Scraper conveyer

Abstract

The utility model discloses a scraper conveyor, which comprises a feed hopper, a middle trough, a chain, a scraper, a traction system and a discharge pipe, and further comprises a material accumulation trough, the material accumulation trough is arranged at the bottom of a bottom plate between the feed hopper and the discharge pipe, the top end of the material accumulation trough is communicated with the top of the bottom plate, and the feed hopper is positioned at the top of one end of the material accumulation trough; a sieve plate is arranged on the bottom plate between the other end of the material accumulation groove and the discharge pipe; and a material collection hopper is arranged below the sieve plate. The device has the advantages that the problem of abrasion caused by direct sliding contact between raw coal and the bottom of the middle trough can be solved by arranging the material accumulating trough, the service life of the bottom plate can be effectively prolonged, the equipment failure rate is reduced, the manual labor intensity is reduced, and the screening efficiency is improved; and the raw coal can be pre-screened through the screening plate when entering the discharging pipe, so that the screening load of subsequent equipment can be reduced, and the screening efficiency is further improved. Moreover, bulges are arranged in the feed hopper and the discharge pipe, so that the raw coal can be buffered, and the failure rate of equipment is further reduced.

Description

Technical field:

[0001] The utility model relates to the technical field of raw coal transportation, in particular to a scraper conveyor. Background technology:

[0002] Scraper conveyor is an important means of transporting raw coal in coal preparation plants. It consists of a feed hopper, a middle trough, a chain, a scraper, a traction system and a discharge pipe. The existing scraper conveyor has the following problems during operation: 1. The bottom plate of the middle trough is made of wear-resistant materials such as manganese steel plates, stainless steel plates or cast stones, ceramic sheets, etc., which is intended to enhance the resistance to smashing and wear of the bottom plate of the middle trough, but the effect is not ideal in actual use, especially the feeding hopper drop position, which not only bears the friction caused by the scraper transportation, but also bears the impact caused by the height difference of the incoming material. The service life of the bottom plate is very low, the equipment failure rate is high, and the labor intensity of workers replacing the bottom plate is high. 2. When the scraper conveyor in the coal preparation plant transports raw coal and enters the next stage of screening, the raw coal is mixed together, resulting in low screening efficiency of the lower screening equipment. Utility model content:

[0003] The utility model aims to provide a scraper conveyor.

[0004] The utility model is implemented by the following technical scheme: a scraper conveyor, which includes a feed hopper, a middle trough, a chain, a scraper and a traction system and a discharge pipe, the middle trough includes a bottom plate and side plates respectively fixed on the top of both sides of the bottom plate, and it also includes a material accumulation trough, the material accumulation trough is arranged at the bottom of the bottom plate between the feed hopper and the discharge pipe, the top of the material accumulation trough is connected with the top of the bottom plate, and the feed hopper is located at the top of one end of the material accumulation trough; a sieve hole is arranged on the bottom plate between the other end of the material accumulation trough and the discharge pipe, a sieve plate is arranged in the sieve hole, and a collecting hopper is installed below the sieve plate.

[0005] Furthermore, the screen plate includes a plurality of screen bars, and a plurality of pairs of through holes corresponding to the respective screen bars are arranged on the two side plates, and the two ends of the screen bars are respectively passed through the corresponding through holes and placed on the outside of the side plates; a clamping plate is arranged on the outer side of the side plate, and a clamping groove corresponding to the respective screen bars is arranged at the bottom of the clamping plate, and the clamping plate is clamped on the top of the plurality of screen bars through the clamping groove; and locking buckles are arranged between the two ends of the clamping plate and the side plates.

[0006] Furthermore, a screen is fixed in the middle of the material accumulation trough, the bottom of the material accumulation trough is inclined, and a discharge pipe is connected to the lower end of the bottom of the trough.

[0007] Furthermore, a plurality of protrusions are fixed on the inner wall of the feed hopper and the inner wall of the discharge pipe respectively.

[0008] The advantages of the utility model are as follows: by setting up the accumulation trough, the wear problem caused by the direct sliding contact between the raw coal and the bottom of the middle trough can be solved, which can effectively extend the service life of the bottom plate, reduce the equipment failure rate, reduce the labor intensity, and improve the screening efficiency; and the raw coal can be pre-screened by the sieve plate before entering the discharge pipe, which can reduce the subsequent equipment screening load and further improve the screening efficiency. In addition, protrusions are set in the feed hopper and the discharge pipe to buffer the raw coal and further reduce the equipment failure rate. Description of the drawings:

[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0010] Figure 2 for Figure 1 A partial enlarged view of .

