Coal slurry water dewatering device

Abstract

The oil cylinder body of a coal slurry water dewatering device driving oil cylinder and the dewatering cylinder body of a dewatering cylinder are fixedly connected with the oil cylinder fixed seat through a fixing mechanism; the driving oil cylinder is a bidirectional hydraulic cylinder, two horizontally arranged piston rods of the driving oil cylinder are connected with the dewatering cylinder piston rods of two dewatering cylinders through connecting pins; a 1# water guide groove of a water guide mechanism is arranged directly below the end cover water outlet of the dewatering cylinder, and a 4# water guide groove of a water guide mechanism is arranged directly below the clamping plate support frame of the dewatering cylinder. The driving oil cylinder is a bidirectional hydraulic cylinder, reciprocating movement of the driving oil cylinder can realize the effect that one driving oil cylinder drives two dewatering cylinders, and ensures continuous dewatering work. By controlling the extension and retraction of the piston rod of the rotary oil cylinder, the baffle driving connecting rod is rotated, the rotary shaft is further rotated, the baffle leaf handle is further rotated, and finally the water permeable baffle is rotated, so that the coal slurry block is pushed out of the dewatering cylinder body in the operation process of the water permeable piston.

Description

TECHNICAL FIELD

[0001] The present application relates to a dewatering device, in particular to a coal slime water dewatering device. BACKGROUND

[0002] In the process of coal mining, a large amount of coal slime water will be produced, and the commonly used coal slime water treatment methods have the following three kinds:

[0003] 1. Filter the sundries in the mine sewage by using the goaf: that is, the coal slime water is injected into the goaf from a high position, and after sedimentation and filtration in the goaf, the clean water flows out from a low position of the goaf, so as to achieve the purpose of filtering out the sundries in the mine sewage. Its advantages are: good filtering effect. But there are also the following problems:

[0004] First, it is greatly affected by the coal seam floor elevation of the goaf, generally requires a high water inlet elevation and a low water outlet elevation, and the water inlet and outlet are professionally reinforced;

[0005] Second, a major hidden danger is buried in the underground, once the goaf moves again and the coal pillar is damaged, a very serious flood accident may occur, which is a major safety hazard of the mine and has been prohibited.

[0006] 2. Conventional dewatering device, i.e. filter press dewatering, its working principle is: use a pressure pump to press the coal slime water into the closed filter chamber formed by the adjacent two filter plates, so as to form a pressure difference between the two sides of the filter cloth, thereby realizing solid-liquid separation. The filter press generally consists of a head plate, a tail plate, a filter plate, a hydraulic cylinder, a main beam, a transmission and a pulling device. The piston of the hydraulic cylinder pushes the head plate to press the filter plate against the adjacent filter plate to form a filter chamber, the coal slime water is sent into the filter chamber by the slurry pump, the water is discharged through the drain port through the filter cloth, and the solid slurry forms a filter cake in the filter chamber. When the filter chamber is filled with coal slime water, the high-pressure pump continues to pressurize the coal slime water to filter, so as to separate the solid and liquid in the filter chamber. Its problems are:

[0007] First, the equipment has large size, which is not convenient for simultaneous arrangement of multiple devices and is not convenient for application in the underground operation site;

[0008] Second, there are too many parts, the failure rate is high, and a purchased filter press in Chahasu Coal Mine has been disposed of;

[0009] Third, the working efficiency is low: the central water tank needs to be cleaned every 2 months, and each cleaning cycle takes 15-20 days, not only the cleaning frequency is high, but also the cleaning cycle is too long.

[0010] 3. Coal slurry water directly on the transportation system: namely, the slurry pump discharged coal slurry water directly to the mine main transportation system, without dehydration treatment. The problem of this treatment is: one is to cause the moisture content of raw coal to increase significantly, which seriously affects the coal quality; two is easy to block the plug of the coal preparation plant, which brings adverse effects to the production organization; three is that a large amount of coal slurry water enters the coal bunker, which will significantly increase the accident rate of coal bunker running, becoming a major safety hazard of the mine. SUMMARY

[0011] In order to solve the above problems, the purpose of the present application is to provide a coal slurry water dehydration device.

