Water taking lifting pool of sewage source heat pump system with coarse filtration and automatic decontamination functions

Abstract

The invention relates to the field of sewage treatment, in particular to a sewage source heat pump system water taking lifting pool with coarse filtration and automatic decontamination, which comprises a lifting pool, and a sewage inlet chamber, a sewage buffer pool and a sewage recession chamber are sequentially arranged in the lifting pool. The heights of the inner lower surfaces of the sewage inlet chamber, the sewage buffer pool and the sewage recession chamber are gradually reduced from left to right, the inner lower surface of the sewage recession chamber is higher than the sewage inlet chamber and the sewage buffer pool, and the inner lower surface of the sewage inlet chamber is higher than the inner lower surface of the sewage buffer pool; the inner lower surface of the sewage inlet chamber is lower than the inner lower surface of the sewage outlet chamber; due to the adoption of the mechanical coarse screen, the problem that a pipeline is blocked by large-size dirt is effectively solved, and manual real-time monitoring and regular cleaning are needed, so that the large-size dirt is automatically cleaned, and the dirt is conveyed to the ground through the mechanical coarse screen.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to a sewage source heat pump system water intake and lifting tank with coarse filtration and automatic pollution removal. Background Art

[0002] Wastewater heat is recognized as a clean energy with high recovery and utilization value. The amount of urban sewage discharged is huge, which contains a large amount of waste heat energy. One of the main routes is to directly feed back through energy recovery or output in the form of heating and cooling.

[0003] The utilization of waste heat from sewage has received more and more attention. All regions have made full use of waste heat resources from sewage, and require that sewage source heat pump systems should be used preferentially near sewage trunk canals and sewage treatment plants where waste heat can be utilized.

[0004] Compared with soil source heat pump system and air source heat pump system, sewage source heat pump system has distinct characteristics of energy saving, environmental protection and economy. With the acceleration of urbanization, it has greater development space and market prospects.

[0005] Although there are some application cases of sewage source heat pump technology at home and abroad, the market is developing slowly. Various impurities and suspended matter in sewage can cause problems such as pipeline blockage and low heat exchange efficiency. The utilization of waste heat requires a lot of manpower for cleaning, operation and maintenance.

[0006] The core components in the sewage source heat pump system that are in direct contact with sewage include the sewage intake device and the sewage source heat exchanger.

[0007] Existing sewage water extraction technologies include gravity sewage diversion / discharge channels, pressure diversion / discharge systems with buffer tanks, square buffer tank water extraction, etc., which have problems such as large civil engineering workload, bulky buffer tanks, and high maintenance costs, which limit the development of sewage source heat pump systems.

[0008] If effective methods can be taken to reduce the size of the sewage buffer tank, improve the degree of automation, reduce civil engineering costs, and reduce operating and maintenance costs, it can effectively help promote the application of sewage source heat pump technology. Summary of the invention

[0009] The present application provides a sewage source heat pump system water intake and lifting tank with coarse filtration and automatic pollution removal, which solves the problem of handling large-sized dirt and mud in the water source and realizes automatic filtration, thereby reducing maintenance costs and maintenance cycles.

[0010] The technical problem solved by the present invention can be achieved by adopting the following technical solutions: A sewage source heat pump system water intake and lifting tank with coarse filtration and automatic decontamination, comprising: A lifting tank, wherein a sewage inlet chamber, a sewage buffer tank and a sewage retreat chamber are sequentially arranged in the lifting tank, wherein the lower and upper surfaces of the sewage inlet chamber, the sewage buffer tank and the sewage retreat chamber are gradually reduced in height from left to right, and the lower surface of the sewage retreat chamber is higher than the sewage inlet chamber and the sewage buffer tank, the lower surface of the sewage inlet chamber is higher than the lower surface of the sewage buffer tank, and the lower surface of the sewage inlet chamber is lower than the lower surface of the sewage retreat chamber; A conveying channel, which is arranged above the lifting tank and communicated with the sewage buffer tank of the lifting tank; A waterproof retaining wall, which is arranged between the sewage inlet chamber and the sewage buffer tank, and has a filter port; A filter part, the lower end of which is detachably connected to the inner lower surface of the filter port, and the upper end of which extends upward through the transmission channel; A check gate, which is arranged between the sewage buffer tank and the sewage backflow chamber; A collecting tank, which is arranged below the upper end of the filtering part; A sludge extraction part, the sludge extraction part has a pair of sewage inlet ends, the pair of sewage inlet ends are respectively located in the sewage inlet chamber and the lower surface of the sewage buffer tank, and the sewage discharge end of the sludge extraction part is located in the sewage discharge chamber; A water diversion pipe, the water diversion pipe is connected with the sewage inlet chamber; A water return pipe, which is connected to the sewage water return chamber and is located at the lower end of the side wall of the sewage water return chamber, and the water inlet of the water return pipe is lower than the water outlet of the water diversion pipe; A water intake main pipe, the water intake main pipe is connected to the sewage buffer tank; A water return main pipe is connected to the sewage return chamber.

