Sewage source heat pump filtering device

Abstract

The invention relates to the technical field of sewage source heat pumps, in particular to a sewage source heat pump filtering device which comprises an intercepting mechanism arranged at the front end of a heat pump system and used for intercepting large-size sundries in sewage, and the intercepting mechanism comprises a sewage pipe assembly, a rotary grating assembly, an impeller ring piece, a transmission assembly and a cleaning box. The rotary grille assembly and water flow kinetic energy are linked to achieve an interception-rotation-cleaning closed loop, a spring pressing rod is combined to trigger displacement alarm in a limiting mode, dirt is stripped through bubble erosion, sticky dirt is secondarily captured through an accumulation box, sewage kinetic energy is used for driving, energy consumption is reduced, and the problems that a traditional coarse grille is lagged in blockage cleaning and high in energy consumption are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage source heat pumps, in particular to a sewage source heat pump filtering device. Background Art

[0002] In existing sewage source heat pump systems, sewage first flows through the water diversion culvert into the sewage pump pit by gravity. Before the sewage enters the sewage pump pit, a coarse grid with a gap of 30-50mm is used to block impurities in the sewage to prevent subsequent entanglement of the water pump impeller. This coarse grid filtration has the following problems: The coarse screen has limited interception effect on flexible fibrous debris such as hair, plant fibers, and textile debris. This type of debris is flexible and entangled, and can easily embed into the gaps between bars or escape through the gaps under the impact of water flow. Even if it is intercepted, it will be tightly entangled and hooked on the surface of the bars and in the tooth gaps due to its own fiber structure. The unloading roller brush configured at the rear of the coarse screen device can only brush off large solid impurities on the surface of the screen through mechanical contact, but its roller brush structure makes it difficult to penetrate into the complex space of the bar teeth, and lacks sufficient stripping force for the fiber dirt entangled in the tooth gaps, resulting in continuous accumulation of flexible debris.

[0003] Especially in the heat exchange scenario of sewage with high fiber content (such as municipal sewage, textile industrial wastewater, etc.), the fiber pollution in the sewage has high concentration and strong viscosity, and the interception and cleaning defects of the coarse screen are further amplified. Summary of the Invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a sewage source heat pump filtration device to solve the problems raised in the above-mentioned background technology, such as the poor effect of the coarse screen of the existing sewage source heat pump system in intercepting large-volume debris, the easy clogging of dirt, which requires shutdown for manual cleaning and affects efficiency, and the difficult separation of flexible dirt and the difficulty in timely detection of blockage and the inability to clean it in time.

[0005] To achieve the above object, the present invention provides the following technical solutions: A sewage source heat pump filtering device, comprising: The interception mechanism is arranged at the front end of the heat pump system and is used to intercept large-volume debris in the sewage. The interception mechanism includes a sewage pipe assembly, a rotating grille assembly, an impeller ring, a transmission assembly and a cleaning box; the bubble erosion mechanism is used to peel off the residual dirt on the grille surface, including a storage box, a submersible pump and a venturi tube. The storage box receives sewage that penetrates the rotating grille assembly. The submersible pump extracts the dirt at the bottom of the storage box and forms a gas-liquid mixed flow through the venturi tube to impact the grille plate in the cleaning chamber; the alarm assembly includes a contact sensor, an electric control valve and an alarm. The contact sensor responds to the grille plate displacement trigger signal, and links to close the electric control valve and sound an alarm; the kinetic energy transfer assembly uses the sewage flow to drive the impeller ring to rotate, and drives the rotating grille assembly to rotate after deceleration by the transmission assembly, which is used to drive the continuous operation of the interception mechanism.

[0006] Preferably, the sewage pipe assembly includes a head pipe and a tail pipe, the head pipe is connected to the electric control valve, the electric control valve is connected to the sewage inlet pipe, the tail pipe is rotatably connected to the impeller ring, and the head pipe and tail pipe are fixed in the cleaning box and in sliding contact with the rotating grille assembly.

