CN112762208A

CN112762208A - Constant flow throttling unloading multipurpose valve

Info

Publication number: CN112762208A
Application number: CN202011643410.XA
Authority: CN
Inventors: 李文明; 杨高
Original assignee: Shenzhen Hengzhiyun Technology Co Ltd
Current assignee: Shenzhen Hengzhiyun Technology Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-07
Also published as: WO2022143937A1

Abstract

The invention relates to a constant-flow throttling unloading multipurpose valve, which comprises: the valve body is provided with a water inlet, a water outlet, an unloading port, a first channel, a second channel and a valve port, and the second channel is communicated with the valve port, the water outlet and the unloading port; the first valve core is arranged in the first channel, one end of the first valve core is spaced from the hole wall of the first channel, the other end of the first valve core is sealed with the hole wall of the first channel in a sliding clearance manner and divides the first channel into a first space and a second space communicated with the second channel, and the first space is communicated with the water inlet and the valve port; the first elastic piece is arranged in the second space and is abutted against the valve body and the first valve core; the second valve core is arranged in the valve body, elastically abuts against the unloading port and is far away from the unloading port when the water pressure is greater than a set value; the feeding rod is in threaded connection with the valve body; one end of the third valve core is elastically abutted in the second channel, and the other end of the third valve core can be abutted with the feed rod and is used for moving under the pushing of the feed rod so as to adjust the water inlet section area of the valve port; the constant flow, unloading and throttling functions are integrated on a valve body.

Description

Constant flow throttling unloading multipurpose valve

Technical Field

The invention relates to the technical field of valves, in particular to a constant-flow throttling unloading multipurpose valve.

Background

Along with the continuous improvement of computer technology, automatic control technique and people's quality of life, have bath waterway system and clean waterway system and can realize ordinary washing and women abluent intelligent closestool lid to its intelligence is washd, clean health, is preheated advantages such as comfortable, convenient operation, energy-conserving power saving, receives people's favor gradually.

At present, the bath waterway system and the clean waterway system of the intelligent toilet cover all include a throttling component capable of realizing the throttling function, a pressure regulating component with constant pressure when controlling the flow output and an unloading component for realizing the pressure relief function, but the prior throttling component, the pressure regulating component and the unloading component are connected into the waterway system as independent elements and need to be independently fixed and connected through pipelines, so that the waterway system has a complex structure, a large integral volume, a large occupied structural space and poor system stability, and the pressure loss is also caused by the connection of multiple places, the pipeline joint has the risk of leakage, and the product performance is poor.

Disclosure of Invention

Therefore, it is necessary to provide a constant-flow throttling unloading multi-purpose valve for solving the problems of large volume and poor product performance caused by more functional components of the existing clean water path system.

A constant-flow throttling unloading multipurpose valve comprises:

the valve body is provided with a water inlet, a water outlet, an unloading port, a first channel, a second channel and a valve port, wherein the second channel is communicated with the valve port, the water outlet and the unloading port;

the first valve core is arranged in the first channel, one end of the first valve core is spaced from the hole wall of the first channel, the other end of the first valve core is sealed with the hole wall of the first channel in a sliding clearance manner and divides the first channel into a first space and a second space communicated with the second channel, and the first space is communicated with the water inlet and the valve port;

the first elastic piece is arranged in the second space and abutted against the valve body and the first valve core;

the second valve core is arranged in the valve body, elastically abuts against the unloading port and is far away from the unloading port when the water pressure is greater than a set value;

the feeding rod is in threaded connection with the valve body;

and one end of the third valve core is elastically abutted in the second channel, and the other end of the third valve core can be abutted with the feed rod and is used for moving under the pushing of the feed rod so as to adjust the water inlet section area of the valve port.

