CN211117905U - Economical and practical hydraulic driving mechanism for plug valve - Google Patents
Economical and practical hydraulic driving mechanism for plug valve Download PDFInfo
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- CN211117905U CN211117905U CN201921886116.4U CN201921886116U CN211117905U CN 211117905 U CN211117905 U CN 211117905U CN 201921886116 U CN201921886116 U CN 201921886116U CN 211117905 U CN211117905 U CN 211117905U
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Abstract
The utility model provides an economical and practical's plug valve hydraulic drive mechanism comprises cylinder valve gap, hydraulic cylinder, piston, cylinder cap, pilot bar, clamp plate, oil pipe joint, valve rod, thrust bearing, lid flange and supporting sealing member, connector: the valve rod, two thrust bearings and a cover flange are arranged at the center and the lower end of the cylinder valve cover; rectangular spline holes are respectively sleeved on rectangular spline columns at two ends of a piston in the hydraulic cylinder barrel, at the insertion ends of a cylinder valve cover and a cylinder cover; the lower end of the piston is sleeved with a spiral spline column at the upper end of the valve rod by a spiral spline hole; the lower end of the indicating rod is fixed at the upper end of the piston by a pressure plate and a sunk screw; two ends of the hydraulic cylinder barrel are connected with the cylinder valve cover and the cylinder cover into a whole by a cylindrical head screw; the upper end of the indicating rod and the lower end of the valve rod respectively extend out of the upper end surface of the cylinder cover and the lower end surface of the cylinder valve cover and the cover flange. The automatic remote control device has compact structure, accuracy, reliability and low price, and is particularly suitable for the remote automatic control of the high-pressure and large-drift-diameter plug valve.
Description
Technical Field
The utility model relates to a hydraulic drive of high pressure, big latus rectum plug valve in oil machinery and valve trade.
Background
The high-pressure and large-diameter plug valve has large switch resistance, and when the plug valve is operated by manpower, the used crow bar is long, the action amplitude is large, and the operation is laborious; therefore, the hydraulic drive is carried out on the plug valve, so that the labor intensity of an operator can be reduced, the automation of equipment control can be realized, and the plug valve is suitable for the great trend of social development; in addition, the safety device can prevent personal safety accidents in toxic or pressure medium dangerous occasions. However, the existing high-pressure and large-drift-diameter plug valve is limited by factors such as cost price and the like, and is rarely driven by hydraulic pressure; secondly, the traditional driving mechanism for driving the rack and the gear or the rocker by the hydraulic cylinder has the problems of large volume, loose structure, poor bearing capacity, easy damage and the like; the spiral hydraulic swing oil cylinder which is produced and sold in the market at home and abroad can be used for driving the plug valve with high pressure and large drift diameter, but the structure is complex, the processing is difficult, the price is not good, and the price of the driving mechanism is even higher than that of the plug valve main body, so that the driving mechanism is unacceptable. Therefore, it is necessary to develop a hydraulic drive mechanism for a high-pressure, large-bore plug valve that is inexpensive and good.
Disclosure of Invention
The utility model discloses mainly to the structure complicacy that current "spiral hydraulic swing hydro-cylinder" exists, be difficult to processing, the problem of price on the high side, carry out the innovative design to a special hydraulic drive mechanism of economical and practical's plug valve is provided.
The utility model discloses constitute by jar valve gap, hydraulic cylinder, piston, cylinder cap, pilot lever, clamp plate, oil pipe joint, valve rod, thrust bearing, lid flange and supporting sealing member, connector, its unique part is: the valve rod, two thrust bearings and a cover flange are arranged at the center and the lower end of the cylinder valve cover; rectangular spline holes are respectively sleeved on rectangular spline columns at two ends of a piston in the hydraulic cylinder barrel, at the insertion ends of a cylinder valve cover and a cylinder cover; the lower end of the piston is sleeved with a spiral spline column at the upper end of the valve rod by a spiral spline hole; the lower end of the indicating rod is fixed at the upper end of the piston by a pressure plate and a sunk screw; two ends of the hydraulic cylinder barrel are connected with the cylinder valve cover and the cylinder cover into a whole by a cylindrical head screw; the upper end of the indicating rod and the lower end of the valve rod respectively extend out of the upper end surface of the cylinder cover and the lower end surface of the cylinder valve cover and the cover flange.
