Underground coal mine slime water silt remover

Abstract

The utility model relates to the technical field of coal mine underground slime water silt removing equipment, in particular to a coal mine underground slime water silt remover which comprises a groove body, a chain and a guide way. The guide channel is arranged in the groove body and comprises a first inclined section, a first transition section, a first horizontal section, a second transition section and a second inclined section which are arranged in sequence; the included angle alpha 1 between the first inclined section and the first horizontal section is larger than 90 degrees and smaller than 180 degrees, and the included angle alpha 2 between the second inclined section and the first horizontal section is larger than 90 degrees and smaller than 180 degrees. The chain comprises a plurality of chain links, and each chain link comprises a first chain plate, a second chain plate, a pin shaft and a shaft sleeve; the two ends of the first chain plate and the two ends of the second chain plate are connected through the pin shaft; the thickness L1 of the first chain plate is larger than or equal to 6 mm and smaller than or equal to 8 mm, and the thickness L2 of the second chain plate is larger than or equal to 6 mm and smaller than or equal to 8 mm. And by adjusting the chain and the guide channel, the service life of the chain is longer.

Description

Technical Field

[0001] This utility model relates to the technical field of coal slurry and water dredging equipment in coal mines, specifically to a coal slurry and water dredging machine for underground coal mines. Background Technology

[0002] Currently, coal slurry dredging machines in underground coal mines generally include a trough, chain, drive assembly, and scraper. The trough contains guide rails, within which the chain slides. The scraper is mounted on the chain, and the drive assembly drives the chain via a combination of a driving sprocket and a driven sprocket, which in turn moves the scraper within the trough, scraping the coal slurry to the discharge port and out of the trough. However, it has been observed that the chain of these underground coal slurry dredging machines experiences significant wear. Therefore, this invention proposes an underground coal slurry dredging machine that reduces chain wear during use, thereby decreasing the maintenance frequency of the machine. Utility Model Content

[0003] The main purpose of this utility model is to provide a coal mine underground coal slurry dredging machine to reduce the wear of the chain during use and reduce the maintenance frequency of the coal mine underground coal slurry dredging machine.

[0004] To achieve the above objectives, the coal mine underground coal slurry dredging machine provided by this utility model includes: a trough, a chain, and a guide rail;

[0005] The guide channel is disposed in the groove, and the guide channel includes a first inclined section, a first transition section, a first horizontal section, a second transition section, and a second inclined section;

[0006] The first inclined segment, the first transition segment, the first horizontal segment, the second transition segment, and the second inclined segment are arranged sequentially. The angle between the first inclined segment and the first horizontal segment is α1, and the angle between the second inclined segment and the first horizontal segment is α2, wherein 90° < α1 < 180°; 90° < α2 < 180°.

[0007] The chain comprises multiple links connected in sequence and forming a loop. Each link includes: a first chain plate, a second chain plate, a pin, and a bushing.

[0008] The first chain plate and the second chain plate are arranged opposite to each other, and the two ends of the first chain plate and the second chain plate are connected by the pin. The bushing is fitted onto the pin.

[0009] The thickness of the first chain plate is L1, and the thickness of the second chain plate is L2; ​​wherein, 6mm≤L1≤8mm; 6mm≤L2≤8mm.

[0010] Furthermore, both the first transition segment and the second transition segment are arc-shaped, and the arc of the first transition segment and the second transition segment is π / 4.

[0011] Furthermore, the guide channel includes a wear-resistant plate and an angle steel, the wear-resistant plate and the angle steel are detachably connected by countersunk bolts, the angle steel is welded to the inner wall of the groove, and the wear-resistant plate is used to guide the chain.

[0012] Furthermore, the tank includes a third inclined section, a third transition section, a second horizontal section, a fourth transition section, and a fourth inclined section;

[0013] The third inclined segment, the third transition segment, the second horizontal segment, the fourth transition segment, and the fourth inclined segment are arranged sequentially. The first inclined segment is located within the third inclined segment, the first transition segment is located within the third transition segment, the first horizontal segment is located within the second horizontal segment, the second transition segment is located within the fourth transition segment, and the second inclined segment is located within the fourth inclined segment.

