Urban internal and external pressure backwashing water supply equipment

Abstract

The utility model relates to water supply equipment for urban internal and external pressure backwashing. The water supply equipment comprises a water supply pipe, a front-end filter, a pressurizing water supply tank and a pressure water supply tank, a water inlet and a water outlet of the pressure water supply tank are respectively provided with an internal pressure ultrafiltration membrane and an external pressure ultrafiltration membrane; the pressurizing water supply tank is connected with the internal pressure ultrafiltration membrane through a water inlet pipeline; an external pressure three-way electromagnetic valve, a stop valve and an internal pressure three-way electromagnetic valve are sequentially arranged on the water inlet pipeline according to the water flow direction, and the internal pressure three-way electromagnetic valve is connected to the water supply side of the water supply pipe through an internal pressure backwashing pipe; a drainage pipeline is arranged on the water outlet side of the external pressure ultrafiltration membrane, the drainage pipeline is connected to the external pressure three-way electromagnetic valve through an external pressure backwashing pipe, and the external pressure ultrafiltration membrane is backwashed by utilizing pressurized water provided by the pressurizing tank. The internal and external pressure backwash water supply equipment is reasonable in design and comprehensive in function, not only ensures the safety and stability of supplied water quality, but also facilitates the maintenance and cleaning of the equipment, and has remarkable beneficial effects.

Description

Technical Field

[0001] The utility model relates to the technical field of urban water supply, in particular to a water supply device for urban internal and external pressure backwashing. Background Art

[0002] With the rapid development of society and the continuous growth of population, the process of urbanization is accelerating, and it is accompanied by huge challenges to urban infrastructure, especially water supply systems. As the basic guarantee of urban residents' lives, the safety and stability of urban water supply systems are directly related to the health and quality of life of every citizen. However, with the intensification of environmental pollution, the problem of water source safety has become more prominent, and water quality assurance has become an increasingly serious problem.

[0003] Although the traditional water supply system can meet the basic water needs of citizens to a certain extent, it is unable to ensure water quality. Especially when the water source is polluted or the water quality is unstable, the traditional treatment process and pretreatment methods often cannot completely remove the harmful substances and bacteria in the water. This not only affects the water experience of citizens, but also poses a potential threat to their health.

[0004] Therefore, it has become an urgent problem to carry out deep pressure ultrafiltration treatment on urban water supply systems to ensure that the water quality meets the standard for direct drinking. The application of deep pressure ultrafiltration treatment technology can not only effectively remove harmful substances and pathogens in water, but also improve the stability and safety of water quality. However, it is more troublesome to clean the internal and external ultrafiltration membranes during use. The existing technology generally disassembles the component and puts it on special equipment for cleaning, which is difficult to clean and maintain. Based on this, it is necessary to study a water supply equipment for urban internal and external pressure backwashing. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a water supply equipment for urban internal and external pressure backwashing, which effectively solves the problem that the existing ultrafiltration water supply structure has troublesome cleaning and maintenance.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a water supply device for urban internal and external pressure backwashing, comprising a water supply pipe, a front-end filter, a booster water supply tank and a pressure water supply tank; the water supply pipe is connected to an external water source, and is sequentially connected to the front-end filter and the booster water supply tank; the water inlet and the drain outlet of the pressure water supply tank are respectively provided with an internal pressure ultrafiltration membrane and an external pressure ultrafiltration membrane; the booster water supply tank is connected to the internal pressure ultrafiltration membrane through a water inlet pipe;

[0007] An external pressure three-way solenoid valve, a stop valve assembly and an internal pressure three-way solenoid valve are sequentially arranged on the water inlet pipe according to the water flow direction. The internal pressure three-way solenoid valve is connected to the water supply side of the water supply pipe through an internal pressure backwashing pipe, and the internal pressure of the pressure water supply tank is used to backwash the internal pressure ultrafiltration membrane, and the backwashing is introduced into the front-end filter; a drainage pipe is arranged on the water outlet side of the external pressure ultrafiltration membrane, and the drainage pipe is connected to the external pressure three-way solenoid valve through the external pressure backwashing pipe, and the external pressure ultrafiltration membrane is backwashed using pressurized water provided by the boosting tank.

