A coal cleaning device at the tail of a scraper conveyor

Abstract

This utility model belongs to the technical field of scraper conveyors, specifically a coal cleaning device for the tail of a scraper conveyor. It includes a material guiding component that receives and transports coal chunks and coal dust falling from the tail of the scraper conveyor. The material guiding component is equipped with an air guiding component that restricts the gas flow direction within the device. Inside the material guiding component is a purging component that thoroughly cleans residual coal chunks and coal dust from the tail. This utility model facilitates the use of multiple nozzles with different positions, whose jet direction can be changed by the position of the U-shaped frame. Under the action of the air guiding component, the nozzles can fully and continuously blow residual coal chunks and coal dust from the tail of the scraper conveyor into the device. Combined with the material conveying and lifting functions of the material guiding component, and the negative pressure suction function of the air guiding component, it prevents coal dust from scattering and avoids interference with the continuous operation of the scraper conveyor.

Description

Technical Field

[0001] This utility model belongs to the technical field of scraper conveyors, specifically relating to a coal cleaning device at the tail of a scraper conveyor. Background Technology

[0002] Scraper conveyors, which transport bulk materials within a closed trough using a scraper chain, are continuous transport equipment widely used in the coal mining industry. Their core components include the head, body, and tail. The coal cleaning device at the tail of the scraper conveyor is a key auxiliary component installed near the tail sprocket. Its main function is to solve the problem of coal backflow from the chain, preventing coal dust or lumps from entering and accumulating in the lower trough below the tail, thus avoiding problems such as chain jamming, chain skipping, accelerated chain wear, and even blockage of the chain's running path.

[0003] Chinese patent document CN222248748U discloses a coal cleaning device for the tail of a scraper conveyor. The device has a coal cleaning mechanism consisting of a collection trough and other components installed in a cleaning box inserted at the tail. The collection trough, which is operated by a lifting cylinder and a tilting cylinder, can collect coal chunks that have fallen from the tail of the scraper conveyor. When the scraper conveyor stops, the collected coal chunks are poured back into the scraper conveyor for subsequent transport, thus replacing manual cleaning of residual coal chunks at the tail.

[0004] However, in the existing technology, the coal cleaning device with limited capacity relies on the passive cleaning method of coal blocks and coal dust falling naturally. This not only makes it difficult to effectively remove residual coal blocks and coal dust, but also interferes with the continuous operation of the scraper conveyor. Therefore, a coal cleaning device for the tail of the scraper conveyor is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a coal cleaning device at the tail of a scraper conveyor.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A coal cleaning device for the tail of a scraper conveyor includes a material guiding component that can receive and transport coal chunks and coal powder falling from the tail of the scraper conveyor. The material guiding component is provided with a gas guiding component that can restrict the gas flow direction within the device. The material guiding component is provided with a purging component that can fully clean the residual coal chunks and coal powder at the tail.

[0008] The material guiding assembly includes a main docking frame, and a secondary docking frame is fixedly connected to the rear of the main docking frame;

[0009] The purging assembly includes a cleaning component that can spray air at multiple points to fully purge the tail of the machine, a lateral movement component that can easily adjust the spray direction of the cleaning component, and an air injection component that can evenly disperse the high-pressure airflow injected by the air guiding assembly into the cleaning component.

[0010] The lateral movement component includes a U-shaped frame that is movably installed between the main docking frame and the auxiliary docking frame;

[0011] The cleaning components include brackets that are fixedly installed in the main docking frame and the auxiliary docking frame, with multiple reversing plates movably connected between the two brackets. Multiple nozzles are fixedly installed on the reversing plates, and connecting handles that are movably connected to the U-shaped frame are provided at the front and rear of the reversing plates.

[0012] Preferably, the transverse component further includes a screw rod disposed on one side of the U-shaped frame, with a locking block movably connected to one end of the screw rod.

[0013] Preferably, the gas injection component includes multiple connectors fixedly installed on the docking subframe, with a valve pipe fixedly connected above the connector.

