A sewage direct-inlet heat pump anti-blocking device and anti-blocking method

Abstract

The present invention belongs to the technical field of sewage treatment, and in particular, is a device and method for preventing blocking of a sewage direct heat pump, comprising a pump body for sewage treatment, a movable cavity is provided inside the pump body, a sewage inlet pipe extending to the inside of the movable cavity is fixedly connected to one side of the pump body, a sewage treatment mechanism is arranged on the side of the sewage inlet pipe inside the movable cavity, a backwashing mechanism is arranged on the lower surface of the pump body, and a graded discharge mechanism is arranged on one side of the sewage treatment mechanism. The present invention works by driving a motor, and under the joint of a universal joint, two stirring shafts are rotated inside a discharge pipe, driving a spiral conveying sheet and a stirring rod to rotate, and when the stirring rod rotates, the backwashing liquid in the filter cage is stirred, so that the centrifugal force of the water flow drives the debris to desorb and fall into the inside of the discharge pipe, and then the spiral conveying sheet rotates inside the discharge pipe, thereby conveying the debris falling into the discharge pipe, effectively solving the problem that the sewage direct heat pump is easy to be blocked.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to an anti-blocking device and an anti-blocking method for a sewage direct-inlet heat pump. Background Art

[0002] A sewage direct heat pump is a device that uses the thermal energy of sewage for heating or cooling. The sewage direct heat pump achieves heating or cooling by extracting heat from sewage or releasing heat into sewage. Its basic principle is similar to that of a traditional heat pump, but it uses the thermal energy of sewage.

[0003] When utilizing sewage, it utilizes anti-blocking technology to filter the sewage and then directly enter the heat pump unit, which is a direct utilization of sewage. The heat source temperature entering the heat pump unit is relatively high, and the system energy efficiency is relatively high; however, in actual applications, the anti-blocking structure needs to be cleaned frequently to avoid blockage problems, thereby reducing the effective operation of the system. However, the cleaning of the prior art is simply to flush the anti-blocking mechanism with liquid to avoid the adhesion of impurities. However, if a small amount of particulate matter is not discharged from the pump body in time, it will still cause the pump body to be blocked after a long period of accumulation. Therefore, the present invention solves the shortcomings of the above technical problems. Summary of the invention

[0004] Based on the above existing technical problems, the present invention proposes an anti-blocking device and an anti-blocking method for a sewage direct-inlet heat pump.

[0005] The present invention proposes an anti-blocking device for a sewage direct-inlet heat pump, comprising a pump body for absorbing and treating raw sewage, a movable cavity being opened inside the pump body, a sewage inlet pipe extending to the inside of the movable cavity being fixedly connected to one side of the pump body, a sewage treatment mechanism being arranged on one side of the sewage inlet pipe located inside the movable cavity, a backwashing mechanism being arranged on the lower surface of the pump body, and a discharge processing mechanism being arranged on one side of the sewage treatment mechanism.

[0006] The sewage treatment mechanism removes suspended matter and sediment from the sewage entering the movable cavity from the sewage inlet pipe, and removes debris when the backwash mechanism flushes the inside of the movable cavity.

[0007] The backwash mechanism utilizes the treated sewage to flush the interior of the movable cavity to remove accumulated impurities.

[0008] The discharge treatment mechanism selectively absorbs the treated sewage according to the source and characteristics of the sewage and discharges it from the pump body after filtering again, and then enters the heat pump unit.

[0009] Preferably, the discharge processing mechanism comprises a mounting frame fixedly mounted inside the movable cavity, a filter cage is fixedly connected to the outer surface of the mounting frame, and one end of the sewage inlet pipe is fixedly extended to the inside of the filter cage.

[0010] Through the above technical scheme, a sewage pretreatment device is arranged in front of the heat pump system to prevent the heat pump system from being blocked. In order to directly pretreat the sewage in the sewage inlet pipe, the outlet of the sewage inlet pipe is received by a filter cage, so that the debris particles are retained inside the filter cage, and the treated sewage flows into the movable cavity.

[0011] Preferably, the sewage treatment mechanism also includes an overflow plate fixedly connected to the bottom wall of the movable cavity, and the lower surface of the movable cavity accounts for half of its flat area and is penetrated by filter holes, and the overflow plate and the solid area of ​​the movable cavity form an L-shaped overflow interval.

[0012] Through the above technical solution, in order to remove the sediment in the sewage, the area inside the active cavity is divided into two by the overflow plate, and the top of the overflow plate exceeds the top of the filter cage. Therefore, after controlling the sewage entry speed, the sewage filtered out of the filter cage flows to the left side of the overflow plate, and overflows to the right side of the overflow plate after the water level line rises, and then the left side of the overflow plate can realize the sedimentation treatment of the sewage.

