Double-seal compensation type ball valve seat

Abstract

The utility model relates to a double seal compensation type ball valve seat, which comprises a valve body, a valve ball body, valve seat bodies, a valve rod and a sealing mechanism, the valve ball body is arranged in the valve body, the valve seat bodies are arranged at two ends of the valve ball body, and the valve rod is arranged at the top of the valve ball body. According to the double-seal compensation type ball valve seat, firstly, the soft seal and the hard seal are arranged on the left side and the right side of the valve ball body to form double seal, when the valve body is started, a user rotates the valve rod to drive the valve ball body to rotate, liquid flows in from the water inlet and flows out from the water outlet, and the seal ring can seal the valve seat body for the first time; meanwhile, the clamping seats are limited on the left side and the right side of the valve ball body, after the valve ball body is rotated, the sealing gaskets can seal the valve ball body rapidly, and finally when the valve ball body is used for a long time, the gap between the valve ball body and the valve seat body becomes large, the reset springs can reset rapidly, and the sealing gaskets are pushed to conduct dynamic sealing on the exterior of the valve ball body.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically to a double-sealed compensation ball valve seat. Background Technology

[0002] A ball valve is a valve that is opened and closed by rotating around the axis of the ball valve driven by the valve stem. Ball valves are characterized by good wear resistance, excellent sealing performance, easy opening and closing, and long service life, and are widely used. However, the sealing performance of a ball valve has a certain impact on the flow and sealing of the medium and the service life of the valve. Poor sealing performance may cause leakage or seepage of the medium, affecting normal fluid control.

[0003] Due to long-term and repeated rotational friction, the gap between the inner cavity of the valve seat and the ball in existing ball valves increases, affecting the sealing performance after the ball valve is closed. Furthermore, existing ball valves are usually single soft or hard seals, which have poor sealing effect and affect the service life of the ball valve. Therefore, a double-seal compensation ball valve seat is proposed to solve the above-mentioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a double-sealed compensation ball valve seat, which has the advantage of good sealing effect. It solves the problem that in existing ball valves, the gap between the inner cavity of the valve seat and the ball increases due to long-term and repeated rotational friction, which affects the sealing performance of the ball valve after it is closed. Furthermore, existing ball valves are usually single soft seals or hard seals, which have poor sealing effect and affect the service life of the ball valve.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-sealed compensation ball valve seat, comprising a valve body, a ball body, a seat body, a stem, and a sealing mechanism, wherein the ball body is disposed inside the valve body, the seat body is disposed at both ends of the ball body, the stem is disposed at the top of the ball body, and the sealing mechanism is disposed inside the valve body.

[0006] The sealing mechanism includes a sealing gasket, a retaining seat, a receiving groove, a return spring, an extension rod, a sealing plate, and a sealing ring. The sealing gasket is located inside the valve body. The retaining seat is located on the side of the sealing gasket away from the valve ball body. The receiving groove is located inside the valve body. The return spring is located inside the receiving groove. The extension rod is located on the side of the return spring away from the inner wall of the receiving groove. The sealing plate is located at both ends of the valve ball body. The sealing plate is located outside the valve seat body. The sealing ring is sleeved on the outside of the valve seat body.

[0007] Furthermore, the bottom of the valve stem extends into the interior of the valve body and is connected to the top of the valve ball body, and the opposite sides of the two valve seat bodies are respectively connected to the left and right sides of the valve ball body.

[0008] Furthermore, the valve body has an inlet on the left side and an outlet on the right side, and the four sealing gaskets are divided into two groups, with two sealing gaskets in each group.

[0009] Furthermore, the two sets of sealing gaskets are located on the left and right sides of the valve ball body, respectively, and the opposite sides of the two sets of sealing gaskets extend into the interior of the two sets of card seats.

[0010] Furthermore, both sets of card holders are L-shaped, and the four extension rods are divided into two groups, with two extension rods in each group. The side of the two sets of extension rods away from the two sets of return springs is connected to the opposite side of the two sets of card holders.

