A cyclone anti-deposition type sewage heat pump device

Abstract

The present application relates to sewage heat recovery technical field, specifically to a cyclone anti-deposition sewage heat pump device, including pump pit mechanism, containing conical core wall, wall cover, main water inlet channel and main outer wall, the conical core wall is conical, wall cover is installed on the top of conical core wall, main water inlet channel is fixedly connected to the side surface of conical core wall and is used for connecting sewage trunk, main outer wall is installed on the bottom of conical core wall, the axis of main water inlet channel is tangent to the inner wall edge line of conical core wall.This application forms spiral flow in conical core wall by the tangential introduction of sewage in main water inlet channel, uses centrifugal force to cooperate with the one-way filtration of collection mechanism to intercept solid impurities accurately, and prevents the deposition of dirt by releasing tiny bubbles with anti-sedimentation mechanism.

Description

Technical Field

[0001] This invention relates to the field of wastewater heat energy recovery technology, specifically to a vortex anti-deposition wastewater heat pump device. Background Technology

[0002] In a wastewater source heat pump system, the wastewater pump pit serves as a crucial link connecting the wastewater trunk line and the heat pump unit. It plays an important role in collecting wastewater, initially filtering impurities, and providing pumping power. A coarse screen is installed at the inlet of the wastewater pump pit, which is mainly used to intercept larger volumes of pollutants in the wastewater, while smaller volumes of pollutants and suspended solids are allowed to pass through. These smaller volumes of pollutants and suspended solids can be pumped into the subsequent wastewater heat pump system by the pump in the pump pit.

[0003] For fibrous contaminants in sewage, the bottom of the sewage pump is equipped with a cutting blade that rotates with the impeller to break up such contaminants. However, coarse screens cannot effectively block small, hard impurities that are widely present in sewage (such as stones, metal scraps, tree branches, and glass shards with a particle size ≤20mm). These impurities have the following characteristics: complex sources: urban sewage contains silt and sand carried in by road flow, construction waste, metal processing debris in industrial wastewater, and hard waste in domestic garbage; physical hazards: high hardness (such as quartz sand with a Mohs hardness of 7) and irregular shape, which causes abrasive wear and impact loads on the cutting blade.

[0004] In existing technologies, traditional coarse screens can only intercept large-sized entangled objects, and are not effective in blocking small-volume hard impurities (such as stones, metal fragments, and tree branches) that are commonly found in sewage. As a result, these impurities enter the water pump and subsequent heat exchange equipment with the sewage, causing equipment wear, blockage and other malfunctions. The silt and suspended solids in the sewage are easy to deposit at the bottom of the pump pit, requiring frequent manual dredging. Summary of the Invention

[0005] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a vortex anti-deposition sewage heat pump device to solve the problems mentioned in the background art. Traditional coarse screens can only intercept large-sized entangled objects and lack effective blocking of small-volume hard impurities. Furthermore, silt and suspended solids in sewage are prone to deposit at the bottom of the pump pit, requiring frequent manual dredging and causing equipment wear and blockage.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A vortex-type anti-deposition wastewater heat pump device includes: a pump pit mechanism comprising a conical core wall, a wall cover, a main inlet channel, and a main outer wall. The conical core wall is conical in shape, the wall cover is installed on the top of the conical core wall, the main inlet channel is fixedly connected to the side of the conical core wall and used to connect to a wastewater trunk line, and the main outer wall is installed at the bottom of the conical core wall. The axis of the main inlet channel is tangent to the inner edge line of the conical core wall, so that the wastewater entering the conical core wall forms a spiral flow; a collection mechanism is disposed in the central region inside the conical core wall of the pump pit mechanism, comprising a middle cylinder and a compression mechanism. The surface of the middle cylinder is uniformly provided with multiple sets of outwardly protruding components, each outwardly protruding component comprising a protrusion. The body has a collection trough connecting the inside and outside of the inner cylinder. The inlet end of the collection trough is larger than the outlet end, used to collect solid waste that gathers towards the center during the spiral flow of sewage. An anti-settling mechanism includes an exhaust nozzle and an air pipe. The exhaust nozzle is installed at the bottom of the conical wall and faces upward. The air pipe connects the exhaust nozzle to an external air source, used to discharge air bubbles into the sewage area at the bottom of the conical wall to prevent solid waste from settling. A sewage pump body is installed in the groove of the pump pit mechanism, used to extract sewage from the conical wall after the collection mechanism has collected solid waste. The squeezing mechanism is installed inside the inner cylinder, used to compact the solid waste collected inside the inner cylinder before cleaning.

