A heat exchange unit for sewage treatment

Abstract

The present application relates to a heat exchange unit for sewage treatment, which belongs to the field of sewage treatment technology, and includes a frame, a tank, a sewage inlet, a sewage outlet, a heat exchange pipe and a cleaning mechanism. The tank is arranged on the frame, and a water inlet pipe and a water outlet pipe are arranged on the tank; the sewage inlet is arranged on the tank and is used for sewage to flow in, and the sewage outlet is arranged on the tank and is used for sewage to flow out; the heat exchange pipe is arranged in the tank, one end of the heat exchange pipe is connected with the sewage inlet, and the other end is connected with the sewage outlet; the cleaning mechanism is arranged on the sewage inlet, and the cleaning mechanism includes a turntable, an air pump, an air delivery pipe and a telescopic member, the turntable is arranged in the sewage inlet, the air pump is arranged on the frame, the air delivery pipe is connected to the air pump, the air delivery pipe is connected to the turntable and is used to dock with the heat exchange pipe, and the telescopic member is arranged on the sewage inlet and is used to drive the turntable to slide in the direction close to the tank. The present application has the effect of improving the heat exchange efficiency of sewage.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment technology, and in particular to a heat exchange unit for sewage treatment. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a certain water body or reuse. In the sewage treatment process, a heat exchanger is usually used to exchange energy with the sewage to keep the water body at a certain temperature, enhance the decomposition ability of microorganisms in the water body, and facilitate the purification of sewage.

[0003] At present, sewage is usually heated by a pipe heater. The sewage is passed into the heat exchange tube in the pipe heater, and hot water is passed into the pipe heater to cover the heat exchange tube. The hot water can exchange heat with the heating tube, thereby heating the sewage in the heat exchange tube. However, sewage usually contains more impurities. After the sewage is exchanged with hot water, the impurities in the sewage are easily scaled by heat, resulting in a reduction in the inner diameter of the heat exchange tube, or even clogging the heat exchange tube, affecting the flow efficiency of the sewage, and further affecting the heat exchange efficiency of the sewage. Summary of the invention

[0004] In order to improve the heat exchange efficiency of sewage, the present application provides a heat exchange unit for sewage treatment.

[0005] The heat exchange unit for sewage treatment provided in this application adopts the following technical solution:

[0006] A heat exchange unit for sewage treatment comprises a frame, a tank body, a sewage inlet, a sewage outlet, a heat exchange pipe and a cleaning mechanism, the tank body is arranged on the frame, and a water inlet pipe and a water outlet pipe are arranged on the tank body; the sewage inlet is arranged on the tank body and is used for sewage to flow in, and the sewage outlet is arranged on the tank body and is used for sewage to flow out; the heat exchange pipe is arranged in the tank body, one end of the heat exchange pipe is connected with the sewage inlet, and the other end is connected with the sewage outlet; the cleaning mechanism is arranged on the sewage inlet and is used to drive impurities in the heat exchange pipe to enter the sewage outlet, and the cleaning mechanism comprises a turntable, an air pump, an air delivery pipe and a telescopic member, the turntable is arranged in the sewage inlet, the air pump is arranged on the frame, the air delivery pipe is connected and arranged on the air pump, the air delivery pipe is connected and arranged on the turntable and is used to dock with the heat exchange pipe, and the telescopic member is arranged on the sewage inlet and is used to drive the turntable to slide in a direction close to the tank body.

[0007] By adopting the above technical scheme, the sewage first enters the sewage inlet, then enters the heat exchange tube from the sewage inlet, and then flows out from the heat exchange tube into the sewage outlet. At the same time, hot water enters the tank from the water inlet pipe. After the hot water exchanges heat with the heat exchange tube, it flows out from the water outlet pipe. The heat exchange tube then exchanges heat with the sewage to achieve heating of the sewage. When blockage occurs in the heat exchange tube, the staff drives the turntable to move toward the tank through the telescopic part. The turntable drives the gas pipe to connect with the heat exchange tube, and then starts the air pump. The high-pressure gas generated by the air pump is input into the heat exchange tube from the gas pipe, and the impurities blocked in the heat exchange tube are cleared to the sewage outlet, thereby improving the transportation efficiency of sewage in the heat exchange tube, thereby effectively improving the heat exchange efficiency of sewage.

[0008] Optionally, a plurality of heat exchange tubes are arranged in the tank body, and the plurality of heat exchange tubes are distributed in an array into multiple groups. A plurality of gas pipes are arranged on the turntable, and the plurality of gas pipes are used to connect with a plurality of heat exchange tubes in a group. The turntable is rotatably arranged in the sewage inlet part, and a rotating component for driving the turntable to rotate is arranged on the sewage inlet part.

