Coal transportation screening, discharging and flow limiting method and device thereof

Abstract

This invention discloses a method and apparatus for limiting the flow of coal during screening and discharge. The method includes a conveying mechanism comprising a conveyor belt, a discharge rack mounted on the conveyor belt, a discharge hopper mounted on the discharge rack, a flow-limiting component mounted on the discharge hopper, and a sensing component mounted on the flow-limiting component. The flow-limiting component includes a flow-controlling horizontal plate mounted on the discharge hopper, a flow-controlling slider mounted on the flow-controlling horizontal plate, a material distribution trough on the discharge hopper, and a flipping component mounted on the flow-controlling horizontal plate. This method prevents clogging of the filter screen body, which could lead to low screening and filtration efficiency, and improves the working efficiency of the filter screen body. Simultaneously, during the discharge of screened coal, the sensing component detects the accumulation of coal and sends a signal to the flow-limiting component, enabling the flow-limiting component to activate and limit the flow, thus facilitating the restoration of normal coal transportation.

Description

Technical Field

[0001] This invention relates to the technical field of screening flow limiting devices, and more particularly to a method and apparatus for limiting the discharge of coal during screening. Background Technology

[0002] Coal is an important energy resource widely used globally. Screening is a crucial step in the production and transportation of coal, used to classify and separate coal according to particle size.

[0003] After coal has been processed for a long time, some large pieces of material will fall onto the filter screen and cannot roll off in time. If the screening device cannot be adjusted according to the actual situation, it may not be able to achieve the best screening effect, resulting in low screening efficiency. At the same time, when the coal is transported by the screening coal conveying system, the lack of a flow restriction device at the discharge end of the screening device will lead to the risk of coal accumulation and spillage during the transportation process. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the existing coal conveying system after screening, which has the risk of coal accumulation and blockage during transportation due to the lack of a flow restriction device at the discharge end of the screening device, a coal transportation screening discharge flow restriction method and device are proposed.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: selecting appropriate equipment to screen the coal according to the characteristics of the coal and the screening requirements;

[0007] Based on the characteristics of the screened coal and transportation requirements, select appropriate transportation equipment for transportation;

[0008] A flow-limiting device is installed at the discharge end of the screening device to control the material flow of the screening device;

[0009] Regular maintenance and upkeep of screening equipment and conveying devices are required.

[0010] By installing sensors, monitoring equipment, and automated systems, the coal screening and transportation process can be monitored and data collected in real time.

[0011] As a preferred embodiment of the coal transportation screening and discharge flow restriction method of the present invention, the screening device is equipped with multiple layers of screens according to different needs, and performs multiple screenings and gradings of coal to obtain coal products of different particle sizes.

[0012] As a preferred embodiment of the coal transportation screening and discharge flow restriction method of the present invention, the flow restriction device can adjust the discharge speed and flow rate of the screening device as needed.

[0013] The beneficial effects of the coal transportation screening and discharge flow restriction method of the present invention are as follows: the coal is screened by a screening device according to the characteristics and screening requirements of the coal, and the screened coal is transported to the transmission system through the discharge end of the screening device. During the transportation process, the flow restriction device can monitor the coal accumulation on the transportation device in real time, and control the coal discharge through the detection data to ensure the stable transportation of coal and reduce coal accumulation and spillage.

[0014] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: a transmission mechanism, including a transmission belt, a discharge rack disposed on the transmission belt, a discharge hopper disposed on the discharge rack, a flow limiting component disposed on the discharge hopper, and a material sensing component disposed on the flow limiting component.

[0015] As a preferred embodiment of the coal transportation screening and discharge flow limiting device of the present invention, the flow limiting component includes a flow control plate disposed on the discharge hopper, a flow control slider disposed on the flow control plate, a material distribution trough opened on the discharge hopper, and a flipping component disposed on the flow control plate.

[0016] As a preferred embodiment of the coal transportation screening and discharge flow restriction device of the present invention, the overturning component includes an overturning bracket disposed on the discharge frame, a pushing rod disposed on the overturning bracket, and a pushing chute disposed on the discharge hopper.

[0017] As a preferred embodiment of the coal transportation screening and discharge flow restriction device of the present invention, the sensing component includes a sensing plate disposed on the discharge hopper, a sensing frame disposed on the sensing plate, a sliding member disposed on the sensing frame, and a pushing member disposed on the sliding member.

