Water outlet pressure electro-catalysis purification device for secondary water supply tank

Abstract

The invention discloses a secondary water supply water tank outlet water pressure electro-catalysis purification device which is connected between a water tank outlet pipe and a lifting pump front pipe in series. The device main body is alternately provided with purification areas and slow flow reaction areas along the water flow direction, and the slow flow reaction areas are positioned between adjacent purification areas; and at least three sets of piezoelectric potential energy purification devices consisting of piezoelectric potential energy nets and piezoelectric purification units are fixed in each purification area. The piezoelectric potential energy net is provided with a potential energy titanium net protruding in the water flow direction and a piezoelectric node ball net fixed to a node. The piezoelectric purification unit comprises lead-free piezoelectric ceramics which are embedded and fixed in the meshes and are in direct contact with the water flow, a pressure contact rod for transmitting the impact force of the water flow to the ceramics, and a dowel bar. Water flow impacts and excites the lead-free piezoelectric ceramic to generate piezoelectric catalytic reaction, hydroxyl free radicals and superoxide free radicals are generated, and disinfection by-products are degraded. The device utilizes water flow kinetic energy for self-energizing purification, is non-toxic and efficient, does not change pipeline pressure, and is suitable for a secondary water supply system of a high-rise building.

Description

Technical Field

[0001] This invention relates to a piezoelectric catalytic purification device for the outlet water of a secondary water supply tank, belonging to the field of municipal water supply pollution control. Background Technology

[0002] With the acceleration of urbanization and the increasing number of high-rise buildings, the water pressure of traditional municipal water supply networks can no longer meet the water demand of high-rise users. Secondary water supply, as an extension and supplement to the urban water supply system, has emerged. It uses water storage facilities (such as reservoirs and tanks) and pressurization equipment to store and pressurize tap water from the municipal network and then deliver it to high-rise users. It has gradually become an indispensable water supply link for urban high-rise residential buildings, commercial buildings and other buildings.

[0003] However, while secondary water supply systems address insufficient water pressure, they also create conditions for the generation and accumulation of disinfection byproducts. Municipal tap water undergoes disinfection with chlorine and chlorine dioxide before leaving the treatment plant, but faces multiple risks once it enters secondary water supply storage facilities. Improper cleaning and maintenance necessitates the addition of additional disinfectants or extended disinfection times. Organic matter, humic acid, bromide ions, and other precursors in the secondary water supply tank react with disinfectants to generate carcinogenic disinfection byproducts such as haloalkanes and haloacetic acids. Aging pipes and unsuitable materials lead to the leaching of corrosion products, further promoting byproduct formation. Furthermore, stagnant water areas, slow water flow, and long storage times in storage facilities cause an imbalance in the rate of disinfectant and byproduct formation, all exacerbating byproduct accumulation and potentially leading to excessive byproduct levels in end-user water, seriously endangering human health.

[0004] Currently, the treatment of disinfection byproducts in secondary water supply mainly involves adding chemicals to water tanks and installing filtration devices in the outlet pipes. While adding chemicals to water tanks can solve the problem of traditional disinfection byproducts, it can also lead to the generation of new pollution. Similarly, installing filtration devices in the outlet pipes of secondary water supply facilities also has many problems, such as difficulty in controlling the operation and maintenance of the packing material, the existence of hydraulic dead zones that become new sources of pollution, and insufficient pumping capacity due to changes in pipe diameter. There is an urgent need for a new type of purification facility for disinfection byproducts in the outlet water of secondary water supply facilities. Summary of the Invention

[0005] The present invention provides a piezoelectric catalytic purification device for the outlet water of a secondary water supply tank in order to solve the problems existing in the prior art.

[0006] The technical solutions adopted in this invention are as follows:

[0007] A piezoelectric catalytic purification device for the outlet water of a secondary water supply tank, wherein the device is connected in series between the outlet pipe of the secondary water supply tank and the front pipe of the booster pump, and the main body of the device is alternately arranged with purification zone and slow flow reaction zone along the water flow direction, and the slow flow reaction zone is located between two adjacent purification zones.

