A sewage source heat pump system water intake and lifting tank with coarse filtration and automatic decontamination

Abstract

The present invention relates to the field of sewage treatment, and specifically to a water intake and lifting tank of a sewage source heat pump system with coarse filtration and automatic decontamination, comprising: a lifting tank, wherein a sewage inlet chamber, a sewage buffer tank and a sewage backwater chamber are sequentially arranged in the lifting tank, wherein the lower surfaces of the sewage inlet chamber, the sewage buffer tank and the sewage backwater chamber gradually decrease in height from left to right, and the lower surface height of the sewage backwater chamber is higher than that of 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 backwater chamber; the present invention adopts a mechanical coarse screen, which effectively solves the problem of large-sized dirt clogging the pipeline and the need for manual real-time monitoring and regular cleaning, thereby realizing automatic cleaning of large-sized dirt and transporting the dirt to the ground through the mechanical coarse screen.

Description

Technical Field

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

[0002] Wastewater heat is widely recognized as a clean energy source with high recovery and utilization value. Urban sewage discharge is enormous, containing significant amounts of residual heat. Energy recovery is a key approach to directly feed this wastewater back into the environment or to export it through heating or cooling.

[0003] The utilization of waste heat from sewage is receiving more and more attention. All regions are making full use of waste heat resources from sewage and require that sewage source heat pump systems should be used preferentially near sewage main canals and sewage treatment plants where waste heat can be utilized.

[0004] Compared with soil source heat pump systems and air source heat pump systems, sewage source heat pump systems have distinct characteristics such as energy saving, environmental protection, and economy. With the acceleration of urbanization, they have 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 development is slow. Various impurities and suspended matter in sewage can cause problems such as pipe 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, and square buffer tank water extraction. These technologies 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 adopted 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 assist in the promotion and 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, realizes automatic filtration, and thus reduces maintenance costs and maintenance cycles.

[0010] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0011] A sewage source heat pump system water intake and lifting tank with coarse filtration and automatic decontamination, comprising:

[0012] A lifting tank is provided with a sewage inlet chamber, a sewage buffer tank and a sewage retreat chamber in sequence. The lower surfaces of the sewage inlet chamber, the sewage buffer tank and the sewage retreat chamber decrease in height from left to right. 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. The lower surface of the sewage inlet chamber is lower than the lower surface of the sewage retreat chamber.

[0013] A conveying channel is provided above the lifting pool and is connected to the sewage buffer tank of the lifting pool;

[0014] A waterproof retaining wall is provided between the sewage inlet chamber and the sewage buffer tank, and is provided with a filter port;

[0015] 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 extends upward through the transmission channel;

[0016] a check gate, which is arranged between the sewage buffer tank and the sewage backflow chamber;

[0017] A collecting tank is provided below the upper end of the filter portion;

[0018] 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;

[0019] a water diversion pipe, the water diversion pipe being connected to the sewage inlet chamber;

[0020] A water return pipe, which is connected to the sewage return chamber and is located at the lower end of the side wall of the sewage return chamber, and the water inlet of the water return pipe is lower than the water outlet of the water diversion pipe;

[0021] a water intake main pipe connected to a sewage buffer tank;

[0022] A water return main pipe is connected to the sewage return chamber.

[0023] Furthermore, the filter unit includes:

[0024] A coarse screen 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 screen-mounted water retaining walls. The lower end of the coarse screen conveyor belt is detachably connected to the lower surface of the filter port. The coarse screen conveyor belt extends obliquely upward through the transmission channel. A pair of screen-mounted water retaining walls are located on both sides of the coarse screen conveyor belt, and the two sides of the coarse screen conveyor belt are respectively connected to a pair of screen-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 collection tank, and the other end of the transverse conveyor belt is connected to the top of the coarse screen 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 screen conveyor belt.

[0025] Furthermore, the water outlet of the water diversion pipe is blocked by a waterproof retaining wall.