[0014] Preferably, multiple commutator plates are arranged at equal intervals along the length of the bracket, and the number of commutator plates is the same as the number of connectors.

[0015] Preferably, the air injection component also includes a diversion pipe disposed between the joint and a plurality of nozzles on a reversing plate that is close to its lateral position.

[0016] Preferably, both the main docking frame and the sub-dock are slidably connected to the U-shaped frame.

[0017] Preferably, the bracket is rotatably connected to the reversing plate, and both the U-shaped frame and the reversing plate are rotatably connected to the connecting handle.

[0018] Preferably, the U-shaped frame and the screw are connected by threads, and the screw is rotatably connected to the locking block.

[0019] The beneficial effects of this utility model are as follows: It facilitates the setting of multiple nozzles with different positions by changing the jet direction due to the position of the U-shaped frame. Under the action of the air guiding component, the nozzles can fully and continuously blow the residual coal blocks and coal powder at the tail of the scraper conveyor into this device. Combined with the material conveying and lifting functions of the material guiding component, and the negative pressure suction function of the air guiding component, it can prevent coal powder from scattering and avoid the device from interfering with the continuous operation of the scraper conveyor. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a coal cleaning device at the tail of a scraper conveyor according to the present invention;

[0022] Figure 2 This is a schematic diagram of the main structure of a coal cleaning device at the tail of a scraper conveyor according to the present invention;

[0023] Figure 3 yes Figure 1 Another perspective structural diagram;

[0024] Figure 4 yes Figure 1 Schematic diagram of some component structures;

[0025] Figure 5 yes Figure 1 A schematic diagram of the structure of some components from another perspective.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Material guiding assembly; 101. Main docking frame; 102. Sub-docking frame; 103. Collection bin; 104. Screw conveyor; 105. Discharge cylinder; 2. Air guiding assembly; 201. Air pump; 202. Filter; 203. Pull pipe; 204. Injection pipe; 3. Purging assembly; 301. U-shaped frame; 302. Screw; 303. Clamping block; 304. Bracket; 305. Reversing plate; 306. Nozzle; 307. Connecting handle; 308. Connector; 309. Valve pipe; 310. Diverter pipe. Detailed Implementation

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0031] like Figures 1-5 As shown, a coal cleaning device for the tail of a scraper conveyor includes a material guiding component 1 that can receive and transport coal chunks and coal powder falling from the tail of the scraper conveyor. The material guiding component 1 is provided with a gas guiding component 2 that can restrict the gas flow direction within the device. The material guiding component 1 is provided with a purging component 3 that can fully clean the residual coal chunks and coal powder at the tail of the machine.

[0032] In this embodiment: the material guiding component 1 includes a docking main frame 101, a docking sub-frame 102 is fixedly connected to the rear of the docking main frame 101, a material collection bin 103 is provided below the docking main frame 101 and the docking sub-frame 102, and an auger 104 that passes through the docking main frame 101 and the docking sub-frame 102 is fixedly connected to one side of the material collection bin 103. A discharge cylinder 105 is fixedly connected to the discharge end of the auger 104.

[0033] The combined docking main frame 101 and docking sub-frame 102 form a frame that can install components such as the collection bin 103, auger 104, air pump 201, and U-shaped frame 301, and can also be fastened to the tail of the scraper conveyor to cover the open chute of its tail frame. The collection bin 103 receives coal blocks and coal powder entering the frame. The auger 104, after operation, transports and lifts the coal blocks and coal powder falling from the collection bin 103 until they are injected into the discharge cylinder 105. The auger 104 is a material conveying device well known to those skilled in the art, so it will not be described in detail. The coal blocks and coal powder injected by the auger 104 through the discharge cylinder 105 are guided to the upper channel (carrying trough) of the scraper conveyor.