[0011] Further, the filter unit comprises: A coarse grid conveyor belt, a transverse conveyor belt and a driving motor, the filter port is located on one side of the sewage buffer tank and is provided with a pair of grid-mounted water retaining walls, the lower end of the coarse grid conveyor belt is detachably connected to the lower surface of the filter port, the coarse grid conveyor belt extends obliquely upward through the transmission channel, a pair of grid-mounted water retaining walls are located on both sides of the coarse grid conveyor belt, and the two sides of the coarse grid conveyor belt are respectively connected to the pair of grid-mounted water retaining walls, the transverse conveyor belt is arranged above one side of the top of the transmission channel, one end of the transverse conveyor belt is located above the collecting tank, and the other end of the transverse conveyor belt is connected to the top of the coarse grid conveyor belt, the driving motor is arranged above the transmission channel, and the driving motor is respectively connected to the transverse conveyor belt and the coarse grid conveyor belt.

[0012] Furthermore, the water outlet of the water diversion pipe is blocked by a waterproof retaining wall.

[0013] Furthermore, the sludge extraction part includes a pair of extraction units, the sewage inlet chamber and one side of the lower surface of the sewage buffer tank are both provided with sludge pits, the sewage inlet ends of the pair of extraction units are respectively arranged in the pair of sludge pits, and the sewage discharge ends of the pair of extraction units are respectively connected to the sewage backwater chamber; The extraction unit comprises: a sludge pump and a sludge pipe, wherein the sludge pump is arranged in the sludge pit, the sewage discharge end of the sludge pump is connected with the sewage withdrawal chamber through the sludge pipe, and the sludge pipe is located above the sewage withdrawal chamber; The lower surface of the sludge pit is inclined toward the sludge pump side.

[0014] Furthermore, the check gate is a gravity-fed check gate.

[0015] Furthermore, the sewage buffer tank is provided with a maintenance manhole, and ladders are fixed on the side surface of the waterproof retaining wall and in the maintenance manhole.

[0016] The position of the check gate is higher than the water inlet end of the water withdrawal pipe, and the check gate is at the same height as the water diversion pipe and the water withdrawal main pipe.

[0017] The beneficial effect of the present invention is that the use of the anti-collision retaining wall effectively solves the problem that water entering the water diversion pipe will directly rush into the sewage buffer chamber, causing the mechanical coarse screen to be directly impacted and poorly filtered, thereby achieving the staggered installation of the water diversion pipe and the mechanical coarse screen, so that the water source of the water diversion pipe is blocked by the anti-collision retaining wall, reducing the impact of the water flow, and effectively avoiding the excessive sewage flow rate affecting the filtration efficiency.

[0018] The use of a mechanical coarse screen effectively solves the problem of large-sized dirt clogging the pipes and the need for manual real-time monitoring and regular cleaning, thereby achieving automated cleaning of large-sized dirt and transporting the dirt to the ground through the mechanical coarse screen.

[0019] The use of a collection pool effectively solves the problem of dirt accumulation, thereby achieving centralized collection through the collection pool, thereby reducing the cleaning cycle.

[0020] The use of a sludge trough can effectively solve the problem of sludge sedimentation in the sewage inlet chamber and the sewage buffer tank, thereby achieving the goal of inclination of the lower surface of the sewage inlet chamber and the sewage buffer tank, so that the sludge flows to the low-lying end and enters the sludge trough, and then is pumped into the sewage backflow chamber by a sludge pump for discharge.

