve port direction and a movable valve head driving device for driving the movable valve head to be tightly pressed on the valve port, the valve head is tightly pressed on the valve seat through the valve head to cover the valve port on the valve seat, and the movable valve head is driven to move downwards through the movable valve head driving device to be blocked on the valve port, thereby realizing double-layer sealing, improving the sealing effect and preventing leakage through injecting high-pressure gas, further prevent the medium leakage in the stop valve, play better safe effect.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a double-head sleeved stop valve.
Background
A shut-off valve refers to a valve in which the closure member (head) moves along the centerline of the valve seat. According to this form of movement of the valve head, the valve seat port varies in direct proportion to the valve head stroke. The valve rod of the valve has relatively short opening or closing stroke and reliable cut-off function, and the valve is suitable for regulating flow rate owing to the proportional relation between the valve seat port and the valve head stroke. Valves of this type are therefore very suitable for use as shut-off or regulating valves and as throttles, the closing of the valves being effected by the pressing of the valve head against the valve seat, there being still a certain risk of the valve head and the valve seat being sealed by a single layer in the lines for hazardous or toxic gases.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the double-end sleeved stop valve, which can improve the sealing property of the stop valve and the safety coefficient of the stop valve.
The utility model is realized by the following technical scheme, and provides a double-head sleeved stop valve, which comprises a valve shell and a valve seat fixedly connected in the valve shell, wherein the valve seat divides the interior of the valve shell into a liquid inlet cavity and a liquid outlet cavity, a valve port is formed in the valve seat, a valve head adaptive to the valve port is arranged in the valve shell, a counter bore is formed in one end, facing the valve port, of the valve head, a movable valve head adaptive to the valve port is arranged in the counter bore, the valve head and the movable valve head form a double-layer sealing structure for the valve port, and the double-head sleeved stop valve further comprises a valve head driving device for driving the valve head to move towards the valve port direction and a movable valve head driving device for driving the movable valve head to be pressed on the valve port.
The valve head drive arrangement in this scheme drives the valve head and reciprocates, when the valve head compresses tightly on the disk seat, covers the valve port on the disk seat through the valve head, separates feed liquor chamber and play liquid chamber, makes the stop valve close, drives movable valve head downstream through movable valve head drive arrangement simultaneously, makes movable valve head block up on the valve port to realize double-deck sealed, improve sealed effect, prevent to leak.
Preferably, the valve seat is provided with a high-pressure air hole, one end of the high-pressure air hole is communicated with high-pressure gas, and the other end of the high-pressure air hole is communicated with a counter bore on the bottom surface of the valve head. In this scheme through high-pressure gas pours into the counter bore into, make and keep high-pressure state in the counter bore, when having the leakage between movable valve head and the valve port, high-pressure gas can prevent that gas or liquid in the pipeline from leaking to avoid hazardous gas or toxic gas to leak and lead to the accident, can also communicate counter bore and external world through high-pressure gas pocket simultaneously, be used for detecting whether there is the medium in the counter bore, thereby detect double-deck seal structure whether there is the seepage.
Preferably, the lower end of the movable valve head is inserted into the valve port, the lower end of the movable valve head is conical, and a conical surface matched with the lower end of the movable valve head is arranged on the valve port. The lower extreme of the movable valve head is the toper in this scheme to through inserting the toper face, improve the seal between movable valve head and the valve port.
Preferably, a movable valve head boss is arranged at the upper part of the movable valve head, and a stop block positioned below the movable valve head boss is arranged in a counter bore of the valve head. The dog setting in this scheme is in activity valve head boss below to prevent that activity valve head from deviating from in the counter bore of valve head, can drive the activity valve head when the valve head rises and rise together.
Preferably, the valve head driving device comprises a valve head driving shaft connected to the upper end of the valve head, and the valve head driving shaft is connected with the valve casing through threads. Valve head drive shaft passes through threaded connection with the valve casing in this scheme, can realize the lift of valve head drive shaft through the rotation of valve head drive shaft to drive the valve head and reciprocate.
Preferably, a driving shaft sleeve is fixedly connected to the upper end of the valve casing, and the valve head driving shaft is in threaded connection with the driving shaft sleeve. Valve head drive shaft and drive axle sleeve threaded connection in this scheme to be convenient for set up sealing device between valve casing and the valve head drive shaft.