[0013] Preferably, the sewage treatment mechanism also includes a discharge pipe fixedly connected to the lower surface of the filter hole and extending into the interior thereof, the free end of the discharge pipe is fixedly connected to the shell surface of the pump body and extends to the outside thereof, and one end of the discharge pipe is fixedly connected to a discharge pipe for discharging debris.

[0014] Through the above technical solution, the filtered debris is accumulated inside the filter cage. In order to improve the efficiency of the pump body in sewage treatment, the debris in the filter cage is cleaned regularly, so that the collected debris can be discharged to the outside of the pump body through the discharge pipe, and one end of the outside of the discharge pipe is closed, so that the debris can be discharged vertically through the discharge pipe.

[0015] Preferably, the sewage treatment mechanism also includes a stirring shaft rotatably connected to the top wall of the filter cage through a bearing, the lower end of the stirring shaft extends to the inside of the vertical tube of the discharge pipe, and the inner wall on one side of the bent tube of the discharge pipe is rotatably connected to another stirring shaft, the outer surfaces of the two stirring shafts are fixedly connected to spiral conveying plates, and the outer surface of one side of the discharge pipe is fixedly connected to a driving motor for driving the other stirring shaft to rotate.

[0016] Through the above technical solution, during the backwashing stage, the debris in the filter cage can be cleared. In order to transport the debris to the outside of the pump body, the driving motor controls the two stirring shafts to rotate, so that the spiral conveying plate rotates inside the discharge pipe, thereby transporting the debris that falls into the discharge pipe.

[0017] Preferably, the sewage treatment mechanism further comprises a universal joint fixedly connected to the adjacent end faces of the two stirring shafts, and stirring rods are fixedly connected to the outer surface of the stirring shaft connected to the inner wall of the filter cage distributed in a ring array.

[0018] Through the above technical solution, in order to realize the synchronous rotation of the two separated stirring shafts to realize the transportation of debris, the two stirring shafts are connected by a universal joint. At the same time, in order to realize the desorption of debris in the filter cage, the stirring shaft drives the stirring rod to rotate when rotating, thereby stirring the backwashing liquid in the filter cage, so that the centrifugal force of the water flow drives the debris to desorb and fall into the inside of the discharge pipe to realize the transportation of the debris.

[0019] Preferably, the discharge processing mechanism includes three sewage filters fixedly mounted on the bottom wall of the movable cavity by a bracket, the sewage filters are distributed above the filter holes, and the water outlets of the sewage filters at both ends of the distribution position are fixedly connected to suction pipes extending to the outside of the pump body.

[0020] Through the above technical scheme, the sewage is collected inside the movable cavity after primary filtration by the filter cage. In order to further filter the sewage according to the characteristics of the sewage and then use it by suction, three different types of sewage filters are installed inside the movable cavity, which can be activated carbon filters: using the adsorption characteristics of activated carbon to remove organic matter and odors, sand filters: using sand layers of different particle sizes for filtration, larger particles are intercepted, and smaller particles continue to filter downwards, and membrane filters: using the microporous structure of the membrane, pressure is used to make the water in the sewage pass through the membrane, while impurities are intercepted, and there is a gap between the lower surface of the three sewage filters and the inner bottom wall of the movable cavity, so that according to the characteristics of the sewage, the three sewage filters can be activated respectively to complete the sewage suction filtration.

[0021] Preferably, the discharge processing mechanism also includes a three-way pipe fixedly connected to the water outlet end of the sewage filter in the middle, the outer surfaces of the suction pipe and the three branches of the three-way pipe are fixedly connected with solenoid valves, and the outer surfaces of the suction pipe and the three-way pipe are installed with detection sensors.

[0022] Through the above technical scheme, in order to control the quality of discharged sewage, the sewage filtered by the sewage filter is detected by the detection sensor when it flows through the suction pipe. Corresponding detection sensors are set according to the type of sewage. If the sewage quality is qualified, it will be discharged through the suction pipe. If it is unqualified, the solenoid valve on the three-way pipe and the suction pipe is controlled to open and close to avoid unqualified sewage from flowing to the heat pump for use. The setting of the three-way pipe can facilitate the implementation of the backwashing mechanism.

[0023] Preferably, the backwash mechanism includes a backwash base fixedly connected to the lower surface of the pump body, a water gap exists between the upper surface of the backwash base and the lower surface of the pump body, a circulation cavity is opened inside the backwash base, a water outlet hole connected to the interior of the circulation cavity is penetrated through the upper surface of the backwash base, a flushing pipe is fixedly connected to the upper surface of one end of the backwash base, and a turbine is rotatably connected to the interior of the circulation cavity.

