Energy storage type telescopic hydraulic slow-closing check butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, in particular to an energy storage type telescopic hydraulic slow-closing check butterfly valve, which is characterized in that one end of a valve body is fixedly connected with a control frame, one end of a valve rod extends out of the valve body and is rotatably connected with the control frame, a hydraulic cylinder is rotatably arranged on the control frame, and a rotating sleeve is sleeved on the valve rod; the outer side of the rotating sleeve is fixedly connected with a deflector rod in the direction perpendicular to the axis, and a piston rod of the hydraulic cylinder is fixedly connected with a connecting rod and is hinged to the deflector rod through the connecting rod; the hydraulic cylinder is connected with an energy accumulator through a control valve, and the energy accumulator is connected with a hydraulic station. Oil is supplied to the hydraulic cylinder through the energy accumulator, then the valve rod and the valve plate are driven by the hydraulic cylinder to rotate, opening and closing of the valve are achieved, and compared with a heavy hammer type butterfly valve, occupied space is small, and noise is low.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and more specifically to an energy storage type telescopic hydraulic slow-closing check butterfly valve. Background Art

[0002] Existing hydraulically controlled slow-closing check butterfly valves mostly adopt a heavy hammer structure, which is characterized by accumulating potential energy by a lifted heavy hammer at ordinary times. At the moment of emergency closing, the heavy hammer falls quickly, the potential energy is released, the kinetic energy increases, and the butterfly plate is driven to close quickly. The advantages are reliable energy accumulation and reliable and stable closing speed, but it occupies a large space (the heavy hammer's rotation radius must be met) and the heavy hammer is heavy. During operation, if the transmission chain is loose, it will cause large vibration.

[0003] Therefore, it is necessary to improve the prior art. Utility Model Content

[0004] In order to overcome the deficiencies in the prior art, an energy storage type telescopic hydraulic slow-closing check butterfly valve is provided, which is driven by the energy stored in an energy storage tank and has a small size and light weight.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An energy storage type telescopic hydraulic slow closing check butterfly valve comprises a valve body, a valve stem and a valve plate, wherein the valve stem is rotatably arranged on the valve body, and the valve plate is fixedly arranged on the valve stem and matched with the medium hole of the valve body; one end of the valve body is fixedly connected with a control frame, one end of the valve stem extends out of the valve body and is rotatably connected with the control frame, a hydraulic cylinder is rotatably arranged on the control frame, a rotating sleeve is sleeved on the valve stem, the rotating sleeve and the valve stem are circumferentially limited by a flat key, a lever is fixedly connected to the outer side of the rotating sleeve in a direction perpendicular to the axis, and the piston rod of the hydraulic cylinder is fixedly connected with a connecting rod and is hinged with the driving rod through the connecting rod;

[0007] The hydraulic cylinder is connected to an accumulator via a control valve, and the accumulator is connected to a hydraulic station;

[0008] A travel switch is arranged on the outer side of the control frame, and a control rod matched with the travel switch is fixedly connected to one end of the valve stem.

[0009] Preferably, an electromagnetic throttle valve is provided between the hydraulic cylinder and the accumulator, and the electromagnetic throttle valve is electrically connected to the electric control cabinet.

[0010] Preferably, four travel switches are provided and are electrically connected to the electric control cabinet respectively, and the four travel switches correspond to four states: the valve plate is fully opened, the valve plate is 90% open, the valve plate is 90% closed, and the valve plate is fully closed.

[0011] Preferably, the control rods are provided with two and are arranged at an angle of 90°. The two travel switches corresponding to the valve plate being fully open and the valve plate being 90% open are located on one side of the valve stem and cooperate with the same control rod, and the two travel switches corresponding to the valve plate being 90% closed and the valve plate being fully closed are located on the other side of the valve stem and cooperate with another control rod.

[0012] Preferably, a dial is provided on the control frame, and the control rod cooperates with the dial.

[0013] Preferably, the valve body comprises a fixed valve body and a telescopic valve body, the telescopic valve body is slidably arranged on the fixed valve body, a sealing member is arranged between the telescopic valve body and the fixed valve body, and a distance adjustment mechanism is arranged between the telescopic valve body and the fixed valve body.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model supplies oil to the hydraulic cylinder through the accumulator, and then drives the valve stem and the valve plate to rotate through the hydraulic cylinder to realize the opening and closing of the valve. Compared with the heavy hammer type butterfly valve, it occupies less space and has less noise.