[0008] Furthermore, the stop valve assembly includes a stop valve and a check valve.

[0009] Furthermore, the front-end filter is a Y-type filter, and the water outlet side of the Y-type filter is connected to the pressure water supply tank through a check valve.

[0010] Furthermore, a cleaning assembly is provided at the lower portion of the pressure water supply tank, and the cleaning assembly includes an inner support frame, a rotating shaft, a mounting sleeve, a cleaning brush, a valve body, a rotating sealing body and a drain pipe; the inner support frame is fixed to the inner side of the pressure water supply tank, and a rotating shaft is rotatably provided at the middle portion thereof, a mounting sleeve is fixed to the outer side of the rotating shaft, and one or more cleaning brushes are fixed to the outer side of the mounting sleeve, and the cleaning brush is in contact with the inner wall of the pressure water supply tank; a drain port is provided at the bottom center of the pressure water supply tank, a valve body is installed at the drain port, a drain pipe is provided on the inner side of the valve body, a rotating sealing body is fixed at the lower portion, and the lower portion of the rotating shaft is rotatably provided in the rotating sealing body, and a driving end extends outward, and the driving end is equipped with a rotating handle.

[0011] Furthermore, the upper portion of the discharge port is in a bell-mouth structure.

[0012] The beneficial effect of the above technical solution is: the utility model structurally utilizes a front-end filter to perform preliminary filtration on the water source, so that the residual impurities therein are filtered and intercepted and discharged, and then the water source enters the pressurized water supply tank through a check valve, where a high-pressure supply point is added to provide conveying power, so that the water source passes through the internal pressure ultrafiltration membrane and enters the pressure water supply tank, and the internal pressure provided by the pressure water supply pipe is used to provide power for the filtration of the external pressure ultrafiltration membrane.

[0013] In terms of backwashing, the utility model utilizes the directional power provided by the pressure tank for the internal pressure, cuts off the pressure supply of the booster water supply tank, and switches to the internal pressure backwashing bypass, so that the backwashing water enters the front-end filter for processing. The structure realizes internal circulation without the need for disassembly and cleaning, which greatly improves the cleaning efficiency.

[0014] For the external pressure backwashing structure, the power provided by the booster water supply tank is used to provide water flow to the external pressure ultrafiltration membrane from the outside, and backwashing is achieved, and the flushing water is sent into the pressure tank; at the same time, a cleaning component is arranged at the bottom of the pressure water supply pipe. Through this structure, the utility model can realize the bottom cleaning of the pressure water supply tank and improve cleaning efficiency.

[0015] The utility model has a novel structure, adopts ultrafiltration technology to filter and purify water sources, and combines internal and external pressure backwashing water supply equipment with reasonable design and comprehensive functions, which not only ensures the safety and stability of water supply quality, but also facilitates the maintenance and cleaning of the equipment, and has significant beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the implementation structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the implementation structure of the pressure water supply tank;

[0018] Figure 3 It is a schematic diagram of the implementation structure of the inner support frame.

[0019] Figure markings: 1-front end filter, 2-check valve, 3-boosting water supply tank, 4-external pressure three-way solenoid valve, 5-stop valve, 6-check valve, 7-internal pressure three-way solenoid valve, 8-internal pressure ultrafiltration membrane, 9-pressure water supply tank, 10-external pressure ultrafiltration membrane, 11-inner support frame, 12-rotating shaft, 13-installing sleeve, 14-cleaning brush, 15-valve body, 16-drain pipe, 17-rotating sealing body, 18-rotating handle. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0021] Example 1. This example aims to provide a city internal and external pressure backwashing water supply equipment, which is mainly used for water supply equipment. The existing ultrafiltration filtration technology is troublesome to clean the internal and external ultrafiltration membranes during use. Generally, the components are disassembled and placed on special equipment for cleaning, which has the problem of difficult cleaning and maintenance. This example provides a city internal and external pressure backwashing water supply equipment.

