Negative suction and gravity settling system for cleaning coal cinder

Abstract

The utility model belongs to the technical field of residual coal cleaning, and particularly relates to a negative suction and gravity settling system for cleaning coal cinder, which comprises a negative suction mechanism and a gravity settling structure, the negative suction mechanism comprises a front rolling brush assembly and a rear rolling brush assembly which are located at the bottom of the coal storage box. In the sweeping advancing direction, the front end of the bottom of the negative suction mechanism is provided with a front rolling brush assembly matched with the vertical sweeping brush, the rear end of the bottom of the negative suction mechanism is provided with a rear rolling brush assembly, and the bottom of the negative suction mechanism is further provided with an air suction opening adjacent to the rear rolling brush assembly and located at the front end of the rear rolling brush assembly. The gravity settling structure comprises a gravity settling chamber located on the upper portion in the coal storage box and a residual coal collecting cavity located on the lower portion in the coal storage box, the air suction opening is communicated with the gravity settling chamber through a pipeline, and a plurality of partition plates which are alternately and obliquely arranged are arranged in the gravity settling chamber. Three cleaning processes are achieved in the single sweeping stroke, airflow turns multiple times through the partition plates arranged alternately and obliquely, residual coal is smoothly settled, the sweeping efficiency and the cleaning effect are improved, and environmental pollution is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of residual coal cleaning, and in particular relates to a negative suction and gravity sedimentation system for cleaning coal slag. Background Art

[0002] After unloading, coal trains often have residual coal left on the wagons. Since coal is a flammable item, the structure of coal is loose and there are bumps during transportation. In order to improve safety and prevent dust diffusion and environmental pollution, water needs to be sprinkled on the coal before transportation, which increases the stickiness and humidity of the coal. In the cold weather in the north in winter, the coal will also stick to the carriage during transportation, resulting in the residual amount of coal in the carriage exceeding 500kg when unloading. In order to clean up these residual coal, the commonly used method is mainly manual cleaning. The cleaning staff will open the carriage door, enter the carriage, use a shovel and a broom to sweep down the residual coal, and sweep it out from the side door of the carriage, so that it will be scattered beside the train track. After completing the cleaning, the cleaning staff will reseal the side door of the train carriage and collect the residual coal beside the track for transportation and disposal. However, this method has problems such as poor working environment, high labor intensity, and safety and environmental protection risks.

[0003] With the development of society, intelligent cleaning systems for train cargo compartments have gradually been developed. Intelligent cleaning systems for train cargo compartments can reduce the labor intensity of manual cleaning, and improve the cleaning effect and safety and environmental protection performance compared to manual cleaning. Most of the existing intelligent cleaning systems use the sweeping brush and roller brush at the front end of the cleaning system to gather the remaining coal on the side walls and bottom of the carriage, sweep it into the guide plate, and then enter the storage bin for collection. It is difficult to clean the remaining coal by relying on this structure alone, which will cause waste of remaining coal or require manual assistance for cleaning. There are also intelligent cleaning systems that first use a roller brush to clean and gather, and then suck the remaining coal into the storage bin through negative suction. The intelligent cleaning system has only one collection entrance, and the equipment needs to operate in the carriage many times to clean it up. The sucked remaining coal is not easy to fall into the storage bin smoothly. Only a small part of the remaining coal falls into the storage bin. Most of the remaining coal will adhere to the filter, causing serious filter loss. Some of the remaining coal will also be extracted into the external environment with the fan, which will have a serious impact on environmental protection and cause the fan to get stuck.

[0004] Therefore, there is an urgent need for a system that can clean thoroughly, has high cleaning efficiency, reduces environmental pollution, and can effectively collect excess coal to solve the existing problems. Utility Model Content

[0005] In view of the defects of the prior art, the utility model proposes a negative suction and gravity sedimentation system for cleaning coal slag, which realizes three cleaning processes in sequence in a single residual coal cleaning stroke, and realizes that the airflow is turned multiple times in the collection process to impact the partition plate, and the residual coal is settled, so that the residual coal slides smoothly to the bottom of the coal storage box with the help of its own gravity, which not only improves the efficiency and cleaning effect of cleaning the residual coal, but also effectively reduces environmental pollution.