[0011] Feed hopper 1, middle trough 2, chain 3, scraper 4, traction system 5, discharge pipe 6, bottom plate 21, side plate 22, accumulation trough 7, collecting hopper 8, screen bar 9, through hole 10, clamping plate 11, clamping groove 12, lock buckle 13, screen 14, discharge pipe 15, protrusion 16, screen hole 17. Specific implementation method:

[0012] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0013] like Figure 1 and Figure 2As shown, a scraper conveyor includes a feed hopper 1, a middle trough 2, a chain 3, a scraper 4 and a traction system 5, a discharge pipe 6 and a material accumulation trough 7, wherein the chain 3, the scraper 4 and the traction system 5 are all existing structures, and a plurality of protrusions 16 are respectively fixed on the inner wall of the feed hopper 1 and the inner wall of the discharge pipe 6, and the protrusions 16 are made by welding waste coal scraper rods to the inner wall of the feed hopper 1 or the discharge pipe 6. The protrusions 16 made of waste coal scraper rods can withstand the impact of materials and achieve anti-smashing and wear-resistant effects. Among them, the middle trough 2 includes a bottom plate 21 and side plates 22 respectively fixed on the top of both sides of the bottom plate 21; a material accumulation trough 7 is arranged at the bottom of the bottom plate 21 between the feed hopper 1 and the discharge pipe 6; the top of the material accumulation trough 7 is connected with the top of the bottom plate 21, and the feed hopper 1 is located at the top of one end of the material accumulation trough 7; the raw coal delivered by the feed hopper 1 first enters the material accumulation trough 7 and fills it; the raw coal delivered thereafter is transported backwards in the cooperation of the chain 3 and the scraper 4, and rubs against the raw coal stored in the material accumulation trough 7 during the transportation process, thereby preventing the raw coal from directly contacting the bottom plate 21 and causing wear of the middle trough 2, thereby effectively extending the life of the middle trough 2. Furthermore, a screen 14 is fixed in the middle of the accumulation trough 7, the bottom of the accumulation trough 7 is inclined, and a discharge pipe 15 is connected to the lower end of the bottom of the trough. The powder and small particles generated by the extrusion and friction of the coal blocks in the accumulation trough 7 when the scraper conveys the coal blocks can pass through the screen 14 to the bottom of the trough, and then be discharged through the discharge pipe 15 to achieve pre-screening.

[0014] A sieve hole 17 is provided on the bottom plate 21 between the other end of the material accumulation trough 7 and the discharge pipe 6, a sieve plate is provided in the sieve hole 17, and a collecting hopper 8 is installed below the sieve plate. The raw coal is pre-screened by the sieve plate before entering the discharge pipe 6, which can reduce the processing load of the subsequent screening equipment and improve the screening efficiency; the screened raw coal enters the collecting hopper 8. Specifically, the sieve plate includes a plurality of sieve bars 9, and a plurality of pairs of through holes 10 corresponding to each sieve bar 9 are provided on the side plates 22 on both sides of the two sieve holes 17, and the two ends of the sieve bar 9 are respectively passed through the corresponding through holes 10 and placed outside the side plates 22; a clamping plate 11 is provided on the outside of the side plates 22, and a clamping groove 12 corresponding to each sieve bar 9 is provided at the bottom of the clamping plate 11, and the clamping plate 11 is clamped on the top of the plurality of sieve bars 9 through the clamping groove 12; a lock buckle 13 is provided between the two ends of the clamping plate 11 and the side plates 22. When the screen bar 9 is found to be worn, the lock 13 is opened, the clamping plate 11 can be removed from both ends of the screen bar 9, the worn screen bar 9 can be pulled out from the through hole 10, and then a new screen bar 9 is replaced and inserted into the through hole 10, and then the clamping plate 11 is clamped above the screen bar and locked with the lock 13.

[0015] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A scraper conveyor, comprising a feed hopper, a middle trough, a chain, a scraper, a traction system and a discharge pipe, wherein the middle trough comprises a bottom plate and side plates respectively fixed to the tops of both sides of the bottom plate, characterized in that: It also includes a material accumulation trough, which is arranged at the bottom of the bottom plate between the feed hopper and the discharge pipe, the top of the material accumulation trough is connected with the top of the bottom plate, and the feed hopper is located at the top of one end of the material accumulation trough; a sieve hole is arranged on the bottom plate between the other end of the material accumulation trough and the discharge pipe, a sieve plate is arranged in the sieve hole, and a collecting hopper is installed below the sieve plate.

2. A scraper conveyor according to claim 1, characterized in that: The sieve plate includes a plurality of sieve bars, and a plurality of pairs of through holes corresponding to the respective sieve bars are arranged on the two side plates, and the two ends of the sieve bars pass through the corresponding through holes and are placed outside the side plates respectively; a clamping plate is arranged on the outer side of the side plates, and a clamping groove corresponding to the respective sieve bars is arranged at the bottom of the clamping plate, and the clamping plate is clamped on the top of the plurality of sieve bars through the clamping groove; and locking buckles are arranged between the two ends of the clamping plate and the side plates.

3. A scraper conveyor according to claim 1 or 2, characterized in that: A screen is fixed in the middle of the material accumulation trough, the bottom of the material accumulation trough is arranged obliquely, and a discharge pipe is connected to the lower end of the bottom of the trough.

4. A scraper conveyor according to claim 1 or 2, characterized in that: A plurality of protrusions are respectively fixed on the inner wall of the feed hopper and the inner wall of the discharge pipe.

5. A scraper conveyor according to claim 3, characterized in that: A plurality of protrusions are respectively fixed on the inner wall of the feed hopper and the inner wall of the discharge pipe.

Images