[0011] Furthermore, the four sealing plates are respectively connected to the four sealing gaskets, and the side of the four sealing plates away from the sealing gaskets is located at the top or bottom of the two valve seat bodies respectively.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The valve seat of this double-sealed compensating ball valve is fixed to the valve stem on the valve ball body by fixing screws or other means. When the user rotates the valve stem, the valve ball body will rotate, thereby controlling the inflow and outflow of liquid. By setting a sealing mechanism, the various structures of the sealing mechanism cooperate with each other to achieve double sealing and make the sealing effect better. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the present utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a schematic diagram of the sealing mechanism of this utility model.

[0017] In the diagram: 1 Valve body, 2 Valve ball body, 3 Valve seat body, 4 Valve stem, 5 Sealing structure, 501 Sealing gasket, 502 Card slot, 503 Receiving groove, 504 Return spring, 505 Extension rod, 506 Sealing plate, 507 Sealing ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 A double-sealed compensation ball valve seat includes a valve body 1, a ball body 2, a seat body 3, a stem 4, and a sealing mechanism 5. The ball body 2 is located inside the valve body 1, the seat body 3 is located at both ends of the ball body 2, the stem 4 is located at the top of the ball body 2, and the sealing mechanism 5 is located inside the valve body 1.

[0020] The sealing mechanism 5 includes a sealing gasket 501, a retainer 502, a receiving groove 503, a return spring 504, an extension rod 505, a sealing plate 506, and a sealing ring 507. The sealing gasket 501 is located inside the valve body 1. The retainer 502 is located on the side of the sealing gasket 501 away from the valve ball body 2. The receiving groove 503 is located inside the valve body 1. The return spring 504 is located inside the receiving groove 503. The extension rod 505 is located on the side of the return spring 504 away from the inner wall of the receiving groove 503. The sealing plate 506 is located at both ends of the valve ball body 2. The sealing plate 506 is located outside the valve seat body 3. The sealing ring 507 is sleeved on the outside of the valve seat body 3.

[0021] Example 1: In Figure 1 and Figure 2 In this system, the valve stem 4 is fixed to the valve ball body 2 by fixing screws or other means. When the user rotates the valve stem 4, the valve ball body 2 will rotate, thereby controlling the inflow and outflow of liquid.

[0022] By setting up a sealing mechanism 5, the various structures of the sealing mechanism 5 cooperate with each other to achieve double sealing and improve the sealing effect. The sealing mechanism 5 includes a sealing gasket 501, a card seat 502, a receiving groove 503, a return spring 504, an extension rod 505, a sealing plate 506, and a sealing ring 507.

[0023] Example 2: By setting sealing gaskets 501, which are rubber gaskets, four sealing gaskets 501 are limited to the left and right sides of the valve ball body 2 by the retainer 502. When the valve ball body 2 is rotated, the sealing gaskets 501 will quickly seal the valve ball body 2.

[0024] In addition, both sets of card seats 502 are L-shaped, and the four extension rods 505 are divided into two groups, with two extension rods 505 in each group. The side of the two sets of extension rods 505 away from the two sets of return springs 504 is connected to the opposite side of the two sets of card seats 502 respectively. The return spring 504 is limited by the receiving groove 503. One end of the return spring 504 is connected to the inner wall of the receiving groove 503, and the other end is connected to the extension rod 505. When used for a long time, the gap between the valve ball body 2 and the valve seat body 3 becomes larger. At this time, the return spring 504 will quickly return to its original position and push the sealing gasket 501 to dynamically seal the outside of the valve ball body 2.

[0025] It also includes setting a sealing ring 507, which is placed on the outside of the valve seat body 3, to further soft seal the valve seat body 3, thereby ensuring a better sealing effect.