[0006] To achieve the above-mentioned purpose, the utility model provides a negative suction and gravity sedimentation system for cleaning coal slag, the negative suction and gravity sedimentation system is installed on a coal cleaning device, the coal cleaning device includes a coal storage box and a vertical sweeping brush located at the front end of the coal storage box; the negative suction and gravity sedimentation system includes a negative suction mechanism and a gravity sedimentation structure;

[0007] The negative suction mechanism includes a front roller brush assembly and a rear roller brush assembly located at the bottom of the coal storage box; along the forward cleaning direction, the front roller brush assembly that cooperates with the vertical sweeping brush is arranged at the bottom front end of the negative suction mechanism, and the rear roller brush assembly is arranged at the bottom rear end of the negative suction mechanism, and the bottom of the negative suction mechanism is also provided with a suction port adjacent to the rear roller brush assembly and located at the front end of the rear roller brush assembly; the gravity sedimentation structure includes a gravity sedimentation chamber located above the interior of the coal storage box and a residual coal collection chamber located below the interior of the coal storage box, the suction port is connected to the gravity sedimentation chamber through a pipe, and the interior of the gravity sedimentation chamber has a plurality of alternating inclined partitions that make the airflow sucked in by the suction port turn multiple times.

[0008] Furthermore, the negative suction mechanism comprises a negative suction lifting assembly installed at the bottom of the coal storage box; the negative suction lifting assembly comprises a rear baffle, a suction panel and a front baffle; the rear baffle is installed at the rear end edge of the rear roller brush assembly, the suction panel is located at the front end of the rear sweeping brush, and the front baffle is installed at the front end edge of the suction panel; a suction port is opened on the suction panel;

[0009] The gravity sedimentation structure is an independent negative pressure cavity. When the residual coal and air enter the gravity sedimentation chamber through the suction port of the negative suction lifting component, the airflow is turned through a plurality of alternately inclined partitions so that the residual coal hits the partition and then slides down to the residual coal collection chamber under its own gravity. The airflow is drawn away from the outside of the gravity sedimentation structure under the action of negative pressure.

[0010] Furthermore, there are at least two of the plurality of alternately inclined partitions, and the slope surface of the partition located above faces the slope surface of the partition below it.

[0011] Furthermore, the negative suction lifting assembly also includes an intermediate baffle; the bottom surface shape of the suction port is formed by the intersection of a circle and a rectangle, and the intersection is provided with an intermediate baffle that divides the circle and rectangle of the bottom surface of the suction port into two openings, and the intermediate baffle is installed at the bottom of the suction panel.

[0012] Furthermore, the rear baffle, the front baffle and the middle baffle are arranged obliquely, and the sloped surfaces of the rear baffle and the front baffle face the direction of the suction port; the sloped surface of the middle baffle faces the sloped surface of the rear baffle.

[0013] Furthermore, the two sides of the rear baffle, the front baffle and the middle baffle are connected by a enclosure, and the space enclosed by the front baffle, the middle baffle and the enclosure is used for synchronously cleaning wet coal by negative pressure suction and the rear sweeping brush, and the space enclosed by the rear baffle, the middle baffle and the enclosure is used for cleaning coal slag and coal powder that are not cleaned by the front sweeping brush by negative pressure suction.

[0014] Furthermore, the negative suction lifting assembly also includes a buffer support structure connected to the coal storage box.

[0015] Furthermore, the negative suction lifting assembly is connected to the coal storage box in a lifting manner.

[0016] Furthermore, the gravity sedimentation structure has two symmetrically arranged ones, the negative suction lifting assembly is provided with suction ports matching the two gravity sedimentation structures, the gravity sedimentation structures are symmetrically arranged on both sides inside the coal storage box, and a negative pressure fan is installed on the top of the coal storage box.

