TWM472782U - Ball pad pressure relief structure of ball valve - Google Patents

Description

Ball valve ball pressure relief structure

This creation is related to a pressure relief structure, in particular to a pressure relief structure of a ball valve gasket.

Ball valves are widely used and are often used in various industrial piping to control the opening, closing or flow direction between connecting lines. A generally common ball valve mainly includes a valve body, the valve body is provided with a ball cavity, the ball cavity is provided with a ball body that can be rotated, the ball body is provided with a through hole transversely, and a ball shaft is fixed on the ball body. The shaft can be inserted upwardly from the valve body to fix an operating handle, so that when the user turns the operating handle, the central shaft can be rotated about its own axis, and the sphere is rotated through the central shaft to make the sphere The flow path of the sphere can communicate with the pipeline by the rotation of the sphere to achieve the purpose of controlling the opening, closing or circulation direction of the pipeline, wherein the ball and the valve are generally used to prevent fluid leakage inside the pipeline. Ball pads are provided between the bodies to create a sealing effect.

However, during the use of the ball valve, the fluid transported inside the pipe will inevitably penetrate into the gap formed between the ball pad and the ball body and the valve body, so that the fluid remains in the ball cavity, and then the fluid is affected by When the temperature changes and expands, it is easy to explode and cause danger. In view of this, the creator of this case, after observing the above shortcomings, believes that the conventional ball valve system is necessary for further improvement, and there is no such creation.

The purpose of this creation is to provide a ball valve pressure relief structure for a ball valve that is capable of draining fluid accumulated in a ball chamber for pressure relief, thereby improving the safety of the ball valve.

In order to achieve the above objectives, the ball valve pressure relief structure of the ball valve provided by the creation, the package The valve seat has a ball cavity, and the valve seat is further provided with two openings and a shaft hole communicating with the ball cavity on the circumferential side of the valve seat, and a ball body is arranged in the ball cavity. And the outer side of the ball is provided with a through hole, and the ball is provided with a shaft, and the other end of the shaft passes through the shaft hole and is connected with an operating handle, and the inner wall of the ball cavity is Each of the balls is further provided with a ball pad around the openings, wherein at least one of the ball pads is provided with a ring groove toward a side of the inner wall of the ball cavity, and the ring groove receives a ring body therein. The thickness of the ring body is greater than the depth of the ring groove, so that one side of the ring body protrudes from the ring groove and abuts against the inner wall of the ball cavity, thereby making the ball pad and the inner wall of the ball cavity There is a space for deformation.

The ball cushion pressure relief structure of the ball valve provided by the present invention can have residual fluid in the ball cavity, and when the pressure in the ball cavity is greater than the pressure outside the ball cavity, thereby causing danger, the The fluid is pushed against the ball pad to compress the deformation space, so that a gap is formed between the ball pad and the ball, and the gap is released, so that the fluid accumulated in the ball cavity can be effectively drained to improve the use of the ball valve. Security.

10‧‧‧ valve seat

11‧‧‧ ball cavity

121‧‧‧ openings

122‧‧‧Axis hole

13‧‧‧Flange seat

14‧‧‧Perforation

20‧‧‧ sphere

21‧‧‧Perforation

22‧‧‧ shaft

30‧‧‧ ball mat

301‧‧‧First ball mat

309‧‧‧second ball mat

31‧‧‧ Ring groove

32‧‧‧Act

321‧‧‧elastic ring

322‧‧‧ wear layer

33‧‧‧Bevel

50‧‧‧Operation handle

Figure 1 is an external view of the creation.

Figure 2 is a cross-sectional view of the creation.

Figure 3 is a partial enlarged view of the creation.

Figure 4 is a cross-sectional view of the ball pad and ring of the present invention.

Figure 5 is a schematic diagram of the use of this creation.

Figure 6 is a schematic diagram of the use of this creation.

Figure 7 is a schematic diagram of the use of this creation.

Figure 8 is a schematic diagram of the use of this creation.

