Protection device for electric actuating mechanism of valve

Abstract

The utility model discloses a valve electric actuating mechanism protection device, and particularly relates to the technical field of valves, which comprises a base, an electric actuating mechanism shell is mounted at the top end of the base, a rotating rod is connected to one side of the top end of the electric actuating mechanism shell, a hand wheel is mounted at one end of the rotating rod, and a toothed bar is coaxially arranged in the middle of the rotating rod. A shaft seat is connected to the joint of the rotating rod and the electric actuating mechanism shell in a sleeving mode and connected with a locking assembly connected to the rotating rod in a sleeving mode, a detection pipe is connected to one side of the bottom end of the electric actuating mechanism shell and connected with a liquid drainage pipe, a detection assembly is installed at the end of the detection pipe, and a plurality of shallow grooves are formed in the shaft seat. A deep groove is formed in one side of each shallow groove. The electric actuating mechanism effectively solves the problems that a hand wheel of an existing electric actuating mechanism is prone to collision, valve opening is out of control, leakage may damage equipment, and stability and safety of operation of the electric actuating mechanism are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field more specifically, the utility model relates to a valve electric actuator protection device. BACKGROUND

[0002] The electric valve action torque is bigger than the ordinary valve, and the electric valve switch action speed can be adjusted, the result is simple, easy to maintain, and can be used for controlling air, water, steam, various corrosive media, mud, oil and radioactive medium fluid. But the traditional pneumatic valve action process is not easy to damage due to the buffering characteristics of gas itself, but must have a gas source, and its control system is more complex than the electric valve. The electric valve is mainly composed of a valve body and an electric actuator.

[0003] Because the electric actuator is usually triggered by rotating the hand wheel to adjust the opening of the valve, and then automatically controlling the opening of the valve by the control system, so that the hand wheel is installed outside, and when the hand wheel is outside, it is likely to rotate when it is hit by an indefinite factor, so that the opening of the valve changes, thereby affecting the opening control of the valve and causing the flow of the medium to change.

[0004] Therefore, the present application provides a valve electric actuator protection device. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a valve electric actuator protection device to solve the problems in the above background art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a valve electric actuator protection device, comprising a base, the base top end is installed with electric actuator shell, electric actuator shell top end one side is connected with the rotary rod, the rotary rod one end is installed with hand wheel, and the rotary rod middle part is coaxially provided with the tooth rod, the rotary rod and electric actuator shell connection place are sleeved with the axle seat, the axle seat is connected with the locking assembly of sleeve joint on the rotary rod, electric actuator shell bottom end one side is connected with the detection tube, the detection tube is connected with the liquid discharge pipe, and the detection tube end part is installed with detection assembly.

[0007] Preferably, a plurality of shallow grooves are formed on the axle seat, and a deep groove is formed on one side of each shallow groove.

[0008] Preferably, the locking assembly comprises a sleeve disc, a tooth hole, a sliding slot, a sliding block, a spring and a locking rod, the sleeve disc is provided with a tooth hole in the middle, the tooth hole is sleeved with the tooth rod, a plurality of sliding slots are formed on the sleeve disc, a sliding block is slidably installed in each sliding slot, a spring is fixedly connected between each sliding block and the axle seat, and a locking rod is welded on the sleeve disc outside each sliding slot.

[0009] Preferably, the plurality of locking rods are arranged in a ring shape, and when each locking rod is inserted into the shallow groove, the tooth rod is in contact with the inner wall of the tooth hole, and when each locking rod is inserted into the deep groove, the inner wall of the tooth hole is in sliding fit with the rotating rod.

[0010] Preferably, the detection assembly comprises an electric push rod, a piston and a pressure sensor, the electric push rod is installed at one end of the detection tube, the piston is installed at the telescopic end of the electric push rod, the piston is in sliding connection with the inner wall of the detection tube, and the pressure sensor is installed on the piston.

[0011] Preferably, the drainage pipe is vertically connected to the bottom of one end of the detection tube, and the inner diameter of the drainage pipe is smaller than the thickness of the piston.

[0012] The technical effects and advantages of the utility model are as follows:

[0013] Through the setting of the locking assembly, when the locking rod is inserted into the shallow groove of the shaft seat, the tooth hole and the tooth rod are closely engaged, the rotation of the rotating rod is limited, the hand wheel is prevented from changing the valve opening degree due to external force impact, the stable operation of the valve under the set working condition is ensured, and the reliability of the electric actuator in controlling the valve opening degree is greatly improved.