[0007] Preferably, the rotating grille assembly includes a grille shaft, an inner ring frame, an outer ring, multiple groups of grille plates and a guide component group; the grille shaft is rotatably connected to the cleaning box, the inner ring frame is fixed to the outer wall of the grille shaft and is connected to the outer ring through a bracket rod; the grille plate is slidably connected to the inner ring frame through a slide groove, and multiple groups of grille plates constitute a complete disc; the guide component group is arranged on the outer ring, including a rotary buckle and a spring pressure rod, and the grille plate is abutted against the outer ring through the spring pressure rod to make it fit the outer ring.

[0008] Preferably, the buckle of the guide component group is rotatably connected to the outer ring, the end of the buckle is L-shaped and fixed to the spring pressure rod, and grooves are provided at corresponding positions of the grille plate and the outer ring. When the buckle is embedded in the groove, the spring pressure rod presses the grille plate to limit the position.

[0009] Preferably, the impeller ring is a circular ring structure, which is coaxially connected to the tail pipe, and its outer wall is fixedly connected to the ring frame of the transmission assembly. The transmission assembly includes a ring frame, a gear and a reduction box. The ring frame engages the gear through the ring gear, and the gear is connected to the input end of the reduction box. The output end of the reduction box drives the grille shaft to rotate.

[0010] Preferably, the storage tank is provided with a water outlet connected to the subsequent heat pump pipeline, and the deposited pollutants are sucked out from the bottom by a submersible pump. The throat of the venturi tube draws in air to form a gas-liquid mixed flow, which is sprayed into the cleaning box to impact the surface of the grid plate.

[0011] Preferably, the contact sensor is installed in the cleaning box and responds to the grid plate displacement trigger signal. The bottom of the cleaning box is provided with a sewage outlet connected to the sedimentation tank, and the top is provided with a detachable box cover for maintenance.

[0012] Preferably, the box cover is opened to detach the rotating guide component group for facilitating the removal of the blocked grid plate.

[0013] Preferably, the sewage flow driving impeller ring is rotated to drive the rotation of the grid assembly through the transmission assembly.

[0014] Preferably, the bubble erosion mechanism cooperates with the alarm assembly to form a closed-loop control through bubble stripping, sewage deposition, and blockage warning, ensuring continuous and efficient operation of the heat pump system.

[0015] Compared with the prior art, the present application has the following advantages: Through the linkage design of the rotating grid assembly and the kinetic energy of the sewage flow, continuous closed-loop operation of interception, rotation, and cleaning is achieved. The grid plate continuously updates the interception surface driven by the water flow, and the bubble erosion mechanism actively strips the residual sewage, effectively avoiding the blockage problem caused by the accumulation of fiber sewage in traditional grids, greatly reducing the frequency of manual cleaning. The unique spring pressure rod limiting structure and the slidable grid plate design enable the grid plate to displace and automatically alarm when fiber sewage accumulates, timely control the electric control valve to block the sewage from entering, and remind the staff to maintain the blocked grid plate through the alarm mechanism, breaking through the lagging defect of the traditional system relying on manual inspection, and ensuring the maintenance response efficiency and system safety. In the case of short-term large-flow fiber sewage, timely shutdown can prevent fiber sewage from entering the subsequent pipeline of the heat pump system. Through the cooperation of the accumulation tank deposition and the bubble erosion, the viscous sewage that penetrates the grid is captured and cleaned in a targeted manner, avoiding its entry into the subsequent heat pump system and causing heat exchange efficiency to decay, thereby prolonging the service life of the equipment. The sewage flow kinetic energy drives the impeller ring and the transmission assembly, eliminating the need for external power to achieve grid rotation and cleaning functions, reducing the overall energy consumption of the system, and meeting the development trend of green energy-saving technology. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall three-dimensional structure; Figure 2 is a schematic diagram of the overall cross-sectional structure; Figure 3 is a schematic diagram of the cross-sectional structure of the sewage pipe assembly and the rotating grid assembly; Figure 4 is a schematic diagram of the three-dimensional structure of the impeller ring, transmission assembly, and cleaning tank; Figure 5 is a schematic diagram of the cross-sectional structure of the rotating grid assembly, transmission assembly, and cleaning tank; Figure 6 is a schematic diagram of the structure of the rotating grid assembly; Figure 7 It is a schematic cross-sectional view of the outer ring, grid plate and guide component assembly; Figure 8 It is a cross-sectional structural diagram of the cleaning box and the rotating grille assembly; Figure 9 It is a schematic diagram of the cross-sectional structure of the venturi tube, accumulation box and cleaning box.

