Plastic valve head central purifier

Abstract

The utility model discloses a kind of plastic valve head central water purifiers, it is related to water treatment equipment technical field, including valve body, outer tube, filter bottle, framework and composite filter element. Valve body adopts plastic material, is equipped with import end and export end, the tooth pattern insert of valve body lower end is integrally injection molded. Outer tube is located inside valve body, is set close to the import end of valve body, valve ball is installed in outer tube, the flow direction of water flow in outer tube is controlled by valve ball. Filter bottle is connected with valve body by tooth pattern insert, bottom is equipped with blowdown ball valve. Framework is located in filter bottle, framework outer sleeve is equipped with filter screen, filter screen is used to carry out primary filtration;Composite filter element is located in framework, is used to carry out secondary filtration. The above-mentioned plastic valve head central water purifier, valve body adopts plastic material, is conducive to the problem of heavy metal precipitation isolation. Two-stage filtration mode of filter screen and composite filter element combination is used, water quality can be effectively purified, and customer water quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment technology, and in particular to a central water purifier with a plastic valve head. Background Technology

[0002] Most existing central water purifiers use metal valve heads, which, while possessing a certain degree of strength, have the following drawbacks:

[0003] Risk of heavy metal leaching: Long-term contact between the metal valve head and water flow may cause heavy metal ions to leach out, affecting water quality safety;

[0004] Complex manufacturing process: Metal valve heads require multiple machining processes, resulting in high costs.

[0005] In addition, existing central water purifiers have a single filtration stage: relying on only a single-stage filter, they cannot effectively remove residual chlorine, odors, and fine particles, resulting in limited purification effects.

[0006] Therefore, there are still shortcomings and deficiencies in the existing technology. How to provide a plastic valve head central water purifier that can avoid the risk of heavy metal leaching, is easy to process, and has a good water purification effect is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] The purpose of this utility model is to provide a central water purifier with a plastic valve head, which solves the technical problems of existing central water purifiers having a single filtration stage, resulting in limited water purification effect, and using metal valve heads, which poses a risk of heavy metal leaching, and is also complex to process and costly.

[0008] To achieve the above objectives, this utility model provides a central water purifier with a plastic valve head, comprising:

[0009] The valve body is made of plastic and has an inlet end and an outlet end. The lower end of the valve body is integrally injection molded with a toothed insert.

[0010] An outer cylinder is located inside the valve body, near the inlet end of the valve body. A valve ball is installed inside the outer cylinder, and the flow direction of water inside the outer cylinder is controlled by the valve ball.

[0011] The filter bottle is connected to the valve body via the threaded insert, and a drain ball valve is provided at the bottom.

[0012] A frame is disposed inside the filter bottle, and a filter screen is provided outside the frame for primary filtration.

[0013] A composite filter element is disposed within the frame and is used for secondary filtration.

[0014] Preferably, it further includes an adapter disposed between the outer cylinder and the filter bottle, the adapter having a first annular cavity and a second annular cavity, the first annular cavity being connected to the lower port of the outer cylinder, and the second annular cavity being connected to the composite filter element through an upper cover.

[0015] Preferably, the lower part of the skeleton is provided with a plurality of water passage holes evenly distributed along the circumference, the middle part of the skeleton is provided with annular ribs along the circumference, and the annular ribs are provided with a plurality of limiting ribs evenly distributed along the circumference.

[0016] Preferably, a water distributor is provided at the middle of the outer side of the frame, the water distributor comprising:

[0017] A ring-shaped component is fitted over the skeleton.

[0018] Multiple oblique blades are evenly distributed on the outer side of the annular component to create turbulent water flow by dividing the water path;

[0019] Several locking strips are provided on the inner side of the annular component for engaging with the annular ribs of the skeleton.

[0020] Several slots are provided on the inner side of the annular component, and the axial direction of the slots is parallel to the axial direction of the annular component. The slots are used to cooperate with the limiting ribs of the skeleton to limit the movement and prevent the water distributor from rotating along the axial direction.

[0021] Preferably, a lower cover is fitted onto the bottom of the frame, and the filter screen is located between the water distributor and the lower cover.

