CN212429942U - Stop valve - Google Patents
Stop valve Download PDFInfo
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- CN212429942U CN212429942U CN202021093735.0U CN202021093735U CN212429942U CN 212429942 U CN212429942 U CN 212429942U CN 202021093735 U CN202021093735 U CN 202021093735U CN 212429942 U CN212429942 U CN 212429942U
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- valve body
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Abstract
The utility model relates to a stop valve, which comprises a hollow valve body with an inlet and an outlet at the left end and the right end respectively, wherein the inner upper side of the valve body is provided with an upper baffle, the inner lower side of the valve body is provided with a lower baffle, the lower end of the upper baffle, which is far away from the inner wall of the valve body, and the upper end of the lower baffle, which is far away from the inner wall of the valve body, are positioned at the same horizontal plane, the top of the valve body is fixedly provided with a valve cover through bolts, the valve cover is provided with a valve rod in an up-and-down sliding way, the lower end of the valve rod penetrates into the inner part of the valve body and is connected with a valve clack for blocking, the lower side wall of the lower part of the valve rod is provided with a lower fixing plate, the inner top of the valve body is positioned, the utility model provides a stop valve that the leakproofness is strong, be difficult for revealing and conveniently open the regulation.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to stop valve.
Background
The stop valve, also called stop valve, belongs to the forced seal type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The connection mode is divided into three types: flange connection, screw thread connection and welding connection. After the self-sealing valve appears, the medium flow direction of the stop valve is changed to enter the valve cavity from the upper part of the valve clack, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced. At the same time, this type of valve is also relatively tight under the action of the medium. The existing stop valve has poor sealing performance, is easy to cause medium leakage and has potential safety hazard, and on the other hand, the required strength for opening the valve is large, difficult to adjust and low in practicability.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a stop valve that the leakproofness is strong, be difficult for revealing and conveniently open the regulation.
The technical scheme of the utility model is realized like this: the utility model provides a stop valve, both ends have import and export and inside hollow valve body respectively about including, the inside upside of valve body is equipped with the overhead gage, the inside downside of valve body is equipped with down the baffle, the lower extreme that the valve body inner wall was kept away from to the overhead gage and the upper end that the valve body inner wall was kept away from to lower baffle are located same horizontal plane, there is the valve gap at the valve body top through bolt fixed mounting, its characterized in that: the valve rod penetrates through the valve cover in a vertically sliding mode, the lower end of the valve rod penetrates into the valve body and is connected with a valve clack used for blocking and stopping, a lower fixing plate is arranged on the side wall of the lower portion of the valve rod and is positioned on the upper side of the valve clack, an upper fixing plate is arranged on the inner top of the valve body and is positioned below the valve cover, a connecting spring is arranged on the outer side wall of the valve rod and surrounds the valve rod along the length direction, the upper end and the lower end of the connecting spring are respectively connected with the lower surface of the upper fixing plate and the upper surface of the lower fixing plate, a control assembly used for supporting the control valve rod to slide downwards to block and stop is arranged on the top of the valve cover, the control assembly comprises a supporting barrel arranged on the top of the valve cover and a supporting plate arranged on the top of the, an annular groove is formed in the side wall of the valve rod and located above the lower fixing plate, a sealing sleeve is fixed in the annular groove, and the valve rod is in mutual contact with the valve cover and the upper fixing plate through the sealing sleeve to be extruded and slide.
By adopting the technical scheme, when in use, the forward rotating hand wheel is operated to drive the control screw to rotate forward, the control screw is inserted on the supporting plate through thread rotation, so as to lift downwards in the rotating process, the valve rod is propped against by the lower end, the valve rod is driven to slide downwards along the valve cover and the upper fixing plate, so that the lower end far away from the inner wall of the valve body and the upper end far away from the inner wall of the valve body by utilizing the valve clack and the upper baffle plate are used for plugging a stop flow channel, in the sliding process of the valve rod, the lower fixing plate follows the descending process, so as to stretch a connecting spring between the lower fixing plate and the upper fixing plate, in the sliding process, an annular groove is formed in the side wall of the valve rod and above the lower fixing plate, a sealing sleeve is fixed in the annular groove, the valve rod is in mutual contact with the sealing sleeve, when the control valve clack needs to be opened, the control valve clack is driven by the operation reverse rotation hand wheel to reversely rotate, the control screw rod ascends and descends upwards to stop propping against the valve rod, and under the return acting force of the connecting spring, the valve rod is driven to ascend, and relative sealing performance is ensured through the sealing sleeve in the ascending and descending process.