[0014] Furthermore, the third tilting section includes a head section and at least one first adjusting section, wherein the first adjusting section is detachably disposed between the head section and the third transition section;

[0015] The second horizontal section includes an equipment mounting section and multiple detachably mounted second adjustment sections, wherein the equipment mounting section is used to mount the pressure roller mechanism;

[0016] The fourth tilting section includes a tail section and at least one third adjustment section, wherein the third adjustment section is detachably disposed between the tail section and the fourth transition section.

[0017] Furthermore, both ends of the first chain plate are arc-shaped, and both ends of the second chain plate are arc-shaped;

[0018] The center of the pin at both ends of the first chain plate coincides with the center of the arc at both ends of the first chain plate, and the center of the pin at both ends of the second chain plate coincides with the center of the arc at both ends of the chain plate.

[0019] The outer edge of the bushing facing the first chain plate is flush with the outer edge of the end of the first chain plate; the outer edge of the bushing facing the second chain plate is flush with the outer edge of the end of the second chain plate.

[0020] Furthermore, the first chain plate is made of 42CrMo2, the second chain plate is made of 42CrMo2, the bushing is made of 42CrMo2, and the surfaces of the first chain plate, the second chain plate, and the bushing are all treated with wear-resistant materials.

[0021] Furthermore, it also includes a pressure roller mechanism; the pressure roller mechanism is provided above both the first transition section and the second transition section;

[0022] The pressure roller mechanism includes a pressure roller body, a main shaft, a bearing seat, a first bearing, and a second bearing; the bearing seat is fixed on two opposite side walls of the groove, the first bearing is provided in the bearing seat, and both ends of the main shaft extend into the bearing seat and pass through the first bearing; the second bearing is provided on the main shaft, and the pressure roller body is fitted onto the second bearing.

[0023] Furthermore, both the first bearing and the second bearing are self-lubricating sliding bearings.

[0024] Furthermore, it also includes a scraper disposed on the chain;

[0025] The width of the scraper is greater than or equal to 100 mm and less than or equal to 150 mm. The scraper has a plurality of filter holes, and the opening rate of the filter holes on the scraper is greater than or equal to 60%.

[0026] The beneficial effects of this utility model are:

[0027] The utility model provides a coal mine underground coal slurry dredging machine, comprising: a trough, a chain, and a guide channel; the guide channel is disposed in the trough, and the guide channel includes a first inclined section, a first transition section, a first horizontal section, a second transition section, and a second inclined section; the first inclined section, the first transition section, the first horizontal section, the second transition section, and the second inclined section are arranged sequentially, the included angle between the first inclined section and the first horizontal section is α1, and the included angle between the second inclined section and the first horizontal section is α2, wherein 90°<α1<180°; 90°<α2<180°; the chain includes multiple links connected sequentially in a ring shape, each link including: a first chain plate, a second chain plate, a pin, and a bushing; the first chain plate and the second chain plate are arranged opposite to each other, and their two ends are connected by the pin, the bushing being fitted over the pin; the thickness of the first chain plate is L1, and the thickness of the second chain plate is L2; ​​wherein 6mm≤L1≤8mm; 6mm≤L2≤8mm.

[0028] The first and second transition sections are used for chain transition, reducing resistance during chain operation. Preferably, the angle α1 between the first inclined section and the first horizontal section is greater than 90° and less than 180°, and the angle α2 between the second inclined section and the first horizontal section is greater than 90° and less than 180°. By setting the second transition section and the second inclined section, with both α1 and α2 of the second inclined section being greater than 90° and less than 180°, the chain runs more smoothly, thereby reducing resistance during chain operation and extending the chain's service life. Designing the thickness of the first chain plate 12 to be 6-8mm and the thickness of the second chain plate 12 to be 6-8mm maximizes the thickness of the first and second chain plates without affecting the existing groove, thereby improving the wear resistance of the first and second chain plates, significantly increasing the chain's service life, increasing maintenance intervals, and improving production efficiency. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the guide channel provided in an embodiment of this utility model;

[0031] Figure 2 A cross-sectional view of the guide channel provided in an embodiment of this utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the tank provided in an embodiment of the present utility model;

[0033] Figure 4 A schematic diagram of the chain structure provided in an embodiment of this utility model;

[0034] Figure 5 This is a structural schematic diagram of the chain from another perspective, provided for an embodiment of the present utility model.

[0035] Figure 6 This is a schematic diagram of the pressure roller mechanism provided in an embodiment of the present utility model;

[0036] Figure 7 This is a schematic diagram of the scraper provided in an embodiment of the present utility model.