[0022] Preferably, the outer cylinder is further provided with a silicone sleeve, which encloses the valve ball. The right end of the outer cylinder is threaded with a clamping member, which is used to clamp the silicone sleeve to prevent the valve ball from loosening and leaking water.

[0023] Preferably, the valve body has two mounting holes, and a valve stem and a pressure gauge are respectively installed in the two mounting holes. The valve stem is connected to the valve ball and is used to control the flow direction of water. A buckle is also provided outside the mounting hole, which is used to engage the retaining spring of the valve stem / the retaining spring of the pressure gauge.

[0024] Preferably, the valve body has connecting members at its inlet and outlet ends, the connecting members comprising:

[0025] A heat fusion connector is used for heat fusion connection with an external water pipe.

[0026] A nut is fitted over the hot melt head;

[0027] A threaded fitting has a polygonal inner hole, and the threaded fitting is threadedly connected to the nut.

[0028] The valve body has polygonal connectors at its inlet and outlet ends that mate with the polygonal inner hole.

[0029] Preferably, the valve body is further provided with limiting grooves at the inlet and outlet ends, and retaining rings are provided at the limiting grooves.

[0030] Preferably, a sealing element is installed at the bottom of the filter bottle, the inner groove of the sealing element is provided with a three-proof block, and the sewage ball valve is threadedly connected to the lower end of the sealing element.

[0031] Compared to the aforementioned background technology, the plastic valve head central water purifier provided by this utility model has a valve body made of plastic, which is beneficial for preventing the leaching of heavy metals. Furthermore, the toothed insert is integrally molded by injection molding, which not only reduces processing difficulty and cost but also ensures the connection strength between the valve body and the filter bottle. The two-stage filtration method, which combines a filter screen and a composite filter element, achieves multi-level and multi-functional water purification compared to a single-stage filtration system that only uses a filter screen, improving the filtration effect and ensuring the quality of water for customers. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a structural cross-sectional view of the plastic valve head central water purifier provided in an embodiment of the present utility model;

[0034] Figure 2 A schematic diagram of the external structure of the plastic valve head central water purifier provided in this embodiment of the utility model;

[0035] Figure 3 This is a cross-sectional view of the valve body in the plastic valve head central water purifier provided in this embodiment of the utility model;

[0036] Figure 4 A cross-sectional view of the outer cylinder of the central water purifier with plastic valve head provided in this embodiment of the utility model;

[0037] Figure 5 A schematic diagram of the skeleton in the central water purifier with plastic valve head provided in this embodiment of the utility model;

[0038] Figure 6 A schematic diagram of the structure of the adapter in the central water purifier with a plastic valve head provided in this embodiment of the utility model;

[0039] Figure 7A schematic diagram of the water distributor in the central water purifier with a plastic valve head provided in this embodiment of the utility model;

[0040] Figure 8 A schematic diagram of the threaded assembly in the central water purifier with a plastic valve head provided in this embodiment of the utility model;

[0041] Figure 9 A schematic diagram of the clamping component in the central water purifier with a plastic valve head provided in this embodiment of the utility model;

[0042] Figure 10 A schematic diagram of the structure of the valve ball and valve stem in the plastic valve head central water purifier provided in this embodiment of the utility model;

[0043] Figure 11 A three-dimensional structural diagram of the valve body in the central water purifier with a plastic valve head provided in an embodiment of this utility model;

[0044] Figure 12 A schematic diagram illustrating the operation of the central water purifier with a plastic valve head during filtration, provided in an embodiment of this utility model.

[0045] Figure 13 A schematic diagram illustrating the operation of the central water purifier with a plastic valve head during flushing, provided for an embodiment of this utility model.

[0046] Figure 14 This is a schematic diagram illustrating the backwashing operation of the plastic valve head central water purifier provided in this embodiment of the utility model.

