Rotational flow anti-deposition type sewage heat pump device

Abstract

The invention relates to the technical field of sewage heat energy recovery, in particular to a rotational flow anti-deposition type sewage heat pump device which comprises a pump pit mechanism which comprises a conical core wall, a wall cover, a main water inlet channel and a main outer wall, the conical core wall is conical, the wall cover is installed at the top of the conical core wall, and the main water inlet channel is fixedly connected to the side face of the conical core wall and used for being connected with a sewage trunk canal. The main outer wall is installed at the bottom of the cone core wall, and the axis of the main water inlet channel is tangent to the inner wall edge line of the cone core wall. Sewage is tangentially guided in through the main water inlet channel to form spiral flow in the conical core wall, centrifugal force is matched with the collecting mechanism to unidirectionally filter the collecting groove to accurately intercept solid impurities, and the anti-settling mechanism releases tiny bubbles to prevent dirt deposition.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage heat energy recovery, in particular to a cyclone anti-deposition type sewage heat pump device. BACKGROUND

[0002] In a sewage source heat pump system, the sewage pump pit is a key link connecting the sewage main and the heat pump unit, and bears the important functions of collecting sewage, preliminarily filtering impurities and providing pumping power. A coarse grid is arranged at the water inlet position of the sewage pump pit, mainly used for intercepting large-volume pollutants in the sewage, while small-volume pollutants and suspended solids are allowed to pass through. Small-volume pollutants and suspended solids can be pumped into the subsequent sewage heat pump system by the water pump in the pump pit.

[0003] For fiber pollutants in the sewage, a cutting knife rotating together with the impeller is arranged at the bottom of the sewage pump for crushing such pollutants. However, for small-volume hard impurities (such as stones, metal scraps, branches, glass fragments, etc.) widely existing in the sewage, the coarse grid cannot effectively block them. Such impurities have the following characteristics: complex source, including mud and sand brought in by the road flow in urban sewage, construction waste, metal processing scraps in industrial wastewater, and hard waste in household garbage; physical danger, high hardness (such as quartz sand with Mohs hardness of 7), irregular shape, causing abrasive wear and impact load to the cutting knife.

[0004] The conventional coarse grid in the prior art can only intercept large-size entangled objects, and lacks effective blocking for small-volume hard impurities (such as stones, metal scraps, branches, etc.) commonly existing in the sewage, which leads to the entry of such impurities into the water pump and subsequent heat exchange equipment along with the sewage, causing equipment wear, blockage and other faults; mud and suspended solids in the sewage are prone to deposition at the bottom of the pump pit, requiring frequent manual dredging. SUMMARY

[0005] In order to overcome the above technical problems, the purpose of the present application is to provide a cyclone anti-deposition type sewage heat pump device to solve the problems of the conventional coarse grid being able to only intercept large-size entangled objects, lacking effective blocking for small-volume hard impurities, and mud and suspended solids in the sewage being prone to deposition at the bottom of the pump pit, requiring frequent manual dredging, and also causing equipment wear and blockage.

[0006] To achieve the above purpose, the present application provides the following technical solutions: The application discloses a kind of vortex deposition prevention type sewage heat pump devices, including, wherein: pump pit mechanism, contain conical wall, wall cover, main water inlet channel and main outer wall, the conical wall is conical, wall cover is installed on the top of conical wall, main water inlet channel is fixedly connected to the side of conical wall and is used to connect sewage trunk, main outer wall is installed on the bottom of conical wall, the axis of the main water inlet channel is tangent to the inner wall edge line of conical wall, so that the sewage entering the conical wall forms spiral flow;Collection mechanism is arranged in the central region of the conical wall inside pump pit mechanism, contain middle cylinder and extrusion mechanism, the surface of the middle cylinder is uniformly provided with multiple groups of convex components, the convex component contains convex body, and the collection groove is arranged in the convex body, which is communicated with the inside and outside of the middle cylinder, the size of the inlet end of the collection groove is larger than that of the outlet end, for collecting the solid pollutants gathered to the center in the process of sewage spiral flow;Anti-sediment mechanism contains exhaust nozzle and air pipe, exhaust nozzle is installed on the bottom of conical wall and faces upwards, air pipe connects exhaust nozzle and external gas source, for discharging gas bubbles to the sewage area of the bottom of conical wall to prevent solid pollutants from depositing;Sewage pump body is installed in the groove of pump pit mechanism, for pumping the sewage after the solid pollutants are collected by the collection mechanism in the conical wall;Wherein, the extrusion mechanism is installed in the inside of the middle cylinder, for compacting the solid pollutants collected in the middle cylinder before cleaning.

