Crushing and discharging device for settling tank

Abstract

The utility model relates to the technical field of coal chemical industry and chemical fertilizers, in particular to a crushing and discharging device for a settling tank, which comprises a conical bottom shell connected to the bottom of the settling tank through a flange, and is characterized in that a scale breaking wheel is rotatably connected in the conical bottom shell, and a conical bottom shell bottom plate is fixedly mounted at the bottom end of the conical bottom shell; a cylindrical mesh sieve is fixedly mounted at the inner end of the conical bottom shell, and is positioned at the outer end of the scale breaking wheel; a wear-resistant lining plate is arranged at the lower end of the scale breaking wheel and is fixed on the inner wall of the lower end of the mesh sieve; the device is simple in structure, reasonable in design and easy to manufacture, the problem that the cone bottom of the settling tank and an underflow pump are blocked is solved, abrasion of large scale pieces to an impeller of the underflow pump is reduced, fine slag slurry and the scale pieces are divided, and when the scale pieces are few or no, the underflow pump can be used for cleaning the bottom of the settling tank, so that the service life of the underflow pump is prolonged, and the service life of the underflow pump is prolonged. The scale breaking wheel can rotate slowly or stop, the flow of the underflow pump is not affected, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical fields of coal chemical industry and chemical fertilizer, and particularly relates to a crushing and discharging device for a settling tank. Background Art

[0002] As an important large-scale device in the gasification slag water treatment unit, the main function of the settling tank is to separate fine slag in the black water. The clarified ash water is recycled, and the sludge slurry precipitated to the bottom of the tank cone is transported to the pressure filtration unit for treatment by a bottom flow pump.

[0003] In the prior art, the bottom of the settling tank cone and the bottom flow pump are often blocked by the black water and the scale flakes falling from the wall of the settling tank. The sludge slurry cannot be discharged, and the abnormal operation of the settling tank directly leads to the reduction or even shutdown of the gasifier. Therefore, the utility model provides a crushing and discharging device for a settling tank to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a crushing and discharging device for a settling tank to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A crushing and discharging device for a settling tank, comprising: a cone bottom shell, which is connected to the bottom of the settling tank through a flange. A descaling wheel is rotatably connected inside the cone bottom shell. A bottom plate of the cone bottom shell is fixedly installed at the bottom end of the cone bottom shell. A hole sieve is fixedly installed at the inner end of the cone bottom shell. The hole sieve is cylindrical and located at the outer end of the descaling wheel.

[0006] A wear-resistant lining is arranged at the lower end of the descaling wheel, and the wear-resistant lining is fixed on the inner wall at the lower end of the hole sieve.

[0007] A flushing water pipe is fixedly installed at the lower end of the bottom plate of the cone bottom shell. A flushing valve is installed on the side wall of the flushing water pipe. Feed pipes are fixedly installed on both the left and right sides at the lower end of the bottom plate of the cone bottom shell. A bottom pipe is fixedly installed between the lower ends of the two feed pipes. An outlet pipe is fixedly installed in the middle of the bottom pipe.

[0008] Preferably, a hydraulic motor is fixedly installed at the lower end of the bottom plate of the cone bottom shell through a mounting plate, and the output end of the hydraulic motor is fixedly installed with a main shaft through a coupling.

[0009] Preferably, the upper end of the main shaft passes through the side wall of the bottom plate of the cone bottom shell and is fixedly connected with the descaling wheel, and the main shaft is connected with the bottom plate of the cone bottom shell through a sealed bearing.

[0010] Preferably, the wear-resistant lining is rotatably connected with the outer wall of the main shaft through a bearing.

[0011] Preferably, a guide plate is fixedly installed on the inner side of the upper end of the cone bottom shell, and the guide plate is funnel-shaped.

[0012] Preferably, feed valves one and two are respectively installed at the upper ends of the two feed pipes, and drain valves one and two are respectively and fixedly installed at the lower ends.

[0013] Preferably, a bottom flow pump one and a bottom flow pump two are respectively installed at the left and right ends of the bottom pipe.