[0024] Through the above technical scheme, in order to backwash the interior of the pump body to remove accumulated impurities and reduce the frequency of manual maintenance, the suction pipe at one end extracts the sewage inside the pump body, and at this time, the solenoid valve of the three-way pipe and the suction pipe at the other end is opened, so that the sewage can flow back into the interior of the active cavity for flushing. When the flushing sewage fills the active cavity, the flushing pipe and the discharge pipe are opened to discharge the debris. At the same time, the flushing pipe can also be used to flush the interior of the active cavity. The turbine can stir the liquid to prevent the precipitation and accumulation of impurities.

[0025] The present invention provides an anti-blocking method for an anti-blocking device of a sewage direct-inlet heat pump, comprising the following steps:

[0026] S1. The sewage to be treated enters the filter cage inside the movable cavity through the sewage inlet pipe, so that the debris particles are retained inside the filter cage, and the treated sewage flows into the movable cavity;

[0027] S2. After the sewage inlet speed is controlled by the flow regulating valve, the sewage filtered by the filter cage flows to the left side of the overflow plate, and overflows to the right side of the overflow plate after the water level rises, and then the sewage is precipitated on the left side of the overflow plate;

[0028] S3, the precipitated sewage is sucked on the right side of the overflow plate, and the electromagnetic valves on the corresponding suction pipes are opened according to the type of sewage, and the corresponding sewage filter is used to re-filter the sewage. The filtered sewage is discharged to the heat pump system for use after being detected by the corresponding detection sensor. After the sewage is filtered by the middle sewage filter, the electromagnetic valves on the suction pipes at both ends are closed and the electromagnetic valves on both ends of the three-way pipe branch are opened, or only the electromagnetic valve of one side of the suction pipe is opened, so that the filtered sewage is discharged;

[0029] S4. When cleaning the pump body, the cleaning liquid is injected into the flushing pipe so that the liquid enters the active cavity through the backwashing base and the filter hole for cleaning and is discharged through the suction pipe. When backwashing, the solenoid valves on the pipelines connecting the two suction pipes to the heat pump are closed, and the solenoid valve on the three-way pipe is opened. At this time, the sewage sucked by the suction pipe is reversely flushed from the other two sewage filters into the active cavity for cleaning;

[0030] S5. When cleaning the movable cavity, the liquid flushes the filter cage. At this time, the drive motor works, and under the joint of the universal joint, the two stirring shafts rotate inside the discharge pipe, driving the spiral conveying piece and the stirring rod to rotate. When the stirring rod rotates, the backwashing liquid in the filter cage is stirred, so that the centrifugal force of the water flow drives the debris to desorb and fall into the inside of the discharge pipe, and then the spiral conveying piece rotates inside the discharge pipe, thereby transporting the debris that falls into the discharge pipe and discharging it vertically through the discharge pipe.

[0031] The beneficial effects of the present invention are:

[0032] 1. By setting up a sewage treatment mechanism, the sewage impurities filtered out from the inside of the pump body can be removed. During the adjustment process, the two stirring shafts are rotated inside the discharge pipe by driving the motor and under the joint of the universal joint, driving the spiral conveying piece and the stirring rod to rotate. When the stirring rod rotates, the backwashing liquid in the filter cage is stirred, so that the centrifugal force of the water flow drives the debris to desorb and fall into the inside of the discharge pipe, and then the spiral conveying piece rotates inside the discharge pipe, thereby transporting the debris falling into the discharge pipe and discharging it vertically through the discharge pipe, thereby improving the service life and effective working time of the pump body.

[0033] 2. By setting up a backwashing mechanism, the inside of the pump body can be cleaned efficiently. During the adjustment process, by injecting cleaning liquid into the flushing pipe, the liquid enters the active cavity through the backwashing base and the filter hole for cleaning and is discharged through the suction pipe. When backwashing, the solenoid valves on the pipelines connecting the two suction pipes to the heat pump are closed, and the solenoid valve on the three-way pipe is opened. At this time, the sewage sucked by the suction pipe is reversely flushed from the other two sewage filters into the active cavity for cleaning, and the liquid can be stirred by the turbine to avoid the precipitation and accumulation of impurities.

[0034] 3. By setting up a discharge processing mechanism, the treated sewage can be selectively absorbed according to the source and characteristics of the sewage and discharged from the pump body after filtering again, and then enter the heat pump unit. During the adjustment process, the solenoid valves on the corresponding suction pipes are opened according to the type of sewage, and the corresponding sewage filters are used to re-filter the sewage. The filtered sewage is discharged to the heat pump system for use after being detected by the corresponding detection sensors. After the sewage is filtered by the middle sewage filter, the solenoid valves on the suction pipes at both ends are closed and the solenoid valves on both ends of the three-way pipe branch are opened, or only the solenoid valve of the suction pipe on one side is opened, the filtered sewage can be discharged, thereby avoiding the problem of filter blockage caused by different sewage sharing the same filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of an anti-blocking device for a sewage direct-inlet heat pump proposed by the present invention;

