Water purifier needle valve body and water purifier
By setting a sealing gasket in the needle valve of the water purifier and using vertical and horizontal tightening mechanisms to improve sealing performance, the problem of easy corrosion of threaded seals is solved, achieving a higher sealing effect and reducing maintenance costs.
Patent Information
- Application Number
- CN202510713236.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-10-28
AI Technical Summary
Traditional water purifier needle valves rely on threaded sealing between the valve core and seat, which is susceptible to water corrosion, affecting sealing performance and increasing equipment maintenance and replacement costs.
A sealing gasket is placed between the valve core and the valve seat, and the sealing gasket is squeezed vertically and laterally by a vertical clamping mechanism and a horizontal clamping mechanism, respectively, to prevent the sealing gasket from shifting position. Combined with the drive assembly, flow control is achieved, and sealing performance is improved.
It effectively prevents water corrosion from affecting the mating position of the valve core and valve seat, improves sealing performance, and reduces equipment maintenance and replacement costs.
Smart Images
Figure CN120845574A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of needle valve structure technology, and specifically discloses a needle valve body for a water purifier and a water purifier. Background Technology
[0002] A needle valve in a water purifier controls fluid flow by adjusting the distance between its needle-shaped valve core and seat. The valve core is a slender needle-shaped structure; rotating or pushing the core changes the flow cross-sectional area, thus regulating the fluid flow. Adjusting the fluid flow stabilizes the concentrate flow rate, preventing excessive pressure difference across the filter membrane due to insufficient concentrate discharge, which could damage the membrane or reduce water production. For example, when the raw water quality is poor, the concentrate flow rate can be increased to reduce the burden on the filter membrane; when the water quality is good, the concentrate ratio can be reduced to increase the water production rate.
[0003] However, the current needle valves for water purifiers mainly rely on threaded connections for sealing between the valve core and the valve seat. During long-term use, the threaded connections are easily corroded by water flow, affecting the accuracy of the connection. This, in turn, affects the accuracy of adjusting the valve core and the sealing performance between the valve seat and the valve core, leading to increased costs for subsequent maintenance and replacement of the needle valve. Therefore, in view of this, the present invention provides a needle valve body and a water purifier for water purifiers to solve the above problems. Summary of the Invention
[0004] The purpose of this invention is to solve the problem that the valve core and valve seat of traditional water purifier needle valves rely on threaded sealing, which is easily corroded by water flow, affecting the sealing performance and increasing the cost of equipment maintenance and replacement.
[0005] To achieve the above objectives, the basic solution of the present invention provides a needle valve body for a water purifier, comprising:
[0006] The valve seat has an internal regulating chamber, an inlet pipe at the bottom communicating with the regulating chamber, and an outlet pipe and a pressure relief pipe on the side wall communicating with the regulating chamber.
[0007] The valve core is connected to the top of the valve seat and extends into the regulating cavity. The valve core includes a connecting shaft that mates with the valve seat and an regulating shaft that is connected to the connecting shaft and used to control the water flow rate. The regulating cavity is provided with a fixing ring that mates with the regulating shaft.
[0008] The sealing assembly includes a sealing gasket disposed at the top of the regulating chamber and located between the valve body and the valve seat, a vertical clamping mechanism for vertically and horizontally pressing the sealing gasket, and a horizontal clamping mechanism.
[0009] The principle and effect of this basic scheme are as follows:
[0010] Compared with the prior art, the present invention sets a sealing gasket between the valve core and the valve seat, and uses a vertical clamping mechanism and a horizontal clamping mechanism to vertically and horizontally compress the sealing gasket, respectively. This prevents the sealing gasket from shifting due to excessive water pressure in the regulating chamber, thus affecting the sealing effect between the valve core and the valve seat. It also effectively prevents water flow from corroding the mating position between the valve core and the valve seat. This solves the problem that the valve core and valve seat of traditional water purifier needle valves rely on threaded mating for sealing, which is easily corroded by water flow, affecting the sealing performance and increasing the cost of equipment maintenance and replacement.