[0009] By adopting the above technical scheme, the sewage in the sewage inlet part is diverted to several heat exchange tubes, and the several heat exchange tubes then exchange heat with hot water, thereby increasing the contact area between the heat exchange tubes and the hot water, and thus increasing the heat exchange effect of the heat exchange between hot water and sewage; and when some of the heat exchange tubes in one group are blocked, the staff drives the turntable to rotate through the rotating component, so that the air pipes on the turntable connect to the heat exchange tubes of different groups, so as to realize the separate unblocking of each group of heat exchange tubes, and the heat exchange tubes of other groups can continue to transport sewage, thereby reducing the impact of the blockage of the heat exchange tubes on the sewage heat exchange.

[0010] Optionally, the telescopic member includes a cylinder, which is arranged on the sewage inlet portion, and a piston rod of the cylinder is coaxially connected to the turntable.

[0011] By adopting the above technical solution, the staff can control the extension of the piston rod of the cylinder to drive the turntable to move towards the tank body, and control the retraction of the piston rod of the cylinder to move the turntable away from the tank body, thereby preventing the turntable from affecting the sewage input heat exchange pipe.

[0012] Optionally, the rotating assembly includes a rotating motor, a mounting disk, a worm and a worm wheel, the rotating motor is arranged on the sewage inlet part, the mounting disk is rotatably arranged on the sewage inlet part, the worm is coaxially arranged on the output shaft of the rotating motor, the worm wheel is coaxially arranged on the mounting disk, the worm wheel is meshed with the worm, and the cylinder is arranged on the mounting disk.

[0013] By adopting the above technical solution, the staff starts the rotating motor, the rotating motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the mounting plate to rotate, the mounting plate drives the cylinder to rotate, and the cylinder can drive the turntable to rotate. By controlling the rotation angle of the output shaft of the rotating motor, the air pipe on the turntable and different groups of heat exchange tubes can be aligned.

[0014] Optionally, the cleaning mechanism also includes a flow meter and a control panel, wherein one flow meter is provided on the sewage inlet and one flow meter is provided on the sewage outlet, and both flow meters are electrically connected to the control panel, and the control panel is provided on the sewage inlet, and the control panel is electrically connected to the cylinder, air pump and rotating motor.

[0015] By adopting the above technical scheme, two flow meters detect the flow of sewage in the sewage inlet and the sewage outlet, and then send the detected sewage flow to the control panel, which compares the received sewage flow. When the control panel detects that the sewage flow in the sewage outlet is less than the sewage flow in the sewage inlet and the difference exceeds the set range, the control panel controls the piston rod of the cylinder to extend, and then controls the air pump to start, so as to dredge a group of heat exchange tubes; if the sewage flow detected by the flow meter in the sewage outlet is still less than the sewage flow detected by the flow meter in the sewage inlet, the control panel controls the rotation motor to start, drives the turntable to rotate to the next group of heat exchange tubes, and dredges the next group of heat exchange tubes until the control panel detects that the difference between the sewage flow in the sewage outlet and the sewage flow in the sewage inlet returns to the set range, thereby effectively improving the convenience of the staff in detecting the sewage flow in the sewage inlet and the sewage outlet, and being able to dredge the heat exchange tubes according to the detection results of the flow meter.

[0016] Optionally, a nozzle is provided on the gas pipe, and a diameter of the nozzle gradually decreases from an end close to the gas pipe to an end far from the gas pipe.

[0017] By adopting the above technical solution, when the turntable moves toward the tank body, the nozzle is first inserted into the heat exchange tube, making it easier for the gas pipe to dock with the heat exchange tube, and the nozzle increases the pressure of the gas when it enters the heat exchange tube from the gas pipe, thereby enhancing the unblocking effect on the heat exchange tube, and the nozzle with a smaller opening can reduce the amount of sewage entering the nozzle, thereby reducing the possibility of sewage flowing into the gas pipe.

[0018] Optionally, an annular groove is provided on the inner wall of the sewage inlet part in a circumferential direction, and a slider is provided on the turntable. The slider is slidably arranged in the annular groove, and a plurality of limiting grooves are provided on the side wall of the annular groove in a direction toward the tank body. When several of the gas pipes are opposite to a group of heat exchange pipes, the slider is opposite to the opening of the limiting groove.

[0019] By adopting the above technical solution, when the turntable rotates in the sewage inlet part, the slider slides in the annular groove, thereby improving the stability of the turntable during rotation; the air supply pipe on the turntable is directly opposite to a group of heat exchange tubes, and the slider is directly opposite to the opening of a limit groove. At this time, when the turntable moves toward the direction close to the tank body, the slider slides in the limit groove, thereby improving the stability of the turntable in the process of moving toward the tank body, thereby increasing the accuracy of the docking between the nozzle and the heat exchange tube.

