CN216344023U - Hydraulic drive gate valve - Google Patents

Abstract

The utility model discloses a hydraulic drive gate valve which comprises a valve body and a gate plate, wherein a hydraulic driver is arranged on the valve body, the hydraulic driver comprises a hydraulic drive execution part arranged inside the valve body and hydraulic power equipment arranged outside the valve body, the hydraulic drive execution part is connected with the gate plate, the hydraulic power equipment controls the movement of the hydraulic drive execution part, and the gate plate is opened or closed through the hydraulic drive execution part. The utility model is more suitable for gate valves used in occasions of poisonous and harmful gases, inflammable and explosive gases and the like, is beneficial to avoiding the defect of high difficulty in field replacement after the detection of the leakage of the filler, and reduces the maintenance cost.

Description

Hydraulic drive gate valve

Technical Field

The utility model relates to the technical field of gate valves, in particular to a hydraulic drive gate valve.

Background

It is known that a gate valve (gate valve) is a shutter plate, the movement direction of the shutter plate is perpendicular to the flow direction, and the gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. Gate valves are sealed by the contact of the valve seat and gate plate, and the sealing surface is usually welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate plate is divided into a rigid gate plate and an elastic gate plate according to the difference of the gate plate.

The existing gate valve generally adopts a trapezoidal thread to connect a driving valve rod, the force of circular motion is transmitted to the valve rod through a rotating nut to do linear motion (up-down linear motion), and finally a gate plate (sealing element) of the gate valve is driven to ascend or descend, so that the purpose of opening or closing the gate valve is achieved. The structure of this kind of mode has been mature application nearly fifty years, go on many years 'practical verification, the difficult point of this structure lies in the friction life problem between valve rod and the packing, through many years' technical improvement, the more effective solution at present is through promoting the technique of packing material self to prolong sealed life, but especially use the gate valve in occasions such as poisonous and harmful gas and easily fire explosive gas, because the packing belongs to wearing parts, no matter what kind of material has wearing and tearing, all there is the life problem, can only prolong sealed life through promoting the packing quality, can not solve sealed problem of leaking (outer leakage) fundamentally, secondly detect that the on-the-spot replacement degree of difficulty is big (need to shut down) after the outer leakage of packing, the replacement process is complicated and with high costs etc., the packing maintenance cost is high, and the valve outer leakage detects the difficulty.

In response to such deficiencies, there is a need for improvements in the art.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects in the prior art, the utility model provides a hydraulic drive gate valve which is more suitable for gate valves used in occasions of poisonous and harmful gases, inflammable and explosive gases and the like, is favorable for avoiding the defect of high difficulty (needing to stop) in field replacement after the detection of the leakage of a filler, and reduces the maintenance cost.

(II) technical scheme to be adopted

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a hydraulic drive gate valve, includes valve body and flashboard, be provided with hydraulic drive on the valve body, hydraulic drive is including setting up the inside hydraulic drive executive component of valve body and setting are in the outside hydraulic power equipment of valve body, hydraulic drive executive component is connected with the flashboard hydraulic power equipment is right hydraulic drive executive component's motion control, through hydraulic drive executive component is right the action of opening or closed state is done to the flashboard.

Preferably, the hydraulic driving execution part comprises a hydraulic cylinder body arranged inside the valve body, the hydraulic cylinder body is connected with the gate plate through a hydraulic push rod, and a piston ring is arranged at one end of the hydraulic push rod extending to the hydraulic cylinder body.

Preferably, the piston ring divides the interior of the hydraulic cylinder into a valve-closing hydraulic chamber and a valve-opening hydraulic chamber.

Preferably, the hydraulic power equipment comprises a pump body, a reversing valve and an operating rod are arranged on the pump body, an oil inlet valve and an oil return valve are arranged on the valve body, the oil inlet valve is connected with the reversing valve through an oil inlet pipeline, the oil return valve is connected with the pump body through an oil return pipeline, and the operating rod controls the connection and disconnection of the oil inlet pipeline and the oil return pipeline communicated with the reversing valve.

Preferably, the pump body adopts a hand oil pump or a reciprocating pump.

Preferably, one oil inlet valve is adopted, the oil inlet valve is fixedly arranged on the upper end face of the valve body, two oil return valves are adopted, and the two oil return valves are fixedly arranged on the upper end face of the valve body.

Preferably, the oil inlet valve is located between the two oil return valves.

Preferably, the valve body comprises a valve seat and a valve cover, and the valve seat and the valve cover are connected together in a welding mode.

Preferably, the valve cover is welded with the hydraulic power equipment, so that the structural integrity is greatly improved, and the occupied space is reduced.