[0021] Due to the use of water intake mains and water return mains, it is possible to extract sewage with waste heat in the sewage buffer tank through the water intake mains, extract the waste heat of the sewage through the sewage source heat pump, and then send it into the sewage return room through the water return mains to complete the waste heat utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a top cross-sectional view of the present invention.

[0025] In the figure: 1- sewage inlet chamber; 2- sewage buffer tank; 3- sewage backflow chamber; 4- transmission channel; 5- waterproof retaining wall; 6- check gate; 7- collection tank; 8- water diversion pipe; 9- backflow pipe; 10- water intake main pipe; 11- backflow main pipe; 12- coarse grid conveyor belt; 13- horizontal conveyor belt; 14- driving motor; 15- grid installation retaining wall; 16- sludge pit; 17- sludge pump; 18- sludge pipe; 19- maintenance manhole; 20- ladder. DETAILED DESCRIPTION Example 1

[0026] Reference Figure 1-2 , is a schematic diagram of the structure of Example 1 of the present invention, a sewage source heat pump system water intake and lifting tank with coarse filtration and automatic decontamination, comprising: A lifting tank, in which a sewage inlet chamber 1, a sewage buffer tank 2 and a sewage backwater chamber 3 are sequentially arranged, wherein the lower surfaces of the sewage inlet chamber 1, the sewage buffer tank 2 and the sewage backwater chamber 3 are gradually reduced in height from left to right, and the lower surface of the sewage backwater chamber 3 is higher than the sewage inlet chamber 1 and the sewage buffer tank 2, the lower surface of the sewage inlet chamber 1 is higher than the lower surface of the sewage buffer tank 2, and the lower surface of the sewage inlet chamber 1 is lower than the lower surface of the sewage backwater chamber 3; A conveying channel 4, which is arranged above the lifting tank and communicates with the sewage buffer tank 2 of the lifting tank; A waterproof retaining wall 5, which is arranged between the sewage inlet chamber 1 and the sewage buffer tank 2, and has a filter port; A filter part, the lower end of which is detachably connected to the lower surface of the filter port, and the upper end of which passes through the transmission channel 4 and extends upward; A check gate 6, which is arranged between the sewage buffer tank 2 and the sewage backflow chamber 3; A collecting tank 7, which is arranged below the upper end of the filter part; A sludge extraction part, the sludge extraction part has a pair of sewage inlet ends, the pair of sewage inlet ends are respectively located at the lower surface of the sewage inlet chamber 1 and the sewage buffer tank 2, and the sewage discharge end of the sludge extraction part is located in the sewage drain chamber 3; A water diversion pipe 8, the water diversion pipe 8 is connected to the sewage inlet chamber 1; A water return pipe 9, which is connected to the sewage water return chamber 3, and is located at the lower end of the side wall of the sewage water return chamber 3, and the water inlet of the water return pipe 9 is lower than the water outlet of the water diversion pipe 8; A water intake main pipe 10, the water intake main pipe 10 is connected to the sewage buffer tank 2; The water return main pipe 11 is communicated with the sewage return chamber 3 .