[0036] Figure 2 A three-dimensional diagram of the mounting frame structure of an anti-blocking device for a sewage direct-inlet heat pump proposed by the present invention;

[0037] Figure 3 A three-dimensional diagram of the filter hole structure of an anti-blocking device for a sewage direct-inlet heat pump proposed by the present invention;

[0038] Figure 4 A three-dimensional diagram of the filter cage structure of a sewage direct-inlet heat pump anti-blocking device proposed by the present invention;

[0039] Figure 5 A three-dimensional diagram of the stirring rod structure of an anti-blocking device for a sewage direct-inlet heat pump proposed by the present invention;

[0040] Figure 6 A three-dimensional diagram of the discharge pipe structure of a sewage direct-inlet heat pump anti-blocking device proposed by the present invention;

[0041] Figure 7 A three-dimensional diagram of the structure of a spiral conveying piece of an anti-blocking device for a sewage direct-inlet heat pump proposed by the present invention;

[0042] Figure 8 A three-dimensional diagram of the universal joint structure of an anti-blocking device for a sewage direct-inlet heat pump proposed by the present invention;

[0043] Fig. 9 This is a structural stereogram of a discharge processing mechanism of a sewage direct-inlet heat pump anti-blocking device proposed by the present invention;

[0044] Fig.10 A three-dimensional diagram of the structure of a sewage filter of an anti-blocking device for a sewage direct-inlet heat pump proposed by the present invention;

[0045] Fig.11A three-dimensional diagram of the structure of a detection sensor of an anti-blocking device for a sewage direct-inlet heat pump proposed by the present invention;

[0046] Fig.12 A three-dimensional diagram of the flushing pipe structure of a sewage direct-inlet heat pump anti-blocking device proposed by the present invention;

[0047] Fig.13 This is a three-dimensional diagram of the turbine structure of the anti-blocking device for the sewage direct-inlet heat pump proposed by the present invention.

[0048] In the figure: 1. pump body; 11. movable cavity; 2. sewage inlet pipe; 3. sewage treatment mechanism; 31. mounting frame; 32. filter cage; 33. overflow plate; 34. filter hole; 35. discharge pipe; 36. discharge pipe; 37. stirring shaft; 38. spiral conveyor; 39. drive motor; 40. universal joint; 41. stirring rod; 5. discharge treatment mechanism; 51. sewage filter; 52. suction pipe; 53. three-way pipe; 54. solenoid valve; 55. detection sensor; 6. backwashing mechanism; 61. backwashing base; 62. circulation cavity; 63. water outlet; 64. flushing pipe; 65. turbine. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0050] Reference Figure 1-Figure 13 A device for preventing blocking of a sewage direct-inlet heat pump comprises a pump body 1 for absorbing and treating raw sewage, an active cavity 11 is provided inside the pump body 1, a sewage inlet pipe 2 extending into the active cavity 11 is fixedly connected to one side of the pump body 1, a sewage treatment mechanism 3 is provided on one side of the sewage inlet pipe 2 inside the active cavity 11, a backwash mechanism 6 is provided on the lower surface of the pump body 1, and a discharge treatment mechanism is provided on one side of the sewage treatment mechanism 3.

[0051] The sewage treatment mechanism 3 removes suspended matter and sediment from the sewage entering the movable cavity 11 from the sewage inlet pipe 2 , and removes debris when the backwash mechanism 6 flushes the movable cavity 11 .

[0052] A sewage pretreatment device is arranged in front of the heat pump system to prevent the heat pump system from being blocked. In order to directly pretreat the sewage in the sewage inlet pipe 2, the sewage treatment mechanism 3 includes a mounting frame 31 fixedly installed inside the movable cavity 11. The outer surface of the mounting frame 31 is fixedly connected to a filter cage 32. One end of the sewage inlet pipe 2 is fixedly extended to the inside of the filter cage 32. The discharge port of the sewage inlet pipe 2 is received by the filter cage 32, so that the debris particles are retained in the inside of the filter cage 32, and the treated sewage flows into the inside of the movable cavity 11.

[0053] In order to remove the sediment in the sewage, the sewage treatment mechanism 3 also includes an overflow plate 33 fixedly connected to the bottom wall of the movable cavity 11. The lower surface of the movable cavity 11 accounts for half of its flat area and is penetrated by filter holes 34. The overflow plate 33 and the solid area of ​​the movable cavity 11 form an L-shaped overflow interval. The interval inside the movable cavity 11 is divided into two by the overflow plate 33, and the upper part of the overflow plate 33 exceeds the upper part of the filter cage 32. Therefore, after controlling the sewage entry speed, the sewage filtered by the filter cage 32 flows to the left side of the overflow plate 33, and overflows to the right side of the overflow plate 33 after the water level rises, and then the left side of the overflow plate 33 can realize the sedimentation treatment of the sewage.

