Power-off quick-closing gate structure

Abstract

The utility model relates to a power-off quick-closing gate structure which sequentially comprises an opening and closing device, a lead screw and a gate from top to bottom, the lead screw comprises an upper section, a middle section and a lower section, the surface of the middle section is smooth, the middle section penetrates through a piston in a hydraulic oil cylinder, and the piston can move upwards or downwards along the middle section under the hydraulic action; the hydraulic oil cylinder forms an upper cavity and a lower cavity by taking the piston as a boundary and is provided with a first valve and a second valve respectively, the first valve is connected with the energy accumulator, and the second valve is connected with the hydraulic station; when the opening and closing device is powered on, the opening and closing device controls the lead screw to rotate to open and close the gate. When the opening and closing device is powered off, the energy storage device is matched with the hydraulic station to open and close the gate. The problem that an existing sewage treatment chamber gate structure cannot be automatically closed under the emergency condition is solved, it can be guaranteed that sewage entering the sewage treatment chamber can be manually controlled, and equipment damage is avoided.

Description

Technical Field

[0001] This application relates to the technical field of sewage treatment, and specifically relates to a power-off quick-closing gate structure. Background Art

[0002] When treating sewage, it is necessary to introduce the sewage into the treatment chamber for cleaning. The sewage enters the sewage treatment chamber through the gate, so the gate can control the amount of sewage entering the sewage treatment chamber. When the equipment is damaged or there is an emergency power outage, the gate should be quickly closed to prevent the continuous entry of sewage into the sewage treatment chamber, causing equipment damage or flooding of the sewage treatment chamber. In the prior art, in many cases, the gate relies on electric drive to fall, and there is no closing measure in case of emergency, resulting in many subsequent accidents. Utility Model Content

[0003] This application provides a power-off quick-closing gate structure, which solves the problem that the existing gate structure of the sewage treatment chamber cannot be automatically closed in case of emergency.

[0004] The technical solution of this application is as follows:

[0005] A power-off quick-closing gate structure includes, from top to bottom, a hoist, a lead screw, and a gate. The lead screw includes an upper segment, a middle segment, and a lower segment. The upper segment is connected to the hoist, and the lower segment is connected to the gate. The surface of the middle segment is smooth and passes through a piston in a hydraulic cylinder. The piston can move up or down along the middle segment under the action of hydraulic force.

[0006] The hydraulic cylinder is divided into an upper cavity and a lower cavity with the piston as the boundary. The upper cavity is provided with a first valve, and the first valve is connected to an accumulator through an injection pipe. The lower cavity is provided with a second valve, and the second valve is connected to a hydraulic station through an injection pipe.

[0007] The accumulator and the hydraulic station are electrically connected to the hoist and obtain the power-on state of the hoist through a sensor. When the hoist is powered on, the hoist controls the lead screw so that the gate has a first operating state in which the hoist drives the lead screw to rotate to open or close. When the hoist is powered off, the first valve opens, and the accumulator supplies hydraulic oil to the upper cavity so that the gate has a second operating state of closing under the action of hydraulic force. Or, when the hoist is powered off, the first valve and the second valve open, and the hydraulic station supplies hydraulic oil to the lower cavity so that the gate has a third operating state of opening under the action of hydraulic force.

[0008] Further, the accumulator includes an energy storage chamber and a storage balloon. The energy storage chamber is filled with hydraulic oil, and the storage balloon is filled with compressed gas. When the first valve is closed, the storage balloon is in a compressed state.

[0009] Furthermore, a limiting flap for preventing the piston from moving downward is provided at the junction of the middle segment and the lower segment.

[0010] Furthermore, a limiting flap for preventing the piston from moving downward is provided at the junction of the middle segment and the upper segment.

[0011] Due to the adoption of the above technical solution, the beneficial effects of the present application are as follows:

[0012] In order to ensure that the gate can be closed in the event of a power failure, the present application is provided with a hydraulic cylinder cooperating with an accumulator to realize mechanical closing of the gate, and the gate is opened through a hydraulic station in the event of a power failure. The process of closing the gate can be automated, and the gate can be opened manually. Therefore, the present application can open and close the gate in a power-off state to ensure that the sewage entering the sewage treatment chamber can be manually controlled and avoid equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0014] Figure 1 FIG. 1 is a schematic structural diagram of a power-off quick-closing gate structure provided by the present application;

[0015] 1. Hoist; 2. Lead screw; 2-1. Upper segment; 2-2. Lower segment; 2-3. Middle segment; 3. Gate; 4. Hydraulic cylinder; 4-1. Piston; 4-2. Upper cavity; 4-3. Lower cavity; 4-4. First valve; 4-5. Second valve; 5. Accumulator; 5-1. Accumulation chamber; 5-2. Storage balloon; 6. Hydraulic station; 7. Oil injection pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Based on the background art described above, as shown in the attached Figure 1As shown in the figure, the present application provides a structure of a quick-closing gate 3. The lead screw 2 includes an upper segment 2-1, a middle segment 2-3, and a lower segment 2-2. The upper segment 2-1 is connected to the hoist 1, and the lower segment 2-2 is connected to the gate 3. The surface of the middle segment 2-3 is smooth and passes through a piston 4-1 in a hydraulic cylinder 4. The piston 4-1 can move up or down along the middle segment 2-3 under the action of hydraulic force. The hydraulic cylinder 4 is divided into an upper cavity 4-2 and a lower cavity 4-3 with the piston 4-1 as the boundary. The upper cavity 4-2 is provided with a first valve 4-4, and the first valve 4-4 is connected to an accumulator 5 through an oil injection pipe 7. The lower cavity 4-3 is provided with a second valve 4-5, and the second valve 4-5 is connected to a hydraulic station 6 through an oil injection pipe 7. The accumulator 5 and the hydraulic station 6 are electrically connected to the hoist 1 and obtain the power-on state of the hoist 1 through a sensor. When the hoist 1 is powered on, the hoist 1 controls the lead screw 2 so that the gate 3 has a first operating state in which the hoist 1 drives the lead screw 2 to rotate to open or close. When the hoist 1 is powered off, the first valve 4-4 opens, and the accumulator 5 supplies hydraulic oil to the upper cavity 4-2 so that the gate 3 has a second operating state of closing under the action of hydraulic force. Or, when the hoist 1 is powered off, the first valve 4-4 and the second valve 4-5 open, and the hydraulic station 6 supplies hydraulic oil to the lower cavity 4-3 so that the gate 3 has a third operating state of opening under the action of hydraulic force.

