Static seal blow-proof structure for valve seat of ball valve

Abstract

The utility model relates to the technical field of valves, and discloses a ball valve seat static seal anti-blowing structure which comprises a first valve body, second valve bodies are fixedly connected to the left side and the right side of the first valve body, a valve rod is rotationally connected to the top of the inner wall of the first valve body, and a fixing shaft is rotationally connected to the bottom of the inner wall of the first valve body. And valve seats are arranged on the opposite sides of the two second valve bodies correspondingly, first sealing rings are fixedly connected to the opposite sides of the two valve seats correspondingly, and first springs are fixedly connected to the opposite sides of the two valve seats correspondingly. According to the ball valve, the connecting ring is arranged between the valve seat and the second valve body, and the first spring, the first guide rod and the second guide rod are arranged between the valve seat and the connecting ring, so that when the ball valve is subjected to pressure generated by rotation of the ball valve in the use process, the pressure is uniformly shared and buffered; therefore, the service life of the anti-blowing structure can be prolonged, and the problem that the valve seat of the ball valve is prone to damage due to frequent use is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially relates to a ball valve seat static sealing anti -blowing structure. BACKGROUND

[0002] Ball valve seat static sealing anti -blowing structure is the structure that is designed to prevent the valve seat static sealing ring from being blown off from the valve seat cooperation gap in the frequent switching process, guarantees the valve sealing reliable, prolongs the valve service life, mainly uses in petrochemical industry, coal chemical industry, metallurgical industry, uses in high temperature high pressure difference gas or steam working condition emergency cut -out ball valve.

[0003] The ball valve seat static sealing anti -blowing structure of the prior art, metal sealing gasket is equipped between the valve seat and the valve body, the static sealing of the two ends of the valve is realized by the pre -tightening force of the spring, frequent valve opening and closing operation down long -term can make the valve seat appear abrasion, spring aging, influence sealing accuracy, and when the transmission medium contains solid particles or impurities, the valve seat sealing surface is vulnerable to wear. UTILITY MODEL CONTENTS

[0004] In order to make up for the above insufficient, the utility model provides a ball valve seat static sealing anti -blowing structure, aims at solving the problem that ball valve seat is easy to be damaged due to frequent use.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a ball valve seat static sealing anti -blowing structure, including first valve body, the left and right sides of first valve body are all fixedly connected with second valve body, the inner wall top of first valve body is rotatably connected with valve rod, the inner wall bottom of first valve body is rotatably connected with fixed shaft, the opposite side of two second valve bodies is all provided with valve seat, the opposite side of two valve seats is all fixedly connected with first sealing ring, the opposite side of two valve seats is all fixedly connected with first spring, the opposite side of two first springs is all fixedly connected with connecting ring, the opposite side of two connecting rings is all fixedly connected with the first guide rod that is evenly distributed, the opposite side of multiple first guide rods of left and right sides is all slidably connected with second guide rod, the opposite side of two connecting rings is all fixedly connected with extension ring, the outer surface of two valve seats and extension ring is all fixedly connected with second sealing ring, the inner wall of second valve body is provided with quick installation assembly, quick installation assembly is used for the quick installation of valve seat.

[0006] Preferably, the quick installation assembly includes a plurality of buckles, the plurality of buckles are fixedly connected between the two connecting rings, the opposite side of the inner wall of the two second valve bodies is fixedly connected with a snap ring, the outer surface of the two snap rings is fixedly connected with the reverse clamping block that is evenly distributed, the inner wall of the two second valve bodies is provided with a second spring, the opposite side of the two springs is fixedly connected with a first connecting ring, and the opposite side of the two springs is fixedly connected with a second connecting ring.

[0007] Preferably, the valve rod is fixedly connected with a ball valve between the fixed shaft, the top of the valve rod penetrates and extends to the top of the first valve body, and the valve rod is used for controlling rotation of the ball valve.

[0008] Preferably, the outer surface of the valve seat is in a stepped shape, the first spring is fixed at the outermost plane of the valve seat steps, and the second guide rod is fixed at the innermost step plane of the valve seat.