[0016] 2. The utility model is provided with four travel switches corresponding to the four states of the valve plate fully open, the valve plate open 90%, the valve plate closed 90%, and the valve plate fully closed. When the valve plate is opened or closed to 90%, the valve plate is slowly opened or closed by changing the opening of the throttle valve, thereby achieving the purpose of eliminating pipeline water hammer.

[0017] 3. The utility model is also provided with a dial, which can indicate the opening angle of the valve plate by cooperating with the control rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 2 This is a side view of the structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the telescopic valve body structure.

[0022] In the figure: 1-valve body, 2-valve stem, 3-valve plate, 4-medium hole, 5-control frame, 6-hydraulic cylinder, 7-rotating sleeve, 8-shift rod, 9-connecting rod, 10-electric control cabinet, 11-accumulator, 12-hydraulic station, 13-control rod, 14-travel switch, 15-dial, 16-telescopic valve body, 17-seal, 18-distance adjustment mechanism. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 3 As shown, an energy storage telescopic hydraulic slow-closing check butterfly valve comprises a valve body 1, a valve stem 2 and a valve plate 3. The valve stem 2 is rotatably arranged on the valve body 1, and the valve plate 3 is fixedly arranged on the valve stem 2 and cooperates with the medium hole 4 of the valve body 1. By rotating the valve stem 2, the valve plate 3 is driven to rotate, thereby realizing the conduction or cutting off of the medium hole 4.

[0025] One end of the valve body 1 is fixedly connected to a control frame 5, one end of the valve stem 2 extends out of the valve body 1 and is rotatably connected to the control frame 5, a hinged rod is fixedly connected to the middle of the hydraulic cylinder 6, and is rotatably arranged on the control frame 5 through the hinged rod, a rotating sleeve 7 is sleeved on the valve stem 2, and the rotating sleeve 7 and the valve stem 2 are circumferentially limited by a flat key, that is, when the rotating sleeve 7 rotates, the valve stem 2 can be driven to rotate synchronously. A lever 8 is fixedly connected to the outer side of the rotating sleeve 7 in a direction perpendicular to the axis, and a connecting rod 9 is fixedly connected to the piston rod of the hydraulic cylinder 6 and is hinged to the lever 8 through the connecting rod 9. The telescopic movement of the hydraulic cylinder 6 drives the connecting rod 9 to move synchronously, and then the rotating sleeve 7, the valve stem 2, and the valve plate 3 are driven to rotate synchronously through the lever 8.

[0026] In order to control the state of the hydraulic cylinder 6, the hydraulic cylinder 6 is connected to the accumulator 11 through a control valve. The control valve can be a three-position four-way solenoid valve. The accumulator 11 is connected to the hydraulic station 12. The accumulator 11 is supplied with oil through the hydraulic station 12, and then the accumulator 11 releases energy to push the hydraulic cylinder 6 to do work. An electromagnetic throttle valve is provided between the hydraulic cylinder 6 and the accumulator 11. The throttle valve controls the flow of hydraulic oil to achieve control of the extension and retraction speed of the hydraulic cylinder 6. The electromagnetic throttle valve is electrically connected to the electric control cabinet 10 and is controlled by the electric control cabinet 10.

[0027] A travel switch 14 is arranged outside the control frame 5. Four travel switches 14 are arranged and are electrically connected to the electric control cabinet 10 respectively. The four travel switches 14 correspond to four states: the valve plate 3 is fully opened, the valve plate 3 is opened 90%, the valve plate 3 is closed 90%, and the valve plate 3 is fully closed.

[0028] One end of the valve stem 2 is fixedly connected with a control rod 13 that cooperates with a travel switch 14. Two control rods 13 are provided and are arranged at an angle of 90°. The two travel switches 14 corresponding to the fully opened state of the valve plate 3 and the 90% opened state of the valve plate 3 are located on one side of the valve stem 2 and cooperate with the same control rod 13. In the opening stroke of the valve plate 3, when the control rod 13 contacts the travel switch corresponding to the 90% opened state of the valve plate 3, the electromagnetic throttle valve is controlled by the electric control cabinet 10 to reduce the opening, so that the valve plate 3 is slowly opened to the maximum state.