[0027] In actual use: sewage is discharged into the sewage inlet chamber 1 through the water diversion pipe 8, and at the same time, the sewage is blocked by the waterproof retaining wall 5, and the sewage fills the sewage inlet chamber 1, and at the same time, part of the mud slurry settles downward, and at the same time, under the action of the inclination of the lower surface of the sewage inlet chamber 1, the mud accumulates to one side, and at the same time, this part of the mud slurry is sent to the sewage withdrawal chamber 3 through the sludge extraction part, and the sewage flows to one side and passes through the filter port. When passing through the filter port, it is filtered by the filter part, so that large-sized dirt is blocked by the filter part, and the dirt is removed by the filter part. It is lifted to the ground through the transmission channel 4 and then sent to the collection tank. The sewage enters the sewage buffer tank 2 through the filter part. The mud slurry is precipitated in the sewage buffer tank 2. Under the action of the inclination of the lower surface of the sewage buffer tank 2, the mud accumulates to one side. At the same time, this part of the mud slurry is sent to the sewage withdrawal chamber 3 through the sludge extraction part. The sewage entering the sewage buffer tank 2 still has temperature. The sewage with residual heat is extracted through the water intake main pipe 10, and the sewage heat is extracted through the sewage source heat pump, and then discharged into the sewage withdrawal chamber 3 through the withdrawal main pipe 11. The utilization of waste heat from sewage is adjusted according to the amount of sewage. When the amount of sewage is small, the water intake of the sewage intake main is reduced. When the amount of sewage is greater than the upper limit of the waste heat utilization water volume, the water level in the sewage buffer tank 2 rises. When it reaches the check gate 6, the check gate 6 is opened under the influence of the lateral water pressure, allowing water to enter the sewage withdrawal chamber, so that part of the sewage is directly discharged into the sewage withdrawal chamber 3 through the check gate 6, and at the same time, it is flushed and mixed with the mud slurry entering the sewage withdrawal chamber 3 by the sewage discharged by the check gate 6 and the sewage discharged by the withdrawal main 11, so that the mud slurry in the sewage withdrawal chamber 3 will not settle, and then be discharged through the withdrawal pipe 9.

[0028] The mud extraction part can prevent the mud slurry in the sewage inlet chamber 1 and the sewage buffer tank 2 from excessive precipitation. Example 2

[0029] Reference Figure 1-2 , the difference of this embodiment is that: the filter unit includes: A coarse grid conveyor belt 12, a transverse conveyor belt 13 and a driving motor 14, the filter port is located on one side of the sewage buffer tank 2 and is provided with a pair of grid-mounted retaining walls 15, the lower end of the coarse grid conveyor belt 12 is detachably connected to the lower surface of the filter port, the coarse grid conveyor belt 12 extends obliquely upward through the transmission channel 4, a pair of the grid-mounted retaining walls 15 are located on both sides of the coarse grid conveyor belt 12, and the two sides of the coarse grid conveyor belt 12 are respectively connected to a pair of grid-mounted retaining walls 15, the transverse conveyor belt 13 is arranged above one side of the top of the transmission channel 4, one end of the transverse conveyor belt 13 is located above the collecting tank 7, and the other end of the transverse conveyor belt 13 is connected to the top of the coarse grid conveyor belt 12, the driving motor 14 is arranged above the transmission channel 4, and the driving motor 14 is respectively connected to the transverse conveyor belt 13 and the coarse grid conveyor belt 12.

[0030] In actual use: large-sized dirt is filtered by the coarse grid conveyor belt 12, so that the large-sized dirt is hung on the coarse grid conveyor belt 12, and at the same time, the coarse grid conveyor belt 12 is driven to rotate by the driving motor 14, so that the dirt moves up with the coarse grid conveyor belt 12, passes through the transmission channel, and then is discharged into the collection tank 7 through the transverse conveyor belt 13.

[0031] During installation, by pouring concrete on the ground, the drive motor 14 and the frame for supporting the coarse grid conveyor belt 12 and the transverse conveyor belt 13 can be effectively and stably installed. At the same time, the coarse grid conveyor belt 12 is installed at an angle so that dirt will not fall vertically. At the same time, the coarse grid conveyor belt 12 is sealed with the grid installation water retaining wall 15 on both sides to prevent water from passing through the gap between the coarse grid conveyor belt 12 and the grid installation water retaining wall 15. At the same time, the coarse grid conveyor belt 12 is connected through the grid installation water retaining wall 15, which also increases the structural strength of the coarse grid conveyor belt 12 and prevents scouring and deformation at the suspended part. This problem can be effectively solved by installing the grid water retaining wall 15. At the same time, the grid installation water retaining wall 15 is a triangular structure, the right-angled side of the side is fixed to the filter port, and the top is fixed to the edge of the transmission channel 4, so that the structural strength of the part of the coarse grid conveyor belt 12 impacted by water is improved. Example 3

[0032] Reference Figure 1-2 The difference of this embodiment is that the water outlet of the water diversion pipe 8 is blocked by the waterproof retaining wall 5.

