Automatic sieve plate replacing mechanism

Abstract

The utility model relates to the technical field of dewatering screens, in particular to an automatic screen plate replacing mechanism which comprises a dewatering screen, a roller part and a driving device. The sieve plate can be automatically withdrawn, and the conical protruding part group can be automatically aligned with the sieve hole group to fix the sieve plate. In addition, the bottom of the roller piece is parallel to the bottom of the baffle, friction force between the sieve plate and the baffle can be reduced when the sieve plate retreats, and the conical protruding part sets have a better dredging effect on the sieve hole sets.

Description

Technical Field

[0001] The utility model patent relates to the technical field of dewatering screens, and in particular to an automatic screen plate replacement mechanism. Technical Background

[0002] At present, the boiler slag treatment system is composed of a slag scoop machine, a slag bin and a dewatering screen device. After the slag is scooped out from the slag scoop machine, it is dehydrated by the dewatering screen device and then enters the slag bin for transportation. When the dewatering screen is faced with an instantaneous large amount of slag or the slag is too thin, it may cause blockage. The screen plate needs to be cleaned to prevent blockage from endangering the safe operation of the slag scoop machine.

[0003] The current method to deal with screen plate blockage is to manually pour out the slag to clean the screen plate, or to set a ejector pin at the bottom of the screen plate. When the screen plate is blocked, the ejector pin at the bottom of the screen plate punctures the screen hole to clear the screen plate and solve the blockage problem.

[0004] The method of pouring out the slag and then cleaning the screen plate is too time-consuming and labor-intensive, which affects work efficiency. The method of setting a ejector at the bottom of the screen plate cannot determine the unblocked condition of the screen plate, and the ejector is easily stuck by the slag, causing blockage. During maintenance, the machine must be disassembled or manually entered into the machine, which is dangerous. Summary of the invention

[0005] The problem to be solved by the utility model is to provide a device which can quickly and automatically replace the screen plate when the dewatering screen device encounters a blockage, which is convenient and quick and does not affect the normal operation of the machine.

[0006] In order to solve the above problems, the utility model provides a screen plate automatic replacement mechanism, including a dewatering screen, a roller member, and a driving device;

[0007] The dewatering screen comprises: a screen bucket, a screen plate group, and a baffle;

[0008] The sieve plate group is provided with a plurality of sieve hole groups;

[0009] The bottom of the sieve bucket is provided with a chute group on both sides for the sieve plate group to slide in and out, and the sieve bucket is provided with a vertical chute on both sides, and the baffle slides up and down through the vertical chute;

[0010] The sieve bucket is provided with a first sensor for detecting whether the sieve plate is blocked;

[0011] A roller member is provided at the bottom of the baffle, and a conical protrusion group is provided on the curved surface of the roller member, and the conical protrusion group is adapted to the sieve hole group;

[0012] The roller member is provided with a second sensor for detecting whether the conical protrusion group is completely engaged with the sieve hole group;

[0013] The driving device is connected to the roller member and is used to drive the roller member to rotate;

[0014] When the sieve plate is in a sliding out state, the driving device drives the conical protrusion group to rotate outward, and the conical protrusion group is engaged with the sieve hole group, driving the sieve plate to withdraw outward;

[0015] When the screen plate slides out, the baffle moves downward along the vertical slide groove, the drum rotates inward, and the conical protrusion group is engaged with the sieve hole group of the lower screen plate, automatically aligning and clamping the screen plate.

[0016] Preferably, an automatic sieve plate replacement mechanism comprises a support frame, which is used to connect the baffle and the roller. A rolling bearing is provided at one end of the support frame and is fixedly connected to the roller so that the roller can rotate on the baffle.

[0017] Preferably, a sieve plate automatic replacement mechanism includes a controller and an alarm. When the sieve plate is blocked, the first sensor sends an alarm to the alarm. The alarm sounds an alarm after receiving the signal. The controller controls the driving device and then controls the roller to rotate outward to withdraw the sieve plate.

