阅读说明：本技术 一种防水锤球阀 (Water hammer-proof ball valve ) 是由 张立国 陈玉会 徐艳平 于 2021-02-11 设计创作，主要内容包括：本发明涉及一种防水锤球阀,包括具有进液管道的阀体,所述阀体上固定设置有端盖,所述端盖开设有出液管道,所述的防水锤球阀还包括：阀杆,旋转设置于所述阀体上；阀球,设置于所述阀体内,所述阀球内开设有连接通道,所述连接通道能够连通所述进液管道与出液管道；调节杆,上端与所述阀杆连接,下端与所述阀球固定连接,当所述阀杆的转速超过预设值时,所述调节杆能够与所述阀杆脱离连接,从而使所述阀杆空转。本发明的优点在于：通过设置卡接件,可以自动在阀杆旋转速度过快时,使调节杆与阀杆脱离连接从而使阀球停止转动,可以有效的避免水锤的产生,不会影响球阀的密封性和使用寿命。(The invention relates to a water hammer prevention ball valve, which comprises a valve body with a liquid inlet pipeline, wherein an end cover is fixedly arranged on the valve body, a liquid outlet pipeline is arranged on the end cover, and the water hammer prevention ball valve also comprises: the valve rod is rotatably arranged on the valve body; the valve ball is arranged in the valve body, a connecting channel is formed in the valve ball, and the connecting channel can communicate the liquid inlet pipeline and the liquid outlet pipeline; and the upper end of the adjusting rod is connected with the valve rod, the lower end of the adjusting rod is fixedly connected with the valve ball, and when the rotating speed of the valve rod exceeds a preset value, the adjusting rod can be separated from the valve rod, so that the valve rod idles. The invention has the advantages that: through setting up the joint spare, thereby can make adjust the pole and break away from the connection with the valve rod and make valve ball stall automatically when valve rod rotation rate is too fast, can effectually avoid the production of water hammer, can not influence the leakproofness and the life of ball valve.)

1. The utility model provides a water hammer prevention ball valve, is including the valve body that has the feed liquor pipeline, the fixed end cover that is provided with on the valve body, liquid pipeline has been seted up to the end cover, its characterized in that, water hammer prevention ball valve still include:

the valve rod is rotatably arranged on the valve body;

the valve ball is arranged in the valve body, a connecting channel is formed in the valve ball, and the connecting channel can communicate the liquid inlet pipeline and the liquid outlet pipeline;

and the upper end of the adjusting rod is connected with the valve rod, the lower end of the adjusting rod is fixedly connected with the valve ball, and when the rotating speed of the valve rod exceeds a preset value, the adjusting rod can be separated from the valve rod, so that the valve rod idles.

2. The waterproof hammer ball valve of claim 1, wherein the valve body comprises a body, a first valve cover fixedly arranged on the body, and a second valve cover fixedly arranged on the top of the first valve cover, the valve rod is rotatably connected to the second valve cover, and the adjusting rod sequentially penetrates through the second valve cover, the first valve cover and the body from top to bottom and is fixedly connected with the valve ball.

3. The waterproof hammer ball valve of claim 2, wherein the valve stem has a coupling shaft at a lower end thereof, and the adjusting lever has a coupling groove at an upper end thereof, the coupling shaft extending into the coupling groove to rotatably couple the valve stem and the adjusting lever.

4. The waterproof hammer ball valve according to claim 3, wherein a clamping hole is formed in the connecting shaft, a receiving cavity is formed in the adjusting rod, an elastic member and a clamping member are arranged in the receiving cavity, one end of the elastic member abuts against the inner wall of the receiving cavity, the other end of the elastic member abuts against the clamping member, so that the clamping member can be clamped in the clamping groove, a control cavity is formed between one side of the clamping member away from the elastic member and the inner wall of the receiving cavity, a fan-shaped regulating cavity is formed in the body, a piston plate is arranged on the adjusting rod, the fan-shaped regulating cavity is divided into a first cavity and a second cavity by the piston plate, a communication hole for communicating the first cavity with the second cavity is formed in the piston plate, liquid is filled in the fan-shaped regulating cavity, and when the adjusting rod rotates, the liquid in the first cavity and the second cavity can circulate through the communication hole, the adjusting rod is internally provided with a shuttle valve, the shuttle valve is provided with a first inlet, a second inlet and an outlet, the first inlet is communicated with the first cavity through a first flow passage, the second inlet is communicated with the second cavity through a second flow passage, the outlet is communicated with the control cavity through a third flow passage, and when the rotating speed of the adjusting rod is higher than a preset value, liquid in the adjusting and controlling cavity can enter the control cavity through the shuttle valve, so that the clamping piece is separated from the connecting shaft.

