CN116146723A - Electric vacuum stop valve for corrugated pipe - Google Patents
Electric vacuum stop valve for corrugated pipe Download PDFInfo
- Publication number
- CN116146723A CN116146723A CN202111400180.9A CN202111400180A CN116146723A CN 116146723 A CN116146723 A CN 116146723A CN 202111400180 A CN202111400180 A CN 202111400180A CN 116146723 A CN116146723 A CN 116146723A
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- CN
- China
- Prior art keywords
- valve
- screw shaft
- clutch
- electric vacuum
- box body
- 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
- 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
- F16K1/02—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 with screw-spindle
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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
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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
- F16K1/46—Attachment of 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
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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
- F16K31/53—Mechanical actuating means with toothed gearing
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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
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
Abstract
The electric vacuum stop valve for corrugated pipe includes one valve body with middle part connected to the valve seat and the lower box and middle part with sealing pad; the lower box body is used for positioning the screw shaft, a long round groove is formed in the lower box body, and a screw on the valve clack is clamped in the groove; the motor speed reducer is connected with the pinion through a key, the large gear is connected with the clutch through a connecting plate, the clutch is connected with the screw shaft through a key, and a hand wheel is arranged at the tail part of the screw shaft.
Description
Technical Field
The invention relates to the technical field of vacuum valves for cores, in particular to an electric vacuum stop valve for a corrugated pipe.
Background
At present, all vacuum stop valves with the drift diameter DN25 used in uranium enrichment and centrifugation systems in China are manually operated, and the valve is simple in structure and low in cost. However, the operation is inconvenient, when the system is started and the shut-off response is needed, the operation of workers on site is needed, special personnel are required to be arranged between each section or each unit, each person can only operate one valve at a time, the simultaneous opening and closing of a plurality of valves cannot be realized, and the safety and the reliability are not high. And manual valves are not suitable for frequent operation in sealed boxes.
For the valve installed and used in the sealing box, the valve is required to be light as much as possible, small in size, safe and reliable to operate and good in corrosion resistance, and electric operation is required to be adopted, so that a plurality of valves can be opened and closed simultaneously. And the opening and closing signals of the electric valve are led to the control room, so that the valve can be opened and closed quickly in the control room.
Disclosure of Invention
The invention aims at: an electric corrugated pipe vacuum stop valve is used for solving the problem that a plurality of valves are difficult to operate simultaneously when the electric corrugated pipe vacuum stop valve is used in special occasions such as uranium enrichment systems and operation in a sealing box, meeting the installation and use requirements of the valves in the sealing box and ensuring the safety and reliability of a process system.
The technical scheme of the invention is as follows: the electric vacuum stop valve for corrugated pipe includes one valve body with middle part connected to the valve seat and the lower box and middle part with sealing pad; the lower box body is used for positioning the screw shaft, a long round groove is formed in the lower box body, and a screw on the valve clack is clamped in the groove;
the motor speed reducer is connected with the pinion through a key, the large gear is connected with the clutch through a connecting plate, the clutch is connected with the screw shaft through a key, and a hand wheel is arranged at the tail part of the screw shaft;
the screw shaft is connected with the valve clack, the screw shaft is positioned on the valve body through a bearing, the lower box body is connected with the valve body and is connected with the gear box body, the pinion and the large gear are arranged in the gear box body, the gear box body is connected with the upper box body, the clutch is arranged in the upper box body, and the upper box body is covered by the clutch;
the middle part of the valve body is connected with the valve seat and the lower box body by bolts.
The lower box body plays a role in protecting a corrugated pipe assembly consisting of the valve clack, the valve seat and the corrugated pipe.
When the screw shaft rotates, the screw on the valve clack is clamped in the groove, and the valve clack and the corrugated pipe move up and down in a straight line, so that the valve clack and the sealing ring on the valve clack are separated from or tightly press the sealing surface on the valve body.
The motor speed reducer drives a pinion, the pinion is in meshed transmission with a large gear, the large gear enables the clutch to rotate through the connecting plate, and accordingly the screw shaft is driven to rotate, and when the screw shaft rotates to the condition that a sealing ring on the valve clack is in contact with a sealing surface of the valve body, the valve is closed.
