CN219796142U - Stop valve case with reflux groove structure - Google Patents
Stop valve case with reflux groove structure Download PDFInfo
- Publication number
- CN219796142U CN219796142U CN202320617183.6U CN202320617183U CN219796142U CN 219796142 U CN219796142 U CN 219796142U CN 202320617183 U CN202320617183 U CN 202320617183U CN 219796142 U CN219796142 U CN 219796142U
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- CN
- China
- Prior art keywords
- piston head
- sealing cover
- stop valve
- valve
- sealing
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- 238000010992 reflux Methods 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 230000000694 effects Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 22
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a valve core of a stop valve with a reflux groove structure, which comprises a sealing cover; the middle part of the top wall of the sealing cover is rotationally connected with a threaded cylinder through a sealing bearing, the lower end of the threaded cylinder is in threaded connection with a stud, the lower end of the stud is provided with a connecting seat, the lower surface of the connecting seat is fixedly connected with a piston head through uniformly distributed telescopic posts I, an inner cavity is formed in the piston head, a reflux groove is formed in the outer cambered surface of the piston head, a reflux outlet is formed in the lower surface of the piston head, and the reflux outlet and the reflux groove are both communicated with the inner cavity. The utility model regulates and controls the ratio of the pressure and the pressure area between the liquid inlet pipe and the liquid outlet pipe in the stop valve by arranging the reflux groove, thereby improving the liquid circulation speed in the stop valve, and simultaneously, the device can apply elastic pressure to the valve clack through the piston head, thereby facilitating the valve clack to be closed.
Description
Technical Field
The utility model relates to the technical field of stop valves, in particular to a stop valve core with a reflux groove structure.
Background
The stop valve is also called a stop valve, and belongs to a forced sealing type valve, so that when the valve is closed, pressure is applied to a valve clack to force a sealing surface not to leak, the stop valve is mostly in low-inlet and high-outlet mode, when a part of stop valve cores are used, the stop valve cores are fixed with a stop valve body through flange connection, screw connection or welding connection, and the lower ends of the stop valve cores squeeze the valve clacks in the stop valve body through piston heads, so that the stop valve is closed.
When the stop valve is opened, the screw rod is driven to rotate through the hand wheel, the screw rod is in threaded connection with the valve body of the stop valve, so that the piston head at the lower end of the screw rod is driven to vertically move upwards to relieve the closing pressure applied to the valve clack, liquid of the valve clack resetting stop valve flows out through the liquid outlet pipe through the liquid inlet pipe and the valve clack clearance, when the valve clack is reset to the maximum degree, the liquid pressure difference between the liquid inlet pipe and the liquid outlet pipe in the stop valve is always constant, the fluid flow speed is always constant, meanwhile, the internal threaded part of the stop valve is easy to generate extrusion deformation after the valve core is closed for a long time, so that the pressure applied to the valve clack by the piston head is loosened, and the tightness of the valve core closing part of the device is reduced. For this purpose, a shut-off valve insert having a return channel structure is proposed.
Disclosure of Invention
The utility model aims to overcome the existing defects, and provides a valve core of a stop valve with a reflux groove structure, the device regulates and controls the ratio of the pressure between a liquid inlet pipe and a liquid outlet pipe in the stop valve and the ratio of the pressure area by arranging the reflux groove, so that the liquid circulation speed in the stop valve is improved, and meanwhile, the device can apply elastic pressure to a valve clack through a piston head, the valve clack is convenient to close, and the problems in the background art can be effectively solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a valve core of a stop valve with a reflux groove structure comprises a sealing cover;
the middle part of the top wall of the sealing cover is rotationally connected with a threaded cylinder through a sealing bearing, the lower end of the threaded cylinder is in threaded connection with a stud, the lower end of the stud is provided with a connecting seat, the lower surface of the connecting seat is fixedly connected with a piston head through uniformly distributed telescopic posts I, an inner cavity is formed in the piston head, a reflux groove is formed in the outer cambered surface of the piston head, a reflux outlet is formed in the lower surface of the piston head, and the reflux outlet and the reflux groove are both communicated with the inner cavity.