[0008] Each purification zone contains at least three sets of piezoelectric potential energy purification devices, each comprising a piezoelectric potential energy grid and a piezoelectric purification unit, wherein:

[0009] The piezoelectric potential energy grid consists of a potential energy titanium mesh protruding in the direction of water flow and a piezoelectric node ball mesh fixed at the nodes of the potential energy titanium mesh.

[0010] The piezoelectric purification unit includes a lead-free piezoelectric ceramic embedded in the mesh of the piezoelectric node ball and in direct contact with the water flow, a pressure contact rod fixed to the lead-free piezoelectric ceramic and transmitting the impact force of the water flow to the lead-free piezoelectric ceramic, and a force transmission rod connected to the pressure contact rod and transmitting mechanical energy to the lead-free piezoelectric ceramic.

[0011] Furthermore, the inner diameter of the main body of the device is equal to the inner diameter of the outlet pipe of the secondary water supply tank and the front pipe of the booster pump.

[0012] Furthermore, the main body of the device is composed of three straight segments connected in sequence to form a Z shape, with a semi-circular corner segment transitioning between adjacent straight segments. The purification zone is located in the straight segments, and the slow-flow reaction zone is located in the semi-circular corner segment.

[0013] Furthermore, a micropotential sensor is provided at the end of the piezoelectric potential energy purification device.

[0014] Furthermore, the piezoelectric purification unit also includes an anchoring end fixed to the end of the force transmission rod and a hydraulic diversion guide belt fixed by the anchoring end.

[0015] Furthermore, the hydraulic diversion guide belt is made of polyethylene.

[0016] Furthermore, both the pressure rod and the force transmission rod are made of titanium.

[0017] Furthermore, the inner wall of the main body of the device is fitted with an anti-corrosion pad made of oxidation-resistant and non-toxic polyethylene.

[0018] The present invention has the following beneficial effects:

[0019] (1) The piezoelectric catalytic purification device for secondary water supply tank outlet of the present invention overcomes the problem of low piezoelectric efficiency of traditional single piezoelectric ceramics and the problem of high efficiency but leaching toxicity of doped piezoelectric materials. It innovatively couples lead-free piezoelectric ceramics with piezoelectric potential energy grids in a node coupling manner, and distributes non-toxic but poor single piezoelectric ceramics in a mesh bridge. At the same time, under the action of hydraulic impact and mechanical stress, different piezoelectric ceramics enhance the catalytic effect through mesh radiation, effectively improve the hole effect, increase the yield of hydroxyl radicals, superoxide radicals, etc., and enhance the purification efficiency of disinfection by-products.

[0020] (2) The piezoelectric catalytic purification device for the outlet water of the secondary water supply tank of the present invention is innovatively designed with multiple straight-line purification zones and semi-circular corner slow-flow reaction zones arranged alternately. On the one hand, multi-stage purification realizes the all-round treatment of disinfection by-products in the water supply. On the other hand, through the design of multi-stage semi-circular corner sections, the hydraulic residence time can be increased without changing the pipeline pressure and without hydraulic dead zones, thereby enhancing the purification effect of pollutants.

[0021] (3) The piezoelectric catalytic purification device for the outlet of the secondary water supply tank of the present invention combines the characteristics of the secondary water supply facility to make full use of the mechanical energy of the pump that lifts the water flow when supplying water in the existing secondary water supply facility, and converts it into chemical energy to degrade pollutants such as disinfection by-products, so as to realize the function of purifying while supplying water. When the pump group stops running, the device stops working simultaneously, so as to realize the efficient use of pump group energy and extend the service life of the device.