[0012] The present application is implemented by the following technical solutions:

[0013] A coal slurry water dehydration device, comprising an I-shaped steel rack, a driving oil cylinder and two dehydration cylinders are arranged on the I-shaped steel rack; three oil cylinder fixing seats are fixed on the I-shaped steel rack by bolts; the oil cylinder cylinder body of the driving oil cylinder and the dehydration cylinder cylinder body of the dehydration cylinder are fixedly connected with the oil cylinder fixing seat through a fixing mechanism;

[0014] The driving oil cylinder is a bidirectional hydraulic cylinder, and the two horizontally arranged piston rods of the driving oil cylinder are connected with the dehydration cylinder piston rods of the two dehydration cylinders through connecting pins;

[0015] A 1# water guide groove of the water guide mechanism is arranged directly below the end cover water outlet of the dehydration cylinder, and a 4# water guide groove of the water guide mechanism is arranged directly below the clamping plate support frame of the dehydration cylinder.

[0016] Further, the dehydration cylinder comprises a dehydration cylinder cylinder body, an end cover, a dehydration cylinder piston rod, a water permeable piston, a first annular clamping plate, a second annular clamping plate, a water permeable baffle, a clamping plate support frame and a baffle rotating mechanism;

[0017] The dehydration cylinder cylinder body is in a cylindrical structure with horizontal arrangement and open ends, and the end cover is arranged at one end of the dehydration cylinder cylinder body and fixed with the dehydration cylinder cylinder body through a spring expansion pin;

[0018] An end cover water outlet is formed in the bottom end of the end cover, which communicates the inside and outside of the dehydration cylinder cylinder body, and a center hole is formed in the center of the end cover;

[0019] The water permeable piston is movably arranged in the dehydration cylinder cylinder body, and the water permeable piston is arranged in parallel with the end cover, and the outer diameter of the shell of the water permeable piston is smaller than the inner diameter of the dehydration cylinder cylinder body;

[0020] A through hole is formed in the center of the water-permeable piston; one end of the dehydrating cylinder piston rod is arranged in the through hole, and a limiting ring is arranged on the dehydrating cylinder piston rod on both sides of the water-permeable piston, and the limiting ring is fixed to the dehydrating cylinder piston rod by means of a spring pin;

[0021] The first annular clamping plate is coaxially arranged with the second annular clamping plate, bolt holes are formed in one-half of the circumferences of the first annular clamping plate and the second annular clamping plate, and the first annular clamping plate and the second annular clamping plate are fixed by adjusting bolts;

[0022] An arched clamping plate support frame is welded to one side of the second annular clamping plate away from the first annular clamping plate, and the bottom end of the clamping plate support frame is fixedly connected to the I-beam frame;

[0023] The water-permeable baffle is further arranged in the gap between the first annular clamping plate and the second annular clamping plate, one end of the baffle handle is fixedly connected to the water-permeable baffle, and the other end of the baffle handle is fixedly connected to the rotating shaft of the baffle rotating mechanism arranged outside the dehydrating cylinder body;

[0024] A fluid inlet is formed in the top of the dehydrating cylinder body close to the first annular clamping plate.

[0025] Further, the baffle rotating mechanism comprises a rotating oil cylinder, a baffle driving connecting rod, a rotating shaft, and a rotating shaft seat;

[0026] The cylinder body of the rotating oil cylinder is rotationally connected to the I-beam frame, the bottom end of the rotating shaft seat is fixedly connected to the I-beam frame, and the rotating shaft is rotationally arranged at the top end of the rotating shaft seat;

[0027] The piston rod of the rotating oil cylinder is rotationally connected to one end of the baffle driving connecting rod, and the other end of the baffle driving connecting rod is fixedly connected to the rotating shaft.

[0028] Further, the water-permeable piston comprises an annular shell with an internal cavity and a through hole formed in the center, an opening is formed in one side of the shell, a filter baffle is arranged in the interior of the shell on the opening side, the filter baffle is fixed to the shell by means of a spring pin, a filter device is further arranged in the interior of the shell on the inner side of the filter baffle, the shapes and sizes of the filter baffle and the filter device are matched with the shape and size of the interior of the shell, and a plurality of water-permeable holes are formed in the side of the shell away from the filter baffle and the filter baffle.

[0029] Further, the water-permeable baffle comprises a hollow interior and a solid center annular shell, one side of the shell is open, a filter baffle is arranged in the interior of the shell on the open side, the filter baffle is fixed to the shell by a spring pin; a filter device is further arranged in the interior of the shell on the inner side of the filter baffle; the shape and size of the filter baffle and the filter device are matched with the shape and size of the interior of the shell; a plurality of water-permeable holes are formed on the side of the shell away from the filter baffle and on the filter baffle.

[0030] Further, the filter device comprises two layers of stainless steel filter screens, and filter cotton is arranged between the two layers of stainless steel filter screens; the shape and size of the stainless steel filter screens and the filter cotton are matched with the shape and size of the interior of the shell.