(III) the beneficial effects to be achieved

Compared with the prior art, the utility model has the beneficial effects that:

the hydraulic driver comprises a hydraulic driving execution part arranged in a valve body and hydraulic power equipment arranged outside the valve body, wherein the hydraulic driving execution part is connected with a flashboard, the movement of the hydraulic driving execution part is controlled by the hydraulic power equipment, and the flashboard is opened or closed by the hydraulic driving execution part, so that the flashboard of the existing mechanical transmission type driving gate valve is changed, and the flashboard is driven by a hydraulic driving mode, thereby achieving the purpose of opening and closing the valve.

Secondly, the gate valve with the hydraulic driver arranged on the valve body is more suitable for being used in occasions of poisonous and harmful gas, inflammable and explosive gas and the like, is favorable for avoiding the problems of leakage and safety accidents of the valve caused by old filler, is also favorable for solving the problems of high filler maintenance cost, difficulty in leakage detection of the valve and the like, and can meet the use requirements more.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

In the figure: 1, a valve body; 2, a gate plate; 3, a hydraulic driver; 11, a valve seat; 12, a valve cover; 31, a hydraulically driven actuator; 32, a hydraulic power plant; 311, a hydraulic cylinder; 312, a hydraulic push rod; 313, a piston ring; 314, closing the valve hydraulic cavity; 315, opening the valve hydraulic cavity; 321, a pump body; 322, a reversing valve; 323, a lever; 324, an oil inlet valve; 325, oil return valve; 326, oil inlet line; 327, return line.

Detailed Description

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships in which the products of the present invention are conventionally placed when used, and are merely used for convenience of describing and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the utility model and not to limit the scope of the utility model. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1 and 2, a hydraulic drive gate valve includes a valve body 1 and a gate plate 2, the gate plate 2 is arranged inside the valve body 1, a hydraulic driver 3 is arranged on the valve body 1, the hydraulic driver 3 includes a hydraulic drive executing component 31 arranged inside the valve body 1 and a hydraulic power device 32 arranged outside the valve body 1, the hydraulic power device 32 is connected with the hydraulic drive executing component 31, the hydraulic drive executing component 31 is connected with the gate plate 2, the hydraulic power device 32 controls the movement of the hydraulic drive executing component 31, and the gate plate 2 is opened or closed through the hydraulic drive executing component 31.

In use, the up-and-down movement of the hydraulic driving execution part 31 is controlled by the hydraulic power device 32, and then the hydraulic driving execution part 31 drives the gate plate 2 to move up and down, when the gate plate 2 moves down, the gate plate 2 is in an action state of closing the valve, and when the gate plate 2 moves up, the gate plate 2 is in an action state of opening the valve. The utility model changes the existing mechanical transmission mode to drive the gate plate 2 of the gate valve, and drives the gate plate 2 in a hydraulic driving mode, thereby achieving the purpose of opening and closing the valve.

The first embodiment is as follows: further, as shown in fig. 1 and 2, the hydraulic drive executing component 31 includes a hydraulic cylinder 311 disposed inside the valve body 1, the hydraulic cylinder 311 is connected to the gate 2 through a hydraulic rod 312, the hydraulic rod 312 extends into the hydraulic cylinder 311, and a piston ring 313 is disposed at one end of the hydraulic rod 312 extending into the hydraulic cylinder 311, the piston ring 313 divides the inside of the hydraulic cylinder 311 into a valve-closing hydraulic chamber 314 and a valve-opening hydraulic chamber 315, and in order to improve the sealing between the valve-closing hydraulic chamber 314 and the valve-opening hydraulic chamber 315, a seal ring is disposed on the piston ring 313, and the piston ring 313 is tightly connected to the inner wall of the hydraulic cylinder 311, so that the piston ring 313 moves up and down on the inner wall of the hydraulic cylinder 311, and the sealing between the valve-closing hydraulic chamber 314 and the valve-opening hydraulic chamber 315 can be better improved through the seal ring. Wherein the piston ring 313 in the hydraulic cylinder 311 moves up and down, so that the hydraulic push rod 312 is connected with the gate plate 2, and the purpose of opening and closing the valve is achieved through the up and down movement of the piston ring 313.

Example two: on the basis of the first embodiment, as shown in fig. 1 and fig. 2, further, the hydraulic power device 32 includes a pump body 321, a reversing valve 322 and an operating rod 323 are disposed on the pump body 321, an oil inlet valve 324 and an oil return valve 325 are disposed on the valve body 1, the oil inlet valve 324 is connected to the reversing valve 322 through an oil inlet pipeline 326, the oil return valve 325 is connected to the pump body 321 through an oil return pipeline 327, and the operating rod 323 controls on and off of the oil inlet pipeline 326 and the oil return pipeline 327 communicated with the reversing valve 322. The hydraulic power unit 32 drives the hydraulic oil, and the oil delivery circuit (the oil inlet pipeline 326 and the oil return pipeline 327) of the hydraulic oil is changed through the change-over valve 322, so that the purpose of opening or closing the valve is achieved. In which a hand oil pump or a reciprocating pump is used for the pump body 321. In the present embodiment, one oil inlet valve 324 is adopted, the oil inlet valve 324 is fixedly arranged on the upper end surface of the valve body 1, two oil return valves 325 are adopted, and two oil return valves 325 are fixedly arranged on the upper end surface of the valve body 1, specifically, the oil inlet valve 324 is located between the two oil return valves 325. The piston ring 313 moves up and down by changing the oil inlet/return of the hydraulic oil, so that the gate plate 2 is driven to move up and down to open or close the valve.

