Circulating water supply system

Abstract

The utility model relates to a circulating water supply system, which is applied to the field of circulating water treatment, and comprises a flue gas treatment device for treating waste gas in wastewater discharged by a twin-screw extrusion granulator, the feeding end of the flue gas treatment device is provided with a first conveying device for conveying the wastewater from the twin-screw extrusion granulator to the flue gas treatment device, and the feeding end of the flue gas treatment device is provided with a second conveying device for conveying the wastewater from the twin-screw extrusion granulator to the flue gas treatment device. The discharge end of the flue gas treatment device is communicated with a filter tank, the filter tank is communicated with a cooling tank through a second conveying device, and the cooling tank is provided with a circulating device for conveying filtered wastewater to the feed end of the first conveying device. The device has the technical effects that waste water in waste materials can be recycled after being filtered and cooled, the device is energy-saving and environment-friendly, meanwhile, the problem that waste gas in the waste materials is difficult to treat is solved through the flue gas treatment device, the treatment efficiency of the waste materials discharged by the double-screw extrusion pelletizer is improved, and the water treatment cost of enterprises is saved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of circulating water treatment, in particular to a circulating water supply system. BACKGROUND

[0002] A double-screw extrusion granulator is a kind of high-efficiency plastic processing equipment, which is widely used in the plastic, rubber, chemical fiber and other industries. The double-screw extrusion granulator will discharge waste materials in the production and manufacturing process, and the waste materials contain waste water and waste gas. These waste materials mainly come from added chemical auxiliary materials and substances released during the cracking of plastic particles.

[0003] Publication No. CN202813950U discloses a circulating water system, which comprises a production device circulating loop and a refrigeration station circulating loop. The production device and the refrigeration station are connected together through the water inlet pipeline, and a first water sequence valve is arranged on the water inlet pipeline between the production device and the refrigeration station. The production device and the refrigeration station are connected together through the water outlet pipeline, and a second water sequence valve is arranged on the water outlet pipeline between the production device and the refrigeration station.

[0004] The above-mentioned circulating water system is applied to the waste material treatment process of the double-screw extrusion granulator, and it is difficult to treat the waste gas, which leads to the decrease of the overall system waste water treatment efficiency and the increase of the water treatment cost of enterprises. SUMMARY

[0005] In order to help solve the problem that the circulating water system in the related art is difficult to treat the waste gas existing in the waste materials discharged by the double-screw extrusion granulator, which leads to the decrease of the overall system waste water treatment efficiency and the increase of the water treatment cost of enterprises, the application provides a circulating water supply system, which adopts the following technical scheme: a flue gas treatment device for treating the waste gas in the waste materials discharged by the double-screw extrusion granulator is arranged, a first conveying device for conveying the waste materials from the double-screw extrusion granulator to the flue gas treatment device is arranged at the feeding end of the flue gas treatment device, a filtering pool is communicated with the discharging end of the flue gas treatment device, a cooling pool is communicated with the filtering pool through a second conveying device, and a circulating device for conveying the filtered waste water to the feeding end of the first conveying device is arranged on the cooling pool.

[0006] In a specific implementable scheme, the first conveying device comprises a filtering water tank communicated with the feeding end of the flue gas treatment device, and a first conveying assembly is arranged at the water inlet end of the filtering water tank, which is used to convey the waste materials at the discharging end of the double-screw extrusion granulator to the filtering water tank.

[0007] In a specific implementable scheme, the first conveying assembly comprises a vacuum pump arranged at the discharging end of the double-screw extrusion granulator, the feeding end of the vacuum pump is communicated with the discharging end of the double-screw extrusion granulator, and the discharging end of the vacuum pump is communicated with the water inlet end of the filtering water tank.

[0008] In one specific implementation, the flue gas treatment device comprises a sediment tank arranged at the water outlet end of the filter water tank and communicated with the filter water tank, the water outlet end of the sediment tank is communicated with the filter tank, the filter water tank is provided with a flue gas treatment device, the air inlet end of the flue gas treatment device is communicated with the sediment tank, and the air outlet end of the flue gas treatment device is communicated with the air.

[0009] In one specific implementation, the sediment tank is provided with a cleaning port, and a cover plate is detachably connected to the sediment tank, and the cleaning port is located at the inner edge of the cover plate.

[0010] In one specific implementation, the filter tank is provided with two stop blocks in opposite positions, and a filter screen matched with the filter tank is arranged between the two stop blocks, and the filter screen divides the filter tank into a filtering area and a clean water area.

[0011] In one specific implementation, the second conveying device comprises a filter press, the water outlet end of the filter press is communicated with the cooling tank, and the water inlet end of the filter press is provided with a second conveying assembly, and the second conveying assembly is used to convey the filtered wastewater in the filter tank to the cooling tank.

[0012] In one specific implementation, the second conveying assembly comprises a first water pump arranged at the water inlet end of the filter press, the material inlet end of the first water pump is communicated with the filter tank, and the material outlet end of the first water pump is communicated with the water inlet end of the filter press.

[0013] In one specific implementation, the circulating device comprises a second water pump, the material inlet end of the second water pump is communicated with the cooling tank, and the material outlet end of the second water pump is communicated with the material inlet end of the vacuum pump.

[0014] In one specific implementation, the cooling tank is provided with a cooling pipe, one side of the cooling tank is provided with a buffer tank, the buffer tank is communicated with the material outlet end of the cooling pipe through a cooling tower, and the buffer tank is communicated with the material inlet end of the cooling pipe through a third water pump.

[0015] In summary, the application has at least the following beneficial technical effects: the waste is discharged from the double screw extruding granulator, the first conveying device is started to convey the waste from the double screw extruding granulator to the flue gas treatment device, the flue gas treatment device is started to treat the waste gas in the waste, so that the treated waste gas meets the discharge conditions, the waste water in the waste is conveyed to the filter tank for filtration, the second conveying device is started to convey the filtered waste water in the filter tank to the cooling tank for cooling, and finally the circulating device is started to convey the cooled waste water in the cooling tank back to the feed end of the first conveying device, realizing the recyclable use of the filtered and cooled waste water in the waste, energy saving and environmental protection, solving the problem of difficult treatment of waste gas in the waste through the flue gas treatment device, improving the treatment efficiency of the waste discharged from the double screw extruding granulator, and saving the water treatment cost of the enterprise. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the embodiment of the application.

[0017] Figure 2 is Figure 1 is an enlarged schematic diagram of A in

[0018] Fig. 1 is a schematic diagram of the flue gas treatment device; Fig. 2 is a schematic diagram of the first conveying device; Fig. 3 is a schematic diagram of the second conveying device; Fig. 4 is a schematic diagram of the filter tank; Fig. 5 is a schematic diagram of the cooling tank; Fig. 6 is a schematic diagram of the circulating device; Fig. 7 is a schematic diagram of the filter water tank; Fig. 8 is a schematic diagram of the vacuum pump; Fig. 9 is a schematic diagram of the sedimentation water tank; Fig. 10 is a schematic diagram of the flue gas treatment device; Fig. 11 is a schematic diagram of the cover plate; Fig. 12 is a schematic diagram of the filter screen; Fig. 13 is a schematic diagram of the filter area; Fig. 14 is a schematic diagram of the clean water area; Fig. 15 is a schematic diagram of the filter press; Fig. 16 is a schematic diagram of the first water pump; Fig. 17 is a schematic diagram of the second water pump; Fig. 18 is a schematic diagram of the buffer tank; Fig. 19 is a schematic diagram of the cooling pipe; Fig. 20 is a schematic diagram of the third water pump; Fig. 21 is a schematic diagram of the cooling tower; and Fig. 22 is a schematic diagram of the double screw extruding granulator. DETAILED DESCRIPTION

[0019] The following will be described in detail below with reference to the accompanying Figures 1-2 The application will be further described in detail.

[0020] The embodiment of the application discloses a circulating water supply system.

[0021] Reference Figure 1 and Figure 2, the circulating water supply system comprises a flue gas treatment device 1 for treating waste gas in waste material discharged by the double screw extrusion granulator 22, a first conveying device 2 is arranged at the feeding end of the flue gas treatment device 1 and used for conveying the waste material from the double screw extrusion granulator 22 to the flue gas treatment device 1, a filtering tank 4 is communicated with the discharging end of the flue gas treatment device 1, two stop blocks are relatively fixedly connected in the filtering tank 4, a filtering screen 12 matching the size of the filtering tank 4 is inserted between the two stop blocks, and the filtering screen 12 divides the filtering tank 4 into a filtering area 13 and a clean water area 14. The filtering screen 12 plays a filtering role on the waste water in the filtering tank 4, reduces the impurity content in the waste water, and facilitates subsequent replacement of the filtering screen 12 by the installation mode of the inserted filtering screen 12. The filtering tank 4 is communicated with a cooling tank 5 through a second conveying device 3, and the cooling tank 5 is provided with a circulating device 6 used for conveying the filtered waste water to the feeding end of the first conveying device 2.

[0022] Therefore, when the waste material is discharged from the double screw extrusion granulator 22, the first conveying device 2 is started to convey the waste material from the double screw extrusion granulator 22 to the flue gas treatment device 1, the flue gas treatment device 1 is started to treat the waste gas in the waste material, the waste water in the waste material is conveyed to the filtering tank 4 for filtration, the second conveying device 3 is started to convey the filtered waste water in the filtering tank 4 to the cooling tank 5 for cooling, and finally the circulating device 6 is started to convey the cooled waste water in the cooling tank 5 back to the feeding end of the first conveying device 2, so that the filtered and cooled waste water in the waste material can be recycled, energy saving and environmental protection are achieved, the problem of difficult treatment of the waste gas in the waste material is solved by the flue gas treatment device 1, and the treatment efficiency of the waste material discharged from the double screw extrusion granulator 22 is improved, and the water treatment cost of the enterprise is saved.

[0023] With reference to Figure 1 and Figure 2 , the first conveying device 2 comprises a filtering water tank 7 communicated with the feeding end of the flue gas treatment device 1, a plurality of filter sheets are arranged in the filtering water tank 7, the waste material discharged from the double screw extrusion granulator 22 passes through the plurality of filter sheets to preliminarily filter the relatively large impurities in the waste material, a first conveying assembly is arranged at the water inlet end of the filtering water tank 7, the first conveying assembly is used for conveying the waste material at the discharging end of the double screw extrusion granulator 22 to the filtering water tank 7, and the first conveying assembly comprises a vacuum pump 8 arranged at the discharging end of the double screw extrusion granulator 22, the feeding end of the vacuum pump 8 is communicated with the discharging end of the double screw extrusion granulator 22, and the discharging end of the vacuum pump 8 is communicated with the water inlet end of the filtering water tank 7. Therefore, when the vacuum pump 8 is started, the waste material discharged from the double screw extrusion granulator 22 is conveyed to the filtering water tank 7, and the relatively large impurities in the waste material are preliminarily filtered by the filtering water tank 7.

[0024] With reference to Figure 1 and Figure 2, the flue gas treatment device 1 includes a sediment water tank 9 arranged at the water outlet end of the filter water tank 7 and communicated with the filter water tank 7, and the water outlet end of the sediment water tank 9 is communicated with the filter tank 4. In the embodiment of the application, the bottom of the sediment water tank 9 is provided with a discharge hopper, which plays a guiding role for the solid in the waste in the sediment water tank 9. Two cleaning openings are arranged on the discharge hopper of the sediment water tank 9, one of which is located at the bottom of the discharge hopper, and the other is located at the side of the discharge hopper. The sediment water tank 9 is detachably connected with two cover plates 11, and the two cover plates 11 cover the cleaning openings respectively. Therefore, when the solid in the waste in the sediment water tank 9 needs to be cleaned to a certain extent, the operator can open the sediment water tank 9 by using the cover plate 11 and clean the solid waste in the sediment water tank 9.

[0025] With reference to Figure 1 and Figure 2 , the top of the filter water tank 7 is provided with a flue gas treatment device 10, the gas inlet end of the flue gas treatment device 10 is communicated with the sediment water tank 9, and the gas outlet end of the flue gas treatment device 10 is communicated with the air. The flue gas treatment device 10 can filter and adsorb harmful substances in the waste gas, significantly reduce the emission of pollutants in the waste gas, protect the environment and human health, meet the requirements of environmental protection regulations and policies, and reduce the energy consumption and operation cost of the overall system, thereby improving the economic benefit of the enterprise.

[0026] With reference to Figure 1 and Figure 2 , the second conveying device 3 includes a filter press 15, the water outlet end of the filter press 15 is communicated with the cooling tank 5, and the water inlet end of the filter press 15 is provided with a second conveying assembly. The filter press 15 is mainly used for efficiently separating solid particles from liquid in the waste water. By applying pressure, the solid particles in the waste water are intercepted by the filter cloth, and the clean liquid flows out through the filter cloth, so as to achieve the purpose of solid-liquid separation. The second conveying assembly is used for conveying the filtered waste water in the filter tank 4 to the cooling tank 5. The second conveying assembly includes a first water pump 16 arranged at the water inlet end of the filter press 15. The material inlet end of the first water pump 16 is communicated with the filter tank 4, and the material outlet end of the first water pump 16 is communicated with the water inlet end of the filter press 15. Therefore, by starting the first water pump 16, the waste water in the filter tank 4 is conveyed to the filter press 15. After the waste water is treated by the filter press 15, the content of solid particles in the waste water is significantly reduced, the water quality is purified, and the purification efficiency of the waste water treatment is further improved, which is convenient for subsequent cooling operation of the waste water.

[0027] With reference to Figure 1 and Figure 2, the circulating device 6 comprises a second water pump 17, the feeding end of the second water pump 17 is communicated with the cooling pool 5, the discharging end of the second water pump 17 is communicated with the feeding end of the vacuum pump 8, the number of the second water pump 17 in the embodiment of the application can be adaptively adjusted according to the scale of the circulating water supply system, so as to realize constant pressure water supply of the whole system. Therefore, the second water pump 17 is started, and the waste water cooled in the cooling pool 5 is circulated and delivered to the feeding end of the vacuum pump 8, so that the waste water after filtration and cooling treatment can be recycled, the recycling rate of waste water is improved, energy saving and environmental protection are realized, and the production cost of enterprises is reduced.

[0028] With reference to Figure 1 and Figure 2 , the cooling pool 5 is provided with a curved and spiral cooling pipe 19, one side of the cooling pool 5 is provided with a buffer pool 18, the buffer pool 18 is communicated with the discharging end of the cooling pipe 19 through a cooling tower 21, and the buffer pool 18 is communicated with the feeding end of the cooling pipe 19 through a third water pump 20. Therefore, the cooling tower 21 is started, the cooling water in the cooling pipe 19 is delivered to the cooling tower 21 for cooling, the cooling tower 21 delivers the cooled cooling water to the buffer pool 18, and then the third water pump 20 is started, the cooling pool 5 in the buffer pool 18 is delivered back to the cooling pipe 19, so that the cooling water in the cooling pipe 19 is circulated and cooled, thereby improving the cooling effect of the cooling pipe 19 on the waste water in the cooling pool 5.

[0029] The implementation principle of the embodiment of the application is that the waste material is discharged from the double-screw extruding granulator 22, the vacuum pump 8 is started, the waste material discharged from the double-screw extruding granulator 22 is delivered to the filtering water tank 7, the filtering water tank 7 preliminarily filters the impurities with large volume in the waste material, the preliminarily filtered waste material is delivered to the sedimentation water tank 9, the solid in the waste material is deposited in the sedimentation water tank 9, the operator can open the sedimentation water tank 9 by using the cover plate 11 and clean the solid waste material in the sedimentation water tank 9, the waste gas in the waste material is treated by the flue gas treater 10, harmful substances in the waste gas are filtered and adsorbed, the quality of the waste gas discharged into the air is improved, and the discharged waste gas meets the environmental protection regulations;

[0030] The waste water in the waste material continues to be discharged to the filtering area 13 of the filtering tank 4 for filtering, and after being filtered again by the filtering screen 12, the waste water is discharged to the clean water area 14. The first water pump 16 is started to convey the waste water in the filtering tank 4 to the filter press 15. After being treated by the filter press 15, the waste water has a significantly reduced solid particle content, the water quality is purified, the purification efficiency of the waste water treatment is further improved, and the subsequent cooling operation of the waste water is facilitated. The second water pump 17 is started to cyclically convey the waste water cooled in the cooling tank 5 to the feeding end of the vacuum pump 8, the waste water is recycled, the waste water treated by filtering and cooling can be recycled, the recycling rate of the waste water is improved, the energy is saved and the environment is protected, the production cost of the enterprise is reduced, the problem of difficult treatment of waste gas in the waste material is solved by the flue gas treatment device 1, the treatment efficiency of the waste material discharged by the double-screw extrusion granulator 22 is improved, and the water treatment cost of the enterprise is saved.

[0031] The specific embodiment is only an explanation of the present application, and is not a limitation of the present application. Those skilled in the art can make modifications to the embodiment without creative contribution according to the needs after reading the specification, and as long as the modifications are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A recirculating water supply system characterized by: The application relates to a flue gas treatment device (1) for treating waste gas in waste discharged from a double-screw extruding granulator (22), a first conveying device (2) for conveying the waste from the double-screw extruding granulator (22) to the flue gas treatment device (1) is arranged at the feeding end of the flue gas treatment device (1), a filtering tank (4) is communicated with the discharging end of the flue gas treatment device (1), a cooling tank (5) is communicated with the filtering tank (4) through a second conveying device (3), and a circulating device (6) for conveying filtered waste water to the feeding end of the first conveying device (2) is arranged on the cooling tank (5).

2. The recirculating water supply system of claim 1, wherein: The first conveying device (2) comprises a filtering water tank (7) communicated with the feeding end of the flue gas treatment device (1), and a first conveying assembly is arranged at the water inlet end of the filtering water tank (7) and used for conveying the waste at the discharging end of the double-screw extruding granulator (22) to the filtering water tank (7).

3. The recirculating water supply system of claim 2, wherein: The first conveying assembly comprises a vacuum pump (8) arranged at the discharging end of the double-screw extruding granulator (22), the feeding end of the vacuum pump (8) is communicated with the discharging end of the double-screw extruding granulator (22), and the discharging end of the vacuum pump (8) is communicated with the water inlet end of the filtering water tank (7).

4. The recirculating water supply system of claim 2, wherein: The flue gas treatment device (1) comprises a sedimentation water tank (9) arranged at the water outlet end of the filtering water tank (7) and communicated with the filtering water tank (7), the water outlet end of the sedimentation water tank (9) is communicated with the filtering tank (4), a flue gas treatment device (10) is arranged on the filtering water tank (7), the air inlet end of the flue gas treatment device (10) is communicated with the sedimentation water tank (9), and the air outlet end of the flue gas treatment device (10) is communicated with the air.

5. The recirculating water supply system of claim 4, wherein: A cleaning opening is arranged on the sedimentation water tank (9), and a cover plate (11) is detachably connected to the sedimentation water tank (9), and the cleaning opening is located at the inner edge of the cover plate (11).

6. The recirculating water supply system of claim 1, wherein: Two stoppers are oppositely arranged in the filtering tank (4), a filtering screen (12) matched with the filtering tank (4) is arranged between the two stoppers, and the filtering screen (12) divides the filtering tank (4) into a filtering area (13) and a clean water area (14).

7. The recirculating water supply system of claim 1, wherein: The second conveying device (3) comprises a filter press (15), the water outlet end of the filter press (15) is communicated with the cooling tank (5), a second conveying assembly is arranged at the water inlet end of the filter press (15) and used for conveying the filtered waste water in the filtering tank (4) to the cooling tank (5).

8. The recirculating water supply system of claim 7, wherein: The second conveying assembly comprises a first water pump (16) arranged at the water inlet end of the filter press (15), the feeding end of the first water pump (16) is communicated with the filtering tank (4), and the discharging end of the first water pump (16) is communicated with the water inlet end of the filter press (15).

9. The recirculating water supply system of claim 3, wherein: The circulating device (6) comprises a second water pump (17), the feeding end of the second water pump (17) is communicated with the cooling tank (5), and the discharging end of the second water pump (17) is communicated with the feeding end of the vacuum pump (8).

10. The recirculating water supply system of claim 9, wherein: The cooling tank (5) is provided with a cooling pipe (19), one side of the cooling tank (5) is provided with a buffer tank (18), the buffer tank (18) is communicated with the discharge end of the cooling pipe (19) through a cooling tower (21), and the buffer tank (18) is communicated with the feeding end of the cooling pipe (19) through a third water pump (20).

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