[0017] In the figure: 1. Sewage pipe assembly; 11. Head pipe; 12. Tail pipe; 2. Rotating grille assembly; 21. Grille shaft; 22. Inner ring frame; 23. Outer ring; 24. Grille plate; 25. Guide component group; 3. Impeller ring; 4. Transmission assembly; 41. Ring frame; 42. Gear; 43. Reducer; 5. Storage tank; 51. Water outlet; 6. Submersible pump; 7. Venturi tube; 8. Cleaning tank; 81. Tank cover; 82. Sewage outlet; 9. Contact sensor. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] An embodiment provided by the present invention: A sewage source heat pump filtering device, comprising: See Figure 1 and Figure 2 , an interception mechanism, which is provided before the heat pump system and is used to intercept large-volume debris in the sewage. The interception mechanism includes a sewage pipe assembly 1, a rotating grille assembly 2, an impeller ring 3, a transmission assembly 4 and a cleaning box 8; See Figure 2 The sewage pipe assembly 1 includes a head pipe 11 and a tail pipe 12 for circulating sewage. One end of the head pipe 11 is connected to the electric control valve through a one-way valve, and the electric control valve is connected to the sewage inlet pipe. The head pipe 11 and the tail pipe 12 are in sliding contact with the outer ring 23 and the grid plate 24 through mechanical fillers. The head pipe 11 and the tail pipe 12 are fixedly connected to the cleaning box 8. The sewage entering the head pipe 11 will pass through the rotating grid assembly 2 and flow to the tail pipe 12; See Figures 1-8The rotating grille assembly 2 includes a grille shaft 21, which is rotatably connected to the cleaning box 8. The outer wall of the grille shaft 21 is fixedly connected to an inner ring frame 22, and the inner ring frame 22 is connected to the outer ring 23 through a bracket rod. The inner ring frame 22 is in sliding contact with a grille plate 24 through a chute. The grille plates 24 are provided with eight groups, and the eight groups of grille plates 24 form a complete disc. The grille plates 24 can move left and right in the axis direction of the grille shaft 21 through the chute of the inner ring frame 22. Specifically, Figure 7 The middle grille plate 24 can be moved to the right away from the outer ring 23, and the eight groups of grille plates 24 are in movable contact rather than fixed connection. A guide component group 25 is provided on the outer ring 23, and the guide component group 25 includes a knob and a spring pressure rod, wherein the knob is rotatably connected to the outer ring 23, and grooves are provided at the positions of the grille plate 24 and the outer ring 23 corresponding to the guide component group 25. The end of the knob away from the rotation connection position is L-shaped, and one end of the spring pressure rod is fixedly connected in the L-shaped structure, and the other end of the spring pressure rod is against the grille plate 24 through a gasket. When the knob contacts the grille plate 24 and the outer ring 23 through the groove in the guide component group 25, the spring pressure rod will press against the grille plate 24 to make it fit the outer ring 23. At this time, Figure 7 As shown; See Figure 2 、 Figure 3 and Figure 4 The impeller ring 3 is a prior art, and its specific working principle is not described in detail herein. Its outer wall is rotatably connected to the tail pipe 12. The axis of the impeller ring 3 is the same as that of the tail pipe 12 and the head pipe 11. When sewage flows through the head pipe 11 and the tail pipe 12, the flowing sewage pushes the blades in the impeller ring 3 when passing through the impeller ring 3, thereby driving the rotation of the impeller ring 3. The impeller ring 3 rotates around the axis in the tail pipe 12. The impeller ring 3 is annular as a whole. See Figure 5 The transmission assembly 4 includes a ring frame 41, which is fixedly connected to the outer wall of the impeller ring 3. The transmission assembly 4 slides between the tail pipe 12 and the storage box 5. The ring frame 41 rotates as the impeller ring 3 rotates. The outer wall of the ring frame 41 is fixedly connected to a ring gear, and the ring frame 41 is meshed with a gear 42 through the ring gear. One side of the gear 42 is rotatably connected to the storage box 5, and the other side of the gear 42 is fixedly connected to the input end of the reduction box 43. The reduction box 43 is installed in the cleaning box 8 through a bracket. The output end of the reduction box 43 is fixedly connected to the grille shaft 21. Through the rotation of the impeller ring 3, the grille shaft 21 is driven to rotate at a low speed around its axis through the transmission and deceleration of the ring frame 41, the gear 42, and the reduction box 43; The various components of this interception mechanism work together. After the sewage passes through the external sewage pipe and the one-way valve into the head pipe 11, it first passes through the grille plate 24. The grille plate 24 will block large impurities. Only water can pass through the grille plate 24 and continue to flow into the tail pipe 12. The impeller ring 3 in the tail pipe 12 generates a rotational force through the transmission component 4 at a low speed to drive the rotating grille component 2, and then the grille shaft 21, the inner ring frame 22, the outer ring 23 and the grille plate 24 rotate. The grille plate 24 in sliding contact between the head pipe 11 and the tail pipe 12 will continue to displace. If there is solid dirt attached to it, it will be driven into the cleaning chamber of the cleaning box 8. There will be grille plates 24 that are not blocked by solid dirt to block the dirt in the sewage.

