Conveniently replaceable filter core wastewater ratio adjustable pure water machine

Abstract

The utility model relates to water purification equipment technical field discloses a pure water machine of convenient replacement filter core and adjustable wastewater ratio, through multistage filter core intercommunication realizes grading filtration, wherein reverse osmosis membrane filter core separates pure water and wastewater, adopts detachable connecting structure fast assembly and disassembly between adjacent filter core, sets up four-way valve, pure water valve, wastewater regulating valve and flush valve in transmission pipe network and controls in coordination: when closing pure water valve, linkage four-way valve is cut off simultaneously in double waterway, rotates wastewater regulating valve and dynamically adjusts wastewater discharge proportion, opens flush valve and reversely clean reverse osmosis membrane. Circulation pipeline realizes wastewater secondary utilization. Solve the traditional equipment core complex, wastewater ratio rigidification and shutdown leakage problem, and have the operation convenience and resource adaptive optimization ability.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and more specifically, to a pure water machine with an adjustable wastewater ratio and easy filter replacement. Background Technology

[0002] As a key device for ensuring drinking water safety, the core value of a water purifier lies in its efficient removal of impurities, heavy metals, and harmful substances from water through a multi-stage filtration system. This invention, through innovative structural design, simultaneously addresses two major technical challenges: ease of filter replacement and dynamic adjustment of the wastewater ratio. On the one hand, it significantly reduces the user's maintenance threshold and operation time; on the other hand, it enables intelligent adjustment of the pure water output rate based on the raw water quality. This ensures the long-term operation of the reverse osmosis membrane while reducing water waste, comprehensively improving the equipment's practicality and environmental friendliness.

[0003] Currently, most water purifiers on the market suffer from two main drawbacks: First, filter cartridges are often secured with threads or complex clips, requiring specialized tools for replacement and easily damaging the interfaces, resulting in high maintenance costs. Second, wastewater discharge ratios are mostly fixed, failing to adapt to fluctuations in water quality across different regions—insufficient wastewater discharge under high-impurity water sources accelerates reverse osmosis membrane clogging, while excessive discharge under low-impurity water sources wastes resources. Furthermore, existing valve systems lack a coordinated control mechanism, failing to simultaneously cut off the pure water and wastewater pathways when the machine stops, leading to residual water leakage or secondary contamination of the membrane elements.

[0004] Therefore, a pure water machine with an adjustable wastewater ratio and easy filter replacement is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a pure water machine with easy filter replacement and adjustable wastewater ratio, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pure water machine with easy filter replacement and adjustable wastewater ratio, comprising multi-stage filter elements and a transmission pipeline network. The multi-stage filter elements are connected in sequence and include at least a PP cotton filter element, a granular carbon filter element, and a reverse osmosis membrane filter element. The outlet end of the reverse osmosis membrane filter element is provided with a clean water outlet and a wastewater outlet. Adjacent filter elements are fixed by a detachable connection structure. The transmission pipeline network includes connecting pipes and a multi-stage control mechanism.

[0007] The multi-level control mechanism includes:

[0008] Start / stop control valve: Located between clean water pipe and sewage pipe, it controls the flow of water.

[0009] Pure water valve: Located at the end of the purified water pipeline;

[0010] Wastewater regulating valve: dynamically regulates the wastewater discharge volume, making the wastewater discharge volume inversely proportional to the pure water production volume;

[0011] Flushing valve: Connected to the sewage pipe, used for flushing the reverse osmosis membrane;

[0012] The sewage pipeline is equipped with a circulation pipe.

[0013] Preferably, the detachable connection structure is an elastic clamping component, including two arc-shaped clamping heads, and each filter element has an inlet / outlet connection port at both ends, so that the filter element can be quickly inserted and removed through the elastic deformation of the clamping component.

[0014] Preferably, the start / stop control valve is a four-way valve with four internal pipe interfaces. When the pure water valve is closed, the four-way valve is activated to simultaneously cut off the output of pure water and wastewater.

[0015] Preferably, the wastewater regulating valve adjusts its opening by rotating clockwise or counterclockwise. When the purity of the raw water is low, the opening is increased to protect the reverse osmosis membrane filter element.

[0016] Preferably, it also includes a DI resin filter element, the inlet of which can be selectively connected to the outlet of the water purification pipe via a transmission pipeline network.