[0009] Preferably, the inner wall of the valve seat is in a wave shape structure, so as to increase a contact area, disperse a friction force and reduce abrasion.

[0010] Preferably, the two second connecting rings are slidably connected between opposite sides of the inner walls of the two second valve bodies, and the two first connecting rings are fixedly connected between opposite sides of the inner walls of the two second valve bodies.

[0011] Preferably, the second connecting ring is located between the clamping ring and the first connecting ring.

[0012] Preferably, the opposite sides of the two second connecting rings are fixedly connected with uniformly distributed connecting pieces, and the connecting pieces are used for clamping reverse clamping blocks to prevent the clamping buckles from moving to the reverse clamping blocks.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the connecting ring is arranged between the valve seat and the second valve body, the first spring, the first guide rod and the second guide rod are arranged between the valve seat and the connecting ring, pressure generated by rotation of the ball valve is evenly shared and buffered during use of the valve, the blowout prevention structure has a prolonged service life, and the problem that the valve seat of the ball valve is easily damaged due to frequent use is solved.

[0015] 2. In the utility model, the clamping ring is arranged in the inner wall of the second valve body, when the valve seat is installed, the clamping buckle at the bottom of the connecting ring abuts against the clamping ring and slowly moves, after passing through the clamping ring, the clamping buckle is stressed and clamped on the clamping ring, the reverse clamping part for disassembly is blocked by the connecting piece, the risk that the valve seat is disengaged due to vibration displacement during non-manual removal is prevented, and the problem that the valve seat part is too fine to be installed and consumes time is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A perspective view of a ball valve seat static sealing blowout prevention structure is provided for the utility model;

[0017] Figure 2 A ball valve schematic view of a ball valve seat static sealing blowout prevention structure is provided for the utility model;

[0018] Figure 3A valve seat schematic view of a ball valve valve seat static sealing anti-blowing structure is provided in the utility model.

[0019] Figure 4 A snap ring schematic view of a ball valve valve seat static sealing anti-blowing structure is provided in the utility model.

[0020] Legend:

[0021] 1, first valve body; 2, second valve body; 3, valve rod; 4, ball valve; 5, fixed shaft; 6, valve seat; 7, first sealing ring; 8, second sealing ring; 9, first spring; 10, connecting ring; 11, first guide rod; 12, extension ring; 13, buckle; 14, second guide rod; 15, second spring; 16, snap ring; 17, reverse clamping block; 18, first connecting ring; 19, second connecting ring; 20, connecting piece. Specific implementation

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings of the specification of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Reference Figures 1-3 An embodiment provided by the utility model: a ball valve valve seat static sealing anti-blowing structure, including first valve body 1, the left and right sides of first valve body 1 are fixedly connected with second valve body 2, the top of the inner wall of first valve body 1 is rotatably connected with valve rod 3, the bottom of the inner wall of first valve body 1 is rotatably connected with fixed shaft 5, the opposite side of two second valve bodies 2 is provided with valve seat 6, the opposite side of two valve seats 6 is fixedly connected with first sealing ring 7, the opposite side of two valve seats 6 is fixedly connected with first spring 9, the opposite side of two first springs 9 is fixedly connected with connecting ring 10, the opposite side of two connecting rings 10 is fixedly connected with the first guide rod 11 that is evenly distributed, the opposite side of multiple first guide rods 11 on the left and right sides is slidably connected with second guide rod 14, the opposite side of two connecting rings 10 is fixedly connected with extension ring 12, the outer surface of two valve seats 6 and the outer surface of extension ring 12 are fixedly connected with second sealing ring 8, the inner wall of second valve body 2 is provided with quick installation assembly, and the quick installation assembly is used for the quick installation of valve seat 6.

[0024] Specifically, by arranging the connecting ring 10 between the valve seat 6 and the second valve body 2, and arranging the first spring 9, the first guide rod 11 and the second guide rod 14 between the valve seat 6 and the connecting ring 10, the pressure is evenly distributed and buffered when the valve is in use and subjected to the pressure generated by the rotation of the ball valve 4, thereby prolonging the service life of the blowout prevention structure and solving the problem of frequent damage to the valve seat 6 of the ball valve 4.