[0034] In this embodiment: the air guiding component 2 includes an air pump 201 fixedly installed on the docking sub-frame 102, a filter 202 fixedly installed on the collection bin 103, a suction pipe 203 fixedly connected between the air inlet end of the air pump 201 and the filter 202, and an injection pipe 204 fixedly connected to the air outlet end of the air pump 201.

[0035] After the air pump 201 is running, it continuously draws air from the collection bin 103 along the extraction pipe 203 and the filter 202, so that a negative pressure can be formed in the collection bin 103 to draw air from the frame and the auger 104. The air pump 201 pressurizes the drawn air and injects it into the valve pipes 309 of each air passage that are in the open state along the injection pipe 204.

[0036] In this embodiment: the purging component 3 includes a cleaning component that can spray air at multiple points to fully purge the tail of the machine, a lateral movement component that can easily adjust the spray direction of the cleaning component, and an air injection component that can evenly disperse the high-pressure airflow injected by the air guiding component 2 into the cleaning component.

[0037] The lateral movement component includes a U-shaped frame 301 movably installed between the main docking frame 101 and the auxiliary docking frame 102. The cleaning component includes brackets 304 fixedly installed in the main docking frame 101 and the auxiliary docking frame 102 respectively. Multiple reversing plates 305 are movably connected between the two brackets 304. Multiple nozzles 306 are fixedly installed on the reversing plates 305. Connecting handles 307 that are movably connected to the U-shaped frame 301 are provided at the front and rear of the reversing plates 305. The lateral movement component also includes a screw 302 provided on one side of the U-shaped frame 301. A locking block 303 is movably connected to one end of the screw 302. The air injection component includes multiple connectors 308 fixedly installed on the auxiliary docking frame 102. A valve pipe 309 is fixedly connected above the connectors 308. A diversion pipe 310 is provided between the connectors 308 and the multiple nozzles 306 on the reversing plates 305 that are close to each other in the lateral position.

[0038] The main docking frame 101 and the auxiliary docking frame 102 are slidably connected to the U-shaped frame 301. The U-shaped frame 301 is connected to the screw 302 by a thread. The screw 302 is rotatably connected to the locking block 303. The bracket 304 is rotatably connected to the reversing plate 305. The U-shaped frame 301 and the reversing plate 305 are rotatably connected to the connecting handle 307. Multiple reversing plates 305 are arranged at equal intervals along the length of the bracket 304. The number of reversing plates 305 is the same as that of the connector 308.

[0039] The screw 302, which rotates relative to the locking block 303, drives the U-shaped frame 301 to move laterally relative to the docking main frame 101 and docking sub-frame 102. The bracket 304 installs the reversing plates 305, which are equipped with multiple nozzles 306. The lateral position change of the U-shaped frame 301 is transmitted to the reversing plate 305 through the connecting handle 307. The reversing plate 305 can drive the nozzles 306 to rotate relative to the bracket 304 due to the pushing and pulling of the connecting handle 307, thereby changing the orientation of the nozzles 306. The valve pipe 309 controls the opening and closing of the air passage between the connector 308 and the injection pipe 204. The gas injected into the connector 308 can flow to the nozzles 306 connected to it through each diversion pipe 310.

[0040] Working principle: When this device is installed for cleaning coal at the tail of the scraper conveyor, the tail should be away from the main body of the scraper conveyor and the upper side of the tail, and fully contact the docking main frame 101 and docking auxiliary frame 102 so that the residual coal chunks and coal dust at the tail can enter the device from the openings of the docking main frame 101 and docking auxiliary frame 102 away from the screw 302.