Because the utility model discloses unite two into one the lower cylinder cap of pneumatic cylinder and the valve gap of plug valve, install the sealing washer of valve rod, thrust bearing, lid flange and adapted in its centre bore to when having avoided using external "spiral hydraulic swing hydro-cylinder", the repeated configuration problem of thrust bearing, sealing washer, lower cylinder cap and valve gap has simplified the product structure, has reduced product volume, has reduced the cost price. Rectangular spline holes are adopted at the inner ends of the cylinder valve cover and the cylinder cover to be matched with rectangular spline columns at two ends of the piston to prevent rotation, and the cylinder valve cover is compact in structure and easy to process; the lower end of the piston directly drives the spiral spline post at the upper end of the valve rod to rotate by using the spiral spline hole, so that the repeated configuration of rotary parts is avoided when an external spiral hydraulic swing oil cylinder is used, and the reduction of the product volume and the cost price are facilitated; the spiral spline column at the upper end of the longer valve rod and the stroke of the piston can convert the thrust of most pistons into the rotating force of the valve rod; the fixed piston stroke and the valve rod helical angle can accurately control the plug valve to rotate 90 degrees for switching without other limiting parts; the rectangular splines and the spiral splines at the two ends of the piston are completely soaked in hydraulic oil, so that the piston can be fully lubricated, the friction resistance between parts is reduced, and the service life of the piston is prolonged. The upper end of the indicating rod extends out of the upper end surface of the cylinder cover, so that the opening and closing conditions of the valve can be displayed; the lower end of the valve rod extends out of the lower end faces of the cylinder valve cover and the cover flange and can transmit the driving force of the piston to the rotary plug in the valve body. Thereby the utility model has the characteristics of compact structure, processing are easy, accurate reliable, low price etc, be particularly suitable for the remote automatic control to high pressure, big latus rectum plug valve.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention in full section;
fig. 2 is a schematic top view of the cross section a-a of fig. 1 according to the present invention.
The names of the components indicated by the reference numerals in the drawings are as follows:
1. the hydraulic cylinder comprises a cylinder valve cover, 2, a hydraulic cylinder barrel, 3, a piston, 4, a cylinder cover, 5, a cylindrical head screw, 6, an indicating rod, 7, a small sealing ring, 8, a pressing plate, 9, a countersunk head screw, 10, an oil pipe joint, 11, a large sealing ring, 12, a valve rod, 13, a sealing ring, 14, a thrust bearing, 15, a copper gasket, 16 and a cover flange.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
in fig. 1 and 2: cylinder valve gap 1, hydraulic cylinder 2, piston 3, cylinder cap 4, pilot rod 6, clamp plate 8, oil pipe joint 10, valve rod 12, thrust bearing 14, lid flange 16 do the utility model discloses a main spare part, little sealing washer 7, big sealing washer 11, sealing washer 13 and copper gasket 15 are supporting sealing member, and cylindric head screw 5 and countersunk screw 9 are national standard's connector.
The cylinder valve cover 1 is a part with double functions of a hydraulic cylinder lower cylinder cover and a plug valve cover. Two circles of uniformly distributed through holes and a gasket ring groove are processed on the plane of the flange with the large diameter, the uniformly distributed through holes on the outer circle are bolt holes with the large diameter and are connected with a valve body of the plug valve; the through holes uniformly distributed on the inner ring are stepped holes for mounting cylindrical head screws 5 and are connected with the lower end of the hydraulic cylinder barrel 2; the gasket ring groove is provided with a downward opening and is used for sealing with the plug valve main body; and the flange can be provided with grease injection holes and other parts such as a grease injection valve and the like between the uniformly distributed through holes according to the specific requirements of the plug valve. The cylinder valve cover 1 is bounded by a large-diameter flange, a long hollow cylinder insertion end is arranged above the cylinder valve cover, and a short hollow cylinder protruding end is arranged below the cylinder valve cover; three grooves for mounting the large sealing ring 11 are cut on the surface of the cylinder at the upper insertion end; at the center of the insertion end, the upper end is a rectangular spline hole, and a cylindrical hole which has an increased diameter and can be used as a tool withdrawal groove is arranged below the rectangular spline hole and provides a moving space for the piston 3. A plurality of threaded blind holes are uniformly distributed on the end surface of the lower protruding end; a step through hole is arranged at the center of the protruding end and the large-diameter flange, and two sealing grooves are cut on the hole wall of the step hole with the smallest diameter so as to connect the valve rod 12, the sealing ring 13, the two thrust bearings 14, the copper gasket 15 and the cover flange 16 into a whole by using a cylindrical head screw 5.