In the constant-flow throttling unloading multipurpose valve, when the water pressure changes, the first space and the second space form a pressure difference, the first valve core moves under the action of the pressure difference to enable the first elastic part to deform, when the first valve core is stressed in a balanced manner, the pressure difference between the first space and the second space is a fixed value, the flow at the valve port is a fixed value, the flow entering the second channel through the valve port is constant, the flow of water discharged from the water outlet is constant, the pressure difference can be automatically adjusted through the inner part when the pressure is increased, the flow of an output end is ensured to be constant, when the water pressure at the unloading port is smaller than a set value, the second valve core is abutted against the unloading port, the water cannot flow out of the unloading port, when the water pressure at the unloading port is larger than the set value, the second valve core is far away from the unloading port under the action of the water pressure at the unloading port, and the. The feed rod moves towards the valve body when the feed rod is rotated in the forward direction, the feed rod pushes the third valve core which is abutted against the feed rod to move towards the valve port in the second channel, the third valve core shields the valve port so that the water inlet cross-sectional area of the valve port is reduced, the feed rod moves towards the outside of the valve body when the feed rod is rotated in the reverse direction, the valve cores move towards the position far away from the valve port along with the feed rod, the third valve core moves away from the end face of the valve port so that the water inlet cross-sectional area of the valve port is increased, the water inlet cross-sectional area of the valve port can be accurately adjusted, and therefore. Therefore, the constant-flow throttling and unloading multipurpose valve integrates the functions of constant flow, unloading and throttling on one valve body, the water inlet cross-sectional area of the valve port is adjusted through the feed rod and the third valve core so as to fix the flow, the pressure difference is automatically adjusted when the water pressure is increased through the first valve core and the first elastic piece, the flow is inconvenient to maintain, and the unloading function when the water pressure is overlarge is realized through the second valve core. And the pipeline and the installation part matched with the pipeline are saved, the leakage risk is reduced, the assembly process is simpler and more convenient, the production efficiency is higher, the production cost is lower, the structure size is smaller, and the system stability and the product performance are better.

In one embodiment, the valve body comprises a cavity, a top cover, a bottom cover and a side cover, wherein:

the cavity body is fixedly connected with the top cover, a first sealing element is arranged between the cavity body and the top cover, the cavity body forms a water inlet, the water outlet and the unloading port, the valve port, a first stepped hole, a first slot hole and a first through hole communicated with the first slot hole and the first stepped hole are formed in the cavity body, the large hole of the first stepped hole and the first slot hole are respectively opened on the surface of the cavity body facing the top cover, the small hole of the first stepped hole is connected with the valve port and the water inlet, and the axis of the first slot hole is parallel to the axis of the first stepped hole and is communicated with the valve port, the water outlet and the unloading port;

the side cover is provided with a first end and a second end along the axis of the unloading port, the first end is hermetically sleeved and locked at the unloading port, and the second valve core is elastically connected in the second end;

the bottom cover is fixed on the end face of the cavity in a sealing mode, a first threaded hole penetrating through the thickness of the bottom cover and coaxial with the first slotted hole is formed in the bottom cover, and the first threaded hole is in threaded connection with the feeding rod.

In one embodiment, the first valve core comprises a partition plate and a valve rod protruding from the partition plate, wherein:

the partition plate is slidably embedded in the large hole of the first stepped hole, and the sectional area of the partition plate is not smaller than the area of the large hole of the first stepped hole along the direction perpendicular to the axis of the large hole of the first stepped hole;

the valve rod is inserted into the small hole of the first stepped hole, and the sectional area is smaller than the area of the small hole of the first stepped hole along the direction perpendicular to the axis of the large hole of the first stepped hole.

In one embodiment, the small hole of the first stepped hole includes a second slot hole coaxial with the large hole of the first stepped hole and communicating with the opening, and a first groove opening on the wall of the second slot hole and extending from the bottom of the large hole of the first stepped hole to the bottom of the second slot hole, the first groove communicating with the valve port.