[0007] Preferably, the middle cylinder is combined by detachable upper and lower shells, and a sealing ring and a bolt connection are used at the connecting position of the upper and lower shells.

[0008] Preferably, the extrusion mechanism comprises a waterproof motor, a lead screw, a ring frame, a leaf plate and a guide rod.

[0009] Preferably, the waterproof motor is installed on the top of the middle cylinder through a support, both ends of the lead screw are rotatably connected to the top and the bottom of the middle cylinder respectively, and the lead screw is fixedly connected to the working end of the waterproof motor.

[0010] Preferably, the ring frame is connected to the lead screw through a nut pair, the guide rod is fixedly connected between the top and the bottom of the middle cylinder, and the ring frame is in sliding contact with the guide rod through a through hole.

[0011] Preferably, a slight gap is formed between the outer wall of the ring frame and the inner wall of the middle cylinder, and the slight gap is only used for sewage.

[0012] Preferably, the leaf plate is rotatably connected to the bottom of the ring frame, and a coil spring is arranged at the rotatable connecting position of the leaf plate and the ring frame, and the coil spring is used to reset the leaf plate to fit the bottom of the ring frame.

[0013] Preferably, when the ring frame is driven to move upwards by the lead screw, the leaf plate is rotated under the resistance of the sewage in the middle cylinder to make the coil spring store energy and contract; when the ring frame is driven to move downwards by the lead screw, the leaf plate is blocked by the ring frame and fits the bottom of the ring frame under the pushing force of the coil spring.

[0014] Preferably, the exhaust nozzle of the anti-sediment mechanism is used to disperse the gas into small bubbles and discharge.

[0015] Preferably, the sewage pump body is installed at the right side of the conical core wall.

[0016] Compared with the prior art, the present application has the following beneficial effects: By introducing sewage through the tangent of the main water inlet channel, a spiral flow is formed in the conical core wall, and the heavy impurities are gathered towards the center by centrifugal force, and the one-way filtering collection tank of the collection mechanism precisely intercepts various solid impurities, avoiding their entry into the subsequent equipment and reducing the risk of wear and blockage. The anti-sediment mechanism can effectively prevent the deposition of solid sewage by releasing micro-bubbles to disturb the sewage, reducing the frequency of manual dredging; The extrusion mechanism can compact the collected impurities before cleaning, avoiding the backflow of impurities carried by the sewage during hoisting, improving the maintenance efficiency and reducing the downtime; The middle cylinder adopts a detachable sealing structure for easy and fast maintenance, and the linkage leaf plate design of the extrusion mechanism can adaptively move up and down, and when moving down, it can extrude the particles in the sewage, and when moving up, it will not extrude the particles to the top of the collection mechanism. The spiral flow does not require additional power and relies on the kinetic energy of the sewage itself to achieve impurity separation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure; Figure 2 is a schematic diagram of the overall structure; Figure 3 is a schematic diagram of the structure inside the wall cover; Figure 4 is a schematic diagram of the structure inside the main outer wall; Figure 5 is a schematic diagram of the cross-sectional structure of the collection mechanism; Figure 6 is a schematic diagram of the cross-sectional structure of the outer convex component; Figure 7 is a schematic diagram of the structure of the extrusion mechanism; Figure 8 is a schematic diagram of the structure of the extrusion mechanism when the ring frame rises.