[0026] In summary, this double-sealed compensation ball valve seat, by setting sealing gaskets 501 (rubber gaskets), limits four sealing gaskets 501 to the left and right sides of the valve ball body 2 via retainer 502. After the valve ball body 2 is rotated, the sealing gaskets 501 quickly seal the valve ball body 2. The return spring 504 is limited by the receiving groove 503. One end of the return spring 504 is connected to the inner wall of the receiving groove 503, and the other end is connected to the extension rod 505. When the gap between the valve ball body 2 and the valve seat body 3 increases after long-term use, the return spring 504 will quickly return to its original position, pushing the sealing gaskets 501 to dynamically seal the outside of the valve ball body 2. By setting a sealing ring 507 on the outside of the valve seat body 3, the valve seat body 3 is further softly sealed, thereby ensuring a better sealing effect.

[0027] Furthermore, during use, soft and hard seals are first set on the left and right sides of the valve ball body 2 to form a double seal. When the valve body 1 is started, the user rotates the valve stem 4 to drive the valve ball body 2 to rotate, so that the liquid flows in from the inlet and flows out from the outlet. The sealing ring 507 will initially seal the valve seat body 3, and at the same time, it is limited on the left and right sides of the valve ball body 2 by the retainer 502. After the valve ball body 2 is rotated, the sealing gasket 501 will quickly seal the valve ball body 2. Finally, when the valve ball body 2 is used for a long time, the gap between the valve ball body 2 and the valve seat body 3 will increase. At this time, the return spring 504 will quickly return to its original position and push the sealing gasket 501 to dynamically seal the outside of the valve ball body 2.

[0028] All electrical components mentioned in this article are connected to external controllers and 220V AC mains power. The controllers can be conventional known devices such as computers. The specific models and specifications of each device mentioned in this article need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt existing technologies in this field, so they will not be described in detail here.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-sealed compensation ball valve seat, comprising a valve body (1), a ball body (2), a seat body (3), a stem (4), and a sealing mechanism (5), characterized in that: The valve ball body (2) is located inside the valve body (1), the valve seat body (3) is located at both ends of the valve ball body (2), the valve stem (4) is located at the top of the valve ball body (2), and the sealing mechanism (5) is located inside the valve body (1). The sealing mechanism (5) includes a sealing gasket (501), a retainer (502), a receiving groove (503), a return spring (504), an extension rod (505), a sealing plate (506), and a sealing ring (507). The sealing gasket (501) is located inside the valve body (1). The retainer (502) is located on the side of the sealing gasket (501) away from the valve ball body (2). The receiving groove (503) is located on the valve body (1). Inside the valve body (2), the return spring (504) is located inside the receiving groove (503), the extension rod (505) is located on the side of the return spring (504) away from the inner wall of the receiving groove (503), the sealing plate (506) is located at both ends of the valve ball body (2), the sealing plate (506) is located outside the valve seat body (3), and the sealing ring (507) is sleeved on the outside of the valve seat body (3).

2. The double-sealed compensating ball valve seat according to claim 1, characterized in that: The bottom of the valve stem (4) extends into the interior of the valve body (1) and is connected to the top of the valve ball body (2). The opposite sides of the two valve seat bodies (3) are respectively connected to the left and right sides of the valve ball body (2).

3. The double-sealed compensating ball valve seat according to claim 1, characterized in that: The valve body (1) has an inlet on the left side and an outlet on the right side. The four sealing gaskets (501) are divided into two groups, with two sealing gaskets (501) in each group.

4. The double-sealed compensation ball valve seat according to claim 1, characterized in that: The two sets of sealing gaskets (501) are located on the left and right sides of the valve ball body (2), respectively, and the opposite sides of the two sets of sealing gaskets (501) extend into the interior of the two sets of card seats (502).

5. The double-sealed compensation ball valve seat according to claim 1, characterized in that: Both sets of card holders (502) are L-shaped, and the four extension rods (505) are divided into two groups, with two extension rods (505) in each group. The side of the two sets of extension rods (505) away from the two sets of return springs (504) is connected to the opposite side of the two sets of card holders (502).

6. The double-sealed compensation ball valve seat according to claim 1, characterized in that: The four sealing plates (506) are respectively connected to the four sealing gaskets (501), and the side of the four sealing plates (506) away from the sealing gaskets (501) is located at the top or bottom of the two valve seat bodies (3).

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