[0022] like Figure 1 As shown in the figure, a water supply equipment for urban internal and external pressure backwashing includes a water supply pipe, a front-end filter 1, a booster water supply tank 3 and a pressure water supply tank 9; the water supply pipe is connected to an external water source, and is sequentially connected to the front-end filter 1 and the booster water supply tank 3, the front-end filter is a Y-type filter, and the water outlet side of the Y-type filter is connected to the pressure water supply tank 9 through a check valve; it has a simple structure and good filtering effect, and the water outlet side is connected to the pressure water supply tank 9 through a check valve 2, which effectively prevents the backflow of water and further improves the water supply quality.

[0023] When implementing Figure 1In the figure, the water supply pipe is provided with a front filter 1, a check valve 2, a booster water supply tank 3, an external pressure three-way solenoid valve 4, a stop valve 5, a check valve 6, an internal pressure three-way solenoid valve 7, a pressure water supply tank 9 and an external water-using device in sequence according to the water flow direction. An internal pressure ultrafiltration membrane 8 and an external pressure ultrafiltration membrane 10 are respectively provided at the water inlet and the outlet of the pressure water supply tank 9. During implementation, the internal pressure ultrafiltration membrane 8 and the external pressure ultrafiltration membrane 10 are provided on both sides of the lower part of the pressure water supply tank 9, and a booster device of a pressure gauge is provided on the upper part of the pressure water supply tank 9.

[0024] For the internal pressure backwashing structure, in this embodiment, the booster water supply tank 3 is connected to the internal pressure ultrafiltration membrane 8 through the water inlet pipe, and the external pressure three-way solenoid valve 7, the stop valve assembly and the internal pressure three-way solenoid valve 7 are arranged in sequence on the water inlet pipe according to the water flow direction. The stop valve assembly includes a stop valve 5 and a check valve 6 arranged in sequence; the internal pressure three-way solenoid valve 7 is connected to the water supply side of the water supply pipe through the internal pressure backwashing pipe, and the internal pressure of the pressure water supply tank 9 is used to backwash the internal pressure ultrafiltration membrane 8, and the backwashing is introduced into the front-end filter 1.

[0025] For the external pressure backwash structure, in this embodiment, a drainage pipe is provided on the outlet side of the external pressure ultrafiltration membrane 10, which is connected to the external pressure three-way solenoid valve via the external pressure backwash pipe, and the pressurized water provided by the booster tank is used to backwash the external pressure ultrafiltration membrane 10.

[0026] This embodiment adopts the design of internal and external pressure backwashing, which not only ensures the water quality safety during the water supply process, but also can effectively remove impurities and blockages on the ultrafiltration membrane, thereby extending the service life of the ultrafiltration membrane. Specifically, the internal pressure of the pressure water supply tank 9 is used to backwash the internal pressure ultrafiltration membrane 8, and the backwashing is introduced into the front filter 1, which helps to remove impurities on the front filter 1 and the internal pressure ultrafiltration membrane 8. At the same time, the external pressure ultrafiltration membrane 10 is backwashed with pressurized water provided by the boosting tank, which also ensures the cleanliness and smoothness of the external pressure ultrafiltration membrane 10.

[0027] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that a cleaning assembly is provided at the lower portion of the pressure water supply tank 9 in this embodiment, and the cleaning assembly is used to clean the lower portion of the pressure water supply pipe.

[0028] In this embodiment, Figure 2-3 As shown in , the cleaning assembly includes an inner support frame 11, a rotating shaft 12, a mounting sleeve 13, a cleaning brush 14, a valve body 15, a rotating sealing body 17 and a drain pipe 16; Figure 3 The inner support frame 11 shown in the figure is fixed to the inner side of the pressure water supply tank 9, and a rotating shaft 12 is rotatably arranged in the middle thereof so that the rotating shaft 12 can rotate on the inner support frame 11 to form an installation basis.

[0029] A mounting sleeve 13 is fixed to the outside of the rotating shaft 12, and one or more cleaning brushes 14 are fixed to the outside of the mounting sleeve 13. In a preferred embodiment, three cleaning brushes 14 can be configured. The cleaning brushes 14 are in contact with the inner wall of the pressure water supply tank 9, and the cleaning brushes rotate along with the rotating shaft.