[0047] Figures 1 to 14 Chinese reference numerals: 1. Hot melt head; 2. Nut; 3. Snap ring; 4. Threaded fitting; 401. Inner hole; 402. Threaded part; 403. Raised edge; 5. Outer cylinder; 501. Second annular groove; 502. Internal thread; 6. Silicone sleeve; 7. Valve ball; 8. Clamping part; 801. External thread; 802. Fourth annular groove; 803. Mounting groove; 9. Valve body; 901. Inlet end; 902. Outlet end; 903. Mounting hole; 904. Snap fastener; 905. Connector; 906. Limiting groove; 10. Adapter; 1001. First annular cavity; 002. Second annular cavity; 1003. First annular groove; 11. Skeleton; 1101. Water passage hole; 1102. Annular rib; 1103. Limiting rib; 1104. Third annular groove; 12. Water distributor; 1201. Annular component; 1202. Inclined blade; 1203. Locking strip; 1204. Groove; 13. Filter screen; 14. Lower cover; 15. Sealing component; 16. Three-proof block; 17. Sewage ball valve; 18. Filter bottle; 19. Composite filter element; 20. Threaded insert; 21. Upper cover; 22. Valve stem; 23. Pressure gauge; 24. Knob. Detailed Implementation

[0048] 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.

[0049] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] This invention provides a central water purifier with a plastic valve head. The valve body 9 is made of plastic, which helps to solve the problem of heavy metal leaching. It employs a two-stage filtration system combining a filter screen 13 and a composite filter element 19, effectively purifying water and ensuring the quality of water for users.

[0051] Please refer to this as well. Figures 1 to 14 The plastic valve head central water purifier provided by this utility model includes a valve body 9, an outer cylinder 5, a filter bottle 18, a frame 11, and a composite filter element 19.

[0052] The valve body 9 is made of plastic and has an inlet end 901 and an outlet end 902. A threaded insert 20 is integrally injection-molded onto the lower end of the valve body 9. In this embodiment, the valve body 9 is a three-way valve structure, with the inlet end 901 at the left end and the outlet end 902 at the right end. Compared to using metal, using plastic for the valve body 9 is beneficial for preventing heavy metal leaching and can be manufactured by injection molding, which is less difficult and less costly. The threaded insert 20 is a metal threaded insert, integrally molded with the valve body 9 by injection molding.

[0053] The outer cylinder 5 is located inside the valve body 9, near the inlet end 901 of the valve body 9. A valve ball 7 is installed inside the outer cylinder 5, controlling the flow direction of water within it. The left port of the outer cylinder 5 is connected to the inlet end 901 of the valve body 9. Water flows from the inlet end 901 of the valve body 9 through the left port of the outer cylinder 5 into the outer cylinder 5, and the flow direction is controlled by the valve ball 7 inside the outer cylinder 5. The valve ball 7 is a three-way ball valve.

[0054] The filter bottle 18 is connected to the valve body 9 via a threaded insert 20, and a drain ball valve 17 is provided at the bottom of the filter bottle 18. The filter bottle 18 is connected to the valve body 9 via a metal threaded insert 20 to ensure connection strength. A sealing ring is provided between the valve body 9 and the filter bottle 18, so that the two form a relative seal after connection, preventing liquid from flowing in or out from the gap between them.

[0055] The filter element 11 is housed inside the filter bottle 18, and a filter screen 13 is fitted over the filter element 11 for primary filtration. The composite filter element 19 is housed inside the filter element 11 for secondary filtration. The filter screen 13 performs primary filtration of the source water, which is then filtered secondaryly by the composite filter element 19. Compared to a single-stage filtration system that only uses the filter screen 13, this two-stage filtration system ensures the quality of the customer's water.

[0056] The composite filter element 19 combines different filter materials to achieve multi-level, multi-functional water purification, ensuring filtration effectiveness. In this embodiment, the composite filter element 19 can be a pleated membrane + PP cotton, a pleated membrane + carbon fiber, or PP cotton + carbon rod, depending on the user's actual needs. The pleated membrane typically refers to a pleated microporous filter membrane, which has a large filtration area and can effectively filter small particles and some microorganisms; the PP cotton is polypropylene fiber cotton, mainly used to filter large particulate impurities such as silt and rust; the activated carbon fiber has high adsorption capacity and is used to remove residual chlorine, odors, and organic pollutants; the carbon rod is a rod-shaped structure made of activated carbon powder and is used to adsorb harmful substances.

[0057] Additionally, please refer to Figure 2 The drain ball valve 17 is also equipped with a knob 24. After the water purifier has been used for a period of time, rotating the knob 24 can open the drain ball valve 17 to flush out the sewage through water flow. After flushing, rotating the knob 24 can close the drain ball valve 17.