[0026] Furthermore, the sludge extraction part includes a pair of extraction units, and sludge pits are provided on one side of the lower surface of the sewage inlet chamber and the sewage buffer tank. 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 withdrawal chamber;

[0027] The extraction unit includes: a sludge pump and a sludge pipe, the sludge pump is arranged in the sludge pit, the sewage discharge end of the sludge pump is connected to the sewage withdrawal chamber through the sludge pipe, and the sludge pipe is located above the sewage withdrawal chamber;

[0028] The lower surface of the sludge pit is inclined toward the sludge pump side.

[0029] Furthermore, the check gate is a gravity-fed check gate.

[0030] 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.

[0031] 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.

[0032] The beneficial effect of the present invention is that: due to the use of the anti-collision retaining wall, 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 is effectively solved, thereby realizing 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.

[0033] The use of mechanical coarse screens effectively solves the problem of large-sized dirt clogging the pipes and the need for manual real-time monitoring and regular cleaning, thereby realizing automated cleaning of large-sized dirt and transporting the dirt to the ground through the mechanical coarse screens.

[0034] The use of a collection pool effectively solves the problem of dirt accumulation, thereby enabling centralized collection through the collection pool and reducing the cleaning cycle.

[0035] The use of a sludge trough effectively solves the problem of sludge sedimentation in the sewage inlet chamber and the sewage buffer tank, and then realizes the 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 withdrawal chamber by a sludge pump for discharge.

[0036] Due to the use of water intake mains and water return mains, it is possible to extract sewage with residual heat in the sewage buffer tank through the water intake mains, extract the residual 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 utilization of the residual heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be further described below with reference to the accompanying drawings and examples.

[0038] Figure 1 It is a structural schematic diagram of the present invention.

[0039] Figure 2 It is a top cross-sectional view of the present invention.

[0040] In the figure: 1-sewage inlet chamber; 2-sewage buffer tank; 3-sewage discharge chamber; 4-transmission channel; 5-waterproof retaining wall; 6-check gate; 7-collecting tank; 8-water inlet pipe; 9-discharge pipe; 10-water intake main pipe; 11-discharge main pipe; 12-coarse screen conveyor belt; 13-transverse conveyor belt; 14-drive motor; 15-screen installation retaining wall; 16-sludge pit; 17-sludge pump; 18-sludge pipe; 19-maintenance manhole; 20-ladder. DETAILED DESCRIPTION Example 1

[0041] Reference Figure 1-2 , is a structural diagram 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:

[0042] A lifting tank is provided with a sewage inlet chamber 1, a sewage buffer tank 2 and a sewage retreat chamber 3 in sequence. The lower surfaces of the sewage inlet chamber 1, the sewage buffer tank 2 and the sewage retreat chamber 3 decrease gradually from left to right. The lower surface of the sewage retreat 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. The lower surface of the sewage inlet chamber 1 is lower than the lower surface of the sewage retreat chamber 3.

[0043] A conveying channel 4 is provided above the lifting tank and is connected to the sewage buffer tank 2 of the lifting tank;

[0044] A waterproof retaining wall 5 is provided between the sewage inlet chamber 1 and the sewage buffer tank 2, and is provided with a filter port;

[0045] 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 extends upward through the transmission channel 4;

[0046] a check gate 6, which is arranged between the sewage buffer tank 2 and the sewage backflow chamber 3;

[0047] A collecting tank 7, which is arranged below the upper end of the filter portion;

[0048] The sludge extraction part has a pair of sewage inlet ends, which are 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 is located in the sewage discharge chamber 3;

[0049] a water diversion pipe 8, the water diversion pipe 8 being in communication with the sewage inlet chamber 1;

[0050] A water return pipe 9 is connected to the sewage return chamber 3 and is located at the lower end of the side wall of the sewage return chamber 3, with the water inlet of the water return pipe 9 being lower than the water outlet of the water diversion pipe 8;

[0051] A water intake main pipe 10, which is connected to the sewage buffer tank 2;

[0052] The water return main pipe 11 is connected to the sewage return chamber 3.

[0053] In actual use: sewage is discharged into the sewage inlet chamber 1 through the water pipe 8. At the same time, the sewage is blocked by the waterproof retaining wall 5 and the sewage fills the sewage inlet chamber 1. At the same time, part of the mud slurry settles downward. 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. 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 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 by 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 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. At the same time, it is flushed and mixed with the mud and sand 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 and sand slurry in the sewage withdrawal chamber 3 will not settle, and then be discharged through the withdrawal pipe 9.