[0018] As a preferred embodiment of the coal transportation screening and discharge flow restriction device of the present invention, the sliding member includes a pusher bracket disposed on the discharge hopper, a pusher slide rod disposed on the pusher bracket, and a pusher spring disposed on the pusher slide rod.

[0019] The sensing rack and the pusher slide are slidably connected.

[0020] As a preferred embodiment of the coal transportation screening and discharge flow restriction device of the present invention, the pusher, including the discharge hopper and the flow control plate, is provided with adsorption patches and adsorption sliders provided on the sensing frame.

[0021] The adsorption patch and the adsorption slider are compatible.

[0022] As a preferred embodiment of the coal transportation screening and discharge flow restriction device of the present invention, the screening component includes a screening container and a screening support, a feed hopper disposed on the screening container, a collection hopper disposed on the screening support, and a screening plate disposed on the screening support.

[0023] The adaptive component includes a power assembly disposed on the screening support, a detection assembly disposed on the power assembly, and a flow control assembly disposed on the detection assembly;

[0024] The filter assembly includes a filter holder disposed within the screening chamber, a filter body disposed on the filter holder, and an anti-clogging component disposed on the filter body.

[0025] The beneficial effects of the coal transportation screening and discharge flow control device of the present invention are as follows: the coal raw material is screened and filtered by the screening component. During the screening process, the degree of coal accumulation on the screening box is detected by the adaptive component. When the filter body is blocked, it can be dealt with in a timely manner to prevent the low screening and filtration efficiency caused by the blockage of the filter body and improve the working efficiency of the filter body. At the same time, during the discharge of the screened coal raw material, the accumulation of coal raw material is sensed by the sensing component and a signal is sent to the flow limiting component, which can activate the flow limiting component to limit the discharge to a certain extent, thereby facilitating the restoration of normal coal raw material transportation. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0027] Figure 1 This is a schematic diagram of the overall structure of the coal transportation screening and discharge control device in this invention.

[0028] Figure 2 This is a schematic diagram of the overall structure of the transmission mechanism in this invention.

[0029] Figure 3 This is a planar sectional view of the transmission mechanism in this invention.

[0030] Figure 4 This is a partial view of the current limiting component and the sensing component in this invention.

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of the discharge hopper in this invention.

[0032] Figure 6 This is a schematic diagram of the planar structure of the screening component in this invention.

[0033] Figure 7 In this invention Figure 6 Enlarged view of section A.

[0034] Figure 8 This is a partial schematic diagram of the power component in this invention.

[0035] Figure 9 In this invention Figure 1 Enlarged view of section B.

[0036] Figure 10 This is a partial structural diagram of the flow control component in this invention.

[0037] Figure 11 This is a schematic diagram of the overall structure of the filter component in this invention.

[0038] Figure 12 This is a schematic diagram of the overall structure of the screening container in this invention.

[0039] Figure 13 In this invention Figure 11 Enlarged view of section C.

[0040] Figure label:

[0041] 100. Screening component; 101. Screening container; 102. Screening support; 103. Feed hopper; 104. Collection hopper; 105. Screening plate; 200. Adaptive component; 201. Power assembly; 202. Detection assembly; 203. Flow control assembly; 300. Filter screen component; 301. Filter screen holder; 302. Filter screen body; 303. Anti-clogging assembly; 201a. Power support; 201b. Power push rod; 201c. Power push block; 201d. Power push groove; 202a. Detection stand 202b, Detection conveyor belt; 202c, Detection protrusion; 202d, Contact protrusion; 202e, Power supply component; 202e-1, Power supply electrical box; 202e-2, Power supply switch; 202e-3, Trigger protrusion; 203a, Discharge port; 203b, Flow control plate; 203c, Drive component; 203c-1, Fixed frame; 203c-2, Drive protrusion; 203c-3, Drive slide; 303a, Stretching cross plate; 303b, Stretching slide; 303c, Elastic component; 303d. Positioning components; 303c-1, elastic slide bar; 303c-2, first slide groove; 303c-3, elastic spring; 303d-1, positioning bracket; 303d-2, positioning adsorption plate; 303d-3, limiting bracket; 303a-1, limiting plate; 303a-2, limiting slide bar; 303a-3, limiting spring; 303a-4, limiting adsorption block; 400, transmission mechanism; 401, transmission belt; 402, discharge rack; 403, discharge hopper; 404, flow limiting component; 405, sensing... Material assembly; 404a, flow control plate; 404b, flow control slider; 404c, material distribution trough; 404d, flipping component; 404d-1, flipping bracket; 404d-2, push rod; 404d-3, push chute; 405a, sensing plate; 405b, sensing rack; 405c, sliding component; 405d, push component; 405c-1, push bracket; 405c-2, push slide bar; 405c-3, push spring; 405d-1, adsorption slider; 405d-2, adsorption patch; Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0045] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0046] Example 1