In one embodiment, the valve rod comprises a first rod part, a second rod part and a third rod part which sequentially protrude from the partition plate, wherein:

the cross sections of the first rod part and the third rod part are the same and are the same as that of the second slotted hole along the direction perpendicular to the axis of the large hole of the first stepped hole, and the cross section of the second rod part is smaller than that of the first rod part;

the first valve core further comprises a third slotted hole, the third slotted hole is opened on the end face, away from the valve rod, of the partition plate, extends to a certain depth towards the interior of the first rod part, and a first connecting hole for communicating the third slotted hole with the second channel is formed in the first elastic piece;

the first valve core further comprises a second stepped hole, a large hole of the second stepped hole is formed in the end face, far away from the second rod portion, of the third rod portion, and a small hole of the second stepped hole extends to one end, close to the first rod portion, of the second rod portion.

In one embodiment, the constant-flow throttling unloading multi-purpose valve further comprises a second sealing element, the first end is provided with a third stepped hole, a large hole of the third stepped hole is opened on the end face of the first end, the third stepped hole is provided with a third stepped face parallel to the end face of the first end, and the second sealing element is arranged on the third stepped face; and a first internal thread is arranged on the wall of the large hole of the third stepped hole, and a first external thread matched with the first internal thread is arranged on the outer wall of the unloading port.

In one embodiment, the constant-flow throttling unloading multipurpose valve further comprises a second elastic piece, the second end is provided with a fourth stepped hole, a large hole of the fourth stepped hole is opened on the third stepped surface, a small hole of the fourth stepped hole extends to the end surface of the second end, the fourth stepped hole is provided with a fourth stepped surface parallel to the end surface of the first end, the second elastic piece is located in a large hole of the fourth stepped hole, one end of the second elastic piece is fixed on the fourth stepped surface, the other end of the second elastic piece is fixedly connected with a second valve core, the elastic direction of the second elastic piece is parallel to the axis of the unloading port, and a second connecting hole communicated with the side cover is formed in the second elastic piece.

In one embodiment, the end of the unloading port is provided with a fifth stepped hole, a large hole of the fifth stepped hole opens at the end face of the unloading port, the valve core is provided with a small end and a large end along the axial direction of the unloading port, and the small hole opening area of the fifth stepped hole is larger than the sectional area of the small end and smaller than the sectional area of the large end.

In one embodiment, the constant-flow throttling unloading multi-purpose valve further comprises a third sealing element, one end of the third sealing element is positioned between the bottom cover and the cavity, and the bottom cover and the cavity jointly press the third sealing element when the bottom cover is fixed on the cavity; the third sealing element bends and extends to form a groove, and the other end of the third sealing element and the third valve element are integrally formed.

In one embodiment, the constant-flow throttling unloading multi-purpose valve further comprises a third elastic element, wherein the third elastic element is arranged in the second channel and abuts against the surface, opposite to the top cover, of the third valve core.

In one embodiment, the constant-flow throttling unloading multipurpose valve further comprises a switch module, wherein the switch module comprises a shell, and a driving unit and a top plug which are arranged in the shell, and the constant-flow throttling unloading multipurpose valve comprises:

the water inlet is communicated with the first channel through a valve hole;

the shell is fixed on the valve body and communicated with the water inlet;

the driving unit is connected with the top plug and used for driving the top plug to be inserted into and tightly push the valve hole or leave the valve hole.

Drawings

FIG. 1 is a schematic structural diagram of a constant-flow throttling unloading multi-purpose valve provided by the invention;

FIG. 2 is an exploded view of a constant flow throttling unloading multi-purpose valve provided by the present invention;

FIG. 3 is a cross-sectional view of a constant flow throttling unloading multi-purpose valve provided by the invention;

fig. 4 is a partial sectional view of a constant-flow throttling unloading multi-purpose valve provided by the invention.