[0058] In some embodiments, please refer to the following: Figure 1 and Figure 6 The plastic valve head central water purifier provided by this utility model also includes a connector 10 disposed between the outer cylinder 5 and the filter bottle 18. The connector 10 has a first annular cavity 1001 and a second annular cavity 1002. The first annular cavity 1001 is connected to the lower port of the outer cylinder 5, and the second annular cavity 1002 is connected to the composite filter element 19 through the upper cover 21. Figure 1 Taking the direction in the middle as an example, the first annular cavity 1001 is located on the left side, and the second annular cavity 1002 is located in the middle.

[0059] By controlling the ball valve 7, the lower port of the outer cylinder 5 can be connected to the first annular cavity 1001. Water flows through the first annular cavity 1001 into the space between the inner wall of the filter bottle 18 and the frame 11, so that it can be used for primary and secondary filtration through the filter screen 13 and the composite filter element 19. At this time, opening the drain ball valve 17 allows for flushing with water, and the wastewater is discharged from the filter bottle 18 through the drain ball valve 17. Opening the drain ball valve 17 connects the right port of the outer cylinder 5 to the second annular cavity 1002. Water flows through the second annular cavity 1002 and the upper cover 21 into the interior of the composite filter element 19, allowing for reverse flushing. Finally, the wastewater is discharged from the filter bottle 18 through the drain ball valve 17.

[0060] Please refer to Figure 1 and Figure 6 The adapter 10 has a first annular groove 1003 along its outer circumference. A sealing ring is provided in the first annular groove 1003. By setting the sealing ring, the adapter 10 and the valve body 9 form a relative seal, preventing liquid from flowing in or out from the gap between them and affecting the performance.

[0061] Please refer to Figure 1 and Figure 4 The outer cylinder 5 has a second annular groove 501 on the left and lower ports. A sealing ring is provided in the second annular groove 501. By setting the sealing ring, a relative seal is formed between the outer cylinder 5 and the valve body 9, and between the outer cylinder 5 and the adapter 10, to prevent liquid from flowing in or out from the gap between the two and affecting the performance.

[0062] In some embodiments, please refer to the following: Figure 1 and Figure 5 The lower part of the skeleton 11 is provided with a plurality of water passage holes 1101 evenly distributed along the circumference, the middle part of the skeleton 11 is provided with annular ribs 1102 along the circumference, and the annular ribs 1102 are provided with a plurality of limiting ribs 1103 evenly distributed along the circumference.

[0063] The filter screen 13 is fitted around the multiple water passage holes 1101 at the bottom of the frame 11. After the water flows through the first annular cavity 1001 and enters the space between the inner wall of the filter bottle 18 and the frame 11, the filter screen 13 performs primary filtration on the water flow. The water flow after primary filtration enters the interior of the frame 11 through the water passage holes 1101, and then undergoes secondary filtration through the composite filter element 19. Finally, the water flow is discharged from the outlet end 902 of the valve body 9 through the second annular cavity 1002 inside the composite filter element 19.

[0064] The middle and lower parts of the skeleton 11 are provided with a third annular groove 1104 along the circumferential direction, and a sealing ring is provided in the third annular groove 1104.

[0065] In some embodiments, please refer to the following: Figure 1 , Figure 5 and Figure 7 A water distributor 12 is provided on the outer middle part of the frame 11. The water distributor 12 includes:

[0066] The ring-shaped component 1201 is fitted onto the outside of the frame 11.

[0067] Multiple inclined blades 1202 are set at an angle and evenly distributed on the outside of the annular component 1201 to form a turbulent water flow by dividing the water path; by setting multiple inclined blades 1202, the inflowing liquid is evenly distributed.

[0068] Several locking strips 1203 are provided on the inner side of the annular member 1201 for engaging with the annular ribs 1102 of the skeleton 11.