Preferably, a driving shaft boss positioned in the valve head is fixedly arranged on the outer circumferential surface of the valve head driving shaft, the driving shaft boss and the valve head driving shaft can rotate relative to the valve head, and a valve head limiting sleeve matched with the driving shaft boss is fixedly connected to the upper end of the valve head. The upper end rigid coupling of valve head has the valve head stop collar with drive shaft boss adaptation in this scheme to with the restriction of drive shaft boss in the valve head, make valve head drive shaft and valve head together go up and down, and drive shaft boss and valve head drive shaft valve head relatively rotate, thereby reduce the relative rotation between valve head and the disk seat when compressing tightly, reduce wearing and tearing.
Preferably, the movable valve head driving device comprises a movable valve head pressing rod arranged above the movable valve head, and the movable valve head pressing rod is in threaded connection with the inside of the valve head driving shaft. In this scheme movable valve head depression bar threaded connection in the valve head drive shaft to through rotating movable valve head depression bar, make movable valve head depression bar for valve head drive shaft downstream, compress tightly movable valve head downstream.
Preferably, the upper end of the valve head driving shaft is fixedly connected with a pressure rod sleeve, and the movable valve head pressure rod is in threaded connection with the pressure rod sleeve. In this scheme, the movable valve head pressure rod is in threaded connection with the pressure rod sleeve, so that a sealing device is arranged between the movable valve head pressure rod and the valve head driving shaft conveniently.
Preferably, the movable valve head driving device comprises a communication hole communicated to the upper part of the movable valve head, and the movable valve head can be driven to move downwards to be pressed on the valve seat by injecting gas into the communication hole.
The utility model has the beneficial effects that: according to the double-head sleeved stop valve, the valve head is tightly pressed on the valve seat to enable the valve head to cover the valve port on the valve seat, and meanwhile, the movable valve head is driven by the movable valve head driving device to move downwards to enable the movable valve head to be blocked on the valve port, so that double-layer sealing is realized, the sealing effect is improved, leakage is prevented, high-pressure gas is injected to further prevent medium in the stop valve from leaking, and a better safety effect is achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention in an open state;
FIG. 3 is a cross-sectional view of a valve seat of the present invention;
FIG. 4 is a cross-sectional view of a movable valve head of the present invention;
FIG. 5 is a cross-sectional view of the valve head of the present invention;
FIG. 6 is a cross-sectional view of the valve head drive shaft of the present invention;
FIG. 7 is a cross-sectional view of a valve head stop collar of the present invention;
FIG. 8 is a cross-sectional view of a movable valve head strut of the present invention;
FIG. 9 is a schematic structural view of example 3 of the present invention;
FIG. 10 is a schematic structural view of a valve head driving device according to embodiment 4 of the present invention;
FIG. 11 is a schematic structural view of example 5 of the present invention;
FIG. 12 is a schematic structural view of example 6 of the present invention;
FIG. 13 is a schematic structural view of example 7 of the present invention;
shown in the figure:
1. valve casing, 2, disk seat, 3, valve head sleeve, 4, valve head connecting block, 5, movable valve head, 6, movable valve head depression bar, 7, valve head drive shaft, 8, valve head stop collar, 9, drive axle sleeve, 10, depression bar cover, 11, high pressure gas pocket, 12, intercommunicating pore, 13, spring, 14, movable valve head intercommunicating pore.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Example 1:
as shown in fig. 1 to 8, the double-headed packing stop valve of the present invention includes a valve housing 1 and a valve seat 2 fixed in the valve housing 1.
The inlet and the export are connected respectively to 1 both ends opening of valve casing, and flange is equipped with to the opening part, and 2 horizontal rigid couplings of disk seat are in valve casing 1, and disk seat 2 divides into feed liquor chamber and play liquid chamber in with valve casing 1, and general below is the feed liquor chamber, and the top is for going out the liquid chamber.
The valve seat 2 is annular, a valve port is formed in the valve seat 2 and is a circular port, and the axis of the valve port is vertically arranged.
