Underground coal dewatering hoisting device and washing and dewatering hoisting system

Abstract

The underground coal dehydration lifting device and the washing dehydration lifting system belong to the technical field of coal machinery, wherein the underground coal dehydration lifting device comprises a supporting assembly and a dehydration lifting assembly; the supporting assembly comprises a conveying part and a supporting frame; the dehydration lifting assembly comprises a head part, a dehydration lifting part and a tail part; a feeding port is formed above one end of the conveying part; a discharging port is formed below the other end of the conveying part; the dehydration lifting part is located in the conveying part; the supporting frame supports one end of the conveying part close to the lifting belt conveyor, so that the conveying part is arranged in an inclined manner; the head part and the tail part jointly drive and support the dehydration lifting part to rotate in the conveying part; on one hand, the coal in the feeding port is lifted to the discharging port through the dehydration lifting part; on the other hand, the dehydration lifting part dehydrates the coal in time during the lifting process of the coal by the dehydration lifting part, so that the water in the coal flows out of the tail part naturally through the height difference formed between the feeding port and the discharging port.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal machinery, in particular to an underground coal dehydration lifting device and a coal washing dehydration lifting system. BACKGROUND

[0002] At present, most coal mining enterprises screen out gangue and coal through underground raw coal washing equipment, wherein the gangue is directly used for gangue filling working face in the underground, and the coal needs to be lifted to the ground by a lifting device as a main working unit. Therefore, the lifting device not only needs to bear the lifting and conveying function of the coal, but also needs to bear the timely dehydration function after the raw coal washing. If the dehydration cannot be timely, the coal quality of the final product coal will be affected.

[0003] The existing lifting mechanism for coal conveying, with the authorized announcement number of CN220618284U, comprises a positioning frame and a lifting frame, the lifting frame is installed in the inside of the positioning frame, the mounting frame is freely lifted, the height of the lifting bucket in the underground can be flexibly changed, the height of the lifting bucket is adapted to the height of the coal loading in the underground, the coal can be conveniently loaded into the inside of the lifting bucket, the lifting bucket is lifted and moved left and right, and the lifting work of the coal can be performed. However, when the above technical solution is applied to the underground coal washing lifting, the lifting of the coal loaded into the inside of the lifting bucket can only meet the lifting function of the coal, and the technical problem that the coal screened out by the underground raw coal washing equipment needs to be timely dehydrated due to the high water content cannot be solved. SUMMARY

[0004] Therefore, it is necessary to provide an underground coal dehydration lifting device to solve the technical problem that the coal screened out by the underground raw coal washing equipment needs to be timely dehydrated due to the high water content.

[0005] It is also necessary to provide an underground coal washing dehydration lifting system.

[0006] On the one hand, the present invention provides an underground coal dewatering and lifting device, which is arranged between underground raw coal washing equipment and a lifting belt conveyor, the underground coal dewatering and lifting device includes a support assembly and a dewatering and lifting assembly, the support assembly includes a conveying part and a support frame, the dewatering and lifting assembly includes a head part, a dewatering and lifting part, and a tail part, a feed port is provided above one end of the conveying part, and a discharge port is provided below the other end of the conveying part, the feed port of the conveying part is located below the underground raw coal washing equipment, the discharge port of the conveying part is located above the lifting belt conveyor, the support frame is located below the conveying part, the support frame is located on one side of the lifting belt conveyor, the head part is located at one end of the conveying part close to the discharge port, the tail part is located at one end of the conveying part close to the feed port, and the dewatering and lifting part is located at In the conveying section, the support frame is connected to the conveying section, the feeding port of the conveying section is connected to the coal outlet of the underground raw coal washing equipment, the dewatering lifting section is connected to the conveying section, and the dewatering lifting section is connected to both the head section and the tail section. The coal washed by the underground raw coal washing equipment falls into the conveying section through the feeding port. The support frame supports one end of the conveying section close to the lifting belt conveyor so that the conveying section is tilted, and the height of the discharge port is higher than the feeding port. The head section and the tail section jointly drive and support the dewatering lifting section to rotate in the conveying section so that the coal at the feeding port is lifted to the discharge port through the dewatering lifting section. In the process of the dewatering lifting section lifting the coal, the dewatering lifting section dehydrates the coal in time, and at the same time, water flows out naturally from the tail section.