[0017] Preferably, the flushing valve is a ball valve, which is opened as needed according to the cleanliness of the water source to introduce high-pressure water flow into the sewage pipe to flush the reverse osmosis membrane filter element.

[0018] Preferably, the inlet end of the PP cotton filter element is connected to an external water source, and the outlet end is connected to the reverse osmosis membrane filter element through the granular carbon filter element in sequence, forming a graded filtration path.

[0019] The technical effects and advantages of this utility model are as follows:

[0020] Compared with existing technologies, this utility model proposes three technological breakthroughs: First, it uses elastic clamping components to connect the filter element, and the elastic deformation of two arc-shaped clamping heads enables manual insertion and removal, facilitating filter element replacement and improving assembly efficiency; second, it adds a rotatable wastewater regulating valve, which controls the wastewater flow in real time by rotating clockwise / counterclockwise, increasing the drainage volume to protect the reverse osmosis membrane under high-impurity water sources and reducing drainage to improve water production rate under low-impurity water sources; finally, through the linkage design of the four-way valve and the pure water valve, the water circuit of the whole machine is automatically cut off when the pure water valve is closed, completely eliminating the risk of leakage during shutdown, and the membrane surface is periodically flushed with high pressure using a ball valve, extending the life of the core filter element. Attached Figure Description

[0021] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model.

[0022] The attached diagram is labeled as follows: 11. PP cotton filter element; 12. Granular carbon filter element; 13. Reverse osmosis membrane filter element; 131. Clean water outlet; 132. Sewage outlet; 31. Four-way valve; 32. Connecting pipe; 1311. Clean water pipe; 1321. Sewage pipe; 1322. Circulation pipe; 33. Wastewater regulating valve; 34. Ball valve; 35. Pure water valve; 2. Elastic clamping element; 15. Inlet / outlet connection port. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] As attached Figure 1 The purified water machine shown is easy to replace filter cartridges and has an adjustable wastewater ratio. It includes multiple filter cartridges and a transmission pipeline network. The multiple filter cartridges are connected in sequence and include at least a PP cotton filter cartridge 11, a granular carbon filter cartridge 12 and a reverse osmosis membrane filter cartridge 13. The water outlet of the reverse osmosis membrane filter cartridge 13 is provided with a purified water outlet 131 and a wastewater outlet 132. Adjacent filter cartridges are fixed by a detachable connection structure. The transmission pipeline network includes a connecting pipe 32 and a multi-stage control mechanism.

[0026] Multi-level control mechanisms include:

[0027] Start-stop control valve: Located between clean water pipe 1311 and sewage pipe 1321, it controls the flow of water.

[0028] Pure water valve 35: located at the end of the pure water pipe 1311;

[0029] Wastewater regulating valve 33: dynamically regulates the wastewater discharge volume, so that the wastewater discharge volume is inversely proportional to the pure water production volume;

[0030] Flushing valve: Connected to sewage pipe 1321, used for flushing the reverse osmosis membrane;

[0031] A circulation pipe 1322 is installed on the sewage pipe 1321.

[0032] When the water purifier is running, external water is injected from the inlet of the PP cotton filter element 11, flowing sequentially through the granular carbon filter element 12 to the reverse osmosis membrane filter element 13. The reverse osmosis membrane separates the water flow into pure water and wastewater: pure water enters the pure water pipe 1311 through the pure water outlet 131, and wastewater flows into the sewage pipe 1321 through the sewage outlet 132. Adjacent filter elements are quickly assembled through a detachable connection structure. The start / stop control valve, such as a four-way valve, installed in the transmission network simultaneously monitors the pure water and wastewater pathways; the pure water valve 35, located at the end of the pure water pipe, controls the water output; the wastewater regulating valve 33 dynamically adjusts the opening of the sewage pipe through valve core displacement—increasing the opening increases the wastewater discharge and decreases the pure water yield, and vice versa; the flushing valve, such as a ball valve connected to the circulation pipe 1322, can backwash the reverse osmosis membrane filter element 13.