[0011] Furthermore, it also includes a drive assembly, which comprises a servo motor, a rotating rod driven by the servo motor, a connecting rod splinedly connected to the rotating rod and fixedly connected to the valve core, and a threaded sleeve fixed to the valve seat and threadedly connected to the connecting rod. The servo motor drives the rotating rod to rotate, which in turn drives the connecting rod to rotate via the splined connection. During rotation, the connecting rod engages with the threaded sleeve and moves axially, thereby driving the valve core to move axially, thus achieving flow control and regulation of the water flow, while also improving the sealing performance of the threaded engagement.
[0012] Furthermore, it also includes a servo housing for fixing the servo and a connecting seat located between the servo housing and the valve seat, with the threaded sleeve disposed within the connecting seat. The connecting seat serves to protect the threaded sleeve.
[0013] Furthermore, the valve seat has a sealing groove at its top to accommodate the sealing gasket, and a portion of the connecting seat is located directly above the sealing groove. This further tightens the sealing gasket vertically, preventing it from shifting and affecting the sealing effect.
[0014] Furthermore, the vertical clamping mechanism includes an annular groove in the seat body located directly above the sealing groove, a first spring in the annular groove, and a clamping ring at the end of the first spring. The elastic potential energy of the first spring is used to press the clamping ring tightly against the surface of the sealing gasket, thereby achieving a vertical clamping effect on the sealing gasket.
[0015] Furthermore, the lateral clamping mechanism includes several mounting slots on the side wall of the sealing groove, second springs respectively disposed in each mounting slot, and clamping blocks respectively disposed at the ends of the second springs. The elastic potential energy of the second springs is used to press the clamping blocks tightly against the side wall of the sealing gasket, thereby achieving a lateral clamping effect on the sealing gasket.
[0016] Furthermore, the end of the clamping block is provided with an arc-shaped surface that fits the outer wall of the sealing gasket, and the top of the arc-shaped surface is provided with a guide slope. This not only improves the tightness of the fit between the clamping block and the sealing gasket, but also facilitates the placement of the sealing gasket into the sealing groove for engagement.
[0017] Furthermore, a guide rod is slidably connected within the mounting groove. One end of the guide rod passes through the bottom of the mounting groove and is slidably connected to the valve seat, while the other end of the guide rod is connected to the clamping block. This serves to limit and guide the clamping block.
[0018] Furthermore, the regulating cavity is provided with an elastic sleeve fitted onto the valve core, and the valve core is provided with a push block that can compress the elastic sleeve. The elastic sleeve can provide a sealing effect on the pressure relief pipe when the water flow is low, and can improve the sealing performance between the valve seat and the valve core when the water flow is high. As the water flow increases, it is compressed by the push block, further improving the sealing performance between the valve seat and the valve core.
[0019] Based on the same inventive concept, this invention discloses a water purifier, including a housing, a filtration system disposed within the housing, a control and pressure assembly, and a water storage and piping assembly, wherein the control and pressure assembly includes the aforementioned needle valve body.
[0020] The water purifier of this invention, by setting a sealing gasket between the valve core and the valve seat, and by using a vertical clamping mechanism and a horizontal clamping mechanism to vertically and horizontally compress the sealing gasket, respectively, prevents the sealing gasket from shifting due to excessive water pressure in the regulating chamber, thus affecting the sealing effect between the valve core and the valve seat. This effectively prevents water flow from corroding the mating position between the valve core and the valve seat, thereby solving the problem that the valve core and valve seat of traditional water purifier needle valves rely on threaded mating for sealing, which is easily corroded by water flow, affecting the sealing performance and increasing the cost of equipment maintenance and replacement. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This paper shows a schematic diagram of a needle valve body for a water purifier and a water purifier according to an embodiment of this application;
[0023] Figure 2 This paper shows a schematic diagram of the valve body and valve seat of a water purifier according to an embodiment of the present application.
[0024] Figure 3 It shows Figure 2 Enlarged view of section A in the middle. Detailed Implementation
[0025] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.
[0026] The reference numerals in the accompanying drawings include: servo housing 1, connecting seat 2, valve seat 3, water inlet pipe 4, water outlet pipe 5, pressure relief pipe 6, retaining ring 7, adjusting shaft 8, push block 9, elastic sleeve 10, rotating rod 11, connecting rod 12, threaded sleeve 13, connecting shaft 14, sealing gasket 15, clamping ring 16, first spring 17, clamping block 18, and second spring 19.