[0014] Through the detection assembly, the water pressure change caused by leakage at the connection between the base and the valve can be sensitively perceived, once the pressure is detected to rise, the electric push rod rapidly acts to push the piston to move, so that the drainage pipe is communicated with the detection tube, the leaked medium is timely discharged, the medium is effectively prevented from being immersed into the internal part of the electric actuator, the risk of short circuit of the electronic components is reduced, and the safety of the equipment is effectively ensured.

[0015] Through the setting of the locking assembly, the operation is facilitated, the locking and unlocking can be realized by pulling the sleeve disc, rotating and aligning the shallow groove and then loosening, the operation is simple and efficient, complex tools are not needed for assistance, the working difficulty and labor intensity of the operator are reduced, and the equipment maintenance efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model.

[0017] Figure 2 It is a locking assembly connecting structure schematic view of the utility model.

[0018] Figure 3 It is a structure schematic view of the locking assembly of the utility model.

[0019] Figure 4 It is a shaft seat and rotating rod connecting structure schematic view of the utility model.

[0020] Figure 5 It is a structure schematic view of the detection assembly of the utility model.

[0021] The attached diagram is labeled as follows: 1. Base; 2. Electric actuator housing; 3. Shaft seat; 4. Rotating rod; 5. Handwheel; 6. Locking assembly; 601. Sleeve disc; 602. Toothed hole; 603. Slide groove; 604. Slider; 605. Spring; 606. Locking rod; 7. Detection tube; 8. Drain pipe; 9. Detection assembly; 901. Electric push rod; 902. Piston; 903. Pressure sensor; 10. Toothed rod; 11. Shallow groove; 12. Deep groove. Detailed Implementation

[0022] 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.

[0023] As attached Figures 1-5 The illustrated valve electric actuator protection device includes a base 1, an electric actuator housing 2 mounted on the top of the base 1, a rotating rod 4 connected to one side of the top of the electric actuator housing 2, a handwheel 5 mounted on one end of the rotating rod 4, and a toothed rod 10 coaxially arranged in the middle of the rotating rod 4. A bearing 3 is sleeved at the connection between the rotating rod 4 and the electric actuator housing 2, and a locking component 6 sleeved on the rotating rod 4 is connected to the bearing 3. A detection tube 7 is connected to one side of the bottom of the electric actuator housing 2, a drain pipe 8 is connected to the detection tube 7, and a detection component 9 is mounted at the end of the detection tube 7.

[0024] In specific implementation, by inserting the locking rod 606 in the locking assembly 6 into the shallow groove 11, the toothed hole 602 can mesh with the toothed rod 10. Since the locking rod 606 is restricted by the shallow groove 11 and cannot rotate, the rotation of the rotating rod 4 is also locked. When the handwheel 5 is hit by an external force, it is difficult to rotate because the rotating rod 4 is locked, thus preventing the valve opening from changing due to external forces. This protects the operation of the electric actuator and ensures that the valve can flow through the medium at the set opening. When leakage occurs at the connection between the base 1 and the valve, the detection tube 7 can detect the overflowing water. When water pressure is detected in the detection tube 7, the detection assembly 9 opens the drain pipe 8 and automatically drains the water, thus preventing water from entering the electric actuator and causing a short circuit in the internal electronic components, thereby further protecting the electric actuator.

[0025] The bearing seat 3 has multiple shallow grooves 11, and each shallow groove 11 has a deep groove 12 on one side.

[0026] The locking assembly 6 comprises a sleeve disc 601, a tooth hole 602, a sliding groove 603, a sliding block 604, a spring 605 and a locking rod 606, the middle of the sleeve disc 601 is provided with the tooth hole 602, the tooth hole 602 is sleeved with the tooth rod 10, a plurality of sliding grooves 603 are formed in the sleeve disc 601, the sliding block 604 is slidably installed in each sliding groove 603, the spring 605 is fixedly connected between each sliding block 604 and the shaft seat 3, and the locking rod 606 is welded to the sleeve disc 601 outside each sliding groove 603.

[0027] The plurality of locking rods 606 are arranged in a ring shape, when each locking rod 606 is inserted into the shallow groove 11, the tooth rod 10 is in contact with the inner wall of the tooth hole 602, and when each locking rod 606 is inserted into the deep groove 12, the inner wall of the tooth hole 602 is in sliding connection with the rotating rod 4.