The valve head comprises a valve head sleeve 3 and a valve head connecting block 4 fixedly connected to the upper end of the valve head sleeve 3, the valve head sleeve 3 is annular, and the inner part of the valve head sleeve 3 is provided with a counter bore matched with the bottom surface of the valve head.
The lower terminal surface of valve head sleeve 3 compresses tightly the laminating at the up end of disk seat 2 to cut off feed liquor chamber and play liquid chamber, in 5 lower extremes of movable valve head inserted the valve port simultaneously, the lower extreme of movable valve head 5 was the toper, was equipped with the conical surface with 5 lower extreme adaptations of movable valve head on the valve port, thereby plugged up the valve port through movable valve head 5, realized double-deck sealedly.
The valve head driving device is used for driving the valve head to move towards the valve port, and the movable valve head driving device is used for driving the movable valve head 5 to be pressed on the valve port.
Valve head drive arrangement is including connecting valve head drive shaft 7 in the valve head upper end, and valve head drive shaft 7 is vertical round axle, and the upper end of valve head drive shaft 7 stretches out to valve casing 1 upper end, is equipped with handle or hand wheel on the valve head drive shaft 7, and it is rotatory to be convenient for drive valve head drive shaft 7 with the hand.
The upper end of the valve casing 1 is fixedly connected with a driving shaft sleeve 9, and the valve head driving shaft 7 is in threaded connection with the driving shaft sleeve 9, so that the valve head driving shaft 7 is in threaded connection with the valve casing 1.
The lower end of the valve head driving shaft 7 is inserted into the valve head connecting block 4, a driving shaft boss located in the valve head connecting block 4 is fixedly arranged on the outer circumferential surface of the valve head driving shaft 7, the driving shaft boss and the valve head driving shaft 7 can rotate relative to the valve head, a valve head limiting sleeve 8 matched with the driving shaft boss is fixedly connected to the upper end of the valve head, and the valve head limiting sleeve 8 is fixed to the upper end face of the valve head connecting block 4 through bolts and used for limiting the valve head driving shaft 7 and the valve head to move up and down relatively.
A sealing ring is arranged between the valve head driving shaft 7 and the valve casing 1 to prevent the valve head driving shaft 7 from leaking out of the valve casing 1.
The movable valve head driving device comprises a movable valve head pressing rod 6 arranged above the movable valve head 5, the movable valve head pressing rod 6 is inserted into a valve head driving shaft 7 and is arranged concentrically, and a sealing ring is arranged between the movable valve head pressing rod 6 and the valve head driving shaft 7.
The lower end of the movable valve head pressure lever 6 is pressed against the upper end face of the movable valve head 5, and the upper end face of the movable valve head 5 is provided with a counter bore matched with the lower end of the valve head pressure lever 6.
The upper end of the movable valve head pressing rod 6 is higher than the valve head driving shaft 7, and the upper end of the movable valve head pressing rod 6 is provided with a handle or a hand wheel, so that the movable valve head pressing rod 6 can be driven to rotate by hands conveniently.
The upper end of the valve head driving shaft 7 is fixedly connected with a pressure rod sleeve 10, and the movable valve head pressure rod 6 is in threaded connection with the pressure rod sleeve 10, so that the movable valve head pressure rod 6 is in threaded connection with the valve head driving shaft 7.
The upper portion of movable valve head 5 is equipped with movable valve head boss, is equipped with the dog that is located movable valve head boss below in the counter bore of valve head to prevent that movable valve head from deviating from in the counter bore of valve head, can drive movable valve head and rise together when the valve head rises, movable valve head 5 can reciprocate certain distance in the counter bore simultaneously, and when the medium flowed from bottom to top, promoted movable valve head 5 and upwards removed to the top of counter bore.
The application method of the embodiment comprises the following steps: when the valve is closed, the valve head driving shaft 7 is rotated through the handle or the hand wheel to drive the valve head to be pressed downwards on the valve seat 2, the valve port on the valve seat 2 is covered through the valve head, the liquid inlet cavity and the liquid outlet cavity are separated, the stop valve is closed, then the movable valve head pressing rod 6 is rotated through the handle or the hand wheel, the movable valve head pressing rod 6 moves downwards, the movable valve head is blocked on the valve port, double-layer sealing is achieved, the sealing effect is improved, leakage is prevented, and when the valve is opened, the actions are opposite.