In the utility model, the pump body 321 is fixed on the upper end surface of the valve body 1, which is beneficial to reducing the occupied space.

Example three: on the basis of the second embodiment, as shown in fig. 1 and fig. 2, further, the valve body 1 includes a valve seat 11 and a valve cover 12, and the valve seat 11 and the valve cover 12 are connected together by welding, which is beneficial to avoiding any possibility of external leakage. More specifically, the upper end surface of the valve cover 12 is provided with an oil inlet valve 324 and an oil return valve 325, the upper end surface of the valve cover 12 is fixed with a pump body 321, and the lower end surface of the valve cover 12 is welded with a hydraulic cylinder body 311, which is beneficial to completely avoiding the occurrence of external leakage. In this embodiment, the valve cap 12 is welded to the hydraulic power device 32, which greatly improves the structural integrity and reduces the occupied space, specifically, the lower end surface of the pump body 321 is provided with a mounting seat, and the mounting seat is fixedly connected to the valve cap 12 by welding.

The valve has no valve rod, the valve cover adopts a welding structure, and no external leakage point exists, so that the risk of external leakage of the valve is completely avoided, and the environment is not polluted and damaged by the external leakage even if the valve is damaged and cannot be used. Thereby furthest guaranteeing the personal safety of the pipeline operation safety level field operators. The hand oil pump drives the hydraulic oil, and the oil delivery loop of the hydraulic oil is changed through the reversing valve 322, so that the purpose of opening or closing the valve is achieved. The utility model makes up the defect that the structure of the packing is insufficient by technical improvement of the packing in the prior art, and can meet the use requirement better. The gate valve is more suitable for occasions of conveying toxic and harmful gases, inflammable and explosive gases and the like, and avoids the problems of valve leakage and frequent safety accidents caused by old fillers, high filler maintenance cost, difficult valve leakage detection and the like. And the problems of large field replacement difficulty (needing shutdown) after the detection of the leakage of the filler, complex replacement process, high cost and the like can be solved.

It should be noted that, although the above embodiments have been described herein, the utility model is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present patent.

Claims (6)

1. A hydraulic drive gate valve, includes valve body (1) and flashboard (2), its characterized in that: be provided with hydraulic drive ware (3) on valve body (1), hydraulic drive ware (3) are including setting up inside hydraulic drive executive component (31) of valve body (1) and setting are in outside hydraulic power equipment (32) of valve body (1), hydraulic drive executive component (31) are connected with flashboard (2) hydraulic power equipment (32) are right the motion control of hydraulic drive executive component (31), through hydraulic drive executive component (31) are right the action of opening or closed state is done to flashboard (2).

2. A hydraulically driven gate valve as claimed in claim 1, wherein: the hydraulic driving execution part (31) comprises a hydraulic cylinder body (311) arranged inside the valve body (1), the hydraulic cylinder body (311) is connected with the gate plate (2) through a hydraulic push rod (312), and one end, extending to the hydraulic cylinder body (311), of the hydraulic push rod (312) is provided with a piston ring (313).

3. A hydraulically driven gate valve as claimed in claim 2, wherein: the piston ring (313) divides the interior of the hydraulic cylinder body (311) into a valve-closing hydraulic cavity (314) and a valve-opening hydraulic cavity (315).

4. A hydraulically driven gate valve as claimed in claim 1, wherein: the hydraulic power equipment (32) comprises a pump body (321), a reversing valve (322) and an operating rod (323) are arranged on the pump body (321), an oil inlet valve (324) and an oil return valve (325) are arranged on the valve body (1), the oil inlet valve (324) is connected with the reversing valve (322) through an oil inlet pipeline (326), the oil return valve (325) is connected with the pump body (321) through an oil return pipeline (327), and the operating rod (323) controls the on-off of the oil inlet pipeline (326) and the oil return pipeline (327) of the reversing valve (322) in communication.

5. A hydraulically actuated gate valve as claimed in claim 4, wherein: the pump body (321) adopts a hand oil pump or a reciprocating pump.

6. A hydraulically actuated gate valve as claimed in claim 1 or 2 or 3 or 4 or 5, wherein: the valve body (1) comprises a valve seat (11) and a valve cover (12), wherein the valve seat (11) and the valve cover (12) are connected together in a welding mode.

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