[0047] Reference Figures 1-13 This is the first embodiment of the present invention, which provides a coal transportation screening and discharge flow restriction method and apparatus, comprising,

[0048] S1. Select appropriate equipment to screen the coal according to its characteristics and screening requirements. For example, you can choose different types of screening equipment such as vibrating screen, rotary vibrating screen, and tilting screen to meet the screening needs of coal with different particle sizes and moisture content.

[0049] S2. Based on the characteristics of the screened coal and transportation requirements, select appropriate transportation devices for transportation; for example, different types of transportation devices such as belt conveyors, screw conveyors, and bucket elevators can be selected to ensure smooth transportation and transfer of coal.

[0050] S3. A flow limiting device is installed at the discharge end of the screening device to control the material feeding of the screening device; the flow control device can adjust the discharge speed and flow rate of the screening device as needed to ensure the smooth transportation and transfer of coal and reduce the risk of blockage and spillage.

[0051] S4. Perform regular maintenance and upkeep on the screening equipment and conveying devices. This includes cleaning, lubrication, inspection, and replacement of worn parts. This helps maintain the normal operation and efficiency of the equipment, reducing downtime and malfunctions.

[0052] S5. By installing sensors, monitoring equipment, and automated systems, the coal screening and transportation process is monitored and data is collected in real time. Data collection helps staff to identify and solve problems in a timely manner, improving transportation efficiency and safety.

[0053] Example 2

[0054] Reference Figures 1-5This is the second embodiment of the present invention, which is based on the previous embodiment, but differs in that: the transmission mechanism 400 includes a transmission belt 401, a discharge rack 402 disposed on the transmission belt 401, a discharge hopper 403 disposed on the discharge rack 402, a flow limiting component 404 disposed on the discharge hopper 403, and a sensing component 405 disposed on the flow limiting component 404. The transmission belt 401 is disposed below the discharge hopper 403 on the discharge rack 402, the flow limiting component 404 is disposed between the discharge hopper 403 and the transmission belt 401, and the sensing component is disposed on the flow limiting component 404. Through the cooperation of the flow limiting component 404 and the sensing component, a flow limiting device is formed at the discharge end of the discharge hopper 403, so that during the coal screening and discharge process, the discharge speed can be controlled according to the transport speed of the transmission belt 401 to ensure the smooth transport of coal and reduce coal accumulation and spillage.

[0055] The rest of the structure is the same as in Example 1.

[0056] The flow limiting component 404 includes a flow-controlling horizontal plate 404a disposed on the discharge hopper 403, a flow-controlling slider 404b disposed on the flow-controlling horizontal plate 404a, a material distribution groove 404c disposed on the discharge hopper 403, and a flipping component 404d disposed on the flow-controlling horizontal plate 404a. The upper end of the flow-controlling horizontal plate 404a has a triangular cross-section, and the two flow-controlling horizontal plates 404a are symmetrically arranged. The material distribution groove 404c is disposed at the lower end of the flow-controlling horizontal plate 404a. The flow-controlling slider 404b is symmetrically arranged below the flow-controlling horizontal plate 404a and is used to connect the discharge hopper 403 and the flow-controlling slider 404b. The flow-controlling slider 404b and the discharge hopper 403 are slidably connected. The flipping component 404d is disposed at the upper end of the flow-controlling horizontal plate 404a and is used to flip the flow-controlling horizontal plate 404a to achieve flow limiting.

[0057] Furthermore, the tilting component 404d includes a tilting bracket 404d-1 disposed on the discharge rack 402, a pushing rod 404d-2 disposed on the tilting bracket 404d-1, and a pushing chute 404d-3 disposed on the discharge hopper 403. The tilting brackets 404d-1 are symmetrically disposed on the discharge rack 402, the pushing rods 404d-2 are arranged in a straight line between the tilting brackets 404d-1, the pushing chute is opened on the discharge hopper 403, and the pushing rods 404d-2 are hinged to the flow control plate 404a. The flow control plate 404a is pushed by the material sensing component 405, causing the flow control plate 404a to tilt and block the discharge end of the discharge hopper 403, thereby limiting the coal feeding speed and ensuring the transportation of coal.

