A waste heat steam and air-cooled sludge drying machine

Abstract

A waste heat steam and air cooling sludge dryer comprises a sludge dryer body and a dry sludge collecting box. A wet sludge inlet is arranged on the top of the sludge dryer body. An upper supporting block and a lower supporting block are respectively fixed on the upper and lower inner walls of the sludge dryer body. The upper surfaces of the upper supporting block and the lower supporting block are connected with supporting springs. The upper part of the sludge dryer body is connected with an upper filter mud mesh plate on the supporting spring, and the lower part of the sludge dryer body is connected with a lower filter mud mesh plate on the supporting spring. A waste heat steam pipe is extended into the middle part of the sludge dryer body and connected with a heat dissipation pipe. The waste heat steam pipe is connected with a heat dissipation pipe in the sludge dryer body. The sludge is spread on a heat dissipation plate through the filter mud mesh plate, and the sludge is dried by the waste heat of steam. Then, the hot dry sludge is introduced into the air cooling pipe through a dispersion cone and cooled by the cold air blown in by a blower. The hot air enters the sludge dryer body and dries the sludge while taking away the evaporated water, thereby reducing energy loss and operating cost.

Description

Technical Field

[0001] The invention relates to the technical field of sludge dryers, and in particular to a waste heat steam and air-cooled sludge dryer. Background Art

[0002] At present, heat pump sludge dryers are widely used in sludge reduction. The sludge dryer is equipped with a hot air circulation system for drying sludge. According to the drying form, sludge drying is divided into direct drying and indirect drying. Direct drying uses hot drying media (such as flue gas) to directly contact the sludge, transfer heat by convection, and take away the evaporated water; indirect drying uses conduction to transfer heat from a heat medium such as steam to the sludge through a metal wall, and the evaporated water is taken away by a carrier gas such as air. However, the heat demand for drying sludge is large, the energy consumption is serious, the operating cost is high, and the utilization rate of the residual heat of the dry sludge after sludge treatment is low. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a sludge drying machine which utilizes steam waste heat and air cooling.

[0004] The technical solution adopted by the present invention is:

[0005] A waste heat steam and air cooling sludge dryer comprises a sludge dryer body and a dry sludge collecting box, a wet sludge inlet is arranged on the top of the sludge dryer body, an upper supporting block and a lower supporting block are respectively fixed on the upper and lower inner walls of the sludge dryer body, the upper surfaces of the upper supporting block and the lower supporting block are connected with supporting springs, the upper part of the sludge dryer body is connected with an upper filter mud mesh plate on the supporting spring, the lower part of the sludge dryer body is connected with a lower filter mud mesh plate on the supporting spring, a vibration motor is fixed on the upper filter mud mesh plate, the upper filter mud mesh plate and the lower filter mud mesh plate are connected to each other through a connecting plate, a waste heat steam pipe is extended into the middle part of the sludge dryer body, and the waste heat steam pipe is connected in the sludge dryer body The heat dissipation pipe is connected to a plurality of upper heat dissipation pipes upward, and the highest point of the upper heat dissipation pipe is connected to a heat dissipation plate. The heat dissipation pipe is connected to a plurality of lower heat dissipation pipes downward, and the lowest point of the lower heat dissipation pipe is connected to a heat dissipation plate. The top of the sludge dryer body is connected to an induced draft fan. The bottom of the sludge dryer body is a funnel-shaped mud outlet. An electromagnetic valve is provided at the outlet of the funnel-shaped mud outlet. A dispersion cone is provided below the electromagnetic valve in the funnel-shaped mud outlet. The lower end of the funnel-shaped mud outlet is connected to a cooling box. An air cooling pipe connected to the dispersion cone is vertically arranged in the cooling box. The bottom of the cooling box is connected to a blower. A dry sludge collecting box is arranged at the bottom of the cooling box, and the bottom end of the air cooling pipe is connected to the dry sludge collecting box.

[0006] The upper surfaces of the upper supporting block and the lower supporting block are inclined surfaces, and the supporting springs are fixed on the inclined surfaces.

[0007] The upper heat dissipation pipe and the lower heat dissipation pipe are both U-shaped pipes, and the sealed ends of the U-shaped pipes are provided with through holes connected to the heat dissipation plate.

[0008] The upper heat dissipation pipe and the lower heat dissipation pipe are connected to the heat dissipation pipe in an alternating manner up and down.

[0009] The outlet pipeline of the induced draft fan is connected with a condenser.

[0010] The dispersion cone is provided with a dispersion pipe which penetrates up and down, and the dispersion pipe is connected with the air cooling pipe.

[0011] The surface of the heat dissipation plate away from the upper heat dissipation pipe and the surface connected to the lower heat dissipation pipe are arc surfaces.

[0012] The upper filter mud mesh plate and the lower filter mud mesh plate are connected to each other through a connecting plate.

[0013] Beneficial effects of the present invention: the present invention spreads the sludge on the heat dissipation plate through the filter mud mesh plate, uses the waste heat of steam to dry the sludge, and then the hot dry sludge is introduced into the air cooling pipe through the dispersion cone, and is cooled by the cold air blown in by the blower. The hot air enters the sludge dryer body to dry the sludge and take away the evaporated moisture at the same time, making full use of the waste heat steam and the heat of the dry sludge, reducing energy loss and operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the dispersion cone structure of the present invention.

[0016] Among them: 1-sludge dryer body; 2-wet mud inlet; 3-condenser; 4-induced draft fan; 5-upper mud filter screen; 6-support spring; 7-upper support block; 8-vibration motor; 9-connecting plate; 10-waste heat steam pipe; 11-heat dissipation pipe; 12-lower heat dissipation pipe; 13-lower mud filter screen; 14-lower support block; 15-dispersion pipe; 16-funnel-shaped mud outlet; 17-solenoid valve; 18-blower; 19-dispersion cone; 20-cooling box; 21-air cooling pipe; 22-dry sludge collection box. DETAILED DESCRIPTION

[0017] A waste heat steam and air cooling sludge dryer comprises a sludge dryer body 1 and a dry sludge collecting box 22, a wet sludge inlet 2 is arranged on the top of the sludge dryer body 1, an upper support block 7 and a lower support block 14 are respectively fixed on the upper and lower inner walls of the sludge dryer body 1, the upper surfaces of the upper support block 7 and the lower support block 14 are connected with support springs 6, an upper filter mud mesh plate 5 is connected to the upper part of the sludge dryer body 1 on the support springs 6, a lower filter mud mesh plate 13 is connected to the lower part of the sludge dryer body 1 on the support springs 6, a vibration motor 8 is fixed to the upper filter mud mesh plate 5, the upper filter mud mesh plate 5 and the lower filter mud mesh plate 13 are connected to each other through a connecting plate 9, a waste heat steam pipe 10 is extended into the middle part of the sludge dryer body 1, the waste heat steam pipe 10 is connected to a heat dissipation pipe 11 in the sludge dryer body 1, and the heat dissipation pipe 11 is connected upward to a plurality of A heat dissipation pipe 23 is connected to the upper part, and the highest point of the upper heat dissipation pipe 23 is connected to a heat dissipation plate 24. The heat dissipation pipe 11 is connected to a plurality of lower heat dissipation pipes 12 downward, and the lowest point of the lower heat dissipation pipe 12 is connected to the heat dissipation plate 24. The top of the sludge dryer body 1 is connected to the induced draft fan 4, and a filter is provided in front of the air inlet of the induced draft fan 4. The bottom of the sludge dryer body 1 is a funnel-shaped mud outlet 16, and a solenoid valve 17 is provided at the outlet of the funnel-shaped mud outlet 16. A dispersion cone 19 is provided below the solenoid valve 17 in the funnel-shaped mud outlet 16. The lower end of the funnel-shaped mud outlet 16 is connected to a cooling box 20, and an air cooling pipe 21 connected to the dispersion cone 19 is vertically arranged in the cooling box 20. The bottom of the cooling box 20 is connected to a blower 18, and a dry sludge collecting box 22 is arranged at the bottom of the cooling box 20, and the bottom end of the air cooling pipe 21 is connected to the dry sludge collecting box 22.

[0018] The upper surfaces of the upper supporting block 7 and the lower supporting block 14 are inclined surfaces, and the supporting spring 6 is fixed on the inclined surfaces.

[0019] The upper heat dissipation pipe 23 and the lower heat dissipation pipe 12 are both U-shaped pipes, and the sealed ends of the U-shaped pipes are provided with through holes communicating with the heat dissipation plate 24 .

[0020] The upper heat dissipation pipe 23 and the lower heat dissipation pipe 12 are connected to the heat dissipation pipe 11 in an alternating manner up and down.

[0021] The outlet pipeline of the induced draft fan 4 is connected with a condenser 3 .

[0022] The dispersion cone 19 is provided with a dispersion pipe 15 which passes through from top to bottom, and the dispersion pipe 15 is connected to the air cooling pipe 21 .

[0023] The surface of the heat dissipation plate 24 away from the upper heat dissipation pipe 23 and the surface connected to the lower heat dissipation pipe 12 are arc-shaped surfaces.

[0024] The upper filter mud mesh plate 5 and the lower filter mud mesh plate 13 are connected to each other via a connecting plate 9 .

[0025] During use, wet sludge enters the sludge dryer body 1 from the wet sludge inlet 2, passes through the upper filter mud mesh plate 5 and is flattened to filter the screen, and falls on the heat sink 24. The heat sink 24 is connected to the heat pipe 11, and the heat pipe 11 is connected to the waste heat steam pipe 10 connected to the outside. After the wet sludge is dried, it slides down from the curved surface of the heat sink 24 and falls on the lower filter mud mesh plate 13. The dry sludge is vibrated on the lower filter mud mesh plate 13 and falls into the funnel-shaped mud outlet 16. It is introduced into the air cooling pipe 21 through the dispersion pipe 12 in the dispersion cone 19. The blower 18 blows cold air into the cooling box 20 to cool the hot dry sludge. The hot air after heat exchange enters the sludge dryer body 1, and the hot air takes away the water vapor generated when drying the sludge. After being taken away by the induced draft fan 4, the water is condensed out through the condenser 3.

[0026] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A waste heat steam and air-cooled sludge dryer, characterized in that: The invention comprises a sludge dryer body (1) and a dry sludge collecting box (22), wherein a wet sludge inlet (2) is provided at the top of the sludge dryer body (1), an upper support block (7) and a lower support block (14) are respectively fixed on the upper and lower inner walls of the sludge dryer body (1), the upper surfaces of the upper support block (7) and the lower support block (14) are both connected to support springs (6), the upper part of the sludge dryer body (1) is connected to an upper filter sludge mesh plate (5) on the support springs (6), and the sludge dryer body (1) is provided with a plurality of filter plates (5). 1) The lower part is connected to a lower filter mud screen plate (13) on a support spring (6), a vibration motor (8) is fixed on an upper filter mud screen plate (5), the upper filter mud screen plate (5) and the lower filter mud screen plate (13) are connected to each other via a connecting plate (9), a waste heat steam pipe (10) is extended into the middle of the sludge dryer body (1), the waste heat steam pipe (10) is connected to a heat dissipation pipe (11) in the sludge dryer body (1), and the heat dissipation pipe (11) is connected to a plurality of upper heat dissipation pipes (23) upwardly. The highest point of the upper heat dissipation pipe (23) is connected to a heat dissipation plate (24), the heat dissipation pipe (11) is connected downward to a plurality of lower heat dissipation pipes (12), the lowest point of the lower heat dissipation pipe (12) is connected to the heat dissipation plate (24), the top of the sludge dryer body (1) is connected to an induced draft fan (4), a filter is provided in front of the air inlet of the induced draft fan (4), the bottom of the sludge dryer body (1) is a funnel-shaped mud outlet (16), and an electromagnetic valve (17) is provided at the outlet of the funnel-shaped mud outlet (16). ), a dispersion cone (19) is provided below the electromagnetic valve (17) in the funnel-shaped mud outlet (16), the lower end of the funnel-shaped mud outlet (16) is connected to a cooling box (20), an air cooling pipe (21) connected to the dispersion cone (19) is vertically provided in the cooling box (20), a blower (18) is connected to the bottom of the cooling box (20), a dry sludge collection box (22) is provided at the bottom of the cooling box (20), and the bottom end of the air cooling pipe (21) is in communication with the dry sludge collection box (22).

2. The waste heat steam and air-cooled sludge dryer according to claim 1 is characterized in that: The upper surfaces of the upper supporting block (7) and the lower supporting block (14) are inclined surfaces, and the supporting spring (6) is fixed on the inclined surfaces.

3. The waste heat steam and air-cooled sludge drying machine according to claim 1 is characterized in that: The upper heat dissipation pipe (23) and the lower heat dissipation pipe (12) are both U-shaped pipes, and the sealed ends of the U-shaped pipes are provided with through holes that communicate with the heat dissipation plate (24).

4. The waste heat steam and air-cooled sludge drying machine according to claim 3 is characterized in that: The upper heat dissipation pipe (23) and the lower heat dissipation pipe (12) are connected to the heat dissipation pipe (11) in an alternating manner up and down.

5. The waste heat steam and air-cooled sludge drying machine according to claim 1 is characterized in that: The outlet pipeline of the induced draft fan (4) is connected to a condenser (3).

6. The waste heat steam and air-cooled sludge drying machine according to claim 1 is characterized in that: The dispersion cone (19) is provided with a dispersion pipe (15) that passes through from top to bottom, and the dispersion pipe (15) is connected to the air cooling pipe (21).

7. The waste heat steam and air-cooled sludge drying machine according to claim 4 is characterized in that: The surface of the heat dissipation plate (24) away from the upper heat dissipation pipe (23) and the surface connected to the lower heat dissipation pipe (12) are arc-shaped surfaces.

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