[0017] Furthermore, the bottoms of the rear baffle, the front baffle and the middle baffle are provided with wear-resistant rubber strips.

[0018] The beneficial effects of the utility model are:

[0019] First, the negative suction and gravity sedimentation system for cleaning coal slag of the utility model comprises a negative suction mechanism and a gravity sedimentation structure, through which the negative suction mechanism can realize three cleaning processes in sequence in a single cleaning stroke of residual coal, thereby improving the efficiency and cleaning effect of residual coal cleaning; the partitions alternately distributed in the gravity sedimentation structure can allow the airflow to turn multiple times and impact the partitions to make the residual coal settle, so that the residual coal can smoothly slide to the bottom of the coal storage box with the help of its own gravity, thereby preventing residual coal particles from entering the filter and the negative suction fan under the action of negative suction, and reducing the residual coal dust from entering the filter, thereby effectively reducing the loss of the filter element, greatly reducing the pollution caused by coal powder and particles entering the external environment, and improving environmental protection;

[0020] Second, in the preferred implementation, the space enclosed by the front baffle, the middle baffle and the enclosure of the utility model is used for the negative pressure suction and the rear roller brush to clean the wet coal synchronously, and the space enclosed by the rear baffle, the middle baffle and the enclosure is used for cleaning the coal slag and coal powder that are not cleaned by the front roller brush by negative pressure suction. The rear baffle, the suction panel, the front baffle and the middle baffle work together with the front roller brush assembly, so that the negative suction lifting assembly realizes three cleaning processes in sequence along the cleaning direction, thereby improving the efficiency and cleaning effect of cleaning the residual coal;

[0021] Third, in the preferred implementation, the bottom of the negative suction lifting assembly of the utility model is provided with a roller brush at the front and rear, and most of the residual coal gathered by the vertical sweeping brush can be collected in the coal storage box through the front roller brush, and the rear roller brush cooperates with the negative suction of the suction nozzle to not only collect dry residual coal and coal powder, but also collect wet coal through the rear roller brush, thereby further improving the collection efficiency of residual coal;

[0022] Fourth, in the preferred implementation, the gravity settling structure of the utility model has two symmetrically arranged, and the negative suction lifting component is provided with air suction ports matching the two gravity settling structures. The number of air suction ports of the gravity settling structure and the negative suction lifting component can be set according to the layout requirements to improve the negative suction and gravity settling efficiency;

[0023] Fifth, in a preferred implementation, the negative suction lifting assembly of the utility model is connected to the coal storage box in a lifting manner, and the distance between the air suction port and the bottom surface of the carriage can be adjusted according to the particle size and thickness of the residual coal in the bottom surface of the carriage;

[0024] Sixth, in the preferred implementation, the buffer support structure of the utility model is connected to the coal storage box, which solves the problem of the negative suction lifting component not being properly controlled and colliding with the coal storage box when rising. At the same time, the highest point is limited to provide support for the negative suction lifting component during the lifting movement, ensuring the smoothness of the lifting movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a top view of the dry and wet residual coal cleaning device of an embodiment of the utility model;

[0026] Figure 2 yes Figure 1 AA cross-sectional view;

[0027] Figure 3 It is a three-dimensional structural diagram of a coal storage box according to an embodiment of the utility model;

[0028] Figure 4 yes Figure 3 Cross-sectional view of BB

[0029] Figure 5 It is a schematic diagram of the negative suction and gravity sedimentation process of the negative suction and gravity sedimentation system for cleaning coal slag according to an embodiment of the utility model;

[0030] Figure 6 It is the three-dimensional structure of the negative suction lifting component of the embodiment of the utility model Figure 1 ;

[0031] Figure 7 It is the three-dimensional structure of the negative suction lifting component of the embodiment of the utility model Figure 2 ;

[0032] Figure 8 It is a three-dimensional structural diagram of the air suction panel of an embodiment of the utility model.