[0020] See Figure 1-Figure 2 , a bubble erosion mechanism, which is used for the primary precipitation of sticky pollutants, and at the same time, the pollutant-water mixture generates bubbles to clean the grid plate 24; The bubble erosion mechanism includes an accumulation tank 5, a submersible pump 6 and a venturi tube 7; See Figure 2 and Figure 9 The storage box 5 includes a storage box 5 and a water outlet 51. The storage box 5 is provided with a storage chamber. When the viscous pollutants in the sewage are not mixed with the dirt, the volume is small and can smoothly pass through the obstruction of the grid plate 24. When the viscous pollutants flow into the storage box 5 with the sewage, most of them will be deposited at the bottom of the chamber due to their own weight. The heavier pollutants and viscous pollutants deposited at the bottom of the storage chamber together with part of the sewage will be pumped into the submersible pump 6 through the pumping working end at the bottom of the submersible pump 6, and will be discharged to the clean chamber of the cleaning box 8 through the venturi tube 7. It should be noted that when this sewage mixture passes through the venturi tube 7, the venturi tube 7 is a prior art, and the sewage will pass through the suddenly narrowed throat, resulting in When the pressure drops, external air will be pressed into the venturi tube 7 through the air pipe and mix with the sewage to form bubbles. At this time, the mixed sewage with bubbles will rush to the position of the grid plate 24. Since the bubbles have compressibility and buoyancy characteristics, the bubbles will burst quickly to generate a small impact force, which can effectively peel off the residual dirt attached to the surface of the grid plate 24. Due to the influence of the bubble burst, the mixed dirt and the residual dirt after peeling are not easy to adhere to the cleaning chamber to form a large volume of dirt. With the flow of water, they flow from the two sides of the arc shape of the cleaning chamber to the sewage outlet 82 at the bottom, and are discharged into the sedimentation tank through the one-way valve and the pipeline for sedimentation to collect the viscous dirt. Of course, this sedimentation tank is a prior art and is not within the scope of protection of this application.

[0021] However, if there are fibrous pollutants in the sewage, such as hair, textile debris, plant fibers, etc., these pollutants are easily entangled in the grid structure of the grid plate 24. Although the water flow and bubbles discharged by the Venturi tube 7 can clean the pollutants on the grid plate 24, there will still be tightly entangled fibrous pollutants remaining. When the residual pollutants begin to accumulate, they will partially block the impact of bubbles and water flow, thereby causing the pollutants to accumulate on the grid plate 24 and unable to efficiently circulate the sewage.

[0022] The grid plate 24 where sewage cannot flow is in front of the port of the venturi tube 7. The convection pushes the grid plate 24 to move away from the outer ring 23. Since the water flow cannot efficiently pass through the grid plate 24, the grid plate 24 will overcome the thrust of the spring rod on the guide component assembly 25 under the push of the water flow. Figure 7 The position shown moves to the right, and then contacts the contact sensor 9 and triggers the contact sensor 9. After the contact sensor 9 is triggered, it sends a signal to the electric control valve of the sewage inlet pipe to close it, and reminds the staff through the alarm that there is a grille plate 24 that cannot be continued and needs to be cleaned. The staff who receive the warning opens the box cover 81. At this time, remove the bolts between the guide component group 25 buckle and the outer ring 23, and turn the guide component group 25 to release the limit on the grille plate 24. The disassembly can be completed by lifting the grille plate 24 upwards. After disassembly and cleaning, put it into the inner ring frame 22 and the outer ring 23 according to the original steps, and limit it through the guide component group 25.

