Self-arch-breaking anti-blocking discharging device for coal slime

Abstract

A coal slime self-arch-breaking anti-blocking discharging device comprises a filter press and a scraper, a discharging bin is arranged between the filter press and the scraper, and the discharging bin comprises an upper sliding section, an arch-breaking sliding section and a lower sliding section which are of an integrated structure; an arch breaking device is arranged on the arch breaking chute section and comprises a plurality of coal pushing frame sets which are arranged on the inner wall of the arch breaking chute section and arranged at intervals in the length direction of the arch breaking chute section, and each coal pushing frame comprises a transmission transverse frame and an arch breaking scraper. The transmission transverse frame is connected with a stroke device used for controlling the coal pushing frame to move back and forth in the length direction of the arch breaking sliding section. The coal slime storage device overcomes the defect that coal slime stored in a coal plant can only be stockpiled on the ground or directly blended. And secondly, the arch breaking device is designed on the arch breaking chute section, and the arch breaking operation can be performed on the coal slime stored in the discharging bin by utilizing the arch breaking device, so that not only can the blockage of the coal slime in the discharging process be effectively prevented, but also the coal slime in the discharging bin can be continuously conveyed to a scraper conveyor, and the purpose of continuous discharging is achieved.

Description

Technical Field

[0001] The utility model relates to the field of coal washing, processing and clean utilization, in particular to a coal slime self-arch breaking and anti-blocking unloading device. Background Art

[0002] Coal slime is a low calorific value byproduct produced after washing and processing in coal preparation plants. It has the characteristics of high viscosity, high moisture content, easy agglomeration, and poor natural fluidity. Therefore, coal preparation plants can only store coal slime on the ground or directly blend it, and cannot enter the warehouse, otherwise it is easy to block the warehouse and cannot be unloaded; in addition, the chute under the filter press is sometimes blocked due to the stickiness of coal slime, and it causes many chain reactions such as "frozen car body" during transportation. On the one hand, the traditional coal slime hopper and the chute under the filter press lack the ability to break the arch and prevent blocking, and can only play the role of conveying materials; on the other hand, the coal slime has high moisture content, high ash content, and strong viscosity. After blending, it is easy to freeze into blocks in winter when it enters the coal storage yard, which also increases the difficulty of loading and transportation. For many years, due to the problems existing in the above links, coal preparation plants can only store coal slime on the ground, and reduce the harm of coal slime storage to the environment by reducing the amount of blending or selling it separately on the ground, which is not conducive to maximizing economic benefits and production management. It is urgent to find a reasonable solution to the above technical problems. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a coal slime self-arch breaking and anti-blocking unloading device. According to the industry demand, a coal slime storage anti-blocking technology is developed and applied to the coal slime unloading link, which can realize continuous feeding of coal slime without blockage, on the one hand, improving the stability of product quality; on the other hand, it also reduces the occurrence of blockage, "frozen car body" and other phenomena.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A coal slime self-arch breaking and anti-blocking unloading device comprises a filter press and a scraper, wherein a discharge bin is arranged between the filter press and the scraper, and the discharge bin comprises an upper chute section, an arch breaking chute section and a lower chute section which are integrated with each other; the upper chute section is installed at the discharge port of the filter press and is perpendicular to the bridge deck of the filter press, the arch breaking chute section is inclined inwardly and forms an angle of 10°-25° with the vertical direction, and the lower chute section extends downward to the top of the scraper, and the width of the lower chute section is the same as the width of the scraper groove;

[0006] The arch-breaking chute section is provided with an arch-breaking device, the arch-breaking device comprises a plurality of coal-pushing rack groups which are arranged on the inner wall of the arch-breaking chute section and spaced apart along the length direction of the arch-breaking chute section, the coal-pushing rack groups comprise a plurality of coal-pushing racks which are arranged along the width direction of the arch-breaking chute section, the coal-pushing rack comprises a transmission cross frame and an arch-breaking scraper, the transmission cross frame is arranged along the length direction of the arch-breaking chute section, the arch-breaking scraper comprises a plurality of arch-breaking scrapers spaced apart on the transmission cross frame; a stroke device for controlling the coal-pushing rack to move back and forth along the length direction of the arch-breaking chute section is connected to the transmission cross frame, the maximum stroke of the stroke device being less than or equal to the spacing between two adjacent coal-pushing rack groups.