[0033] Among them, 1-negative suction mechanism; 10-negative suction lifting assembly; 100-rear roller brush assembly; 101-suction nozzle; 102-hydraulic cylinder; 103-pull ring; 104-buffer rod; 105-front roller brush assembly; 106-joint connecting rod group; 107-rear baffle; 108-air suction panel; 1080-suction port; 109-front baffle; 11-negative suction pipe; 12-negative pressure fan; 2-gravity sedimentation structure; 20-gravity sedimentation chamber; 21-air guide plate; a1-first partition plate; a2-second partition plate; a3-residual coal collection chamber; C-coal storage box; 21a-example air guide plate one; 21b-example air guide plate two. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] The terms such as up, down, left, right, front and back in this application document are based on the positional relationships shown in the drawings. If the drawings are different, the corresponding positional relationships may also change accordingly, so they cannot be understood as limiting the scope of protection.

[0036] In this application, the terms "install", "connected", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, or mutual communication, a direct connection, or an indirect connection through an intermediate medium, the internal connection of two components, or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The utility model describes a negative suction and gravity sedimentation system for cleaning coal slag, which is installed on a dry and wet residual coal cleaning device and is used to clean dry and wet residual coal in a carriage, and includes a negative suction mechanism and a gravity sedimentation structure. The bottom of the negative suction mechanism acts on the bottom surface of the carriage, and the bottom of the negative suction mechanism also has a lifting structure for adjusting the distance between the front and rear roller brush assemblies and the suction port and the bottom surface of the carriage. Along the forward direction of cleaning, the bottom front end of the negative suction mechanism is provided with a front roller brush assembly that cooperates with the vertical sweeping brush of the dry and wet residual coal cleaning equipment. The vertical sweeping brush sweeps the residual coal on the wall of the carriage and gathers the residual coal on the bottom to the front end of the front roller brush assembly, and the front roller brush assembly sweeps the gathered residual coal into the bucket of the dry and wet residual coal cleaning equipment; the bottom rear end of the negative suction mechanism is provided with a rear roller brush assembly, and the front roller brush assembly and the rear roller brush assembly are located at the bottom of the coal storage box; the bottom of the negative suction mechanism also has an air suction port adjacent to the rear roller brush assembly and located at the front end of the rear roller brush assembly; the gravity sedimentation structure includes a gravity sedimentation chamber located above the interior of the coal storage box and a residual coal collection chamber located below the interior of the coal storage box, the air suction port is connected to the gravity sedimentation chamber through a pipeline, and the bottom rear end of the negative suction mechanism is used to first sweep the dry and wet residual coal that has not been cleaned up at its front end to the air suction port through the rear roller brush, and then the residual coal is sucked into the gravity sedimentation structure by negative pressure through the air suction port. The gravity sedimentation structure is an independent negative pressure cavity structure, which has a gravity sedimentation chamber, a negative pressure fan connected to the upper part of the gravity sedimentation chamber, and a residual coal collection chamber connected to the lower part of the gravity sedimentation chamber. The interior of the gravity sedimentation chamber has multiple alternating inclined partitions, and the multiple alternating inclined partitions are used to turn the airflow multiple times, so that the inhaled residual coal alternately impacts the partitions and finally falls into the residual coal collection chamber relying on its own gravity.

[0038] Example 1

[0039] Refer to the instruction manual Figure 1-5 A negative suction and gravity settling system for cleaning coal slag includes a negative suction mechanism 1 and a gravity settling structure 2. The negative suction mechanism 1 includes a negative suction lifting assembly 10, a negative suction pipe 11 and a negative pressure fan 12. The gravity settling structure 2 includes a gravity settling chamber 20 and a wind guide plate 21.