[0020] Optionally, it also includes a heating box, a water pump and a filtering mechanism, wherein the heating box is arranged on the frame and is used to heat water, the water pump is connected to the heating box, the water inlet pipe is connected to the water pump, and the water outlet pipe is connected to the heating box; the filtering mechanism is arranged on the heating box and is used to filter the water entering the water pump.

[0021] By adopting the above technical solution, the water pump draws the hot water in the heating box into the water inlet pipe, the hot water enters the tank body from the water inlet pipe, and after the hot water exchanges heat with the heat exchange tube, it flows into the heating box from the water outlet pipe for heating, thereby realizing the recycling of water resources, and the filtering mechanism filters the water entering the water pump to reduce the impurities in the hot water from entering the water pump or the tank body.

[0022] Optionally, the filtering mechanism includes a filter screen and a cleaning component, the filter screen is arranged on the side wall of the connection point between the heating box and the water pump, and the cleaning component is arranged in the heating box and is used to clean the filter screen.

[0023] By adopting the above technical solution, the hot water in the hot water tank is pumped into the water pump after passing through the filter, and the filter filters the impurities in the hot water. When there are many impurities accumulated on the filter, the cleaning component can clean the impurities adhered to the filter to prevent the impurities on the filter from affecting the extraction of hot water by the water pump.

[0024] Optionally, the cleaning assembly includes a brush, a screw and a reciprocating motor, the brush is slidably set on the inner wall of the heating box, the brush abuts against the filter, the screw is rotatably set on the inner wall of the heating box, the screw is threadedly connected to the brush, the reciprocating motor is set on the heating box, and the output shaft of the reciprocating motor is coaxially connected to the screw.

[0025] By adopting the above technical solution, the staff starts the reciprocating motor, and the output shaft of the reciprocating motor drives the screw to rotate, and the screw can drive the brush to slide on the inner wall of the heating box. By controlling the forward and reverse rotation of the output shaft of the reciprocating motor, the brush can slide back and forth on the filter net, brushing the impurities accumulated on the filter net off the filter net.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When the heat exchange tube is blocked, the staff drives the turntable to move closer to the tank through the telescopic parts. The turntable drives the gas pipe to connect with the heat exchange tube, and then starts the air pump. The high-pressure gas generated by the air pump is input into the heat exchange tube from the gas pipe, and the debris blocked in the heat exchange tube is cleared to the sewage outlet, thereby improving the transportation efficiency of sewage in the heat exchange tube, thereby effectively improving the heat exchange efficiency of sewage;

[0028] 2. The staff drives the turntable to rotate by rotating the assembly, so that the gas pipes on the turntable are connected to different groups of heat exchange tubes, so that each group of heat exchange tubes can be unblocked separately, and the heat exchange tubes of other groups can continue to transport sewage, reducing the impact of heat exchange tube blockage on sewage heat exchange;

[0029] 3. When the turntable rotates in the sewage inlet, the slider slides in the annular groove, which improves the stability of the turntable during rotation; when the turntable moves toward the tank body, the slider slides in the limit groove, which improves the stability of the turntable during the movement toward the tank body, thereby increasing the accuracy of the docking between the nozzle and the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a heat exchanger unit for sewage treatment according to an embodiment of the present application.

[0031] Figure 2 It is a partial cross-sectional view of the sewage inlet, tank body, sewage outlet and heating box of an embodiment of the present application.

[0032] Figure 3 It is a partial cross-sectional view from another perspective of the sewage inlet, tank body, sewage outlet and heating box of an embodiment of the present application.

[0033] Figure 4 yes Figure 2 A partial enlarged schematic diagram of part A.

[0034] Figure 5 yes Figure 2 A partial enlarged schematic diagram of part B.

[0035] Figure 6 yes Figure 3 A partial enlarged schematic diagram of part C in the middle.

[0036] Figure numerals: 1. frame; 2. tank body; 3. sewage inlet; 31. annular groove; 32. limiting groove; 4. sewage outlet; 5. heat exchange tube; 6. cleaning mechanism; 61. turntable; 62. air pump; 63. air pipe; 64. telescopic member; 641. cylinder; 65. flow meter; 66. control panel; 7. water inlet pipe; 8. water outlet pipe; 9. rotating assembly; 91. rotating motor; 92. mounting plate; 93. worm; 94. worm gear; 10. nozzle; 11. slider; 12. heating box; 13. water pump; 14. filtering mechanism; 141. filter screen; 142. cleaning assembly; 1421. brush; 1422. lead screw; 1433. reciprocating motor; 15. baffle; 16. guide rod. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] The embodiment of the present application discloses a heat exchange unit for sewage treatment.

[0039] Reference Figure 1 , Figure 2 The heat exchange unit for sewage treatment includes a frame 1, a tank body 2, a sewage inlet part 3, a sewage outlet part 4, a heat exchange pipe 5, a cleaning mechanism 6, a heating box 12, a water pump 13 and a filtering mechanism 14.