Example 2:
as shown in fig. 1 to 3, the present embodiment is different from embodiment 1 in that:
the high-pressure gas hole 11 is formed in the valve seat 2, one end of the high-pressure gas hole 11 is communicated with high-pressure gas through a high-pressure pipeline, the other end of the high-pressure gas hole 11 is communicated with a counter bore in the bottom surface of the valve head, and therefore high-pressure gas is injected into the middle of the double-layer sealing structure, and no matter which side of the double-layer sealing structure leaks, the leaked medium can be prevented from leaking to the other layer of sealing structure through the high-pressure gas.
Meanwhile, the counter bore can be communicated with the outside through the high-pressure air hole 11 to detect whether a medium exists in the counter bore, so that whether the double-layer sealing structure leaks or not is detected.
Example 3:
as shown in fig. 1 to 9, the present embodiment is different from embodiment 1 in that:
the movable valve head driving device comprises a communicating hole 12 communicated to the upper side of the movable valve head 5, the communicating hole 12 in the embodiment is arranged in the center of a valve head driving shaft 7, the upper end of the communicating hole 12 is communicated with an air source, the lower end of the communicating hole 12 is communicated to a counter bore in the upper side of the movable valve head 5, and a sealing ring is arranged between the valve head driving shaft 7 and a valve head sleeve to play a sealing role.
By injecting gas into the communicating hole, the movable valve head can be driven to move downwards and be pressed on the valve seat.
Example 4:
as shown in fig. 10, the present embodiment is different from embodiment 1 in that:
the valve head drive shaft 7 of this embodiment passes through cylinder or oil cylinder drive, and is sealed between valve head drive shaft 7 and the valve casing 1, reciprocates through passing through cylinder or oil cylinder drive valve head drive shaft 7 to drive the valve head and go up and down, valve head drive shaft 7 is the hollow tube, the upper end shutoff, and open to the side has the connecting hole, through injecting into gas or liquid in the connecting hole, can promote movable valve head 5 downwards, thereby realizes the remote control of whole stop valve.
Example 5:
as shown in fig. 1 to 11, the present embodiment is different from embodiment 1 in that:
the movable valve head driving device comprises a spring 13 arranged between a movable valve head 5 and a valve head connecting block 4, a counter bore is formed in the upper end face of the movable valve head 5, the lower portion of the spring 13 is inserted into the counter bore to achieve positioning and guiding effects, and the movable valve head is tightly pressed on a valve port through the elasticity of the spring 13.
The movable valve head driving device further comprises a communicating hole 12 communicated to the upper side of the movable valve head 5, the communicating hole 12 in the embodiment is formed in the center of the valve head driving shaft 7, the lower end of the communicating hole 12 is communicated to a sunken hole in the upper side of the movable valve head 5, and high-pressure media are injected into the communicating hole to drive the movable valve head to move downwards and tightly press the movable valve head on a valve seat.
And a sealing ring is arranged between the valve head driving shaft 7 and the valve head sleeve, so that an isolation sealing effect is achieved.
The valve of the embodiment is suitable for medium below 150 degrees when the valve is in low-in and high-out, when the force of the spring 13 is greater than the medium pressure, the spring closes the movable valve head 5, and when the force of the spring 13 is less than the medium pressure, the pressure medium can be injected through the communication hole 12 in the central hole of the valve rod to form resultant force with the spring force to close the movable valve head 5.
Example 6:
as shown in fig. 1 to 12, the present embodiment is different from embodiment 5 in that:
the communication hole 12 is not provided, and no seal ring is installed between the valve head drive shaft 7 and the valve head sleeve.
The valve of the embodiment is suitable for high-inlet and low-outlet, the medium temperature is higher than 150 ℃, except the pressure of the spring 13, when the valve is closed, the medium pressure presses on the valve head, and the valve forms self-pressure sealing.
Example 7:
as shown in fig. 1 to 13, the present embodiment is different from embodiment 5 in that:
the high-pressure air hole 11 is not arranged, but a movable valve head communication hole 14 is formed in the movable valve head 5, the upper end of the movable valve head communication hole 14 is communicated with the upper end of the movable valve head 5, and the lower end of the movable valve head communication hole 14 is communicated with a counter bore in the bottom surface of the valve head and the communication position is located below the sealing ring.
