Coal slime water pretreatment device

Abstract

The invention discloses a slime water pretreatment device, and belongs to the technical field of slime water pretreatment, the slime water pretreatment device comprises a sludge discharging assembly, a sludge blocking device and a water tank assembly, the sludge discharging assembly comprises a sludge collecting paddle with circular array arc-shaped paddles, a trigger device capable of automatically controlling a valve according to the amount of coal slime and a driving motor, and the sludge blocking device is provided with a sludge blocking inclined plate to realize secondary recovery of leaked sludge. The water tank assembly is of an inclined structure with a high water inlet end and a low water outlet end, a water baffle is arranged at the settling tank to slow down the flow speed, and during working, slime water flows in from the water inlet end and is slowed down through the inclined water tank and the water baffle, the slime is settled in the settling tank, and leaked slime flows back through the inclined mud baffle; the driving motor drives the mud gathering paddle to gather the coal slime and guide the coal slime into the mud discharging pipe, when the amount of the coal slime reaches the standard, the gravity pulls the mud discharging valve to be opened to discharge mud, when the amount is insufficient, the floating valve drives the mud discharging valve to be closed, discharging of thin coal slime water is avoided, and the efficient pretreatment device is provided for solving the problems that an existing device is low in coal slime sedimentation efficiency, large in loss and high in downstream energy consumption.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of coal slime water pretreatment, and particularly relates to a coal slime water pretreatment device. BACKGROUND

[0002] In coal washing and processing, coal slime water pretreatment is a key link between washing and dehydration processes, and the core is to realize efficient sedimentation, gathering and low water content discharge of coal slime particles, which is directly related to coal resource recovery efficiency and environmental protection compliance. SUMMARY

[0003] In view of the above problems, the present application provides a coal slime water pretreatment device to effectively solve the above problems.

[0004] The technical scheme adopted by the present application is as follows: the present application provides a coal slime water pretreatment device, which comprises a coal slime discharge assembly, a coal slime blocking device and a water tank assembly, the coal slime blocking device is arranged in the water tank assembly, and the coal slime discharge assembly is arranged at the bottom of the water tank assembly.

[0005] Further, the circular array of the coal slime gathering paddle is provided with arc-shaped paddles, the arc-shaped paddles are provided with coal slime inlet holes therebetween, the top of the arc-shaped paddles is provided with a float valve ring, the bottom of the coal slime gathering paddle is provided with a coal slime discharge pipe, the outer wall of the coal slime discharge pipe is provided with a gear fixing wall, the bottom of the side wall of the coal slime discharge pipe is provided with a coal slime discharge groove, the mud slurry gear is arranged on the gear fixing wall, and the mud slurry gear is meshed and connected with the motor gear.

[0006] As a preferred, the coal slime gathering paddle adopts arc-shaped paddles in a circular array, which is driven by the driving motor to rotate the mud slurry gear, and the arc-shaped paddles can actively gather the dispersed coal slime in the sedimentation tank to the center when rotating, so as to avoid the accumulation of coal slime at the bottom of the tank, the coal slime inlet holes between the arc-shaped paddles can directly guide the gathered coal slime into the coal slime discharge pipe, and the bottom of the coal slime discharge pipe is accurately connected with the coal slime discharge pipe, so as to form a directional path for coal slime gathering, guiding and discharging, and reduce the risk of blockage.

[0007] Further, the trigger device comprises a float valve, a float valve spring and a coal slime discharge valve, the float valve is arranged above the float valve ring, the float valve spring is arranged between the float valve and the float valve ring, and the coal slime discharge valve is arranged at the bottom of the float valve and located in the coal slime discharge pipe.

[0008] Furthermore, the bottom of the float valve is provided with a bottom rod, the bottom of the bottom rod is provided with a bottom plate, the bottom center of the mud discharge valve is provided with a lifting hole, the bottom rod is located in the lifting hole, and the side wall of the mud discharge valve is provided with an inclined plate.

