Pressure reducing valve and water purifying equipment

Abstract

The utility model discloses a pressure reducing valve and water purifying equipment, the pressure reducing valve comprises: a valve body which is a tubular assembly, the first end of the valve body is used for being communicated with a water outlet pipe; the valve element is a tubular assembly and is arranged at the first end in the valve body, an annular protrusion is arranged at the first end of the valve element, an inner channel is formed in the valve element, and a through hole used for communicating the inner channel with the exterior of the valve body is formed in the annular protrusion; the valve rod is arranged at the first end in the valve element in a sliding manner; the fastener is fixed at the second end in the valve core; the elastic piece is arranged between the valve rod and the fastening piece, and the elastic piece is a stainless steel assembly; the connector is connected to the second end of the valve body and used for being communicated with a water supply pipe. The gasket is arranged on the valve rod and used for reducing the size of the through hole when the valve rod moves towards the fastener. According to the pressure reducing valve and the water purifying equipment, the valve body, the valve element, the valve rod, the fastening piece, the connector and the gasket are all plastic pieces, the elastic piece is a stainless steel assembly, and the problem of heavy metal precipitation caused by long-time use can be fully solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, and more specifically, to a pressure reducing valve. In addition, the utility model also relates to a water purification equipment comprising the pressure reducing valve. Background Art

[0002] With the continuous improvement of living standards and the rapid development of science and technology, people have higher and higher requirements for water quality, and there are more and more types of water purification equipment in household water pipelines. The water use of users living in high-rise buildings is basically completed through secondary pressure supply. The high water inlet pressure in the pipeline will cause damage to some water-using equipment, so it is necessary to install a pressure reducing device.

[0003] Existing pressure reducing valves are basically all metal shells, which are easily rusted or damaged due to corrosion by water flow, or the metal shell may rust and deteriorate and pollute the water flow; in addition, the metal material of the metal valve head generally contains heavy metals, which will precipitate into the water. The water flowing through the valve head is contaminated by the precipitated heavy metals, thereby affecting human health.

[0004] In summary, how to avoid heavy metal precipitation in a pressure reducing valve is a problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a pressure reducing valve, whose valve body, valve core, valve stem, fasteners, joints and gaskets are all plastic parts, and the elastic parts are stainless steel components, which can avoid the precipitation of heavy metals caused by rust of the pressure reducing valve and prevent water source pollution.

[0006] Another object of the utility model is to provide a water purification device comprising the pressure reducing valve.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A pressure reducing valve, comprising:

[0009] The valve body is a tubular component, and the first end of the valve body is used to communicate with the water outlet pipe;

[0010] The valve core is a tubular component and is disposed at a first end of the valve body, the first end of the valve core is provided with an annular protrusion, an inner channel is provided in the valve core, and a through hole for connecting the inner channel with the outside of the valve body is provided on the annular protrusion;

[0011] A valve stem slidably disposed at a first end inside the valve core;

[0012] A fastener fixed to the second end inside the valve core;

[0013] An elastic member, disposed between the valve stem and the fastener, the elastic member being a stainless steel component;

[0014] A connector, connected to the second end of the valve body and used for communicating with a water supply pipe;

[0015] a gasket, disposed on the valve stem, the gasket being used to reduce the size of the through hole when the valve stem moves toward the fastener;

[0016] The valve body, the valve core, the valve stem, the fastener and the joint are all plastic parts, and the gasket is an elastic component.

[0017] Preferably, a nut threadedly connected to the nut is provided on a side of the joint facing away from the valve body, and the valve body and the joint are fixed to the nut via the nut.

[0018] Preferably, a valve head is provided at the second end of the valve core, and the valve head includes a first convex rib and a second convex rib. An annular groove is provided on the outer periphery of the joint facing the valve body, a water inlet is provided in the middle of the joint, the second convex rib is abutted against the joint, and the first convex rib is clamped with the annular groove on the outer periphery of the second end of the valve core.

[0019] Preferably, the first end of the valve stem is a threaded end, and an annular limiting protrusion is provided on the outer periphery of the first end of the valve stem and is threadedly connected to the plug cap, and the gasket is arranged between the limiting protrusion and the plug cap.