[0058] Furthermore, the sensing component 405 includes a sensing plate 405a disposed on the discharge hopper 403, a sensing frame 405b disposed on the sensing plate 405a, a sliding member 405c disposed on the sensing frame 405b, and a pushing member 405d disposed on the sliding member 405c. There is a certain angle between the sensing plate 405a and the conveyor belt 401. In order to prevent the sensing plate 405a from being accidentally touched, the sliding member 405c is disposed on the sensing frame 405b so that the sensing plate 405a can be continuously pressed against the coal for a long time, thereby providing a signal for the activation of the flow limiting component 404.

[0059] Furthermore, the sliding component 405c includes a pusher bracket 405c-1 mounted on the discharge hopper 403, a pusher slide bar 405c-2 mounted on the pusher bracket 405c-1, and a pusher spring 405c-3 mounted on the pusher slide bar 405c-2; the sensing rack 405b is slidably connected to the pusher slide bar 405c-2. The pusher component 405d includes an adsorption patch 405d-2 mounted on both the discharge hopper 403 and the flow control plate 404a, and an adsorption slider 405d-1 mounted on the sensing rack 405b; the adsorption patch 405d-2 and the adsorption slider 405d-1 are compatible with each other, wherein the pusher bracket 405c-1 is symmetrically positioned on both sides below the discharge hopper 403. The pusher slide bar 405c-2 is located inside the pusher bracket 405c-1 and is slidably connected to the sensing bracket 405b. The pusher spring 405c-3 is sleeved on the pusher slide bar 405c-2 and is used to connect the sensing bracket 405b and the pusher bracket 405c-1. The adsorption slider 405d-1 is symmetrically arranged on one side of the discharge hopper 403 and is connected to the sensing plate 405a. The adsorption slider 405d-1 is made of magnetic material and is attracted to the adsorption patch 405d-2. The sensing plate 405a drives the adsorption slider 405d-1 to move, causing it to separate from the adsorption patch 405d-2, which causes the flow control plate 404a to flip, thereby limiting the flow of coal.

[0060] When the screened coal is discharged through the discharge hopper 403, it is conveyed on the conveyor belt 401. If the discharge speed is too fast, the coal accumulates on the conveyor belt 401. At this time, the sensing plate 405a comes into contact with the coal, and the accumulation of coal pushes the sensing plate 405a to move. During the movement of the sensing plate 405a, the sensing frame 405b slides on the pusher slide bar 405c-2, stretching the pusher spring 405c-3. At the same time, the sensing plate 405a drives the adsorption slider 405d-1 to move, causing... When the coal is separated from the adsorption patch 405d-2, the flow control plate 404a flips, thereby limiting the flow of coal. At this time, the flow control slider 404b slides, and the flow control plate 404a is pulled by the push rod 404d-2, which drives the push rod 404d-2 to slide in the push chute 404d-3 and flip it, blocking the discharge end of the discharge hopper 403. This allows the coal to be discharged through the gap between the distribution chute 404c and the two flow control plates 404a, greatly slowing down the discharge speed of the device.

[0061] Example 3

[0062] Reference Figures 1-13 This is the third embodiment of the present invention, which differs from the second embodiment in that it includes a screening component 100, comprising a screening container 101 and a screening support 102, a feed hopper 103 disposed on the screening container 101, a collection hopper 104 disposed on the screening support 102, and a screening plate 105 disposed on the screening support 102; wherein, a vibration motor is disposed at one end of the screening container 101 to generate vibration force, which drives the particulate matter on the filter screen component 300 to shake, thereby preventing the material from accumulating in the screen holes. By feeding material into the feed hopper 103, the raw material enters the screening container 101 through the feed hopper 103 for screening. After screening, smaller coal particles are collected through the collection hopper 104, while larger coal particles are discharged through the filter screen component 300 from the screening plate 105, thereby achieving coal screening.

[0063] The adaptive component 200 includes a power assembly 201 disposed on the screening support 102, a detection assembly 202 disposed on the power assembly 201, and a flow control assembly 203 disposed on the detection assembly 202.

