A vibrating dewatering screen device for slag scooping machine

Abstract

The utility model relates to a vibrating dewatering screen device for a slag scoop machine, including a dewatering screen device and an automatic telescopic device. The dewatering screen device includes a screen body, a screen plate, a movable support frame, and a vibration mechanism; the automatic telescopic device includes a movable push rod, a cylinder, and a driving motor. Through the vibrating dewatering screen device for a slag scoop machine of the utility model, it is convenient to overhaul the dewatering screen without disassembling or entering the interior for maintenance, which would cause potential safety hazards. In addition, the dewatering screen can directly replace the screen plate at the bottom of the screen body and quickly return to work without affecting the normal operation of the work. The screen plate can be used as a spare after overhaul.

Description

Technical Field

[0001] The utility model relates to the technical field of dewatering screens, in particular to a vibration dewatering screen device for a slag scooping machine. Technical Background

[0002] At present, thermal power generation is the main force in my country's power development. Technological innovation in thermal power plants is an effective way to reduce costs for thermal power plants to save energy and increase efficiency. The boiler slag treatment system is composed of a slag scoop, a slag bin, and a dewatering screen device. After the slag is scooped out from the slag scoop, it is dehydrated by the dewatering screen device and then enters the slag bin for transportation. The dewatering screen device may be blocked due to equipment failure, too thin slag, or too much slag in an instant, which may affect the safe operation of the slag scoop.

[0003] For example, patent CN218794360U discloses a dewatering screen with an anti-blocking structure, including a screen, a screen plate, and a telescopic rod. The screen is fixed above the screen plate, and the screen plate is fixedly connected to the telescopic rod. An anti-blocking part is fixed on the screen plate, and the anti-blocking part matches the screen holes of the screen. When the dewatering screen fails, the telescopic rod drives the screen plate to move, and the anti-blocking part on the screen plate is inserted into the screen holes to dredge the dewatering screen to prevent the dewatering screen from being blocked.

[0004] For this dewatering screen device with an anti-blocking structure, when the dewatering screen is blocked during operation, there is no way to alarm and judge the dredging situation, and the anti-blocking parts inserted into the screen holes are easily stuck by the slag, causing secondary blockage. In addition, the dewatering screen in the mechanism cannot be withdrawn. When performing maintenance, the machine needs to be disassembled or the internal repair needs to be entered, which is somewhat dangerous. When the dewatering screen is damaged and needs to be replaced, it cannot be partially disassembled, and the entire dewatering screen mechanism needs to be replaced, which is time-consuming and laborious. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a device which can quickly enable the dewatering screen to automatically advance and retreat when the dewatering screen encounters a fault condition, thereby protecting the safe operation of the slag remover, and the screen plate of the dewatering screen is detachable for easy replacement.

[0006] In order to solve the above technical problems, the utility model provides a vibrating dewatering screen device for a slag scooping machine, comprising a dewatering screen and an automatic telescopic device;

[0007] The dewatering screen comprises a screen body, a screen plate, a movable support frame, and a vibration mechanism;

[0008] The sieve body is used to hold the slag material and dehydrate the slag material together with the sieve plate;

[0009] The sieve plate is located at the bottom layer inside the sieve body, has sieve holes on the sieve plate, and can be removed and replaced;

[0010] The mobile support frame includes a fixed support and a pulley, wherein the fixed support is located below the screen body and is connected to the screen body.

[0011] The pulley is fixedly connected to the fixed bracket, and is located below the fixed bracket and is fixedly connected to the fixed bracket, driving the screen body to move forward and backward;

[0012] The vibration mechanism includes a vibration motor and a shock-absorbing spring. The vibration motor is located on the side of the screen body and is fixedly connected to the screen body to vibrate the screen body to achieve vibration dehydration of the slag. The shock-absorbing spring is located on the side of the screen body and connects the screen body and the mobile support frame to support the screen body while reducing the impact force of the vibration motor.