[0020] Preferably, the valve stem is provided with a first circular hole opening toward the fastener, the fastener is provided with a second circular hole corresponding to the first circular hole, the two ends of the elastic member are respectively inserted into the first circular hole and the second circular hole, the outer periphery of one end of the fastener facing away from the elastic member is provided with an external thread, the inner periphery of the second end of the valve core is provided with an internal thread, and the connection method between the valve core and the fastener is a threaded connection.

[0021] Preferably, the outer periphery of the annular protrusion, the outer periphery of the valve stem close to the fastener end, the middle part of the valve stem, the outer periphery of the fastener close to the elastic member end and the outer periphery of the joint close to the fastener end are all provided with annular grooves for installing the sealing assembly.

[0022] Preferably, the valve body, the valve core, the valve stem, the fastener, the valve head, the joint and the plugging cap are all integrally formed plastic parts.

[0023] Preferably, the valve body and the water outlet pipe as well as the joint and the water supply pipe are fixedly connected by hot melting.

[0024] A water purification device comprises a pressure reducing valve, wherein the pressure reducing valve is any one of the pressure reducing valves described above.

[0025] The utility model provides a pressure reducing valve, wherein a valve core is arranged in a valve body, a joint is arranged at the second end of the valve body, a valve stem and a fastener are arranged in the valve core, the valve stem and the fastener are connected by an elastic member, a gasket is arranged on the side of the valve stem close to the through hole, when water flows into the joint through a water supply pipe, the water flows into between the valve body and the valve core through the joint, and then flows into an inner channel and the first end of the valve body through the through hole, a part of the water flows into the water outlet pipe from the first end of the valve body, and another part of the water flows through the inner channel to apply pressure to the valve stem, when the water flow pressure is higher than a preset value, the water flow can push the valve stem and squeeze the elastic member, so that the valve stem moves toward the fastener, and the valve stem drives the gasket to move toward the through hole, thereby reducing the flow rate of the water flow to reduce the water pressure of the water flow entering the water outlet pipe.

[0026] Compared with the background technology, the valve body, valve core, valve stem, fasteners, joints and gaskets of the pressure reducing valve in the present application are all plastic parts, and the elastic parts are stainless steel components, which can fully avoid the problem of heavy metal precipitation caused by long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 A cross-sectional view of the pressure reducing valve provided by the utility model;

[0029] Figure 2 A cross-sectional view of the valve body provided by the utility model;

[0030] Figure 3 A cross-sectional view of the valve core provided by the utility model;

[0031] Figure 4 A cross-sectional view of the valve stem provided by the utility model;

[0032] Figure 5 A cross-sectional view of the fastener provided by the utility model;

[0033] Figure 6 A cross-sectional view of the valve head provided by the utility model;

[0034] Figure 7 A schematic diagram of the structure of the nut provided by the utility model;

[0035] Figure 8 A cross-sectional view of the connector provided by the utility model;

[0036] Fig. 9 This is a schematic diagram of the water flow direction inside the pressure reducing valve provided by the utility model.

[0037] Figures 1 to 9 , the reference numerals include:

[0038] 1 is the valve body, 2 is the valve core, 201 is the annular protrusion, 202 is the through hole, 203 is the inner channel, 3 is the valve stem, 301 is the limiting protrusion, 302 is the first circular hole, 4 is the elastic member, 5 is the fastener, 501 is the second circular hole, 6 is the valve head, 601 is the first convex rib, 602 is the second convex rib, 7 is the nut, 8 is the nut, 9 is the joint, 901 is the annular groove, 902 is the water inlet, 10 is the gasket, and 11 is the plugging cap. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] The core of the utility model is to provide a pressure reducing valve, whose valve body, valve core, valve stem, fasteners, joints and gaskets are all plastic parts, and the elastic parts are stainless steel components, which can avoid the precipitation of heavy metals caused by rust of the pressure reducing valve and prevent water source from being polluted.

[0041] Another core of the utility model is to provide a water purification device including the pressure reducing valve.

[0042] The present application provides a pressure reducing valve, comprising: a valve body 1, a valve core 2, a valve stem 3, an elastic member 4, a fastener 5, a joint 9, and a gasket 10;

[0043] The valve body 1 is a tubular component, and the first end of the valve body 1 is used to communicate with the water outlet pipe;

[0044] The valve core 2 is a tubular component and is disposed at the first end of the valve body 1. The first end of the valve core 2 is provided with an annular protrusion 201. The valve core 2 is provided with an inner channel 203. The annular protrusion 201 is provided with a through hole 202 for connecting the inner channel 203 with the outside of the valve body 1.