[0069] Several slots 1204 are provided on the inner side of the annular component 1201. The axial direction of the slots 1204 is parallel to the axial direction of the annular component 1201. The slots 1204 are used to cooperate with the limiting ribs 1103 of the skeleton 11 to limit the movement and prevent the water distributor 12 from rotating along the axial direction. The slots 1204 include a transition section and a main body section with the same diameter. The main body section is located above the transition section, and the diameter of the transition section gradually increases from the side closer to the main body section to the side farther away from the main body section.

[0070] In some embodiments, please refer to Figure 1 The bottom of the frame 11 is fitted with a lower cover 14, and the filter screen 13 is located between the water distributor 12 and the lower cover 14. The lower cover 14 is fitted onto the bottom of the frame 11 and supports the filter screen 13 to ensure structural stability.

[0071] In some embodiments, please refer to Figure 1 , Figure 4 and Figure 8 The outer cylinder 5 is also equipped with a silicone sleeve 6 inside, which wraps the valve ball 7. The right end of the outer cylinder 5 is threaded with a clamping part 8, which is used to clamp the silicone sleeve 6 to prevent the valve ball 7 from loosening and leaking water.

[0072] Specifically, the right end of the outer cylinder 5 is provided with an internal thread 502, and the clamping member 8 is provided with an external thread 801. The clamping member 8 achieves a threaded connection by engaging the external thread 801 with the internal thread 502 of the outer cylinder 5.

[0073] The clamping component 8 has a fourth annular groove 802 on its exterior, and a sealing ring is installed in the fourth annular groove 802. By setting the sealing ring, the mating gap between the clamping component 8 and the outer cylinder 5 is sealed. The clamping component 8 also has a polygonal mounting groove 803 inside, which is used for docking with tooling for easy installation.

[0074] In some embodiments, please refer to the following: Figure 1 , Figure 2 , Figure 10 and Figure 11 The valve body 9 is provided with two mounting holes 903, and a valve stem 22 and a pressure gauge 23 are respectively installed in the two mounting holes 903. The valve stem 22 is connected to the valve ball 7 and is used to control the flow direction of water. A buckle 904 is also provided outside the mounting hole 903. The buckle 904 is used to snap the retaining ring of the valve stem 22 / pressure gauge 23.

[0075] The valve stem 22 controls the valve ball 7, thereby controlling the flow direction of water in the outer cylinder 5; the pressure gauge 23 is used to monitor the internal pressure of the water purifier, and the user can make adjustments when the pressure is too high.

[0076] In some embodiments, please refer to the following: Figure 1 , Figure 2 , Figure 8 and Figure 11The valve body 9 has connecting parts at its inlet end 901 and outlet end 902, the connecting parts including:

[0077] The heat fusion head 1 is used for heat fusion connection with external water pipes, such as connecting to household water pipes.

[0078] Nut 2 is fitted onto the outside of the hot melt head 1.

[0079] The threaded fitting 4 has a polygonal inner hole 401 and is threadedly connected to the nut 2. The threaded fitting 4 has a threaded portion 402, through which the threaded fitting 4 is threadedly connected to the nut 2.

[0080] The valve body 9 has a polygonal connector 905 at its inlet end 901 and outlet end 902, which mates with the polygonal inner hole 401. The polygonal inner hole 401 and the polygonal connector 905 fit together to prevent axial rotation of the threaded part 402 when it mates with the nut 2, thus preventing inconvenience during installation. The hot-melt head 1 is fixed to the end of the valve body 9 by the limiting and holding action of the nut 2 and the threaded fitting 4.

[0081] In some embodiments, please refer to the following: Figure 1 , Figure 2 and Figure 11 The valve body 9 is also provided with a limiting groove 906 at the inlet end 901 and the outlet end 902, and a retaining ring 3 is provided at the limiting groove 906. Specifically, the threaded kit 4 is provided with an annular protrusion 403, which forms the aforementioned polygonal inner hole 401. The retaining ring 3 is used to limit the annular protrusion 403, thereby preventing the threaded kit 4 from coming off the end of the valve body 9.

[0082] In addition, a sealing gasket is provided between the end of the hot melt head 1 and the end of the valve body 9. The hot melt head 1 is fixed to the end of the valve body 9 under the limiting and holding action of the nut 2 and the threaded kit 4. The sealing gasket is pressed between the end of the hot melt head 1 and the end of the valve body 9. By setting the sealing gasket, a relative seal is formed between the hot melt head 1 and the valve body 9 to prevent liquid from flowing in or out from the gap between them, thus ensuring the sealing effect.