[0007] On the other hand, the present invention provides an underground coal washing, dehydration and lifting system, comprising the above-mentioned underground coal dehydration and lifting device, underground raw coal washing equipment, and a lifting belt conveyor, wherein one end of the underground coal dehydration and lifting device is provided with a feed port, and the other end of the underground coal dehydration and lifting device is provided with a discharge port, and the underground coal dehydration and lifting device is arranged between the underground raw coal washing equipment and the lifting belt conveyor, the feed port is located below the underground raw coal washing equipment, the discharge port is located above the lifting belt conveyor, and the feed port is located above the underground raw coal washing equipment. The underground raw coal washing and screening equipment is connected to the coal outlet of the underground raw coal washing and screening equipment, and the underground raw coal washing and screening equipment is used to wash and screen the raw coal to separate the coal with higher water content and gangue, and the coal with higher water content falls into the underground coal dehydration and lifting device through the feeding port, and the underground coal dehydration and lifting device lifts the coal to the discharge port. In the process of the underground coal dehydration and lifting device lifting the coal with higher water content, the underground coal dehydration and lifting device dehydrates the coal in time, and the dehydrated coal falls into the lifting belt conveyor through the discharge port, and the lifting belt conveyor lifts the coal to the ground.

[0008] In the above-mentioned underground coal dewatering and lifting device and underground coal washing and dewatering and lifting system, the underground coal dewatering and lifting device includes a supporting assembly and a dewatering and lifting assembly. The supporting assembly includes a conveying part and a supporting frame. The dewatering and lifting assembly includes a head part, a dewatering and lifting part, and a tail part. A feed port is provided above one end of the conveying part, and a discharge port is provided below the other end of the conveying part. The feed port of the conveying part is located below the underground raw coal washing equipment, and the discharge port of the conveying part is located above the lifting belt conveyor. The supporting frame is located below the conveying part. The supporting frame is located on one side of the lifting belt conveyor. The head part is located at one end of the conveying part close to the discharge port, and the tail part is located at one end of the conveying part close to the feed port. The dewatering and lifting part is located in the conveying part, and the supporting frame is connected to the conveying part. The feed port of the conveying part is connected to the underground raw coal washing equipment. The coal outlet of the coal washing equipment is connected, the dehydration and lifting part is connected to the conveying part, and the dehydration and lifting part is connected to the head and tail of the machine. The coal washed by the underground raw coal washing equipment falls into the conveying part through the feed port. The support frame supports one end of the conveying part close to the lifting belt conveyor so that the conveying part is tilted, and the height of the discharge port is higher than the feed port. The head and tail of the machine jointly drive and support the dehydration and lifting part to rotate in the conveying part. On the one hand, the coal at the feed port is lifted to the discharge port by the dehydration and lifting part for coal transportation. On the other hand, in the process of the dehydration and lifting part lifting and transporting the coal, the dehydration and lifting part dehydrates the coal in time so that the moisture in the coal naturally flows out from the tail of the machine through the height difference formed between the feed port and the discharge port, thereby ensuring the quality of the final finished coal. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 This is a structural diagram of the underground coal washing, dehydration and lifting system.

[0011] Figure 2 This is a structural diagram of the underground coal dehydration and lifting device.

[0012] Figure 3 It is a partial structural diagram of the conveying part.

[0013] Figure 4 It is a partial structural diagram of the dehydration and lifting part.