[0045] The valve stem 3 is slidably disposed at a first end inside the valve core 2;

[0046] The fastener 5 is fixed to the second end inside the valve core 2;

[0047] The elastic member 4 is arranged between the valve stem 3 and the fastener 5, and the elastic member 4 is a stainless steel component;

[0048] The connector 9 is connected to the second end of the valve body 1 and is used to communicate with the water supply pipe;

[0049] The gasket 10 is provided on the valve stem 3, and the gasket 10 is used to reduce the size of the through hole 202 when the valve stem 3 moves toward the fastener 5;

[0050] In addition, the valve body 1, the valve core 2, the valve stem 3, the fastener 5 and the joint 9 are all plastic parts, and the gasket 10 is an elastic component.

[0051] Specifically, as attached Figure 1 As shown, the first end of the valve core 2 is provided with an annular protrusion 201, and a plurality of through holes 202 are provided on the peripheral surface of the annular protrusion 201 close to the fastener 5. The through holes 202 connect the gap between the valve body 1 and the valve core 2 to the inner channel 203. Fig. 9 As shown, the through hole 202, the inner channel 203 and the water outlet at the first end of the valve body 1 can be regarded as a three-way pipe. Water flows in from the water inlet 902 at the second end of the valve body 1, enters the gap between the valve body 1 and the valve core 2, and then flows into the through hole 202. The water flow after entering the through hole 202 is divided, one part flows into the water outlet pipe at the first end of the valve body 1 for user use, and the other part flows into the inner channel 203. When the water pressure of this part exceeds the preset value, the water flow can push the valve stem 3 and compress the elastic member 4 at the same time. In this process, the gasket 10 arranged on the valve stem 3 moves toward the through hole 202 as the valve stem 3 moves, so that the water flow rate flowing into the water outlet pipe from the through hole 202 is reduced, and the water pressure flowing into the water outlet pipe is also reduced. Since the elastic member 4 remains in a compressed state and the annular protrusion 201 abuts against the inner periphery of the valve body 1, when the water pressure of the water flow entering the through hole 202 is small, the position of the valve stem 3 remains unchanged.

[0052] In addition, the valve body 1, valve core 2, valve stem 3, fastener 5 and joint 9 of the pressure reducing valve are all plastic components, and the elastic part 4 is a stainless steel component. Under the condition of selecting plastic components and stainless steel components, the long-term use of the pressure reducing valve will not cause precipitation of heavy metals, thereby ensuring the water quality of the water flowing out of the outlet pipe.

[0053] Optionally, the elastic member 4 may be a spring, and other elastic members with lower cost and telescopic ability may also be selected.

[0054] Optionally, the gasket 10 may be a rubber piece, which has low cost and high cost performance.

[0055] On the basis of the above embodiment, a nut 8 threadedly connected to the nut 7 is provided on the side of the connector 9 facing away from the valve body 1 , and the valve body 1 and the connector 9 are fixed to the nut 7 via the nut 8 .

[0056] Specifically, as attached Figure 2As shown, the outer periphery of the second end of the valve body 1 is engaged with the nut 7, and the structure of the nut 8 is as shown in the attached Figure 7 As shown, the connector 9 is fixed to the outer periphery of the second end of the valve body 1 by means of a nut 7 and a nut 8, and is easy to disassemble or assemble by means of a threaded connection, and the tightness of the structure can also be ensured.

[0057] Optionally, the nut 7 can be an integrated component with the valve body 1 to facilitate mass production without the need for separate assembly and installation.

[0058] On the basis of the above embodiment, a valve head 6 is provided at the second end of the valve core 2, and the valve head 6 includes a first convex rib 601 and a second convex rib 602. An annular groove 901 is provided on the outer periphery of the connector 9 facing the valve body 1, and a water inlet 902 is provided in the middle of the connector 9. The second convex rib 602 is abutted against the connector 9, and the first convex rib 601 is clamped with the annular groove 901 on the outer periphery of the second end of the valve core 2.

