Inclined valve rod type high-pressure stop valve

Abstract

The utility model relates to the technical field of stop valves, and discloses an inclined valve rod type high-pressure stop valve which comprises a valve body, a liquid inlet is formed in one end of the valve body, a liquid outlet is formed in the other end of the valve body, a valve clack is installed in the top end of the valve body in a sliding mode, the valve clack is matched with the top end of the liquid inlet, and a valve rod is installed on the valve clack. The top of the valve clack is connected with a valve rod in a sliding mode, and an extrusion mechanism is arranged between the valve clack and the valve rod. When the valve body is used, liquid in the liquid inlet can smoothly flow to the liquid outlet by moving the valve clack, and in order to solve the problems that under the high-pressure condition, the static friction force between the screw and the valve body is large, and the hand wheel is inconvenient to rotate to drive the valve clack to move, the extrusion mechanism is used for replacing thread pressing; the valve clack is tightly pressed at the top end of the liquid inlet to close the liquid inlet, high pressure borne by the valve clack is borne by the extrusion mechanism, and the screw rod and the valve rod can rotate easily under the condition that the screw rod and the valve rod are not subjected to pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stop valve especially relates to a high pressure stop valve of inclined valve rod. BACKGROUND

[0002] The high pressure stop valve is a kind of key valve device for controlling high pressure fluid on-off, mainly applied to the pipeline system of petroleum, chemical industry, electric power and other industries. Its structure is usually composed of valve body, valve cover, valve clapper, valve rod and sealing assembly, made of stainless steel, alloy steel and other high-pressure-resistant materials, to ensure the stability under the pressure working condition of 20MPa or more.

[0003] The inclined rod type high pressure stop valve is a special valve optimized on the basis of traditional stop valve, and its core feature is that valve rod and valve clapper are at a certain angle, and opening and closing are realized by inclined movement track. This structure effectively reduces the friction resistance between valve rod and packing, reduces the operation torque, and simultaneously utilizes medium pressure to assist sealing, significantly improves the sealing reliability under high pressure working condition.

[0004] The existing stop valve mainly drives valve rod to move by rotating hand wheel, makes conical valve clapper and valve seat closely adhere, realizes the accurate cutting of fluid. In the state that valve clapper is just opened, the static friction force between screw rod and valve body is great, so the force required for hand wheel rotation is also great. At this time, it is difficult to rotate hand wheel by manpower. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high pressure stop valve of inclined valve rod to solve the above-mentioned deficiencies in prior art.

[0006] Technical scheme: a high pressure stop valve of inclined valve rod, comprising a valve body, one end of the valve body is provided with a liquid inlet, the other end of the valve body is provided with a liquid outlet, the top end inside of the valve body is slidably installed with a valve clapper, the valve clapper is matched with the top end of the liquid inlet, the valve clapper top is slidably connected with a valve rod, and an extrusion mechanism is arranged between the valve clapper and the valve rod.

[0007] Further description of the above technical scheme: the valve body top end both sides are fixedly installed with support rods, the top of two support rods is fixedly installed with a connector, the connector is threadedly connected with a screw rod, and the bottom end of the screw rod is rotatably connected with the top end of the valve rod.

[0008] Further description of the above technical scheme: a limiting piece is fixedly installed on the valve rod, and one end of the limiting piece is slidably connected with the support rod.

[0009] Further description of the above technical scheme: the top end of the screw rod is fixedly installed with a hand wheel.

[0010] As a further description of the above technical scheme: the extrusion mechanism comprises a pressing base, the pressing base is arranged at the top of the valve disc, the pressing base is in sliding fit with the valve rod, a pressing plate is slidably arranged on the valve rod, the pressing plate is arranged at the top of the pressing base, a plurality of connecting rods are fixedly connected between the pressing base and the pressing plate, the plurality of connecting rods are in sliding fit with the valve body, cams are rotatably arranged on the two sides of the limiting piece, and levers are fixedly arranged on the two cams.

[0011] As a further description of the above technical scheme: the valve body is provided with sliding seats fixedly arranged at the two sides of the top end of the valve body, limiting rods are slidably connected to the two sliding seats, and springs are fixedly connected between the limiting rods and the sliding seats.

[0012] As a further description of the above technical scheme: the valve disc is fixedly provided with a sealing seat ring.

[0013] As a further description of the above technical scheme: the valve body is provided with a plurality of connecting holes formed at the two ends of the valve body.