[0008] Preferably, the middle cylinder is composed of detachable upper and lower shells, and the connection between the upper and lower shells is made using a sealing ring and bolts.

[0009] Preferably, the extrusion mechanism includes a waterproof motor, a lead screw, a ring frame, a blade, and a guide rod.

[0010] Preferably, the waterproof motor is mounted on the top of the middle cylinder via a bracket, and the two ends of the lead screw are rotatably connected to the top and bottom of the middle cylinder, respectively, with the lead screw fixedly connected to the working end of the waterproof motor.

[0011] Preferably, the ring frame is connected to the lead screw via a nut pair, and the guide rod is fixedly connected between the top and bottom of the middle cylinder. The ring frame slides in contact with the guide rod through a through hole.

[0012] Preferably, there is a fine gap between the outer wall of the ring frame and the inner wall of the middle cylinder, which allows sewage to pass through only.

[0013] Preferably, the blade is rotatably connected to the bottom of the ring frame, and a spring is provided at the rotatable connection position between the blade and the ring frame. The spring is used to reset the blade to fit against the bottom of the ring frame.

[0014] Preferably, when the ring frame is driven upward by the lead screw, the blade rotates due to the resistance of the sewage in the middle cylinder, causing the spring to store force and contract; when the ring frame is driven downward by the lead screw, the blade is blocked by the ring frame and adheres to the bottom of the ring frame under the thrust of the spring.

[0015] Preferably, the vent of the anti-sinking mechanism is used to disperse the gas into small bubbles and discharge them.

[0016] Preferably, the sewage pump body is installed on the right side of the conical wall.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Wastewater is introduced tangentially through the main inlet channel, forming a spiral flow inside the conical core wall. Centrifugal force is used to cause heavy impurities to gather towards the center. Combined with the one-way filter collection tank of the collection mechanism, various solid impurities are accurately intercepted, preventing them from entering subsequent equipment and reducing the risk of wear and blockage.

[0019] The anti-sinking mechanism releases tiny bubbles to agitate the wastewater, effectively preventing the deposition of solid waste and reducing the frequency of manual dredging.

[0020] The extrusion mechanism can compact the collected impurities before cleaning, preventing sewage from carrying impurities back during hoisting, improving maintenance efficiency and reducing downtime;

[0021] The middle cylinder adopts a detachable sealing structure for easy and quick maintenance; the linkage blade design of the squeezing mechanism can adaptively move up and down, squeezing the particles in the sewage when moving down, and preventing the particles from being squeezed to the top of the collection mechanism when moving up.

[0022] Spiral flow requires no additional power; it relies on the kinetic energy of the wastewater itself to achieve impurity separation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure;

[0024] Figure 2 This is a schematic diagram of the overall cross-section;

[0025] Figure 3 This is a schematic diagram of the structure inside the wall cover;

[0026] Figure 4 A schematic diagram of the structure inside the main outer wall;

[0027] Figure 5 A cross-sectional view of the collecting mechanism.

[0028] Figure 6 This is a cross-sectional view of the convex component.

[0029] Figure 7 This is a schematic diagram of the extrusion mechanism.

[0030] Figure 8 This is a schematic diagram of the structure when the ring frame in the extrusion mechanism rises.

[0031] In the diagram: 1. Pump pit mechanism; 11. Conical wall; 12. Wall cover; 13. Main inlet channel; 14. Main outer wall; 2. Collection mechanism; 21. Middle cylinder; 211. Outer protrusion assembly; 2111. Protrusion; 2112. Collection trough; 22. Extrusion mechanism; 221. Waterproof motor; 222. Lead screw; 223. Ring frame; 224. Blade; 225. Guide rod; 3. Anti-sinking mechanism; 4. Sewage pump body. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] One embodiment provided by the present invention:

[0034] A vortex anti-deposition wastewater heat pump device, comprising:

[0035] See Figure 1 and Figure 2 The pump pit mechanism 1 includes a conical core wall 11, a wall cover 12 installed on the top of the conical core wall 11, a main water inlet channel 13 fixedly connected to the side of the conical core wall 11, the main water inlet channel 13 being used to connect to the sewage trunk line, the conical core wall 11 being conical in shape, and a main outer wall 14 installed at the bottom of the conical core wall 11.