[0027] A needle valve body for a water purifier, implementing, for example Figure 1 As shown: It includes a valve seat 3, a valve core, a drive assembly for adjusting the position of the valve core, and a sealing assembly for sealing the valve seat 3 and the valve core.
[0028] like Figure 1 and Figure 2 As shown, the valve seat 3 has an internal regulating chamber. The bottom of the valve seat 3 has an inlet pipe 4 that communicates with the regulating chamber. The side wall of the valve seat 3 has an outlet pipe 5 and a pressure relief pipe 6 that communicate with the regulating chamber. The valve core is connected to the top of the valve seat 3 and extends into the regulating chamber. The valve core includes a connecting shaft 14 that mates with the valve seat 3 and an regulating shaft 8 that is connected to the connecting shaft 14 and used to control the water flow rate. The regulating shaft 8 has a flat surface with an equal diameter and a tapered surface with a gradually decreasing diameter. Correspondingly, the regulating chamber has a fixing ring 7 that mates with the regulating shaft 8. By utilizing the non-passing position of the regulating shaft 8 of the valve core and the fixing ring 7, the water flow rate can be regulated.
[0029] like Figure 1 and Figure 2 As shown, the drive assembly includes a servo motor, a rotating rod 11 driven by the servo motor, a connecting rod 12 splinedly connected to the rotating rod 11 and fixedly connected to the valve core, and a threaded sleeve 13 fixed to the valve seat 3 and threadedly connected to the connecting rod 12. The servo motor is mounted and fixed through a servo motor housing 1, and a connecting seat 2 is provided between the servo motor housing 1 and the valve seat 3. The connecting seat 2 and the valve seat 3 are fixed to each other by bolts. A through hole is provided in the middle of the connecting seat 2, and the threaded sleeve 13 is located in the through hole and fixed to the through hole. The servo motor drives the rotating rod 11 to rotate, and then drives the connecting rod 12 to rotate through the splined connection. During the rotation, the connecting rod 12 engages with the threaded sleeve 13 and produces axial movement, which in turn drives the valve core to move axially, thereby realizing the flow control and regulation of the water flow, and also improving the sealing performance of the threaded engagement position.
[0030] like Figure 2 and Figure 3As shown, the sealing assembly includes a sealing groove located on the top of the valve body with a diameter larger than that of the regulating cavity, a sealing gasket 15 located in the sealing groove, a vertical clamping mechanism for vertically pressing the sealing gasket 15 and a horizontal clamping mechanism for horizontally pressing the sealing gasket 15. The vertical clamping mechanism includes an annular groove in the seat body located directly above the sealing groove of the connecting seat 2, a first spring 17 in the annular groove, and a clamping ring 16 at the end of the first spring 17. The elastic potential energy of the first spring 17 presses the clamping ring 16 tightly against the surface of the sealing gasket 15, thereby achieving a vertical clamping effect on the sealing gasket 15. The horizontal clamping mechanism includes several mounting grooves on the side wall of the sealing groove, second springs 19 respectively in each mounting groove, and clamping blocks respectively at the ends of the second springs 19. The elastic potential energy of the second springs 19 presses the clamping blocks tightly against the side wall of the sealing gasket 15, thereby achieving a horizontal clamping effect on the sealing gasket 15. Correspondingly, a guide rod is slidably connected in the mounting groove. One end of the guide rod passes through the bottom of the mounting groove and is slidably connected to the valve seat 3. The other end of the guide rod is connected to the clamping block. The end of the clamping block is provided with an arc-shaped surface adapted to the outer wall of the sealing gasket 15. The arc-shaped surface improves the tightness of the fit between the clamping block and the sealing gasket 15. The top of the arc-shaped surface is provided with a guide slope, which facilitates the placement of the sealing gasket 15 into the sealing groove for mating.
[0031] like Figure 2 As shown, the regulating cavity is provided with an elastic sleeve 10 fitted on the valve core, and the valve core is provided with a push block 9 that can compress the elastic sleeve 10. When the water flow is small, the elastic sleeve 10 plays a sealing role on the pressure relief pipe 6. When the water flow is large, the elastic sleeve 10 improves the sealing performance between the valve seat 3 and the valve core, and is squeezed by the push block 9 as the water flow increases, further improving the sealing performance between the valve seat 3 and the valve core.