[0013] The automatic telescopic device comprises a moving push rod, a cylinder and a driving motor;

[0014] The movable push rod is located inside the cylinder and is fixedly connected to the movable support frame via a universal joint;

[0015] The cylinder receives the air pressure output by the drive motor, and the drive motor is fixedly connected to the cylinder and can

[0016] The cylinder outputs and releases air pressure, thereby controlling the air pressure inside the cylinder, which in turn controls the forward and backward movement of the push rod.

[0017] Preferably, a slide rail is provided under the pulley, and the slide rail provides a guide for the pulley to move forward and backward.

[0018] Preferably, the automatic telescopic device comprises a load-bearing support, and the load-bearing support is fixedly connected to the tail of the cylinder.

[0019] Preferably, the slag remover vibration dewatering screen includes a control box and a sensor, the control box includes an alarm and a controller, the alarm is connected to the sensor, the sensor is fixedly connected to the screen body, the sensor detects whether the screen plate is in a blocked state, when the dewatering screen fails, the sensor sends an alarm signal to the alarm, and after receiving the alarm signal, the alarm sends a stop signal to the controller, and the controller controls the automatic telescopic device, thereby controlling the dewatering screen to exit.

[0020] Preferably, the automatic telescopic device includes a limit sensor, which is located at the designated backward position and the initial position of the moving push rod. When the moving push rod reaches the designated position, the limit sensor sends a limit signal to the controller, and the controller controls the automatic telescopic device to stop running.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The vibrating dewatering screen device for a slag scoop machine proposed in the utility model can facilitate the inspection and replacement of the dewatering screen without disassembly or internal maintenance to cause safety hazards. The dewatering screen can directly replace the sieve plate at the bottom of the screen body and quickly return to work without affecting the normal operation of the work. The sieve plate can be used as a spare after inspection.

[0023] 2. The vibrating dewatering screen device of the slag scoop machine proposed in the utility model can give an alarm and stop the operation of the dewatering screen through the control box when the dewatering screen fails, thereby preventing the continuous operation of the dewatering screen from causing harm to the slag scoop machine under the fault condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are not intended to be drawn to scale. The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 A schematic diagram of an implementation method of an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of an automatic telescopic device according to an embodiment of the utility model;

[0027] Figure 3 It is a schematic diagram of a dewatering screen according to an embodiment of the utility model.

[0028] Figure numerals: 1. slag remover; 2. control box; 3. dewatering screen; 4. automatic telescopic device; 5. universal joint; 6. moving push rod; 7. cylinder; 8. driving motor; 9. screen body; 10. shock-absorbing spring; 11. vibration motor; 12. slide rail; 13. fixed bracket; 14. pulley; 15. connecting port; 16. screen plate; 17. limit sensor; 18. sensor; 19. load-bearing support. DETAILED DESCRIPTION

[0029] The vibrating dewatering screen device of the slag scoop machine of the utility model embodiment automatically withdraws from the dewatering screen when the dewatering screen encounters a fault condition through an automatic advance and retreat device, thereby preventing the dewatering screen device from affecting the safe operation of the slag scoop machine after being blocked. Specifically, the operation method of the vibrating dewatering screen of the slag scoop machine includes the following steps:

[0030] (1) The slag scoop machine transports slag to the dewatering screen, and the dewatering screen vibrates and dehydrates the slag, causing the dewatering screen to malfunction;

[0031] (2) The detection sensor on the screen body sends a dewatering screen failure alarm signal to the alarm. After receiving the alarm signal, the alarm sends a stop signal to the controller. After receiving the stop signal, the controller controls the automatic telescopic device, and then controls the dewatering screen to withdraw. After the automatic telescopic device touches the limit sensor, it stops running;

[0032] (3) Check the dewatering screen for faults or directly replace the screen plate. After completion, the controller controls the automatic telescopic device, which in turn controls the dewatering screen to reset. The automatic telescopic device stops running after touching the limit sensor, and the dewatering screen is put back into operation.

[0033] The utility model is used to implement the above-mentioned dewatering screen fault processing method. Figure 1 As shown, it includes a slag scooping machine 1; a dewatering screen 3; an automatic telescopic device 4; and a control box 2.