[0014] In the figure: underground coal dewatering and lifting device 10, support assembly 110, conveying part 111, feeding port 1111, discharge port 1112, connecting trough 1113, transition trough 1114, receiving trough 1115, conveying space 1116, support frame 112, dewatering and lifting assembly 120, machine head 121, dewatering and lifting part 122, coal scraper 1221, water filter hole 12211, dewatering hole 12212, wear-resistant lining strip 12213, limiting part 12214, limiting platform 122141, limiting rib 122142, chain 1222, guide wheel 1223, machine tail 123, underground raw coal washing equipment 20, lifting belt conveyor 30. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "lower" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0017] Please see Figure 1-4On the one hand, the present invention provides an underground coal dehydration and lifting device 10, which is arranged between the underground raw coal washing equipment 20 and the lifting belt conveyor 30. The underground coal dehydration and lifting device 10 includes a support assembly 110 and a dehydration and lifting assembly 120. The support assembly 110 includes a conveying part 111 and a support frame 112. The dehydration and lifting assembly 120 includes a head 121, a dehydration and lifting part 122, and a tail 123. A feed port 1111 is provided above one end of the conveying part 111, and a discharge port 1112 is provided below the other end of the conveying part 111. The feed port 1111 of 111 is located below the underground raw coal washing equipment 20, the discharge port 1112 of the conveying part 111 is located above the lifting belt conveyor 30, the support frame 112 is located below the conveying part 111, the support frame 112 is located on one side of the lifting belt conveyor 30, the head portion 121 is located on the end of the conveying part 111 close to the discharge port 1112, the tail portion 123 is located on the end of the conveying part 111 close to the feed port 1111, the dehydration lifting part 122 is located in the conveying part 111, the support frame 112 is connected to the conveying part 111, and the conveying part 11 The feed port of 1 is connected to the coal outlet of the underground raw coal washing equipment 20 through a flange, the dehydration lifting part 122 is connected to the conveying part 111, the dehydration lifting part 122 is connected to the head part 121 and the tail part 123, the head part 121 and the tail part 123 are connected to the conveying part 111, and the coal washed by the underground raw coal washing equipment 20 falls into the conveying part 111 through the feed port 1111. The support frame 112 supports one end of the conveying part 111 close to the lifting belt conveyor 30, so that the conveying part 111 is tilted, and the height of the discharge port 1112 is higher than the feed port. The inlet 1111, the head part 121 and the tail part 123 jointly drive and support the dehydration lifting part 122 to rotate in the conveying part 111. On the one hand, the coal at the inlet 1111 is lifted to the discharge port 1112 by the dehydration lifting part 122 for coal transportation. On the other hand, in the process of the dehydration lifting part 122 lifting and transporting the coal, the dehydration lifting part 122 dehydrates the coal in time, so that the moisture in the coal naturally flows out from the tail part 123 through the height difference formed between the inlet 1111 and the discharge port 1112, thereby ensuring the coal quality of the final finished coal.

[0018] In one embodiment, the dewatering lifting part 122 includes a coal scraper 1221 and two chains 1222. There are several coal scrapers 1221. The middle part of the coal scraper 1221 is evenly provided with several penetrating water filter holes 1221 along the conveying direction of the coal scraper 1221. The two chains 1222 are respectively fixedly connected to the two sides of the coal scraper 1221. The two chains 1222 are surrounded between the head 121 and the tail 123. The head 121 and the tail 123 jointly drive and support the two chains 1222 to rotate, so that the two chains 1222 jointly drive the coal scraper 1221 rotates circumferentially, and when the scraper plate 1221 rotates to the bottom of the conveying part 111, the bottom of the scraper plate 1221 contacts the bottom inner wall of the conveying part 111, thereby improving the conveying efficiency of the scraper plate 1221 on the coal. In addition, in the process of the scraper plate 1221 lifting the coal with a higher water content, due to the height difference between the feed port 1111 and the discharge port 1112, the water flow can naturally flow out from the tail part 123 of the machine through the water filter hole 12211, thereby ensuring that the coal with a higher water content washed out by the underground raw coal washing equipment 20 can be dehydrated in time.

[0019] In the present application, the head portion 121 and the tail portion 123 are both prior art, such as a multi-point driven medium double-chain scraper conveyor disclosed in the Chinese utility model patent with authorization announcement number “CN219822649U”.

[0020] In one embodiment, on the one hand, in order to realize that when the two chains 1222 drive the scraper 1221 to rotate to the bottom of the conveying part 111, the scraper 1221 can scrape the coal to transport the coal, on the other hand, in order to realize that when the two chains 1222 drive the scraper 1221 to rotate to the top of the conveying part 111, the two chains 1222 form a return chain, the vertical cross-section of the conveying part 111 is "mouth" shaped, and the dewatering lifting part 122 also includes a guide wheel 1223, and there are several guide wheels 1223, and the several guide wheels 1223 are evenly arranged on the inner side of the conveying part 111, and the guide wheels 1223 are rotatably connected to the conveying part 111, and the two chains 1222 jointly drive the scraper 1221 to be located on the guide wheel 1223, so that the guide wheel 1223 supports the two chains 1222 to form a return chain.

[0021] In one embodiment, on the one hand, in order to prevent the water flow in the underground raw coal washing equipment 20 from eroding the coal scraper 1221 and causing damage during the process of falling into the feed port 1111 along with the coal, on the other hand, in order to reduce the weight of the coal scraper 1221 and extend the service life of the guide wheel 1223, a penetrating dewatering hole 12212 is vertically opened in the middle of the coal scraper 1221, and the dewatering hole 12212 and the water filter hole 12211 are perpendicular to each other. As a result, the water flows out through the dewatering hole 12212, reducing the contact area between the water flow and the coal scraper 1221.