[0018] In the figure: 1, pump pit mechanism; 11, conical core wall; 12, wall cover; 13, main water inlet channel; 14, main outer wall; 2, collection mechanism; 21, middle cylinder; 211, outer convex component; 2111, convex body; 2112, collection tank; 22, extrusion mechanism; 221, waterproof motor; 222, lead screw; 223, ring frame; 224, leaf plate; 225, guide rod; 3, anti-sediment mechanism; 4, sewage pump body. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0020] An embodiment provided by the present application comprises: A vortex deposition-preventing sewage heat pump device comprises: Referring to Figure 1 and Figure 2 , the pump pit mechanism 1 comprises a conical wall 11, a wall cover 12 is installed on the top of the conical wall 11, a main water inlet channel 13 is fixedly connected to the side surface of the conical wall 11, the main water inlet channel 13 is used for connecting a sewage trunk, the conical wall 11 is in a conical shape, and a main outer wall 14 is installed on the bottom of the conical wall 11; Referring to Figure 2 and Figure 6 , the collecting mechanism 2 comprises a middle cylinder 21 and a squeezing mechanism 22, a plurality of groups of outer convex components 211 are uniformly arranged on the surface of the middle cylinder 21, the outer convex component 211 comprises a convex body 2111, a collecting groove 2112 is arranged in the convex body 2111, the collecting groove 2112 is in communication between the inside and the outside of the middle cylinder 21, the collecting groove 2112 is an outlet end towards the inside of the middle cylinder 21, the collecting groove 2112 is an inlet end towards the outside of the middle cylinder 21, the size of the inlet end of the collecting groove 2112 is greater than that of the outlet end, solid pollutants outside are more easily pushed into the middle cylinder 21 through the collecting groove 2112 due to the large size of the inlet end, and the solid pollutants in the middle cylinder 21 are difficult to go out through the collecting groove 2112 due to the small size of the outlet end, and thus the solid pollutants are collected in the middle cylinder 21, the middle cylinder 21 is composed of an upper shell and a lower shell, and the connecting position is connected by using a sealing ring and a bolt, and the sealing performance is good; Referring to Figure 7 and Figure 8, extrusion mechanism 22, the extrusion mechanism 22 includes waterproof motor 221, the waterproof motor 221 is installed at the top of the middle cylinder body 21 through the support, the working end of the waterproof motor 221 is fixedly connected with the lead screw 222, the two ends of the lead screw 222 are rotatably connected with the top and bottom of the middle cylinder body 21 respectively, the lead screw 222 is connected with the ring frame 223 through the nut pair, the ring frame 223 is in sliding contact with the guide rod 225 through the through hole, the guide rod 225 is fixedly connected between the top and bottom of the middle cylinder body 21, the bottom of the ring frame 223 is rotatably connected with the leaf plate 224, and a coil spring is arranged at the rotatable connection position, the coil spring is used for resetting the leaf plate 224 to make the leaf plate 224 adhere to the ring frame 223, when the ring frame 223 is driven to move upward by the lead screw 222, the leaf plate 224 will rotate under the resistance of the sewage in the middle cylinder body 21, and the coil spring at the rotatable connection position will be contracted to store energy, and when the ring frame 223 is driven to move downward by the lead screw 222, the leaf plate 224 will be blocked by the ring frame 223, and the leaf plate 224 adheres to the bottom of the ring frame 223 in cooperation with the thrust of the coil spring.