[0014] Beneficial effects: when the valve body is used, the liquid in the liquid inlet can flow smoothly to the liquid outlet by moving the valve disc, in order to avoid the problem that the static friction between the screw rod and the valve body is large under high pressure, and the hand wheel is not convenient to rotate to drive the valve disc to move, the extrusion mechanism is used to replace the threaded compression, so that the valve disc is tightly compressed at the top end of the liquid inlet, the liquid inlet is closed, the high pressure on the valve disc is borne by the extrusion mechanism, and the screw rod and the valve rod can be easily rotated under the condition that they are not pressed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of the inclined valve rod type high-pressure stop valve is provided.

[0016] Figure 2 A three-dimensional sectional structure schematic view of the inclined valve rod type high-pressure stop valve is provided.

[0017] Figure 3 A front view sectional structure schematic view of the inclined valve rod type high-pressure stop valve is provided.

[0018] Figure 4 A three-dimensional structure schematic view of the hand wheel, the screw rod and the valve rod of the inclined valve rod type high-pressure stop valve is provided.

[0019] Figure 5 A three-dimensional structure schematic view of the valve rod, the valve disc and the pressing base of the inclined valve rod type high-pressure stop valve is provided.

[0020] Legend:

[0021] 1, valve body; 2, liquid inlet; 3, liquid outlet; 4, valve; 5, valve stem; 6, support rod; 7, connector; 8, screw; 9, limit; 10, hand wheel; 11, pressure seat; 12, pressure plate; 13, connecting rod; 14, cam; 15, lever; 16, slide; 17, limit rod; 18, spring; 19, sealing seat ring; 20, connecting hole. DETAILED DESCRIPTION

[0022] In order to make the technical scheme of the utility model more clear, the utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0023] Reference Figures 1-5 A kind of high-pressure stop valve of inclined valve stem, including valve body 1, one end of the valve body 1 is provided with liquid inlet 2, the other end of the valve body 1 is provided with liquid outlet 3, the top end inside of the valve body 1 is slidably installed with valve 4, the valve 4 is compatible with the top end of the liquid inlet 2, the valve 4 top is slidably connected with valve stem 5, and the valve 4 is provided with extrusion mechanism between the valve stem 5;When using valve body 1, by moving valve 4 to make the liquid in liquid inlet 2, it can smoothly flow to liquid outlet 3, in order to avoid the problem that the static friction between screw 8 and valve body 1 is large under high pressure, inconvenient to rotate hand wheel 10 to move valve 4, the device is extruded by extrusion mechanism instead of thread compression, to make valve 4 tightly compressed in the top end of liquid inlet 2, close liquid inlet 2, the high pressure received by valve 4 is borne by extrusion mechanism, screw 8 and valve stem 5 can be easily rotated under pressure.

[0024] As a preferred technical scheme of the embodiment, the top end of the valve body 1 is fixedly installed with support rod 6 on both sides, the top of the two support rods 6 is fixedly installed with connector 7, the connector 7 is threadedly connected with screw 8, and the bottom end of the screw 8 is rotatably connected with the top end of the valve stem 5;When rotating screw 8, screw 8 is lifted on connector 7, drives valve stem 5 and valve 4 to move, so that liquid inlet 2 is communicated with liquid outlet 3.

[0025] As a preferred technical scheme of the embodiment, the valve stem 5 is fixedly installed with limit 9, and one end of the limit 9 is slidably connected with the support rod 6;The stable movement of valve stem 5 and valve 4 is ensured by the sliding connection of limit 9 and one of the support rods 6, to avoid the deflection of valve stem 5 and valve stem 5.

[0026] As a preferred technical scheme of the embodiment, the top end of the screw 8 is fixedly installed with hand wheel 10;Screw 8 is conveniently rotated by hand wheel 10.