[0031] Further, a transparent water baffle plate is arranged at one end of the clamp support frame away from the second annular clamp plate, and the transparent water baffle plate is fixed to the clamp support frame by screws.

[0032] Further, the fixing mechanism comprises two semicircular fixing blocks, the two semicircular fixing blocks are fixed relative to each other by bolts, the bottom end of the lower semicircular fixing block is welded to the oil cylinder fixing seat; annular fixing bands are respectively arranged on the outer periphery of the dehydration cylinder body and the cylinder body of the driving oil cylinder at both ends of the two semicircular fixing blocks.

[0033] Further, the water guide mechanism comprises a 1# water guide groove, a 1# water guide pipe, a 2# water guide groove, a 2# water guide pipe, a 3# water guide groove, a 3# water guide pipe, a 4# water guide groove, a 4# water guide pipe, a fixed pulley, a weight and a steel wire rope;

[0034] The bottom end of the 1# water guide groove is communicated with the 2# water guide groove through the 1# water guide pipe, and a water guide groove water outlet is formed at the bottom end of the 2# water guide groove;

[0035] The fixed pulley is arranged on the I-shaped steel frame, the bottom of one end of the 4# water guide groove close to the dehydration cylinder is fixedly connected to the fixed pulley, and a weight is suspended by a steel wire rope on the side of the fixed pulley close to the dehydration cylinder;

[0036] The 3# water guide groove is arranged directly below one end of the 4# water guide groove close to the dehydration cylinder, the water outlet of the 3# water guide groove is communicated with the 3# water guide pipe through the 4# water guide pipe, and the 3# water guide pipe is communicated with the 2# water guide groove through the 2# water guide pipe.

[0037] Further, it further includes coal slime water storage pool, the bottom plate of coal slime water storage pool is inclined along the length direction; coal slime dredging mouth is set up at the bottom end of the side wall of coal slime water storage pool corresponding to the slope bottom of the bottom plate of coal slime water storage pool, and the dredging cover plate is fixed by bolt at the coal slime dredging mouth; coal slime water outlet is set up on the dredging cover plate, and the water outlet steel pipe is welded on the outside of the coal slime water outlet, and the quick connector is arranged at the other end of the water outlet steel pipe, and the quick connector is connected with the fluid inlet of the dehydration cylinder through the water outlet hose.

[0038] Advantages of the present application:

[0039] 1. By setting coal slime water storage pool on the roadway, a buffer space is provided for coal slime water, and the continuity of dehydration work can be improved by buffering the coal slime water in the coal slime water storage pool first.

[0040] 2. The driving oil cylinder is a bidirectional hydraulic cylinder, and the driving oil cylinder reciprocates to realize the effect of driving two dehydration cylinders by one driving oil cylinder, so that the continuous dehydration work is ensured.

[0041] 3. By controlling the extension and retraction of the piston rod of the rotary oil cylinder, the baffle driving link is rotated, the rotary shaft is further rotated, the baffle handle is further rotated, and finally the water permeable baffle is rotated, so that the coal slime block is pushed out of the dehydration cylinder body during the operation of the water permeable piston.

[0042] 4. The bottom of the one end of the 4# water guide groove near the dehydration cylinder is fixedly connected with the fixed pulley, and the weight is suspended on the side of the fixed pulley near the dehydration cylinder through the steel wire rope; after the coal slime block generated after dehydration is pushed out of the dehydration cylinder body and slides to the transportation system, the 4# water guide groove is restored to the original position under the action of the weight. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0044] Figure 1 It is the side structure schematic diagram of coal slime water storage pool in the embodiment;

[0045] Figure 2 It is the front structure schematic diagram of coal slime water storage pool in the embodiment;

[0046] Figure 3 It is the whole connection relationship schematic diagram of driving oil cylinder and dehydration cylinder in the embodiment;

[0047] Figure 4 This is a schematic diagram of the dehydration cylinder in this embodiment;

[0048] Figure 5 This is a schematic diagram of the baffle rotation mechanism in this embodiment;

[0049] Figure 6 This is a schematic diagram of the permeable piston in this embodiment;

[0050] Figure 7 This is a schematic diagram of the permeable baffle in this embodiment;

[0051] Figure 8 This is a schematic diagram of the end cap of the dehydration cylinder in this embodiment.