[0054] The filtered debris is accumulated inside the filter cage 32. In order to improve the efficiency of the pump body 1 in treating sewage, the debris in the filter cage 32 is cleaned regularly. Therefore, the sewage treatment mechanism 3 also includes a discharge pipe 35 fixedly connected to the lower surface of the filter hole 34 and extending to the inside thereof. The free end of the discharge pipe 35 is fixedly connected to the shell surface of the pump body 1 and extends to the outside thereof. One end of the discharge pipe 35 is fixedly connected to a discharge pipe 36 for discharging debris. The collected debris is discharged to the outside of the pump body 1 through the discharge pipe 35, and one end of the outside of the discharge pipe 35 is closed, so that the debris can be discharged vertically through the discharge pipe 36.

[0055] During the backwashing stage, the debris in the filter cage 32 can be cleared. In order to transport the debris to the outside of the pump body 1, the sewage treatment mechanism 3 also includes a stirring shaft 37 rotatably connected to the inner top wall of the filter cage 32 through a bearing, and the lower end of the stirring shaft 37 extends to the inside of the vertical tube of the discharge pipe 35. Another stirring shaft 37 is rotatably connected to the inner wall of one side of the bent tube of the discharge pipe 35. The outer surfaces of the two stirring shafts 37 are fixedly connected with spiral conveying pieces 38. The outer surface of one side of the discharge pipe 35 is fixedly connected with a driving motor 39 for driving the other stirring shaft 37 to rotate. The driving motor 39 controls the rotation of the two stirring shafts 37, so that the spiral conveying piece 38 rotates inside the discharge pipe 35, thereby transporting the debris falling into the discharge pipe 35.

[0056] In order to realize the synchronous rotation of the two separated stirring shafts 37 to realize the transportation of debris, and at the same time to realize the desorption treatment of debris in the filter cage 32, the sewage treatment mechanism 3 also includes a universal joint 40 fixedly connected to the adjacent end faces of the two stirring shafts 37, and the outer surface of the stirring shaft 37 connected to the inner wall of the filter cage 32 is distributed in a ring array and fixedly connected with a stirring rod 41. The two stirring shafts 37 are connected by the universal joint 40. When the stirring shaft 37 rotates, it drives the stirring rod 41 to rotate, thereby stirring the backwashing liquid in the filter cage 32, so that the centrifugal force of the water flow drives the debris to desorb and fall into the inside of the discharge pipe 35 to realize the transportation of debris.

[0057] By setting up the sewage treatment mechanism 3, the sewage impurities filtered out from the inside of the pump body 1 can be removed. During the adjustment process, the driving motor 39 works and the two stirring shafts 37 are rotated inside the discharge pipe 35 under the joint of the universal joint 40, driving the spiral conveying piece 38 and the stirring rod 41 to rotate. When the stirring rod 41 rotates, the backwashing liquid in the filter cage 32 is stirred, so that the centrifugal force of the water flow drives the debris to desorb and fall into the inside of the discharge pipe 35, and then the spiral conveying piece 38 rotates inside the discharge pipe 35, so as to transport the debris falling into the discharge pipe 35 and discharge it vertically through the discharge pipe 36, thereby improving the service life and effective working time of the pump body 1.

[0058] The discharge processing mechanism 5 selectively absorbs the treated sewage according to the source and characteristics of the sewage and discharges it from the pump body 1 after filtering again, and then enters the heat pump unit.

[0059] After the sewage is primarily filtered by the filter cage 32, it is collected inside the movable cavity 11. In order to further filter the sewage according to its characteristics and then use it by suction, the discharge processing mechanism 5 includes three sewage filters 51 fixedly mounted on the inner bottom wall of the movable cavity 11 by a bracket. The sewage filters 51 are distributed above the filter holes 34, and the outlets of the sewage filters 51 at both ends of the distribution position are fixedly connected with suction pipes 52 extending to the outside of the pump body 1. Three different types of sewage filters 51 are installed inside the movable cavity 11. One is an activated carbon filter: that is, the adsorption characteristics of activated carbon are used to remove organic matter and odor. The second is a sand filter: that is, filtering is performed using sand layers of different particle sizes, larger particles are intercepted, and smaller particles continue to be filtered downward. The third is a membrane filter: that is, using the microporous structure of the membrane, the water in the sewage passes through the membrane by pressure, and the impurities are intercepted. There is a gap between the lower surface of the three sewage filters 51 and the inner bottom wall of the movable cavity 11, so that the three sewage filters 51 can be activated respectively according to the characteristics of the sewage to complete the sewage suction filtration.

[0060] In another embodiment, the sewage filter 51 may also be other types of filters. The corresponding filters may be adjusted and set for different targets. The filter types may be all different or at least two may be the same, which is not limited in the present invention.