[0029] Two travel switches 14 corresponding to the 90% closing state of the valve plate 3 and the fully closed state of the valve plate 3 are located on the other side of the valve stem 2 and cooperate with another control rod 13. In the closing stroke of the valve plate 3, when the control rod 13 contacts the travel switch 14 corresponding to the 90% closing state of the valve plate 3, the electromagnetic throttle valve is controlled by the electric control cabinet 10 to reduce the opening, so as to realize the slow closing of the valve plate 3 to eliminate the water hammer in the pipeline.

[0030] A dial plate 15 is provided on the control frame 5, and the control rod 13 cooperates with the dial plate 15 to facilitate observation of the opening angle of the valve plate 3. In order to facilitate connection with the pipeline, the valve body 1 includes a fixed valve body and a telescopic valve body 16, and the telescopic valve body 16 is slidably arranged on the fixed valve body. A seal 17 is provided between the telescopic valve body 16 and the fixed valve body, and the sealing structure can adopt the existing technology. A distance adjustment mechanism 18 is provided between the telescopic valve body 16 and the fixed valve body 16, and the distance adjustment mechanism 18 can be locked by adjusting the screw and the nut.

[0031] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. An energy storage type telescopic hydraulic slow-closing check butterfly valve, comprising a valve body (1), a valve stem (2) and a valve plate (3), wherein the valve stem (2) is rotatably arranged on the valve body (1), and the valve plate (3) is fixedly arranged on the valve stem (2) and cooperates with a medium hole (4) of the valve body (1); characterized in that: One end of the valve body (1) is fixedly connected to a control frame (5), one end of the valve stem (2) extends out of the valve body (1) and is rotatably connected to the control frame (5), a hydraulic cylinder (6) is rotatably arranged on the control frame (5), a rotating sleeve (7) is sleeved on the valve stem (2), the rotating sleeve (7) and the valve stem (2) are circumferentially limited by a flat key, a lever (8) is fixedly connected to the outer side of the rotating sleeve (7) in a direction perpendicular to the axis, and a piston rod of the hydraulic cylinder (6) is fixedly connected to a connecting rod (9) and is hinged to the lever (8) via the connecting rod (9); The hydraulic cylinder (6) is connected to an accumulator (11) via a control valve, and the accumulator (11) is connected to a hydraulic station (12); A travel switch (14) is arranged on the outside of the control frame (5), and a control rod (13) cooperating with the travel switch (14) is fixedly connected to one end of the valve stem (2).

2. The energy storage type telescopic hydraulic slow closing check butterfly valve according to claim 1 is characterized in that: An electromagnetic throttle valve is provided between the hydraulic cylinder (6) and the accumulator (11), and the electromagnetic throttle valve is electrically connected to the electric control cabinet (10).

3. The energy storage type telescopic hydraulic slow closing check butterfly valve according to claim 2 is characterized in that: Four travel switches (14) are provided and are electrically connected to the electric control cabinet (10) respectively. The four travel switches (14) respectively correspond to four states: the valve plate (3) is fully open, the valve plate (3) is 90% open, the valve plate (3) is 90% closed, and the valve plate (3) is fully closed.

4. The energy storage type telescopic hydraulic slow closing check butterfly valve according to claim 3 is characterized in that: The control rods (13) are provided with two and are arranged at an angle of 90°. The two travel switches (14) corresponding to the valve plate (3) being fully open and the valve plate (3) being 90% open are located on one side of the valve stem (2) and cooperate with the same control rod (13). The two travel switches (14) corresponding to the valve plate (3) being 90% closed and the valve plate (3) being fully closed are located on the other side of the valve stem (2) and cooperate with another control rod (13).

5. The energy storage type telescopic hydraulic slow closing check butterfly valve according to claim 1 is characterized in that: The control frame (5) is provided with a dial (15), and the control rod (13) cooperates with the dial (15).

6. The energy storage type telescopic hydraulic slow closing check butterfly valve according to claim 1 is characterized in that: The valve body (1) comprises a fixed valve body and a telescopic valve body (16); the telescopic valve body (16) is slidably arranged on the fixed valve body; a sealing member (17) is arranged between the telescopic valve body (16) and the fixed valve body; and a distance adjustment mechanism (18) is arranged between the telescopic valve body (16) and the fixed valve body.

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