[0037] Icons: 1-Tank body; 11-Third inclined section; 111-Head section; 12-Third transition section; 13-Second horizontal section; 14-Fourth transition section; 131-Equipment installation section; 15-Fourth inclined section; 151-Tail section; 16-First discharge port; 17-Second discharge port; 18-Mud tank;

[0038] 2-Chain; 21-First chain plate; 22-Second chain plate; 23-Pin; 24-Shaft sleeve;

[0039] 3-Guide track; 31-First inclined section; 32-First transition section; 33-First horizontal section; 34-Second transition section; 35-Second inclined section; 36-Wear-resistant plate; 37-Angle steel;

[0040] 4-Pressure roller mechanism; 41-Pressure roller body; 42-Main shaft; 43-Bearing housing; 44-First bearing; 45-Second bearing;

[0041] 5-Scraper; 51-Filter hole; 52-Firming plate. Detailed Implementation

[0042] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] like Figures 1 to 7 As shown, one embodiment of this utility model provides a coal mine underground coal slurry dredging machine, including: a trough 1, a chain 2, and a guide channel 3; the guide channel 3 is disposed in the trough 1, and the guide channel 3 includes a first inclined section 31, a first transition section 32, a first horizontal section 33, a second transition section 34, and a second inclined section 35; the first inclined section 31, the first transition section 32, the first horizontal section 33, the second transition section 34, and the second inclined section 35 are arranged sequentially, the included angle between the first inclined section 31 and the first horizontal section 33 is α1, and the included angle between the second inclined section 35 and the first horizontal section 33 is α1. The included angle is α2, where 90° < α1 < 180°; 90° < α2 < 180°; the chain 2 includes multiple links connected in sequence and forming a ring, each link including: a first chain plate 21, a second chain plate 22, a pin 23, and a bushing 24; the first chain plate 21 and the second chain plate 22 are arranged opposite to each other, and the two ends of the first chain plate 21 and the second chain plate 22 are connected by the pin 23, and the bushing 24 is fitted over the pin 23; the thickness of the first chain plate 21 is L1, and the thickness of the second chain plate 22 is L2; ​​where 6mm ≤ L1 ≤ 8mm; 6mm ≤ L2 ≤ 8mm.

[0044] In this embodiment, the coal slurry dredging machine for underground coal mines includes a trough 1, a chain 2, and a guide channel 3. The trough 1 is used to receive coal slurry, and the guide channel 3 is located inside the trough 1 and extends along the side and bottom walls of the trough 1 to guide the chain 2 as it moves within the trough 1. The chain 2 partially slides within the guide channel 3. The guide channel 3 includes a first inclined section 31, a first transition section 32, a first horizontal section 33, a second transition section 34, and a second inclined section 35. The first inclined section 31, the first transition section 32, the first horizontal section 33, the second transition section 34, and the second inclined section 35 are connected sequentially. The first transition section 32 is located between the first inclined section 31 and the first horizontal section 33, and the second transition section 34 is located between the second inclined section 35 and the first horizontal section 33. The first transition section 32 and the second transition section 34 are used for the transition of the chain 2, reducing the resistance of the chain 2 during operation. Preferably, the included angle α1 between the first inclined section 31 and the first horizontal section 33 is greater than 90° and less than 180°, and the included angle α2 between the second inclined section 35 and the first horizontal section 33 is greater than 90° and less than 180°. By setting the second transition section 34 and the second inclined section 35, and with both the second inclined section 35 and α2 being greater than 90° and less than 180°, the chain 2 runs more smoothly, thereby reducing the resistance of the chain 2 during operation and extending the service life of the chain 2.

[0045] The aforementioned chain 2 comprises several links, all of which are sequentially rotatably connected. Each link includes a first chain plate 21, a second chain plate 22, a pin 23, and a bushing 24. The first chain plate 21 and the second chain plate 22 are positioned opposite each other and are connected by the pin 23. The pin 23 also connects two adjacent links. The bushing 24 is fitted over the pin 23 and protects it, reducing wear and ensuring smooth operation. Furthermore, to improve the wear resistance of chain 2, the thickness of the first chain plate 21 is designed to be 6-8mm, and the thickness of the second chain plate 22 is designed to be 6-8mm. The thicknesses of the first chain plate 21 and the second chain plate 22 can be the same or different. By designing the thickness of the first chain plate 21 and the second chain plate 22 to be 6-8mm, the thickness of the first chain plate 21 and the second chain plate 22 can be maximized without affecting the existing groove 1, thereby improving the wear resistance of the first chain plate 21 and the second chain plate 22, significantly increasing the service life of chain 2, increasing the maintenance interval, and improving production efficiency.