[0040] Reference Figure 1 , Figure 2 The tank body 2 is mounted on the frame 1, and a water inlet pipe 7 for hot water to flow in is connected to the tank body 2, and a water outlet pipe 8 for hot water to flow out after heat exchange is completed is connected to the tank body 2. In this embodiment, the water inlet pipe 7 and the water outlet pipe 8 are distributed at both ends of the tank body 2, so that the hot water entering the tank body 2 can be fully utilized and then discharged from the tank body 2, and the water outlet pipe 8 is located at the bottom of the tank body 2, so that the water in the tank body 2 can be discharged by gravity; the sewage inlet part 3 is connected and installed at the end of the tank body 2, and the sewage inlet part 3 is used to For sewage to flow in, the sewage outlet 4 is connected and installed at the end of the tank body 2 away from the sewage inlet 3, and the sewage outlet 4 is used for sewage to flow out. In the present embodiment, the sewage inlet 3 and the sewage outlet 4 are both pipe bodies with one end open, and the open ends of the sewage inlet 3 and the sewage outlet 4 are flange-connected to the two ends of the tank body 2 respectively, and the sewage inlet 3 and the sewage outlet 4 are both connected and installed with connecting pipes, which is convenient for the staff to connect the sewage pipe for inputting sewage to the sewage inlet 3, and to connect the sewage pipe for outputting heated sewage to the sewage outlet 4.

[0041] Reference Figure 2 , Figure 3, a plurality of heat exchange tubes 5 are installed in the tank body 2, one end of the plurality of heat exchange tubes 5 is connected to the sewage inlet part 3, and the other end is connected to the sewage outlet part 4. In this embodiment, a plurality of baffles 15 are installed in the tank body 2, and the plurality of heat exchange tubes 5 are all penetrated on the baffles 15, and the plurality of baffles 15 are distributed at intervals on the upper and lower side walls of the tank body 2, so that the plurality of baffles 15 can form a channel for hot water flow, so that after the hot water enters the tank body 2, the hot water is forced to be baffled multiple times according to the specified distance of the plurality of baffles 15, and the flow rate of the hot water in the tank body 2 can be increased, thereby improving the heat exchange effect between the hot water and the heat exchange tube 5, and finally improving the heating effect of the sewage in the heat exchange tube 5, and the baffles 15 can also support the plurality of heat exchange tubes 5, and improve the stability of the plurality of heat exchange tubes 5 in the tank body 2.

[0042] The staff passes hot water into the tank body 2 from the water inlet pipe 7, and passes sewage into the sewage inlet part 3 at the same time. The sewage enters the multiple heat exchange tubes 5 from the sewage inlet part 3, and then flows into the sewage outlet part 4 from the heat exchange tubes 5, and is finally output from the sewage outlet part 4. During the transportation of sewage in the heat exchange tubes 5, the hot water exchanges heat with the heat exchange tubes 5, and the heat exchange tubes 5 then exchange heat with the sewage. Finally, the water with a lower temperature after the heat exchange is completed is discharged from the water outlet pipe 8, thereby realizing continuous heating of the sewage; and a plurality of heat exchange tubes 5 increase the contact area between the heat exchange tubes 5 and the hot water, thereby increasing the heat exchange effect of the heat exchange between the hot water and the sewage.

[0043] Reference Figure 1 , Figure 3 , the heating box 12 is installed on the frame 1, and the heating box 12 is used to heat water. The heating box 12 can be an electric heater, an oil heater, etc. In the present embodiment, the heating box 12 is an electric heater with a built-in electric heating plate. When the staff turns on the power connected to the electric heater, the electric heating plate can be energized to generate heat, and the electric heating plate can perform heat exchange with the water; the water pump 13 is connected and installed on the heating box 12, the water inlet pipe 7 is connected to the water outlet end of the water pump 13 through a pipeline, and the water outlet pipe 8 is connected and installed on the heating box 12 through a pipeline; the water pump 13 draws the hot water in the heating box 12 into the water inlet pipe 7, and then enters the tank body 2 through the water inlet pipe 7. The water in the tank body 2 after heat exchange with the heat exchange tube 5 enters the heating box 12 from the water outlet pipe 8, and the heating box 12 heats the water with a lower temperature entering the heating box 12 again, so as to realize the recycling of water resources and reduce the waste of water resources.