[0018] Preferably, an automatic screen plate replacement mechanism comprises an elevator, which is located below a driving device. When it is necessary to dump the slag, the elevator lifts the driving device to drive the roller to rise, thereby driving the baffle to rise, and then dumping the slag.

[0019] Preferably, the curved surface of the roller member and the bottom of the baffle plate are tangent to the sieve plate, which can reduce the friction between the baffle plate and the sieve plate when the sieve plate withdraws.

[0020] Preferably, the travel distance of the screen plate can be controlled by controlling the number of groups of tapered protrusions.

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

[0022] 1. The utility model proposes an automatic sieve plate replacement mechanism, which drives the roller member to rotate outward through a driving device, and the conical protrusion group on the roller member is engaged with the sieve hole group, driving the sieve plate to withdraw outward, and in the process of the sieve plate withdrawing, the conical protrusion group can better clear the sieve hole group and can also be more easily engaged with the sieve hole group. After the sieve plate withdraws, the baffle plate descends along the vertical slide groove, the roller member rotates inward, the conical protrusion group and the sieve hole group are automatically aligned, and the sieve plate is fixed to prevent the sieve plate from sliding during the vibration process, and the baffle plate and the curved surface of the roller member are tangent to the sieve plate, thereby reducing the friction between the sieve plate and the baffle plate when the sieve plate withdraws.

[0023] 2. The utility model proposes an automatic sieve plate replacement mechanism, which can realize a dewatering screen blockage fault alarm through sensors and alarms, and remind the staff to replace the sieve plate. 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] Attached Figure 1 A schematic diagram of an implementation method of an embodiment of the utility model;

[0026] Attached Figure 2 , 3 4 is a three-view diagram of a schematic diagram of an implementation example of the utility model;

[0027] Attached Figure 5 A schematic diagram of a screen body according to an embodiment of the utility model;

[0028] Attached Figure 6 A schematic diagram of a sieve plate according to an embodiment of the utility model;

[0029] Attached Figure 7 A schematic diagram of a roller system according to an embodiment of the utility model;

[0030] Attached Figure 8 A schematic diagram of a controller and an alarm according to an embodiment of the utility model;

[0031] Attached Fig. 9 This is a schematic diagram of the automatic alignment of the inner rotation of the drum according to an embodiment of the utility model.

[0032] Figure numerals: 1. sieve hole group; 2. sieve bucket; 3. baffle; 4. sieve plate; 5. roller member; 6. conical protrusion group; 7. rolling bearing; 8. support frame; 9. drive device; 10 elevator; 11. second sensor; 12. first sensor; 13. vertical slide; 14. horizontal slide group; 15. controller; 16. alarm. DETAILED DESCRIPTION

[0033] An automatic sieve plate replacement device and method for a slag scooping machine dewatering screen according to an embodiment of the utility model can automatically replace the sieve plate when the dewatering screen fails, thereby avoiding blockage that affects the safe operation of the slag scooping machine.

[0034] The device for realizing the above contents of the utility model is as shown in the attached Figure 1 and attached Figure 2 As shown:

[0035] The screen body 2 is used to hold slag. When the screen plate 4 is blocked, the first sensor 12 sends an alarm signal to the alarm 16, and the screen plate is inserted into the horizontal slide groove group 14. The controller 15 controls the driving device 9 to drive the roller member 5 to rotate outward, and the conical protrusion group 6 is engaged with the screen hole group 1, driving the screen plate to withdraw, and the baffle 3 slides downward along the vertical slide groove 13. The second sensor 11 detects whether the screen hole group 1 is fully engaged with the conical protrusion group 6. The support frame 8 connects the roller member 5 and the baffle 3, and a rolling bearing 7 is provided at the front end. The controller 15 controls the elevator 10 to move up and down.

[0036] The conical protrusion groups described in this embodiment are arranged in four groups. Preferably, the dredging effect of the roller member on the sieve plate and the travel distance of the sieve plate when the roller member rotates one circle can be improved by increasing the number of conical protrusion groups or increasing the size of the roller member or increasing both. At most, one conical protrusion group can dredge each sieve hole group.