The hydraulic cylinder barrel 2 is a hollow cylindrical part, and a plurality of thread blind holes which are externally connected are uniformly distributed on annular planes at two ends of the hydraulic cylinder barrel; two reducing through holes with threads at inlets are symmetrically distributed on the circumferential surface of the cylinder and are used for connecting the oil pipe joint 10.
A flange with a plurality of step holes is uniformly distributed above the cylinder cover 4, a round boss and a through hole are arranged at the center of the flange, and two grooves for mounting small sealing rings 7 are cut in the through hole; a long hollow cylinder insertion end is arranged below the flange, and three grooves for mounting large sealing rings 11 are cut on the surface of the cylinder at the insertion end; at the center of the insertion end, the lower end is a rectangular spline hole, and a cylindrical hole which has an increased diameter and can be used as a tool withdrawal groove is arranged above the rectangular spline hole and also used as a moving space of the piston 3.
The middle of the piston 3 is a flat cylinder with the thickest diameter, and two grooves for mounting large sealing rings 11 are cut on the circumference of the flat cylinder and are used for precisely contacting with the inner wall of the hydraulic cylinder barrel 2; the two ends of the flat cylinder are symmetrically distributed tool withdrawal grooves and rectangular spline columns, the length of each rectangular spline column must be ensured within the stroke range of the piston 3, and the spline columns at the two ends can be respectively connected with the rectangular spline holes at the insertion ends of the cylinder valve cover 1 and the cylinder cover 4. A step hole for fixing the indicating rod 6, the pressing plate 8 and the countersunk head screw 9 and small threaded blind holes which are uniformly distributed are processed at the center of the upper end of the piston 3; the center of the lower end of the piston 3 is provided with a spiral spline hole and a cylindrical hole which has an enlarged diameter and can be used as a tool withdrawal groove, and the spiral spline hole and the cylindrical hole are used for connecting a spiral spline column of the valve rod 12.
The valve rod 12 is a cylindrical part, a section of spiral spline column is arranged above the valve rod, and the length of a spline of the spiral spline column is required to ensure that a spiral spline hole at the lower end of the piston 3 is completely connected with the spiral spline column above the valve rod 12 when the piston 3 is in stroke top stop; a smooth cylinder is arranged below the spiral spline column, a raised waistcoat is arranged below the smooth cylinder, the smooth cylinder is also arranged below the waistcoat, and a full-length flat key is processed at the lower end of the smooth cylinder; the diameter of the cylinder and the spiral spline column above and below the waistcoat is the same, so that the thrust bearing 14 can be installed and sealed by the sealing ring 13 in the central hole of the cylinder valve cover 1 and the cover flange 16.
The indication rod 6, the pressure plate 8, the oil pipe joint 10, the thrust bearing 14 and the cover flange 16 are conventional parts with simple structures or universal parts and standard parts; the cover flange 16 therein serves to lift and seal the valve stem 12 and thrust bearing 14 and to take up the axial forces generated thereby.
The utility model discloses during the use, with sealed backing ring and big bolt in addition, through the equal cloth hole on 1 outer lane of jar valve gap and the backing ring groove below, install in the valve body top of plug valve, the key groove on the logical long parallel key of valve rod 12 lower extreme and the valve internal rotation links up mutually. Hydraulic oil is input into the hydraulic cylinder barrel 2 through the oil pipe joint 10, the piston 3 is driven to do reciprocating axial motion in the center holes of the insertion ends of the hydraulic cylinder barrel 2, the cylinder valve cover 1 and the cylinder cover 4, the lower end of the piston 3 drives the valve rod 12 to do reciprocating rotation at an angle of 90 degrees through the spiral spline, and the plug valve is driven to be opened and closed.