[0025] With reference to Figure 4 , the quick installation assembly comprises a plurality of buckles 13 fixedly connected with the two connecting rings 10, and the two second valve bodies 2 are fixedly connected with clamping rings 16 on opposite sides of the inner walls thereof, the outer surfaces of the two clamping rings 16 are fixedly connected with uniformly distributed reverse clamping blocks 17, and the inner walls of the two second valve bodies 2 are provided with second springs 15, the opposite sides of the two springs are fixedly connected with first connecting rings 18, and the opposite sides of the two springs are fixedly connected with second connecting rings 19.

[0026] Specifically, by arranging the clamping ring 16 in the inner wall of the second valve body 2, when the valve seat 6 is installed, the buckle 13 at the bottom of the connecting ring 10 abuts against the clamping ring 16 and slowly moves, after passing through the clamping ring 16, the buckle 13 is disengaged from the clamping ring 16, and the reverse buckle 13 part used for disassembly is blocked by the connecting piece 20, thereby preventing the risk of disengagement of the valve seat 6 due to vibration displacement during non-manual disassembly, and solving the problem of time-consuming installation of the valve seat 6 part due to excessive delicacy.

[0027] With reference to Figure 1 , the ball valve 4 is fixedly connected between the valve stem 3 and the fixed shaft 5, the valve stem 3 penetrates through and extends to the top of the first valve body 1, and the valve stem 3 is used to control the rotation of the ball valve 4.

[0028] Specifically, the ball valve 4 is controlled to rotate in the first valve body 1 through the valve stem 3.

[0029] With reference to Figure 2 , the outer surface of the valve seat 6 is in a stepped shape, the first spring 9 is fixed at the outermost stepped plane of the valve seat 6, and the second guide rod 14 is fixed at the innermost stepped plane of the valve seat 6.

[0030] Specifically, the second guide rod 14 is located inside the first spring 9, and the first sealing ring 7 is attached to the ball valve 4 through the cooperation of the two.

[0031] With reference to Figure 3 , the inner wall of the valve seat 6 is in a wave shape structure, which is used to increase the contact area, disperse the friction force and reduce the wear.

[0032] Specifically, by increasing the contact area of the inner wall of the valve seat 6, the wear is reduced, thereby prolonging the service life of the valve seat 6.

[0033] With reference toFigure 4 Two second connecting rings 19 are slidably connected between the opposite sides of the inner walls of the two second valve bodies 2, and two first connecting rings 18 are fixedly connected between the opposite sides of the inner walls of the two second valve bodies 2.

[0034] Specifically, the second connecting ring 19 can move left and right between the clamping ring 16 and the first connecting ring 18 through the second spring 15 arranged between the second connecting ring 19 and the first connecting ring 18.

[0035] Referring to Figure 4 The second connecting ring 19 is located between the clamping ring 16 and the first connecting ring 18.

[0036] Specifically, the clamping ring 16 and the first connecting ring 18 are also located on the left and right sides of the second connecting ring 19, respectively.

[0037] Referring to Figure 4 The opposite sides of the two second connecting rings 19 are fixedly connected with uniformly distributed connecting pieces 20, and the connecting pieces 20 are used to clamp the reverse clamping block 17 to prevent the clasp 13 from moving to the reverse clamping block 17.

[0038] Specifically, the connecting piece 20 is tightly attached between the clamping ring 16, and the connecting piece 20 is moved away from the original position by pushing the second connecting ring 19, so that the clasp 13 can be removed from the reverse clamping block 17.

[0039] Working principle: by setting the inner wall of the valve seat 6 as a wave-shaped structure, the contact area is increased, the friction is dispersed, the wear is reduced, and the first spring 9, the first guide rod 11 and the second guide rod 14 are arranged between the valve seat 6 and the connecting ring 10, the outer surface of the valve seat 6 is stepped, the first spring 9 is fixed at the outermost plane of the valve seat 6, and the second guide rod 14 is fixed at the innermost stepped plane of the valve seat 6, so that in the process of using the valve, when the pressure generated by the rotation of the ball valve 4 is received, the pressure is evenly distributed and buffered, so that the blowout prevention structure can prolong the service life;

[0040] When the valve seat 6 is installed, the clasp 13 at the bottom of the connecting ring 10 is slowly moved against the clamping ring 16, and after passing through the clamping ring 16, the clasp 13 is clamped to the clamping ring 16, and the connecting piece 20 in the inner wall of the second valve body 2 is abutted against the reverse clamping block 17 under the action of the first connecting ring 18, the second connecting ring 19 and the second spring 15, thereby preventing the risk of disengagement of the valve seat 6 due to vibration displacement when not manually removed, and when disassembled, the connecting piece 20 is pushed away to move the clasp 13 to the reverse clamping block 17, and then removed.