[0040] The negative suction lifting assembly 10 is installed at the bottom of the coal storage box C and is connected to the coal storage box C. The negative suction lifting assembly 10 has an air suction port, one end of which faces the adsorption surface, and the other end is connected to the gravity settling chamber 20 through the negative suction pipe 11. The gravity settling chamber 20 is an independent chamber in the coal storage box C. The negative pressure fan 12 is installed on the top surface of the coal storage box C and is connected to the gravity settling chamber 20. The negative suction pipe 11 extends from the air suction port of the negative suction lifting assembly 10 below to the top of the gravity settling chamber 20. The gravity settling chamber 20 has a residual coal collection chamber below.

[0041] It should be noted that in this embodiment, the negative suction pipe 11 and the air suction port of the negative suction lifting assembly 10 are connected by a hose. Figure 2 The hose can be a bellows, which can stretch and contract, so as to provide a certain amount of movement when the negative suction lifting assembly 10 is lifted or lowered.

[0042] There are multiple air guide plates 21, which are alternately tilted and arranged above the gravity settling chamber 20 and below the top opening of the negative suction pipe 11, and the slope surface of each air guide plate 21 faces the slope surface of the air guide plate 21 below it. In this embodiment, there are at least two air guide plates 21, such as Figure 4 The example air guide plate 1 21a and the example air guide plate 2 21b are shown, and the coal storage box C is also provided with a first partition plate a1 and a second partition plate a2.

[0043] The following is attached through the instruction manual Figure 5 The negative suction and gravity settling process of the negative suction and gravity settling system for cleaning coal slag is explained.

[0044] Figure 5 The solid arrow in the middle indicates the direction of wind flow, and the dotted arrow indicates the direction of residual coal settling. When the negative pressure fan 12 is working, the residual coal and air enter the negative suction pipe 11 through the air suction port of the negative suction lifting assembly 10, and enter the gravity settling chamber 20 at the top opening of the negative suction pipe 11. The side wall of the gravity settling chamber 20 is blocked by the first partition a1, the second partition a2 and the outer wall of the coal storage box C. The airflow can only hit the air guide plate 21 in turn in the gravity settling chamber 20. The slope surface of the upper air guide plate 21 faces the slope surface of the lower air guide plate 21, so that the airflow turns many times. After the residual coal hits the air guide plate 21, it slides smoothly down to the residual coal collection chamber a3 at the bottom of the coal storage box C by its own gravity. Under the action of the negative pressure fan 12, the airflow flows from one side of the second partition plate a2 from the bottom end of the second partition plate a2 to the other side of the second partition plate a2, and finally is drawn out of the gravity settling structure by the negative pressure fan 12.

[0045] Furthermore, the number of the gravity sedimentation structure 2, the air suction port of the negative suction lifting component 10, the negative suction pipe 11 and the negative pressure fan 12 can be set according to the layout requirements. The gravity sedimentation structure 2 of this embodiment has two symmetrically arranged air suction ports, two negative suction pipes 11 and two negative pressure fans 12 matching the two gravity sedimentation structures 2 are opened on the negative suction lifting component 10. The gravity sedimentation structure 2 can be symmetrically arranged on both sides of the coal storage box C. The top of the coal storage box C is provided with two openings for installing the negative pressure fan 12. The two air suction ports and the negative suction pipe 11 are arranged according to the position of the gravity sedimentation structure 2, which can improve the negative suction and gravity sedimentation efficiency.

[0046] By adopting the structure of this embodiment, the air flow can be turned multiple times through the alternately distributed air guide plates 21 in the gravity sedimentation structure 2, impacting the partition plate, so that the residual coal is settled, and the residual coal can slide smoothly to the bottom of the coal storage box with the help of its own gravity, thereby preventing the residual coal particles from entering the filter and the negative suction fan under the action of negative suction, and reducing the residual coal dust from entering the filter, effectively reducing the loss of the filter element, greatly reducing the pollution caused by coal powder and particulate matter entering the external environment, and improving environmental protection.

[0047] Example 2

[0048] Refer to the instruction manual Figure 6 On the basis of Example 1, the negative suction lifting assembly 10 includes a rear roller brush assembly 100, a suction nozzle 101, a front roller brush assembly 105 and a connecting beam.