The screw shaft is in threaded connection with the valve clack.
The lower box body is connected with the valve body through a screw.
The utility model also comprises a cover which covers the upper box body.
The clutch is powered on and is in a suction mode, and the upper part and the lower part of the clutch are separated when the power is off, and the tail end hand wheel of the screw shaft is rotated at the moment, so that the upper half part of the clutch rotates along with the screw shaft 6, and the lower half part of the connecting large gear is not moved.
The invention has the remarkable effects that: the valve can realize the rapid cutoff of the process system, save the manual operation cost and ensure the running stability of the process system; the sealing structure of the O-shaped ring is adopted, so that the tightness of the powder medium is ensured; when the clutch is arranged to ensure that the valve is operated manually, the related transmission part of the motor does not rotate, reverse current cannot occur, and the safety and reliability of the valve are ensured. The corrugated pipe is arranged, so that the sealing of the transmission part is realized, and the valve is ensured not to leak. The valve has small volume and low requirement on installation azimuth, and is convenient for installation and operation in a sealing box.
Drawings
FIG. 1 is a schematic view of an electric vacuum shut-off valve for a bellows according to the present invention;
in the figure: 1-a valve body 2-a sealing ring 3-a valve clack 4-a sealing gasket A5-a valve seat 6-a screw rod 7-a corrugated pipe 8-a lower box body 9-a motor 10-a gear box body 11-a pinion 12-an upper box body 13-a cover 14-a hand wheel 15-a clutch 16-a key 17-a connecting plate 18-a large gear 19-a pointer 20-a screw 21-a travel switch 22-a cover 23-a blind plate 24-a sealing gasket 25-a bolt.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
The electric vacuum stop valve for corrugated pipe includes one valve body 1, one sealing pad-24 connected to the bolt-25 and the technological pipeline and one valve with flow direction identical to that of medium; the middle part of the valve body-1 is connected with the valve seat-5 and the lower box body-8 by bolts, and the sealing gasket-4 is arranged in the middle to ensure the tightness of the valve. The lower box body-8 is used for positioning the screw shaft-6 and protecting the corrugated pipe assembly consisting of the valve clack-3, the valve seat-5 and the corrugated pipe-7, and the lower box body 8 is provided with a long round groove, and the screw-20 on the valve clack-3 is clamped in the groove, so that the valve clack-3 and the corrugated pipe-7 can only move up and down and cannot do rotary movement. When the screw shaft-6 rotates, the screw-20 on the valve clack-3 is clamped in the groove, and the valve clack-3 and the corrugated pipe-7 can only move up and down linearly, so that the valve clack-3 and the sealing ring-2 thereon are separated from or pressed against the sealing surface on the valve body-1, thereby realizing the opening and closing of the valve. When the screw-20 touches the starting travel switch, the motor is powered off, the valve is opened, and when the screw-20 touches the closing travel switch, the motor is powered off, and the valve is closed.
The rotation of the valve stem is achieved by electric or manual operation. The driving device mainly comprises: the motor reducer-9 is connected with the pinion-11 through a key 16, the pinion-11 is in meshed transmission, the large gear-18 is not directly connected with the screw shaft-6, but is connected with the clutch-15 through a connecting plate-17, the clutch-15 is connected with the screw shaft-6 through a key, and a hand wheel-14 is arranged at the tail part of the screw shaft-6. Principle of electric driving: the motor speed reducer-9 drives the pinion-11, the pinion-11 is meshed with the large gear-18 for transmission, the large gear-18 enables the clutch-15 to rotate through the connecting plate-17, and accordingly the screw shaft-6 is driven to rotate, and when the screw shaft-6 rotates until the sealing ring-2 on the valve clack-3 contacts with the sealing surface of the valve body-1, the valve is closed. When the motor is reversed, the motor is driven reversely, so that the valve is opened.