[0036] See Figure 2 and Figure 6 The collection mechanism 2 includes a middle cylinder 21 and a pressing mechanism 22. Multiple sets of protruding components 211 are evenly distributed on the surface of the middle cylinder 21. Each protruding component 211 includes a protrusion 2111, and a collection groove 2112 is formed in the protrusion 2111. The collection groove 2112 connects the inside and outside of the middle cylinder 21. The end of the collection groove 2112 facing inwards from the middle cylinder 21 is the outlet end, and the end facing outwards from the middle cylinder 21 is the inlet end. The inlet end is larger than the outlet end. Under the push of the water flow, solid waste on the outside is more likely to pass through the collection tank 2112 and enter the middle cylinder 21 due to the larger diameter of the inlet port. However, due to the smaller diameter of the outlet port of the collection tank 2112, the solid waste that enters the middle cylinder 21 is difficult to exit through the collection tank 2112 and will be collected in the middle cylinder 21. The middle cylinder 21 is composed of upper and lower shells, and the connection position is connected by sealing rings and bolts, which has a good sealing performance.

[0037] refer to Figure 7 and Figure 8 The extrusion mechanism 22 includes a waterproof motor 221, which is mounted on the top of the middle cylinder 21 via a bracket. A lead screw 222 is fixedly connected to the working end of the waterproof motor 221. The two ends of the lead screw 222 are rotatably connected to the top and bottom of the middle cylinder 21, respectively. A ring frame 223 is connected to the lead screw 222 via a nut pair. The ring frame 223 slidably contacts a guide rod 225 through a through hole. The guide rod 225 is fixedly connected between the top and bottom of the middle cylinder 21. A blade 224 is rotatably connected to the bottom of the ring frame 223, and a spring is provided at the rotatable connection position. The spring is used to reset the blade 224 so that it fits against the ring frame 223. When the ring frame 223 is driven upward by the lead screw 222, the blade 224 will rotate under the resistance of the sewage in the middle cylinder 21. The spring at the rotatable connection position will store force and contract. When the ring frame 223 is driven downward by the lead screw 222, the blade 224 will be blocked by the ring frame 223. With the thrust of the spring, the blade 224 fits against the bottom of the ring frame 223.

[0038] It should be noted that there is a tiny gap between the outer wall of the ring frame 223 and the inner wall of the middle cylinder 21. This gap is used for sewage to pass through, but not for solid waste. Therefore, when the ring frame 223 moves downward in the middle cylinder 21, the blades 224 adhere to the ring frame 223, forming a complete disc that pushes the solid waste in the middle cylinder 21 downward. The sewage in the middle cylinder 21 will be discharged through the gap between the middle cylinder 21 and the ring frame 223. The solid waste that cannot be discharged will be squeezed to the bottom of the inner wall of the middle cylinder 21 by the blades 224 and the ring frame 223. Afterwards, the collection mechanism 2 is lifted from the pump pit mechanism 1 by an external crane. The middle cylinder 21 can be disassembled and cleaned after being lifted. During cleaning, the blade 224 and the ring frame 223 are controlled to rise to the top of the inner wall of the middle cylinder 21. The ring frame 223 and the blade 224 squeeze the solid dirt. This is mainly to prevent the solid dirt mixed with sewage from flowing out of the collection tank 2112 during the process of lifting the collection mechanism 2 to drain the water. At this time, the outflow will flow back into the conical wall 11. Therefore, the ring frame 223 and the blade 224 are designed to squeeze the dirt to the bottom of the inner wall of the middle cylinder 21 before the collection mechanism 2 is lifted out.

[0039] The anti-sinking mechanism 3 includes an exhaust nozzle and an air pipe. The exhaust nozzle is installed at the bottom of the conical wall 11 with its working end facing upwards. The air pipe connects the exhaust nozzle to an external air pump. When the air pump is working, it will input gas into the exhaust nozzle through the air pipe. The exhaust nozzle will disperse the gas into a large number of small bubbles and discharge them into the sewage in the conical wall 11. Since the exhaust nozzle is located at the bottom of the conical wall 11, the rising bubbles will disturb the solid dirt deposited at the bottom, causing it to float to the surface and preventing it from settling.

[0040] The sewage pump body 4 is installed in the groove of the pump pit mechanism 1. When working, it will draw sewage from the conical wall 11 and pump it into the subsequent sewage heat exchange equipment through the pipeline.

[0041] Working principle:

[0042] Wastewater enters the conical wall 11 of the pump pit mechanism 1 through the main inlet channel 13. Since the axis of the main inlet channel 13 is tangent to the inner edge of the conical wall 11, the wastewater forms a spiral flow within the conical wall 11. This spiral flow causes solid particles in the wastewater to accumulate towards the central area and come into contact with the collection mechanism 2 located at the center. Solid particles enter the interior of the central cylinder 21 through the collection trough 2112 of the protruding component 211 on the surface of the central cylinder 21. The structure of the collection trough 2112, with a large inlet and a small outlet, makes it easy for particles to enter but difficult to exit, thus achieving particle collection. The anti-settling mechanism 3 continuously discharges air bubbles to the bottom of the conical wall 11 through the vent. These air bubbles rise and disturb the wastewater, preventing solid particles from settling at the bottom.