[0009] Furthermore, the mud-blocking device is provided with an outlet, an inlet, and a mud-blocking inclined plate. The outlet 21 and the inlet 22 are respectively located at both ends of the mud-blocking device 2. The height of the outlet is lower than the top plate of the mud-blocking device. The mud-blocking inclined plate is located below the outlet. The side wall of the inlet is symmetrically provided with grooves.

[0010] Preferably, initially, the float valve floats upwards due to its low density and is fixed above the float valve ring by the float valve spring. At the same time, it lifts the sludge discharge valve to block the sludge discharge channel, preventing clear water or thin coal sludge from entering the sludge discharge pipe. As coal sludge gradually accumulates in the sludge discharge pipe, the gravity of the coal sludge pulls the sludge discharge valve down until the side wall of the sludge discharge valve is connected to the sludge discharge channel. At this time, the discharged sludge is sludge with sufficient coal sludge and low moisture content, reducing the process cost of downstream coal sludge dewatering treatment.

[0011] Furthermore, the water tank has an inlet end at one end and an outlet end at the other end, with the bottom of the inlet end being higher than the bottom of the outlet end, and a settling tank is provided between the inlet end and the outlet end.

[0012] Furthermore, the top sidewall of the settling tank is provided with a buckle plate and a water baffle groove. The water baffle groove is located at the center of the top of the settling tank, the buckle plate is located on the sidewall of the water baffle groove, and the buckle groove is provided on the buckle plate.

[0013] Preferably, the water tank assembly adopts an inclined structure in which the bottom of the inlet end is higher than the outlet end, and a baffle plate is set at the settling tank. The baffle plate changes the flow direction of the coal slurry water. The inclined structure makes the outlet end cross section larger and the flow rate slower, providing sufficient settling time for the coal slurry particles and avoiding the loss of coal slurry with water due to excessive flow rate.

[0014] Furthermore, the mud-blocking device is located inside the water outlet, the water inlet is located on the upper side of the settling tank, and the mud-gathering slurry is located at the bottom of the settling tank.

[0015] Furthermore, the water tank also includes a sludge discharge pipe and a baffle plate. The baffle plate is located in the baffle plate groove, the sludge discharge pipe is located below the settling tank, the sludge discharge pipe is located on the sludge discharge pipe, and the sludge discharge trough is located inside the sludge discharge pipe.

[0016] Preferably, the outlet of the mud-blocking device faces upward and the design of the mud-blocking inclined plate can intercept a small amount of mud flowing towards the outlet. The denser coal mud will naturally settle to the mud-blocking inclined plate and slide back to the settling tank along the inclined plate, realizing the secondary recycling of coal mud and further improving the coal mud recovery rate.

[0017] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The mud-gathering slurry uses a circular array of arc-shaped blades, which, together with the drive motor, rotate the mud gear. When the arc-shaped blades rotate, they can actively gather the dispersed coal mud in the settling tank towards the center, preventing the coal mud from accumulating and clumping at the bottom of the tank. The mud inlet holes between the arc-shaped blades can directly guide the gathered coal mud into the mud discharge pipe, and the bottom of the mud discharge pipe is precisely connected to the mud outlet pipe, forming a directional path for coal mud gathering, guiding, and discharging, reducing the risk of blockage.

[0018] 2. Initially, the float valve floats due to its low density and is fixed above the float valve ring by the float valve spring. At the same time, it lifts the sludge discharge valve to block the sludge discharge channel, preventing clean water or thin coal sludge from entering the sludge discharge pipe. As coal sludge gradually accumulates in the sludge discharge pipe, the gravity of the coal sludge pulls the sludge discharge valve down until the side wall of the sludge discharge valve is connected to the sludge discharge channel. At this time, the discharged sludge is sludge with sufficient coal sludge and low moisture content, reducing the process cost of downstream coal sludge dewatering treatment.

[0019] 3. The water tank assembly adopts an inclined structure with the bottom of the inlet end higher than the outlet end, and a baffle plate is installed at the settling tank. The baffle plate changes the flow direction of the coal slurry water. The inclined structure makes the outlet end cross section larger and the flow rate slower, providing sufficient settling time for the coal slurry particles and avoiding the loss of coal slurry with water due to excessive flow rate.

[0020] 4. The upward-facing outlet of the mud-blocking device and the design of the mud-blocking inclined plate can intercept a small amount of mud flowing towards the outlet. The denser coal mud will naturally settle to the mud-blocking inclined plate and slide back to the settling tank along the inclined plate, realizing the secondary recycling of coal mud and further improving the coal mud recovery rate. Attached Figure Description

[0021] Figure 1 This is a perspective view of a coal slurry water pretreatment device proposed in this invention; Figure 2 This is a top view of a coal slurry water pretreatment device proposed in this invention; Figure 3 for Figure 2 A cross-sectional view along the cutting line AA; Figure 4 for Figure 2 A cross-sectional view along the cutting line BB; Figure 5 This is a schematic diagram of the structure of the mud-collecting slurry of a coal slurry water pretreatment device proposed in this invention; Figure 6 This is a schematic diagram of the sludge discharge valve of a coal slurry water pretreatment device proposed in this invention; Figure 7 This is a schematic diagram of the mud-blocking device of a coal slurry water pretreatment device proposed in this invention; Figure 8 for Figure 3 A magnified view of a section at point I.

[0022] Among them, 1. Sludge discharge assembly, 11. Sludge slurry, 111. Arc-shaped blade, 112. Sludge inlet hole, 113. Float valve ring, 114. Sludge discharge pipe, 115. Gear fixing wall, 116. Sludge discharge trough, 12. Triggering device, 121. Float valve, 1211. Bottom rod, 1212. Bottom plate, 122. Float valve spring, 123. Sludge discharge valve, 1231. Lifting hole, 1232. Inclined plate, 13. Sludge gear, 14. Drive motor, 141. Motor gear, 2. Sludge blocking device, 21. Water outlet, 22. Water inlet, 23. Sludge blocking inclined plate, 24. Clip groove, 3. Water tank, 31. Water inlet end, 32. Water outlet end, 33. Settling tank, 331. Clip plate, 332. Water baffle groove, 34. Sludge discharge pipe, 35. Water baffle.

[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0026] like Figures 1-8 As shown, the present invention proposes a coal slurry water pretreatment device, including a slurry discharge component 1, a slurry blocking device 2, and a water tank component 3. The slurry blocking device 2 is located inside the water tank component 3, and the slurry discharge component 1 is located at the bottom of the water tank component 3. The slurry discharge component 1 includes a slurry slurry 11, a triggering device 12, a slurry gear 13, and a drive motor 14. The slurry slurry 11 is located at the bottom of the water tank component 3, the triggering device 12 is located at the center of the slurry slurry 11, the slurry gear 13 is located at the bottom of the slurry slurry 11, and the drive motor 14 is located at the bottom outside of the water tank component 3. The top of the drive motor 14 is provided with a motor gear 141.

[0027] The mud-gathering slurry 11 is arranged in a circular array with arc-shaped blades 111. Mud inlet holes 112 are provided between the arc-shaped blades 111. A float valve ring 113 is provided at the top of the arc-shaped blades 111. A mud discharge pipe 114 is provided at the bottom of the mud-gathering slurry 111. A gear fixing wall 115 is provided on the outer wall of the mud discharge pipe 114. A mud discharge groove 116 is provided at the bottom of the side wall of the mud discharge pipe 114. A mud gear 13 is provided on the gear fixing wall 115. The mud gear 13 is meshed with the motor gear 141.

[0028] The triggering device 12 includes a float valve 121, a float valve spring 122, and a mud discharge valve 123. The float valve 121 is located above the float valve ring 113, the float valve spring 122 is located between the float valve 121 and the float valve ring 113, and the mud discharge valve 123 is located at the bottom of the float valve 121 and inside the mud discharge pipe 114.

[0029] The bottom of the float valve 121 is provided with a bottom rod 1211, and the bottom of the bottom rod 1211 is provided with a bottom plate 1212. The bottom of the center of the mud discharge valve 123 is provided with a lifting hole 1231, the bottom rod 1211 is located in the lifting hole 1231, and the side wall of the mud discharge valve 123 is provided with an inclined plate 1232.