[0033] In actual use: the water flow of the water diversion pipe 8 is blocked by the waterproof retaining wall 5, and buffered by the volume in the sewage inlet chamber 1, thereby achieving the problem of reducing the flow rate. Example 4

[0034] Reference Figure 1-2The difference of this embodiment is that: the sludge extraction part includes a pair of extraction units, a sludge pit 16 is provided on one side of the lower surface of the sewage inlet chamber 1 and the sewage buffer tank 2, the sewage inlet ends of the pair of extraction units are respectively arranged in the pair of sludge pits 16, and the sewage discharge ends of the pair of extraction units are respectively connected to the sewage backwater chamber 3; The extraction unit includes: a sludge pump 17 and a sludge pipe 18, wherein the sludge pump 17 is arranged in the sludge pit 16, and the sewage discharge end of the sludge pump 17 is connected with the sewage backflow chamber 3 through the sludge pipe 18, and the sludge pipe 18 is located above the sewage backflow chamber 3; The lower surface of the sludge pit 16 is inclined toward the sludge pump 17 .

[0035] In actual use: the sludge pump 17 will continue to extract the sediment that has settled downward in time to prevent the problem of excessive sedimentation causing the internal volume to decrease, and then mix and discharge it from the sewage backflow chamber 3. Immediate discharge can reduce the static sedimentation of sediment and increase the filtration operation cycle. Example 5

[0036] Reference Figure 1-2 The difference of this embodiment is that the check gate 6 is a gravity self-hanging check gate.

[0037] In actual use: the check gate 6 is a one-way gate, so that the sewage in the sewage withdrawal chamber 3 will not flow back into the sewage buffer tank 2. Example 6

[0038] Reference Figure 1-2 The difference of this embodiment is that: the sewage buffer tank 2 is provided with a maintenance manhole 19, and ladders 20 are fixed on the side surface of the waterproof retaining wall 5 and in the maintenance manhole 19.

[0039] In actual use: through the inspection manhole 19, and then through the ladder 20, the staff can enter the sewage buffer tank 2 to perform periodic dimensional work. Example 7

[0040] Reference Figure 1-2 The difference of this embodiment is that the check gate 6 is located higher than the water inlet end of the water withdrawal pipe 9, and the check gate 6 is located at the same height as the water diversion pipe 8 and the water withdrawal main pipe 11.

[0041] In actual use: the check gate 6 and the water withdrawal main pipe 11 are located higher than the water inlet end of the water withdrawal pipe 9, so that the water has turbulent characteristics when entering the sewage water withdrawal chamber 3, thereby improving the purpose of mixing the mud and sand slurry, and at the same time preventing the precipitated mud and sand from being affected by the water flow and accumulating excessively.

[0042] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the knowledge scope of ordinary technicians in the field, various changes can be made without departing from the purpose of the present invention, which are all within the protection scope of this technology.

Claims

1. A sewage source heat pump system water intake and lifting tank with coarse filtration and automatic decontamination, characterized in that: include: A lifting tank, wherein a sewage inlet chamber (1), a sewage buffer tank (2) and a sewage backwater chamber (3) are sequentially arranged in the lifting tank, wherein the lower surfaces of the sewage inlet chamber (1), the sewage buffer tank (2) and the sewage backwater chamber (3) are gradually reduced in height from left to right, and the lower surface of the sewage backwater chamber (3) is higher than the sewage inlet chamber (1) and the sewage buffer tank (2), the lower surface of the sewage inlet chamber (1) is higher than the lower surface of the sewage buffer tank (2), and the lower surface of the sewage inlet chamber (1) is lower than the lower surface of the sewage backwater chamber (3); A conveying channel (4), the conveying channel (4) being arranged above the lifting tank and being in communication with the sewage buffer tank (2) of the lifting tank; A waterproof retaining wall (5), the waterproof retaining wall (5) being arranged between the sewage inlet chamber (1) and the sewage buffer tank (2), the waterproof retaining wall (5) being provided with a filter port; A filter portion, the lower end of which is detachably connected to the lower surface of the filter port, and the upper end of which passes through the transmission channel (4) and extends upward; A check gate (6), the check gate (6) being arranged between the sewage buffer tank (2) and the sewage withdrawal chamber (3); A collecting tank (7), the collecting tank (7) being arranged below the upper end of the filtering portion; A sludge extraction part, the sludge extraction part having a pair of sewage inlet ends, the pair of sewage inlet ends being respectively located on the lower surface of the sewage inlet chamber (1) and the sewage buffer tank (2), and the sewage discharge end of the sludge extraction part being located in the sewage discharge chamber (3); A water diversion pipe (8), the water diversion pipe (8) being in communication with the sewage inlet chamber (1); A water return pipe (9), the water return pipe (9) being in communication with the sewage water return chamber (3), the water return pipe (9) being located at the lower end of the side wall of the sewage water return chamber (3), and the water inlet of the water return pipe (9) being lower than the water outlet of the water diversion pipe (8); A water intake main pipe (10), the water intake main pipe (10) being in communication with the sewage buffer tank (2); A water return main pipe (11), the water return main pipe (11) is connected to the sewage return chamber (3).