[0044] Reference Figure 3 , Figure 4, the filter mechanism 14 is installed on the heating box 12, and the filter mechanism 14 is used to filter the water entering the water pump 13. The filter mechanism 14 includes a filter screen 141 and a cleaning component 142. The filter screen 141 is installed on the inner wall of the heating box 12, and the filter screen 141 is located at the connection between the heating box 12 and the water pump 13. The filter screen 141 can be made of stainless steel mesh, filter cotton, fiber mesh and other materials. In this embodiment, the filter screen 141 is a stainless steel mesh, which has the characteristics of corrosion resistance, high temperature resistance, long service life, easy cleaning and the like; the cleaning component 142 is installed on the heating box 12, and the cleaning component 142 is used to clean the filter screen 141. The cleaning component 142 includes a brush 1421, a lead screw 1422 and a reciprocating electric Machine 1433, the brush 1421 is slidably installed on the inner wall of the connection between the water pump 13 and the heating box 12, and the brush 1421 is in contact with the filter 141. In the present embodiment, a guide round rod 16 is installed on the inner wall of the connection between the water pump 13 and the heating box 12, and the brush 1421 is slidably installed on the guide round rod 16; the lead screw 1422 is rotatably installed on the inner wall of the heating box 12, the lead screw 1422 is parallel to the guide round rod 16, and the lead screw 1422 is threadedly connected with the brush 1421, and the reciprocating motor 1433 is installed on the outer wall of the heating box 12, and the output shaft of the reciprocating motor 1433 extends into the heating box 12 and is coaxially connected with the lead screw 1422. In the present embodiment, the reciprocating motor 1433 is a servo motor.

[0045] When the hot water in the heating box 12 is pumped out by the water pump 13, the filter 141 filters the impurities in the hot water to prevent excessive impurities from entering the water pump 13 and affecting the service life of the water pump 13, and can also reduce the impurities in the hot water entering the tank body 2 to prevent the hot water with more impurities from entering the tank body 2 and causing these impurities to scale on the outer wall of the heat exchange tube 5 and affect the heat exchange effect between the heat exchange tube 5 and the hot water; when there are more impurities adhering to the filter 141, the staff starts the reciprocating motor 1433, and the output of the reciprocating motor 1433 The output shaft drives the lead screw 1422 to rotate, thereby driving the brush 1421 to slide from one end of the filter 141 to the other end of the filter 141, and then controlling the output shaft of the reciprocating motor 1433 to reverse, so that the brush 1421 can slide back and forth at both ends of the filter 141. During the sliding process of the filter 141, the impurities adhered to the filter 141 can be brushed off the filter 141 to prevent the filter 141 from being blocked by excessive impurities adhered to the filter 141, thereby ensuring the efficiency of the water pump 13 in extracting hot water in the heating box 12.

[0046] Reference Figure 2 , Figure 3, a plurality of heat exchange tubes 5 are arranged in an array in the tank body 2 into a plurality of groups. In this embodiment, a plurality of heat exchange tubes 5 are arranged in an array in the tank body 2 into two groups. A cleaning mechanism 6 is installed on the sewage inlet portion 3. The cleaning mechanism 6 is used to drive the impurities in the heat exchange tubes 5 into the sewage outlet portion 4. The cleaning mechanism 6 includes a turntable 61, an air pump 62, an air delivery pipe 63, a telescopic member 64, a flow meter 65 and a control panel 66. Figure 5 , an annular groove 31 is provided on the inner wall of the sewage inlet portion 3 in the circumferential direction, a slider 11 is installed on the turntable 61, the slider 11 is slidably installed in the annular groove 31, and a plurality of limiting grooves 32 are provided on the side wall of the annular groove 31 and connected to one end of the tank body 2. In the present embodiment, the annular groove 31 and the limiting groove 32 are both dovetail grooves, and the slider 11 is a dovetail block engaged with the dovetail groove, which improves the stability of the slider 11 when sliding, and further improves the stability of the turntable 61 when moving. In the present embodiment, two limiting grooves 32 are provided on the inner wall of the tank body 2. When a plurality of gas pipes 63 are opposite to a group of heat exchange pipes 5, the slider 11 is opposite to the opening of one of the limiting grooves 32. When a plurality of gas pipes 63 are opposite to another group of heat exchange pipes 5, the slider 11 can be opposite to the opening of another limiting groove 32.

[0047] The air pump 62 is installed on the frame 1, and a plurality of air delivery pipes 63 are connected and installed on the turntable 61, and the plurality of air delivery pipes 63 are all connected to the air pump 62. In this embodiment, after the air delivery pipe 63 extends to the turntable 61, the air delivery pipe 63 is connected and distributed in a plurality on the turntable 61, and a section of the air delivery pipe 63 located in the sewage inlet 3 is a corrugated pipe, which can be extended and rotated with the movement of the turntable 61, and the air delivery pipe 63 is penetrated at the side wall of the sewage inlet 3 and is installed with a sealing rubber ring to increase the tightness between the air delivery pipe 63 and the side wall of the sewage inlet 3; and in this embodiment, the turntable 61 is a semicircular disk, and the plurality of air delivery pipes 63 on the turntable 61 are used to connect with a plurality of heat exchange pipes 5 in one group, and when the turntable 61 rotates to the next group of air delivery pipes 63, the plurality of air delivery pipes 63 on the turntable 61 can be connected with a plurality of heat exchange pipes 5 in another group;