[0046] The coal mine underground coal slurry dredging machine provided in this embodiment of the utility model, such as Figure 1 As shown, both the first transition segment 32 and the second transition segment 34 are arc-shaped, and the arc of the first transition segment 32 and the second transition segment 34 is π / 4.

[0047] In this embodiment, in order to enable the chain 2 to pass through the first transition section 32 and the second transition section 34 more smoothly and reduce the resistance of the chain 2 during operation, both the first transition section 32 and the second transition section 34 are arc-shaped, and the arc of the first transition section 32 and the second transition section 34 is π / 4. That is, the angle α1 between the first inclined section 31 and the first horizontal section 33 and the angle α2 between the second inclined section 35 and the first horizontal section 33 are both 135°.

[0048] The coal mine underground coal slurry dredging machine provided in this embodiment of the utility model, such as Figure 2 As shown, the guide channel 3 includes a wear-resistant plate 36 and an angle steel 37. The wear-resistant plate 36 and the angle steel 37 are detachably connected by countersunk bolts. The angle steel 37 is welded to the inner wall of the groove 1. The wear-resistant plate 36 is used to guide the chain 2.

[0049] In this embodiment, the guide channel 3 includes a wear-resistant plate 36 and an angle steel 37. The wear-resistant plate 36 is mounted on the angle steel 37, which is welded to the inner wall of the groove 1. Two sets of wear-resistant plates 36 and angle steel 37 are arranged at intervals to form the guide channel 3 for guiding the chain 2. The wear-resistant plate 36 has countersunk holes, and it is connected to the angle steel 37 by countersunk bolts. This facilitates the replacement of the wear-resistant plate 36 and avoids affecting the sliding of the chain 2 within the guide channel 3.

[0050] The coal mine underground coal slurry dredging machine provided in this embodiment of the utility model, such as Figure 3 As shown, the tank 1 includes a third inclined section 11, a third transition section 12, a second horizontal section 13, a fourth transition section 14, and a fourth inclined section 15; the third inclined section 11, the third transition section 12, the second horizontal section 13, the fourth transition section 14, and the fourth inclined section 15 are arranged sequentially, the first inclined section 31 is located within the third inclined section 11, the first transition section 32 is located within the third transition section 12, the first horizontal section 33 is located within the second horizontal section 13, the second transition section 34 is located within the fourth transition section 14, and the second inclined section 35 is located within the fourth inclined section 15.

[0051] Preferably, in this embodiment, the tank 1 of the underground coal slurry sludge cleaning machine matches the guide channel 3 of the aforementioned underground coal slurry sludge cleaning machine. The tank 1 of the underground coal slurry sludge cleaning machine includes a third inclined section 11, a third transition section 12, a second horizontal section 13, a fourth transition section 14, and a fourth inclined section 15. The third inclined section 11, the third transition section 12, the second horizontal section 13, the fourth transition section 14, and the fourth inclined section 15 are connected sequentially; wherein the third inclined section 11 and the fourth inclined section 15 are inclined, the two ends of the third transition section 12 are connected to the third inclined section 11 and the second horizontal section 13, and the two ends of the fourth transition section 14 are connected to the second horizontal section 13 and the fourth inclined section 15. As mentioned above, the first transition section 32 and the second transition section 34 are arcs with an arc radius of π / 4. Correspondingly, the third transition section 12 and the fourth transition section 14 in this embodiment are also arcs with an arc radius of π / 4. During assembly, the first inclined section 31 is assembled into the third inclined section 11, the first transition section 32 is assembled into the third transition section 12, the first horizontal section 33 is assembled into the second horizontal section 13, the second transition section 34 is assembled into the fourth transition section 14, and the second inclined section 35 is assembled into the fourth inclined section 15. The third inclined section 11 is used to install the drive motor and other structures mentioned above.