[0022] In one embodiment, in order to reduce the wear between the scraper 1221 and the conveying part 111 and improve the dehydration efficiency, a wear-resistant lining strip 12213 is further provided on the side of the scraper 1221 in contact with the bottom inner wall of the conveying part 111. The wear-resistant lining strip 12213 can be divided into a first wear-resistant lining strip and a second wear-resistant lining strip. There are two first wear-resistant lining strips and four second wear-resistant lining strips, of which two second wear-resistant lining strips form a group. The two first wear-resistant lining strips are respectively located at both ends of the dehydration hole 12212, and the two groups of second wear-resistant lining strips are respectively located on both sides of the dehydration hole 12212. The first wear-resistant lining strip and the second wear-resistant lining strip are respectively located on both sides of the dehydration hole 12212. The wear-resistant lining strips are distributed at intervals, so that a water filtering gap is formed between the scraper plate 1221 body and the bottom of the conveying part 111. On the one hand, it ensures that the water at the bottom of the conveying part 111 can flow smoothly through the water filtering gap, avoiding water accumulation at the bottom of the conveying part 111. On the other hand, the bottom coal slime on the inner wall of the conveying part 111 can flow out from the water filtering gap through the flushing of water flow, ensuring that the underground coal dehydration and lifting device 10 can operate for a long time and preventing the accumulation of coal slime at the bottom of the inner wall of the conveying part 111. The first wear-resistant lining strip and the second wear-resistant lining strip are both integrally formed with the scraper plate 1221.

[0023] In one embodiment, the vertical cross-section of the coal scraper 1221 is "T"-shaped, and a limiting member 12214 is provided on the side of the coal scraper 1221 close to the guide wheel 1223. The limiting member 12214 includes a limiting platform 122141 and two limiting ribs 122142. When the coal scraper 1221 rotates to the top of the conveying part 111, the limiting platform 122141 is located above the guide wheel 1223, and the two limiting ribs 122142 are respectively located at both ends of the guide wheel 1223. The two limiting ribs 122142 are perpendicular to the axis of the guide wheel 1223. The limiting platform 122141 and the two limiting ribs 122142 are integrally formed with the coal scraper 1221. The guide wheel 1223 slides on the limiting platform 122141, and the two limiting ribs 122142 cooperate to prevent the guide wheel 1223 from slipping off the limiting platform 122141.

[0024] In one embodiment, in order to ensure the smoothness of coal transportation by the scraper 1221, the installation spacing between the guide wheel 1223 and the bottom of the conveying part 111 is 3-5 times the coal particle size, and the installation spacing between the guide wheel 1223 and the top of the conveying part 111 is at least the height of one scraper 1221, and the installation spacing between adjacent guide wheels 1223 along the length direction of the conveying part 111 is 0.5-1 times the installation spacing between adjacent scrapers 1221.

[0025] In one embodiment, the width of the water filtering hole 12211 is 0.6-0.8 times the size of the coal particles, on the one hand, preventing the coal from passing through the water filtering hole 12211 to fall or cause the water filtering hole 12211 to be blocked, and on the other hand, ensuring good dewatering effect.

[0026] In one embodiment, the conveying part 111 includes a connecting groove 1113, a transition groove 1114, and a collecting groove 1115, the vertical section of the connecting groove 1113, the transition groove 1114, and the collecting groove 1115 are all "mouth" type, and the areas of the vertical sections of the connecting groove 1113, the transition groove 1114, and the collecting groove 1115 are all equal, the upper part of the collecting groove 1115 is provided with a feeding port, the lower part of one end of the connecting groove 1113 is provided with a discharging port, one end of the connecting groove 1113 is located above the lifting belt conveyor 30, the other end of the connecting groove 1113 is connected with one end of the transition groove 1114, the other end of the transition groove 1114 is connected with one end of the collecting groove 1115, the collecting groove 1115 is located below the underground raw coal washing and dressing equipment 20, the support frame 112 is located below the connecting groove 1113, the head part 121 is located on one end of the connecting groove 1113 away from the transition groove 1114, the tail part 123 is located on one end of the collecting groove 1115 away from the transition groove 1114, the connecting groove 1113, the transition groove 1114, and the collecting groove 1115 are sequentially connected to form a conveying space 1116 together, the dehydration lifting part 122 is located in the conveying space 1116, the feeding port of the collecting groove 1115 is connected with the coal outlet of the underground raw coal washing and dressing equipment 20, the dehydration lifting part 122 is connected with the connecting groove 1113, the transition groove 1114, and the collecting groove 1115, the support frame 112 supports one end of the connecting groove 1113 close to the lifting belt conveyor 30, so that the connecting groove 1113 is inclinedly arranged, and the height of the discharging port 1112 is higher than that of the feeding port 1111, the head part 121 and the tail part 123 jointly drive and support the dehydration lifting part 122 to rotate in the conveying space 1116, and the transition groove 1114 is curvedly arranged at an angle, so that the dehydration lifting part 122 smoothly lifts the coal in the collecting groove 1115 to the connecting groove 1113.

