Lead screw connection electric gate valve with rigid-flexible combination device

Abstract

The utility model relates to a lead screw connection electric gate valve with a rigid-flexible combination device, which comprises a motor, a gearbox, a power lead screw, a screw sleeve and a gate valve, and further comprises a movable plate, a connecting plate, an adjusting screw rod, an adjusting nut, an upper buffer spring and a lower buffer spring, the adjusting screw rods vertically penetrate through the front portion of the movable plate and the rear portion of a gate of the gate valve respectively, the two ends of the connecting plate are fixed to the upper ends of the corresponding adjusting screw rods respectively, the upper portions of the adjusting screw rods are sleeved with the upper buffer springs, the lower portions of the adjusting screw rods are sleeved with the lower buffer springs, and the adjusting nuts are screwed to the lower ends of the corresponding adjusting screw rods respectively. According to the technical scheme, the rigid-flexible combination device is additionally arranged, normal opening and closing of the gate valve can be guaranteed, the locking probability of the power lead screw is greatly reduced, normal operation of the gate valve is guaranteed, meanwhile, vertical stress is greatly reduced, the fault rate of the gate valve is reduced, and the gate valve can operate for a long period, is simple in structure and is widely applied.

Description

Technical Field

[0001] The utility model relates to an electric control device, in particular to a screw-connected electric plug-in valve with a rigid-flexible combination device. Background Art

[0002] At present, the connection method of electric gate valve is generally to connect the motor directly to the power screw through the gearbox. The threaded sleeve screwed on the power screw directly drives the control end of the gate valve to work. It has the advantages of low cost and simple structure.

[0003] In the prior art, a threaded sleeve is installed on the plug plate, and a power lead screw is connected to the threaded sleeve, connecting the motor, the power lead screw and the plug plate as a whole, which is rigidly connected. When the plug plate is in operation, it is easily affected by external forces. In particular, when the working environment is poor, foreign matter enters the plug track of the plug plate valve, causing the plug plate to shake up and down or left and right, which often causes force between the power lead screw and the threaded sleeve, and easily causes the power lead screw and the threaded sleeve to lock, making the plug plate unable to move, thereby causing the electric plug plate valve to malfunction. Utility Model Content

[0004] In view of this, the main purpose of the present invention is to provide a screw-connected electric gate valve with a rigid-flexible combination device. Through this technical solution, the connection method between the power screw and the gate is designed, and a rigid-flexible combination device is added, which ensures that the gate valve can be opened and closed normally, and greatly reduces the probability of the power screw locking, thereby ensuring the normal operation of the gate valve.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is realized as follows: a screw-connected electric gate valve with a rigid-flexible combination device, comprising a motor, a gearbox, a power lead screw, a wire sleeve and a gate valve, wherein the motor is connected to the input end of the gearbox, the output end of the gearbox is connected to the power lead screw, the wire sleeve is screwed onto the power lead screw, and is characterized in that it also includes a movable plate, a connecting plate, an adjusting screw, an adjusting nut, an upper buffer spring and a lower buffer spring, the wire sleeve is fixed on the rear end of the movable plate, and the adjusting screw is vertically installed on the front and On the rear part of the plug-in plate of the plug-in valve, the two ends of the connecting plate are respectively fixed to the upper ends of the corresponding adjusting screws, the upper buffer spring is sleeved on the upper part of the adjusting screw, the upper ends of the upper buffer springs are respectively pressed against the bottom of the connecting plate, and the lower ends of the upper buffer springs are respectively pressed against the movable plate and the upper surface of the plug-in plate of the plug-in valve, the lower buffer spring is sleeved on the lower part of the adjusting screw, the upper ends of the lower buffer springs are respectively pressed against the movable plate and the lower surface of the plug-in plate of the plug-in valve, the adjusting nuts are respectively screwed on the lower ends of the corresponding adjusting screws, and the upper ends of the adjusting nuts are respectively pressed against the lower ends of the corresponding lower buffer springs.

[0006] As a further technical solution, the adjusting screws are vertically installed on the front of the movable plate and the rear of the plug-in plate of the plug-in valve on both sides of the power screw, and the two ends of the two connecting plates are respectively fixed to the upper ends of the two adjusting screws on the same side of the screw.

[0007] The beneficial effect of adopting the above technical solution is: a screw-connected electric gate valve with a rigid-flexible combination device. Through this technical solution, the connection method between the power screw and the gate is designed, and a rigid-flexible combination device is added, which ensures that the gate valve can be opened and closed normally, and greatly reduces the probability of the power screw locking, ensuring the normal operation of the gate valve. At the same time, it also greatly reduces the upper and lower stresses and reduces the failure rate of the gate valve. The gate valve can be used for a long period of operation, and has a simple structure and is widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a side structural schematic diagram of the present utility model.

[0009] Figure 2 for Figure 1 Schematic diagram of the top view structure.