When the communication hole 12 is not communicated with the medium, the movable valve head communication hole 14 plays a role in detection, and when the communication hole 12 is communicated with the pressure medium, the movable valve head communication hole 14 plays a role in pressing the movable valve head and sealing. In the embodiment, when the medium pressure is smaller than the elastic force of the spring 13, the valve head can be pushed in and pushed out, and when the medium pressure is larger than the spring force, the valve head is pressed by the pressure of the medium to form self-pressure sealing.
The small valve is arranged at the outer end of the communicating hole 12, when the valve is operated, the small valve is closed to prevent the medium from leaking, the small valve is opened to detect after the valve is closed, if the medium leaks, the valve is not tight, high-pressure fluid which does not have chemical reaction with the medium can be communicated, the inner valve head is pressed, and part of the fluid passes through the movable valve head communicating hole 14 to seal the inner valve head and the outer valve head in an isolated manner.
The use method of the utility model comprises the following steps: the valve head is pressed tightly on the valve port to realize one layer of sealing structure of the valve port, and the movable valve head is inserted into the valve port to realize the other layer of sealing structure of the valve port, so that double-layer sealing of the valve port is realized, and high-pressure gas or high-pressure liquid is filled between the two layers of sealing structures, so that gas or liquid in a pipeline can be prevented from leaking due to poor sealing.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (9)
1. A kind of double-end suit stop valve, characterized by: the valve comprises a valve casing (1) and a valve seat (2) fixedly connected in the valve casing (1), wherein the valve seat (2) divides the interior of the valve casing (1) into a liquid inlet cavity and a liquid outlet cavity, a valve port is formed in the valve seat (2), a valve head adaptive to the valve port is arranged in the valve casing (1), a counter bore is formed in one end, facing the valve port, of the valve head, a movable valve head (5) adaptive to the valve port is arranged in the counter bore, the valve head and the movable valve head (5) form a double-layer sealing structure for the valve port, and the valve further comprises a valve head driving device for driving the valve head to move towards the valve port and a movable valve head driving device for driving the movable valve head (5) to be compressed on the valve port.
2. A double-headed check valve according to claim 1, characterized in that: the valve seat (2) is provided with a high-pressure air hole (11), one end of the high-pressure air hole (11) is communicated with high-pressure gas, and the other end of the high-pressure air hole (11) is communicated with a counter bore on the bottom surface of the valve head.
3. A double-headed check valve according to claim 1, characterized in that: the lower end of the movable valve head (5) is inserted into the valve port, the lower end of the movable valve head (5) is conical, and a conical surface matched with the lower end of the movable valve head (5) is arranged on the valve port.
4. A double-headed check valve according to claim 1, characterized in that: the upper part of the movable valve head (5) is provided with a movable valve head boss, and a stop block positioned below the movable valve head boss is arranged in a counter bore of the valve head.
5. A double-headed check valve according to claim 1, characterized in that: the valve head driving device comprises a valve head driving shaft (7) connected to the upper end of the valve head, and the valve head driving shaft (7) is in threaded connection with the valve casing (1).
6. A double-headed check valve according to claim 5, characterized in that: the outer circumferential surface of the valve head driving shaft (7) is fixedly provided with a driving shaft boss positioned in the valve head, the driving shaft boss and the valve head driving shaft (7) can rotate relative to the valve head, and the upper end of the valve head is fixedly connected with a valve head limiting sleeve (8) matched with the driving shaft boss.
7. A double-headed check valve according to claim 5, characterized in that: the movable valve head driving device comprises a movable valve head pressing rod (6) arranged above the movable valve head (5), and the movable valve head pressing rod (6) is in threaded connection with the inside of a valve head driving shaft (7).
8. A double-headed check valve according to claim 7, characterized in that: the upper end of the valve head driving shaft (7) is fixedly connected with a pressure rod sleeve (10), and the movable valve head pressure rod (6) is in threaded connection with the pressure rod sleeve (10).