[0052] The coal mine underground coal slurry dredging machine provided in this embodiment of the invention, such as... Figure 3 As shown, the third inclined section 11 includes a head section 111 and at least one first adjusting section, the first adjusting section being detachably disposed between the head section 111 and the third transition section 12; the second horizontal section 13 includes an equipment mounting section 131 and a plurality of detachably disposed second adjusting sections, the equipment mounting section 131 being used to mount the pressure roller mechanism 4; the fourth inclined section 15 includes a tail section 151 and at least one second adjusting section, the second adjusting section being detachably disposed between the tail section 151 and the fourth transition section 14.

[0053] In this embodiment, the first, second, and third adjustment sections are all open at both ends. The number of the first, second, and third adjustment sections is set according to the actual usage. The first adjustment section is detachably located between the head section 111 and the third transition section 12 and is used to adjust the length of the second inclined section 35. When there is only one first adjustment section, both ends of the first adjustment section are connected to the head section 111 and the third transition section 12 respectively and are internally connected. When there are multiple first adjustment sections, all the first adjustment sections are connected sequentially and are internally connected. One of the first adjustment sections located at both ends is connected to the head section 111 and is internally connected, while the other is connected to the third transition section 12 and is internally connected. The equipment installation section 131 is used to install the pressure roller mechanism 4 mentioned below. One equipment installation section 131 can be set and located at the front end of the fourth inclined section 15. Two equipment installation sections 131 can also be set, so that the rear end of the third inclined section 11 is also provided with an equipment installation section 131. The second horizontal section 13 includes multiple detachable second adjustment sections to adjust the length of the second horizontal section 13; the third adjustment section is detachably disposed between the fourth transition section 14 and the tail section 151 to adjust the length of the fourth tilt section 15. When there is only one third adjustment section, both ends of the third adjustment section are connected to the fourth transition section 14 and the tail section 151 respectively and are internally connected. When there are multiple third adjustment sections, all the third adjustment sections are connected in sequence and are internally connected. Of the third adjustment sections located at both ends, one is connected to the tail section 151 and is internally connected, and the other is connected to the fourth transition section 14 and is internally connected.

[0054] In this embodiment, by setting up a detachable first adjustment section, a second adjustment section, and a third adjustment section, the length of the tank 1 can be adjusted, eliminating the need to design multiple specifications and models during production, thus facilitating manufacturing. At the same time, the tank 1 can be transported and installed in sections underground, which can effectively solve the problem of installation and transportation difficulties caused by the limited space underground.

[0055] It should be noted that the guide channel 3 is not segmented. That is, the first inclined section 31, the first transition section 32, the first horizontal section 33, the second transition section 34, and the second inclined section 35 are all integral structures. The guide channel 3 is manufactured after the design of the trough 1 is completed, so as to reduce the gaps in the guide channel 3, thereby reducing the wear of the chain 2 and preventing the chain 2 from jamming.

[0056] Optionally, in this embodiment, the head section 111, the first adjustment section, the third transition section 12, the second adjustment section, the third adjustment section, the fourth transition section 14, the tail section 151, and the equipment installation section 131 are all detachably connected by flanges.

[0057] The coal mine underground coal slurry dredging machine provided in this embodiment of the utility model, such as Figure 4 and Figure 5As shown, the two ends of the first chain plate 21 are arc-shaped, and the two ends of the second chain plate 22 are arc-shaped; the center of the pin 23 at both ends of the first chain plate 21 coincides with the center of the arc at both ends of the first chain plate 21, and the center of the pin 23 at both ends of the second chain plate 22 coincides with the center of the arc at both ends of the chain plate; the outer edge of the bushing 24 facing the first chain plate 21 is flush with the outer edge of the end of the first chain plate 21; the outer edge of the bushing 24 facing the second chain plate 22 is flush with the outer edge of the end of the second chain plate 22.

[0058] In this embodiment, both ends of the first chain plate 21 and the second chain plate 22 are arc-shaped to reduce problems such as jamming during use, making the chain 2 run more smoothly. During assembly, the axes of the two pins 23 coincide with the arc centers of their corresponding ends. Since the bushings 24 are fitted over the pins 23, the axes of the two bushings 24 coincide with the arc centers of their corresponding segments. Preferably, the outer edge of the bushing 24 facing the first chain plate 21 is flush with the outer edge of the end of the first chain plate 21, and the outer edge of the bushing 24 facing the second chain plate 22 is flush with the outer edge of the end of the second chain plate 22. That is, the outer diameter of the bushing 24 is the same as the diameter of the arcs at both ends of the first chain plate 21, and the outer diameter of the bushing 24 is the same as the outer diameter of the arcs at both ends of the second chain plate 22. In this way, during use, the bushing 24 also comes into contact with the guide rail 3, and the bushing 24 wears down simultaneously with the first chain plate 21 and the second chain plate 22, thereby increasing the service life of the chain 2 and avoiding frequent replacements.