Please refer to FIG. 1 and FIG. 2 , which are an external view and a cross-sectional view of the present invention. The utility model discloses a ball cushion pressure relief structure of a ball valve, and the ball cushion pressure relief structure of the ball valve comprises:

a valve seat 10, a ball chamber 11 is disposed in the valve seat 10, and a second opening 121 and a shaft hole 122 communicating with the ball cavity 11 are further disposed on a circumferential side of the valve seat 10. In this embodiment, The openings 121 are correspondingly disposed on opposite sides of the valve seat 10, and the shaft holes 122 are disposed on the top side of the valve seat 10 and located between the openings 121, and the openings 121 and the shaft holes 122 are The diameter of the ball cavity 11 is smaller than the diameter of the ball cavity 11. The valve seat 10 is provided with a flange seat 13 at the outer edge of the opening 121. The flange seats 13 are provided with a plurality of holes 14 at equal angular intervals.

A ball 20 is disposed in the ball cavity 11, and the diameter of the ball 20 is larger than the diameter of the opening 121 and the shaft hole 122, and the peripheral side of the ball 20 is transversely inserted through the opening 121. A through hole 21 is defined, and a shaft 22 is fixed on the ball 20, and the other end of the shaft 22 passes through the shaft hole 122 longitudinally, and the ball cavity 11 is passed upward, and the shaft 22 is The ball 20 can be rotated about its own axis, and the ball 20 can be rotated by the rotation of the shaft 22 so that the through hole 21 of the ball 20 can communicate with the openings 121 by the rotation of the ball 20.

The two ball pads 30 are disposed between the inner wall of the ball cavity 11 and the ball 20, and are respectively disposed around the periphery of the openings 121, at least one of which is shown in FIG. 3 and FIG. The outer side of the ball pad 30, that is, the ball pad 30 facing one side of the inner wall of the ball cavity 11, is provided with a ring groove 31, and a ring body 32 is disposed in the ring groove 31, and the thickness of the ring body 32 is greater than The ring groove 31 has a depth such that one side of the ring body 32 protrudes from the ring groove 31 and abuts against the inner wall of the ball cavity 11, thereby deforming the ball pad 30 and the inner wall of the ball cavity 11. In the present embodiment, for convenience of description, the ball pads 30 are further defined as a first ball pad 301 and a second ball pad 302, and the ring is provided on the first ball pad 301. The groove 31 and the ring body 32 are not limited. The ring body 32 is an elastic ring 321 and a wear layer 322 is coated on the outer peripheral side of the elastic ring 321 . The wear layer 322 is made of Teflon. The material is formed, and the inner side of the ball pads 30, that is, the ball pads 30 facing one side of the ball 20, is provided with a slope 33, and the slopes 33 are attached to the outer surface of the ball 20.

An operating handle 50 is attached to the upper edge of the shaft 22 for controlling the rotation of the shaft 22, thereby controlling the direction of the through hole 21 of the ball 20.

In order to further understand the characteristics of this creation, the use of technical means and the expected results, we will describe the use of this creation, and believe that we can have a deeper and more specific understanding of this creation, as follows:

Continuing to refer to FIG. 5, when a fluid flows into the ball cavity 11 from the direction of the first ball pad 301, and the pressure in the ball cavity 11 and the pressure at the opening 121 are both zero, When the beveled surface 33 of the ball pad 30 is attached to the surface of the ball 20, the ball valve of the present invention can be sealed by the ball pad 30 to close the ball 20 and the ball cavity 11. The gap prevents the fluid inside the pipeline from leaking out.

Please continue to refer to FIG. 6 . During the operation of the ball valve, the fluid inside the pipeline penetrates into the ball cavity 11 , resulting in residual fluid in the ball cavity 11 , and the ball cavity 11 is inside. When the pressure is greater than the pressure at the opening 121, since the area of the ring body 32 in contact with the inner wall of the ball cavity 11 is small, the pressure of the residual fluid in the ball cavity 11 can easily compress the ring body. 32 is deformed to further push the first ball pad 301 to compress the deformation space, so that the slope 33 of the first ball pad 301 creates a gap with the surface of the ball 20 to cause the fluid remaining in the ball cavity 11 The gap can be drained out to relieve the pressure in the ball chamber 11 so that the ball chamber 11 reaches the pressure relief effect.

Referring to FIG. 7 again, when the fluid flows into the ball cavity 11 from the second ball pad 302, and there is residual fluid in the ball cavity 11, the pressure in the ball cavity 11 is greater than the opening 121. When the pressure is applied, the pressure of the fluid will be pushed against the first ball pad 301 to compress the deformation space, so that the ball 20 can move slightly toward the first ball pad 301, thereby allowing the fluid to flow into the opening 121. The slope 33 of the ball pad 30 creates a gap with the surface of the ball 20, so that the fluid remaining in the ball cavity 11 can be drained through the gap to relieve the pressure in the ball cavity 11, thereby The ball cavity 11 achieves a pressure relief effect.

