CN220749228U

CN220749228U - Stop valve that shock resistance is good

Info

Publication number: CN220749228U
Application number: CN202322514338.6U
Authority: CN
Inventors: 杨柳
Original assignee: SICHUAN KAITZ VALVE Manufacturing CO LTD
Current assignee: SICHUAN KAITZ VALVE Manufacturing CO LTD
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-04-09
Anticipated expiration: 2033-09-15

Abstract

The utility model discloses a stop valve with good shock resistance, which belongs to the technical field of stop valve equipment and comprises a valve body, wherein a valve rod is movably arranged in the valve body, a valve plate is fixedly arranged on the outer side surface of the valve rod and positioned on the inner side of the valve body, a pre-buffering mechanism is arranged on the inner side of the valve body, shock resistance mechanisms are fixedly arranged on the outer walls of two sides of the valve plate, and each shock resistance mechanism comprises a fixed plate, a fixed seat, a rotating rod, a buffering plate, an arc-shaped buffering block and a telescopic spring. The valve has the beneficial effects that the impact-resistant mechanism is arranged, when liquid flows to the valve plate, the impact-resistant mechanism is preferentially contacted with the arc-shaped buffer block, the buffer plate moves under the action of impact force, so that the rotating rod rotates by a certain angle, and under the action of the torsion spring and the telescopic spring, the displacement of the buffer plate is buffered and decelerated, so that the valve plate is not in direct contact with the fluid, and the impact resistance of the valve is improved.

Description

Stop valve that shock resistance is good

Technical Field

The utility model relates to the technical field of stop valve equipment, in particular to a stop valve with good shock resistance.

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so that when the valve is closed, pressure must be applied to the valve clack so as to force the sealing surface not to leak. When a medium enters the valve from the lower part of the valve clack, the resistance which needs to be overcome by the operation force is the friction force of the valve rod and the filler and the thrust generated by the pressure of the medium, and the force for closing the valve is larger than the force for opening the valve, so that the diameter of the valve rod is larger, otherwise, the valve rod is in a bending fault. 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 from the upper part of the valve clack to the valve cavity, 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, under the action of the medium, the valve in the form is also tighter. The valve 'three types' in China stipulates that the flow direction of the stop valve is uniformly from top to bottom. When the stop valve is opened, the opening height of the valve clack is 25-30% of the nominal diameter, and the flow rate is maximum, which means that the valve has reached the full-open position. The fully open position of the shut-off valve is determined by the stroke of the valve flap.

The stop valve in the prior art has the following defects that when liquid is conveyed, the stop valve is only provided with a valve plate and a sealing ring, the impact resistance of the stop valve is poor, after the stop valve is used for many times, the valve plate is easy to crack or gap, the stop valve cannot be used normally, the circulation of the liquid is easy to be uncontrollable, and the economic loss is caused.

Disclosure of Invention

To solve the problems set forth in the background art. The utility model provides a stop valve with good shock resistance, which is provided with a shock resistance mechanism and is used for solving the problems that when liquid is conveyed, the stop valve is only provided with a valve plate and a sealing ring, the shock resistance is poor, after multiple use, the valve plate is easy to crack or gap, the stop valve cannot be normally used, the circulation of the liquid is easy to be uncontrollable, and further economic loss is caused.

The technical scheme of the utility model is as follows: the stop valve with good shock resistance comprises a valve body, wherein a valve rod is movably arranged in the valve body, a valve plate is fixedly arranged on the outer side surface of the valve rod and positioned on the inner side of the valve body, a pre-buffering mechanism is arranged on the inner side of the valve body, and shock resistance mechanisms are fixedly arranged on the outer walls of the two sides of the valve plate;

the anti-impact mechanism comprises a fixing plate, a fixing seat, a rotating rod, a buffer plate, an arc buffer block and a telescopic spring, wherein the fixing plate is fixedly arranged on one side outer wall of a valve plate, the fixing seat is provided with two groups, one group of fixing seat is fixedly arranged on one side outer wall of the fixing plate, the other group of fixing seat is fixedly arranged on one side outer wall of the buffer plate, the arc buffer block is fixedly arranged on one side outer wall of the buffer plate, a short shaft swing joint is arranged between the rotating rod and the fixing seat, the two groups of rotating rods are movably connected through a connecting shaft, and a torsion spring is arranged at the joint of the rotating rod and the connecting shaft.

Furthermore, the outside surface of valve body fixedly cup joints the collar, be equipped with the sealing washer between valve plate and the inside wall of valve body.

Further, the sealing ring is fixedly sleeved on the outer side surface of the valve rod and the joint of the outer side surface of the valve body, and the sealing bearing is fixedly sleeved on the bottom end of the valve rod and the joint of the valve body.

Further, a connecting rod is fixedly arranged on the outer surface of the top end of the valve rod, and a rotating ring is fixedly arranged at the other end of the connecting rod.