[0064] Specifically, the power assembly 201 includes a power support 201a mounted on the screening support 102, a power push rod 201b mounted on the power support 201a, a power push block 201c mounted on the power push rod 201b, and a power push groove 201d mounted on the screening container 101. The power push groove 201d is adapted to the power push block 201c. The power support 201a is located on the side of the screening support 102 away from the screening plate 105, and the power push rods 201b are symmetrically arranged at the upper end of the power support 201a. The power push rods 201b are programmed to remain stationary for a period of time when they reach their highest point. After retraction, the power push block 201c is located at the upper end of the power push rod 201b, and its end cross-section is circular. The power push groove 201d is opened below the screening container 101 at a position corresponding to the power push block 201c, and its cross-section is semi-arc. It is combined with the power push block 201c to connect the power push rod 201b and the screening container 101. The detection component 202 provides data for the power push rod 201b to start, so that the power push rod 201b pushes the screening container 101, and the angle between the screening container 101 and the screening support 102 increases, thereby enabling the large particles of coal on the filter screen body 302 to be dumped.

[0065] The detection component 202 includes a detection stand 202a mounted on a power support 201a, a detection conveyor belt 202b mounted on the detection stand 202a, a detection protrusion 202c mounted on the detection conveyor belt 202b, an abutting protrusion 202d mounted on the screening container 101, and a feeder 202e mounted on the detection stand 202a. The abutting protrusion 202d and the detection protrusion 202c are adapted to each other. The detection stand 202a is located on the side of the power support 201a away from the filter screen component 300. The detection stand 202a and the detection conveyor belt 202b are rotatably connected, and there is a certain resistance between the detection stand 202a and the detection conveyor belt 202b. Only when the impurities on the filter screen component 300 accumulate to a certain extent can the filter screen component 300 drive the detection conveyor belt 202b to slide on the detection stand 202a, thereby realizing the detection of the accumulation on the filter screen component 300.

[0066] Furthermore, the power supply component 202e includes a power supply box 202e-1 mounted on the power support 201a, a power supply switch 202e-2 mounted on the power supply box 202e-1, and a triggering protrusion 202e-3 mounted on the screening container 101. The power supply switch 202e-2 is electrically connected to the electric push rod. The power supply box 202e-1, mounted on the power support 201a, is used to store electrical energy. The power supply switch 202e-2, mounted on the power supply box 202e-1, is used to control whether the power supply box 202e-1 supplies electrical energy to the power assembly 201. The load-bearing condition of the filter screen component 300 on the screening container 101 drives the detection conveyor belt 202b on the detection stand 202a to rotate, causing the triggering protrusion 202e-3 to trigger the power supply switch 202e-2, thereby providing power to the power push rod 201b.

[0067] When screening coal raw materials, the raw materials are fed into the feed hopper 103 and reach the screening container 101. The filter screen component 300 in the screening container 101 is used to screen the coal raw materials. During the screening process, large particles accumulate on the filter screen component 300, causing the weight of the screening container 101 to increase. It then flips along the hinge point on the screening support 102. Because the abutting protrusion 202d on the screening container 101 contacts the detection protrusion 202c, it can support the screening container 101 when there is no accumulation of material. When some large particles accumulate on the screening container 101, the screening container 101 will flip by the abutting protrusion 202d. The contact rod 202d and the detection protrusion 202c come into contact with each other, causing the detection conveyor belt 202b to move on the detection bracket. This causes the trigger protrusion 202e-3 on the screening container 101 to come into contact with the power supply switch 202e-2, allowing the power supply box 202e-1 to discharge and provide power to the power push rod 201b. At this time, the power push rod 201b drives the power push block 201c to engage with the power push groove 201d, pushing the screening container 101 and increasing the angle between the screening container 101 and the screening, making it easier for large materials to be discharged from the screening container 101, thereby facilitating the screening of the screening container 101 and improving the screening effect of the screening container 101.

[0068] The flow control component 203 includes a discharge port 203a opened on the feed hopper 103, a flow control plate 203b disposed on the feed hopper 103, and a drive component 203c disposed on the flow control plate 203b. The flow control plate 203b is disposed at the bottom of the feed hopper 103 and is slidably connected to the feed hopper 103. It is adapted to the discharge port 203a. The drive component 203c drives the flow control plate 203b to move, so that it can discharge material within a suitable range, effectively preventing the filter screen component 300 from clogging and greatly rationalizing the material discharge in the coal screening process.