[0017] In the normal powered-on state, the hoist 1 drives the lead screw 2 to rotate to realize the lifting of the piston 4-1 in the hydraulic cylinder 4. The specific process is as follows: After the hoist 1 is started, the upper segment 2-1 and the lower segment 2-2 of the lead screw 2 rotate. Since the surface of the middle segment 2-3 is smooth, it is in a "slipping thread" state, which has no effect on the lifting effect. At this time, there is no hydraulic oil in the hydraulic cylinder 4, and the gate 3 can be opened or closed. During this process, since the lead screw 2 is provided with threads, the threads can play a role in limiting. The piston 4-1 can always move on the middle segment 2-3 through the threads. The impact on the threads of the lead screw 2 in this state can be ignored because the rotation of the lead screw 2 is relatively gentle.

[0018] When powered off, when the sensor detects that the hoist 1 is powered off, it can control the first valve 4-4 to open through the internal circuit. The accumulator 5 releases hydraulic oil, and the hydraulic oil enters the upper cavity 4-2. The piston 4-1 has a tendency to move downward under the action of hydraulic force. Since the hydraulic force is strong and the rotation resistance of the lead screw 2 is not large, the piston 4-1 can drive the lead screw 2 to rotate and thus move downward. The principle of lifting the gate 3 upward is the same.

[0019] As a preferred embodiment of the present application, the energy storage device 5 includes an energy storage chamber 5-1 and a storage balloon 5-2. The energy storage chamber 5-1 is filled with hydraulic oil, and the storage balloon 5-2 is filled with compressed gas. When the first valve 4-4 is closed, the storage balloon 5-2 is in a compressed state. The hydraulic oil and the compressed gas can reach a balance. Since the gas is compressible, during energy storage, the property of gas compression is utilized for energy storage. When energy is needed, the hydraulic oil is released, the pressure on one side decreases, the balance is broken, and the gas expands to release energy.

[0020] As a preferred embodiment of the present application, a limit stop is provided at the junction of the middle segment 2-3 and the lower segment 2-2 to prevent the piston 4-1 from moving downward.

[0021] As a preferred embodiment of the present application, a limit stop is provided at the junction of the middle segment 2-3 and the upper segment 2-1 to prevent the piston 4-1 from moving downward.

[0022] The limit stop can reduce the impact of the piston 4-1 on the thread, better protect the thread, and at the same time increase the force-bearing area of the piston 4-1 and improve the transmission efficiency.

[0023] In the present application, the parts not described can be realized by adopting or referring to the existing technologies.

[0024] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A power-off quick-closing gate structure, which successively includes a hoist, a lead screw, and a gate from top to bottom, and is characterized in that the lead screw includes an upper section, a middle section, and a lower section. The upper section is connected to the hoist, and the lower section is connected to the gate. The surface of the middle section is smooth and passes through a piston in a hydraulic cylinder. The piston can move up or down along the middle section under the action of hydraulic force. The hydraulic cylinder forms an upper cavity and a lower cavity with the piston as the boundary. The upper cavity is provided with a first valve, and the first valve is connected to an accumulator through an oil injection pipe. The lower cavity is provided with a second valve, and the second valve is connected to a hydraulic station through an oil injection pipe. The accumulator and the hydraulic station are electrically connected to the hoist and obtain the power-on state of the hoist through a sensor. When the hoist is powered on, the hoist controls the lead screw so that the gate has a first operating state in which the hoist drives the lead screw to rotate to open or close. When the hoist is powered off, the first valve opens, and the accumulator supplies hydraulic oil to the upper cavity so that the gate has a second operating state of closing under the action of hydraulic force. Or, when the hoist is powered off, the first valve and the second valve open, and the hydraulic station supplies hydraulic oil to the lower cavity so that the gate has a third operating state of opening under the action of hydraulic force.

2. The power-off quick-closing gate structure according to claim 1, wherein the accumulator includes an energy storage cavity and a storage balloon. The energy storage cavity is filled with hydraulic oil, and the storage balloon is filled with compressed gas. When the first valve is closed, the storage balloon is in a compressed state.

3. The power-off quick-closing gate structure according to claim 1, wherein a limit stop is provided at the junction of the middle section and the lower section to prevent the piston from moving downward.

4. The power-off quick-closing gate structure according to claim 1, wherein a limit stop is provided at the junction of the middle section and the upper section to prevent the piston from moving downward.

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