[0027] On the other hand, the present invention provides an underground coal washing, dehydration and lifting system, comprising the underground coal dehydration and lifting device 10, the underground raw coal washing equipment 20, and the lifting belt conveyor 30 described in the above aspect, wherein an inlet 1111 is provided at one end of the underground coal dehydration and lifting device 10, and a discharge port 1112 is provided at the other end of the underground coal dehydration and lifting device 10, and the underground coal dehydration and lifting device 10 is arranged between the underground raw coal washing equipment 20 and the lifting belt conveyor 30, the inlet 1111 is located below the underground raw coal washing equipment 20, the discharge port 1112 is located above the lifting belt conveyor 30, and the inlet 1111 is located below the underground raw coal washing equipment 20, and the discharge port 1112 is located above the lifting belt conveyor 30. The coal outlet of the raw coal washing equipment 20 is connected. The underground raw coal washing equipment 20 is used to wash and screen the raw coal to separate the coal and gangue with higher water content. The coal with higher water content falls into the underground coal dehydration and lifting device 10 through the feeding port 1111. The underground coal dehydration and lifting device 10 lifts the coal to the unloading port 1112. In the process of the underground coal dehydration and lifting device 10 lifting the coal with higher water content, the underground coal dehydration and lifting device 10 dehydrates the coal in time. The dehydrated coal falls into the guide hopper of the lifting belt conveyor 30 through the unloading port 1112. The lifting belt conveyor 30 lifts the coal to the ground.

[0028] In the present application, the underground raw coal washing equipment 20 may be a jig, a flotation machine, or a heavy medium separator.

[0029] The above disclosure is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. An underground coal dehydration and lifting device, arranged between the underground raw coal washing equipment and the lifting belt conveyor, characterized by: The underground coal dewatering and lifting device includes a supporting assembly and a dewatering and lifting assembly, the supporting assembly includes a conveying part and a supporting frame, the dewatering and lifting assembly includes a head part, a dewatering and lifting part, and a tail part, a feed port is provided above one end of the conveying part, and a discharge port is provided below the other end of the conveying part, the feed port of the conveying part is located below the underground raw coal washing equipment, the discharge port of the conveying part is located above the lifting belt conveyor, the supporting frame is located below the conveying part, the supporting frame is located on one side of the lifting belt conveyor, the head part is located on one end of the conveying part close to the discharge port, the tail part is located on one end of the conveying part close to the feed port, the dewatering and lifting part is located in the conveying part, the supporting frame is connected to the conveying part, the feed port of the conveying part is connected to the coal outlet of the underground raw coal washing equipment, the dewatering and lifting part is connected to the conveying part, the dewatering and lifting part is connected to the head part and the tail part The dewatering lifting part is a kind of equipment that is designed to lift and convey coal to the conveyor belt, and the dewatering lifting part is a kind of equipment that is designed to lift and convey coal to the conveyor belt.

2. The underground coal dehydration and lifting device according to claim 1, characterized in that: The two chains are fixedly connected to both sides of the scraper plate respectively, and the two chains are wrapped around the head part and the tail part of the machine. The head part and the tail part jointly drive and support the two chains to rotate. When the scraper plate rotates to the bottom of the conveying part, the bottom of the scraper plate contacts the bottom inner wall of the conveying part.

3. The underground coal dehydration and lifting device according to claim 2, characterized in that: The vertical cross-section of the conveying part is in the shape of a "mouth", and the dewatering and lifting part also includes a guide wheel. There are several guide wheels, and the guide wheels are evenly arranged on the inner side of the conveying part. The guide wheels are rotatably connected to the conveying part, and the two chains jointly drive the coal scraper to be located on the guide wheels, so that the guide wheels support the two chains to form a return chain.