[0048] Reference Figure 2 , Figure 5, a nozzle 10 is installed at one end of the gas pipe 63 close to the tank body 2, and the diameter of the nozzle 10 gradually increases from the end away from the gas pipe 63 to the end close to the gas pipe 63. In this embodiment, a one-way valve is installed in the nozzle 10, so that high-pressure gas can be sprayed out from the nozzle 10, but water can be blocked from entering the gas pipe 63 from the nozzle 10; and in this embodiment, rubber is installed on the outer wall of the nozzle 10, so that when the nozzle 10 is inserted into the heat exchange tube 5, the outer wall of the nozzle 10 is more tightly connected to the heat exchange tube 5; when the turntable 61 moves toward the direction close to the tank body 2, the nozzle 10 is first inserted into the heat exchange tube 5, so that the gas pipe 63 is easier to dock with the heat exchange tube 5, and the nozzle 10 increases the pressure of the gas when it enters the heat exchange tube 5 from the gas pipe 63, thereby enhancing the dredging effect on the heat exchange tube 5, and the nozzle 10 with a smaller opening can reduce the amount of sewage entering the nozzle 10, thereby reducing the possibility of sewage flowing into the gas pipe 63.

[0049] Reference Figure 3 , Figure 6 A rotating assembly 9 is installed on the sewage inlet 3, and the rotating assembly 9 is used to drive the turntable 61 to rotate. The rotating assembly 9 includes a rotating motor 91, a mounting plate 92, a worm 93 and a worm wheel 94. The rotating motor 91 is installed on the outer wall of the sewage inlet 3. In this embodiment, the rotating motor 91 is a servo motor; the mounting plate 92 is rotatably installed on the outer wall of the sewage inlet 3, the worm 93 is coaxially installed on the output shaft of the rotating motor 91, and the worm wheel 94 is coaxially installed on the mounting plate 92. The worm wheel 94 is meshed with the worm 93. Through the self-locking mechanism of the worm wheel 94 and the worm 93, the mounting plate 92 is prevented from rotating due to mechanical vibration, the stability of the mounting plate 92 is improved, and then the turntable is improved. The stability of 61; the telescopic member 64 is installed on the mounting plate 92, and the telescopic member 64 is used to drive the turntable 61 to move toward the direction close to the tank body 2. The telescopic member 64 includes a cylinder 641, and the cylinder 641 is coaxially mounted on the mounting plate 92 by bolts. The piston rod of the cylinder 641 is slidably penetrated on the mounting plate 92, and the piston rod of the cylinder 641 is slidably and rotatably penetrated on the side wall of the sewage inlet part 3, and the piston rod of the cylinder 641 extends into the sewage inlet part 3 and is coaxially connected with the turntable 61. In the present embodiment, the piston rod of the cylinder 641 is penetrated at the side wall of the sewage inlet part 3 and is also installed with a rubber sealing ring to increase the sealing between the piston rod of the cylinder 641 and the side wall of the sewage inlet part 3.

[0050] A flow meter 65 is installed on both the sewage inlet 3 and the sewage outlet 4. The flow meter 65 is used to detect the sewage flow in the sewage inlet 3 and the sewage outlet 4. The two flow meters 65 are electrically connected to the control panel 66. The flow meter 65 can be a differential pressure flow meter, a rotor flow meter, an electromagnetic flow meter, an ultrasonic flow meter, etc. In the present embodiment, the flow meter 65 is a differential pressure flow meter; the control panel 66 is installed on the tank body 2, and the control panel 66 is electrically connected to the cylinder 641, the air pump 62 and the rotating motor 91.