[0022] (4) The piezoelectric catalytic purification device for the secondary water supply tank outlet of the present invention has multiple purification zones and slow-flow reaction zones, a piezoelectric potential energy network protruding in the direction of water supply flow, a node coupling method between lead-free piezoelectric ceramics and piezoelectric potential energy network, and a bridging coordination of the potential energy network, which provide multiple efficiency enhancements for the piezoelectric catalytic purification of the device.

[0023] (5) The piezoelectric catalytic purification device for the outlet of the secondary water supply tank of the present invention has a simple structure, is easy to assemble and install, has a multi-stage catalytic purification function, can purify while supplying water, has a long service life, has a micro-potential sensor to monitor the operating status in real time, is easy to maintain and replace, and is suitable for various water supply pipelines. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 This is a front view of the piezoelectric potential energy purification device of the present invention;

[0026] Figure 3 This is a side view of a node in the piezoelectric potential energy purification device of the present invention;

[0027] Figure 4 Schematic diagram of the node plane of the piezoelectric potential energy purification device

[0028] Explanation of symbols in the diagram:

[0029] 1—Main body of the purification device; 2—Anti-corrosion pad; 3—Receiving flange; 4—Piezoelectric potential energy purification device; 5—Micro-potential sensor; 6—Outlet pipe of the second water supply tank; 7—Pipe before the lift pump; 11—Primary purification zone; 12—Primary slow-flow reaction zone; 13—Secondary purification zone; 14—Secondary slow-flow reaction zone; 15—Tertiary purification zone; 31—Inlet flange; 32—Outlet flange; 41—Piezoelectric potential energy mesh; 42—Piezoelectric purification unit; 411—Potential energy titanium mesh; 412—Piezoelectric node ball mesh; 421—Lead-free piezoelectric ceramic; 422—Press rod; 423—Force transmission rod; 424—Anchoring end; 425—Hydraulic diversion guide belt. Detailed Implementation

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] like Figure 1 As shown, the piezoelectric catalytic purification device for the secondary water supply tank outlet of the present invention is connected to the outlet pipe 6 of the secondary water supply tank through the inlet flange 31, and is connected in series between the outlet pipe 6 of the secondary water supply tank and the front pipe 7 of the booster pump. The inner diameter of the main body 1 of the device is completely consistent with the inner diameter of the outlet pipe 6 of the secondary water supply tank and the front pipe 7 of the booster pump, ensuring that no pressure change or flow loss occurs when water flows through, and avoiding affecting the operating efficiency of the booster pump.

[0032] The main body of the device 1 is formed by three straight segments and two semi-circular corner segments connected in sequence to form a Z-shaped structure. Adjacent straight segments are smoothly transitioned through semi-circular corner segments. The straight segments serve as purification zones, and the semi-circular corner segments serve as slow-flow reaction zones. They are arranged sequentially along the water flow direction as a primary purification zone 11, a primary slow-flow reaction zone 12, a secondary purification zone 13, a secondary slow-flow reaction zone 14, and a tertiary purification zone 15. This alternating arrangement not only achieves multi-stage purification but also eliminates hydraulic dead zones through the structural design of the semi-circular corner segments. At the same time, it extends the residence time of water in the device, ensuring the full degradation of disinfection byproducts.

[0033] The inner wall of the main body 1 is fully covered with an anti-corrosion pad 2. The anti-corrosion pad 2 is made of oxidation-resistant and non-toxic polyethylene material. It is dense and completely adheres to the inner wall of the main body 1. Its thickness is half the thickness of the wall of the main body 1. It can reduce the ionization loss generated when the water flows into contact with the inner wall of the main body 1, protect the main body 1 from metal electrolytic corrosion, and prevent the material itself from polluting the water body, thus ensuring water supply safety.

[0034] At least three sets of piezoelectric potential energy purification devices 4 are fixedly installed in the primary purification zone 11, the secondary purification zone 13, and the tertiary purification zone. Each piezoelectric potential energy purification device 4 is evenly distributed in the purification zone to ensure that the water flow can fully contact the catalytic purification structure.