5. The waterproof hammer ball valve according to claim 4, wherein a damping member is disposed in the communication hole, and a damping hole is formed in the damping member.

6. The waterproof hammer ball valve according to claim 4, wherein a vent cavity is formed between one side of the clamping piece close to the elastic piece and the inner wall of the accommodating cavity, an annular groove and an air outlet channel are formed in the second valve cover, the vent cavity is communicated with the annular groove, and the air outlet channel is communicated with the annular groove and the outside of the ball valve.

Technical Field

The invention relates to the field of pipeline valves, in particular to a water hammer-proof ball valve.

Background

Ball valves are generally a ball with a through hole mounted on a valve seat, which is opened and closed by rotation of the ball. The ball valve has the advantages of small fluid resistance, simple structure, tightness, reliability, convenient operation, rapid opening and closing, wide application range and the like, and is widely applied to the fields of petroleum, petrifaction, chemical industry, metallurgy, electric power, water conservancy, water heating, urban construction, fire fighting, machinery, coal, food, ships, power stations, ocean engineering and the like. In the opening or closing process of the ball valve in the prior art, if the opening and closing speed is too high, a water hammer is easily formed, a valve seat is easily loosened or damaged under the influence of the water hammer, and finally the sealing performance and the service life of the valve are influenced. The present invention is designed to solve the above problems.

Disclosure of Invention

In view of the above, it is desirable to provide a water hammer resistant ball valve.

The invention discloses a water hammer prevention ball valve, which comprises a valve body with a liquid inlet pipeline, wherein an end cover is fixedly arranged on the valve body, a liquid outlet pipeline is arranged on the end cover, and the water hammer prevention ball valve also comprises:

the valve rod is rotatably arranged on the valve body;

the valve ball is arranged in the valve body, a connecting channel is formed in the valve ball, and the connecting channel can communicate the liquid inlet pipeline and the liquid outlet pipeline;

and the upper end of the adjusting rod is connected with the valve rod, the lower end of the adjusting rod is fixedly connected with the valve ball, and when the rotating speed of the valve rod exceeds a preset value, the adjusting rod can be separated from the valve rod, so that the valve rod idles.

In one embodiment, the valve body comprises a body, a first valve cover fixedly arranged on the body, and a second valve cover fixedly arranged on the top of the first valve cover, the valve rod is rotatably connected to the second valve cover, and the adjusting rod sequentially penetrates through the second valve cover, the first valve cover and the body from top to bottom and is fixedly connected with the valve ball.

In one embodiment, the lower end of the valve rod is provided with a connecting shaft, the upper end of the adjusting rod is provided with a connecting groove, and the connecting shaft extends into the connecting groove so as to rotatably connect the valve rod and the adjusting rod.

In one embodiment, a clamping hole is formed in the connecting shaft, a containing cavity is formed in the adjusting rod, an elastic piece and a clamping piece are arranged in the containing cavity, one end of the elastic piece abuts against the inner wall of the containing cavity, the other end of the elastic piece abuts against the clamping piece, so that the clamping piece can be clamped in the clamping groove, a control cavity is formed between one side, away from the elastic piece, of the clamping piece and the inner wall of the containing cavity, a fan-shaped regulating and controlling cavity is formed in the body, a piston plate is arranged on the adjusting rod and divides the fan-shaped regulating and controlling cavity into a first cavity and a second cavity, a communication hole communicating the first cavity with the second cavity is formed in the piston plate, liquid is filled in the fan-shaped regulating and controlling cavity, and when the adjusting rod rotates, the liquid in the first cavity and the second cavity can flow through the communication hole, the adjusting rod is internally provided with a shuttle valve, the shuttle valve is provided with a first inlet, a second inlet and an outlet, the first inlet is communicated with the first cavity through a first flow passage, the second inlet is communicated with the second cavity through a second flow passage, the outlet is communicated with the control cavity through a third flow passage, and when the rotating speed of the adjusting rod is higher than a preset value, liquid in the adjusting and controlling cavity can enter the control cavity through the shuttle valve, so that the clamping piece is separated from the connecting shaft.