[0030] The mud-blocking device 2 is provided with an outlet 21, an inlet 22 and a mud-blocking inclined plate 23. The outlet 21 and the inlet 22 are respectively located at both ends of the mud-blocking device 2. The height of the outlet 21 is lower than the top plate of the mud-blocking device 2. The mud-blocking inclined plate 23 is located below the outlet 21. The side wall of the inlet 22 is symmetrically provided with a retaining groove 24.

[0031] The water tank 3 has an inlet end 31 at one end and an outlet end 32 at the other end. The bottom of the inlet end 31 is higher than the bottom of the outlet end 32. A settling tank 33 is provided between the inlet end 31 and the outlet end 32.

[0032] The top sidewall of the settling tank 33 is provided with a buckle plate 331 and a water baffle groove 332. The water baffle groove 332 is located at the top center of the settling tank 33, the buckle plate 331 is located on the sidewall of the water baffle groove 332, and the buckle groove 24 is provided on the buckle plate 331.

[0033] The mud-blocking device 2 is located inside the water outlet 32, the water inlet 22 is located on the upper side of the settling tank 33, and the mud-collecting slurry 11 is located at the bottom of the settling tank 33.

[0034] The water tank 3 also includes a mud discharge pipe 34 and a baffle plate 35. The baffle plate 35 is located in the baffle plate groove 332. The mud discharge pipe 34 is located below the settling tank 33 and is located on the mud discharge pipe 114. The mud discharge trough 116 is located inside the mud discharge pipe 34.

[0035] In practical use, the coal slurry water flows from the inlet end 31 to the outlet end 32. When the coal slurry water flows to the middle settling tank 33, the direction of the water flow changes because of the baffle plate 35 above the settling tank 33. Also, because the height of the inlet end 31 is greater than that of the outlet end 32, and the cross-section of the outlet end 32 is greater than that of the inlet end 31, the water flow velocity at the outlet end 32 is slower. When the coal slurry in the coal slurry water passes the baffle plate 35, it will settle into the settling tank 33. A small amount of coal slurry flows into the mud-blocking device 2. Due to the upward design of the outlet 21, the denser coal slurry settles onto the mud-blocking inclined plate 23 and slides into the settling tank 33 along the mud-blocking inclined plate 23.

[0036] The motor gear 141 of the drive motor 14 drives the mud gear 13 to rotate, which in turn drives the mud-gathering slurry 11 to rotate. During the rotation of the mud-gathering slurry 11, the arc-shaped blades 111 gather the coal slurry that has settled into the settling tank 33 towards the center. The coal slurry enters the mud discharge pipe 114 through the mud inlet hole 112.

[0037] Initially, the float valve 121 has a low density and will float in the coal slurry water. Under the pull of the float valve spring 122, the float valve 121 is fixed above the float valve ring 113, and the bottom of the float valve 121 supports the sludge discharge valve 123, so that the sludge discharge valve 123 is always above the sludge discharge trough 116. As the coal slurry in the sludge discharge pipe 114 gradually accumulates, the weight of the coal slurry on the top of the sludge discharge valve 123 increases, and the sludge discharge valve 123 gradually sinks under the action of gravity, which in turn pulls the float valve 121 to sink until the side wall of the sludge discharge valve 123 is connected to the sludge discharge trough 116. Under the action of water pressure, the coal slurry is discharged from the sludge discharge trough 116 into the sludge discharge pipe 34.

[0038] When there is little coal sludge in the sludge discharge pipe 114, the coal sludge is not heavy enough. Under the buoyancy of the float valve 121, the sludge discharge valve 123 floats up, causing the sludge discharge valve 123 to disconnect from the sludge discharge trough 116, blocking the water flow from the sludge discharge pipe 114 into the sludge discharge pipe 34, so as to prevent the sludge discharged from the sludge discharge pipe 34 from having a high water content, which is not conducive to the subsequent dewatering work.

[0039] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A coal slurry water pre-treatment device, characterized by: The mud discharge assembly (1), the mud blocking device (2) and the water tank assembly (3), the mud blocking device (2) is arranged in the water tank assembly (3), the mud discharge assembly (1) is arranged at the bottom of the water tank assembly (3); The mud discharge assembly (1) includes a mud gathering paddle (11), a trigger device (12), a mud gear (13) and a drive motor (14), the mud gathering paddle (11) is arranged at the bottom of the water tank assembly (3), the trigger device (12) is arranged at the center of the mud gathering paddle (11), the mud gear (13) is arranged at the bottom of the mud gathering paddle (11), the drive motor (14) is arranged at the bottom of the outside of the water tank assembly (3), and the top of the drive motor (14) is provided with a motor gear (141).

2. The coal slurry water pre-treatment device according to claim 1, characterized in that: The mud gathering paddle (11) is circularly arranged with arc-shaped paddles (111), the arc-shaped paddles (111) are provided with mud inlet holes (112) therebetween, the top of the arc-shaped paddles (111) is provided with a float valve ring (113), the bottom of the mud gathering paddle (11) is provided with a mud discharge pipe (114), the outer wall of the mud discharge pipe (114) is provided with a gear fixing wall (115), the bottom of the side wall of the mud discharge pipe (114) is provided with a mud discharge groove (116), the mud gear (13) is arranged on the gear fixing wall (115), and the mud gear (13) is in meshing connection with the motor gear (141).

3. The coal slurry water pre-treatment device of claim 2, wherein: The trigger device (12) includes a float valve (121), a float valve spring (122) and a mud discharge valve (123), the float valve (121) is arranged above the float valve ring (113), the float valve spring (122) is arranged between the float valve (121) and the float valve ring (113), and the mud discharge valve (123) is arranged at the bottom of the float valve (121) and located in the mud discharge pipe (114).

4. The coal slurry water pre-treatment device according to claim 3, characterized in that: The bottom of the float valve (121) is provided with a bottom rod (1211), the bottom of the bottom rod (1211) is provided with a bottom plate (1212), the center bottom of the mud discharge valve (123) is provided with a lifting hole (1231), the bottom rod (1211) is arranged in the lifting hole (1231), and the side wall of the mud discharge valve (123) is provided with an inclined plate (1232).

5. A coal slurry water pre-treatment device as claimed in claim 4, wherein: The mud blocking device (2) is provided with a water outlet (21), a water inlet (22) and a mud blocking inclined plate (23), the water outlet (21) and the water inlet (22) are respectively arranged at two ends of the mud blocking device (2), the height of the water outlet (21) is lower than that of the top plate of the mud blocking device (2), the mud blocking inclined plate (23) is located below the water outlet (21), and the side wall of the water inlet (22) is symmetrically provided with a buckle groove (24).

6. A coal slurry water pre-treatment device according to claim 5, characterized in that: One end of the water tank (3) is provided with a water inlet end (31), the other end of the water tank (3) is provided with a water outlet end (32), the bottom of the water inlet end (31) is higher than that of the water outlet end (32), and a settling tank (33) is arranged between the water inlet end (31) and the water outlet end (32).

7. A coal slurry water pre-treatment device as claimed in claim 6, characterized in that: The top side wall of the settling tank (33) is provided with a buckle plate (331) and a water baffle groove (332), the water baffle groove (332) is located at the top center of the settling tank (33), the buckle plate (331) is located at the side wall of the water baffle groove (332), and the buckle groove (24) is arranged on the buckle plate (331).

8. A coal slurry water pre-treatment device according to claim 7, characterized in that: The mud blocking device (2) is arranged in the water outlet end (32), the water inlet (22) is located on the upper side of the settling tank (33), and the mud collecting paddle (11) is arranged at the bottom of the settling tank (33).

9. A coal slurry water pre-treatment device as claimed in claim 8, characterized in that: The water tank (3) further comprises a mud outlet pipe (34) and a water baffle (35), the water baffle (35) is arranged in the water baffle groove (332), the mud outlet pipe (34) is located below the settling tank (33), the mud outlet pipe (34) is arranged on the mud discharge pipe (114), and the mud discharge groove (116) is located in the mud outlet pipe (34).

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