Because the clutch-15 is selected to be electrified and attracted, the upper and lower parts of the clutch are separated when the power is cut off, and the tail end hand wheel-14 of the screw shaft-6 is rotated at the moment, so that the upper half part of the clutch-15 rotates along with the screw shaft-6 and is fixedly connected with the lower half part of the large gear-18, and the requirement of motor fixation during manual operation is met. The hand wheel-14 directly drives the screw shaft-6 to rotate, so that the valve is opened and closed, and the requirement of manual operation is met.
In the structure, the screw shaft-6 is in threaded connection with the valve clack-3, the screw shaft-6 is positioned on the valve body-1 through a bearing, the lower box body-1 is connected with the valve body-1 through a screw and is connected with the gear box body-10, the pinion-11 and the large gear-18 are arranged in the gear box body-10, the gear box body-10 is connected with the upper box body-12, the clutch-15 is arranged in the upper box body-12, and finally the upper box body is covered by the cover-13 to form a closed cavity of the transmission structure.
The DN25 pipeline in the process pipeline occupies about 80 percent, and a plurality of DN25 stop valves with corresponding calibers are required to be arranged in order to realize the cutting-off requirement of materials. The shut-off valves used heretofore were all manually operated and did not require quick shut-off. The novel process system requires that a plurality of pipelines are simultaneously and rapidly unloaded or cut off, all the pipelines and valves of the system are arranged in a sealed box, the space is limited, the volume of the valve is required to be as small as possible, and meanwhile, the operation of personnel is reduced as much as possible, so that the opening and closing of the valve in a control room are realized.
The design requires that all process pipelines, valves and equipment are placed in a sealed box for operation, and in general, a motor reducer equipped with the valves is large in size and heavy, so that the installation and the operation in the sealed box are not facilitated. The mode of hollow cup motor and planetary gear reducer is adopted in this research and development, has reduced the structural dimension of motor reducer, is the mode that the concentrated system of uranium adopts direct current motor drive vacuum valve for the first time, has reduced the potential safety hazard that alternating current motor power supply brought, has saved the space, satisfies the installation demand. The closing time of the valve is controlled within 3s through the speed reducing device, so that the valve is quickly opened and closed, and the process system is quickly cut off. The diameter phi of the motor and the speed reducer is 42mm, the total length is 136mm, the volume is small, the closing moment required by the valve can be provided, and the arrangement of the system pipeline is convenient.
In order to be able to operate the electrically operated valve manually if necessary, a clutch is provided on the valve. The jaw clutch is selected by electrifying and sucking, and disconnecting. When the valve is electrified, the motor is started, the clutch is attracted, the motor rotates to drive the gear pair to rotate, the large gear rotates to drive the clutch to rotate, and the clutch drives the screw to rotate to realize opening and closing of the valve. When the valve is not electrified, the clutch is in a separation state, the valve is opened and closed by rotating the screw rod through the hand wheel, the gear pair is not rotated at the moment, the motor reducer shaft is not rotated, and the manual and electric completely separated function is realized.
Because the screw is a transmission part, reliable measures are required to ensure dynamic sealing. The design adopts the sealed mode of bellows, is connected valve clack and disk seat, and trapezoidal screw thread blind hole is opened at valve clack center, is connected with the screw rod, seals the dynamic of screw rod and insulates the outside to the passageway. The corrugated pipe is made of stainless steel and adopts a double-layer structure.
The system production process is easy to produce powder medium, the manual valve adopts a polytetrafluoroethylene gasket plane sealing type, and the phenomenon of loose closing and internal leakage of a channel easily occurs under the working environment of the powder medium. In order to meet the sealing requirement, powder accumulation is reduced, and a linear sealing mode of O-shaped ring sealing is adopted. The valve clack is provided with a trapezoid groove of the O-shaped ring, the O-shaped ring is clamped into the groove, and sealing is realized by compressing the O-shaped ring. The sealing type is suitable for the working environment of powder media, and is beneficial to ensuring the valve sealing requirement.