[0051] During the heat exchange of sewage in the heat exchange tube 5, the two flow meters 65 detect the sewage flow in the sewage inlet 3 and the sewage flow in the sewage outlet 4 respectively, and then send the detected sewage flow in the sewage inlet 3 and the sewage flow in the sewage outlet 4 to the control panel 66. After receiving the sewage flow in the sewage inlet 3 and the sewage flow in the sewage outlet 4, the control panel 66 compares the sewage flow in the sewage inlet 3 with the sewage flow in the sewage outlet 4. When the control panel 66 detects that the difference between the sewage flow in the sewage outlet 4 and the sewage flow in the sewage inlet 3 exceeds the set range, part of the heat exchange tube 5 is The impurities in the sewage are blocked, and the control panel 66 controls the piston rod of the cylinder 641 to extend, so that the turntable 61 slides in the direction close to the tank body 2, so that the multiple nozzles 10 can be respectively connected to the multiple heat exchange tubes 5 in a group, and then the control panel 66 controls the air pump 62 to start, and the high-pressure gas generated by the air pump 62 enters the nozzle 10 from the air pipe 63, and is sprayed from the nozzle 10 to the heat exchange tube 5, thereby flushing the impurities blocked in the heat exchange tube 5 into the sewage outlet 4 for discharge, and then the control panel 66 controls the air pump 62 to stop, and then controls the piston rod of the cylinder 641 to retract, so that the turntable 61 drives the slider 11 to retreat to the ring groove 3 1; after the group of heat exchange tubes 5 are unblocked, if the sewage flow rate detected by the flow meter 65 on the sewage outlet 4 received by the control panel 66 is less than the sewage flow rate detected by the flow meter 65 on the sewage inlet 3, the difference still exceeds the set range, the control panel 66 controls the rotating motor 91 to rotate, the rotating motor 91 drives the worm 93 to rotate, the worm 93 drives the worm gear 94 to rotate, the worm gear 94 can drive the mounting plate 92 to rotate, the mounting plate 92 drives the cylinder 641 to rotate, the cylinder 641 drives the rotating disk 61 to rotate, so that the multiple nozzles 10 on the rotating disk 61 are aimed at the multiple heat exchange tubes 5 of another group, at this time the rotating disk The slider 11 on 61 is aligned with another limit groove 32, and then the control panel 66 controls the piston rod of the cylinder 641 to extend, so that the multiple nozzles 10 on the turntable 61 are connected to the multiple heat exchange tubes 5 of another group, and the control panel 66 controls the air pump 62 to start, and the multiple heat exchange tubes 5 of another group are unblocked, thereby improving the transportation efficiency of sewage in the heat exchange tubes 5, thereby effectively improving the heat exchange efficiency of sewage; and by unblocking the heat exchange tubes 5 in groups, when one group of heat exchange tubes 5 is unblocked, the other group of heat exchange tubes 5 can continue to transport sewage, reducing the impact of the heat exchange tubes 5 on sewage heating when they are blocked.

[0052] The implementation principle of a heat exchange unit for sewage treatment in the embodiment of the present application is as follows: the staff passes the sewage into the sewage inlet part 3, and the sewage then flows from the sewage inlet part 3 into a plurality of heat exchange tubes 5, and then flows from the heat exchange tubes 5 into the sewage outlet part 4 for discharge. During the process, the water pump 13 draws the hot water in the heating box 12 from the water inlet pipe 7 into the tank body 2, and the hot water exchanges heat with the heat exchange tubes 5, and the heat exchange tubes 5 then exchange heat with the sewage to achieve heating of the sewage, and then the sewage with a lower temperature flows from the water outlet pipe 8 into the heating box 12 for reheating, so that the water source is reused; when the control panel 66 detects that the difference between the sewage flow rate in the sewage outlet part 4 and the sewage flow rate in the sewage inlet part 3 exceeds the set range, the control panel 66 controls the piston rod of the cylinder 641 to extend, and the turntable 61 slides in the direction close to the tank body 2, so that the multiple nozzles 10 are respectively connected to the multiple heat exchange tubes 5 in a group, and then the control panel 66 controls the air pump 62 is started, and the high-pressure gas generated by the air pump 62 is sprayed from the nozzle 10 into the heat exchange tube 5, thereby flushing the impurities blocked in the heat exchange tube 5 into the sewage outlet 4 for discharge, and the control panel 66 controls the turntable 61 to reset. If the difference between the sewage flow rate in the sewage outlet 4 received by the control panel 66 and the sewage flow rate in the sewage inlet 3 is still beyond the set range, the control panel 66 controls the rotating motor 91 to rotate, so that the turntable 61 drives the multiple nozzles 10 to aim at another group of multiple heat exchange tubes 5, and the control panel 66 drives the cylinder 641 and the air pump 62 to dredge the multiple heat exchange tubes 5 of the other group, thereby improving the transportation efficiency of the sewage in the heat exchange tube 5, and through the group dredging method, when one group of heat exchange tubes 5 is dredged, the other group of heat exchange tubes 5 can continue to transport sewage, thereby reducing the impact of the blockage of the heat exchange tubes 5 on the heating of sewage, and effectively improving the heat exchange efficiency of the sewage.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat exchange unit for sewage treatment, characterized in that: The invention comprises a frame (1), a tank body (2), a sewage inlet (3), a sewage outlet (4), a heat exchange tube (5) and a cleaning mechanism (6), wherein the tank body (2) is arranged on the frame (1), and a water inlet tube (7) and a water outlet tube (8) are arranged on the tank body (2); the sewage inlet (3) is arranged on the tank body (2) and is used for sewage to flow in, and the sewage outlet (4) is arranged on the tank body (2) and is used for sewage to flow out; the heat exchange tube (5) is arranged in the tank body (2), and one end of the heat exchange tube (5) is connected to the sewage inlet (3) and the other end is connected to the sewage outlet (4); the cleaning mechanism (6) is arranged on the sewage inlet ( The cleaning mechanism (6) is arranged on the waste inlet (3) and is used to drive impurities in the heat exchange tube (5) into the waste outlet (4), the cleaning mechanism (6) comprising a turntable (61), an air pump (62), an air pipe (63) and a telescopic member (64), the turntable (61) being arranged in the waste inlet (3), the air pump (62) being arranged on the frame (1), the air pipe (63) being arranged in communication with the air pump (62), the air pipe (63) being arranged in communication with the turntable (61) and being used to dock with the heat exchange tube (5), and the telescopic member (64) being arranged on the waste inlet (3) and being used to drive the turntable (61) to slide in a direction close to the tank body (2); A plurality of the heat exchange tubes (5) are arranged in the tank body (2), and the plurality of the heat exchange tubes (5) are arranged in an array to form a plurality of groups. A plurality of the gas delivery pipes (63) are arranged on the turntable (61), and the plurality of the gas delivery pipes (63) are used to be connected to a plurality of the heat exchange tubes (5) in a group. The turntable (61) is rotatably arranged in the sewage inlet portion (3), and a rotating assembly (9) for driving the turntable (61) to rotate is arranged on the sewage inlet portion (3).