[0032] Based on the same inventive concept, this embodiment discloses a water purifier, including a housing, a filtration system disposed within the housing, a control and pressure assembly, and a water storage and piping assembly. The filtration system includes a pretreatment filter layer, a filter membrane assembly, such as an RO reverse osmosis membrane. The control and pressure assembly includes a high and low pressure switch, a solenoid valve, a wastewater proportioner, a check valve, and the aforementioned needle valve body. The water storage and piping assembly includes a pressure storage tank, a high-pressure pump, a faucet, and water pipes.
[0033] This embodiment sets a sealing gasket 15 between the valve core and the valve seat 3, and uses a vertical clamping mechanism and a horizontal clamping mechanism to vertically and horizontally compress the sealing gasket 15, respectively. This prevents the sealing gasket 15 from shifting due to excessive water pressure in the regulating chamber, thus affecting the sealing effect between the valve core and the valve seat 3. It effectively prevents water flow from corroding the mating position between the valve core and the valve seat 3, thereby solving the problem that the valve core and valve seat 3 of traditional water purifier needle valves rely on threaded mating for sealing, which is easily corroded by water flow and affects the sealing performance, increasing the cost of equipment maintenance and replacement.
[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. A needle valve body for a water purifier, characterized in that, include: The valve seat has an internal regulating chamber, an inlet pipe at the bottom communicating with the regulating chamber, and an outlet pipe and a pressure relief pipe on the side wall communicating with the regulating chamber. The valve core is connected to the top of the valve seat and extends into the regulating cavity. The valve core includes a connecting shaft that mates with the valve seat and an regulating shaft that is connected to the connecting shaft and used to control the water flow rate. The regulating cavity is provided with a fixing ring that mates with the regulating shaft. The sealing assembly includes a sealing gasket disposed at the top of the regulating chamber and located between the valve body and the valve seat, a vertical clamping mechanism for vertically and horizontally pressing the sealing gasket, and a horizontal clamping mechanism.
2. The needle valve body for a water purifier according to claim 1, characterized in that, It also includes a drive assembly, which includes a servo motor, a rotating rod driven by the servo motor, a connecting rod splined to the rotating rod and fixedly connected to the valve core, and a threaded sleeve fixed to the valve seat and threadedly connected to the connecting rod.
3. The needle valve body for a water purifier according to claim 2, characterized in that, It also includes a servo housing for fixing the servo and a connecting seat between the servo housing and the valve seat, wherein the threaded sleeve is disposed in the connecting seat.
4. The needle valve body for a water purifier according to claim 3, characterized in that, The valve seat has a sealing groove at its top to accommodate the sealing gasket, and part of the connecting seat is located directly above the sealing groove.
5. The needle valve body for a water purifier according to claim 4, characterized in that, The vertical clamping mechanism includes an annular groove in the seat body located directly above the sealing groove, a first spring in the annular groove, and a clamping ring at the end of the first spring.
6. The needle valve body for a water purifier according to claim 4, characterized in that, The lateral clamping mechanism includes several mounting slots on the side wall of the sealing groove, a second spring respectively installed in each mounting slot, and clamping blocks respectively installed at the ends of the second springs.
7. The needle valve body for a water purifier according to claim 6, characterized in that, The end of the clamping block is provided with an arc-shaped surface that fits the outer wall of the sealing gasket, and the top of the arc-shaped surface is provided with a guide slope.
8. A needle valve body for a water purifier according to claim 6 or 7, characterized in that, A guide rod is slidably connected inside the mounting groove. One end of the guide rod passes through the bottom of the mounting groove and is slidably connected to the valve seat. The other end of the guide rod is connected to the clamping block.
9. The needle valve body for a water purifier according to claim 1, characterized in that, The regulating cavity is provided with an elastic sleeve fitted on the valve core, and the valve core is provided with a push block that can compress the elastic sleeve.
10. A water purifier, comprising a housing, a filtration system disposed within the housing, a control and pressure assembly, and a water storage and piping assembly, characterized in that, The control and pressure assembly includes any one of the needle valve bodies described in 1-8.