Reference numerals:

10. a constant-flow throttling unloading multipurpose valve;

100. a valve body;

110. a water inlet; 120. a water outlet; 130. a first channel; 131. a first space; 132. a second space; 140. a second channel; 150. a valve port; 160. an unloading port; 161. a fifth stepped hole;

170. a cavity; 171. a first stepped hole; 1711. a second slot; 1712. a first groove; 172. a first through hole; 173. a first slot; 181. a top cover; 182. a bottom cover; 1821. a first threaded hole; 183. a valve bore; 190. a side cover; 191. a first side cap end; 192. a second side cap end; 1911. a third stepped bore; 1912. A third step surface; 1913. a fourth stepped hole; 1914. a fourth step surface;

200. a first elastic member; 210. a first connection hole;

300. a first valve spool;

310. a partition plate; 320. a valve stem; 321. a first rod portion; 322. a second rod portion; 323. a third rod part; 330. A third slot; 340. a second stepped bore;

400. a second valve core; 410. a small end; 420. a large end;

500. a feed bar;

600. a third valve core;

700. a first seal member;

800. a second seal member;

900. a third seal member; 910. a trench;

101. a second elastic member; 1011. a second connection hole;

102. a third elastic member;

103. a switch module; 1031. a housing; 1032. a drive unit; 1033. a top plug; 1034. and (3) an elastic structure.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical scheme provided by the embodiment of the invention is described below by combining the accompanying drawings.

As shown in fig. 1, 2 and 3, the invention provides a constant-flow throttling unloading multipurpose valve 10, which comprises a valve body 100, wherein the valve body 100 integrates constant-flow, unloading and throttling functions, a pipeline and a mounting part matched with the pipeline are omitted, leakage risks are reduced, the assembly process is simple and convenient, the production efficiency is high, the production cost is low, the structure size is small, and the system stability and the product performance are good.

In order to automatically adjust the pressure difference through the inside when the water pressure changes, the flow of the output end is ensured to be constant. The constant-flow throttling unloading multi-purpose valve 10 further comprises a first elastic element 200 and a first valve core 300, wherein:

the valve body 100 is formed with a water inlet 110 and a water outlet 120, the water inlet 110 is connected to the waterway system, and the water outlet 120 is connected to other control waterways or is directly connected to the bidet and the bidet nozzle. The valve body 100 is formed with a first channel 130, a second channel 140 and a valve port 150, the valve port 150 communicates the first channel 130 and the second channel 140, the second channel 140 communicates with the water outlet 120, the first channel 130 communicates with the water inlet 110, and water flows from the water inlet 110 into the first channel 130, passes through the valve port 150 into the second channel 140, and finally flows out from the water outlet 120.

The first valve spool 300 is disposed inside the first passage 130, the first valve spool 300 having a first end and a second end along its axis, the first end being spaced apart from the wall of the first passage 130 to facilitate the passage of water therethrough; the second end is sealed with the hole wall of the first channel 130 by a sliding gap, and the end of the second end divides the first channel 130 into a first space 131 and a second space 132, the first space 131 is communicated with the water inlet 110, the first space 131 is connected with one end of the second channel 140 through the valve port 150, and the second space 132 is connected with the other end of the second channel 140.

The first elastic member 200 is disposed inside the second space 132, and the first elastic member 200 abuts on the opposite surfaces of the valve body 100 and the first valve spool 300, and the elastic direction of the first elastic member 200 is parallel to the axis of the first passage 130. In a specific arrangement, the first elastic member 200 may be a spring, and the first elastic member 200 may also be a cylindrical elastic structure.