Further, the pre-buffering mechanism comprises a buffering rod, damping springs, an annular plate, a rotating shaft, a rotating plate and a mounting plate, wherein the inner side wall of the valve body is provided with a groove, the damping springs are fixedly mounted on the inner side wall of the groove, the other ends of the damping springs are fixedly connected with the buffering rod, and the damping springs and the annular plate are fixedly sleeved on the outer side surface of the buffering rod.

Further, the outside surface of annular plate and mounting panel fixed connection, the pivot activity is pegged graft at the inside surface of annular plate, the fixed outside surface at the pivot that cup joints of rotating plate.

Further, one end of the telescopic spring is fixedly connected with the buffer plate, and the other end of the telescopic spring is fixedly connected with the fixing plate.

The utility model provides a stop valve with good shock resistance through improvement, and compared with the prior art, the stop valve has the following improvement and advantages:

through being equipped with impact mechanism, during the use, when liquid flows to stop valve department, it is preferential through pre-buffer mechanism, during the process, its liquid and rotating plate contact, and then to the operation of slowing down in advance of liquid, the mounting panel can follow the removal of annular plate and displacement simultaneously, and then under buffer spring and damping's effect, carry out shock attenuation down-conversion operation to mounting panel and annular plate, make the flow rate of liquid slow down, its impact force reduces, when liquid flows to the valve plate position, it is preferential and arc buffer block contact, under impact force, the buffer plate removes, and then make the dwang rotate certain angle, and under torsion spring and extension spring's effect, carry out the buffering speed reduction to the displacement of buffer plate, make valve plate and fluid direct contact, and then improve the shock resistance of valve, make the life of valve longer, be difficult for appearing gap or crack, be favorable to better control liquid's circulation.

Drawings

The utility model is further explained below with reference to the drawings and examples:

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 a schematic side view of a rotating plate of the present utility model;

FIG. 4 is a schematic front view of the present utility model;

FIG. 5 is an enlarged schematic view of the impact mechanism of the present utility model;

reference numerals illustrate: 1. a valve body; 2. a mounting ring; 3. a groove; 4. sealing the bearing; 5. a valve stem; 6. a connecting rod; 7. a rotating ring; 8. a seal ring; 9. a seal ring; 10. a rotating lever; 11. a mounting plate; 12. damping is carried out; 13. an annular plate; 14. a rotating shaft; 15. a rotating plate; 16. a buffer spring; 17. a buffer rod; 18. a valve plate; 19. a fixing plate; 20. a telescopic spring; 21. an arc-shaped buffer block; 22. a buffer plate; 23. a fixing seat.

Detailed Description

The following detailed description of the present utility model will provide clear and complete description of the technical solutions of the embodiments of the present utility model, with reference to fig. 1 to 4, and it is obvious that the described embodiments 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.

The utility model provides a stop valve with good shock resistance through improvement, as shown in figures 1-4, the stop valve comprises a valve body 1, a valve rod 5 is movably arranged in the valve body 1, the outer side surface of the valve rod 5 is fixedly provided with a valve plate 18 positioned on the inner side of the valve body 1, the outer side surface of the valve body 1 is fixedly sleeved with a mounting ring 2, the mounting ring 2 is fixedly arranged at a proper position when in use, a flange plate can be adopted for replacement, a sealing ring 9 is arranged between the valve plate 18 and the inner side wall of the valve body 1, a pre-buffering mechanism is arranged on the inner side of the valve body 1, shock resistance mechanisms are fixedly arranged on the outer walls of the two sides of the valve plate 18, a sealing ring 8 is fixedly sleeved on the outer side surface of the valve rod 5 and the connecting part with the outer side surface of the valve body 1, and a sealing bearing 4 is fixedly sleeved on the connecting part of the bottom end of the valve rod 5 and the valve body 1, thereby being beneficial to improving the sealing performance of the valve and further preventing liquid from leaking;

the shock resistance mechanism comprises a fixing plate 19, a fixing seat 23, a rotating rod 10, a buffer plate 22, an arc buffer block 21 and a telescopic spring 20, wherein the fixing plate 19 is fixedly installed on one side outer wall of a valve plate 18, the fixing seat 23 is provided with two groups, one group of fixing seats 23 is fixedly installed on one side outer wall of the fixing plate 19, the other group of fixing seats 23 is fixedly installed on one side outer wall of the buffer plate 22, the arc buffer block 21 is fixedly installed on one side outer wall of the buffer plate 22, a short shaft movable connection is arranged between the rotating rod 10 and the fixing seat 23, a connecting shaft movable connection is adopted between the two groups of rotating rods 10, a torsion spring is arranged at the joint of the rotating rod 10 and the connecting shaft, a connecting rod 6 is fixedly installed on the outer surface of the top end of the valve rod 5, the other end of the connecting rod 6 is fixedly installed with a rotating ring 7, one end of the telescopic spring 20 is fixedly connected with the buffer plate 22, the other end of the telescopic spring 20 is fixedly connected with the fixing plate 19, when liquid flows to the valve plate 18, the buffer plate 22 is preferentially contacted with the arc buffer block 21, the buffer plate 22 moves under the action of the impact force, the rotating rod 10 rotates by a certain angle, and displacement of the buffer plate 22 is easily carried out under the action of the torsion spring and the action of the telescopic spring 20, the buffer plate 22 is not in contact with the valve plate, the service life of the valve is more easily prolonged, and the crack resistance performance is better, or the service life of the valve is more prolonged, and the fluid is more bad, and the flow resistance performance is more in the situation is better, and the crack is more than the control.