[0023] The cleaning box 8 includes a box cover 81 and the cleaning box 8. The box cover 81 is removably mounted on the top of the cleaning box 8. A contact sensor 9 is installed in the cleaning box 8. The contact sensor 9 is electrically connected to an electronically controlled valve and an alarm. The electronically controlled valve is installed before the one-way valve connected to one end of the sewage pipe assembly 1. The water outlet 51 is connected to the water outlet pipe, which is connected to the subsequent heat exchange pipe of the heat pump unit.

[0024] Working principle: After entering the head pipe 11 through the external sewage pipe, the electrically controlled valve and the one-way valve, sewage first flows through the rotating screen assembly 2. At this point, the disc consisting of eight sets of screen plates 24 is tightly attached to the outer ring 23 by the spring-loaded levers of the guide assembly 25. Large impurities in the sewage are intercepted by the screen plates 24, while the filtered water continues to flow to the tail pipe 12. Inside the tail pipe 12, the impeller ring 3 rotates, driven by the water flow. This power is transmitted through the transmission assembly 4: the impeller ring 3 drives the ring frame 41 and the ring gear, which is then transmitted to the reduction gear 43 through the meshing of gears 42. This ultimately drives the screen shaft 21 to rotate at a low speed, causing the inner ring frame 22, outer ring 23, and screen plates 24 to rotate synchronously.

[0025] The intercepted dirt is carried along the rotating grate assembly 2 into the clean chamber of the cleaning tank 8. At this point, the bubble erosion mechanism activates: the submersible pump 6 at the bottom of the storage tank 5 pumps the deposited viscous dirt and sewage mixture into the venturi tube 7. As the sewage flows through the throat of the venturi tube 7, air is drawn in due to the pressure differential, forming a gas-liquid mixed flow. The water, laden with bubbles, is ejected at high speed from the outlet of the venturi tube 7 onto the surface of the grate plate 24 within the clean chamber. The impact force generated by the bursting bubbles peels away any remaining dirt. The cleaned dirt is discharged into the sedimentation tank through the sewage outlet 82 at the bottom of the clean chamber, while the filtered water flows through the outlet 51 of the storage tank 5 into the subsequent heat pump system.

[0026] When the fiber concentration in municipal sewage, food processing wastewater, or other wastewater fluctuates significantly, the entanglement rate of grid plate 24 far exceeds the automatic cleaning capacity. Therefore, redundant alarm components are used. If a large amount of fiber contaminants entangle grid plate 24 for a short period of time, causing blockage, the flow resistance of the water discharged from the Venturi tube 7 pushes grid plate 24 to the right along the inner ring frame 22, triggering contact sensor 9, which in turn closes the electronically controlled valve of the sewage inlet pipe and sounds an alarm. At this point, the entire filtration device shuts down, and wastewater containing a large amount of fiber contaminants is no longer allowed to enter the heat exchange system, protecting the safety of the entire heat exchange system.

[0027] This mechanism effectively mitigates the following risks: If fiber contaminants enter the heat exchanger, they can entangle the inner walls of the heat exchange tubes or accumulate to form a "contaminant layer," narrowing or even completely blocking the water flow path and significantly reducing heat exchange efficiency. Fiber entanglement in the pump impeller can cause overload and heating of the motor, accelerating impeller bearing wear and even mechanical failure over time. This application intercepts high-risk fiber contaminants at the front end of the filtration device, ensuring that the core components of the heat pump system (the water pump and heat exchanger) are not contaminated, thus preventing cascading failures at the source.

[0028] If it is necessary to reactivate, the maintenance personnel open the box cover 81, release the limit of the guide component group 25 on the grid plate 24, and then remove and clean the blocked grid plate 24. After cleaning, reset the grid plate 24 and restart the system to resume the filtering function.