[0083] In some embodiments, please refer to Figure 1 A sealing element 15 is installed at the bottom of the filter bottle 18. The inner groove of the sealing element 15 is provided with a three-proof block 16. The drain ball valve 17 is threadedly connected to the lower end of the sealing element 15.

[0084] The sealing element 15 is located below the lower cover 14, and the inner groove is opened on the top of the sealing element 15. The three-proof block 16 is located in the inner groove. The three-proof block 16 is made of soft elastic material (such as silicone or rubber) for water hammer prevention, explosion prevention, and freezing prevention. It absorbs the instantaneous pressure generated by water hammer through deformation, avoiding damage to the internal structure of the water purifier. Under high pressure, the three-proof block 16 further deforms to buffer the internal pressure of the water purifier and prevent the filter bottle 18, connectors, and other components from bursting due to overpressure. The elastic space of the three-proof block 16 can accommodate a certain volume of ice expansion, avoiding the rigid structure from directly bearing the expansion pressure and reducing the risk of freezing and cracking.

[0085] By incorporating the three-proof block 16, it effectively copes with three common extreme working conditions: water hammer impact, high-pressure explosion, and low-temperature freezing, significantly improving the safety and service life of the water purifier, making it especially suitable for areas with complex water quality or fluctuating ambient temperatures.

[0086] The sealing element 15 has a fifth annular groove in the middle, and a sealing ring is installed in the fifth annular groove. By setting the sealing ring, a relative seal is formed between the sealing element 15 and the filter bottle 18, preventing liquid from flowing in or out from the gap between them, and ensuring the sealing effect.

[0087] Please refer to this as well. Figures 12 to 14 ( Figures 12 to 14 (In the image, the arrow indicates the direction of water flow). The working process of the plastic valve head central water purifier provided by this utility model is as follows:

[0088] During filtration, the drain ball valve 17 is closed, and the source water enters from the inlet end 901 of the valve body 9. The control valve ball 7 connects the lower port of the outer cylinder 5 with the first annular cavity 1001. The water flows through the first annular cavity 1001 and enters the space between the inner wall of the filter bottle 18 and the frame 11. The filter screen 13 performs primary filtration on the water flow. After primary filtration, the water flows through the water passage 1101 into the interior of the frame 11, and then through the composite filter element 19 for secondary filtration. Finally, the water flows out from the interior of the composite filter element 19 through the second annular cavity 1002 and is discharged from the outlet end 902 of the valve body 9 to the end of the water supply.

[0089] During sewage discharge, there are two modes: flushing mode and backwashing mode. In flushing mode, the sewage discharge ball valve 17 is opened, and water flows through the first annular cavity 1001 into the space between the inner wall of the filter bottle 18 and the frame 11. The water flows to flush the outer surface of the filter screen 13, and the sewage is finally discharged through the sewage discharge ball valve 17. In backwashing mode, the sewage discharge ball valve 17 is opened, and the control valve ball 7 allows water to flow from the right port of the outer cylinder 5 through the second annular cavity 1002 into the interior of the composite filter element 19. The water flows from the interior of the composite filter element 19 outward to perform reverse flushing, flushing the inner surface of the filter screen 13. The sewage is finally discharged through the sewage discharge ball valve 17.

[0090] The plastic valve head central water purifier provided by this utility model has a valve body 9 made of plastic, which helps to prevent the leaching of heavy metals. Furthermore, the toothed insert 20 is integrally molded using injection molding, which not only reduces processing difficulty and cost but also ensures the connection strength between the valve body 9 and the filter bottle 18. The two-stage filtration method, combining a filter screen 13 and a composite filter element 19, effectively purifies water quality compared to a single-stage filtration system using only the filter screen 13, ensuring the quality of the water used by customers.