4. The underground coal dehydration and lifting device according to claim 2 or 3, characterized in that: The side of the coal scraper that contacts the bottom inner wall of the conveying portion is further provided with a wear-resistant lining strip. The wear-resistant lining strips are in at least two groups and are distributed at intervals. The wear-resistant lining strips are integrally formed with the coal scraper.

5. The underground coal dehydration and lifting device according to claim 3, characterized in that: The vertical cross-section of the coal scraper is "T"-shaped. A limiting member is provided on the side of the coal scraper close to the guide wheel. The limiting member includes a limiting platform and two limiting edges. When the coal scraper rotates to the top of the conveying part, the limiting platform is located above the guide wheel, and the two limiting edges are respectively located at both ends of the guide wheel. The two limiting edges are perpendicular to the axis of the guide wheel. The limiting platform and the two limiting edges are integrally formed with the coal scraper. The guide wheel slides on the limiting platform, and the two limiting edges cooperate to prevent the guide wheel from slipping off the limiting platform.

6. The underground coal dehydration and lifting device according to claim 3, characterized in that: The installation spacing between the guide wheel and the bottom of the conveying part is 3-5 times the coal particle size, and the installation spacing between the guide wheel and the top of the conveying part is at least the height of one coal scraper, and the installation spacing between adjacent guide wheels along the length direction of the conveying part is 0.5-1 times the installation spacing between adjacent coal scrapers.

7. The underground coal dehydration and lifting device according to claim 3, characterized in that: The width of the water filter hole is 0.6-0.8 times the coal particle size.

8. The underground coal dehydration and lifting device according to claim 1, characterized in that: The conveying part includes a connecting groove, a transition groove, and a receiving groove. The vertical sections of the connecting groove, the transition groove, and the receiving groove are all "mouth" shaped, and the areas of the vertical sections of the connecting groove, the transition groove, and the receiving groove are all equal. A feeding port is opened above the receiving groove, and a discharging port is opened below one end of the connecting groove. One end of the connecting groove is located above the lifting belt conveyor, and the other end of the connecting groove is connected to one end of the transition groove, and the other end of the transition groove is connected to one end of the receiving groove. The receiving groove is located below the underground raw coal washing equipment, and the support frame is located below the connecting groove. The head of the machine is located on one end of the connecting groove away from the transition groove, and the tail of the machine is located on the receiving groove away from At one end of the transition trough, the connecting trough, the transition trough, and the receiving trough are connected in sequence to form a conveying space. The dewatering lifting part is located in the conveying space. The feeding port of the receiving trough is connected to the coal outlet of the underground raw coal washing equipment. The dewatering lifting part is connected to the connecting trough, the transition trough, and the receiving trough. The support frame supports one end of the connecting trough close to the lifting belt conveyor so that the connecting trough is tilted, and the height of the discharge port is higher than the feeding port. The head and the tail of the machine jointly drive and support the dewatering lifting part to rotate in the conveying space. The transition trough is bent at a lifting angle so that the dewatering lifting part can smoothly lift the coal in the receiving trough to the connecting trough.

9. An underground coal washing, dehydration and lifting system, characterized by: The invention comprises an underground coal dehydration and lifting device, an underground raw coal washing equipment, and an elevating belt conveyor as described in any one of claims 1 to 8 above, wherein a feed port is provided at one end of the underground coal dehydration and lifting device, and a discharge port is provided at the other end of the underground coal dehydration and lifting device, and the underground coal dehydration and lifting device is arranged between the underground raw coal washing equipment and the elevating belt conveyor, the feed port is located below the underground raw coal washing equipment, the discharge port is located above the elevating belt conveyor, and the feed port is connected to the coal discharge port of the underground raw coal washing equipment. The underground raw coal washing equipment is connected to the feeding port, and is used to separate the coal with higher water content and gangue from the raw coal through washing and screening. The coal with higher water content falls into the underground coal dehydration and lifting device through the feeding port, and the underground coal dehydration and lifting device lifts the coal to the discharge port. In the process of the underground coal dehydration and lifting device lifting the coal with higher water content, the underground coal dehydration and lifting device dehydrates the coal in time, and the dehydrated coal falls into the lifting belt conveyor through the discharge port, and the lifting belt conveyor lifts the coal to the ground.

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