Claims (9)
1. An electronic vacuum stop valve of bellows, its characterized in that: the valve comprises a valve body (1), wherein the middle part of the valve body (1) is connected with a valve seat (5) and a lower box body (8), and a sealing gasket (4) is arranged in the middle; the lower box body (8) is used for positioning the screw shaft (6), a long round groove is formed in the lower box body (8), and a screw (20) on the valve clack (3) is clamped in the groove;
the motor speed reducer (9) is connected with the pinion (11) through a key (16), the large gear (18) is connected with the clutch (15) through a connecting plate (17), the clutch (15) is connected with the screw shaft (6) through the key (16), and a hand wheel (14) is arranged at the tail part of the screw shaft (6);
screw shaft (6) are connected with valve clack (3), and screw shaft (6) are located on valve body (1) through the bearing, and lower box (8) are connected with valve body (1), are connected with gear box (10) simultaneously, and pinion (11) and gear wheel (18) are arranged in gear box (10), and gear box (10) are connected with last box (12), and clutch (15) are arranged in last box (2), and lid (13) cover last box (12).
2. The bellows electric vacuum shut-off valve of claim 1, wherein: the middle part of the valve body 1 is connected with the valve seat (5) and the lower box body (8) by bolts.
3. The bellows electric vacuum shut-off valve of claim 1, wherein: the lower box body (8) plays a role in protecting a corrugated pipe assembly consisting of the valve clack (3), the valve seat (5) and the corrugated pipe (7).
4. The bellows electric vacuum shut-off valve of claim 1, wherein: when the screw shaft (6) rotates, the screw (20) on the valve clack (3) is clamped in the groove, and the valve clack (3) and the corrugated pipe (7) move up and down in a straight line, so that the valve clack (3) and the sealing ring (2) on the valve clack are separated from or tightly press the sealing surface on the valve body (1).
5. The bellows electric vacuum shut-off valve of claim 1, wherein: the motor speed reducer (9) drives the pinion (11), the pinion (11) is in meshed transmission with the large gear (18), the large gear (18) enables the clutch (15) to rotate through the connecting plate (17), so that the screw shaft (6) is driven to rotate, and when the screw shaft (6) rotates to the condition that the sealing ring (2) on the valve clack (3) is in contact with the sealing surface of the valve body (1), the valve is closed.
6. The bellows electric vacuum shut-off valve of claim 1, wherein: the screw shaft (6) is in threaded connection with the valve clack (3).
7. The bellows electric vacuum shut-off valve of claim 1, wherein: the lower box body (8) is connected with the valve body (1) through a screw.
8. The bellows electric vacuum shut-off valve of claim 1, wherein: the device also comprises a cover (13), and the cover (13) covers the upper box body (12).
9. The bellows electric vacuum shut-off valve of claim 1, wherein: the clutch (15) is in a power-on and suction type, namely when power is off, the upper part and the lower part of the clutch (15) are separated, and at the moment, the tail end hand wheel (14) of the screw shaft (6) is rotated, so that the upper half part of the clutch (15) rotates along with the screw shaft (6), and the lower half part of the connecting large gear (18) is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111400180.9A CN116146723A (en) | 2021-11-19 | 2021-11-19 | Electric vacuum stop valve for corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111400180.9A CN116146723A (en) | 2021-11-19 | 2021-11-19 | Electric vacuum stop valve for corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116146723A true CN116146723A (en) | 2023-05-23 |
Family
ID=86337697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111400180.9A Pending CN116146723A (en) | 2021-11-19 | 2021-11-19 | Electric vacuum stop valve for corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116146723A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570253A (en) * | 2024-01-15 | 2024-02-20 | 中国科学院沈阳科学仪器股份有限公司 | Needle valve driving assembly suitable for ultrahigh vacuum |
| CN117570253B (en) * | 2024-01-15 | 2024-04-19 | 中国科学院沈阳科学仪器股份有限公司 | Using method of needle valve driving assembly suitable for ultrahigh vacuum |
-
2021
- 2021-11-19 CN CN202111400180.9A patent/CN116146723A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570253A (en) * | 2024-01-15 | 2024-02-20 | 中国科学院沈阳科学仪器股份有限公司 | Needle valve driving assembly suitable for ultrahigh vacuum |
| CN117570253B (en) * | 2024-01-15 | 2024-04-19 | 中国科学院沈阳科学仪器股份有限公司 | Using method of needle valve driving assembly suitable for ultrahigh vacuum |
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