Please continue to refer to FIG. 8 , when the flow system flows into the ball cavity 11 from the first ball pad 301 and the second ball pad 302 at the same time, and the ball cavity 11 has a residual fluid therein, and When the pressure in the ball chamber 11 is greater than the pressure of the fluid flowing in through the openings 121, at this time The pressure of the fluid is pushed against the first ball pad 301 to compress the deformation space, so that the slope 33 of the first ball pad 301 creates a gap with the surface of the ball 20, and the ball 20 can be directed toward the first ball pad. The direction of the 301 is slightly moved, and the slope 33 of the second ball pad 302 and the surface of the ball 20 also create a gap, so that the fluid remaining in the ball cavity 11 can be discharged through the gaps to be vented. The pressure in the ball chamber 11 causes the ball chamber 11 to reach a pressure relief effect.

Thereby, the ball cushion pressure relief structure of the ball valve of the present invention can have residual fluid in the ball cavity 11, and the pressure in the ball cavity 11 is greater than the pressure outside the ball cavity 11, thereby causing danger. When the crucible is pressed, the fluid is pushed against the first ball pad 301 to compress the deformation space, so that a gap is formed between the first ball pad 301 and the spherical body 20, and the gap is released from the gap, so that the fluid can be effectively drained and accumulated. The fluid in the ball chamber 11 is used to improve the safety of the ball valve.

It is worth mentioning that the elastic ring 321 of the ring body 32 is coated with a wear-resistant layer 322 of Teflon material. In addition to improving the wear resistance of the ring body 32, the ring body 32 can resist strong acid, strong base.

Hereby, the characteristics of this creation and its achievable expected effects are stated as follows:

The ball cushion pressure relief structure of the ball valve of the present invention can have residual fluid in the ball cavity 11, and the pressure in the ball cavity 11 is greater than the pressure outside the ball cavity 11, thereby causing a danger. The fluid is pushed against the first ball pad 301 to compress the deformation space, so that a gap is formed between the first ball pad 301 and the ball 20, and the gap is released, so that the ball can be effectively drained and accumulated in the ball cavity 11. Fluid to improve the safety of the ball valve.

In summary, this creation has its excellent progress and practicality in similar products. At the same time, it has investigated the technical information about such structures at home and abroad. The same structure has not been found in the literature. This creation has already possessed new types of patent requirements, and applied for it according to law.

However, the above-mentioned ones are only one of the preferred embodiments of the present invention, and the equivalent structural changes in the application of the present specification and the scope of the patent application are intended to be included in the scope of the present patent.

10‧‧‧ valve seat

11‧‧‧ ball cavity

121‧‧‧ openings

122‧‧‧Axis hole

20‧‧‧ sphere

21‧‧‧Perforation

22‧‧‧ shaft

30‧‧‧ ball mat

301‧‧‧First ball mat

302‧‧‧second ball mat

31‧‧‧ Ring groove

32‧‧‧Act

33‧‧‧Bevel

Claims (3)

A ball valve pressure relief structure of a ball valve, the ball valve system comprises a valve seat, and a ball cavity is arranged in the valve seat, and a circumferential opening of the valve seat is further provided with two openings and a shaft hole communicating with the ball cavity In addition, a ball body is disposed in the ball cavity, and a peripheral end of the ball body is provided with a through hole. Further, the ball body is provided with a shaft, and the other end of the shaft is passed through the shaft hole and connected There is an operating handle, and a ball pad is disposed around the inner wall of the ball cavity and the ball, and the main feature is: at least one ball pad, which is looped toward one side of the inner wall of the ball cavity. The ring groove is provided with a ring body, and the ring body has a thickness greater than a depth of the ring groove, so that one side of the ring body protrudes from the ring groove and abuts against the ring groove The inner wall of the ball cavity, in turn, maintains a deformation space between the ball pad and the inner wall of the ball cavity. The pressure relief structure of the ball valve gasket according to claim 1, wherein the ring system is an elastic ring, and a wear layer is coated on the outer peripheral side of the elastic ring. The pressure relief structure of the ball valve gasket according to claim 2, wherein the wear layer is made of a Teflon material.