[0061] In order to control the quality of discharged sewage, the discharge processing mechanism 5 also includes a three-way pipe 53 fixedly connected to the water outlet end of the intermediate sewage filter 51, and the outer surfaces of the three branches of the suction pipe 52 and the three-way pipe 53 are fixedly connected with solenoid valves 54, and the outer surfaces of the suction pipe 52 and the three-way pipe 53 are installed with detection sensors 55. The sewage filtered by the sewage filter 51 is detected by the detection sensor 55 when flowing through the suction pipe 52. Corresponding detection sensors 55 are set according to the type of sewage. If the sewage quality is qualified, it is discharged from the suction pipe 52. If it is unqualified, the solenoid valve 54 on the three-way pipe 53 and the suction pipe 52 is controlled to open and close, so as to prevent unqualified sewage from flowing to the heat pump for use. The setting of the three-way pipe 53 can facilitate the implementation of the backwashing mechanism 6.

[0062] Optionally, the detection sensor 55 includes but is not limited to a pH sensor, a dissolved oxygen sensor, and a turbidity sensor.

[0063] By setting up the discharge processing mechanism 5, the treated sewage can be selectively absorbed according to the source and characteristics of the sewage and discharged from the pump body 1 after filtering again, and then enter the heat pump unit. During the adjustment process, the electromagnetic valves 54 on the corresponding suction pipes 52 are opened respectively according to the type of sewage. For example, after the electromagnetic valve 54 on the left suction pipe 52 is opened, acidic sewage flows from the suction pipe 52, and after the electromagnetic valve 54 on the right suction pipe 52 is opened, alkaline sewage flows from the suction pipe 52, and conventional sewage is sucked and processed by the middle sewage filter 51, and the corresponding sewage filter 51 re-filters the sewage. The filtered sewage is discharged to the heat pump system for use after being detected by the corresponding detection sensor 55. After the sewage is filtered by the middle sewage filter 51, the electromagnetic valves 54 on the suction pipes 52 at both ends are closed and the electromagnetic valves 54 on the two ends of the three-way pipe 53 branch pipe are opened, or the electromagnetic valve 54 on only one side of the suction pipe 52 is opened, the filtered sewage can be discharged, thereby avoiding different sewage sharing the same filter and causing filter blockage.

[0064] The backwash mechanism 6 utilizes the treated sewage to flush the interior of the movable cavity 11 to remove the accumulated impurities.

[0065] In order to backwash the interior of the pump body 1 to remove the accumulated impurities and reduce the frequency of manual maintenance, the backwash mechanism 6 includes a backwash base 61 fixedly connected to the lower surface of the pump body 1, and there is a water gap between the upper surface of the backwash base 61 and the lower surface of the pump body 1. A circulation cavity 62 is opened inside the backwash base 61, and a water outlet 63 connected to the interior of the circulation cavity 62 is opened through the upper surface of the backwash base 61. A flushing pipe 64 is fixedly connected to the upper surface of one end of the backwash base 61, and the circulation cavity 62 is provided with a water outlet hole 63 connected to the interior of the circulation cavity 62. The internal rotation is connected to a turbine 65, and the suction pipe 52 at one end extracts the sewage inside the pump body 1. At this time, the three-way pipe 53 and the solenoid valve 54 of the suction pipe 52 at the other end are opened, so that the sewage can flow back into the movable cavity 11 for flushing. When the flushed sewage fills the movable cavity 11, the flushing pipe 64 and the discharge pipe 36 are opened to discharge the debris. At the same time, the flushing pipe 64 can also be used to flush the inside of the movable cavity 11. The turbine 65 can stir the liquid to avoid the precipitation and accumulation of impurities.

[0066] By setting up the backwash mechanism 6, the inside of the pump body 1 can be cleaned efficiently. During the adjustment process, by injecting cleaning liquid into the flushing pipe 64, the liquid enters the active cavity 11 through the backwashing base 61 and the filter hole 34 for cleaning and is discharged through the suction pipe 52. When backwashing, the solenoid valve 54 on the pipeline connecting the two suction pipes 52 to the heat pump is closed, and the solenoid valve 54 on the three-way pipe 53 is opened. At this time, the sewage sucked by the suction pipe 52 is reversely flushed from the other two sewage filters 51 into the active cavity 11 for cleaning, and the liquid can be stirred by the turbine 65 to avoid the precipitation and accumulation of impurities.