Further, the inside of inner chamber is through telescopic link two and spring two fixedly connected with spacing piece, and spring two cup joints with the outer end activity of telescopic link two, and the right side of spacing piece is installed through sealing piece and reflux slot cooperation, and the lateral surface of piston head is equipped with the reposition of redundant personnel seat, and reposition of redundant personnel seat and reflux slot cooperation are installed, carry out the backward flow to the device and are closed.
Further, a first spring which is uniformly distributed is arranged between the connecting seat and the piston head, and the first spring is movably sleeved with the outer end of the adjacent first telescopic column to elastically squeeze the valve clack of the stop valve.
Further, the middle part of the top wall of the sealing cover is provided with an annular seat, the inside of the annular seat is rotationally connected with the outer side of the threaded cylinder, the lower surface of the annular seat is fixedly connected with the upper surface of the connecting seat through telescopic rods which are transversely and symmetrically distributed, and the piston head is prevented from rotating when moving vertically.
Further, logical groove has been seted up on the upper surface right side of sealed lid, and the bottom of logical groove is equipped with the spacing ring, and the upper end of logical groove is equipped with the dome, and evenly distributed's gas vent hole has been seted up to the upper surface of dome, and the lower surface of dome is through flexible post three and three fixedly connected with pressure release stopper of spring, and the outer end activity of spring three and flexible post cup joints, and pressure release stopper and spacing ring peg graft, carry out the pressure release to the stop valve.
Further, sealing rings are arranged on the lower surfaces of the pressure relief plug and the piston head and the top wall of the sealing cover, so that the device and the stop valve body are sealed.
Further, the upper end of the thread cylinder is provided with a connecting shaft, and the upper end of the connecting shaft is provided with a hand wheel, so that torsion can be conveniently applied to the device.
Compared with the prior art, the utility model has the beneficial effects that: the device can apply elastic pressure to the valve clack through the piston head, and the valve clack is convenient to close.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
fig. 3 is an enlarged schematic view of the structure of the present utility model at a.
In the figure: the sealing device comprises a sealing cover 1, a threaded cylinder 2, a stud 3, a telescopic rod 4, a connecting seat 5, a telescopic column 6, a spring 7, a piston head 8, a reflux groove 9, a sealing ring 10, an inner cavity 11, a telescopic column 12, a spring 13, a reflux outlet 14, a limiting plate 15, a sealing plate 16, a round cover 17, a telescopic column 18, a spring 19, a pressure release plug 20, a limiting ring 21, an annular seat 22, a connecting shaft 23, a hand wheel 24 and a shunt seat 25.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the present embodiment provides a technical solution: a valve core of a stop valve with a reflux groove structure comprises a sealing cover 1;
wherein: the middle part of the top wall of the sealing cover 1 is rotationally connected with a threaded cylinder 2 through a sealing bearing, the lower end of the threaded cylinder 2 is in threaded connection with a stud 3, the lower end of the stud 3 is provided with a connecting seat 5, the lower surface of the connecting seat 5 is fixedly connected with a piston head 8 through uniformly distributed telescopic columns I6, an inner cavity 11 is formed in the piston head 8, a reflux groove 9 is formed in the outer cambered surface of the piston head 8, a reflux outlet 14 is formed in the lower surface of the piston head 8, and both the reflux outlet 14 and the reflux groove 9 are communicated with the inner cavity 11.