[0007] In the above-mentioned utility model, further, the stroke device includes a hydraulic cylinder and a push rod connected to the telescopic end of the hydraulic cylinder, a connecting plate is welded on the push rod, a pull rod is fixed to the connecting plate by bolts, a stroke groove is provided on the outer wall of the arch-breaking slide section, the pull rod passes through the stroke groove and is fixedly connected to the transmission cross frame, and the length of the stroke groove is greater than or equal to the maximum telescopic stroke of the hydraulic cylinder.

[0008] In the above utility model, further, the push rod is a square steel structure, and the outer wall of the arch-breaking slide section is fixed with a first guide wheel and a second guide wheel through a base, the first guide wheel is rollingly matched with the side wall of the push rod, and the second guide wheel is rollingly matched with the bottom surface of the push rod.

[0009] In the above utility model, further, the transmission cross frame is a concave structure, the pull rod passes through the stroke groove and is fixedly connected to the bottom wall of the inner cavity of the concave structure, the arch-breaking scraper is an angle steel, and the arch-breaking scraper performs mud scraping operations through the edges of the angle steel.

[0010] In the above utility model, further, a wear-resistant lining is provided on the inner wall of the arch-breaking chute section, and a limit baffle placed in the inner cavity of the concave-shaped structure is fixed on the wear-resistant lining.

[0011] In the above utility model, further, support frames are welded on the outer walls of both sides of the arch-breaking chute section, and the discharge silo is fixedly installed on the ground through the support frames.

[0012] In the above utility model, further, reinforcing connecting ribs are welded between the inner walls on both sides of the arch-breaking chute section.

[0013] The beneficial effects of the utility model are:

[0014] The utility model sets a discharge silo between the discharge port of the filter press and the scraper, so that the coal slime discharged from the filter press can be stored, which overcomes the disadvantage that the coal slime in the coal plant can only be stored on the ground or directly blended. Secondly, the utility model designs an arch-breaking chute section on the discharge silo and an arch-breaking device on the arch-breaking chute. The arch-breaking device can be used to break the coal slime stored in the discharge silo, which can not only effectively prevent the coal slime from being blocked during the unloading process, but also continuously transport the coal slime in the discharge silo to the scraper to achieve the purpose of continuous unloading. It effectively reduces the occurrence of silo blockage, "frozen car body" and other phenomena, and can also ensure that the coal slime is blended more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the utility model;

[0018] Figure 4 for Figure 1 A partial enlarged view of part A;

[0019] Figure 5 Another perspective view of the present utility model;

[0020] Figure 6 for Figure 5 A partial enlarged view of part B.

[0021] In the figure, 1-filter press, 2-scraper, 3-discharging silo, 3.1-upper chute, 3.2-arch breaking chute, 3.3-lower chute, 4-arch breaking device, 4.1-coal pushing rack group, 4.10-coal pushing rack, 4.11-transmission cross frame, 4.12-arch breaking scraper, 5-stroke device, 5.1-hydraulic cylinder, 5.2-push rod, 5.3-connecting plate, 5.4-pull rod, 6-base, 7-wear-resistant lining, 8-limit baffle, 9-support frame, 10-strengthening connecting ribs. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0024] Example:

[0025] A coal slime self-breaking arch anti-blocking unloading device, see attached Figure 1 As shown, it includes a filter press 1 and a scraper 2, a discharge bin 3 is arranged between the filter press 1 and the scraper 2, the discharge bin 3 is used to store the coal slime after dehydration of the filter press, and the scraper 2 is used to output the coal slime in the discharge bin 3, the discharge bin 3 includes an upper chute section 3.1, an arch-breaking chute section 3.2 and a lower chute section 3.3 which are integrated with each other; the upper chute section 3.1 is installed at the discharge port of the filter press 1 and is perpendicular to the bridge deck of the filter press, the lower chute section 3.3 extends downward to the top of the scraper 2 and the width of the lower chute section is 3.3 degrees, which is the same as the width of the scraper 2 groove, the arch-breaking chute section 3.2 is inclined inwardly and is preferably set to an angle of 10°-25° with the vertical direction, on the one hand, so that the coal slime in the discharge bin 3 can fall into the lower chute section 3.3 more easily. On the other hand, it is convenient to install the arch breaking device 4 on the inclined inner wall of the arch breaking chute section 3.2. Secondly, support frames 9 are welded on the outer walls on both sides of the arch breaking chute section 3.2, and the discharge silo 3 is fixedly installed on the ground through the support frames 9. Reinforced connecting ribs 10 are welded between the inner walls on both sides of the arch breaking chute section 3.2 to improve the practical strength of the discharge silo 3.

[0026] For details, see the attached Figure 2 As shown, the arch breaking device 4 includes a plurality of coal pusher groups 4.1 arranged on the inner wall of the arch breaking chute section 3.2 and spaced apart along the length direction of the arch breaking chute section 3.2. Figure 3 As shown, the coal pusher group 4.1 includes a plurality of coal pushers 4.10 arranged along the width direction of the arch-breaking chute section, the coal pusher 4.10 includes a transmission cross frame 4.11 and an arch-breaking scraper 4.12, the transmission cross frame 4.11 is arranged along the length direction of the arch-breaking chute section 3.2, and the arch-breaking scraper 4.12 includes a plurality of arch-breaking scrapers 4.12 spaced apart on the transmission cross frame 4.11; continue to refer to the attached Figure 1 As shown, the transmission cross frame 4.11 is connected with a travel device 5 for controlling the coal pusher 4.10 to move back and forth along the length direction of the arch breaking chute section 3.2. The maximum travel of the travel device 5 is less than or equal to the distance between two adjacent coal pusher groups 4.1 to prevent collision between the two adjacent coal pusher groups 4.1.

[0027] For details, see the attached Figure 4As shown, the travel device 5 includes a hydraulic cylinder 5.1 and a push rod 5.2 connected to the telescopic end of the hydraulic cylinder 5.1. A connecting plate 5.3 is welded to the push rod 5.2. The connecting plate 5.3 is fixed with a pull rod 5.4 by bolts. Please refer to the attached Figure 5 and attached Figure 6 As shown, a travel groove 3.4 is provided on the outer wall of the arch-breaking chute section 3.2, and the pull rod 5.4 passes through the travel groove 3.4 and is fixedly connected to the transmission cross frame 4.11. When the telescopic end of the hydraulic cylinder 5.1 is extended, the push rod 5.2 is driven to move forward, and then the pull rod 5.4 is driven to move forward along the travel groove 3.4. During the forward movement of the pull rod 5.4, the transmission cross frame 4.11 can be driven to move forward, and finally the coal pusher 4.10 can be driven to move forward. Similarly, when the hydraulic cylinder 5.1 is retracted, the coal pusher 4.10 can be driven to move backward. Finally, the effect of controlling the coal pusher 4.10 to move back and forth along the length direction of the arch-breaking chute section 3.2 is achieved by extending and retracting the hydraulic cylinder 5.1. Accordingly, the length of the travel groove 3.4 is greater than or equal to the maximum telescopic stroke of the hydraulic cylinder 5.1, so as to avoid the collision between the pull rod 5.4 and the end of the travel groove 3.4.

[0028] In the above embodiment, as a preferred embodiment, in order to ensure the stability of the push rod 5.2 during the movement, continue to refer to the attached Figure 4 and attached Figure 6 As shown, the push rod 5.2 is designed as a square steel structure, and the outer wall of the arch-breaking chute section 3.2 is fixed with a first guide wheel 5.5 and a second guide wheel 5.6 through a base 6, the first guide wheel 5.5 is in rolling cooperation with the side wall of the push rod 5.2, and the second guide wheel 5.6 is in rolling cooperation with the bottom surface of the push rod 5.2, thereby ensuring that the push rod 5.2 is more stable during the reciprocating motion.

[0029] Continue to refer to the attached Figure 4 and attached Figure 6 As shown, the transmission cross frame 4.11 is in a concave shape, and the pull rod 5.4 passes through the travel groove 3.4 and is fixedly connected to the bottom wall of the inner cavity of the concave structure. In this embodiment, the travel groove 3.4 is placed in the concave inner cavity of the transmission cross frame 4.11, which can effectively prevent the coal slime from leaking out through the travel groove 3.4. Secondly, the transmission cross frame 4.11 with a concave structure can effectively reduce the weight of the entire coal pusher 4.10, thereby reducing the workload of the hydraulic cylinder 5.1. Figure 3 As shown, the arch-breaking scraper 4.12 is an angle steel, and the two sides of the angle steel are fixed to the transmission cross frame 4.11. The arch-breaking scraper 4.12 performs mud scraping operation through the edge of the angle steel. Figure 4As shown, a wear-resistant lining plate 7 is arranged on the inner wall of the arch-breaking chute section 3.2 to enhance the service strength of the inner wall of the arch-breaking chute section 3.2 and prevent the coal pushing frame 4.10 from wearing the arch-breaking chute section 3.2 during long-term operation. A limit baffle plate 8 arranged in the inner cavity of the concave structure is also fixed on the wear-resistant lining plate 7. The limit baffle plate 8 can limit the transmission cross frame 4.11 to prevent the entire coal pushing frame 4.10 from being greatly displaced downward or upward under the action of coal slime.

[0030] The utility model provides a self-arch breaking and anti-blocking unloading device for coal slime. Specifically, during use, the coal slime dehydrated by the filter press 1 is directly discharged into the discharge bin 3 for storage, overcoming the drawback that coal slime can only be stored on the ground or directly blended in coal plants. During discharge, the hydraulic cylinder 5.1 of the stroke device 5 is started, and the coal pusher 4.10 of the arch breaking device 4 is driven by the hydraulic cylinder 5.1 to reciprocate along the length direction of the arch breaking chute 3.2. During the reciprocating motion, the arch breaking scraper 4.12 performs an arch breaking operation on the coal slime to prevent the coal slime from being blocked during the unloading process, and continuously transports the coal slime in the discharge bin to the scraper, which can achieve the purpose of continuous unloading, effectively reduce the occurrence of bin blockage, transportation "frozen car" and other phenomena, and can also ensure that the coal slime is blended more evenly in the subsequent coal slime blending process.

[0031] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A coal slime self-arch breaking and anti-blocking unloading device, comprising a filter press and a scraper, characterized in that: A discharge bin is provided between the filter press and the scraper, and the discharge bin includes an upper chute section, an arch-breaking chute section and a lower chute section which are integrally structured with each other; the upper chute section is installed at the discharge port of the filter press and is perpendicular to the bridge deck of the filter press, the arch-breaking chute section is inclined inward and forms an angle of 10°-25° with the vertical direction, and the lower chute section extends downward to the top of the scraper, and the width of the lower chute section is the same as the width of the scraper groove; The arch-breaking chute section is provided with an arch-breaking device, the arch-breaking device comprises a plurality of coal-pushing rack groups which are arranged on the inner wall of the arch-breaking chute section and spaced apart along the length direction of the arch-breaking chute section, the coal-pushing rack groups comprise a plurality of coal-pushing racks which are arranged along the width direction of the arch-breaking chute section, the coal-pushing rack comprises a transmission cross frame and an arch-breaking scraper, the transmission cross frame is arranged along the length direction of the arch-breaking chute section, the arch-breaking scraper comprises a plurality of arch-breaking scrapers spaced apart on the transmission cross frame; a stroke device for controlling the coal-pushing rack to move back and forth along the length direction of the arch-breaking chute section is connected to the transmission cross frame, the maximum stroke of the stroke device being less than or equal to the spacing between two adjacent coal-pushing rack groups.

2. A coal slime self-arch breaking and anti-blocking unloading device according to claim 1, characterized in that: The stroke device includes a hydraulic cylinder and a push rod connected to the telescopic end of the hydraulic cylinder, a connecting plate is welded on the push rod, a pull rod is fixed to the connecting plate by bolts, a stroke groove is provided on the outer wall of the arch-breaking slide section, the pull rod passes through the stroke groove and is fixedly connected to the transmission cross frame, and the length of the stroke groove is greater than or equal to the maximum telescopic stroke of the hydraulic cylinder.

3. The coal slime self-arch breaking and anti-blocking unloading device according to claim 2 is characterized in that: The push rod is a square steel structure, and the outer wall of the arch-breaking slide section is fixed with a first guide wheel and a second guide wheel through a base. The first guide wheel is in rolling cooperation with the side wall of the push rod, and the second guide wheel is in rolling cooperation with the bottom surface of the push rod.

4. The coal slime self-arch breaking and anti-blocking unloading device according to claim 2 is characterized in that: The transmission cross frame is in a concave shape, the pull rod passes through the travel groove and is fixedly connected to the bottom wall of the inner cavity of the concave structure, the arch-breaking scraper is an angle steel, and the arch-breaking scraper performs mud scraping operations through the edges of the angle steel.

5. The coal slime self-arch breaking and anti-blocking unloading device according to claim 4 is characterized in that: A wear-resistant lining is arranged on the inner wall of the arch-breaking chute section, and a limit baffle disposed in the inner cavity of the concave-shaped structure is fixed on the wear-resistant lining.

6. The coal slime self-arch breaking and anti-blocking unloading device according to claim 1 is characterized in that: Support frames are welded on the outer walls of both sides of the arch-breaking chute section, and the discharge silo is fixedly installed on the ground through the support frames.

7. The coal slime self-arch breaking and anti-blocking unloading device according to claim 1 is characterized in that: Reinforced connecting ribs are welded between the inner walls on both sides of the arch-breaking chute section.

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