[0049] The rear roller brush assembly 100 and the front roller brush assembly 105 are connected by connecting beams on both sides. The rear roller brush assembly 100 includes a rear roller brush, a first drive motor for driving the rear roller brush to rotate, and a suction nozzle connecting plate. Both ends of the suction nozzle connecting plate are installed on the connecting beams on both sides. The suction nozzle connecting plate is arranged adjacent to the rear roller brush and is located at the front end of the rear roller brush. The suction nozzle connecting plate has an opening. The suction nozzle 101 is fixed at the top opening of the suction nozzle connecting plate. The suction nozzle 101 is connected to the negative suction pipe 11 through a hose.

[0050] The front roller brush assembly 105 includes a front roller brush and a second driving motor that drives the front roller brush to rotate. The front roller brush assembly 105 of this embodiment is arranged between the vertical sweeping brush and the bucket of the dry and wet residual coal cleaning equipment.

[0051] The front roller brush rotates clockwise to sweep the residual coal gathered by the vertical sweeping brush into the bucket. The rear roller brush rotates counterclockwise to sweep the residual coal that has not been cleaned at the front end into the suction nozzle 101, so that the residual coal can smoothly enter the suction nozzle 101 and the negative suction pipe 11.

[0052] The negative suction lifting assembly 10 also includes rollers, which are installed on the connecting beams on both sides.

[0053] By adopting the structure of this embodiment, a roller brush is provided at the front and rear of the bottom of the negative suction lifting assembly 10. Most of the residual coal gathered by the vertical sweeping brush can be collected in the coal storage box through the front roller brush. Through the cooperation of the rear roller brush and the negative suction of the suction nozzle 101, not only dry residual coal and coal powder can be collected, but also wet coal can be collected through the rear roller brush, thereby further improving the collection efficiency of residual coal.

[0054] Example 3

[0055] This embodiment includes all the structures of the embodiment 2, and the negative suction lifting assembly 10 further includes a hydraulic cylinder 102 and a buffer support structure connected to the coal storage box C. The buffer support structure includes a pull ring 103 , a buffer rod 104 and a joint connecting rod group 106 .

[0056] There are two symmetrically arranged hydraulic cylinders 102 and articulated connecting rod groups 106. One end of the push rod of each hydraulic cylinder 102 is installed on a connecting beam of a negative suction lifting assembly 10 through a bracket, and its cylinder housing is connected to the corresponding position of the coal storage box C through the bracket, which is used to control the lifting movement of the entire negative suction lifting assembly 10. One end of each articulated connecting rod group 106 is rotatably connected to both sides of the top surface of the connecting beam of the negative suction lifting assembly 10 through a bracket, and the other end is rotatably connected to the corresponding position of the coal storage box C through a bracket. The brackets at both ends of the articulated connecting rod group 106 are rotatably connected to the connecting beam of the negative suction lifting assembly 10 and the coal storage box C through a pin shaft.

[0057] There are four buffer rods 104, and one buffer rod 104 is set at the front and rear positions of the connecting beam of each negative suction lifting assembly 10. One end of the buffer rod 104 is connected to the bottom of the coal storage box C, and the other end is provided with a buffer block. The buffer block can be made of rubber material and is used to limit and buffer the upward movement of the negative suction lifting assembly 10. The buffer block and the rod are connected by threads.

[0058] There are eight pull rings 103, of which four pull rings 103 are respectively installed on the connecting beam of the negative suction lifting assembly 10 near the four buffer rods 104, and the remaining four pull rings 103 are respectively located in the square of the four pull rings 103 below and installed on the coal storage box C, and the corresponding pull rings 103 are connected in pairs by zippers.