[0033] Example 2

[0034] Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below, with reference to the specific working method described in detail:

[0035] like Figure 1 As shown in the preferred embodiment, the detachable connection structure is an elastic clamping member 2, including two arc-shaped clamping heads. Each filter element has an inlet / outlet connection port 15 at both ends. The filter element can be quickly inserted and removed through the elastic deformation of the clamping member 2. Further, the detachable connection structure is specifically defined as the elastic clamping member 2: the two symmetrical arc-shaped clamping heads are made of nylon-reinforced plastic, and their inner diameter is slightly smaller than the outer diameter of the filter element connection port 15. When replacing the filter element, press the sides of the clamping head by hand to expand its elasticity, insert the filter element inlet / outlet connection port 15 into the inner cavity of the clamping head, and release it to spring back and lock the interface. For disassembly, apply pressure in the opposite direction to pull out the filter element. The entire process requires no tools and results in zero wear on the interface.

[0036] In this embodiment, the start / stop control valve is a four-way valve 31, internally connected to four pipe interfaces. When the pure water valve 35 is closed, the four-way valve 31 is activated to simultaneously cut off the output of pure water and wastewater. Furthermore, the start / stop control valve is a four-way valve 31, whose valve body has a cross-shaped channel connecting the four pipe ports. When the pure water valve 35 is closed, its valve stem mechanically pushes the linkage rod of the four-way valve 31, driving the valve core to rotate 90° to simultaneously close the clean water pipe 1311 and the sewage pipe 1321, achieving instantaneous cutoff of the dual water paths and completely eliminating residual water leakage after shutdown.

[0037] In this embodiment, the wastewater regulating valve 33 adjusts its opening by rotating clockwise or counterclockwise. When the purity of the raw water is low, the opening is increased to protect the reverse osmosis membrane filter element 13. Furthermore, the valve core of the wastewater regulating valve 33 adopts a conical structure. When the valve handle is rotated clockwise, the cone moves downward to compress the flow cross section of the sewage pipe 1321, reducing the wastewater discharge and increasing the pure water production rate. When rotated counterclockwise, the cone moves upward to expand the flow cross section, increasing the wastewater discharge for high-impurity water sources to prevent scaling and clogging of the reverse osmosis membrane 13.

[0038] In this embodiment, a DI resin filter element 14 is also included. Its inlet end can be selectively connected to the outlet of the water purification pipe 1311 through a transmission pipeline. Furthermore, when the user needs pure water, the inlet of the DI resin filter element 14 is connected to the end of the water purification pipe 1311 through a transmission pipeline. The ion exchange resin further adsorbs residual minerals, and finally high-purity water is obtained from the outlet end of the filter element.

[0039] In this embodiment, the flushing valve is a ball valve 34, which is opened selectively according to the cleanliness of the water source to guide high-pressure water flow into the sewage pipe 1321 to flush the reverse osmosis membrane filter element 13. Furthermore, the flushing valve is a ball valve 34, with its inlet end connected to the high-pressure pump outlet diversion pipe and its outlet end connected to the near-membrane end of the sewage pipe 1321. When the ball valve 34 is opened, the high-pressure water flow flows in the reverse direction into the wastewater side of the reverse osmosis membrane 13, stripping away calcium and magnesium ion scale on the membrane surface. The scale is then discharged into the sewer along with the opened wastewater regulating valve 33.

[0040] In this embodiment, the inlet of the PP cotton filter element 11 is connected to an external water source, and the outlet is connected to the reverse osmosis membrane filter element 13 via the granular carbon filter element 12, forming a graded filtration path. Furthermore, the inlet of the PP cotton filter element 11 is directly connected to the tap water pipe, and the outlet is connected to the inlet of the granular carbon filter element 12 via a quick-connect pipe 32. The outlet of the granular carbon filter element is connected to the inlet chamber of the reverse osmosis membrane 13 via a high-pressure pump, forming a unidirectional irreversible water flow path to ensure orderly filtration by each filter element.