[0035] like Figure 2As shown, the piezoelectric potential energy purification device 4 includes a piezoelectric potential energy grid 41 and a piezoelectric purification unit 42. The piezoelectric potential energy grid 41 is composed of a potential energy titanium grid 411 and a piezoelectric node ball grid 412. The potential energy titanium grid 411 has an arc-shaped structure that bulges in the direction of water flow. This bulging design greatly increases the contact area with the water flow. The piezoelectric node ball grid 412 is uniformly fixed at each node position of the potential energy titanium grid 411 to form a mesh-distributed catalytic action point, allowing the water flow to contact more catalytic units when passing through.

[0036] like Figure 3 , Figure 4 As shown, the piezoelectric purification unit 42 corresponds one-to-one with the piezoelectric node ball mesh 412 and is embedded in the mesh of the piezoelectric node ball mesh 412. Its core component is a lead-free piezoelectric ceramic 421. The lead-free piezoelectric ceramic 421 is spherical and is a modified piezoelectric ceramic material with no leaching toxicity. Its surface is in direct contact with the water flow to ensure that the water impact energy acts directly on it.

[0037] The pressure rod 422 is fixed to one side of the lead-free piezoelectric ceramic 421. It is made of titanium, which is sturdy and corrosion-resistant. Its length is two-thirds of the diameter of the lead-free piezoelectric ceramic 421, and it can efficiently transmit external force to the lead-free piezoelectric ceramic 421. The force transmission rod 423 is also made of titanium metal, and its overall length is twice that of the pressure contact rod 422. One end of it passes through the piezoelectric node ball mesh 412 and is perpendicularly connected to the pressure contact rod 422. The other end extends along the water flow direction and is fixed to the anchor end 424. A hydraulic diversion guide belt 425 is fixedly installed on the anchor end 424. The hydraulic diversion guide belt 425 is made of oxidation-resistant and tensile-resistant polyethylene material and is radially spread out. It can collect and amplify the mechanical kinetic energy of the water flow and transfer the kinetic energy to the lead-free piezoelectric ceramic 421 through the force transmission rod 423 and the pressure contact rod 422 to enhance the piezoelectric catalytic effect. It can also disperse the water flow and allow the water to flow evenly through the subsequent piezoelectric potential energy purification device 4 to achieve all-round purification without dead angles.

[0038] Each piezoelectric potential energy purification device 4 is equipped with a micro-potential sensor 5 at its end, such as... Figure 1 As shown, the sensing probe of the micro-potential sensor 5 is inserted into the device and is set adjacent to the piezoelectric purification unit 42. It can monitor the piezoelectric reaction state of the lead-free piezoelectric ceramic 421 in real time. The external indicator light will display the operating status according to the sensed potential signal. When the piezoelectric purification unit 42 is working normally, the indicator light will remain stably lit. If a fault occurs that causes the piezoelectric effect to weaken or disappear, the indicator light will flash or turn off accordingly, making it convenient for staff to find and replace faulty parts in time.

[0039] The working process of this device is as follows: When the secondary water supply booster pump is started, the tap water in the water tank flows into the device through the outlet pipe 6 of the secondary water supply tank, and enters the primary purification zone 11 through the inlet flange 31. The water flow first contacts the hydraulic diversion guide belt 425 in the primary purification zone and is dispersed into multiple water flows. At the same time, the hydraulic diversion guide belt 425 collects the mechanical kinetic energy of the water flow and transmits it to the force transmission rod 423 through the anchor end 424. The force transmission rod 423 converts the kinetic energy into mechanical force and transmits it to the pressure contact rod 422, which then acts on the lead-free piezoelectric ceramic 421. At the same time, the water flow directly impacts the surface of the lead-free piezoelectric ceramic 421, forming a double mechanical force, which excites the lead-free piezoelectric ceramic 421 to generate electron-hole pairs. The electron-hole pairs react with water molecules to generate hydroxyl radicals and superoxide radicals. These strong oxidizing radicals can rapidly degrade disinfection byproducts such as haloalkanes and haloacetic acids in the water flow.