[0067] Reference Figure 1-Figure 13 , a method for preventing blocking of a sewage direct-into-heat pump anti-blocking device, comprising the following steps:

[0068] S1, the sewage to be treated enters the filter cage 32 inside the movable cavity through the sewage inlet pipe 2, so that the debris particles are retained inside the filter cage 32, and the treated sewage flows into the movable cavity 11;

[0069] S2. After the sewage inlet speed is controlled by the flow regulating valve, the sewage filtered by the filter cage 32 flows to the left side of the overflow plate 33, and overflows to the right side of the overflow plate 33 after the water level rises, and then the sewage is precipitated on the left side of the overflow plate 33;

[0070] S3, the precipitated sewage is sucked on the right side of the overflow plate 33, and the electromagnetic valves 54 on the corresponding suction pipes 52 are opened according to the type of sewage. For example, after the electromagnetic valve 54 on the left suction pipe 52 is opened, acidic sewage flows from the suction pipe 52, and after the electromagnetic valve 54 on the right suction pipe 52 is opened, alkaline sewage flows from the suction pipe 52, and conventional sewage is sucked and processed by the middle sewage filter 51, and the corresponding sewage filter 51 re-filters the sewage. The filtered sewage is discharged to the heat pump system for use after being detected by the corresponding detection sensor 55. After the sewage is filtered by the middle sewage filter 51, the electromagnetic valves 54 on the suction pipes 52 at both ends are closed and the electromagnetic valves 54 on both ends of the three-way pipe 53 branch pipe are opened, or the electromagnetic valve 54 on only one side of the suction pipe 52 is opened, so that the filtered sewage is discharged;

[0071] S4. When cleaning the pump body 1, the cleaning liquid is injected into the flushing pipe 64, so that the liquid enters the movable cavity 11 through the backwashing base 61 and the filter hole 34, and is discharged through the suction pipe 52 after cleaning. When backwashing, the solenoid valve 54 on the pipeline connecting the two suction pipes 52 to the heat pump is closed, and the solenoid valve 54 on the three-way pipe 53 is opened. At this time, the sewage sucked by the suction pipe 52 is reversely flushed from the other two sewage filters 51 into the movable cavity 11 for cleaning;

[0072] S5. When cleaning the movable cavity 11, the liquid flushes the filter cage 32. At this time, the drive motor 39 works, and under the joint of the universal joint 40, the two stirring shafts 37 rotate inside the discharge pipe 35, driving the spiral conveying piece 38 and the stirring rod 41 to rotate. When the stirring rod 41 rotates, the backwashing liquid in the filter cage 32 is stirred, so that the centrifugal force of the water flow drives the debris to desorb and fall into the inside of the discharge pipe 35, and then the spiral conveying piece 38 rotates inside the discharge pipe 35, thereby transporting the debris falling into the discharge pipe 35 and discharging it vertically through the discharge pipe 36.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for preventing blocking of a sewage direct-inlet heat pump, comprising a pump body (1) for absorbing and treating raw sewage, wherein a movable cavity (11) is provided inside the pump body (1), and characterized in that: A sewage inlet pipe (2) extending into the interior of the movable cavity (11) is fixedly connected to one side of the pump body (1); a sewage treatment mechanism (3) is provided on one side of the sewage inlet pipe (2) located inside the movable cavity (11); a backwash mechanism (6) is provided on the lower surface of the pump body (1); and a discharge treatment mechanism (5) is provided on one side of the sewage treatment mechanism (3); The sewage treatment mechanism (3) removes suspended matter and sediment from the sewage entering the movable cavity (11) from the sewage inlet pipe (2), and removes debris when the backwash mechanism (6) flushes the interior of the movable cavity (11); A filter hole (34) is formed through the lower surface of the movable cavity (11), which accounts for half of its flat surface area. The sewage treatment mechanism (3) further comprises a discharge pipe (35) fixedly connected to the lower surface of the filter hole (34) and extending into the interior thereof. The sewage treatment mechanism (3) comprises a mounting frame (31) fixedly mounted inside the movable cavity (11), the outer surface of the mounting frame (31) being fixedly connected to a filter cage (32), the sewage treatment mechanism (3) further comprising a stirring shaft (37) rotatably connected to the top wall of the filter cage (32) via a bearing, the lower end of the stirring shaft (37) extending to the inside of the vertical tube of the discharge pipe (35), the inner wall of one side of the bent tube of the discharge pipe (35) being rotatably connected to another stirring shaft (37), the outer surfaces of the two stirring shafts (37) being fixedly connected to a spiral conveying sheet (38), and the outer surface of one side of the discharge pipe (35) being fixedly connected to a driving motor (39) for driving the other stirring shaft (37) to rotate; The sewage treatment mechanism (3) further comprises a universal joint (40) fixedly connected to adjacent end surfaces of the two stirring shafts (37), and stirring rods (41) are fixedly connected to the outer surface of the stirring shaft (37) connected to the inner wall of the filter cage (32) in an annular array; The backwashing mechanism (6) utilizes the treated sewage to backwash the interior of the movable cavity (11) to remove accumulated impurities; The discharge processing mechanism (5) selectively absorbs the treated sewage according to the source and characteristics of the sewage and again filters it before discharging it from the pump body (1) and then entering the heat pump unit; The discharge processing mechanism (5) comprises three sewage filters (51) fixedly mounted on the inner bottom wall of the movable cavity (11) by a bracket, the sewage filters (51) being distributed above the filter holes (34), and the water outlets of the sewage filters (51) at both ends of the distribution position are fixedly connected to a suction pipe (52) extending to the outside of the pump body (1); The discharge processing mechanism (5) further comprises a three-way pipe (53) fixedly connected to the water outlet end of the sewage filter (51) in the middle, the outer surfaces of the suction pipe (52) and the three branches of the three-way pipe (53) are fixedly connected to electromagnetic valves (54), and the outer surfaces of the suction pipe (52) and the three-way pipe (53) are installed with detection sensors (55).