The utility model discloses further set up to: the valve comprises a valve rod, a valve cover and a sealing ring gasket, wherein the valve cover is arranged on the valve rod, the valve cover is arranged on the inner ring of the valve rod, the inner ring of the valve cover faces the valve rod, an annular fixing groove.
Through adopting above-mentioned technical scheme, in order to further improve the valve rod lift in-process and valve gap and the relative leakproofness between the upper fixed plate, the annular fixed slot has been seted up along circumference on the valve gap towards the inner circle of valve rod, be provided with the sealing ring circle pad that is used for cooperating the seal cover in annular fixed slot inside, the in-process of gliding on the valve rod, the valve rod passes through seal cover and valve gap inner wall, sealing ring circle pad in the annular fixed slot and the mutual contact extrusion slip of upper fixed plate inner wall, in order to guarantee the relative leakproofness between valve rod and valve gap and the upper fixed plate.
The utility model discloses further set up to: the valve rod is fixedly arranged on the upper surface of the valve cover, the valve rod is fixedly arranged in the supporting cylinder, the guide fixing pipe is arranged around the valve rod, the sealing pipe is fixedly arranged at the bottom of the inner wall of the guide fixing pipe, the sealing column is fixedly sleeved on the surface of the upper portion of the valve rod, and the sealing column is inserted into the guide fixing pipe and the sealing pipe.
By adopting the technical scheme, when in use, the hand wheel is operated to rotate in the positive direction to drive the control screw rod to rotate in the positive direction, the lower end of the control screw rod is propped against the valve rod to drive the valve rod to slide downwards along the valve cover and the upper fixing plate, thereby utilizing the valve clack to be matched with the lower end of the upper baffle plate far away from the inner wall of the valve body and the upper end of the lower baffle plate far away from the inner wall of the valve body to block the stop flow channel, in the sliding process of the valve rod, the lower fixed plate descends along with the valve rod, so that the connecting spring between the lower fixed plate and the upper fixed plate is stretched, and in the gliding process, the sealing column descends along the guide fixing tube and the sealing tube, finally, the bottom of the sealing column is propped against the upper surface of the valve cover and is matched with the sealing tube to form sealing, and the valve rod is contacted with the inner wall of the valve cover, the sealing ring gasket in the annular fixing groove and the inner wall of the upper fixing plate through the sealing sleeve to extrude and slide so as to further ensure the relative sealing performance among the valve rod, the valve cover and the upper fixing plate.
The utility model discloses further set up to: the diameter of the cross section of the sealing column is gradually increased from bottom to top to form an inverted frustum.
Through adopting above-mentioned technical scheme, in order to be further convenient for at the decline in-process, the air is discharged from the edge between sealed post bottom and the valve gap upper surface, sets up the cross section diameter of sealed post for from bottom to top crescent and is the back taper.
The utility model discloses further set up to: the improved valve rod is characterized in that a reinforcing plate in an L shape is fixedly mounted at the top of the supporting plate, an inner threaded hole is formed in the upper end of the reinforcing plate, and the lower end of the control screw rod is abutted to the upper end of the valve rod after sequentially rotating to penetrate through the inner threaded hole and the supporting plate.