In the specific embodiment, a limiting piece 15 is fixedly connected to the inner portion of the inner cavity 11 through a second telescopic rod 12 and a second spring 13, the second spring 13 is movably sleeved with the outer end of the second telescopic rod 12, the right side of the limiting piece 15 is matched with the reflux groove 9 through a sealing piece 16, a shunt seat 25 is arranged on the outer side face of the piston head 8, the shunt seat 25 is matched with the reflux groove 9, a first spring 7 which is uniformly distributed is arranged between the connecting seat 5 and the piston head 8, and the first spring 7 is movably sleeved with the outer end of the adjacent first telescopic column 6.
In a specific embodiment, an annular seat 22 is arranged in the middle of the top wall of the sealing cover 1, the inside of the annular seat 22 is rotationally connected with the outer side of the threaded cylinder 2, the lower surface of the annular seat 22 is fixedly connected with the upper surface of the connecting seat 5 through telescopic rods 4 which are transversely and symmetrically distributed, a connecting shaft 23 is arranged at the upper end of the threaded cylinder 2, and a hand wheel 24 is arranged at the upper end of the connecting shaft 23.
In a specific embodiment, a through groove is formed in the right side of the upper surface of the sealing cover 1, a limiting ring 21 is arranged at the bottom of the through groove, a round cover 17 is arranged at the upper end of the through groove, uniformly distributed air leakage holes are formed in the upper surface of the round cover 17, a pressure release plug 20 is fixedly connected to the lower surface of the round cover 17 through a telescopic column III 18 and a spring III 19, the spring III 19 is movably sleeved with the outer end of the telescopic column III 18, the pressure release plug 20 is connected with the limiting ring 21 in an inserting mode, and sealing rings 10 are arranged on the lower surfaces of the pressure release plug 20 and the piston head 8 and the top wall of the sealing cover 1.
The working principle of the utility model is as follows:
when the valve core of the stop valve is used for regulating and controlling the flow rate of the valve body of the stop valve, the valve core of the stop valve is firstly fixed with an upper end opening of the valve body of the stop valve through a sealing cover 1 in threaded connection, and at the moment, a piston head 8 vertically extrudes and limits a valve clack in the stop valve;
when liquid in the stop valve circulates, the hand wheel 24 is rotated, the hand wheel 24 drives the threaded cylinder 2 to rotate through the connecting shaft 23, the threaded cylinder 2 drives the connecting seat 5 to move vertically upwards through threaded connection, at the moment, the telescopic end of the telescopic rod 4 moves vertically in a self-adaptive mode, so that autorotation is avoided when the stud 3 moves vertically, the connecting seat 5 drives the piston head 8 to move vertically upwards through the telescopic rod I6, the pressure applied to the valve clack in the vertical moving process of the piston head 8 is reduced, the valve clack resets, liquid at the bottom in the stop valve flows out through the liquid outlet pipe at the upper end of the valve body through a gap between the valve clack and the valve body and is discharged, part of liquid after liquid is flushed out is split to the split seat 25, part of liquid enters the reflux groove 9 through the inner cambered surface of the split seat 25 so as to apply pressure to the limiting piece 15, the telescopic end of the telescopic rod II 12 and the spring II shrink simultaneously, the split liquid enters the inner cavity 11 and is discharged through the reflux outlet 14, and the ratio of the pressure and the pressure area of the liquid inlet pipe and the liquid outlet of the stop valve are increased in the stop valve are increased, and the liquid circulation speed inside the stop valve is further improved;
when the stop valve is closed and locked, the rotary disc hand wheel 24 is rotated, the stud 3 indirectly drives the piston head 8 to vertically move downwards to apply pressure to the valve clack through the same principle, the hand wheel 24 is continuously rotated after the valve clack is closed, the telescopic end of the telescopic column I6 and the spring I7 are simultaneously contracted, the piston head 8 further applies elastic downward pressure to the valve clack through spring force, the closing extrusion effect of the valve clack is good, when the internal pressure of the valve body is overlarge, the telescopic end of the telescopic column III 18 and the spring III 19 are elastically contracted, the closing relation between the pressure release plug 20 and the limiting ring 21 is released, the air pressure in the valve body of the stop valve is discharged through the air release hole, the air pressure in the stop valve is prevented from being overhigh, and the sealing ring 10 and the sealing piece 16 are used for sealing gaps in the device, so that the tightness of the device is improved.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (7)
1. A stop valve case with reflux slot structure, its characterized in that: comprises a sealing cover (1);
the sealing cover is characterized in that a threaded cylinder (2) is rotationally connected to the middle of the top wall of the sealing cover (1) through a sealing bearing, a stud (3) is connected to the lower end of the threaded cylinder (2) in a threaded manner, a connecting seat (5) is arranged at the lower end of the stud (3), a piston head (8) is fixedly connected to the lower surface of the connecting seat (5) through uniformly distributed telescopic columns I (6), an inner cavity (11) is formed in the piston head (8), a backflow groove (9) is formed in the outer cambered surface of the piston head (8), a backflow outlet (14) is formed in the lower surface of the piston head (8), and both the backflow outlet (14) and the backflow groove (9) are communicated with the inner cavity (11).