[0052] In the diagram: 1. I-beam frame; 2. Drive cylinder; 3. Dehydration cylinder; 31. Dehydration cylinder body; 32. End cap; 33. Dehydration cylinder piston rod; 34. Water-permeable piston; 35. First annular clamp; 36. Second annular clamp; 37. Water-permeable baffle; 38. Clamp support frame; 39. Baffle rotation mechanism; 391. Baffle handle; 392. Rotating cylinder; 393. Baffle drive connecting rod; 394. Rotating shaft; 395. Rotating shaft seat; 310. End cap outlet; 311. Center hole; 312. Fluid inlet; 313. Transparent baffle; 314. Adjusting bolt; 315. Cylinder fixing. 4. Seat; 5. Fixing mechanism; 51. Semi-circular fixing block; 52. Fixing belt; 6. Water guiding mechanism; 61. Water guiding channel 1; 62. Water guiding pipe 1; 63. Water guiding channel 2; 64. Water guiding channel 3; 65. Water guiding pipe 3; 66. Water guiding channel 4; 67. Water guiding pipe 4; 68. Fixed pulley; 69. Weight; 610. Steel wire rope; 611. Water guiding channel outlet; 612. Coal slurry water storage tank; 7. Dredging cover plate; 71. Coal slurry water outlet; 72. Filter baffle; 8. Limiting ring; 9. Filter screen; 10. Filter cotton; 11. Shell; 12. Roadway; 13. Detailed implementation method:

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] Example 1:

[0055] like Figure 1 —7 shows a coal slurry dewatering device, including an I-beam frame 1, on which a drive cylinder 2 and two dewatering cylinders 3 are provided; three cylinder mounting seats 4 are fixed to the I-beam frame 1 by bolts; the cylinder body of the drive cylinder 2 and the cylinder body 31 of the dewatering cylinder 3 are both fixedly connected to the cylinder mounting seats 4 by a fixing mechanism 5.

[0056] The driving oil cylinder 2 is a bidirectional hydraulic cylinder, and two horizontally arranged piston rods of the driving oil cylinder 2 are connected with the dehydration cylinder piston rods 33 of the two dehydration cylinders 3 through connecting pins respectively;

[0057] A 1# water guide groove 61 of the water guide mechanism 6 is arranged directly below the end cover 32 outlet of the dehydration cylinder 3, and a 4# water guide groove 67 of the water guide mechanism 6 is arranged directly below the clamping plate support frame 38 of the dehydration cylinder 3.

[0058] Further, the dehydration cylinder 3 comprises a dehydration cylinder cylinder body 31, an end cover 32, a dehydration cylinder piston rod 33, a water permeable piston 34, a first annular clamping plate 35, a second annular clamping plate 36, a water permeable baffle 37, a clamping plate support frame 38, and a baffle rotating mechanism 39;

[0059] The dehydration cylinder cylinder body 31 is in a horizontally arranged, open-ended cylindrical structure, and the end cover 32 is arranged at one end of the dehydration cylinder cylinder body 31 and fixed with the dehydration cylinder cylinder body 31 through a spring expansion pin;

[0060] An end cover outlet 310 for communicating the inside and outside of the dehydration cylinder cylinder body 31 is arranged at the bottom end of the end cover 32, and a center hole 311 is arranged at the center of the end cover 32;

[0061] The water permeable piston 34 is movably arranged in the dehydration cylinder cylinder body 31, and the water permeable piston 34 is arranged in parallel with the end cover 32, and the outer diameter of the shell 12 of the water permeable piston 34 is smaller than the inner diameter of the dehydration cylinder cylinder body 31;

[0062] A through hole is arranged at the center of the water permeable piston 34, and one end of the dehydration cylinder piston rod 33 is arranged in the through hole, and a limiting ring 9 is arranged on the dehydration cylinder piston rod 33 on both sides of the water permeable piston 34, and the limiting ring 9 is fixed with the dehydration cylinder piston rod 33 through a spring expansion pin;

[0063] The first annular clamping plate 35 is fixed at the other end of the dehydration cylinder cylinder body 31, the second annular clamping plate 36 is arranged on the side away from the first annular clamping plate 35 of the dehydration cylinder cylinder body 31, the first annular clamping plate 35 and the second annular clamping plate 36 are coaxially arranged, bolt holes are arranged on one sixth of the circumference of the first annular clamping plate 35 and the second annular clamping plate 36, and the first annular clamping plate 35 and the second annular clamping plate 36 are fixed through adjusting bolts 314;

[0064] An arc-shaped clamping plate support frame 38 is welded on the side away from the second annular clamping plate 36 of the first annular clamping plate 35, and the bottom end of the clamping plate support frame 38 is fixedly connected with the I-beam frame 1;

[0065] A water permeable baffle 37 is also arranged in the gap between the first and second annular clamping plates 35 and 36, one end of a baffle handle 391 is fixedly connected with the water permeable baffle 37, and the other end of the baffle handle 391 is fixedly connected with a rotating shaft 394 of a baffle rotating mechanism 39 arranged outside the dehydration cylinder body 31;

[0066] A fluid inlet 312 is arranged at the top of the dehydration cylinder body 31 close to the first annular clamping plate 35.