9. A double-headed check valve according to claim 1, characterized in that: the movable valve head driving device comprises a communication hole (12) communicated to the upper part of the movable valve head (5).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110173977.3A CN112628417A (en) | 2021-02-06 | 2021-02-06 | Double-head sleeved stop valve and stop method |
| CN2021101739773 | 2021-02-06 | ||
| CN2021203371742 | 2021-02-06 | ||
| CN202120337174 | 2021-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215673662U true CN215673662U (en) | 2022-01-28 |
Family
ID=76979528
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120886053.3U Active CN215673662U (en) | 2021-02-06 | 2021-04-27 | Double-head sleeved stop valve |
| CN202110460974.8A Pending CN113187910A (en) | 2021-02-06 | 2021-04-27 | Double-head sleeved stop valve and stop method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110460974.8A Pending CN113187910A (en) | 2021-02-06 | 2021-04-27 | Double-head sleeved stop valve and stop method |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN215673662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187910A (en) * | 2021-02-06 | 2021-07-30 | 潘健 | Double-head sleeved stop valve and stop method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB840690A (en) * | 1955-09-22 | 1960-07-06 | Licentia Gmbh | Valve, particularly pressure-relieved steam valve |
| GB930908A (en) * | 1958-11-25 | 1963-07-10 | Anthony John Hardcastle | Closures for stop and control valves |
| JP2004144129A (en) * | 2002-10-22 | 2004-05-20 | Mitsubishi Heavy Ind Ltd | Gate valve |
| JP2010169133A (en) * | 2009-01-21 | 2010-08-05 | Yoshitake Inc | Valve seat construction |
| CN103174855B (en) * | 2013-03-20 | 2015-04-08 | 潘健 | Self-checking type double-valve-head regulating valve |
| CN106812484A (en) * | 2015-11-27 | 2017-06-09 | 璧典匠 | One kind is used for oilfield Multifunctional control valve |
| KR101850914B1 (en) * | 2016-09-29 | 2018-04-20 | 동아대학교 산학협력단 | Glove Valve Having Duplex Disk for Controlling Flow |
| KR102080603B1 (en) * | 2019-04-17 | 2020-02-27 | (주)하이플럭스 | Replace seat with guidelines for steams and valve with teeth |
| CN215673662U (en) * | 2021-02-06 | 2022-01-28 | 潘健 | Double-head sleeved stop valve |
-
2021
- 2021-04-27 CN CN202120886053.3U patent/CN215673662U/en active Active
- 2021-04-27 CN CN202110460974.8A patent/CN113187910A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187910A (en) * | 2021-02-06 | 2021-07-30 | 潘健 | Double-head sleeved stop valve and stop method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113187910A (en) | 2021-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110671502B (en) | Water hammer resistant stop valve | |
| CN208605418U (en) | A kind of pilot type electromagnetic switch valve | |
| CN205841844U (en) | A kind of manual flanged ball valve | |
| CN209262357U (en) | A kind of efficient sealed butterfly valve | |
| CN113187910A (en) | Double-head sleeved stop valve and stop method | |
| CN207161770U (en) | A gas emergency cut-off valve | |
| CN111677880B (en) | Pneumatic piston stop valve | |
| CN112628417A (en) | Double-head sleeved stop valve and stop method | |
| CN204922065U (en) | Hemisphere valve | |
| CN204717028U (en) | Pressure break ball screw flap type | |
| CN208831740U (en) | A kind of high pressure valve | |
| CN217842913U (en) | Balanced type stop valve | |
| CN103174855B (en) | Self-checking type double-valve-head regulating valve | |
| CN212509594U (en) | Online sampling valve for low-pressure viscous toxic liquid | |
| CN115435091A (en) | Stop valve with multiple sealing structure | |
| CN211501821U (en) | Safety valve core opening device driven by air source | |
| CN202691131U (en) | Pneumatic straight-through type diaphragm valve | |
| CN203395193U (en) | Pneumatic stop valve | |
| CN221943228U (en) | Self-closing liquefied dimethyl ether bottle valve | |
| CN202580085U (en) | Manual sealing air valve | |
| CN223388126U (en) | Bottle valve capable of adjusting flow | |
| CN222277631U (en) | A movable solenoid valve piston | |
| CN207046818U (en) | A kind of automatic filling wine device | |
| CN201071961Y (en) | Ball check valve | |
| CN211901762U (en) | Internal control type emergency cut-off valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |