An efficient evaporator for sewage treatment

Abstract

The invention discloses an efficient evaporator for sewage treatment, comprising an outer tank body and a motor fixed on the top surface of the outer tank body, wherein the lower part of the outer tank body is conical, and the diameter of the part gradually decreases from top to bottom, and a guide tube is fixed on the inner side of the bottom of the outer tank body, and the diameter of the guide tube gradually increases from top to bottom; the invention forms an annular mixing zone on the periphery of the guide tube through the inner cavity of the outer tank body, and a plurality of double-cone cleaning and stirring components are distributed in an annular manner in the mixing zone, and each double-cone cleaning and stirring component can fully mix the sewage in the mixing zone under the drive of the motor, so that the heat of each part in the sewage is balanced, which is beneficial to the evaporation of the sewage, and can automatically remove the scaling and coking materials generated in the tank body of the evaporator during the evaporation process, so as to prevent the scaling and coking materials generated in the tank body for a long time from being difficult to remove and affecting the capacity of the tank body, so as to solve the problem of more residues on the inner wall of the evaporator proposed in the prior art.

Description

Technical Field

[0001] The present invention belongs to the technical field related to sewage treatment, and particularly relates to an efficient sewage treatment evaporator. Background Art

[0002] Sewage is polluted domestic water or industrial water. The interior of sewage contains various pollutants mixed with industrial waste gases, and the pollutant structure of industrial sewage is complex, making it difficult to treat and not easy to purify in water. Sewage evaporation treatment is one of the common methods for sewage purification. A sewage evaporator is a device for sewage evaporation treatment. It heats, boosts pressure, and raises the temperature to increase the pressure and temperature of water vapor, enabling the sewage to evaporate better, and then condenses and recovers through a condensation device to achieve the purification purpose.

[0003] Since sediment and scale are likely to form in the evaporator tank during the heating process of the sewage evaporator, or coking substances are generated at high temperatures. After retrieval, the sewage treatment evaporator with convenient slag removal disclosed in the publication number 212581551U includes a shell and a heater therein. The shell is also provided with a clear water outlet, a steam outlet, a steam inlet, a wastewater inlet, and a slag outlet arranged from top to bottom. Among them: a vortex stirring slag removal device is further arranged at the bottom of the heater. The vortex stirring slag removal device includes a vortex motor fixed at the bottom of the shell, a stirring shaft and vortex blades connected to the vortex motor, and the slag outlet is arranged at the bottom position of the shell.

[0004] However, the above sewage treatment evaporator technology has the following problems: The above sewage treatment evaporator generates a vortex negative pressure through the operation of the vortex stirring slag removal device, so that the scale and coking substances on the evaporator heater are adsorbed downward under the action of the vortex negative pressure of the vortex blades, and then discharged from the slag outlet. Since the adsorption pressure is related to the distance between the substance and the vortex blades, the farther the distance, the smaller the suction force, resulting in a gradual decrease in the cleaning effect from the bottom to the top of the evaporator tank wall, that is, the cleaning is incomplete, leading to more residues on the inner wall of the evaporator, thereby affecting the capacity of the evaporator and reducing the purification efficiency of sewage. Summary of the Invention

[0005] The purpose of the present invention is to provide an efficient sewage treatment evaporator to solve the problem of more residues on the inner wall of the evaporator proposed in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: An efficient evaporator for sewage treatment, comprising an outer tank body and a motor fixed on the top surface of the outer tank body. The lower part of the outer tank body is conical, and the diameter of this part gradually decreases from top to bottom. A diversion pipe is fixed inside the bottom of the outer tank body, and the diameter of the diversion pipe gradually increases from top to bottom. An annular mixing area is formed inside the outer tank body around the diversion pipe, and a number of double-cone cleaning and mixing components are annularly distributed in the mixing area. The output shaft end of the motor extends into the outer tank body and is fixed with a top frame. A swing arm corresponding to the double-cone cleaning and mixing component is rotatably arranged at the end of the top frame, and the double-cone cleaning and mixing component is fixed at the end of the swing arm. A shaft winding component is fixed at the top of the diversion pipe. A transmission component is arranged on the top frame. When the top frame rotates and cooperates with the shaft winding component, the double-cone cleaning and mixing component is driven by the transmission component to stir the sewage in the mixing area and alternately clean the inner side of the outer tank body and the outer conical surface of the diversion pipe.

[0007] Preferably, the double-cone cleaning and mixing component includes a fixed rod, the fixed rod is fixed at the end of the swing arm, a column body is fixed at the bottom end of the fixed rod, and annularly distributed blades are fixed on the column surface of the column body.

[0008] Preferably, the blades are spiral, and the radial width of the blades gradually decreases from top to bottom.

[0009] Preferably, the shaft winding component includes a fixed shaft, the top end of the fixed shaft extends into the top frame and is fixed with a gear disk, the fixed shaft is rotatably connected with the top frame, the bottom end of the fixed shaft extends out of the top frame and is fixed with a filter cylinder, and the filter cylinder is fixed at the top of the diversion pipe and is communicated with the pipe cavity of the diversion pipe.

[0010] Preferably, the filter cylinder is cylindrical, and a number of uniformly distributed through openings are formed on the column surface. A filter screen is fixed in the through openings, and the pipe cavity of the filter cylinder is communicated with the inner cavity of the outer tank body through the through openings.

[0011] Preferably, the transmission component includes a first rotating shaft, the first rotating shaft is rotatably connected with the top frame, the top end of the first rotating shaft extends into the top frame and is fixed with a first gear, the first gear meshes with the gear disk, and the bottom end of the first rotating shaft extends out of the top frame and is fixed with a second gear.

[0012] Preferably, a second rotating shaft is fixedly connected to the end of the swing arm away from the double-cone cleaning and mixing component, the top end of the second rotating shaft is rotatably connected with the top frame, and a third gear is fixed on the outer side of the second rotating shaft. The third gear meshes with the second gear.

[0013] Preferably, a heating pipe is fixed inside the bottom of the diversion pipe, and the heating pipe is adapted to the taper of the diversion pipe and is spirally arranged.

[0014] Preferably, a sewage discharge pipe communicating with the inner cavity of the diversion pipe is fixed at the bottom of the outer tank body, and a water inlet pipe communicating with the pipe cavity of the sewage discharge pipe is fixed on the side wall of the sewage discharge pipe.

[0015] Preferably, a steam outlet pipe communicating with the inner cavity of the outer tank body is fixed at the top of the outer tank body.

[0016] Compared with the prior art, the present invention provides an efficient sewage treatment evaporator, which has the following beneficial effects:

[0017] 1. In the present invention, an annular mixing area is formed around the diversion pipe in the inner cavity of the outer tank body, and a plurality of double-cone cleaning and mixing components are annularly distributed in the mixing area. Driven by the motor, each double-cone cleaning and mixing component can, on the one hand, fully mix the sewage in the mixing area to make the heat of each part of the sewage balanced, which is beneficial to the evaporation of the sewage. On the other hand, it can automatically remove the scale and coking substances generated in the evaporator tank body during the evaporation process, preventing them from accumulating in the tank body for a long time and being difficult to remove, which affects the tank capacity, so as to solve the problem of more residues on the inner wall of the evaporator proposed in the prior art;

[0018] 2. When treating sewage in the present invention, the sewage discharge valve on the sewage discharge pipe is in a closed state. The sewage introduced by the water inlet pipe enters the diversion pipe, and the sewage introduced into the diversion pipe is discharged into the inner cavity of the tank through the filter screen in the through hole. The sundries intercepted by the filter screen settle at the bottom of the diversion pipe under the action of gravity and are discharged through the sewage discharge valve of the sewage discharge pipe during cleaning, which is convenient for filtering the introduced sewage and enabling the sundries to be discharged in time by natural sedimentation;

[0019] 3. During the process of sewage flow, the sewage introduced into the diversion pipe is preheated by the heating pipe, so that the sewage starts to heat up during the process of being introduced into the inner cavity of the outer tank body. Part of the heat generated by the heating pipe is transferred to the mixing area through the diversion pipe to reheat the sewage in the mixing area, thereby making full use of the heat generated by the heating pipe, reducing heat loss, and improving the sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0021] Figure 1 is a schematic diagram of an efficient sewage treatment evaporator proposed by the present invention;

[0022] Figure 2 is a semi-sectional structure schematic diagram of an efficient sewage treatment evaporator proposed by the present invention;

[0023] Figure 3 is a semi-sectional structure schematic diagram of an efficient sewage treatment evaporator proposed by the present invention from another perspective;

[0024] Figure 4 Schematic diagram of the half-section structure of the top frame proposed by the present invention;

[0025] Figure 5 Schematic diagram of the structure of the other perspective of the half-section of the top frame proposed by the present invention;

[0026] Figure 6 is Figure 3 Enlarged structure diagram at position A in;

[0027] Figure 7 Schematic diagram of the structure of the double-cone cleaning and stirring component proposed by the present invention;

[0028] Figure 8 Schematic diagram of the structure of the other perspective of the double-cone cleaning and stirring component proposed by the present invention;

[0029] In the figure: 1. Outer tank body; 11. Water inlet pipe; 12. Sewage discharge pipe; 13. Steam outlet pipe; 2. Motor; 3. Diversion pipe; 31. Heating pipe; 4. Top frame; 5. Swing arm; 6. Double-cone cleaning and stirring component; 61. Fixed rod; 62. Cylinder; 63. Blade; 7. Rotating shaft component; 71. Gear disc; 72. Fixed shaft; 73. Filter cartridge; 731. Through port; 732. Filter screen; 8. Transmission component; 81. First rotating shaft; 82. First gear; 83. Second gear; 84. Second rotating shaft; 85. Third gear. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3, the present invention provides a technical solution: an efficient sewage treatment evaporator, including an outer tank body 1 and a motor 2 fixed on the top surface of the outer tank body 1. Different from the prior art, a heating device is not provided on the inner wall of the outer tank body 1. Therefore, the material of the outer tank body 1 can be made of a material with poor thermal conductivity, or a heat insulation layer can be provided inside the tank wall of the outer tank body 1 to avoid temperature loss in the inner cavity, thereby improving the evaporation effect of sewage. The lower part of the outer tank body 1 is conical, and the diameter of this part gradually decreases from top to bottom. A diversion pipe 3 is fixed inside the bottom of the outer tank body 1, and the diameter of the diversion pipe 3 gradually increases from top to bottom. An annular mixing area is formed in the inner cavity of the outer tank body 1 around the diversion pipe 3, and a number of double-cone cleaning and stirring components 6 are annularly distributed in the mixing area. The output shaft end of the motor 2 extends into the outer tank body 1 and is fixed with a top frame 4. A swing arm 5 corresponding to the double-cone cleaning and stirring component 6 is rotatably arranged at the end of the top frame 4, and the double-cone cleaning and stirring component 6 is fixed at the end of the swing arm 5. A winding shaft component 7 is fixed at the top of the diversion pipe 3, and a transmission component 8 is arranged on the top frame 4. When the top frame 4 rotates, in cooperation with the winding shaft component 7, the double-cone cleaning and stirring component 6 is driven by the transmission component 8 to stir the sewage in the mixing area and alternately clean the inner side of the outer tank body 1 and the outer conical surface of the diversion pipe 3. On the one hand, it can fully stir the sewage in the mixing area, make the heat of each part of the sewage balanced, and facilitate the evaporation of sewage. On the other hand, it can automatically remove the scale and coking substances generated in the evaporator tank body during the evaporation process, preventing them from accumulating in the tank body for a long time and being difficult to remove, which affects the tank body capacity.

[0032] Please refer to Figure 7 And Figure 8 , the double-cone cleaning and stirring component 6 includes a fixed rod 61, the fixed rod 61 is fixed at the end of the swing arm 5, a cylinder 62 is fixed at the bottom end of the fixed rod 61, and annularly distributed blades 63 are fixed on the cylindrical surface of the cylinder 62. The blades 63 are spiral, and the radial width of the blades 63 gradually decreases from top to bottom. The spiral structure of the blades 63 matches the inner conical surface of the outer tank body 1 and the outer conical surface of the diversion pipe 3. When the swing arm 5 rotates to the end facing outwards and the length direction points to the axis of the outer tank body 1 and the diversion pipe 3, the blades 63 can clean the dirt on the inner conical surface of the outer tank body 1. When the swing arm 5 rotates to the end facing inwards and the length direction points to the axis of the outer tank body 1 and the diversion pipe 3, the blades 63 can clean the dirt on the outer conical surface of the diversion pipe 3.

[0033] Please refer to Figure 4 And Figure 5 , the winding shaft component 7 includes a fixed shaft 72, the top end of the fixed shaft 72 extends into the top frame 4 and is fixed with a gear disk 71, the fixed shaft 72 is rotatably connected with the top frame 4, the bottom end of the fixed shaft 72 extends out of the top frame 4 and is fixed with a filter cylinder 73, the filter cylinder 73 is fixed at the top of the diversion pipe 3 and is communicated with the pipe cavity of the diversion pipe 3, as Figure 6As shown in the figure, the filter cartridge 73 is cylindrical, and a number of uniformly distributed through openings 731 are provided on the cylindrical surface. A filter screen 732 is fixed in the through opening 731. The lumen of the filter cartridge 73 communicates with the inner cavity of the outer tank 1 through the through opening 731. The sewage introduced into the diversion pipe 3 is filtered by the filter screen 732 in the through opening 731 and then discharged into the inner cavity of the tank 1. The intercepted debris settles at the bottom of the diversion pipe 3 under the action of gravity. The transmission component 8 includes a first rotating shaft 81. The first rotating shaft 81 is rotatably connected to the top frame 4. The top end of the first rotating shaft 81 extends into the top frame 4 and is fixed with a first gear 82. The first gear 82 meshes with the toothed disc 71. The bottom end of the first rotating shaft 81 extends outside the top frame 4 and is fixed with a second gear 83. One end of the swing arm 5 away from the double-cone cleaning and stirring component 6 is fixedly connected with a second rotating shaft 84. The top end of the second rotating shaft 84 is rotatably connected to the top frame 4. A third gear 85 is fixed on the outside of the second rotating shaft 84. The third gear 85 meshes with the second gear 83. When the top frame 4 rotates under the drive of the motor 2, the swing arm 5 can be driven to make a revolution around the toothed disc 71 as the center. Under the meshing of the first gear 82 and the toothed disc 71, the first rotating shaft 81 can be rotated. Under the meshing of the second gear 83 at the bottom end of the first rotating shaft 81 and the third gear 85, the swing arm 5 can be rotated. That is, during the process of the swing arm 5 making a revolution around the toothed disc 71 as the center, it can also rotate self in the mixing area.

[0034] Please refer to Figure 2 and Figure 3 , different from the prior art, a heating pipe 31 is fixed on the inner side of the bottom of the diversion pipe 3 in the present invention. The heating pipe 31 heats the sewage in an electric heating form. The heating pipe 31 is adapted to the taper of the diversion pipe 3 and is spirally arranged. The heating pipe 31 can preheat the sewage introduced into the diversion pipe 3, so that the sewage starts to heat up during the process of being introduced into the inner cavity of the outer tank 1. The diversion pipe 3 is made of a heat-conducting material, and part of the heat generated by the heating pipe 31 is transferred to the mixing area through the diversion pipe 3 to reheat the sewage in the mixing area, thereby making full use of the heat generated by the heating pipe 31, reducing heat loss, and improving the sewage treatment efficiency.

[0035] A sewage discharge pipe 12 communicating with the inner cavity of the diversion pipe 3 is fixed at the bottom of the outer tank 1. A sewage discharge valve (not shown in the figure) is connected to the bottom of the sewage discharge pipe 12. The sewage discharge valve is in a closed state during sewage treatment. When cleaning the diversion pipe 3, the sewage discharge pipe 12 can be opened through the sewage discharge valve, so that the impurities remaining in the bottom cavity of the diversion pipe 3 can be removed. A water inlet pipe 11 communicating with the lumen of the sewage discharge pipe 12 is fixed on the side wall of the sewage discharge pipe 12. The water inlet pipe 11 can introduce sewage through a pump. A steam outlet pipe 13 communicating with the inner cavity of the outer tank 1 is fixed at the top of the outer tank 1. A condenser is arranged on the output pipeline of the steam outlet pipe 13. The condensate outlet end is connected to a collection tank. After being condensed by the condenser, purified water is generated and collected through the collection tank.

[0036] Working principle and usage process of the present invention: The sewage introduced through the water inlet pipe 11 enters the diversion pipe 3, and the sewage introduced into the diversion pipe 3 is discharged into the inner cavity of the tank body 1 after being filtered by the filter screen 732 in the through port 731. The sundries intercepted by the filter screen 732 settle at the bottom of the diversion pipe 3 under the action of gravity and are discharged through the sewage discharge valve of the sewage discharge pipe 12 during cleaning. During the flow of sewage, the sewage introduced into the diversion pipe 3 is preheated by the heating pipe 31, so that the sewage starts to heat up during the process of being introduced into the inner cavity of the outer tank body 1. Part of the heat generated by the heating pipe 31 is transferred to the mixing area through the diversion pipe 3 to reheat the sewage in the mixing area, thereby making full use of the heat generated by the heating pipe 31, reducing heat loss, and improving the sewage treatment efficiency;

[0037] During sewage treatment, the motor 2 is started to work. The top frame 4 rotates under the drive of the motor 2. The swing arm 5 can be driven by the top frame 4 to make a revolution around the toothed disc 71 as the center. Under the meshing of the first gear 82 and the toothed disc 71, the first rotating shaft 81 can be rotated. Under the meshing of the second gear 83 at the bottom end of the first rotating shaft 81 and the third gear 85, the swing arm 5 can be rotated. That is, during the process of the swing arm 5 revolving around the toothed disc 71 as the center, it can also rotate within the mixing area. The spiral structure of the blade 63 matches the inner conical surface of the outer tank body 1 and the outer conical surface of the diversion pipe 3. When the swing arm 5 rotates with the end facing outwards and the length direction pointing to the axis of the outer tank body 1 and the diversion pipe 3, the blade 63 can clean the dirt on the inner conical surface of the outer tank body 1. When the swing arm 5 rotates with the end facing inwards and the length direction pointing to the axis of the outer tank body 1 and the diversion pipe 3, the blade 63 can clean the dirt on the outer conical surface of the diversion pipe 3. Through the above method, on the one hand, the sewage in the mixing area can be fully mixed, so that the heat of each part in the sewage is balanced, which is conducive to the evaporation of sewage. On the other hand, the scale and coking substances generated in the evaporator tank body during the evaporation process can be automatically removed, preventing them from accumulating in the tank body for a long time and being difficult to remove, which affects the tank body capacity;

[0038] The steam generated after the sewage is heated is discharged through the steam outlet pipe 13, condensed by the condenser, and then the purified water is generated, and finally collected by the collection box to complete the sewage treatment process.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient evaporator for sewage treatment, comprising an outer tank body (1) and a motor (2) fixed on the top surface of the outer tank body (1), characterized in that: The lower part of the outer tank body (1) is conical, and the diameter of this part gradually decreases from top to bottom. A diversion pipe (3) is fixed to the inner side of the bottom of the outer tank body (1), and the diameter of the diversion pipe (3) gradually increases from top to bottom. An annular mixing area is formed in the inner cavity of the outer tank body (1) around the diversion pipe (3), and a number of double-cone cleaning and mixing components (6) are annularly distributed in the mixing area. The output shaft end of the motor (2) extends into the outer tank body (1) and is fixed with a top frame (4). A swing arm (5) corresponding to the double-cone cleaning and mixing component (6) is rotatably arranged at the end of the top frame (4), and the double-cone cleaning and mixing component (6) is fixed to the end of the swing arm (5). A winding shaft component (7) is fixed to the top of the diversion pipe (3). A transmission component (8) is arranged on the top frame (4). When the top frame (4) rotates and cooperates with the winding shaft component (7), the double-cone cleaning and mixing component (6) is driven by the transmission component (8) to stir the sewage in the mixing area and alternately clean the inner side of the outer tank body (1) and the outer conical surface of the diversion pipe (3); The double-cone cleaning and mixing component (6) includes a fixed rod (61). The fixed rod (61) is fixed to the end of the swing arm (5). A cylinder (62) is fixed to the bottom end of the fixed rod (61). Annularly distributed blades (63) are fixed to the cylindrical surface of the cylinder (62). The blades (63) are spiral-shaped, and the radial width of the blades (63) gradually decreases from top to bottom; The winding shaft component (7) includes a fixed shaft (72). The top end of the fixed shaft (72) extends into the top frame (4) and is fixed with a toothed disc (71). The fixed shaft (72) is rotatably connected to the top frame (4). The bottom end of the fixed shaft (72) extends out of the top frame (4) and is fixed with a filter cylinder (73). The filter cylinder (73) is fixed to the top of the diversion pipe (3) and is communicated with the pipe cavity of the diversion pipe (3). The filter cylinder (73) is cylindrical, and a number of uniformly distributed through holes (731) are formed in the cylindrical surface. A filter screen (732) is fixed in the through holes (731). The pipe cavity of the filter cylinder (73) is communicated with the inner cavity of the outer tank body (1) through the through holes (731); A sewage discharge pipe (12) communicated with the inner cavity of the diversion pipe (3) is fixed to the bottom of the outer tank body (1). A water inlet pipe (11) communicated with the pipe cavity of the sewage discharge pipe (12) is fixed to the side wall of the sewage discharge pipe (12).

2. An efficient sewage treatment evaporator according to claim 1, characterized in that: The transmission component (8) includes a first rotating shaft (81). The first rotating shaft (81) is rotatably connected to the top frame (4). The top end of the first rotating shaft (81) extends into the top frame (4) and is fixed with a first gear (82). The first gear (82) meshes with the toothed disc (71). The bottom end of the first rotating shaft (81) extends out of the top frame (4) and is fixed with a second gear (83).

3. An efficient sewage treatment evaporator according to claim 2, characterized in that: One end of the swing arm (5) far from the double-cone cleaning and stirring member (6) is fixedly connected with a second rotating shaft (84). The top end of the second rotating shaft (84) is rotationally connected with the top frame (4). A third gear (85) is fixed on the outer side of the second rotating shaft (84), and the third gear (85) is meshed with the second gear (83).

4. An efficient sewage treatment evaporator according to claim 1, characterized in that: A heating pipe (31) is fixed on the inner side of the bottom of the diversion pipe (3). The heating pipe (31) is adapted to the taper of the diversion pipe (3) and is spirally arranged.

5. An efficient sewage treatment evaporator according to claim 1, characterized in that: A steam outlet pipe (13) communicating with the inner cavity of the outer tank body (1) is fixed on the top of the outer tank body (1).

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