[0059] The coal slurry dredging machine for underground coal mines provided in this embodiment of the utility model is made of 42CrMo2 material for the first chain plate 21, the second chain plate 22, and the bushing 24. The surfaces of the first chain plate 21, the second chain plate 22, and the bushing 24 are all treated with wear-resistant materials to improve the wear resistance of the chain 2.

[0060] The coal mine underground coal slurry dredging machine provided in this embodiment of the utility model, such as Figure 6 As shown, it also includes a pressure roller mechanism 4; a pressure roller mechanism 4 is provided above both the first transition section 32 and the second transition section 34; the pressure roller mechanism 4 includes a pressure roller body 41, a main shaft 42, a bearing seat 43, a first bearing 44 and a second bearing 45; the two side walls of the groove 1 are fixedly provided with bearing seats 43, the bearing seats 43 are provided with the first bearing 44, the two ends of the main shaft 42 extend into the bearing seats 43 and pass through the first bearing 44 respectively; the main shaft 42 is provided with the second bearing 45, and the pressure roller body 41 is fitted on the second bearing 45.

[0061] In this embodiment, a pressure roller mechanism 4 is provided above the first transition section 32 and the second transition section 34 to limit and guide the chain 2, thereby reducing wear on the chain 2 and improving its service life. The pressure roller mechanism 4 includes a pressure roller body 41, a main shaft 42, a bearing seat 43, a first bearing 44, and a second bearing 45. The bearing housing 43 is used to support the first bearing 44. Two bearing housings 43 are provided, and correspondingly, two first bearings 44 are provided. Each bearing housing 43 is provided with a first bearing 44. The groove 1 has two opposing side walls, which are side walls along the length of the groove 1. The two bearing housings 43 are respectively fixed on the two opposing side walls of the groove 1, and the first bearings 44 in the two bearing housings 43 are coaxially arranged. The bearing housings 43 and the first bearings 44 cooperate to support the main shaft 42. The two ends of the main shaft 42 are respectively inserted into the first bearings 44 in the bearing housings 43 so that the main shaft 42 can rotate. The main shaft 42 is used to support the pressure roller body 41. The pressure roller body 41 is installed on the main shaft 42 through the second bearing 45. In this way, the pressure roller body 41 and the main shaft 42 can also rotate relative to each other.

[0062] In this embodiment, first bearings 44 and bearing seats 43 are provided at both ends of the main shaft 42 to enable the main shaft 42 to rotate. The pressure roller body 41 is mounted on the main shaft 42 via a second bearing 45 and can rotate on the main shaft 42. The pressure roller body 41 guides the chain 2, and there is rolling friction between the pressure roller body 41 and the chain 2, which extends the service life of the chain 2 and the pressure roller body 41. Moreover, the double rolling arrangement between the pressure roller body 41 and the main shaft 42, and between the main shaft 42 and the groove 1, means that even if one of the rotations at both ends of the main shaft 42 or the rotation between the pressure roller and the main shaft 42 fails, the pressure roller body 41 and the chain 2 will still experience rolling friction, thereby further extending the maintenance cycle of the pressure roller body 41 and improving its service life.

[0063] The coal mine underground coal slurry dredging machine provided in this embodiment of the utility model has a first bearing 44 and a second bearing 45 that are both self-lubricating sliding bearings to improve the service life of the pressure roller mechanism 4.

[0064] The coal mine underground coal slurry dredging machine provided in this embodiment of the utility model, such as Figure 7 As shown, it also includes a scraper 5 disposed on the chain 2; the width of the scraper 5 is greater than or equal to 100mm and less than or equal to 150mm, and the scraper 5 is provided with a plurality of water filtering holes 51, and the opening rate of the water filtering holes 51 on the scraper 5 is greater than or equal to 60%.