2. The water intake and lifting tank of a sewage source heat pump system with coarse filtration and automatic decontamination according to claim 1 is characterized in that: The filter unit comprises: A coarse grid conveyor belt (12), a transverse conveyor belt (13) and a driving motor (14); the filter port is located on one side of the sewage buffer tank (2) and is provided with a pair of grid-mounted water retaining walls (15); the lower end of the coarse grid conveyor belt (12) is detachably connected to the inner lower surface of the filter port; the coarse grid conveyor belt (12) extends upwardly in an inclined manner through a conveying channel (4); the pair of grid-mounted water retaining walls (15) are located on both sides of the coarse grid conveyor belt (12), and the two sides of the coarse grid conveyor belt (12) are respectively connected to the pair of grid-mounted water retaining walls (15); the transverse conveyor belt (13) is arranged above one side of the top end of the conveying channel (4); one end of the transverse conveyor belt (13) is located above the collecting tank (7), and the other end of the transverse conveyor belt (13) is butted against the top end of the coarse grid conveyor belt (12); the driving motor (14) is arranged above the conveying channel (4), and the driving motor (14) is respectively connected to the transverse conveyor belt (13) and the coarse grid conveyor belt (12) in driving connection.

3. The water intake and lifting tank of a sewage source heat pump system with coarse filtration and automatic decontamination according to claim 1 is characterized in that: The water outlet end of the water diversion pipe (8) is blocked by a waterproof retaining wall (5).

4. The water intake and lifting tank of a sewage source heat pump system with coarse filtration and automatic decontamination according to claim 1 is characterized in that: The sludge extraction section comprises a pair of extraction units, wherein a sludge pit (16) is provided on one side of the lower surface of the sewage inlet chamber (1) and the sewage buffer tank (2), the sewage inlet ends of the pair of extraction units are respectively arranged in the pair of sludge pits (16), and the sewage discharge ends of the pair of extraction units are respectively connected to the sewage drain chamber (3); The extraction unit comprises: a sludge pump (17) and a sludge pipe (18); the sludge pump (17) is arranged in the sludge pit (16); a sewage discharge end of the sludge pump (17) is connected to the sewage withdrawal chamber (3) through the sludge pipe (18); and the sludge pipe (18) is located above the sewage withdrawal chamber (3); The lower surface of the sludge pit (16) is inclined toward the sludge pump (17).

5. The water intake and lifting tank of a sewage source heat pump system with coarse filtration and automatic decontamination according to claim 1 is characterized in that: The non-return gate (6) is a gravity self-hanging non-return gate.

6. The water intake and lifting tank of a sewage source heat pump system with coarse filtration and automatic decontamination according to claim 1 is characterized in that: The sewage buffer tank (2) is provided with a maintenance manhole (19), and ladders (20) are fixed on the side surface of the waterproof retaining wall (5) and in the maintenance manhole (19).

7. The water intake and lifting tank of a sewage source heat pump system with coarse filtration and automatic decontamination according to claim 1 is characterized in that: The check gate (6) is located higher than the water inlet end of the water withdrawal pipe (9), and the check gate (6) is located at the same height as the water diversion pipe (8) and the water withdrawal main pipe (11).

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