[0010] In the figure, 1 is a motor, 2 is a gearbox, 3 is a power screw, 4 is a threaded sleeve, 5 is a gate valve, 6 is a moving plate, 7 is a connecting plate, 8 is an adjusting screw, 9 is an adjusting nut, 10 is an upper buffer spring, 11 is a lower buffer spring, and 12 is a gate valve gate. DETAILED DESCRIPTION

[0011] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0012] like Figure 1 and Figure 2As shown, the utility model relates to a screw-connected electric gate valve with a rigid-flexible combination device, comprising a motor 1, a gearbox 2, a power screw 3, a wire sleeve 4 and a gate valve 5, wherein the motor 1 is connected to the input end of the gearbox 2, and the output end of the gearbox 2 is connected to the power screw 3, the wire sleeve 4 is screwed onto the power screw 3, and further comprises a movable plate 6, a connecting plate 7, an adjusting screw 8, an adjusting nut 9, an upper buffer spring 10 and a lower buffer spring 11, the wire sleeve 4 is fixed on the rear end of the movable plate 6, the adjusting screw 8 is vertically penetrated through the front of the movable plate 6 and the rear of the gate valve gate 12, the connecting plate The two ends of the connecting plate 7 are respectively fixed to the corresponding upper ends of the adjusting screw 8. The upper buffer spring 10 is sleeved on the upper part of the adjusting screw 8, and the upper ends of the upper buffer spring 10 are respectively pressed against the bottom of the connecting plate 7. The lower ends of the upper buffer spring 10 are respectively pressed against the movable plate 6 and the plug-in valve plug-in plate 12. The lower buffer spring 11 is sleeved on the lower part of the adjusting screw 8, and the upper ends of the lower buffer spring 11 are respectively pressed against the movable plate 6 and the plug-in valve plug-in plate 12. The adjusting nuts 9 are respectively screwed on the lower ends of the corresponding adjusting screws 8, and the adjusting nuts 9 are respectively pressed against the lower ends of the corresponding lower buffer springs 11.

[0013] As a further embodiment, the adjusting screw 8 is vertically installed on the front of the movable plate 6 and the rear of the plug valve plate 12 on both sides of the power screw 3, and the two ends of the two connecting plates 7 are respectively fixed to the upper ends of the two adjusting screws 8 located on the same side of the power screw 3.

[0014] When the technical solution of the present invention was applied, a test was conducted to compare the use cycle of two rigidly connected electric gate valves. When the gate valve 5 was opened once every hour, the two were used continuously for one month. On average, the power screw 3 locked once every four days in the prior art, while the power screw 3 did not lock after the present technical solution was adopted.

[0015] During operation, the present invention drives the gate valve 5 under the drive of the motor 1. The motor 1 runs in a forward and reverse manner, driving the power screw 3 to rotate slowly. The power screw 3 is connected to the wire sleeve 4. The wire sleeve 4 drives the movable plate 6 and the gate valve gate 12 to move back and forth. The movable plate 6 and the gate valve gate 12 are connected by an inverted U-shaped rigid-flexible combination device. The upper buffer spring 10 and the lower buffer spring 11 are respectively installed at the upper and lower connection points of the inverted U-shaped rigid-flexible combination device, so that the gate valve gate 12 can move up and down in a small range. The upper buffer spring 10 and the lower buffer spring 11 play a role in offsetting the upper and lower stresses in the middle, converting the stress of the upper and lower activities into elastic force, thereby reducing the influence on the power screw 3.

[0016] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

1. A screw-connected electric gate valve with a rigid-flexible combination device, comprising a motor, a gearbox, a power screw, a threaded sleeve, and a gate valve, wherein the motor is connected to the input end of the gearbox, the output end of the gearbox is connected to the power screw, and the threaded sleeve is screwed onto the power screw, characterized in that: The cam is fixed on the rear end of the movable plate, and the adjusting screw is vertically passed through the front of the movable plate and the rear end of the plug-in plate of the plug-in valve respectively. The two ends of the connecting plate are respectively fixed to the upper ends of the corresponding adjusting screws. The upper buffer spring is sleeved on the upper part of the adjusting screw, and the upper ends of the upper buffer springs are respectively pressed against the lower side of the connecting plate, and the lower ends of the upper buffer springs are respectively pressed against the movable plate and the plug-in plate of the plug-in valve. The lower buffer spring is sleeved on the lower part of the adjusting screw, and the upper ends of the lower buffer springs are respectively pressed against the lower side of the movable plate and the plug-in plate of the plug-in valve respectively. The adjusting nuts are respectively screwed on the lower ends of the corresponding adjusting screws, and the upper ends of the adjusting nuts are respectively pressed against the lower ends of the corresponding lower buffer springs.

2. The screw-connected electric gate valve with a rigid-flexible combination device according to claim 1 is characterized in that: The adjusting screws are respectively vertically installed on the front of the moving plate and the rear of the plug plate of the plug valve on both sides of the power screw, and the two ends of the two connecting plates are respectively fixed to the upper ends of the two adjusting screws on the same side of the power screw.

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