[0028] In specific implementation, when the rotating rod 4 needs to be locked, the sleeve disc 601 is pulled and moved close to the hand wheel 5, so that each spring 605 is elongated, each locking rod 606 is pulled out of the deep groove 12, then the sleeve disc 601 is rotated, so that each locking rod 606 is aligned with the corresponding shallow groove 11, the sleeve disc 601 is loosened, the spring 605 is contracted, so that each locking rod 606 is inserted into the shallow groove 11, the sleeve disc 601 is connected with the tooth rod 10 through the tooth hole 602, the sleeve disc 601 cannot be continuously rotated due to the limitation of each locking rod 606, the tooth hole 602 is connected with the tooth rod 10, so that the rotation of the tooth rod 10 is also locked, the hand wheel 5 cannot be continuously rotated, so that the hand wheel 5 cannot be rotated when the hand wheel 5 is subjected to external force, so that the rotating rod 4 is prevented from rotating due to external force impact, so that the electric actuator is prevented from operating, and the opening of the valve is affected, so that the valve can operate at the opening regulated by the valve.

[0029] The detection assembly 9 comprises an electric push rod 901, a piston 902 and a pressure sensor 903, the electric push rod 901 is installed at one end of the detection pipe 7, the piston 902 is installed at the telescopic end of the electric push rod 901, the piston 902 is in sliding connection with the inner wall of the detection pipe 7, and the pressure sensor 903 is installed on the piston 902.

[0030] The liquid discharge pipe 8 is vertically connected at the bottom of one end of the detection pipe 7, and the inner diameter of the liquid discharge pipe 8 is smaller than the thickness of the piston 902.

[0031] In specific implementation, when leakage occurs at the connection between the base 1 and the valve, the medium flows into the detection pipe 7, so that the pressure in the detection pipe 7 increases, the pressure sensor 903 detects the existence of the medium pressure, the electric push rod 901 is contracted, the piston 902 is moved back, the liquid discharge pipe 8 is in communication with the detection pipe 7, and the medium can directly flow out of the liquid discharge pipe 8, so that the medium is prevented from entering the electric actuator, and the protection of the electric actuator is improved.

[0032] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A protection device for electric actuator of valve comprising a base (1), characterized in that: The base (1) top end is provided with an electric actuator housing (2), one side of the electric actuator housing (2) top end is connected with a rotating rod (4), one end of the rotating rod (4) is provided with a hand wheel (5), and the rotating rod (4) is coaxially provided with a gear bar (10) in the middle, the rotating rod (4) is connected with the electric actuator housing (2), and the shaft seat (3) is sleeved with the shaft seat (3), the shaft seat (3) is connected with the locking assembly (6) sleeved on the rotating rod (4), one side of the bottom end of the electric actuator housing (2) is connected with a detection tube (7), the detection tube (7) is connected with a drain pipe (8), and the detection tube (7) end is provided with a detection assembly (9).

2. A protective device for electric valve actuator according to claim 1, characterized in that: A plurality of shallow grooves (11) are formed on the shaft seat (3), and a deep groove (12) is formed on one side of each shallow groove (11).

3. A protective device for electric valve actuator according to claim 2, characterized in that: The locking assembly (6) comprises a sleeve disc (601), a tooth hole (602), a sliding groove (603), a sliding block (604), a spring (605) and a locking rod (606), the sleeve disc (601) is provided with a tooth hole (602) in the middle, the tooth hole (602) is sleeved with the gear bar (10), a plurality of sliding grooves (603) are formed on the sleeve disc (601), each sliding groove (603) is slidably provided with a sliding block (604), each sliding block (604) is fixedly connected with a spring (605) between the shaft seat (3), and each sliding groove (603) is provided with a locking rod (606) on the outside of the sleeve disc (601).

4. A protective device for electric valve actuator according to claim 3, characterized in that: A plurality of the locking rods (606) are arranged in a ring shape, and when each locking rod (606) is inserted into the shallow groove (11), the gear bar (10) is in contact with the inner wall of the tooth hole (602), and when each locking rod (606) is inserted into the deep groove (12), the inner wall of the tooth hole (602) is in sliding contact with the rotating rod (4).

5. A protective device for electric valve actuators according to claim 4, characterized in that: The detection assembly (9) comprises an electric push rod (901), a piston (902) and a pressure sensor (903), the electric push rod (901) is installed at one end of the detection tube (7), the electric push rod (901) is provided with a piston (902) at the telescopic end, the piston (902) is slidably connected with the inner wall of the detection tube (7), and the piston (902) is provided with a pressure sensor (903).

6. A protective device for electric valve actuator according to claim 5, characterized in that: The drain pipe (8) is vertically connected at the bottom of one end of the detection tube (7), and the inner diameter of the drain pipe (8) is smaller than the thickness of the piston (902).

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