Claims (5)
1. The utility model provides an economical and practical's plug valve hydraulic drive mechanism comprises jar valve gap, hydraulic cylinder, piston, cylinder cap, pilot lever, clamp plate, oil pipe joint, valve rod, thrust bearing, lid flange and supporting sealing member, connector, characterized by: the valve rod, two thrust bearings and a cover flange are arranged at the center and the lower end of the cylinder valve cover; rectangular spline holes are respectively sleeved on rectangular spline columns at two ends of a piston in the hydraulic cylinder barrel, at the insertion ends of a cylinder valve cover and a cylinder cover; the lower end of the piston is sleeved with a spiral spline column at the upper end of the valve rod by a spiral spline hole; the lower end of the indicating rod is fixed at the upper end of the piston by a pressure plate and a sunk screw; two ends of the hydraulic cylinder barrel are connected with the cylinder valve cover and the cylinder cover into a whole by a cylindrical head screw; the upper end of the indicating rod and the lower end of the valve rod respectively extend out of the upper end surface of the cylinder cover and the lower end surface of the cylinder valve cover and the cover flange.
2. The hydraulic drive mechanism for a plug valve according to claim 1, wherein: the cylinder valve cover is bounded by a large-diameter flange, a long hollow cylinder insertion end is arranged above the cylinder valve cover, and a short hollow cylinder protruding end is arranged below the cylinder valve cover; three grooves for mounting large sealing rings are cut on the surface of the cylinder at the upper insertion end; the upper end of the insertion end is provided with a rectangular spline hole, and a cylindrical hole which has an increased diameter and can be used as a tool withdrawal groove is arranged below the rectangular spline hole; a plurality of threaded blind holes are uniformly distributed on the end surface of the lower protruding end; a step through hole is arranged at the center of the protruding end and the large-diameter flange, and two sealing grooves are cut on the wall of the step hole with the smallest diameter.
3. The hydraulic drive mechanism for a plug valve according to claim 1, wherein: a flange with a plurality of step holes is uniformly distributed above the cylinder cover, a round boss and a through hole are arranged at the center of the flange, and two grooves for mounting small sealing rings are cut in the through hole; a long hollow cylinder insertion end is arranged below the flange, and three grooves for mounting large sealing rings are cut on the surface of the cylinder at the insertion end; the rectangular spline hole is arranged at the lower end of the center of the insertion end, and the cylindrical hole which is enlarged in diameter and can be used as a tool withdrawal groove is arranged above the rectangular spline hole.
4. The hydraulic drive mechanism for a plug valve according to claim 1, wherein: the middle of the piston is a flat cylinder with the thickest diameter, and two grooves for mounting large sealing rings are cut on the circumference of the flat cylinder; two ends of the flat cylinder are symmetrically distributed tool withdrawal grooves and rectangular spline columns; a stepped hole for fixing the indicating rod, the pressing plate and the countersunk head screw and small threaded blind holes which are uniformly distributed are processed at the center of the upper end of the piston; the center of the lower end of the piston is provided with a spiral spline hole and a cylindrical hole which has an enlarged diameter and can be used as a tool withdrawal groove.
5. The hydraulic drive mechanism for a plug valve according to claim 1, wherein: the valve rod is a columnar part, a section of spiral spline column is arranged above the valve rod, a smooth cylinder is arranged below the spiral spline column, a raised waistcoat is arranged below the smooth cylinder, a smooth cylinder is also arranged below the waistcoat, and a full-length flat key is processed at the lower end of the smooth cylinder; the diameters of the cylinder above and below the waistcoat and the spiral spline column are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921886116.4U CN211117905U (en) | 2019-10-29 | 2019-10-29 | Economical and practical hydraulic driving mechanism for plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921886116.4U CN211117905U (en) | 2019-10-29 | 2019-10-29 | Economical and practical hydraulic driving mechanism for plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211117905U true CN211117905U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921886116.4U Active CN211117905U (en) | 2019-10-29 | 2019-10-29 | Economical and practical hydraulic driving mechanism for plug valve |
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| CN (1) | CN211117905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357219A (en) * | 2021-06-22 | 2021-09-07 | 华中科技大学 | Hydraulic swing cylinder mechanism for deep-sea manipulator |
-
2019
- 2019-10-29 CN CN201921886116.4U patent/CN211117905U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357219A (en) * | 2021-06-22 | 2021-09-07 | 华中科技大学 | Hydraulic swing cylinder mechanism for deep-sea manipulator |
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