Through adopting above-mentioned technical scheme, backup pad top fixed mounting has the reinforcing plate that is the L style of calligraphy, and interior screw hole has been seted up to the reinforcing plate upper end, the control screw rod lower extreme rotates in proper order and passes behind interior screw hole and the backup pad and the butt of valve rod upper end, and the structure that has increased reinforcing plate and interior screw hole is used for the control screw rod to carry out dual screw thread locking, avoids making because of the valve body internal pressure is too big to end the effect inefficacy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in figure 1, the utility model discloses a stop valve, which comprises a hollow valve body 1 with an inlet and an outlet at the left end and the right end respectively, wherein the inner upper side of the valve body 1 is provided with an upper baffle 2, the inner lower side of the valve body 1 is provided with a lower baffle 3, the lower end of the upper baffle 2 far away from the inner wall of the valve body 1 and the upper end of the lower baffle 3 far away from the inner wall of the valve body 1 are positioned at the same horizontal plane, the top of the valve body 1 is fixedly provided with a valve cover 4 through bolts, in the embodiment of the utility model, the valve cover 4 is provided with a valve rod 5 in an up-and-down sliding way, the lower end of the valve rod 5 penetrates into the valve body 1 and is connected with a stop valve clack 6 for plugging, the lower fixing plate 7 is arranged on the side wall at the lower part of the valve rod 5 and positioned at the upper side, the upper end and the lower end of the connecting spring 9 are respectively connected with the lower surface of the upper fixing plate 8 and the upper surface of the lower fixing plate 7, a control assembly used for propping against the control valve rod 5 to slide downwards to block and stop is arranged at the top of the valve cap 4, the control assembly comprises a supporting barrel 11 arranged at the top of the valve cap 4 and a supporting plate 12 covered at the top of the supporting barrel 11, a control screw 13 is inserted on the supporting plate 12 through thread rotation, the control screw 13 is coaxial with the valve rod 5, the upper end of the control screw 13 penetrates out of the supporting plate 12 and then is connected with a hand wheel 14, the lower end of the control screw 13 is abutted against the upper end of the valve rod 5, an annular groove 15 is formed in the side wall of the valve rod 5 and positioned above the lower fixing plate 7, a sealing sleeve 16 is fixed.
By adopting the technical scheme, when in use, the hand wheel 14 is operated to rotate in the forward direction to drive the control screw 13 to rotate in the forward direction, the control screw 13 is inserted on the supporting plate 12 through thread rotation, thereby lifting downwards in the rotating process, the valve rod 5 is propped against by the lower end, the valve rod 5 is driven to slide downwards along the valve cover 4 and the upper fixing plate 8, the valve clack 6 is utilized to be matched with the lower end of the upper baffle 2 far away from the inner wall of the valve body 1 and the upper end of the lower baffle 3 far away from the inner wall of the valve body 1 to seal the stop flow passage, the lower fixing plate 7 descends along with the descending of the valve rod 5, thereby stretching the connecting spring 9 between the lower fixing plate 7 and the upper fixing plate 8, in the descending process, the annular groove 15 is arranged on the side wall of the valve rod 5 and above the lower fixing plate 7, the sealing sleeve 16 is fixed in the annular groove 15, with the relative leakproofness of guaranteeing between valve rod 5 and valve gap 4 and the upper fixed plate 8, when needs open control valve clack 6, operation antiport hand wheel 14, drive control screw 13 antiport, control screw 13 goes up and down, stop to withstand valve rod 5, under coupling spring 9's answer effort, it rises to drive valve rod 5, and at the in-process that goes up and down, guarantee relative leakproofness through seal cover 16, for prior art, the inside leakproofness of stop valve has been improved greatly, has prevented to reveal, convenient operation opens the valve simultaneously, easily adjust, the utility model provides a strong, the difficult stop valve of revealing and conveniently opening the regulation of leakproofness.
In the embodiment of the present invention, the valve cover 4 has an annular fixing groove 17 formed along the circumferential direction toward the inner ring of the valve rod 5, and the annular fixing groove 17 is provided with a sealing ring gasket 18 for cooperating with the sealing sleeve 16.