[0021] It should be noted that there is a slight gap between the outer wall of the ring frame 223 and the inner wall of the middle cylinder body 21, and the gap is used to pass sewage, but cannot pass solid pollutants, and then when the ring frame 223 moves downward in the middle cylinder body 21, since the leaf plate 224 adheres to the ring frame 223, the ring frame 223 and the leaf plate 224 form a complete disc, which pushes all the solid pollutants in the middle cylinder body 21 downward, and the sewage in the middle cylinder body 21 is discharged in the gap between the middle cylinder body 21 and the ring frame 223, and the solid pollutants that cannot be discharged are extruded to the inner wall bottom of the middle cylinder body 21 by the leaf plate 224 and the ring frame 223, after the extrusion is completed, the collection mechanism 2 is lifted from the pump pit mechanism 1 by the external crane, and the middle cylinder body 21 after being lifted can be disassembled and cleaned, during the cleaning, the leaf plate 224 and the ring frame 223 are controlled to rise to the top of the inner wall of the middle cylinder body 21, and the extrusion of the ring frame 223 and the leaf plate 224 to the solid pollutants is mainly to avoid the solid pollutants mixed with sewage from flowing out of the collection groove 2112 during the process of lifting the collection mechanism 2 out of the water, at this time, the outflow will flow back into the conical core wall 11, so the ring frame 223 and the leaf plate 224 are designed to extrude the pollutants to the bottom of the inner wall of the middle cylinder body 21, and then the collection mechanism 2 is lifted out.

[0022] The anti-sinking mechanism 3 comprises an exhaust nozzle and an air pipe, wherein the exhaust nozzle is installed at the bottom of the conical core wall 11, the working end of the exhaust nozzle faces upward, and the air pipe is connected between the exhaust nozzle and the external air pump. The air pump works to input gas into the exhaust nozzle through the air pipe, the exhaust nozzle disperses the gas into a large number of small bubbles and discharges the bubbles into the sewage in the conical core wall 11. Since the exhaust nozzle is located at the bottom of the conical core wall 11, the bubbles float upward to disturb the solid pollutants deposited at the bottom, so that the solid pollutants float upward to avoid sedimentation.

[0023] Sewage pump body 4, the sewage pump body 4 is installed in the recess provided by pump pit mechanism 1, and sewage in the conical wall 11 is pumped into the subsequent sewage heat exchange equipment through the pipeline when working.

[0024] Working principle: Sewage enters the inside of the conical wall 11 of the pump pit mechanism 1 through the main water inlet channel 13, and since the axis of the main water inlet channel 13 is tangent to the inner wall edge line of the conical wall 11, the sewage forms a spiral flow in the conical wall 11. The spiral flow causes the solid particles in the sewage to gather in the central area and come into contact with the collection mechanism 2 located in the center. The solid pollutants enter the inside of the middle cylinder 21 through the collection groove 2112 of the outwardly convex component 211 of the middle cylinder 21, and the structure of the collection groove 2112 with a large inlet end and a small outlet end makes it easy for the pollutants to enter but difficult for them to exit, thereby achieving the collection of pollutants. The anti-sediment mechanism 3 continuously discharges air bubbles to the bottom of the conical wall 11 through the air outlet, and the air bubbles float and disturb the sewage, preventing the solid pollutants from settling at the bottom.

[0025] The sewage pump body 4 then extracts sewage from the inside of the conical wall 11, and most of the solid particles in the sewage at this time will gather in or near the middle cylinder 21, thereby effectively reducing the wear and blockage risk of the solid particles to the sewage pump body 4 and subsequent pipeline equipment.

[0026] Before cleaning, start the waterproof motor 221 of the extrusion mechanism 22 to drive the lead screw 222 to rotate, which drives the ring frame 223 to move downward along the guide rod 225; at this time, the leaf plate 224 tightly adheres to the bottom of the ring frame 223 to form a closed disc surface under the action of the curved spring, extruding and compacting the solid pollutants collected in the middle cylinder 21 to the bottom, while the sewage is discharged through the tiny gap between the ring frame 223 and the inner wall of the middle cylinder 21. After compacting the pollutants, the entire collection mechanism 2 is lifted away from the pump pit mechanism 1 by an external crane for cleaning and maintenance.