[0065] In this embodiment, to address the issue of high resistance when scraping coal sludge with scraper 5, the width of scraper 5 is d, where 100mm ≤ d ≤ 150mm. In this embodiment, by shortening the width of scraper 5 in the underground coal sludge cleaning machine, the settled coal sludge in the trough 1 is discharged through a "hollowing out" method, thereby reducing the resistance of scraper 5 during operation and preventing excessive resistance that could lead to a high failure rate in the underground coal sludge cleaning machine. Furthermore, in this embodiment, several filter holes 51 are also provided on scraper 5 for coal sludge dewatering, further reducing the resistance of scraper 5 during operation. It should be noted that since the width of scraper 5 is greater than or equal to 100mm and less than or equal to 150mm, the width of the trough 1 needs to be adjusted accordingly to avoid creating a "dead zone" within the trough 1. The scraper 5 has an opening rate of 60% or more to reduce the resistance during operation and facilitate coal slime dewatering, resulting in lower moisture content in the discharged coal slime. This prevents the coal slime from slipping on the conveyor belt during subsequent conveyor transport.

[0066] To improve the strength of the coal scraper 5, the thickness of the scraper 5 is greater than or equal to 18mm. The diameter of the filter holes 51 is D, where 15mm≤D≤25mm, to prevent excessive coal sludge from penetrating the filter holes 51 and causing the scraper 5 to malfunction, and also to prevent the filter holes 51 from becoming clogged. All the filter holes 51 are divided into multiple rows along the height direction of the scraper 5, with each row including multiple filter holes 51, and all the filter holes 51 in each row are spaced apart along the width direction of the scraper 5, with the filter holes 51 in adjacent rows being staggered. The scraper 5 is provided with stiffeners 52 to improve the strength of the scraper 5 and prevent damage during operation. The stiffeners 52 are located on the non-working surface of the scraper 5 to avoid affecting the normal operation of the scraper 5; the scraper 5 has two opposing sides, the side in contact with the coal sludge is the working surface of the scraper 5, and the other side is the non-working surface. The stiffening plate 52 is set between two adjacent rows of filter holes 51 to avoid the stiffening plate 52 affecting the normal function of the scraper 5 of the coal slurry cleaning machine in the coal mine.

[0067] In this embodiment, if Figure 3As shown, the head section 111 has a first discharge port 16 at the end away from the third transition section 12, which is used to discharge coal slurry. The bottom wall of the second horizontal section 13 near the fourth transition section 14 has a second discharge port 17. Coal slurry in a muddy state cannot be discharged from the first discharge port 16 due to its high fluidity. Preferably, in this embodiment, the bottom wall of the second horizontal section 13 near the fourth transition section 14 has a second discharge port 17 for discharging the muddy coal slurry. The drive motor drives the chain 2 to move the scraper 5 in a first direction. The scraper 5 can scrape large particles of coal slurry to the first discharge port 16. When the drive motor drives the chain 2 to move the scraper 5 in a second direction, the scraper 5 can scrape the muddy coal slurry to the second discharge port 17. The first direction and the second direction are opposite in direction. The mud tank 18 is connected to the second discharge port 17 and is used to receive the coal slime in the mud state discharged from the second discharge port 17. The mud tank 18 is equipped with a mud pump. When the coal slime in the mud state in the mud tank 18 accumulates to a certain amount, it can be transported to the filter press for filtration by the mud pump.

[0068] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0069] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal mine underground coal slurry dredging machine, characterized in that, include: The trough (1), chain (2), and guide rail (3); The guide channel (3) is disposed in the groove (1), and the guide channel (3) includes a first inclined section (31), a first transition section (32), a first horizontal section (33), a second transition section (34), and a second inclined section (35); The first inclined segment (31), the first transition segment (32), the first horizontal segment (33), the second transition segment (34), and the second inclined segment (35) are arranged sequentially. The angle between the first inclined segment (31) and the first horizontal segment (33) is α1, and the angle between the second inclined segment (35) and the first horizontal segment (33) is α2, wherein 90° < α1 < 180°; 90° < α2 < 180°; The chain (2) includes multiple links connected in sequence and forming a ring. The links include: a first chain plate (21), a second chain plate (22), a pin (23), and a bushing (24). The first chain plate (21) and the second chain plate (22) are arranged opposite to each other, and the two ends of the first chain plate (21) and the second chain plate (22) are connected by the pin (23), and the bushing (24) is fitted outside the pin (23); The thickness of the first chain plate (21) is L1, and the thickness of the second chain plate (22) is L2; ​​wherein, 6mm≤L1≤8mm; 6mm≤L2≤8mm.