[0040] After initial purification by multiple piezoelectric potential energy purification devices 4 in the primary purification zone 11, the water enters the primary slow-flow reaction zone 12. The semi-circular structure of this zone creates a swirling flow, extending the water path and residence time, allowing incompletely degraded disinfection byproducts to fully react with free radicals, thus enhancing the purification effect. The water then enters the secondary purification zone 13, repeating the catalytic degradation process of the primary purification zone 11 to further remove residual pollutants. It then flows through the secondary slow-flow reaction zone 14 for further deep reaction, finally entering the tertiary purification zone 15 for final purification. The purified water flows through the outlet flange 32 into the pre-pump pipe 7, and is then pumped to the homes of high-rise users. When the pump stops operating, the water flow ceases, the hydraulic impact disappears, and the piezoelectric catalytic effect stops simultaneously, achieving efficient energy utilization while reducing ineffective losses and extending the service life of the equipment.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A secondary water supply tank outlet water pressure electro-catalytic purification device, which is connected in series between a secondary water supply tank outlet pipe (6) and a pre-lift pump pipe (7), characterized in that: purification zones and slow-flow reaction zones are alternately arranged along the water flow direction in the device main body, and the slow-flow reaction zones are located between adjacent two purification zones; at least three sets of piezoelectric potential energy purification devices (4) are fixed in each purification zone, the piezoelectric potential energy purification device (4) comprises a piezoelectric potential energy net (41) and a piezoelectric purification unit (42), wherein: the piezoelectric potential energy net (41) is provided with a potential energy titanium net (411) protruding in the water flow direction and a piezoelectric node ball net (412) fixed at the nodes of the potential energy titanium net; the piezoelectric purification unit (42) comprises a lead-free piezoelectric ceramic (421) embedded in the mesh of the piezoelectric node ball net (412) and directly contacted with the water flow, a pressure touch rod (422) fixed to the lead-free piezoelectric ceramic (421) and transmitting the water flow impact force to the lead-free piezoelectric ceramic (421), and a force transmission rod (423) connected with the pressure touch rod (422) and transmitting mechanical energy to the lead-free piezoelectric ceramic (421).

2. The secondary water supply tank outlet water pressure electrocatalytic purification device according to claim 1, characterized in that: The inner diameter of the device main body is equal to the inner diameters of the secondary water supply tank outlet pipe (6) and the pre-lift pump pipe (7).

3. The secondary water supply tank outlet water pressure electrocatalytic purification device according to claim 1, characterized in that: The device main body (1) is connected in sequence by three straight line segments into a Z shape, with a semicircular corner segment transition between adjacent straight line segments, the purification zones are arranged in the straight line segments, and the slow-flow reaction zones are arranged in the semicircular corner segments.

4. The secondary water supply tank outlet water pressure electrocatalytic purification device according to claim 1, characterized in that: The end of the piezoelectric potential energy purification device (4) is provided with a micro-potential sensor (5).

5. The secondary water supply tank outlet water pressure electrocatalytic purification device according to claim 1, characterized in that: The piezoelectric purification unit (42) further comprises an anchoring end head (424) fixed at the end of the force transmission rod (423) and a hydraulic shunt guide belt (425) fixed by the anchoring end head (424).

6. The secondary water supply tank outlet water pressure electrocatalytic purification device according to claim 5, characterized in that: The hydraulic shunt guide belt (425) is made of polyethylene material.

7. The secondary water supply tank outlet water pressure electrocatalytic purification device according to claim 1, characterized in that: The pressure touch rod (422) and the force transmission rod (423) are both made of titanium metal material.

8. The secondary water supply tank outlet water pressure electrocatalytic purification device according to claim 1, characterized in that: The inner wall of the device main body is attached to a corrosion-resistant pad layer (2) made of non-toxic polyethylene resistant to oxidation.

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