[0069] The driving component 203c includes a fixed frame 203c-1 mounted on the screening support 102, a driving protrusion 203c-2 mounted on the fixed frame 203c-1, and a driving groove 203c-3 formed on the flow control plate 203b. The driving protrusion 203c-2 and the driving groove 203c-3 are adapted to each other. The fixed frame 203c-1 is symmetrically arranged on both sides of the screening support 102, and the driving protrusion 203c-2 is located on the side of the fixed frame 203c-1 near the flow control plate 203b. The driving protrusion 203c-2 and the driving groove 203c-3 are adapted to each other. The movement of the screening container 101 drives the feed hopper 103 to move, so that the flow control plate 203b slides under the restriction of the fixed frame 203c-1, controlling the size of the discharge port 203a, thereby effectively preventing the accumulation of filter screen components 300 during the filtration process.

[0070] When the screening container 101 is rotated along the hinge point under force, the feed hopper 103 will also rotate along with the screening container 101. The flow control plate 203b is kept still by the fixed frame 203c-1, so that the feed hopper 103 partially blocks the discharge port 203a during the sliding process, which slows down the discharge of material from the discharge port 203a, thereby controlling the flow of material from the feed hopper 103. After the impurities on the screening container 101 are emptied, the screening container 101 is reset. At this time, the feed hopper 103 is reset along with the rotation of the screening container 101, so that the flow control plate 203b is separated from the discharge port 203a, and normal discharge is achieved.

[0071] The filter element 300 includes a filter holder 301 disposed in the screening container 101, a filter body 302 disposed on the filter holder 301, and an anti-clogging component 303 disposed on the filter body 302. The filter holder 301 is disposed in the screening container 101 and together with the filter body 302 forms the filtration part of the screening element 100 for filtering coal raw materials. The anti-clogging component 303 is disposed on the filter element 300 for cleaning the filter body 302 and preventing low screening and filtration efficiency caused by clogging of the filter body 302.

[0072] Specifically, the anti-clogging component 303 includes a stretching cross plate 303a disposed on the filter screen holder 301, a stretching groove 303b opened on the screening container 101, an elastic element 303c disposed on the filter screen holder 301, and a locking element 303d disposed on the stretching cross plate 303a.

[0073] The elastic element 303c includes an elastic slide bar 303c-1 disposed on the filter screen holder 301, a first sliding groove 303c-2 opened on the screening container 101, and an elastic spring 303c-3 sleeved on the elastic slide bar 303c-1. The elastic slide bar 303c-1 is symmetrically arranged on both sides of the screening container 101. It is fixedly connected to the filter screen holder 301 and slidably connected to the first sliding groove 303c-2. The elastic spring 303c-3 is disposed on the side of the elastic slide bar 303c-1 away from the screening container 101. It is used to increase the path of the filter screen body 302 during the shaking process, thereby facilitating the cleaning of the filter screen body 302.

[0074] Furthermore, the positioning component 303d includes a positioning bracket 303d-1 disposed on the screening support 102, a positioning adsorption plate 303d-2 disposed on the positioning bracket 303d-1, and a limiting bracket 303d-3 disposed on the screening container 101. The positioning bracket 303d-1 is symmetrically arranged on the screening support 102. The contact position between the positioning adsorption plate 303d-2 and the limiting adsorption block 303d-4 is made of magnetic material. The limiting bracket 303d-3 is disposed above the stretching cross plate 303a and is used to limit the positioning component 303d.

[0075] Furthermore, the stretching cross plate 303a also includes a limiting plate 303a-1, a limiting slide rod 303a-2, a limiting spring 303a-3, and a limiting suction block 303a-4. The limiting plate 303a-1 is disposed on the stretching cross plate 303a, the limiting slide rod 303a-2 is disposed at both ends of the limiting plate 303a-1, the limiting spring 303a-3 is sleeved on the limiting slide rod 303a-2, and the limiting suction block 303a-4 is disposed at one end of the limiting slide rod 303a-2. The limiting plate 303a-1 is disposed above the stretching cross plate 303a, and the stretching cross plate 303a has a limiting clip adapted to the limiting plate 303a-1. The limiting plate 303a-1 and the limiting slot are slidably connected. The end of the limiting plate 303a-1 extends into the limiting slot. The cross section of the limiting plate 303a-1 is a right trapezoidal shape, with one triangular end extending into the limiting slot. The limiting slide rod 303a-2 is fixedly connected to the stretching cross plate 303a. The limiting slide rod 303a-2 and the limiting bracket 303d-3 are slidably connected. The limiting spring 303a-3 is sleeved on the limiting slide rod 303a-2 near one end of the stretching cross plate 303a. The limiting adsorption block 303a-4 is located at the end of the limiting slide rod 303a-2 near the positioning adsorption plate 303d-2.