[0059] By adopting the structure of this embodiment, the distance between the air suction port and the bottom surface of the carriage can be adjusted by the hydraulic cylinder 102 according to the particle size and thickness of the residual coal in the bottom surface of the carriage; the buffer rod 104 solves the problem of the negative suction lifting assembly 10 not being able to be controlled in place and colliding with the coal storage box when rising, and at the same time limits the highest point, and the position of the buffer block can be adjusted by adjusting the threaded connection depth between the buffer block and the rod; the joint connecting rod group 106 is used to provide support for the negative suction lifting assembly 10 during the lifting movement to ensure the smoothness of the lifting movement; the pull ring 103 is used to provide auxiliary support for the lifting movement of the negative suction lifting assembly 10, and to limit the downward movement of the negative suction lifting assembly 10.

[0060] Example 4

[0061] Refer to the instruction manual Figure 7-8 On the basis of Example 2, the negative suction lifting assembly 10 also includes a rear baffle 107 , a suction panel 108 and a front baffle 109 .

[0062] The rear baffle 107 is installed at the rear edge of the rear roller brush assembly 100, and the air suction panel 108 is connected to the connecting beams on both sides of the negative suction lifting assembly 10 and the suction nozzle connecting plate of the rear roller brush assembly 100. The air suction panel 108 is provided with a suction port 1080, and the position of the suction port 1080 corresponds to the suction nozzle 101 on the suction nozzle connecting plate. The front baffle 109 is installed at the front edge of the air suction panel 108. The rear baffle 107 and the front baffle 109 are inclined, and their respective slope surfaces face the direction of the suction port 1080.

[0063] The bottom surface of the suction port 1080 is formed by the intersection of a circle and a rectangle, and an intermediate baffle is provided at the intersection. The intermediate baffle is installed at the bottom of the air suction panel 108 to divide the bottom surface of the suction port 1080 into two openings. The intermediate baffle is tilted, and the tilt angle is toward the slope surface of the rear baffle 107. The rear baffle 107, the front baffle 109 and the two sides of the intermediate baffle are connected by a panel, and the bottom of the rear baffle 107, the front baffle 109 and the intermediate baffle are in contact with the bottom surface of the carriage. The bottom of the rear baffle 107, the front baffle 109 and the intermediate baffle has a wear-resistant rubber strip to improve the wear resistance during the cleaning process.

[0064] With the structure of this embodiment, since wet coal is difficult to be cleaned only by roller brushes or only by negative pressure suction, the space enclosed by the front baffle 109, the middle baffle and the enclosure is used for the simultaneous cleaning of wet coal by negative pressure suction and the rear roller brush, and the space enclosed by the rear baffle 107, the middle baffle and the enclosure is used for cleaning the coal slag and coal powder that have not been cleaned by the front roller brush by negative pressure suction. The rear baffle 107, the suction panel 108, the front baffle 109 and the middle baffle work together with the front roller brush assembly, so that the negative suction lifting assembly 10 realizes three cleaning processes in sequence along the cleaning direction, thereby improving the efficiency of cleaning the residual coal and the cleaning effect.

[0065] The utility model realizes three cleaning processes in sequence in a single residual coal cleaning stroke, and realizes that during the collection process, the airflow is turned multiple times to impact the partition plate, and the residual coal is settled, so that the residual coal slides smoothly to the bottom of the coal storage box under its own gravity, which not only improves the residual coal cleaning efficiency and cleaning effect, but also effectively reduces environmental pollution.

[0066] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A negative suction and gravity sedimentation system for cleaning coal slag, wherein the negative suction and gravity sedimentation system is installed on a coal cleaning device, wherein the coal cleaning device comprises a coal storage box and a vertical sweeping brush located at the front end of the coal storage box; characterized in that: The negative suction and gravity sedimentation system comprises a negative suction mechanism (1) and a gravity sedimentation structure (2); The negative suction mechanism (1) comprises a front roller brush assembly (105) and a rear roller brush assembly (100) located at the bottom of the coal storage box; along the forward direction of cleaning, the front roller brush assembly (105) cooperating with the vertical sweeping brush is arranged at the bottom front end of the negative suction mechanism (1), and the rear roller brush assembly (100) is arranged at the bottom rear end of the negative suction mechanism (1); the bottom of the negative suction mechanism (1) is also provided with an air suction port adjacent to the rear roller brush assembly (100) and located at the front end of the rear roller brush assembly (100); the gravity sedimentation structure comprises a gravity sedimentation chamber located above the interior of the coal storage box and a residual coal collection chamber located below the interior of the coal storage box, the air suction port is connected to the gravity sedimentation chamber through a pipeline, and the interior of the gravity sedimentation chamber has a plurality of alternately inclined partitions that make the airflow sucked in by the air suction port turn multiple times.