[0067] Further, the baffle rotating mechanism 39 comprises a rotating oil cylinder 392, a baffle driving connecting rod 393, a rotating shaft 394 and a rotating shaft seat 395.

[0068] The cylinder body of the rotating oil cylinder 392 is rotationally connected with the I-beam frame 1, the bottom end of the rotating shaft seat 395 is fixedly connected with the I-beam frame 1, and the rotating shaft 394 is rotationally arranged at the top end of the rotating shaft seat 395.

[0069] The piston rod of the rotating oil cylinder 392 is rotationally connected with one end of the baffle driving connecting rod 393, and the other end of the baffle driving connecting rod 393 is fixedly connected with the rotating shaft 394.

[0070] Further, the water permeable piston 34 comprises an annular shell 12 with an internal cavity and a through hole arranged at the center, one side of the shell 12 is open, a filter baffle 8 is arranged inside the shell 12 at the open side, the filter baffle 8 is fixedly connected with the shell 12 through a spring pin, a filter device is further arranged inside the shell 12 at the inner side of the filter baffle 8, the shapes and sizes of the filter baffle 8 and the filter device are matched with the shape and size of the inside of the shell 12, and a plurality of water permeable holes are arranged on the side surface of the shell 12 away from the filter baffle 8 and on the filter baffle 8. The through hole arranged at the center of the shell 12 of the water permeable piston 34 is used for mounting the dehydration cylinder piston rod 33.

[0071] The water permeable baffle 37 comprises an annular shell 12 with an internal cavity and a solid structure at the center, one side of the shell 12 is open, a filter baffle 8 is arranged inside the shell 12 at the open side, the filter baffle 8 is fixedly connected with the shell 12 through a spring pin, a filter device is further arranged inside the shell 12 at the inner side of the filter baffle 8, the shapes and sizes of the filter baffle 8 and the filter device are matched with the shape and size of the inside of the shell 12, and a plurality of water permeable holes are arranged on the side surface of the shell 12 away from the filter baffle 8 and on the filter baffle 8. The solid structure at the center of the shell 12 of the water permeable baffle 37 is used for supporting the pressure transmitted by the matched filter baffle 8 to prevent the filter baffle 8 from deforming.

[0072] The filter device comprises two layers of stainless steel filter screens 10, and filter cotton 11 is arranged between the two layers of stainless steel filter screens 10; the shapes and sizes of the stainless steel filter screens 10 and the filter cotton 11 are matched with the shape and size of the inside of the shell 12.

[0073] Further, a transparent water baffle 313 is arranged at one end of the clamping plate support frame 38 away from the second annular clamping plate 36, and the transparent water baffle 313 is fixed to the clamping plate support frame 38 by screws.

[0074] Further, the fixing mechanism 5 includes two semicircular fixing blocks 51 fixed relative to each other by bolts, and the bottom end of the lower semicircular fixing block 51 is welded to the oil cylinder fixing seat 4. Annular fixing bands 52 are arranged on the outer periphery of the cylinder body 31 of the dehydration cylinder and the cylinder body of the driving oil cylinder 2 at both ends of the two semicircular fixing blocks 51.

[0075] Further, the water guide mechanism 6 includes a 1# water guide groove 61, a 1# water guide pipe 62, a 2# water guide groove 63, a 2# water guide pipe 64, a 3# water guide groove 65, a 3# water guide pipe 66, a 4# water guide groove 67, a 4# water guide pipe 68, a fixed pulley 69, a weight 610, and a steel wire rope 611.

[0076] The bottom end of the 1# water guide groove 61 is communicated with the 2# water guide groove 63 through the 1# water guide pipe 62, and a water outlet 612 is arranged at the bottom end of the 2# water guide groove 63.

[0077] The fixed pulley 69 is arranged on the I-beam frame 1, and the bottom of one end of the 4# water guide groove 67 close to the dehydration cylinder 3 is fixedly connected with the fixed pulley 69. The weight 610 is suspended on the steel wire rope 611 on the side of the fixed pulley 69 close to the dehydration cylinder 3.

[0078] The 3# water guide groove 65 is arranged directly below the one end of the 4# water guide groove 67 close to the dehydration cylinder 3, the water outlet of the 3# water guide groove 65 is communicated with the 3# water guide pipe 66 through the 4# water guide pipe 68, and the 3# water guide pipe 66 is communicated with the 2# water guide groove 63 through the 2# water guide pipe 64.