[0041] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A blowout-proof structure of a ball valve seat static seal, comprising a first valve body (1), characterized in that: The first valve body (1) is fixedly connected with the second valve body (2) on the left and right sides, the inner wall top of the first valve body (1) is rotatably connected with the valve rod (3), the inner wall bottom of the first valve body (1) is rotatably connected with the fixed shaft (5), the opposite side of the two second valve bodies (2) is provided with the valve seat (6), the opposite side of the two valve seats (6) is fixedly connected with the first sealing ring (7), the opposite side of the two valve seats (6) is fixedly connected with the first spring (9), the opposite side of the two first springs (9) is fixedly connected with the connecting ring (10), the opposite side of the two connecting rings (10) is fixedly connected with the first guide rod (11) which is uniformly distributed, the opposite side of the plurality of first guide rods (11) on the left and right sides is slidably connected with the second guide rod (14), the opposite side of the two connecting rings (10) is fixedly connected with the extension ring (12), the outer surface of the two valve seats (6) and the outer surface of the extension ring (12) are fixedly connected with the second sealing ring (8), the inner wall of the second valve body (2) is provided with the quick installation assembly, and the quick installation assembly is used for quick installation of the valve seat (6).

2. The blowout-proof structure of a static seal of a ball valve seat according to claim 1, characterized in that: The quick installation assembly comprises a plurality of buckles (13), the plurality of buckles (13) and the two connecting rings (10) are fixedly connected, the opposite side of the inner wall of the two second valve bodies (2) is fixedly connected with the clamping ring (16), the outer surface of the two clamping rings (16) is fixedly connected with the reverse clamping block (17) which is uniformly distributed, the inner wall of the two second valve bodies (2) is provided with the second spring (15), the opposite side of the two springs is fixedly connected with the first connecting ring (18), and the opposite side of the two springs is fixedly connected with the second connecting ring (19).

3. The blowout-proof structure of a static seal of a ball valve seat according to claim 1, characterized in that: The valve rod (3) and the fixed shaft (5) are fixedly connected with the ball valve (4), the top of the valve rod (3) penetrates and extends to the top of the first valve body (1), and the valve rod (3) is used for controlling rotation of the ball valve (4).

4. The blowout-proof structure of a static seal of a ball valve seat according to claim 1, characterized in that: The outer surface of the valve seat (6) is in a stepped shape, the first spring (9) is fixed at the outermost side of the valve seat (6), and the second guide rod (14) is fixed at the innermost side of the valve seat (6).

5. The blowout-proof structure of a static seal of a ball valve seat according to claim 1, characterized in that: The inner wall of the valve seat (6) is in a wave shape structure, which is used to increase the contact area, disperse the friction force and reduce the abrasion.

6. The blowout-proof structure of a static seal of a ball valve seat according to claim 2, characterized in that: The opposite side of the two second connecting rings (19) and the inner wall of the two second valve bodies (2) are slidably connected, and the opposite side of the two first connecting rings (18) and the inner wall of the two second valve bodies (2) are fixedly connected.

7. The blowout-proof structure of a static seal of a ball valve seat according to claim 2, characterized in that: The second connecting ring (19) is located between the clamping ring (16) and the first connecting ring (18).

8. The blowout-proof structure of a static seal of a ball valve seat according to claim 2, characterized in that: The opposite side of the two second connecting rings (19) is fixedly connected with the connecting piece (20) which is uniformly distributed, and the connecting piece (20) is used for clamping the reverse clamping block (17) to prevent the buckle (13) from moving to the reverse clamping block (17).

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