[0041] The working process of this utility model is as follows:

[0042] When the equipment is started, the external water source first enters the PP cotton filter element 11. The water flow penetrates the dense fiber layer inside the filter element, intercepting large particles of impurities such as rust and silt. Then, it flows into the granular carbon filter element 12 through the connecting pipe 32. The activated carbon adsorption layer captures residual chlorine, odors and organic pollutants. The water flow after preliminary purification is pressurized by the high-pressure pump and enters the reverse osmosis membrane filter element 13. Water molecules penetrate the semi-permeable membrane under pressure to form pure water, while impurities such as heavy metals and minerals are intercepted and concentrated into wastewater. At this time, the water flow is split at the end of the reverse osmosis membrane: pure water enters the clean water pipe 1311 from the clean water outlet 131, while wastewater flows into the sewage pipe 1321 from the sewage outlet 132. During the flow of pure water to the end of the purified water pipe 1311, it is subject to dual regulation by the four-way valve 31 and the pure water valve 35: if the pure water valve 35 is closed, its mechanical linkage causes the four-way valve 31 to close simultaneously, instantly cutting off the dual pathways of pure water and wastewater to achieve shutdown; if the pure water valve 35 is opened, pure water can be directly output or introduced into the DI resin filter element 14 through a branch pipe for deep removal of residual ions. At the same time, the wastewater regulating valve 33 changes the opening of the sewage pipe 1321 by rotating the valve core—clockwise tightening reduces wastewater discharge and increases pure water production, counterclockwise loosening expands the discharge of high-impurity water sources to protect the reverse osmosis membrane; some wastewater flows back to the pre-filter element for secondary filtration through the circulation pipe 1322. During regular maintenance, the ball valve 34 is opened to inject high-pressure purified water back into the sewage pipe 1321, flushing away scale on the surface of the reverse osmosis membrane before discharge, completing the self-cleaning cycle.

[0043] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0044] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0045] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water purifier with easy filter replacement and adjustable wastewater ratio, comprising multi-stage filter cartridges and a transmission pipeline network, characterized in that: The multi-stage filter elements are connected in sequence and include at least a PP cotton filter element (11), a granular carbon filter element (12), and a reverse osmosis membrane filter element (13). The reverse osmosis membrane filter element (13) has a clean water outlet (131) and a sewage outlet (132) at its outlet end. Adjacent filter elements are fixed by a detachable connection structure. The transmission pipeline includes a connecting pipe (32) and a multi-stage control mechanism. The multi-level control mechanism includes: Start-stop control valve: located between the clean water pipe (1311) and the sewage pipe (1321), to control the flow of water; Pure water valve (35): located at the end of the pure water pipe (1311); Wastewater regulating valve (33): dynamically regulates the amount of wastewater discharged, so that the amount of wastewater discharged is inversely proportional to the amount of pure water produced; Flushing valve: Connects to the sewage pipe (1321) and is used for flushing the reverse osmosis membrane; The sewage pipe (1321) is equipped with a circulation pipe (1322).

2. The pure water machine with adjustable wastewater ratio and convenient filter cartridge replacement as described in claim 1, characterized in that: The detachable connection structure is an elastic clamp (2), which includes two arc-shaped clamps and inlet / outlet connection ports (15) at both ends of each filter element. The filter element can be quickly inserted and removed by the elastic deformation of the clamp (2).

3. The pure water machine with adjustable wastewater ratio and convenient filter replacement according to claim 1, characterized in that: The start / stop control valve is a four-way valve (31) with four internal pipe interfaces. When the pure water valve (35) is closed, the four-way valve (31) is linked to simultaneously cut off the output of pure water and wastewater.

4. The pure water machine with adjustable wastewater ratio and convenient filter cartridge replacement according to claim 1, characterized in that: The wastewater regulating valve (33) adjusts its opening by rotating clockwise or counterclockwise. When the purity of the raw water is low, the opening is increased to protect the reverse osmosis membrane filter element (13).

5. The pure water machine with adjustable wastewater ratio and convenient filter replacement according to claim 1, characterized in that: It also includes a DI resin filter cartridge (14), whose inlet end can be selectively connected to the outlet of a water purification pipe (1311) via a transmission pipeline network.

6. The pure water machine with adjustable wastewater ratio and convenient filter cartridge replacement according to claim 1, characterized in that: The flushing valve is a ball valve (34), which is opened according to the cleanliness of the water source to introduce high-pressure water into the sewage pipe (1321) to flush the reverse osmosis membrane filter element (13).

7. The pure water machine with adjustable wastewater ratio and convenient filter cartridge replacement according to claim 1, characterized in that: The PP cotton filter element (11) has its inlet end connected to an external water source, and its outlet end is connected to the reverse osmosis membrane filter element (13) via the granular carbon filter element (12) to form a graded filtration path.

Images