In the constant-flow throttling unloading multi-purpose valve 10, when the water pressure changes, the water pressure P1 in the first space 131 and the water pressure P2 in the second space 132 are different to form a pressure difference, the first valve element 300 moves under the action of the pressure difference to deform the first elastic element 200, and when the first valve element 300 moves to the two sides and the force is the same, the first elastic element stops moving, and at this time, the pressure difference Δ P between the first space 131 and the second space 132 is P1-P2 is K (X)₀+ Δ X)/a, wherein the stiffness K of the first elastic member 200 and the pressure area a of the first valve spool 300 are constant values due to deformation of the first elastic member 200The amount Δ X is much smaller than the free length X0 of the first elastic member 200, so that Δ P ≈ KX₀A is a constant value, the flow at the valve port 150

Because the flow coefficient Cd, the area a1 of the valve port 150, the fluid density ρ, and Δ P are all fixed values, the flow at the valve port 150 is constant, and the flow of the water discharged from the water outlet 120 is constant. The water pressure change can be the increase or decrease of the water pressure of the input end connected with the water inlet or the increase or decrease of the water pressure of the output end connected with the water outlet. Therefore, the constant-flow throttling unloading multi-purpose valve 10 can automatically adjust the pressure difference in the pressure change process, and ensure the constant flow rate of the output end.

In order to unload when the water pressure is too high, the constant-flow throttling unloading multi-purpose valve 10 further comprises a second valve core 400, the second valve core 400 is arranged in the valve body 100, the valve body 100 is provided with an unloading opening 160, the second valve core 400 is elastically abutted against the unloading opening 160, and the second valve core 400 is far away from the unloading opening 160 when the water pressure is larger than the set value. In the constant-flow throttling unloading multi-purpose valve 10, when the water pressure of the unloading port 160 is smaller than the set value, the second valve body abuts against the inside of the unloading port 160, and the water flow cannot flow out of the unloading port 160, and when the water pressure of the unloading port 160 is larger than the set value, the second valve body 400 is away from the unloading port 160 by the water pressure of the unloading port 160, and the water flow can flow out of the unloading port 160, so that the unloading can be performed more conveniently.

In order to adjust the water inlet cross-sectional area of the valve port 150 for throttling, the constant-flow throttling and unloading multi-purpose valve 10 further includes a feed rod 500 and a third valve core 600, the feed rod 500 is in threaded connection with the valve body 100, one end of the third valve core 600 is elastically abutted in the second channel 140, and the other end of the third valve core 600 can be abutted against the feed rod 500, the feed rod 500 is rotated to move the feed rod 500 in the second channel 140 through the threaded connection with the valve body 100, and the feed rod 500 pushes the third valve core 600 to move, so as to adjust the positional relationship of the third valve core 600 relative to the valve port 150, and further adjust the water inlet cross-sectional area of the valve port 150. In the constant-flow throttling unloading multi-purpose valve 10, when the feed lever 500 is rotated in the forward direction, the feed lever 500 moves towards the valve body 100, the feed lever 500 pushes the third valve element 600 in contact with the feed lever to move towards the valve port 150 in the second channel 140, the third valve element 600 shields the valve port 150, so that the water inlet cross-sectional area of the valve port 150 is reduced, when the feed lever 500 is rotated in the reverse direction, the feed lever 500 moves towards the outside of the valve body 100, the third valve element 600 moves towards the position away from the valve port 150 along with the feed lever 500, and the third valve element 600 moves away from the end surface of the valve port 150, so that the water inlet cross-sectional area of the valve port 150 is increased, so that the water inlet cross-sectional area of the valve port 150 can be accurately.

The valve body 100 has various structural forms, as shown in fig. 1, 2 and 3, and in a preferred embodiment, the valve body 100 includes a cavity 170, a top cover 181, a bottom cover 182 and side covers 190, wherein:

one end of the cavity 170 is open, the top cover 181 is fixed to the cavity 170, a first sealing member 700 is arranged between the top cover 181 and the cavity 170, the first sealing member 700 is arranged on the cavity 170, and the top cover is pressed between the top cover 181 and the cavity 170 when being fixed to the cavity 170, so that the constant-flow throttling unloading multipurpose valve 10 is sealed.