[0030] A discharge port is provided at the bottom center of the pressure water supply tank 9, the upper part of the discharge port is a trumpet-shaped structure, a valve body 14 is installed at the lower part of the discharge port, a downwardly inclined discharge pipe 16 is provided at the inner side of the valve body 14, a rotating sealing body 17 is fixed at the lower part, the lower part of the rotating shaft 12 is rotatably arranged in the rotating sealing body 17, a sealing bearing is arranged in the rotating sealing body, sealing blocks are configured at the upper and lower parts, and are adapted to be nested and installed inside the valve body, the rotating shaft 12 has a driving end extending outward, and the driving end is equipped with a rotating handle 18.

[0031] The cleaning assembly arranged at the bottom of the pressure water supply tank 9 can effectively clean the impurities and dirt on the tank wall by the cleaning brush fitting against the inner wall of the pressure water supply tank 9, thus ensuring the cleanliness of the water supply tank. At the same time, by driving the rotating shaft to rotate through the rotating handle, the cleaning brush can clean the inner wall of the water supply tank in all directions, and the cleaning effect is good. The upper part of the discharge port is in a bell-mouth structure, which is conducive to the discharge of impurities and prevents impurities from accumulating at the discharge port.

[0032] The implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. The basic concept of the utility model is to use ultrafiltration technology to filter and purify water sources, and combine internal and external pressure backwashing water supply equipment to achieve water source purification and reduce maintenance difficulty. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A water supply equipment for urban internal and external pressure backwashing, characterized in that: It includes a water supply pipe, a front-end filter, a booster water supply tank and a pressure water supply tank; the water supply pipe is connected to an external water source, and is sequentially connected to the front-end filter and the booster water supply tank; the water inlet and the outlet of the pressure water supply tank are respectively provided with an internal pressure ultrafiltration membrane and an external pressure ultrafiltration membrane; the booster water supply tank is connected to the internal pressure ultrafiltration membrane through a water inlet pipe; An external pressure three-way solenoid valve, a stop valve assembly and an internal pressure three-way solenoid valve are sequentially arranged on the water inlet pipe according to the water flow direction. The internal pressure three-way solenoid valve is connected to the water supply side of the water supply pipe through an internal pressure backwashing pipe, and the internal pressure of the pressure water supply tank is used to backwash the internal pressure ultrafiltration membrane, and the backwashing is introduced into the front-end filter; a drainage pipe is arranged on the water outlet side of the external pressure ultrafiltration membrane, and the drainage pipe is connected to the external pressure three-way solenoid valve through the external pressure backwashing pipe, and the external pressure ultrafiltration membrane is backwashed using pressurized water provided by the boosting tank.

2. The water supply equipment for urban internal and external pressure backwashing according to claim 1 is characterized in that: The stop valve assembly comprises a stop valve and a check valve.

3. The water supply equipment for urban internal and external pressure backwashing according to claim 1 is characterized in that: The front-end filter is a Y-type filter, and the water outlet side of the Y-type filter is connected to the pressure water supply tank through a check valve.

4. The water supply equipment for urban internal and external pressure backwashing according to claim 1 is characterized in that: A cleaning assembly is provided at the lower part of the pressure water supply tank, and the cleaning assembly includes an inner support frame, a rotating shaft, a mounting sleeve, a cleaning brush, a valve body, a rotating sealing body and a drain pipe; the inner support frame is fixed to the inner side of the pressure water supply tank, and a rotating shaft is rotatably provided at the middle part thereof, a mounting sleeve is fixed to the outer side of the rotating shaft, and one or more cleaning brushes are fixed to the outer side of the mounting sleeve, and the cleaning brush is in contact with the inner wall of the pressure water supply tank; a drain port is provided at the bottom center of the pressure water supply tank, a valve body is installed at the drain port, a drain pipe is provided on the inner side of the valve body, and a rotating sealing body is fixed at the lower part, and the lower part of the rotating shaft is rotatably provided in the rotating sealing body, and a driving end extends outward, and the driving end is equipped with a rotating handle.

5. The water supply equipment for urban internal and external pressure backwashing according to claim 4 is characterized in that: The upper part of the discharge port is in a bell-mouth structure.

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