2. A heat exchange unit for sewage treatment according to claim 1, characterized in that: The telescopic member (64) comprises a cylinder (641), the cylinder (641) being arranged on the sewage inlet portion (3), and the piston rod of the cylinder (641) being coaxially connected to the rotating disk (61).

3. A heat exchange unit for sewage treatment according to claim 2, characterized in that: The rotating assembly (9) comprises a rotating motor (91), a mounting plate (92), a worm (93) and a worm wheel (94); the rotating motor (91) is arranged on the sewage inlet portion (3); the mounting plate (92) is rotatably arranged on the sewage inlet portion (3); the worm (93) is coaxially arranged on the output shaft of the rotating motor (91); the worm wheel (94) is coaxially arranged on the mounting plate (92); the worm wheel (94) meshes with the worm (93); and the cylinder (641) is arranged on the mounting plate (92).

4. A heat exchange unit for sewage treatment according to claim 3, characterized in that: The cleaning mechanism (6) further comprises a flow meter (65) and a control panel (66); one flow meter (65) is provided on each of the sewage inlet (3) and the sewage outlet (4); both flow meters (65) are electrically connected to the control panel (66); the control panel (66) is provided on the sewage inlet (3); and the control panel (66) is electrically connected to the cylinder (641), the air pump (62) and the rotary motor (91).

5. A heat exchange unit for sewage treatment according to claim 1, characterized in that: The gas delivery pipe (63) is provided with a nozzle (10), and the diameter of the nozzle (10) gradually decreases from an end close to the gas delivery pipe (63) to an end far from the gas delivery pipe (63).

6. A heat exchange unit for sewage treatment according to claim 1, characterized in that: An annular groove (31) is provided on the inner wall of the sewage inlet portion (3) in a circumferential direction. A slider (11) is provided on the rotating disk (61). The slider (11) is slidably arranged in the annular groove (31). A plurality of limiting grooves (32) are provided on the side wall of the annular groove (31) in a direction toward the tank body (2). When a plurality of the gas delivery pipes (63) are directly opposite to a group of heat exchange pipes (5), the slider (11) is directly opposite to the openings of the limiting grooves (32).

7. A heat exchange unit for sewage treatment according to claim 1, characterized in that: It also comprises a heating box (12), a water pump (13) and a filtering mechanism (14); the heating box (12) is arranged on the frame (1) and is used to heat water; the water pump (13) is arranged in communication with the heating box (12); the water inlet pipe (7) is in communication with the water pump (13); the water outlet pipe (8) is arranged in communication with the heating box (12); and the filtering mechanism (14) is arranged on the heating box (12) and is used to filter water entering the water pump (13).

8. A heat exchange unit for sewage treatment according to claim 7, characterized in that: The filtering mechanism (14) comprises a filtering screen (141) and a cleaning component (142); the filtering screen (141) is arranged on the side wall of the connection point between the heating box (12) and the water pump (13); the cleaning component (142) is arranged in the heating box (12) and is used to clean the filtering screen (141).

9. A heat exchange unit for sewage treatment according to claim 8, characterized in that: The cleaning assembly (142) comprises a brush (1421), a lead screw (1422) and a reciprocating motor (1433); the brush (1421) is slidably arranged on the inner wall of the heating box (12); the brush (1421) abuts against the filter screen (141); the lead screw (1422) is rotatably arranged on the inner wall of the heating box (12); the lead screw (1422) is threadedly connected to the brush (1421); the reciprocating motor (1433) is arranged on the heating box (12); and the output shaft of the reciprocating motor (1433) is coaxially connected to the lead screw (1422).

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