Through adopting above-mentioned technical scheme, in order to further improve the relative leakproofness between valve rod 5 lift in-process and valve gap 4 and the upper fixed plate 8, annular fixed slot 17 has been seted up along circumference on the inner circle of valve gap 4 orientation valve rod 5, be provided with the sealing ring gasket 18 that is used for cooperating seal cover 16 in annular fixed slot 17 inside, in the process of gliding on valve rod 5, valve rod 5 passes through seal cover 16 and valve gap 4 inner wall, sealing ring gasket 18 and the 8 inner walls of upper fixed plate in annular fixed slot 17 contact extrusion slides each other, in order to guarantee the relative leakproofness between valve rod 5 and valve gap 4 and the upper fixed plate 8.
The utility model discloses in the embodiment, valve gap 4 upper surface just is located and is provided with the fixed pipe 19 of direction around valve rod 5 in the support section of thick bamboo 11, the bottom fixed mounting of the fixed pipe 19 inner wall of direction has sealed tube 20, the fixed sealing post 21 that has cup jointed in valve rod 5 upper portion surface, sealed post 21 pegs graft inside fixed pipe 19 of direction and sealed tube 20.
By adopting the technical scheme, when in use, the forward rotating hand wheel 14 is operated to drive the control screw 13 to rotate forward, the lower end of the control screw is propped against the valve rod 5 to drive the valve rod 5 to slide downwards along the valve cover 4 and the upper fixing plate 8, so that the valve clack 6 is matched with the lower end of the upper baffle plate 2 far away from the inner wall of the valve body 1 and the upper end of the lower baffle plate 3 far away from the inner wall of the valve body 1 to seal the stop flow channel, the lower fixing plate 7 descends along with the valve rod 5 in the gliding process to stretch the connecting spring 9 between the lower fixing plate 7 and the upper fixing plate 8, the sealing column 21 descends along the guide fixing pipe 19 and the sealing pipe 20 in the gliding process, finally, the bottom of the sealing column 21 is propped against the upper surface of the valve cover 4 to form sealing by being matched with the sealing pipe 20, and the valve rod 5 is mutually contacted with the inner wall of the valve, to further ensure the relative sealing between the valve rod 5 and the valve cover 4 and the upper fixing plate 8.
In the embodiment of the present invention, the diameter of the cross section of the sealing column 21 gradually increases from bottom to top to form an inverted frustum shape.
By adopting the technical scheme, in order to further facilitate the descending process, the air between the bottom of the sealing column 21 and the upper surface of the valve cover 4 is discharged from the edge, and the diameter of the cross section of the sealing column 21 is gradually increased from bottom to top and is in the shape of an inverted frustum.
In the embodiment of the present invention, a reinforcing plate 22 having an L-shape is fixedly mounted on the top of the supporting plate 12, an inner screw hole 23 is formed in the upper end of the reinforcing plate 22, and the lower end of the control screw 13 sequentially rotates to pass through the inner screw hole 23 and the supporting plate 12 and then abuts against the upper end of the valve rod 5.
Through adopting above-mentioned technical scheme, 12 top fixed mounting of backup pad has the reinforcing plate 22 that is the L style of calligraphy, and interior screw hole 23 has been seted up to reinforcing plate 22 upper end, control screw 13 lower extreme is rotatory in proper order to pass behind interior screw hole 23 and the backup pad 12 with valve rod 5 upper end butt, the structure that has increased reinforcing plate 22 and interior screw hole 23 is used for control screw 13 to carry out dual screw thread locking, avoids making because of the too big effect inefficacy that ends of valve body 1 internal pressure.