[0043] The sewage pump body 4 draws sewage from inside the conical wall 11. At this time, most of the solid particles in the sewage will accumulate inside or near the middle cylinder 21, thus effectively reducing the risk of wear and blockage of the sewage pump body 4 and subsequent pipeline equipment by solid particles.

[0044] Before cleaning, the waterproof motor 221 of the squeezing mechanism 22 drives the lead screw 222 to rotate, causing the ring frame 223 to move downwards along the guide rod 225. At this time, the blade 224, under the action of the spring, tightly adheres to the bottom of the ring frame 223 to form a closed disc, squeezing and compacting the solid waste collected in the middle cylinder 21 to the bottom. Simultaneously, wastewater is discharged through the tiny gaps between the ring frame 223 and the inner wall of the middle cylinder 21. After compacting the waste, the entire collection mechanism 2 is lifted from the pump pit mechanism 1 by an external crane for cleaning and maintenance.

[0045] 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 implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vortex-type anti-deposition wastewater heat pump device, Includes, characterized in that: The pump pit mechanism includes a conical core wall, a wall cover, a main inlet channel, and a main outer wall. The conical core wall is conical in shape. The wall cover is installed on the top of the conical core wall. The main inlet channel is fixedly connected to the side of the conical core wall and is used to connect to the sewage trunk line. The main outer wall is installed at the bottom of the conical core wall. The axis of the main inlet channel is tangent to the inner edge line of the conical core wall so that the sewage entering the conical core wall forms a spiral flow. The collection mechanism is located in the central area inside the conical wall of the pump pit mechanism. It includes a middle cylinder and a squeezing mechanism. Multiple sets of outwardly protruding components are evenly distributed on the surface of the middle cylinder. Each outwardly protruding component includes a protrusion. A collection groove communicating with the inside and outside of the middle cylinder is opened in the protrusion. The inlet end of the collection groove is larger than the outlet end. It is used to collect solid waste that gathers towards the center during the spiral flow of sewage. The anti-settling mechanism includes an exhaust nozzle and an air pipe. The exhaust nozzle is installed at the bottom of the conical wall and faces upward. The air pipe connects the exhaust nozzle to an external air source and is used to discharge air bubbles into the sewage area at the bottom of the conical wall to prevent solid waste from settling. The sewage pump body is installed in the groove of the pump pit mechanism and is used to draw sewage from the conical wall after the collection mechanism has collected solid waste. The extrusion mechanism is installed inside the middle cylinder and is used to compact the solid contaminants collected inside the middle cylinder before cleaning.

2. The vortex anti-deposition wastewater heat pump device according to claim 1, characterized in that: The middle cylinder is composed of detachable upper and lower shells, which are connected by sealing rings and bolts.

3. The vortex anti-deposition wastewater heat pump device according to claim 1, characterized in that: The extrusion mechanism includes a waterproof motor, a lead screw, a ring frame, a blade, and a guide rod; The waterproof motor is mounted on the top of the middle cylinder via a bracket, and the two ends of the lead screw are rotatably connected to the top and bottom of the middle cylinder, respectively. The lead screw is fixedly connected to the working end of the waterproof motor. The ring frame is connected to the lead screw via a nut pair, and the guide rod is fixedly connected between the top and bottom of the middle cylinder. The ring frame slides in contact with the guide rod through the through hole. The blade is rotatably connected to the bottom of the ring frame.

4. The vortex anti-deposition wastewater heat pump device according to claim 3, characterized in that: There is a tiny gap between the outer wall of the ring frame and the inner wall of the middle cylinder, which allows sewage to pass through only.

5. A vortex anti-deposition wastewater heat pump device according to claim 3, characterized in that: A spring is provided at the rotatable connection point between the blade and the ring frame. The spring is used to reset the blade to fit against the bottom of the ring frame.

6. A vortex anti-deposition wastewater heat pump device according to claim 5, characterized in that: When the ring frame is driven upward by the lead screw, the blade rotates due to the resistance of the sewage in the middle cylinder, causing the spring to store force and contract; when the ring frame is driven downward by the lead screw, the blade is blocked by the ring frame and adheres to the bottom of the ring frame under the thrust of the spring.

7. A vortex anti-deposition wastewater heat pump device according to claim 1, characterized in that: The vent of the anti-sinking mechanism is used to disperse the gas into small bubbles and discharge them.

8. A vortex anti-deposition wastewater heat pump device according to claim 1, characterized in that: The sewage pump body is installed on the right side of the conical wall.

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