[0027] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalents of the claims are intended to be encompassed by the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A cyclone anti-sedimentation sewage heat pump device, including, characterized by: The pump pit mechanism includes a conical core wall, a wall cover, a main water inlet channel and a main outer wall. The conical core wall is conical, the wall cover is installed on the top of the conical core wall, the main water inlet channel is fixedly connected to the side of the conical core wall and is used to connect to the sewage main channel, and the main outer wall is installed at the bottom of the conical core wall. The axis of the main water inlet channel is tangent to the inner wall edge line of the conical core wall, so that the sewage entering the conical core wall forms a spiral flow; The collecting mechanism is arranged in the central area of ​​the conical core wall of the pump pit mechanism, and includes a middle cylinder and an extrusion mechanism. The surface of the middle cylinder is evenly provided with multiple groups of convex components. The convex components include a convex body, and the convex body is provided with a collecting groove connecting the inside and outside of the middle cylinder. The inlet end of the collecting groove is larger than the outlet end, and is used to collect solid pollutants gathered toward the center during the spiral flow of sewage; The anti-sinking mechanism includes an exhaust nozzle and an air pipe. The exhaust nozzle is installed at the bottom of the cone core wall and faces upward. The air pipe connects the exhaust nozzle with an external air source and is used to discharge bubbles into the sewage area at the bottom of the cone core wall to prevent solid dirt from settling. The sewage pump body is installed in the groove of the pump pit mechanism and is used to extract the sewage from the cone core wall after the solid pollutants are collected by the collection mechanism; The squeezing mechanism is installed inside the middle cylinder and is used to compact the solid waste collected in the middle cylinder before cleaning.

2. The cyclone anti-deposition type sewage heat pump device according to claim 1, characterized in that: The middle cylinder is composed of a detachable upper and lower shell bodies, and the upper and lower shell bodies are connected by sealing rings and bolts.

3. The cyclone anti-sedimentation sewage heat pump device according to claim 1, characterized in that: The extrusion mechanism comprises a waterproof motor, a screw rod, a ring frame, a blade plate and a guide rod.

4. The cyclone anti-sedimentation sewage heat pump device according to claim 3, characterized in that: The waterproof motor is installed on the top of the middle cylinder through a bracket, and the two ends of the screw rod are rotatably connected to the top and bottom of the middle cylinder respectively, and the screw rod is fixedly connected to the working end of the waterproof motor.

5. The cyclone anti-sedimentation type sewage heat pump device according to claim 4, characterized in that: The ring frame is connected to the screw rod through a nut pair, the guide rod is fixedly connected between the top and the bottom of the middle cylinder, and the ring frame is slidably contacted with the guide rod through the through hole.

6. The cyclone anti-sedimentation sewage heat pump device according to claim 5, characterized in that: There is a tiny gap between the outer wall of the ring frame and the inner wall of the middle cylinder, and the tiny gap is only for sewage to pass through.

7. The cyclone anti-deposition type sewage heat pump device according to claim 3, characterized in that: The blade is rotatably connected to the bottom of the ring frame, and a curved spring is provided at the rotational connection position between the blade and the ring frame. The curved spring is used to reset the blade to fit the bottom of the ring frame.

8. The cyclone anti-sedimentation sewage heat pump device according to claim 7, characterized in that: When the ring frame is driven upward by the screw, the blade rotates due to the resistance of sewage in the middle cylinder, causing the curved spring to store force and contract; when the ring frame is driven downward by the screw, the blade is blocked by the ring frame and fits against the bottom of the ring frame under the thrust of the curved spring.

9. The cyclone anti-sedimentation sewage heat pump device according to claim 1, characterized in that: The exhaust nozzle of the anti-sinking mechanism is used to disperse the gas into small bubbles for discharge.

10. The cyclone anti-sedimentation type sewage heat pump device according to claim 1, characterized in that: The sewage pump body is installed on the right side of the cone core wall.

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