[0034] Figure 3 The dewatering screen 3 is shown, including a screen body 9, which contains the slag conveyed by the slag remover 1; a screen plate 16 located at the bottom layer inside the screen body and a vibration motor 11 located at the side of the screen body 9, which vibrate and dehydrate the slag contained in the screen body 9; a shock-absorbing spring 10 located at the side of the screen body 9, which connects the screen body and the movable support frame, supports the screen body and reduces the impact force of the vibration motor 11; a movable support frame located at the bottom of the screen body 9, the movable support frame includes a fixed support 13 and a pulley 14, which drives the dewatering screen to move forward and backward; a slide rail 12 located below the pulley 14 to guide the pulley 14 to move forward and backward; a sensor 18 fixed on the screen body, which monitors whether the dewatering screen 3 is blocked and transmits signals to the control box 2.

[0035] Figure 2 The figure shows an automatic telescopic device 4, which includes a universal joint 5 connected to a connecting port 15, wherein the universal joint 5 connects a movable support frame and a movable push rod 6; the movable push rod 6 is located inside a cylinder 7, and the cylinder 7 is fixedly connected to a driving motor 8, and the driving motor 8 applies or releases air pressure to the cylinder 7 to control the movable push rod 6 to move forward and backward; a limit sensor 17 is provided at the starting position and the specified moving position of the movable push rod 6, and the movable push rod 6 stops running when it touches the limit sensor 17; the load-bearing support 19 is fixedly connected to the tail of the cylinder 7 to support the automatic telescopic device.

[0036] Figure 1 The control box 2 shown includes an alarm and a controller. The alarm is connected to the sensor 18, and the sensor 18 is fixedly connected to the screen body 9. The sensor 18 detects whether the screen plate 16 is in a blocked state. When the dewatering screen 3 fails, the sensor 18 sends an alarm signal to the alarm. After receiving the alarm signal, the alarm sends a stop signal to the controller. The controller controls the automatic telescopic device 4, and then controls the dewatering screen 3 to exit.

[0037] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any appropriate manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A vibrating dewatering screen device for a slag scooping machine, characterized in that: It includes a dewatering screen and an automatic telescopic device; The dewatering screen comprises a screen body, a screen plate, a movable support frame, and a vibration mechanism; The sieve plate is located at the bottom layer inside the sieve body; The movable support frame includes a fixed support frame and a pulley, wherein the fixed support frame is located below the sieve body and is fixedly connected to the sieve body, and the pulley is located below the fixed support frame and is fixedly connected to the fixed support frame, driving the sieve body to move forward and backward; The vibration mechanism is located on the side of the sieve body and is fixedly connected to the sieve body, and the sieve body is vibrated to achieve dehydration; The automatic telescopic device comprises a moving push rod, a cylinder and a driving motor; The movable push rod is located inside the cylinder and is fixedly connected to the movable support frame via a universal joint; The cylinder is fixedly connected to a driving motor, and the driving motor applies or releases air pressure to the cylinder, thereby controlling the movable push rod to move forward and backward.

2. A slag scoop vibrating dewatering screen device according to claim 1, characterized in that: A slide rail is provided below the pulley, and the slide rail provides a guide for the pulley to move forward and backward.

3. A slag scoop vibrating dewatering screen device according to claim 2, characterized in that: The automatic telescopic device comprises a load-bearing support, and the load-bearing support is fixedly connected to the tail of the cylinder.

4. A slag scoop vibrating dewatering screen device according to claim 1, characterized in that: It includes a control box and a sensor. The control box includes an alarm and a controller. The alarm is connected to the sensor. The sensor is fixedly connected to the screen body. The sensor detects whether the screen plate is in a blocked state. When the dewatering screen fails, the sensor sends an alarm signal to the alarm. After receiving the alarm signal, the alarm sends a stop signal to the controller. The controller controls the automatic telescopic device, thereby controlling the dewatering screen to exit.

5. The vibrating dewatering screen device for a slag scooping machine according to claim 1, characterized in that: The automatic telescopic device comprises a limit sensor, which is located at a designated position and an initial position of the moving push rod. When the moving push rod reaches the designated position, the limit sensor sends a limit signal to the controller, and the controller controls the automatic telescopic device to stop running.

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