[0059] For details, please refer to the attached Figure 6 With attached Figure 8 The first rib 601 on the inner side of the valve head 6 is an annular rib and the side of the valve head 6 facing the water inlet 902 is a conical structure. An annular groove is provided on the outer periphery of the second end of the valve core 2. The first rib 601 is engaged with the annular groove. The second rib 602 is an annular part and is arranged in contact with the inner periphery of the joint 9. The water flow can be guided by the first rib 601, which is convenient for water pressure regulation.

[0060] In some embodiments, the first end of the valve stem 3 is a threaded end, and an annular limiting protrusion 301 is provided on the outer periphery of the first end of the valve stem 3 and is threadedly connected to the plug cap 11 , and the gasket 10 is disposed between the limiting protrusion 301 and the plug cap 11 .

[0061] Specifically, the structure of the valve stem 3 can be referred to in the attached Figure 4 The first end of the valve stem 3 can be regarded as a T-shaped structure, and a thread is provided on the outer periphery of the first end thereof. The size of the limiting protrusion 301 should be larger than the inner diameter of the gasket 10 so that the blocking cap 11 can cooperate with the limiting protrusion 301 to clamp the gasket 10. The valve body 1 is a hollow tubular member, and a plurality of supporting protrusions are provided on the inner periphery of the first end thereof. The plurality of supporting protrusions are evenly arranged along the inner periphery of the valve body 1 to realize the positioning of the blocking cap 11 and ensure the structural stability.

[0062] Optionally, the valve stem 3, the plugging cap 11 and the gasket 10 may be an integrated component, which is convenient for mass production and does not need to be installed separately.

[0063] On the basis of the above embodiment, a first circular hole 302 opening toward the fastener 5 is provided on the valve stem 3, a second circular hole 501 corresponding to the first circular hole 302 is provided on the fastener 5, two ends of the elastic member 4 are respectively inserted into the first circular hole 302 and the second circular hole 501, an outer thread is provided on the outer periphery of one end of the fastener 5 away from the elastic member 4, an inner thread is provided on the inner periphery of the second end of the valve core 2, and the connection method between the valve core 2 and the fastener 5 is a threaded connection.

[0064] For details, please refer to the attached Figure 4 With attached Figure 5 The valve stem 3 and the fastener 5 are provided with corresponding first circular holes 302 and second circular holes 501, and the first circular holes 302 and the second circular holes 501 are provided with a plurality of limiting protrusions, which can limit the two ends of the elastic member 4, so that the central axis of the valve stem 3, the elastic member 4 and the fastener 5 is coaxially arranged, and the fastener 5 is threadedly connected to the valve core 2 to prevent relative sliding.

[0065] Optionally, the first circular hole 302 and the second circular hole 501 may be other shapes as long as they can fit with the elastic member 4 .

[0066] Based on the above embodiment, the outer periphery of the annular protrusion 201, the outer periphery of the end of the valve stem 3 close to the fastener 5, the middle part of the valve stem 3, the outer periphery of the end of the fastener 5 close to the elastic member 4 and the outer periphery of the end of the joint 9 close to the fastener 5 are all provided with annular grooves for installing the sealing assembly.

[0067] Specifically, before installing the valve core 2, valve stem 3, elastic member 4 and fastener 5, a sealing assembly needs to be installed in the annular groove, and then the sealing between the valve stem 3 and the valve core 2 and the sealing between the fastener 5 and the valve core 2 are achieved through threaded connection.

[0068] Optionally, the sealing component may be a rubber ring, which has a lower cost and is convenient for bulk purchase and use.

[0069] On the basis of the above-mentioned embodiment, the valve body 1, the valve core 2, the valve stem 3, the fastener 5, the valve head 6, the joint 9 and the plug cap 11 are all integrally formed plastic parts.

[0070] Specifically, the valve body 1, the valve core 2, the valve stem 3, the fastener 5, the valve head 6, the connector 9, and the plugging cap 11 are preferably manufactured by integral molding by injection molding to facilitate mass production.

[0071] On the basis of the above-mentioned embodiment, the valve body 1 and the water outlet pipe as well as the joint 9 and the water supply pipe are fixedly connected by hot melting.