In one embodiment, a damping piece is arranged in the communication hole, and a damping hole is formed in the damping piece.

In one embodiment, a vent cavity is formed between one side of the clamping piece close to the elastic piece and the inner wall of the accommodating cavity, an annular groove and an air outlet channel are arranged in the second valve cover, the vent cavity is communicated with the annular groove, and the air outlet channel is communicated with the annular groove and the outside of the ball valve.

The invention has the advantages that: through setting up the joint spare, thereby can make adjust the pole and break away from the connection with the valve rod and make valve ball stall automatically when valve rod rotation rate is too fast, can effectually avoid the production of water hammer, can not influence the leakproofness and the life of ball valve.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

fig. 3 is an enlarged view of fig. 1 at I.

In the figure, a valve body 1, a liquid inlet pipeline 101, a body 11, a first cavity 111, a second cavity 112, a first valve cover 12, a second valve cover 13, a ring groove 131, a gas outlet channel 132, an end cover 2, a liquid outlet pipeline 201, a valve rod 3, a connecting shaft 31, a clamping hole 32, a valve ball 4, a connecting channel 41, an adjusting rod 5, a connecting groove 51, a shuttle valve 53, a first inlet 531, a second inlet 532, an outlet 533, a piston plate 54, a communicating hole 541, a first flow channel 501, a second flow channel 502, a third flow channel 503, an elastic member 6, a clamping member 7, a control cavity 71, a vent cavity 72, a damping member 8 and a damping hole 81 are arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, the present invention discloses a water hammer prevention ball valve, which includes a valve body 1 having a liquid inlet pipeline 101, an end cover 2 is fixedly disposed on the valve body 1, the end cover 2 is provided with a liquid outlet pipeline 201, and the water hammer prevention ball valve further includes: valve rod 3, valve ball 4, regulation pole 5. The valve rod 3 is rotatably arranged on the valve body 1; the valve ball 4 is arranged in the valve body 1, a connecting channel 41 is formed in the valve ball 4, and the connecting channel 41 can communicate the liquid inlet pipeline 101 and the liquid outlet pipeline 201; the upper end of the adjusting rod 5 is connected with the valve rod 3, the lower end of the adjusting rod 5 is fixedly connected with the valve ball 4, and when the rotating speed of the valve rod 3 exceeds a preset value, the adjusting rod 5 can be separated from the valve rod 3, so that the valve rod 3 idles.

Preferably, the valve body 1 comprises a body 11, a first valve cover 12 fixedly arranged on the body 11, and a second valve cover 13 fixedly arranged on the top of the first valve cover 12, the valve rod 3 is rotatably connected to the second valve cover 13, and the adjusting rod 5 sequentially penetrates through the second valve cover 13, the first valve cover 12 and the body 11 from top to bottom and is fixedly connected with the valve ball 4.

Preferably, the lower end of the valve rod 3 is provided with a connecting shaft 31, the upper end of the adjusting rod 5 is provided with a connecting groove 51, and the connecting shaft 31 extends into the connecting groove 51 so as to rotatably connect the valve rod 3 and the adjusting rod 5.