The pre-buffering mechanism comprises a buffering rod 17, a damping 12, a buffering spring 16, an annular plate 13, a rotating shaft 14, a rotating plate 15 and a mounting plate 11, wherein the inner side wall of the valve body 1 is provided with a groove 3, the damping 12 is fixedly installed on the inner side wall of the groove 3, the other end of the damping 12 is fixedly connected with the buffering rod 17, the buffering spring 16 and the annular plate 13 are fixedly sleeved on the outer side surface of the buffering rod 17, the outer side surface of the annular plate 13 is fixedly connected with the mounting plate 11, the rotating shaft 14 is movably inserted on the inner side surface of the annular plate 13, the rotating plate 15 is fixedly sleeved on the outer side surface of the rotating shaft 14, when in use, when liquid flows to the stop valve, the liquid preferentially passes through the pre-buffering mechanism, when the liquid contacts with the rotating plate 15, then pre-decelerating operation is carried out on the liquid, meanwhile, the mounting plate 11 moves along with the movement of the annular plate 13, and then under the action of the damping spring 16 and the damping 12, the damping and the annular plate 13 are subjected to damping down operation, so that the flow rate of the liquid is slowed down, and the impact force of the liquid is reduced.

Standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional modes in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that details are not described in detail in the specification, and the utility model belongs to the prior art known to the person skilled in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a stop valve that shock resistance is good, includes valve body (1), its characterized in that: the valve is characterized in that a valve rod (5) is movably arranged in the valve body (1), a valve plate (18) is fixedly arranged on the outer side surface of the valve rod (5) and positioned on the inner side of the valve body (1), a pre-buffering mechanism is arranged on the inner side of the valve body (1), and impact resistant mechanisms are fixedly arranged on the outer walls of the two sides of the valve plate (18);

the anti-impact mechanism comprises a fixing plate (19), a fixing seat (23), a rotating rod (10), a buffer plate (22), an arc buffer block (21) and a telescopic spring (20), wherein the fixing plate (19) is fixedly installed on one side outer wall of a valve plate (18), the fixing seat (23) is provided with two groups, one group of fixing seats (23) is fixedly installed on one side outer wall of the fixing plate (19), the other group of fixing seats (23) is fixedly installed on one side outer wall of the buffer plate (22), the arc buffer block (21) is fixedly installed on one side outer wall of the buffer plate (22), a short shaft is movably connected between the rotating rod (10) and the fixing seat (23), the two groups of rotating rod (10) are movably connected through a connecting shaft, and a torsion spring is arranged at the joint of the rotating rod (10) and the connecting shaft.

2. The shock resistant shutoff valve of claim 1, wherein: the valve is characterized in that a mounting ring (2) is fixedly sleeved on the outer side surface of the valve body (1), and a sealing ring (9) is arranged between the valve plate (18) and the inner side wall of the valve body (1).

3. The shock resistant shutoff valve of claim 1, wherein: the sealing ring (8) is fixedly sleeved on the outer side surface of the valve rod (5) and the joint of the valve rod (5) and the outer side surface of the valve body (1), and the sealing bearing (4) is fixedly sleeved on the bottom end of the valve rod (5) and the joint of the valve rod and the valve body (1).

4. The shock resistant shutoff valve of claim 1, wherein: the connecting rod (6) is fixedly arranged on the outer surface of the top end of the valve rod (5), and the rotating ring (7) is fixedly arranged at the other end of the connecting rod (6).

5. The shock resistant shutoff valve of claim 1, wherein: the pre-buffering mechanism comprises a buffering rod (17), a damping spring (12), a buffering spring (16), an annular plate (13), a rotating shaft (14), a rotating plate (15) and a mounting plate (11), wherein the inner side wall of the valve body (1) is provided with a groove (3), the damping spring (12) is fixedly mounted on the inner side wall of the groove (3), the other end of the damping spring (12) is fixedly connected with the buffering rod (17), and the buffering spring (16) and the annular plate (13) are fixedly sleeved on the outer side surface of the buffering rod (17).

6. The high impact shutoff valve of claim 5, wherein: the outer side surface of the annular plate (13) is fixedly connected with the mounting plate (11), the rotating shaft (14) is movably inserted into the inner side surface of the annular plate (13), and the rotating plate (15) is fixedly sleeved on the outer side surface of the rotating shaft (14).

7. The shock resistant shutoff valve of claim 1, wherein: one end of the telescopic spring (20) is fixedly connected with the buffer plate (22), and the other end of the telescopic spring (20) is fixedly connected with the fixing plate (19).