[0072] Specifically, the pressure reducing valve is connected to the water outlet pipe and the water supply pipe by hot melting. The cost of the pressure reducing valve and the cost of hot melting are both low, which can avoid leakage points at the connection. In addition, the overall weight of the pressure reducing valve is reduced, and the installation is convenient and quick.

[0073] In addition to the above-mentioned pressure reducing valve, the present invention also provides a water purification device including the pressure reducing valve disclosed in the above-mentioned embodiment. For the structures of other parts of the water purification device, please refer to the prior art and will not be described in detail herein.

[0074] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0075] The above is a detailed introduction to a pressure reducing valve and water purification equipment provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A pressure reducing valve, It is characterized in that include: The valve body (1) is a tubular component, and the first end of the valve body (1) is used to communicate with the water outlet pipe; The valve core (2) is a tubular component and is arranged at a first end in the valve body (1); the first end of the valve core (2) is provided with an annular protrusion (201); an inner channel (203) is provided in the valve core (2); and a through hole (202) is provided on the annular protrusion (201) for connecting the inner channel (203) with the outside of the valve body (1); A valve stem (3) slidably disposed at a first end inside the valve core (2); A fastener (5) fixed to the second end inside the valve core (2); An elastic member (4) is arranged between the valve stem (3) and the fastener (5), and the elastic member (4) is a stainless steel component; A connector (9) connected to the second end of the valve body (1) and used for communicating with a water supply pipe; a gasket (10) disposed on the valve stem (3), the gasket (10) being used to reduce the size of the through hole (202) when the valve stem (3) moves toward the fastener (5); The valve body (1), the valve core (2), the valve stem (3), the fastener (5) and the joint (9) are all plastic parts, and the gasket (10) is an elastic component.

2. The pressure reducing valve according to claim 1, It is characterized in that A nut (8) threadedly connected to the nut (7) is provided on the side of the joint (9) facing away from the valve body (1); the valve body (1) and the joint (9) are fixed to the nut (7) via the nut (8).

3. The pressure reducing valve according to claim 2, It is characterized in that The second end of the valve core (2) is provided with a valve head (6), and the valve head (6) includes a first convex rib (601) and a second convex rib (602). The outer periphery of the connector (9) on one side facing the valve body (1) is provided with an annular groove (901). A water inlet (902) is provided in the middle of the connector (9). The second convex rib (602) is arranged in contact with the connector (9), and the first convex rib (601) is clamped with the annular groove (901) on the outer periphery of the second end of the valve core (2).

4. The pressure reducing valve according to claim 3, It is characterized in that The first end of the valve stem (3) is a threaded end, and an annular limiting protrusion (301) is provided on the outer periphery of the first end of the valve stem (3) and is threadedly connected to the plug cap (11), and the gasket (10) is arranged between the limiting protrusion (301) and the plug cap (11).

5. The pressure reducing valve according to any one of claims 1 to 4, It is characterized in that The valve stem (3) is provided with a first circular hole (302) opening toward the fastener (5), and the fastener (5) is provided with a second circular hole (501) corresponding to the first circular hole (302). The two ends of the elastic member (4) are respectively inserted into the first circular hole (302) and the second circular hole (501). The outer periphery of one end of the fastener (5) facing away from the elastic member (4) is provided with an external thread, and the inner periphery of the second end of the valve core (2) is provided with an internal thread. The connection method between the valve core (2) and the fastener (5) is a threaded connection.

6. The pressure reducing valve according to claim 5, It is characterized in that The outer periphery of the annular protrusion (201), the outer periphery of the valve stem (3) close to the end of the fastener (5), the middle part of the valve stem (3), the outer periphery of the end of the fastener (5) close to the elastic member (4) and the outer periphery of the joint (9) close to the end of the fastener (5) are all provided with annular grooves for installing the sealing assembly.

7. The pressure reducing valve according to claim 4, It is characterized in that The valve body (1), the valve core (2), the valve stem (3), the fastener (5), the valve head (6), the joint (9) and the plugging cap (11) are all integrally formed plastic parts.

8. The pressure reducing valve according to claim 7, It is characterized in that The valve body (1) and the water outlet pipe, as well as the joint (9) and the water supply pipe, are fixedly connected by hot melting.

9. A water purification device, comprising a pressure reducing valve, It is characterized in that The pressure reducing valve is the pressure reducing valve according to any one of claims 1 to 8.

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