[0041] When a scraper conveyor transports coal blocks mined in a coal mine, the auger 104 and air pump 201 can be operated. After operation, the air pump 201 can draw air into the frame body composed of the main docking frame 101 and the auxiliary docking frame 102 through the collection bin 103, and then inject it into the nozzle 306 through the injection pipe 204, valve pipe 309, connector 308, and diverter pipe 310. In this situation, the nozzle 306 can blow the coal blocks and coal dust remaining at the tail end into the frame body. The coal blocks and coal dust entering the frame body will be dispersed by gravity and air... Under the influence of flow and other factors, the material first enters the collection bin 103, and then, under the influence of gravity and other factors, enters the auger 104 to be conveyed and lifted to the discharge cylinder 105. After that, it enters the upper channel (carrying trough) of the scraper conveyor along the discharge cylinder 105 and is conveyed (although there will be a negative pressure near the feed end where the auger 104 is connected to the collection bin 103 due to the collection bin 103, the coal and coal powder can still continuously enter the auger 104 as the auger blades inside the auger 104 continue to rotate).

[0042] In addition, based on the main accumulation position of coal blocks and coal powder at the tail of the scraper conveyor and the height of the scraper chain of the scraper conveyor, the staff can adjust the main jet direction of the nozzle 306 by rotating the screw 302 to make the U-shaped frame 301 move laterally, thereby ensuring the cleaning effect of the blowing.

[0043] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A coal cleaning device for the tail of an apron conveyor, characterized in that: It includes a material guiding component (1) that can receive and transport coal chunks and coal powder falling from the tail of the scraper conveyor. The material guiding component (1) is provided with a gas guiding component (2) that can restrict the gas flow direction in the device. The material guiding component (1) is provided with a purging component (3) that can fully clean the residual coal chunks and coal powder at the tail of the machine. The material guiding assembly (1) includes a docking main frame (101), and a docking sub-frame (102) is fixedly connected to the rear of the docking main frame (101). The purging assembly (3) includes a cleaning component that can spray air at multiple points to fully purge the tail of the machine, a lateral movement component that can conveniently adjust the spray direction of the cleaning component, and an air injection component that can evenly disperse the high-pressure airflow injected by the air guiding assembly (2) into the cleaning component. The transverse component includes a U-shaped frame (301) movably installed between the main docking frame (101) and the sub- docking frame (102). The cleaning component includes brackets (304) that are fixedly installed in the main docking frame (101) and the auxiliary docking frame (102), respectively. Multiple reversing plates (305) are movably connected between the two brackets (304). Multiple nozzles (306) are fixedly installed on the reversing plates (305). Connecting handles (307) that are movably connected to the U-shaped frame (301) are provided at the front and rear of the reversing plates (305).

2. A flight cleaner for the tail of an en masse flight conveyor as claimed in claim 1, characterized in that: The transverse component also includes a screw (302) disposed on one side of the U-shaped frame (301), and a locking block (303) is movably connected to one end of the screw (302).

3. A flight cleaner for the tail of an en masse flight conveyor as defined in claim 1, characterized in that: The gas injection component includes multiple connectors (308) fixedly installed on the docking subframe (102), and a valve pipe (309) is fixedly connected above the connectors (308).

4. A flight cleaner for the tail of an apron conveyor as claimed in claim 3, characterized in that: Multiple reversing plates (305) are arranged at equal intervals along the length of the bracket (304), and the number of reversing plates (305) is the same as the number of connectors (308).

5. The coal cleaning device at the tail of a scraper conveyor according to claim 4, characterized in that: The air injection component also includes a diversion pipe (310) between a plurality of nozzles (306) respectively disposed on the connector (308) and the reversing plate (305) which is close to it in a lateral position.

6. A flight cleaner for an end of flight conveyor as defined in claim 1, wherein: Both the main docking frame (101) and the secondary docking frame (102) are slidably connected to the U-shaped frame (301).

7. A flight cleaner for the tail of an en masse flight conveyor as defined in claim 6, characterized in that: The bracket (304) is rotatably connected to the reversing plate (305), and the U-shaped frame (301) and the reversing plate (305) are both rotatably connected to the connecting handle (307).

8. A flight cleaner for the tail of an en masse flight according to claim 2, characterized in that: The U-shaped frame (301) is connected to the screw (302) by a thread, and the screw (302) is rotatably connected to the locking block (303).

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