[0054] The sludge extraction part can prevent the sludge slurry in the sewage inlet chamber 1 and the sewage buffer tank 2 from excessive precipitation. Example 2

[0055] Reference Figure 1-2 , the difference of this embodiment is that: the filter unit includes:

[0056] A coarse grate conveyor belt 12, a transverse conveyor belt 13 and a drive motor 14. The filter port is located on one side of the sewage buffer tank 2 and is provided with a pair of grate-mounted water retaining walls 15. The lower end of the coarse grate conveyor belt 12 is detachably connected to the lower surface of the filter port. The coarse grate conveyor belt 12 extends obliquely upward through the transmission channel 4. A pair of grate-mounted water retaining walls 15 are located on both sides of the coarse grate conveyor belt 12, and the two sides of the coarse grate conveyor belt 12 are respectively connected to a pair of grate-mounted water 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 grate conveyor belt 12. The drive motor 14 is arranged above the transmission channel 4, and the drive motor 14 is respectively driven and connected to the transverse conveyor belt 13 and the coarse grate conveyor belt 12.

[0057] 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.

[0058] 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 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 retaining wall 15. At the same time, the coarse grid conveyor belt 12 is connected by the grid installation 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 retaining wall 15. At the same time, the grid installation retaining wall 15 is a triangular structure, the right-angled side of which 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 that is impacted by water is improved. Example 3

[0059] Reference Figure 1-2 The difference of this embodiment is that the outlet end of the water diversion pipe 8 is blocked by the waterproof retaining wall 5 for water flow.

[0060] In actual use: the water flow of the water diversion pipe 8 is blocked by the waterproof retaining wall 5, and the volume in the sewage inlet chamber 1 is used for buffering, thereby achieving the problem of reducing the flow rate. Example 4

[0061] Reference Figure 1-2 The difference of this embodiment is that the sludge extraction part includes a pair of extraction units, and 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 withdrawal chamber 3;

[0062] The extraction unit includes: a sludge pump 17 and a sludge pipe 18. The sludge pump 17 is arranged in the sludge pit 16. The 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.

[0063] The lower surface of the sludge pit 16 is inclined toward the sludge pump 17 .

[0064] In actual use: the sludge pump 17 will continue to extract the sediment that has settled downwards in time to prevent the problem of internal volume reduction caused by excessive sedimentation, and then mix and discharge it from the sewage backflow chamber 3. Immediate discharge can reduce the static sedimentation of sediment and improve the filtration operation cycle. Example 5

[0065] Reference Figure 1-2 The difference of this embodiment is that the check gate 6 is a gravity self-hanging check gate.

[0066] In actual use: the check gate 6 is a one-way gate, so that the sewage in the sewage backflow chamber 3 will not flow back into the sewage buffer tank 2. Example 6

[0067] 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.

[0068] In actual use: workers can enter the sewage buffer tank 2 through the inspection manhole 19 and then through the ladder 20 to carry out periodic dimensional work. Example 7

[0069] 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.

[0070] In actual use: the check gate 6 and the water withdrawal main pipe 11 are positioned 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 settled mud and sand from being affected by the water flow and accumulating excessively.

[0071] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention, which are all within the scope of protection 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 provided 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) is arranged above the lifting pool and is in communication with the sewage buffer tank (2) of the lifting pool; 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 extends upward through the transmission channel (4); 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 filter 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) is connected to the sewage return chamber (3), and the water return pipe (9) is located at the lower end of the side wall of the sewage 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) being in communication with the sewage buffer tank (2); A 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 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 inner lower surface of the filter port; the coarse grid conveyor belt (12) extends obliquely upward through the transmission channel (4); the pair of 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 the pair of grid-mounted retaining walls (15); the transverse conveyor belt (13) is arranged above one side of the top end of the transmission channel (4); one end of the transverse conveyor belt (13) is located above the collection tank (7), and the other end of the transverse conveyor belt (13) is connected to the top end 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).

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 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 withdrawal 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); the 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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