The outer wall of the cavity 170 is formed with the water inlet 110, the water outlet 120, and the unloading port 160 in a protruding manner, and the interior of the cavity 170 is formed with the valve port 150, the first stepped hole 171, the first through hole 172, and the first slot 173. The first stepped hole 171 and the top cover 181 form the first channel 130, a large hole of the first stepped hole 171 opens on a surface of the cavity 170 facing the top cover 181, and a small hole of the first stepped hole 171 is connected with the valve port 150 and the water inlet 110. The axis of the first slot 173 is parallel to the axis of the first step hole 171, the first slot 173 opens on the surface of the cavity 170 facing the top cap 181, the first slot 173 and the top cap 181 form a second channel 140, and the first slot 173 connects the valve port 150, the water outlet 120 and the relief port 160; the first through hole 172 penetrates the cavity 170 between the first slot 173 and the first stepped hole 171, and the first through hole 172 is disposed adjacent to the top cap 181.

The side cover 190 has a first side cover end 191 and a second side cover end 192 opposite to each other along the axial direction of the unloading port 160, the first side cover end 191 is sleeved on the unloading port 160 of the waterway system 20, a second sealing member 800 is arranged between the first side cover end 191 and the unloading port 160 to seal the first side cover end 191 and the unloading port 160, the first side cover end 191 and the unloading port 160 are locked and connected into a whole, and the second side cover end 192 connects the water flow into the water storage tank through a water pipe. The second spool 400 is resiliently coupled within the second side cover end 192.

The bottom cover 182 is provided with a first threaded hole 1821 penetrating the thickness of the bottom cover 182 in a direction parallel to the axial direction of the first slot 173, and preferably, the axis of the first threaded hole 1821 coincides with the axial direction of the first slot 173. The bottom cover 182 is disposed on an end surface of the cavity 170, a third sealing member 900 is disposed between the bottom cover 182 and the cavity 170, and the third sealing member 900 is compressed between the bottom cover 182 and the cavity 170 when the bottom cover 182 and the cavity 170 are fixed as one body. The first threaded hole 1821 is used to be threadedly coupled with the feed bar 500, the feed bar 500 has threads matching the first threaded hole 1821, the feed bar 500 is threadedly coupled to the first threaded hole 1821 such that the feed bar 500 moves along the axis of the first threaded hole 1821 by the threaded action of the external thread 210 and the first threaded hole 1821 when the feed bar 500 is rotated, and the feed bar 500 can abut against the third valve element 600 when the feed bar 500 moves to the third valve element 600 to move the third valve element 600 therewith.

In addition to the valve body 100, the first valve core 300 has various structural forms, and in a preferred embodiment, the first valve core 300 includes a partition plate 310 and a valve rod 320 protruding from the partition plate, the partition plate 310 is embedded in the large hole of the first stepped hole 171, the partition plate 310 is slidable with respect to the large hole of the first stepped hole 171, and the sectional area of the partition plate 310 is equal to or larger than the area of the large hole of the first stepped hole 171 in the direction perpendicular to the axis of the first stepped hole 171, so that the partition plate 310 divides the first passage 130 into the first space 131 and the second space 132. The valve stem 320 is inserted into the small hole of the first stepped hole 171, and the sectional area of the valve stem 320 is smaller than the small hole area of the first stepped hole 171 in the direction perpendicular to the axis of the first stepped hole 171, and the valve stem 320 slides in the small hole of the first stepped hole 171. In the constant-flow throttling unloading multi-purpose valve 10, the valve rod 320 is pushed by the pressure difference to move, the valve rod 320 drives the partition plate 310 fixed to the valve rod 320 to move along with the valve rod, the first elastic member 200 deforms, and meanwhile, water flows among the small holes of the first stepped hole 171, the valve port 150, the second channel 140 and the second space 132, so that the flow rate of the water flow discharged from the valve port 150 and the water outlet 120 is constant when the first valve core is balanced in stress.