[0037] The baffle described in this embodiment is affected by gravity and automatically slides down along the vertical slide groove when the screen plate exits. Preferably, the baffle can be connected to the elevator to control the descending distance of the baffle automatically.

[0038] The horizontal chute group described in this embodiment is provided with two horizontal chutes. Preferably, 2-7 horizontal chute groups can be provided to extend the screen plate replacement cycle.

[0039] Specifically, the implementation method is as follows:

[0040] The slag enters the dewatering screen for vibration dehydration, the screen plate is blocked, the dewatering screen stops running, the first sensor sends an alarm signal to the alarm, the alarm sounds an alarm, the controller controls the drive device and then controls the roller part to rotate outward, the conical protrusion group on the roller part is engaged with the screen hole group, and then drives the screen plate to withdraw; after the screen plate withdraws, the baffle moves downward along the vertical slide groove, and the second sensor detects whether the conical protrusion group and the screen hole group are completely engaged. If not, the controller controls the drive device and then controls the roller part to rotate inward, and the second sensor detects again whether the engagement is complete and clamps the screen plate. If yes, a complete engagement signal is sent to the controller, the controller controls the drive device to stop running, and the dewatering screen continues to run; when it runs to the last layer of screen plates, as the slag is filtered, the elevator lifts the drive device to drive the roller part to rise, and then drives the baffle to rise, and dumps the slag. After dumping, the screen plate is pulled out and inserted into the top horizontal slide groove, and the elevator descends and resets, completing a screen plate replacement cycle.

[0041] 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 sieve plate automatic replacement mechanism, Features: It includes a dewatering screen, a drum component, and a driving device; The dewatering screen comprises: a screen bucket, a screen plate group, and a baffle; The sieve plate group is provided with a plurality of sieve hole groups; The bottom of the sieve bucket is provided with a chute group on both sides for the sieve plate group to slide in and out, and the sieve bucket is provided with a vertical chute on both sides, and the baffle slides up and down through the vertical chute; The sieve bucket is provided with a first sensor for detecting whether the sieve plate is blocked; A roller member is provided at the bottom of the baffle, and a conical protrusion group is provided on the curved surface of the roller member, and the conical protrusion group is adapted to the sieve hole group; The roller member is provided with a second sensor for detecting whether the conical protrusion group is completely engaged with the sieve hole group; The driving device is connected to the roller member and is used to drive the roller member to rotate; When the sieve plate is in a sliding out state, the driving device drives the conical protrusion group to rotate outward, and the conical protrusion group is engaged with the sieve hole group, driving the sieve plate to withdraw outward; When the screen plate slides out, the baffle moves downward along the vertical slide groove, the drum rotates inward, and the conical protrusion group is engaged with the sieve hole group of the lower screen plate, automatically aligning and clamping the screen plate.

2. The automatic sieve plate replacement mechanism according to claim 1, Features: The invention comprises a support frame, wherein the support frame is used for connecting the baffle plate and the roller, and a rolling bearing is arranged at one end of the support frame and is fixedly connected with the roller so that the roller can rotate on the baffle plate.

3. The automatic sieve plate replacement mechanism according to claim 1, Features: It includes a controller and an alarm. When the screen plate is blocked, the first sensor sends an alarm to the alarm. The alarm sounds an alarm after receiving the signal. The controller controls the driving device and then controls the roller to rotate outward to withdraw the screen plate.

4. The automatic sieve plate replacement mechanism according to claim 1, Features: It includes an elevator, which is located below the driving device. When it is necessary to dump the slag, the elevator lifts the driving device to drive the roller to rise, and then drives the baffle to rise, and then dumps the slag.

5. The automatic sieve plate replacement mechanism according to claim 1, Features: The curved surface of the roller member and the bottom of the baffle plate are tangent to the sieve plate, which can reduce the friction between the baffle plate and the sieve plate when the sieve plate is withdrawn.

6. The automatic sieve plate replacement mechanism according to claim 1, Features: The travel distance of the screen plate can be controlled by controlling the number of groups of conical protrusions.

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