[0029] The entire process implements closed-loop control of sewage impurity interception, rotational self-cleaning, and abnormal blockage alarm, ensuring efficient and stable operation of the heat pump system.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A sewage source heat pump filtration device, characterized in that: include: An interception mechanism is provided at the front end of the heat pump system and is used to intercept large-volume debris in the sewage. The interception mechanism includes a sewage pipe assembly, a rotating grille assembly, an impeller ring, a transmission assembly, and a cleaning box; The bubble erosion mechanism is used to remove residual dirt from the grille surface, and includes a storage tank, a submersible pump, and a venturi tube. The storage tank receives sewage that penetrates the rotating grille assembly, and the submersible pump extracts dirt from the bottom of the storage tank and forms a gas-liquid mixed flow through the venturi tube to impact the grille plate in the cleaning chamber. An alarm component includes a contact sensor, an electric control valve, and an alarm. The contact sensor responds to a grid plate displacement trigger signal to close the electric control valve and sound an alarm. The kinetic energy transfer component uses the sewage flow to drive the impeller ring to rotate, and after being decelerated by the transmission component, it drives the rotating grille component to rotate, which is used to drive the continuous operation of the interception mechanism.

2. A sewage source heat pump filtration device according to claim 1, characterized in that: The sewage pipe assembly includes a head pipe and a tail pipe, the head pipe is connected to the electric control valve, the electric control valve is connected to the sewage inlet pipe, the tail pipe is rotatably connected to the impeller ring, the head pipe and the tail pipe are fixed in the cleaning box and are in sliding contact with the rotating grille assembly.

3. A sewage source heat pump filtration device according to claim 2, characterized in that: The rotating grille assembly includes a grille shaft, an inner ring frame, an outer ring, multiple groups of grille plates and a guide component group; the grille shaft is rotatably connected to the cleaning box, the inner ring frame is fixed to the outer wall of the grille shaft and is connected to the outer ring through a bracket rod; the grille plate is slidably connected to the inner ring frame through a slide groove, and multiple groups of grille plates form a complete disc; the guide component group is arranged on the outer ring, including a rotary buckle and a spring pressure rod, and the spring pressure rod abuts against the grille plate to make it fit the outer ring.

4. The sewage source heat pump filtration device according to claim 3, characterized in that: The rotary buckle of the guide component group is rotatably connected to the outer ring, the end of the rotary buckle is L-shaped and fixed to the spring pressure rod, the corresponding positions of the grille plate and the outer ring are provided with grooves, and when the rotary buckle is embedded in the groove, the spring pressure rod presses the grille plate to limit the position.

5. The sewage source heat pump filtration device according to claim 1, characterized in that: The impeller ring is a circular ring structure, coaxially rotatably connected to the tail pipe, and the outer wall of the impeller ring is fixedly connected to the ring frame of the transmission assembly.

6. The sewage source heat pump filtration device according to claim 1, characterized in that: The transmission assembly includes a ring frame, a gear and a reduction box. The ring frame engages with the gear through a gear ring. The gear is connected to the input end of the reduction box. The output end of the reduction box drives the grille shaft to rotate.

7. The sewage source heat pump filtration device according to claim 1, characterized in that: The accumulation box is provided with a water outlet connected to the subsequent heat pump pipeline. The bottom is sucked by a submersible pump to suck out the deposited pollutants. The throat of the venturi tube sucks in air to form a gas-liquid mixed flow, which is sprayed into the cleaning box to impact the surface of the grid plate.

8. The sewage source heat pump filtration device according to claim 1, characterized in that: The contact sensor is installed in the cleaning box and responds to the grid plate displacement trigger signal. The bottom of the cleaning box is provided with a sewage outlet connected to the sedimentation tank, and the top is provided with a detachable box cover for maintenance.

9. The sewage source heat pump filtration device according to claim 8, characterized in that: When the box cover is opened, the guide component assembly is disassembled and the buckle is used to facilitate the removal of the blocked grille plate.

10. The sewage source heat pump filtration device according to claim 1, characterized in that: The bubble erosion mechanism and the alarm component work together to form a closed-loop control through bubble stripping, dirt precipitation and blockage warning, thereby ensuring continuous and efficient operation of the heat pump system.

Images