2. The anti-blocking device for a sewage direct-inlet heat pump according to claim 1 is characterized by: One end of the sewage inlet pipe (2) is fixedly extended to the interior of the filter cage (32).

3. The anti-blocking device for a sewage direct-inlet heat pump according to claim 2 is characterized by: The sewage treatment mechanism (3) further comprises an overflow plate (33) fixedly connected to the inner bottom wall of the movable cavity (11), wherein the overflow plate (33) and the solid area of ​​the movable cavity (11) form an L-shaped overflow section.

4. The anti-blocking device for a sewage direct-inlet heat pump according to claim 3 is characterized by: The free end of the discharge pipe (35) is fixedly connected to the shell surface of the pump body (1) and extends to the outside thereof, and one end of the discharge pipe (35) is fixedly connected to a discharge pipe (36) for discharging debris.

5. The anti-blocking device for a sewage direct-inlet heat pump according to claim 4 is characterized by: The backwash mechanism (6) comprises a backwash base (61) fixedly connected to the lower surface of the pump body (1); a water gap exists between the upper surface of the backwash base (61) and the lower surface of the pump body (1); a circulation cavity (62) is provided inside the backwash base (61); a water outlet hole (63) is provided through the upper surface of the backwash base (61) and is connected to the inside of the circulation cavity (62); a flushing pipe (64) is fixedly connected to the upper surface of one end of the backwash base (61); and a turbine (65) is rotatably connected to the inside of the circulation cavity (62).

6. A method for preventing blocking of the anti-blocking device of the sewage direct-inlet heat pump according to claim 5, comprising the following steps: S1, the sewage to be treated enters the filter cage (32) inside the movable cavity through the sewage inlet pipe (2), so that the debris particles are retained inside the filter cage (32), and the treated sewage flows into the movable cavity (11); S2, after the sewage inlet speed is controlled by the flow regulating valve, the sewage filtered by the filter cage (32) flows to the left side of the overflow plate (33), and overflows to the right side of the overflow plate (33) after the water level rises, and then the sewage is precipitated on the left side of the overflow plate (33); S3, the precipitated sewage is sucked on the right side of the overflow plate (33), and the electromagnetic valves (54) on the corresponding suction pipes (52) are opened according to the type of sewage, so that the corresponding sewage filter (51) re-filters the sewage. The filtered sewage is detected by the corresponding detection sensor (55) and then discharged to the heat pump system for use. After the sewage is filtered by the middle sewage filter (51), the electromagnetic valves (54) on the suction pipes (52) at both ends are closed and the electromagnetic valves (54) on the two ends of the branch pipe of the three-way pipe (53) are opened, so that the filtered sewage is discharged; S4. When cleaning the pump body (1), a cleaning liquid is injected into the flushing pipe (64), so that the liquid enters the movable cavity (11) through the backwashing base (61) and the filter hole (34) for cleaning and is discharged through the suction pipe (52). When backwashing, the solenoid valves (54) on the pipelines connecting the two suction pipes (52) to the heat pump are closed, while the solenoid valve (54) on the three-way pipe (53) is opened. At this time, the sewage sucked by the suction pipe (52) is reversely flushed from the other two sewage filters (51) into the movable cavity (11) for cleaning; S5. When the movable cavity (11) is cleaned, the liquid flushes the filter cage (32). At this time, the drive motor (39) works and, under the joint of the universal joint (40), the two stirring shafts (37) rotate inside the discharge pipe (35), driving the spiral conveying piece (38) and the stirring rod (41) to rotate. When the stirring rod (41) rotates, the backwashing liquid in the filter cage (32) is stirred, so that the centrifugal force of the water flow drives the debris to be desorbed and fall into the discharge pipe (35). Then, the spiral conveying piece (38) rotates inside the discharge pipe (35), thereby conveying the debris that falls into the discharge pipe (35) and discharging it vertically through the discharge pipe (36).

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