2. The coal mine underground coal slurry dredging machine according to claim 1, characterized in that, Both the first transition segment (32) and the second transition segment (34) are arc-shaped, and the arc of the first transition segment (32) and the second transition segment (34) is π / 4.

3. The coal mine underground coal slurry dredging machine according to claim 1, characterized in that, The guide channel (3) includes a wear-resistant plate (36) and an angle steel (37). The wear-resistant plate (36) and the angle steel (37) are detachably connected by countersunk bolts. The angle steel (37) is welded to the inner wall of the groove (1). The wear-resistant plate (36) is used to guide the chain (2).

4. The coal mine underground coal slurry dredging machine according to claim 1, characterized in that, The tank (1) includes a third inclined section (11), a third transition section (12), a second horizontal section (13), a fourth transition section (14), and a fourth inclined section (15); The third inclined section (11), the third transition section (12), the second horizontal section (13), the fourth transition section (14), and the fourth inclined section (15) are arranged sequentially. The first inclined section (31) is located within the third inclined section (11), the first transition section (32) is located within the third transition section (12), the first horizontal section (33) is located within the second horizontal section (13), the second transition section (34) is located within the fourth transition section (14), and the second inclined section (35) is located within the fourth inclined section (15).

5. The coal mine underground coal slurry dredging machine according to claim 4, characterized in that, The third tilting section (11) includes a head section (111) and at least one first adjustment section, wherein the first adjustment section is detachably disposed between the head section (111) and the third transition section (12); The second horizontal section (13) includes an equipment mounting section (131) and a plurality of detachably mounted second adjustment sections, wherein the equipment mounting section (131) is used to mount the pressure roller mechanism (4); The fourth tilting section (15) includes a tail section (151) and at least one third adjustment section, the third adjustment section being detachably disposed between the tail section (151) and the fourth transition section (14).

6. The coal mine underground coal slurry dredging machine according to claim 1, characterized in that, The two ends of the first chain plate (21) are arc-shaped, and the two ends of the second chain plate (22) are arc-shaped; The center of the pin (23) at both ends of the first chain plate (21) coincides with the arc center at both ends of the first chain plate (21), and the center of the pin (23) at both ends of the second chain plate (22) coincides with the arc center at both ends of the chain plate; The outer edge of the bushing (24) facing the first chain plate (21) is flush with the outer edge of the end of the first chain plate (21); the outer edge of the bushing (24) facing the second chain plate (22) is flush with the outer edge of the end of the second chain plate (22).

7. The coal mine underground coal slurry dredging machine according to claim 6, characterized in that, The first chain plate (21) is made of 42CrMo2, the second chain plate (22) is made of 42CrMo2, the bushing (24) is made of 42CrMo2, and the surfaces of the first chain plate (21), the second chain plate (22) and the bushing (24) are all treated with wear resistance.

8. The coal mine underground coal slurry dredging machine according to claim 1, characterized in that, It also includes a pressure roller mechanism (4); the pressure roller mechanism (4) is provided above both the first transition section (32) and the second transition section (34); The pressure roller mechanism (4) includes a pressure roller body (41), a main shaft (42), a bearing seat (43), a first bearing (44), and a second bearing (45); the bearing seat (43) is fixed on two opposite side walls of the groove (1), the first bearing (44) is provided in the bearing seat (43), and the two ends of the main shaft (42) extend into the bearing seat (43) and pass through the first bearing (44); the second bearing (45) is provided on the main shaft (42), and the pressure roller body (41) is fitted on the second bearing (45).

9. The coal mine underground coal slurry dredging machine according to claim 8, characterized in that, Both the first bearing (44) and the second bearing (45) are self-lubricating sliding bearings.

10. The coal mine underground coal slurry dredging machine according to claim 1, characterized in that, It also includes a scraper (5) disposed on the chain (2); The width of the scraper (5) is greater than or equal to 100 mm and less than or equal to 150 mm. The scraper (5) has a plurality of filter holes (51) and the opening rate of the filter holes (51) on the scraper (5) is greater than or equal to 60%.

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