Preferably, the connecting shaft 31 is provided with a clamping hole 32, the adjusting rod 5 is provided with an accommodating cavity, the accommodating cavity is provided with an elastic member 6 and a clamping member 7, one end of the elastic member 6 abuts against the inner wall of the accommodating cavity, the other end of the elastic member abuts against the clamping member 7, so that the clamping member 7 can be clamped in the clamping hole 32, a control cavity 71 is formed between one side of the clamping member 7 away from the elastic member 6 and the inner wall of the accommodating cavity, the body 11 is provided with a fan-shaped regulating and controlling cavity, the adjusting rod 5 is provided with a piston plate 54, the piston plate 54 divides the fan-shaped regulating and controlling cavity into a first cavity 111 and a second cavity 112, the piston plate 54 is provided with a communication hole 541 communicating the first cavity 111 and the second cavity 112, the fan-shaped regulating and controlling cavity is filled with liquid, when the adjusting rod 5 rotates, the liquid in the first cavity 111 and the second cavity 112 can flow through the communication hole 541, a shuttle valve 53 is arranged in the adjusting rod 5, the shuttle valve 53 is provided with a first inlet 531, a second inlet 532 and an outlet 533, the first inlet 531 is communicated with the first cavity 111 through a first flow passage 501, the second inlet 532 is communicated with the second cavity 112 through a second flow passage 502, the outlet 533 is communicated with the control cavity 71 through a third flow passage 503, when the rotating speed of the adjusting rod 5 is higher than a preset value, liquid in the fan-shaped regulating cavity can enter the control cavity 71 through the shuttle valve 53, and therefore the clamping piece 7 is separated from the connecting shaft 31.

It should be noted that the shuttle valve has two inlet ports, and one outlet port, and when one of the inlet ports is fed, the other inlet port is blocked, thereby allowing the fluid to flow out of the outlet port.

Preferably, a damping member 8 is disposed in the communication hole 541, and a damping hole 81 is formed in the damping member 8. It will be appreciated that the orifice 81 has a smaller diameter and the fluid is more greatly retarded as it passes through the orifice 81, thereby increasing the pressure of the fluid and the greater the flow rate through the orifice 81, the higher the pressure of the fluid.

Preferably, the joint member 7 is close to one side of the elastic member 6 and a vent cavity 72 is formed between the inner walls of the accommodating cavity, an annular groove 131 and an air outlet channel 132 are arranged in the second valve cover 13, the vent cavity 72 is communicated with the annular groove 131, and the air outlet channel 132 is communicated with the annular groove 131 and the outside of the ball valve.

The working mode of the invention is as follows: as shown in fig. 2, at this time, the ball valve is in an open state, when the valve rod 3 rotates clockwise, liquid in the second cavity 112 enters the first cavity 111 through the communication hole 541, and hydraulic pressure in the second cavity 112 rises, the liquid enters the control cavity 71 through the second flow channel 502 and the third flow channel 503 in sequence, when the rotating speed of the valve rod 3 is higher than a preset value, the liquid pressure generated by the liquid flow through the damping hole 81 can overcome the elastic force of the elastic member 6, so that the clamping member 7 is separated from the clamping hole 32, the valve rod 3 cannot drive the adjusting rod 5 to rotate, and the valve ball 4 cannot be rotated continuously, so as to avoid water hammer caused by too fast closing of the valve ball 4, and when the valve rod 3 needs to be closed continuously, the clamping member 7 is clamped with the clamping hole 32 again by rotating the valve rod 3, so that the ball valve can be closed continuously at a slow;

similarly, in the process of opening the ball valve, when the valve rod 3 rotates counterclockwise, the liquid in the first cavity 111 enters the second cavity 112 through the communication hole 541, the hydraulic pressure in the first cavity 111 rises, the liquid sequentially enters the control cavity 71 through the first flow channel 501 and the third flow channel 503, when the rotating speed of the valve rod 3 is higher than a preset value, the liquid pressure can overcome the elastic force of the elastic part 6, the clamping part 7 is separated from the connecting shaft 31, the valve rod 3 cannot drive the adjusting rod 5 to rotate, and then the valve ball 4 cannot continue to rotate, so that the damage of the liquid pressure dip to the pipeline caused by the excessively fast opening of the ball valve is avoided, when the ball valve needs to continue to be opened, the clamping part 7 is clamped with the clamping hole 32 again by rotating the valve rod 3, and the opening speed of the ball valve can be prevented from being excessively fast.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.