[0091] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0092] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A central water purifier with a plastic valve head, characterized in that, include: The valve body (9) is made of plastic and has an inlet end (901) and an outlet end (902). The lower end of the valve body (9) is integrally injection molded with a toothed insert (20). The outer cylinder (5) is located inside the valve body (9) and is positioned near the inlet end (901) of the valve body (9). A valve ball (7) is installed inside the outer cylinder (5) to control the flow direction of water inside the outer cylinder (5). The filter bottle (18) is connected to the valve body (9) through the threaded insert (20), and a drain ball valve (17) is provided at the bottom; A frame (11) is disposed inside the filter bottle (18), and a filter screen (13) is provided on the outer sleeve of the frame (11). The filter screen (13) is used for primary filtration. A composite filter element (19) is disposed within the skeleton (11) for secondary filtration.

2. The central water purifier with plastic valve head according to claim 1, characterized in that, It also includes a connector (10) disposed between the outer cylinder (5) and the filter bottle (18). The connector (10) is provided with a first annular cavity (1001) and a second annular cavity (1002). The first annular cavity (1001) is connected to the lower port of the outer cylinder (5), and the second annular cavity (1002) is connected to the composite filter element (19) through the upper cover (21).

3. The central water purifier with plastic valve head according to claim 1, characterized in that, The lower part of the skeleton (11) is provided with a plurality of water passage holes (1101) evenly distributed along the circumference, the middle part of the skeleton (11) is provided with annular ribs (1102) along the circumference, and the annular ribs (1102) are provided with a plurality of limiting ribs (1103) evenly distributed along the circumference.

4. The central water purifier with plastic valve head according to claim 3, characterized in that, A water distributor (12) is provided at the middle of the outer side of the frame (11), and the water distributor (12) includes: The ring-shaped component (1201) is fitted over the skeleton (11); Multiple oblique blades (1202) are evenly arranged on the outer side of the annular component (1201) to form turbulent water flow by dividing the water path; Several locking strips (1203) are provided on the inner side of the annular member (1201) for engaging with the annular ribs (1102) of the skeleton (11); A plurality of slots (1204) are provided on the inner side of the annular member (1201). The axial direction of the slots (1204) is parallel to the axial direction of the annular member (1201). The slots (1204) are used to cooperate with the limiting ribs (1103) of the skeleton (11) to limit the movement and prevent the water distributor (12) from rotating along the axial direction.

5. The central water purifier with plastic valve head according to claim 4, characterized in that, The bottom of the frame (11) is fitted with a lower cover (14), and the filter screen (13) is located between the water distributor (12) and the lower cover (14).

6. The central water purifier with a plastic valve head according to claim 1, characterized in that, The outer cylinder (5) is also provided with a silicone sleeve (6) inside, which wraps the valve ball (7). The right end of the outer cylinder (5) is threaded with a clamping member (8), which is used to clamp the silicone sleeve (6) to prevent the valve ball (7) from loosening and leaking water.

7. The central water purifier with plastic valve head according to claim 1, characterized in that, The valve body (9) is provided with two mounting holes (903), and a valve stem (22) and a pressure gauge (23) are respectively installed in the two mounting holes (903). The valve stem (22) is connected to the valve ball (7) and is used to control the flow direction of water. A buckle (904) is also provided outside the mounting hole (903), and the buckle (904) is used to snap the retaining ring of the valve stem (22) / the retaining ring of the pressure gauge (23).

8. The central water purifier with plastic valve head according to claim 1, characterized in that, The valve body (9) has connecting members at its inlet end (901) and outlet end (902), the connecting members including: A heat fusion head (1) is used for heat fusion connection with an external water pipe; Nut (2) is fitted over the hot melt head (1); The threaded fitting (4) has a polygonal inner hole (401) and is threadedly connected to the nut (2); The valve body (9) is provided with polygonal connectors (905) at its inlet end (901) and outlet end (902) that mate with the polygonal inner hole (401).

9. The central water purifier with a plastic valve head according to claim 8, characterized in that, The valve body (9) is also provided with a limiting groove (906) at the inlet end (901) and the outlet end (902), and a retaining ring (3) is provided at the limiting groove (906).

10. The central water purifier with a plastic valve head according to claim 1, characterized in that, The filter bottle (18) is equipped with a sealing element (15) at the bottom. The inner groove of the sealing element (15) is provided with a three-proof block (16). The sewage ball valve (17) is threadedly connected to the lower end of the sealing element (15).

Images