2. The negative suction and gravity sedimentation system for cleaning coal slag according to claim 1, characterized in that: The negative suction mechanism (1) comprises a negative suction lifting assembly (10) installed at the bottom of the coal storage box; the negative suction lifting assembly (10) comprises a rear baffle (107), a suction panel (108) and a front baffle (109); the rear baffle (107) is installed at the rear end edge of the rear roller brush assembly (100), the suction panel (108) is located at the front end of the rear sweeping brush, and the front baffle (109) is installed at the front end edge of the suction panel (108); the suction panel (108) is provided with a suction port (1080); The gravity sedimentation structure is an independent negative pressure cavity. When the residual coal and air enter the gravity sedimentation chamber through the air suction port of the negative suction lifting component (10), the airflow is turned through a plurality of alternately inclined partitions so that the residual coal impacts the partition and then slides down to the residual coal collection chamber by its own gravity. The airflow is drawn away from the outside of the gravity sedimentation structure under the action of negative pressure.

3. The negative suction and gravity sedimentation system for cleaning coal slag according to claim 1, characterized in that: There are at least two of the multiple alternately inclined partitions, and the slope surface of the partition located above faces the slope surface of the partition below it.

4. The negative suction and gravity sedimentation system for cleaning coal slag according to claim 2, characterized in that: The negative suction lifting component (10) also includes an intermediate baffle; the bottom surface shape of the suction port (1080) is formed by the intersection of a circle and a rectangle, and the intersection is provided with the intermediate baffle that divides the circle and rectangle of the bottom surface of the suction port (1080) into two openings, and the intermediate baffle is installed at the bottom of the suction panel (108).

5. The negative suction and gravity sedimentation system for cleaning coal slag according to claim 4, characterized in that: The rear baffle (107), the front baffle (109) and the middle baffle are arranged at an angle, and the slope surfaces of the rear baffle (107) and the front baffle (109) face the direction of the suction port (1080); the slope surface of the middle baffle faces the slope surface of the rear baffle (107).

6. The negative suction and gravity sedimentation system for cleaning coal slag according to claim 5, characterized in that: The two sides of the rear baffle (107), the front baffle (109) and the middle baffle are connected by a enclosure; the space enclosed by the front baffle (109), the middle baffle and the enclosure is used for cleaning wet coal synchronously by negative pressure suction and the rear sweeping brush; the space enclosed by the rear baffle (107), the middle baffle and the enclosure is used for cleaning coal slag and coal powder that are not cleaned by the front sweeping brush by negative pressure suction.

7. The negative suction and gravity sedimentation system for cleaning coal slag according to claim 2, characterized in that: The negative suction lifting assembly (10) also includes a buffer support structure connected to the coal storage box.

8. The negative suction and gravity sedimentation system for cleaning coal slag according to claim 2, characterized in that: The negative suction lifting component (10) is connected to the coal storage box in a lifting manner.

9. The negative suction and gravity sedimentation system for cleaning coal slag according to claim 2, characterized in that: The gravity settling structures (2) are symmetrically arranged with two of them, and the negative suction lifting component (10) is provided with air suction ports matching the two gravity settling structures (2). The gravity settling structures (2) are symmetrically arranged on both sides of the coal storage box, and a negative pressure fan is installed on the top of the coal storage box.

10. The negative suction and gravity sedimentation system for cleaning coal slag according to claim 4, characterized in that: The bottoms of the rear baffle (107), the front baffle (109) and the middle baffle are provided with wear-resistant rubber strips.

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