[0076] When the screening container 101 flips along the junction point to empty the large particles on the filter screen body 302, during the flipping process, the limiting plate 303a-1 on the stretching cross plate 303a begins to approach the positioning adsorption plate 303d-2 on the limiting bracket 303d-3. This continues until the limiting adsorption block 303a-4 reaches the height that the positioning adsorption plate 303d-2 can adsorb. At this point, the positioning adsorption plate 303d-2 begins to adsorb the limiting adsorption block 303a-4, causing the limiting plate 303a-1, driven by the limiting adsorption block 303a-4, to be pulled out of the limiting slot. Simultaneously, the limiting slide rod 303a-2 compresses the limiting spring 303a-3 to store force. Once the stretching cross plate 303a is no longer limited by the limiting plate 303a-1, the filter screen bracket 301 remains in place. The movement gap allows the mesh on the filter body 302 to deform under gravity. With the vibration of the vibrating motor, some particles stuck in the mesh can be peeled off the filter body 302. The blockage of the filter body 302 can also be resolved in time after the screening container 101 is emptied. During the slow reset process of the screening container 101, the clamping adsorption plate 303d-2 is still connected to the limiting adsorption block 303a-4 until it separates from the limiting adsorption block 303a-4. The elastic force of the limiting spring 303a-3 is released. At the same time, the limiting clamping plate 303a-1 is clamped on the stretching cross plate 303a to limit the stretching cross plate 303a. This allows the stretching cross plate 303a to straighten the filter body 302 through the filter clamping bracket 301, making it convenient for the filter body 302 to continue working.

[0077] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (e.g., variations in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0078] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments may be described, i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention.

[0079] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0080] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A coal transportation screening and discharge flow restriction device, characterized in that: include, The transmission mechanism (400) includes a transmission belt (401), a discharge rack (402) disposed on the transmission belt (401), a discharge hopper (403) disposed on the discharge rack (402), a flow limiting component (404) disposed on the discharge hopper (403), and a material sensing component (405) disposed on the flow limiting component (404). The flow limiting component (404) includes a flow control plate (404a) disposed on the discharge hopper (403), a flow control slider (404b) disposed on the flow control plate (404a), a material distribution groove (404c) opened on the discharge hopper (403), and a flipping component (404d) disposed on the flow control plate (404a). The flipping component (404d) includes a flipping bracket (404d-1) disposed on the discharge rack (402), a push rod (404d-2) disposed on the flipping bracket (404d-1), and a push chute (404d-3) disposed on the discharge hopper (403). The sensing component (405) includes a sensing plate (405a) disposed on the discharge hopper (403), a sensing rack (405b) disposed on the sensing plate (405a), a sliding member (405c) disposed on the sensing rack (405b), and a pushing member (405d) disposed on the sliding member (405c). The sliding member (405c) includes a push bracket (405c-1) disposed on the discharge hopper (403), a push slide rod (405c-2) disposed on the push bracket (405c-1), and a push spring (405c-3) disposed on the push slide rod (405c-2). The sensing rack (405b) and the push slide bar (405c-2) are slidably connected; The pusher (405d) includes an adsorption patch (405d-2) on the discharge hopper (403) and the flow control plate (404a) and an adsorption slider (405d-1) on the sensing rack (405b). The adsorption patch (405d-2) and the adsorption slider (405d-1) are compatible.

2. The coal transportation screening and discharge flow restriction device as described in claim 1, characterized in that: The screening component (100) includes a screening container (101) and a screening support (102), a feed hopper (103) disposed on the screening container (101), a collection hopper (104) disposed on the screening support (102), and a screening plate (105) disposed on the screening support (102). The adaptive component (200) includes a power assembly (201) disposed on the screening support (102), a detection assembly (202) disposed on the power assembly (201), and a flow control assembly (203) disposed on the detection assembly (202). The filter component (300) includes a filter holder (301) disposed in the screening container (101), a filter body (302) disposed on the filter holder (301), and an anti-clogging component (303) disposed on the filter body (302).

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