[0014] Preferably, a discharge valve one and a discharge valve two are respectively installed at the left and right ends of the bottom pipe.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The present utility model has a simple structure, reasonable design, and is easy to manufacture. It solves the problems of blockage of the conical bottom of the settling tank and the bottom flow pump, reduces the wear of the impeller of the bottom flow pump by large scale pieces, separates the fine slag slurry from the scale pieces. When there are fewer or no scale pieces, the scale breaking wheel can rotate slowly or stop, without affecting the flow rate of the bottom flow pump, and saves energy. Description of the Drawings

[0017] Figure 1 is a front view of the overall structure of the present utility model;

[0018] Figure 2 is a top view of the scale breaking wheel of the present utility model.

[0019] In the figure: 1, conical bottom shell; 2, deflector; 3, hole sieve; 4, scale breaking wheel; 5, sealed bearing; 6, hydraulic motor; 7, feed valve one; 8, bottom flow pump one; 9, main shaft; 10, bottom flow pump two; 11, drain valve one; 12, drain valve two; 13, discharge valve one; 14, discharge valve two; 15, discharge pipe; 16, feed valve two; 17, flushing valve; 18, flushing water pipe; 19, wear-resistant lining; 20, discharge cavity; 21, bottom plate of conical bottom shell. Detailed Embodiment

[0020] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make the advantages more clearly understood, the following further details the embodiments of the present utility model with reference to the drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 2, the present utility model provides a technical solution: a crushing and discharging device for a settling tank, which includes a conical bottom shell 1 flange-connected to the bottom of the settling tank, a main shaft 9 arranged in the conical bottom shell 1, and a matching scale-breaking wheel 4 and a cylindrical hole sieve 3. The hole sieve 3 is a section of cylinder, fixed on the bottom plate 21 of the conical bottom shell, and its cylinder wall is covered with circular pores. To protect the bottom plate 21 of the conical bottom shell from being worn by scale pieces, a wear-resistant lining plate 19 is arranged between the scale-breaking wheel 4 and the bottom plate 21 of the conical bottom shell. The wear-resistant lining plate 19 is fixed on the inner wall of the hole sieve 3. The scale-breaking wheel 4 is fixed on the main shaft 9. A sealing bearing 5 is arranged at the joint of the main shaft 9 and the bottom plate 21 of the conical bottom shell. There is a cavity between the wear-resistant lining plate 19 and the bottom plate 21 of the conical bottom shell. The lower part of the cavity is the sealing bearing 5. The cavity is connected to a flushing water pipe 18. The flushing water pipe 18 is connected to an external water source. A flushing valve 17 is arranged on the flushing water pipe 18. The flushing water is clean water. The cavity is filled with clean water to prevent slag slurry from entering and damaging the sealing bearing 5 and extend the service life of the sealing bearing 5.

[0022] The lower part of the main shaft 9 is connected to a hydraulic motor 6. The hydraulic motor 6 drives the main shaft 9 and the scale-breaking wheel 4 to rotate. A deflector 2 is arranged on the upper part of the conical bottom shell 1. The deflector 2 is funnel-shaped, and its bottom diameter is about 30 cm smaller than the diameter of the hole sieve 3. The deflector 2 cooperates with the hole sieve 3 to separate the fine slag slurry and scale pieces. The sludge slurry at the bottom of the settling tank enters the hole sieve 3 through the deflector 2 arranged on the upper part of the conical bottom shell 1.

[0023] Feeding pipes are fixedly installed on the left and right sides at the lower end of the bottom plate 21 of the conical bottom shell. A bottom pipe is fixedly installed between the lower ends of the two feeding pipes. An outlet pipe 15 is fixedly installed in the middle of the bottom pipe. One end of the outlet pipe 15 is connected to an external filter press unit.

[0024] Part of the fine slag slurry enters the discharge cavity 20 through the round holes of the hole sieve 3, and part overflows from the hole sieve 3 to the discharge cavity 20, and enters the bottom flow pump one 8 and the bottom flow pump two 10 through the feeding valve one 7 and the feeding valve two 16. The scale pieces at the bottom of the settling tank fall onto the scale-breaking wheel 4 in the hole sieve 3 along the deflector 2 under the action of gravity. The scale-breaking wheel 4 is conical to prevent scale pieces from piling up and bridging. The scale pieces are crushed under the friction and extrusion of the rotating scale-breaking wheel 4 and the hole sieve 3.

[0025] The crushed fine slag enters the discharge cavity 20 through the pores of the hole sieve 3, and together with the fine slag slurry coming from the upper part, enters the bottom flow pump one 8 and the bottom flow pump two 10 through the feeding valve one 7 and the feeding valve two 16, and is transported to the filter press unit by the bottom flow pump one 8 and the bottom flow pump two 10 through the discharge valve one 13, the discharge valve two 14, and the outlet pipe 15. A drain valve one 11 and a drain valve two 12 are arranged in front of the bottom flow pump one 8 and the bottom flow pump two 10, which are used to drain the materials in the pump and pipeline when the bottom flow pump is out of use or under maintenance. Further, the scale-breaking wheel 4, the wear-resistant lining plate 19, and the hole sieve 3 are made of hard wear-resistant alloy materials.

[0026] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A crushing and discharging device for a settling tank, comprising: Conical bottom shell (1), the conical bottom shell (1) is connected to the bottom of the settling tank through a flange, and is characterized in that: a scale-breaking wheel (4) is rotatably connected inside the conical bottom shell (1), a conical bottom shell bottom plate (21) is fixedly installed at the bottom end of the conical bottom shell (1), a hole sieve (3) is fixedly installed at the inner end of the conical bottom shell (1), the hole sieve (3) is in a cylindrical shape and is located at the outer end of the scale-breaking wheel (4); A wear-resistant lining plate (19) is arranged at the lower end of the scale-breaking wheel (4), and the wear-resistant lining plate (19) is fixed on the inner wall of the lower end of the hole sieve (3); A flushing water pipe (18) is fixedly installed at the lower end of the conical bottom shell bottom plate (21), a flushing valve (17) is installed on the side wall of the flushing water pipe (18), feeding pipes are fixedly installed on both the left and right sides at the lower end of the conical bottom shell bottom plate (21), a bottom pipe is fixedly installed between the lower ends of the two feeding pipes, and a discharge pipe (15) is fixedly installed in the middle of the bottom pipe.

2. The crushing and discharging device for a settling tank according to claim 1, wherein: The lower end of the conical bottom shell bottom plate (21) is fixedly installed with a hydraulic motor (6) through a mounting plate, and the output end of the hydraulic motor (6) is fixedly installed with a main shaft (9) through a coupling.

3. The crushing and discharging device for a settling tank according to claim 2, wherein: The upper end of the main shaft (9) passes through the side wall of the conical bottom shell bottom plate (21) and is fixedly connected to the scale-breaking wheel (4), and the main shaft (9) is connected to the conical bottom shell bottom plate (21) through a sealed bearing.

4. A crushing and discharging device for a settling tank according to claim 1, wherein: The wear-resistant lining plate (19) is rotatably connected to the outer wall of the main shaft (9) through a bearing.

5. The crushing and discharging device for a settling tank according to claim 1, characterized in that: A deflector (2) is fixedly installed on the inner side of the upper end of the conical bottom shell (1), and the deflector (2) is in a funnel shape.

6. The crushing and discharging device for a settling tank according to claim 1, wherein: Feeding valves one (1) and feeding valves two (16) are respectively installed at the upper ends of the two feeding pipes (7), and drain valves one (11) and drain valves two (12) are respectively fixedly installed at the lower ends.

7. The crushing and discharging device for a settling tank according to claim 1, characterized in that: A bottom flow pump one (8) and a bottom flow pump two (10) are respectively installed at the left and right ends of the bottom pipe.

8. A crushing and discharging device for a settling tank according to claim 1, characterized in that: Discharge valves one (13) and discharge valves two (14) are respectively installed at the left and right ends of the bottom pipe.

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