[0079] Further, it further includes a coal slurry water storage tank 7, and the bottom plate of the coal slurry water storage tank 7 is inclined along the length direction; a coal slurry dredging opening is arranged at the bottom end of the side wall of the coal slurry water storage tank 7 corresponding to the slope bottom of the bottom plate of the coal slurry water storage tank 7, and a dredging cover plate 71 is fixed on the coal slurry dredging opening by bolts; a coal slurry water outlet 72 is arranged on the dredging cover plate 71, and a water outlet steel pipe is welded to the outside of the coal slurry water outlet 72, and a quick connector is arranged at the other end of the water outlet steel pipe, and the quick connector is connected with the fluid inlet 312 of the dehydration cylinder 3 through a water outlet hose.

[0080] Working principle:

[0081] By arranging the coal slurry water storage tank 7 inside the roadway 13 close to the side, a buffer space is provided for the coal slurry water, and the coal slurry water first enters the coal slurry water storage tank 7 for buffering, so that the continuity of the dehydration work can be improved.

[0082] Because the output power of the driving oil cylinder 2 is large, the fixing mode of the driving oil cylinder 2 and the dehydration cylinder 3 is special, and must be firm and reliable. The fixing mechanism 5 in the embodiment is two semicircular fixing blocks 51, the lower semicircular fixing block 51 is welded on the oil cylinder fixing seat 4, and the oil cylinder fixing seat 4 is fixed on the I-beam frame 1 through the fixing seat bolt. During installation, the driving oil cylinder 2 and the two dehydration cylinders 3 are respectively placed in the corresponding lower semicircular fixing block 51, after adjusting the relative position and center position of the three cylinder bodies, the other semicircular fixing block 51 is closed, the upper semicircular fixing block 51 is installed and fastened by bolts, and finally the wedge-shaped pin is installed. In the embodiment, the annular fixing belt 52 is arranged on the outer periphery of the dehydration cylinder body 31 and the cylinder body of the driving oil cylinder 2.

[0083] The driving oil cylinder 2 is a bidirectional hydraulic cylinder, and the driving oil cylinder 2 reciprocates, which can realize the effect that one driving oil cylinder 2 drives two dehydration cylinders 3. After starting the driving oil cylinder 2, the coal slurry is introduced into the fluid inlet 312 of the two dehydration cylinders 3, specifically: the left dehydration cylinder 3 inhales the coal slurry, and the right dehydration cylinder 3 is in a dehydration state; the right dehydration cylinder 3 inhales the coal slurry, and the left dehydration cylinder 3 is in a dehydration state. Such reciprocation can ensure the continuous operation of the dehydration work.

[0084] The end cover 32 of the dehydration cylinder 3 has the following functions: 1. supporting the balance of the dehydration cylinder piston rod 33; 2. guiding the dehydration cylinder piston rod 33; 3. blocking the sewage column splashed from the water-permeable piston 34 during dehydration; and 4. collecting and discharging the sewage from the dehydration cylinder body 31 through the water outlet of the end cover 32.

[0085] The water-permeable piston 34 of the dehydration cylinder 3 has the following functions: 1. being driven by the dehydration cylinder piston rod 33 to extrude the coal slurry in the dehydration cylinder body 31; 2. making the sewage in the coal slurry pass through the water-permeable piston 34 device during the extrusion process, thereby realizing the separation of the sewage and the coal slurry; 3. pushing the separated coal slurry out of the dehydration cylinder body 31; and 4. being driven by the reverse movement of the dehydration cylinder piston rod 33 to form a negative pressure in the dehydration cylinder body 31, and absorbing the coal slurry from the coal slurry storage pool 7 into the dehydration cylinder body 31.

[0086] The water-permeable baffle 37 has the following functions: firstly, it prevents the coal slurry from overflowing the dehydration cylinder body 31 during the extrusion of the coal slurry in the dehydration cylinder 3; secondly, it separates the sewage in the coal slurry during the extrusion; thirdly, when the pressure of the hydraulic system driving the oil cylinder 2 reaches the rated value, the water-permeable baffle 37 is driven by the rotating oil cylinder 392 to instantaneously separate from the gap between the first annular clamping plate 35 and the second annular clamping plate 36, so that the coal slurry is pushed out of the dehydration cylinder body 31 during the operation of the water-permeable piston 34; and fourthly, the dehydration cylinder 3 forms a negative pressure under the driving of the reverse movement of the dehydration cylinder piston rod 33, so that the coal slurry is sucked into the dehydration cylinder body 31. In this embodiment, the distance between the first annular clamping plate 35 and the second annular clamping plate 36 can be adjusted by adjusting the bolts 314. Meanwhile, the first annular clamping plate 35 and the second annular clamping plate 36 are both provided with bolt holes on only one half of the circumference, and the other half of the circumference is not provided with bolt holes, so that a rotating channel is provided for the rotation of the water-permeable baffle 37, and the smooth rotation of the water-permeable baffle 37 is ensured.