2. A shut-off valve spool having a return channel structure according to claim 1, characterized in that: the inside of inner chamber (11) is through telescopic link two (12) and spring two (13) fixedly connected with spacing piece (15), and the outer end activity of spring two (13) and telescopic link two (12) cup joints, and the right side of spacing piece (15) is installed through sealing piece (16) and reflux slot (9) cooperation, and the lateral surface of piston head (8) is equipped with reposition of redundant personnel seat (25), and reposition of redundant personnel seat (25) are installed with reflux slot (9) cooperation.
3. A shut-off valve spool having a return channel structure according to claim 1, characterized in that: a first spring (7) which is uniformly distributed is arranged between the connecting seat (5) and the piston head (8), and the first springs (7) are movably sleeved with the outer ends of the adjacent first telescopic columns (6).
4. A shut-off valve spool having a return channel structure according to claim 1, characterized in that: the middle part of the top wall of the sealing cover (1) is provided with an annular seat (22), the inside of the annular seat (22) is rotationally connected with the outer side of the threaded cylinder (2), and the lower surface of the annular seat (22) is fixedly connected with the upper surface of the connecting seat (5) through telescopic rods (4) which are transversely and symmetrically distributed.
5. A shut-off valve spool having a return channel structure according to claim 1, characterized in that: the sealing cover is characterized in that a through groove is formed in the right side of the upper surface of the sealing cover (1), a limiting ring (21) is arranged at the bottom of the through groove, a round cover (17) is arranged at the upper end of the through groove, uniformly distributed air leakage holes are formed in the upper surface of the round cover (17), a pressure release plug (20) is fixedly connected to the lower surface of the round cover (17) through a telescopic column III (18) and a spring III (19), the spring III (19) is movably sleeved with the outer end of the telescopic column III (18), and the pressure release plug (20) is spliced with the limiting ring (21).
6. A shut-off valve spool having a return channel structure according to claim 5, characterized in that: the pressure release plug (20) and the lower surface of the piston head (8) and the top wall of the sealing cover (1) are respectively provided with a sealing ring (10).
7. A shut-off valve spool having a return channel structure according to claim 1, characterized in that: the upper end of the thread cylinder (2) is provided with a connecting shaft (23), and the upper end of the connecting shaft (23) is provided with a hand wheel (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320617183.6U CN219796142U (en) | 2023-03-27 | 2023-03-27 | Stop valve case with reflux groove structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320617183.6U CN219796142U (en) | 2023-03-27 | 2023-03-27 | Stop valve case with reflux groove structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219796142U true CN219796142U (en) | 2023-10-03 |
Family
ID=88178992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320617183.6U Active CN219796142U (en) | 2023-03-27 | 2023-03-27 | Stop valve case with reflux groove structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219796142U (en) |
-
2023
- 2023-03-27 CN CN202320617183.6U patent/CN219796142U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |