A coal blocking device for a coal conveying system and a coal conveying device

Abstract

The utility model relates to a coal conveying system technical field especially relates to a kind of coal blocking device and coal conveying device for coal conveying system, the coal blocking device includes: box, box is fixed on the upper portion of conveyer support, and located the starting end of conveyer, the face of box towards conveyer is provided with conveying cavity, conveying cavity is parallelly arranged with conveyer, conveying cavity is opened in the both ends of box;Coal blocking plate is set to the end of box, and covers the end of conveying cavity, the bottom of coal blocking plate is contacted with conveyer;Wherein, coal blocking plate includes straight plate part and the bending part connected with straight plate part, straight plate part is fixed on the end face of box, bending part is stretched into conveying cavity and is closely combined with the upper surface of conveyer.The utility model is set through the setting of bending structure, not only improve the contact area of coal blocking plate and conveyer, improve the effect of coal blocking while also improve the wear resistance of coal blocking plate, and then reduce the leakage of coal powder.

Description

Technical Field

[0001] This utility model relates to the field of coal conveying system technology, and in particular to a coal stopper and coal conveying device for a coal conveying system. Background Technology

[0002] In coal conveying systems, coal deflectors are mainly used to control the flow of coal by physically obstructing it, preventing excessive coal from overflowing from the sides or bottom of the conveyor belt, and especially preventing coal dust leakage, because the friction between the conveyor belt and the rollers and supports may cause the temperature to rise, which can easily lead to a fire.

[0003] In the existing technology, the coal falling from the pipe of the coal crusher is transported to a high place by a belt. During operation, the coal dust is blocked by the friction between the rigid baffle set at the front end of the rectangular coal stopper and the belt, thus preventing the coal dust from leaking from the tail end of the belt.

[0004] However, during long-term operation, the friction between the rigid baffle and the belt surface causes wear on the baffle. This wear creates a large gap between the rigid baffle and the belt, leading to the leakage of a large amount of coal dust at the tail end of the belt. The leaked coal dust not only poses a significant fire hazard but also causes secondary pollution to the site environment. Therefore, improving the coal dust blocking effect of the coal baffle and reducing coal dust leakage has become an urgent problem to be solved. Utility Model Content

[0005] In view of at least one of the above technical problems, the present invention provides a coal retainer and coal conveying device for a coal conveying system, which adopts an improved coal retainer plate structure to reduce coal dust leakage.

[0006] According to a first aspect of the present invention, a coal stopper and a coal conveying device for a coal conveying system are provided, comprising:

[0007] The box is fixed to the upper part of the conveyor belt support and located at the starting end of the conveyor belt. A conveying cavity is provided on the surface of the box facing the conveyor belt. The conveying cavity is arranged parallel to the conveyor belt and is open at both ends of the box.

[0008] A coal retaining plate is disposed at the end of the box body and covers the end of the conveying cavity, and the bottom of the coal retaining plate is in contact with the conveyor belt;

[0009] The coal retaining plate includes a straight plate portion and a bent portion connected to the straight plate portion. The straight plate portion is fixed to the end face of the box body, and the bent portion extends into the conveying cavity and fits tightly against the upper surface of the conveyor belt.

[0010] Furthermore, the coal retaining plate is made of flexible material, and the bent portion maintains elastic contact with the conveyor belt.

[0011] Furthermore, the coal retaining plate is made of rubber.

[0012] Furthermore, the cross-section of the bent portion is arc-shaped, and the bottom surface of the bent portion is tangent to the conveyor belt.

[0013] Furthermore, the straight plate is provided with connecting holes on its periphery, and the coal retaining plate is detachably connected to the end face of the box body by fasteners.

[0014] Furthermore, the end of the bent portion away from the straight plate portion is tilted upwards relative to the conveyor belt to form a receiving trough for coal powder to enter.

[0015] Furthermore, a sprayer is fixed on the inner wall of the coal retaining plate. The sprayer has a temperature probe facing the bending part and a nozzle facing the inner wall of the straight plate part. When the temperature probe detects that the temperature is greater than a set value, the nozzle sprays cooling water towards the inner wall of the straight plate part.

[0016] Furthermore, the bent portion is provided with a water outlet on its raised side. The water outlet is located on the side of the bent portion away from the straight plate portion, and multiple water outlets are evenly distributed along the straight line direction of the width of the bent portion.

[0017] Furthermore, the inner side of the coal retaining plate also has a vertically arranged guide groove, which is connected to the water outlet.

[0018] According to a second aspect of the present invention, a coal conveying device is also provided, comprising a coal stopper for a coal conveying system as described in any one of the first aspects.

[0019] The beneficial effects of this utility model are as follows: By improving the coal retaining plate to a straight plate portion covering the end of the conveying cavity and a bent portion extending into the conveying cavity, and by setting the structure in which the bent portion is closely fitted to the upper surface of the conveyor belt, compared with the prior art, the bent structure not only increases the contact area between the coal retaining plate and the conveyor belt and improves the coal retaining effect, but also improves the wear resistance of the coal retaining plate, thereby reducing the leakage of coal powder. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the coal stopper used in the coal conveying system in an embodiment of this utility model;

[0022] Figure 2 This is a side cross-sectional view of the coal stopper used in the coal conveying system in an embodiment of the present invention;

[0023] Figure 3 As an embodiment of this utility model Figure 2 A magnified schematic diagram of the structure at point A in the diagram;

[0024] Figure 4 This is a schematic diagram of the structure of the coal retaining plate in an embodiment of this utility model;

[0025] Figure 5 This is a cross-sectional view of the coal retaining plate at the water outlet in an embodiment of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the coal baffle plate in the embodiment of this utility model when blocking coal powder.

[0027] Explanation of reference numerals in the attached drawings: 1. Box body; 11. Conveying chamber; 2. Coal retaining plate; 21. Straight plate section; 211. Connecting hole; 212. Guide channel; 22. Bending section; 221. Receiving tank; 222. Water outlet; 3. Sprayer; 31. Temperature probe; 32. Spray head. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] like Figures 1 to 6 The coal retainer shown is for a coal conveying system and includes a housing 1 and a coal retaining plate 2 disposed at the end of the housing 1, as detailed below. Figure 1and Figure 2 As shown in the embodiment of this utility model, the housing 1 is fixed to the upper part of the conveyor belt support and located at the starting end of the conveyor belt. A conveying cavity 11 is provided on the surface of the housing 1 facing the conveyor belt. The conveying cavity 11 is arranged parallel to the conveyor belt and is open at both ends of the housing 1. In this embodiment of this utility model, the coal falling from the coal drop pipe of the coal crusher is conveyed to the higher section by the belt. Due to the height difference, the coal dust on the belt will slide down the belt under its own gravity. To prevent the coal dust from falling down the belt... Figure 1 and Figure 2 The right end shown in the diagram poses a safety hazard and causes environmental pollution. In the embodiment of the present invention, the box 1 is fixed to the conveyor belt support and forms a conveying chamber 11 parallel to the conveyor belt. When coal is being dropped, the coal dropping pipe can be connected to the box 1 so that the coal in the coal dropping pipe falls into the conveying chamber 11. The setting of the conveying chamber 11 can reduce the splashing of coal dust. Of course, it should also be noted that in the embodiment of the present invention, a dust collection pipe can also be connected to the box 1 to collect and reuse excess coal dust.

[0032] Please continue to refer to Figure 1 and Figure 2 In this embodiment of the invention, the coal baffle 2 is disposed at the end of the housing 1 and covers the end of the conveying cavity 11, with the bottom of the coal baffle 2 in contact with the conveyor belt; through contact with the conveyor belt, the coal powder falling along the conveyor belt is blocked; please refer to the following for details. Figure 2 In an embodiment of this utility model, the coal retaining plate 2 includes a straight plate portion 21 and a bent portion 22 connected to the straight plate portion 21. The straight plate portion 21 is fixed to the end face of the housing 1, and the bent portion 22 extends into the conveying cavity 11 and is tightly fitted to the upper surface of the conveyor belt. Figure 3 As shown, the bending part 22 is closely attached to the surface of the conveyor belt, so that the bending part 22 has a larger contact area with the conveyor belt. Compared with the traditional straight plate structure, the blocking effect is better. In addition, due to the increase in contact area, the wear resistance of the coal retaining plate 2 is improved.

[0033] In the above embodiments, by improving the coal retaining plate 2 to a straight plate portion 21 covering the end of the conveying cavity 11 and a bent portion 22 extending into the conveying cavity 11, and by setting the structure in which the bent portion 22 is tightly fitted to the upper surface of the conveyor belt, compared with the prior art, the bent structure not only increases the contact area between the coal retaining plate 2 and the conveyor belt and improves the coal retaining effect, but also improves the wear resistance of the coal retaining plate 2, thereby reducing the leakage of coal powder.

[0034] Based on the above embodiments, in some embodiments of this utility model, the coal retaining plate 2 is made of flexible material, and the bent portion 22 maintains elastic contact with the conveyor belt. By using a flexible material, the bent portion 22 achieves flexible contact with the conveyor belt, and the bent portion 22 and the surface of the conveyor belt achieve a tighter fit, thereby improving the coal retaining effect. It should be noted that in some embodiments of this utility model, the flexible material is made of high-strength, wear-resistant material, such as rubber.

[0035] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the cross-section of the bent portion 22 is arc-shaped, and the bottom surface of the bent portion 22 is tangential to the conveyor belt. Figure 3 As shown, through the structure of the arc-shaped surface, a pushing force is achieved on the bending part 22 as the conveyor belt moves towards the left end. This pushing force can be offset by the falling gravity of the coal powder, thereby reducing the stress on the bending part 22 and further improving the service life of the coal retaining plate 2.

[0036] Please continue to refer to Figure 4 In this embodiment of the invention, a connecting hole 211 is also provided on the periphery of the straight plate portion 21, and the coal retaining plate 2 is detachably connected to the end face of the housing 1 by fasteners. Specifically, a threaded hole can be provided on the end face of the housing 1, and the coal retaining plate 2 can be fixed to the end face of the housing 1 by passing screws through the connecting hole 211. With this structure, when the coal retaining plate 2 needs to be replaced, it can be replaced by removing the screws.

[0037] Please refer to some embodiments of this utility model. Figure 4 and Figure 5 The end of the bent section 22 away from the straight section 21 is tilted upwards relative to the conveyor belt, forming a receiving trough 221 for coal powder to enter. This structural design allows coal powder to accumulate in the receiving trough 221 when it reaches a certain level at the front end of the bent section 22. The coal powder entering the receiving trough 221 increases the weight borne by the bent section 22, thereby increasing the pressure exerted by the bent section 22 on the conveyor belt and achieving a better coal-blocking effect.

[0038] In embodiments of this utility model, to avoid temperature rise caused by friction between the coal retaining plate 2 and the conveyor belt, such as... Figure 3As shown, a sprayer 3 is also fixed on the inner wall of the coal retaining plate 2. The sprayer 3 has a temperature probe 31 facing the bent portion 22 and a nozzle 32 facing the inner wall of the straight plate portion 21. When the temperature probe 31 detects that the temperature is higher than a set value, the nozzle 32 sprays cooling water towards the inner wall of the straight plate portion 21. It should be noted that the temperature probe 31 can have various structural forms, such as a thermocouple probe, a resistance probe, an inductive probe, or an infrared probe, etc. By monitoring the temperature, cooling is achieved by spraying water when the temperature is too high, thereby avoiding safety hazards caused by excessive temperature.

[0039] In embodiments of this utility model, in order to further improve the uniformity of cooling, such as Figure 5 and Figure 6 As shown, the bent portion 22 is also provided with a water outlet 222 on its raised side. The water outlet 222 is located on the side of the bent portion 22 away from the straight plate portion 21, and multiple water outlets 222 are evenly distributed along the straight line direction of the width of the bent portion 22. By placing the water outlet 222 on the side of the bent portion 22 away from the straight plate portion 21, as... Figure 5 As shown, the water outlet 222 is located at the front end of the bend 22 on the side tangential to the conveyor belt. This structural design allows the cooling water flowing down from the inner wall of the straight plate 21 to first flow into the receiving tank 221, and then out from both sides and the water outlet 222, thereby improving the cooling effect. Furthermore, please refer to... Figure 5 In this embodiment of the invention, the inner side of the coal retaining plate 2 also has a vertically arranged guide groove 212, which communicates with the water outlet 222. The vertical arrangement here refers to the guide groove 212 being arranged parallel to the inner wall of the straight plate portion 21, with its end communicating with the water outlet 222. This structural design allows more cooling water to flow out through the water outlet 222, thereby evenly spraying the cooling water onto the contact surface between the bent portion 22 and the conveyor belt, achieving a better cooling effect. Figure 6 As shown, the water outlet 222 also facilitates the entry of coal powder at its front end into the receiving tank 221 through the water outlet 222, increasing the gravity of the bending part 22, thereby achieving a better coal blocking effect.

[0040] In an embodiment of this utility model, a coal conveying device is also provided, including the coal barrier for the coal conveying system described above. The coal conveying system is existing technology in the field, and its specific structural steps are described in detail here. However, the structural forms of the box 1 and the coal barrier 2 described above are all within the protection scope of this utility model.

[0041] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coal stopper for a coal conveying system, characterized in that, include: The box is fixed to the upper part of the conveyor belt support and located at the starting end of the conveyor belt. A conveying cavity is provided on the surface of the box facing the conveyor belt. The conveying cavity is arranged parallel to the conveyor belt and is open at both ends of the box. A coal retaining plate is disposed at the end of the box body and covers the end of the conveying cavity, and the bottom of the coal retaining plate is in contact with the conveyor belt; The coal retaining plate includes a straight plate portion and a bent portion connected to the straight plate portion. The straight plate portion is fixed to the end face of the box body, and the bent portion extends into the conveying cavity and fits tightly against the upper surface of the conveyor belt.

2. The coal stopper for a coal conveying system according to claim 1, characterized in that, The coal retaining plate is made of flexible material, and the bent part maintains elastic contact with the conveyor belt.

3. The coal stopper for a coal conveying system according to claim 2, characterized in that, The coal retaining plate is made of rubber.

4. The coal stopper for a coal conveying system according to claim 1, characterized in that, The cross-section of the bent portion is arc-shaped, and the bottom surface of the bent portion is tangent to the conveyor belt.

5. The coal stopper for a coal conveying system according to claim 1, characterized in that, The straight plate section is also provided with connecting holes on its periphery, and the coal retaining plate is detachably connected to the end face of the box body by fasteners.

6. The coal stopper for a coal conveying system according to claim 4, characterized in that, The bent portion is positioned so that the end away from the straight plate portion is raised relative to the conveyor belt, forming a receiving trough for coal powder to enter.

7. The coal stopper for a coal conveying system according to claim 6, characterized in that, A sprayer is also fixed on the inner wall of the coal retaining plate. The sprayer has a temperature probe facing the bending part and a nozzle facing the inner wall of the straight plate part. When the temperature probe detects that the temperature is greater than the set value, the nozzle sprays cooling water towards the inner wall of the straight plate part.

8. The coal stopper for a coal conveying system according to claim 7, characterized in that, The bent portion is also provided with a water outlet on its raised side. The water outlet is located on the side of the bent portion away from the straight plate portion. Multiple water outlets are evenly distributed along the straight line direction of the width of the bent portion.

9. The coal stopper for a coal conveying system according to claim 8, characterized in that, The inner side of the coal retaining plate also has a vertically arranged guide groove, which is connected to the water outlet.

10. A coal conveying device, characterized in that, Includes a coal stopper for a coal conveying system as described in any one of claims 1 to 9.

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