[0087] In this embodiment, the extension and retraction of the piston rod of the rotating oil cylinder 392 drives the baffle driving connecting rod 393 to rotate, drives the rotating shaft 394 to rotate, further drives the baffle handle 391 to rotate, and finally drives the water-permeable baffle 37 to rotate.

[0088] The arched clamping plate support frame 38 can provide support for the transparent water baffle 313. Meanwhile, the water sprayed by the water-permeable baffle 37 during the dehydration process can be blocked by the clamping plate support frame 38 and the transparent water baffle 313 and then fall into the 4# water guide groove 67 below.

[0089] In this embodiment, the separated water discharged from the end cover water outlet 310 is collected by the 1# water guide groove 61, then enters the 2# water guide groove 63 through the 1# water guide pipe 62, and then flows into the 3# water guide groove 65 through the 4# water guide groove 67, the 3# water guide pipe 66, the 2# water guide pipe 64 and the 2# water guide groove 63. When the coal slurry produced after dehydration is pushed out of the dehydration cylinder body 31, it falls to the end of the 4# water guide groove 67 far from the dehydration cylinder 3, and under the action of the gravity of the coal slurry, the weight 610 is lifted, the balance of the 4# water guide groove 67 is broken, the fixed pulley 69 rotates, drives the 4# water guide groove 67 to incline downward away from the dehydration cylinder 3, and then makes the coal slurry slide to the transportation system. After that, the 4# water guide groove 67 returns to the original position under the action of the weight 610.

[0090] In the embodiment, the whole rack is welded by I-beams, and when installing, the upper plane of the I-beam rack 1 fixed equipment is ensured to be in a unified horizontal plane. The design and application of the I-beam rack 1 can realize quick installation and centering of parts, and also can realize hoisting and relocation of the whole machine of the embodiment.