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a stop valve, both ends have import and export and inside hollow valve body (1) respectively about including, the inside upside of valve body (1) is equipped with overhead gage (2), the inside downside of valve body (1) is equipped with down baffle (3), the lower extreme that valve body (1) inner wall was kept away from in overhead gage (2) and baffle (3) down keep away from the upper end of valve body (1) inner wall and be located same horizontal plane, there is valve gap (4), its characterized in that at valve body (1) top through bolt fixed mounting: the valve cover (4) is provided with a valve rod (5) in an up-and-down sliding and penetrating mode, the lower end of the valve rod (5) penetrates into the valve body (1) and is connected with a valve clack (6) used for plugging and stopping, a lower fixing plate (7) is arranged on the side wall of the lower portion of the valve rod (5) and located on the upper side of the valve clack (6), an upper fixing plate (8) is arranged at the inner top of the valve body (1) and located below the valve cover (4), a connecting spring (9) is arranged on the outer side wall of the lower portion of the valve rod (5) in a mode that the outer side wall of the valve rod (5) surrounds the valve rod (5) along the length direction, the upper end and the lower end of the connecting spring (9) are respectively connected with the lower surface of the upper fixing plate (8) and the upper surface of the lower fixing plate (7), a control assembly used for propping up and controlling, the improved valve rod fixing device is characterized in that a control screw rod (13) is inserted on the supporting plate (12) through thread rotation, the control screw rod (13) is coaxial with the valve rod (5), the upper end of the control screw rod (13) penetrates out of the supporting plate (12) and then is connected with a hand wheel (14), the lower end of the control screw rod (13) is abutted to the upper end of the valve rod (5), an annular groove (15) is formed in the side wall of the valve rod (5) and located above the lower fixing plate (7), a sealing sleeve (16) is fixed in the annular groove (15), and the valve rod (5) is in mutual contact with the valve cover (4) and the upper.
2. A shut-off valve as claimed in claim 1, wherein: the valve cover (4) is provided with an annular fixing groove (17) towards the inner ring of the valve rod (5) along the circumferential direction, and a sealing ring gasket (18) used for being matched with the sealing sleeve (16) is arranged inside the annular fixing groove (17).
3. A shut-off valve as claimed in claim 2, wherein: valve gap (4) upper surface just is arranged in supporting a section of thick bamboo (11) and is provided with direction fixed tube (19) around valve rod (5), the bottom fixed mounting of direction fixed tube (19) inner wall has sealed tube (20), valve rod (5) upper portion fixed surface has cup jointed sealed post (21), sealed post (21) are pegged graft inside direction fixed tube (19) and sealed tube (20).
4. A shut-off valve as claimed in claim 3, wherein: the diameter of the cross section of the sealing column (21) is gradually increased from bottom to top and is in an inverted frustum shape.
5. A stop valve as claimed in claim 1, 2 or 3, wherein: the improved valve rod is characterized in that a reinforcing plate (22) which is L-shaped is fixedly mounted at the top of the supporting plate (12), an inner threaded hole (23) is formed in the upper end of the reinforcing plate (22), and the lower end of the control screw rod (13) is sequentially rotated to penetrate through the inner threaded hole (23) and the supporting plate (12) and then is abutted to the upper end of the valve rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021093735.0U CN212429942U (en) | 2020-06-15 | 2020-06-15 | Stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021093735.0U CN212429942U (en) | 2020-06-15 | 2020-06-15 | Stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212429942U true CN212429942U (en) | 2021-01-29 |
Family
ID=74280133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021093735.0U Active CN212429942U (en) | 2020-06-15 | 2020-06-15 | Stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212429942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321400A (en) * | 2022-02-28 | 2022-04-12 | 杭州富尚阀门有限公司 | Stop valve for reducing operation resistance of valve handle |
| CN114635987A (en) * | 2022-03-15 | 2022-06-17 | 江苏江沅机械有限公司 | Automatic downward-pressing sealed stop valve |
-
2020
- 2020-06-15 CN CN202021093735.0U patent/CN212429942U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321400A (en) * | 2022-02-28 | 2022-04-12 | 杭州富尚阀门有限公司 | Stop valve for reducing operation resistance of valve handle |
| CN114321400B (en) * | 2022-02-28 | 2023-06-30 | 杭州富尚阀门有限公司 | Stop valve for reducing valve handle operation resistance |
| CN114635987A (en) * | 2022-03-15 | 2022-06-17 | 江苏江沅机械有限公司 | Automatic downward-pressing sealed stop valve |
| CN114635987B (en) * | 2022-03-15 | 2022-12-13 | 江苏江沅机械有限公司 | Automatic downward-pressing sealed stop valve |
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