[0027] As the preferred technical scheme of the embodiment, the pressing mechanism comprises a pressing seat 11 arranged on the top of the valve disc 4, the pressing seat 11 is in sliding fit with the valve rod 5, a pressing plate 12 is slidingly arranged on the top of the pressing seat 11, a plurality of connecting rods 13 are fixedly connected between the pressing seat 11 and the pressing plate 12, the connecting rods 13 are in sliding fit with the valve body 1, cams 14 are rotatably arranged on the two sides of the limiting piece 9, and levers 15 are fixedly arranged on the two cams 14; when the valve disc 4 is pressed and fixed, the tip of the lever 15 is brought into contact with the pressing plate 12 by rotating the lever 15, the pressing plate 12 is pressed downward, the pressing seat 11 is driven to press the valve disc 4 downward through the connecting rods 13, since the valve disc 4 is in sliding fit with the valve rod 5, the valve rod 5 is not subjected to pressure when the valve disc 4 is pressed and fixed by the pressing seat 11, when it is needed to open the valve disc 4, the tip of the cam 14 is away from the pressing plate 12 by rotating the lever 15, the supporting force on the pressing plate 12 disappears, the pressing force of the pressing seat 11 on the valve disc 4 decreases, and the valve disc 4 can be moved by rotating the valve rod 5, and since the valve rod 5 is not subjected to additional force, the valve disc 4 is relatively easy to rotate.

[0028] As the preferred technical scheme of the embodiment, the valve body 1 is provided with sliding seats 16 fixedly arranged on the two sides of the top end of the valve body 1, limiting rods 17 are slidingly arranged on the two sliding seats 16, and springs 18 are fixedly connected between the limiting rods 17 and the sliding seats 16; the tip of the limiting rod 17 is engaged with the lever 15, and the lever 15 is limited by the limiting rod 17 when the valve disc 4 is pressed, so that the stability of the valve disc 4 is ensured.

[0029] As the preferred technical scheme of the embodiment, the valve disc 4 is provided with a sealing seat ring 19 fixedly arranged thereon; the sealing seat ring 19 is used to increase the sealing performance of the connection between the valve disc 4 and the liquid inlet 2.

[0030] As the preferred technical scheme of the embodiment, the valve body 1 is provided with a plurality of connecting holes 20 formed in the two ends of the valve body 1; the valve body 1 is arranged at a desired position through the connecting holes 20.

[0031] The above embodiments only express several implementation manners of the utility model, and the description is relatively specific and detailed, but it cannot be understood as the limitation of the patent scope of the utility model. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A high-pressure angle lever globe valve comprising a valve body (1), characterized in that, One end of the valve body (1) is provided with a liquid inlet (2), the other end of the valve body (1) is provided with a liquid outlet (3), the top end of the valve body (1) is slidably installed with a valve clack (4), the valve clack (4) is matched with the top end of the liquid inlet (2), the valve clack (4) is slidably connected with a valve rod (5), and the valve clack (4) is provided with an extrusion mechanism.

2. A high-pressure angle lever globe valve according to claim 1, characterized in that Both sides of the top end of the valve body (1) are fixedly installed with a support rod (6), the top of the two support rods (6) is fixedly installed with a connecting head (7), the connecting head (7) is threadedly connected with a screw rod (8), and the bottom end of the screw rod (8) is rotatably connected with the top end of the valve rod (5).

3. A high pressure angle valve stem globe valve according to claim 2, wherein The valve rod (5) is fixedly installed with a limiting piece (9), one end of the limiting piece (9) is slidably connected with the support rod (6).

4. A high pressure angle valve stem globe valve according to claim 3, wherein The top end of the screw rod (8) is fixedly installed with a hand wheel (10).

5. A high pressure angle valve stem globe valve according to claim 4, wherein The extrusion mechanism comprises a pressing seat (11), the pressing seat (11) is arranged on the top of the valve clack (4), the pressing seat (11) is slidably connected with the valve rod (5), the valve rod (5) is slidably installed with a pressing plate (12), the pressing plate (12) is arranged on the top of the pressing seat (11), a plurality of connecting rods (13) are fixedly connected between the pressing seat (11) and the pressing plate (12), the plurality of connecting rods (13) are slidably connected with the valve body (1), the limiting piece (9) is rotatably installed with a cam (14) on both sides, and the two cams (14) are fixedly installed with a lever (15).

6. A high pressure angle valve stem globe valve according to claim 5, wherein Both sides of the top end of the valve body (1) are fixedly installed with a sliding seat (16), the two sliding seats (16) are slidably connected with a limiting rod (17), and the limiting rod (17) is fixedly connected with a spring (18) between the sliding seat (16).

7. A high pressure angle valve stem globe valve according to claim 6, wherein The valve clack (4) is fixedly installed with a sealing seat ring (19).

8. A high pressure angle valve stem globe valve according to claim 1, wherein Multiple connecting holes (20) are formed in both ends of the valve body (1).

Images