[0091] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A coal slurry dewatering device, characterized in that, The machine includes an I-beam frame, on which a drive cylinder and two dehydration cylinders are mounted; three cylinder mounting seats are fixed to the I-beam frame by bolts; the cylinder bodies of the drive cylinder and the dehydration cylinders are both fixedly connected to the cylinder mounting seats by a fixing mechanism. The drive cylinder is a bidirectional hydraulic cylinder, and the two horizontally arranged piston rods of the drive cylinder are respectively connected to the piston rods of the two dehydration cylinders through connecting pins. A water guide trough #1 is provided directly below the water outlet of the end cap of the dehydration cylinder, and a water guide trough #4 is provided directly below the clamp support frame of the dehydration cylinder. The dehydration cylinder includes a cylinder body, an end cap, a piston rod, a permeable piston, a first annular clamping plate, a second annular clamping plate, a permeable baffle, a clamping plate support frame, and a baffle rotation mechanism. The dehydration cylinder body is a horizontally arranged cylindrical structure with open ends. An end cap is provided at one end of the dehydration cylinder body, and the end cap is fixed to the dehydration cylinder body by a spring pin. An outlet is provided at the bottom of the end cap, which connects the inside and outside of the dehydration cylinder body, and a central hole is provided at the center of the end cap. The water-permeable piston is movably disposed inside the dehydration cylinder. The water-permeable piston is arranged parallel to the end cap, and the outer diameter of the shell of the water-permeable piston is smaller than the inner diameter of the dehydration cylinder. A through hole is provided at the center of the permeable piston; one end of the dehydration cylinder piston rod passes through the through hole, and a limiting ring is provided on the dehydration cylinder piston rod on both sides of the permeable piston. The limiting ring is fixed to the dehydration cylinder piston rod by a spring pin. The first annular clamping plate is fixedly provided at the other end of the dehydration cylinder body, and the second annular clamping plate is provided on the side of the first annular clamping plate away from the dehydration cylinder body. The first annular clamping plate and the second annular clamping plate are coaxially arranged. Bolt holes are provided on half the circumference of the first annular clamping plate and the second annular clamping plate. The first annular clamping plate and the second annular clamping plate are fixed by adjusting bolts. An arched clamping plate support frame is welded to one side of the second annular clamping plate away from the first annular clamping plate, and the bottom end of the clamping plate support frame is fixedly connected to the I-beam frame. The permeable baffle is also provided in the gap between the first annular clamp and the second annular clamp. One end of the baffle handle is fixedly connected to the permeable baffle, and the other end of the baffle handle is fixedly connected to the rotating shaft of the baffle rotating mechanism located outside the dehydration cylinder body. A fluid inlet is provided at the top of the dehydration cylinder body near the first annular clamp; The baffle rotation mechanism includes a rotary cylinder, a baffle drive linkage, a rotary shaft, and a rotary shaft seat; The cylinder body of the rotary cylinder is rotatably connected to the I-beam frame, the bottom end of the rotary shaft seat is fixedly connected to the I-beam frame, and the rotary shaft is rotatably mounted on the top end of the rotary shaft seat. The piston rod of the rotary cylinder is rotatably connected to one end of the baffle drive link, and the other end of the baffle drive link is fixedly connected to the rotating shaft. The permeable piston includes an annular shell that is hollow inside and has a through hole in the center. One side of the shell is open, and a filter baffle is provided inside the shell on the open side. The filter baffle is fixed to the shell by a spring pin. A filter device is also provided inside the shell inside the filter baffle. The shape and size of the filter baffle and the filter device are matched with the shape and size of the shell. Several permeable holes are provided on one side of the shell away from the filter baffle and on the filter baffle. The through hole in the center of the permeable piston shell is used to install the piston rod of the dehydration cylinder. The water guiding mechanism includes a water guiding channel #1, a water guiding pipe #1, a water guiding channel #2, a water guiding pipe #2, a water guiding channel #3, a water guiding pipe #3, a water guiding channel #4, a water guiding channel #4, a fixed pulley, a weight, and a steel wire rope. The bottom end of the No. 1 water guide channel is connected to the No. 2 water guide channel through the No. 1 water guide pipe, and a water guide channel outlet is provided at the bottom end of the No. 2 water guide channel. The fixed pulley is provided on the I-beam frame. The bottom of the No. 4 water guide channel near the dehydration cylinder is fixedly connected to the fixed pulley. A weight is suspended by a steel wire rope on the side of the fixed pulley near the dehydration cylinder. The 3rd water guide trough is located directly below the end of the 4th water guide trough near the dehydration cylinder. The outlet of the 3rd water guide trough is connected to the 3rd water guide pipe through the 4th water guide pipe. The 3rd water guide pipe is connected to the 2nd water guide trough through the 2nd water guide pipe.

2. The coal slurry dewatering device according to claim 1, characterized in that, The permeable baffle includes an annular shell that is hollow inside and solid in the center. One side of the shell is open, and a filter baffle is provided inside the shell on the open side. The filter baffle is fixed to the shell by a spring pin. A filter device is also provided inside the shell inside the filter baffle. The shape and size of the filter baffle and the filter device are matched with the shape and size of the shell. Several permeable holes are provided on one side of the shell away from the filter baffle and on the filter baffle.

3. A coal slurry dewatering device according to claim 1 or 2, characterized in that, The filtration device includes two layers of stainless steel filter screens, with filter cotton placed between the two layers of stainless steel filter screens; the shape and size of the stainless steel filter screens and the filter cotton are matched with the shape and size of the inside of the housing.

4. The coal slurry dewatering device according to claim 1, characterized in that, A transparent water baffle is provided at one end of the clamp support frame away from the second annular clamp, and the transparent water baffle is fixed to the clamp support frame by screws.

5. The coal slurry dewatering device according to claim 1, characterized in that, The fixing mechanism includes two semi-circular fixing blocks, which are fixed relative to each other by bolts. The bottom end of the lower semi-circular fixing block is welded to the cylinder fixing seat. Annular fixing bands are respectively provided on the outer periphery of the dehydration cylinder body and the drive cylinder body at both ends of the two semi-circular fixing blocks.

6. The coal slurry dewatering device according to claim 1, characterized in that, It also includes a coal slurry water storage tank, the bottom plate of which is sloping along its length; a coal slurry dredging port is provided at the bottom end of the side wall of the coal slurry water storage tank corresponding to the bottom of the slope of the bottom plate of the coal slurry water storage tank, and a dredging cover plate is fixed to the coal slurry dredging port by bolts; a coal slurry water outlet is provided on the dredging cover plate, and a water outlet steel pipe is welded to the outside of the coal slurry water outlet, and a quick connector is provided at the other end of the water outlet steel pipe, the quick connector being connected to the fluid inlet of the dewatering cylinder through a water outlet hose.

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