The first stepped hole 171 has various structural forms, as shown in fig. 1, fig. 2 and fig. 3, specifically, the small hole of the first stepped hole 171 includes a second slot 1711 and a first groove 1712, the second slot 1711 is coaxial with the large hole of the first stepped hole 171, the second slot 1711 is communicated with the water inlet 110, the first groove 1712 opens to the hole wall of the second slot 1711, the first groove 1712 extends from the hole bottom of the large hole of the first stepped hole 171 to the hole bottom of the second slot 1711, and the first groove 1712 is communicated with the valve port 150.

In the constant-flow throttling unloading multipurpose valve 10, when the water pressure of the water inlet 110 increases, when a pressure difference exists between the first space 131 and the second space 132, water flows into the second slot 1711 through the water inlet 110, and flows into the first groove 1712 from the second slot 1711, a part of water flows between the valve rod 320 and the second slot 1711 through the first groove 1712 to push the valve rod 320 to move towards the second space 132, and the other part of water flows into the large hole of the first stepped hole 171 through the first groove 1712 to push the partition plate 310 towards the second space 132, and through the two parts, the first valve core 300 can be pushed to move conveniently and quickly, so that the pressure balance between the first space 131 and the second space 132 can be realized quickly, the pressure difference can be adjusted quickly and automatically, and the flow of the output end is ensured to be constant. The water pressure at the input end connected with the water inlet is reduced, or the water pressure at the output end connected with the water outlet is increased or reduced, the working principle is similar, and the description is omitted.

In order to facilitate the water flow, as shown in fig. 1, 2 and 3, more specifically, the valve rod 320 includes a first rod portion 321, a second rod portion 322 and a third rod portion 323, the first rod portion 321, the second rod portion 322 and the third rod portion 323 sequentially protrude from the partition plate 310, the cross-sectional areas of the first rod portion 321 and the third rod portion 323 are the same in a direction perpendicular to the axis of the large hole of the first stepped hole 171, the cross-sectional areas of the first rod portion 321 and the third rod portion 323 are the same as the cross-sectional area of the second slotted hole 1711, and the cross-sectional area of the second rod portion 322 is smaller than the cross-sectional area of the first rod portion 321, so as to facilitate the water flow and the.

The first valve element 300 further includes a third slot 330, the third slot 330 opens at an end surface of the partition plate 310 facing away from the valve rod 320, the third slot 330 extends to a certain depth towards the inside of the first rod portion 321, and a first connection hole 210 communicating the third slot 330 and the second channel 140 is formed inside the first elastic member 200; in a specific configuration, the first elastic member 200 may be a spring, a spiral structure of the spring forms the first connection hole 210, and the first elastic member 200 may also be an elastic column, and the elastic column forms the first connection hole 210.

The first valve spool 300 further includes a second stepped hole 340, a large hole of the second stepped hole 340 opens at an end surface of the third rod portion 323 away from the second rod portion 322, and a small hole of the second stepped hole 340 extends to an end of the second rod portion 322 close to the first rod portion 321.

In the constant-flow throttling unloading multi-purpose valve 10, the third slot hole 330 and the second stepped hole 340 reduce the weight of the first valve core 300, so that the free length of the first elastic member 200 is large, and meanwhile, water flows through the first connection hole 210 of the first elastic member 200 and enters the third slot hole 330, so that the third slot hole 330 is filled with water, and the water enters the second stepped hole 340 when flowing between the third rod 323 and the second slot 1711 through the first groove 1712, so that the second stepped hole 340 is filled with water, further improving the free length of the first elastic member 200, making the pressure difference obtained by the formula more accurate, further making the flow rate at the valve port 150 closer to constant, and improving the accuracy of pressure regulation. And the first valve core 300 can be pushed to move conveniently and rapidly, the pressure difference can be adjusted rapidly, and the reaction sensitivity can be improved.

In order to ensure sealability, in a preferred embodiment, as shown in fig. 3 and 4, the first side cap end 191 has a third stepped hole 1911, a large hole of the third stepped hole 1911 opens at an end surface of the first side cap end 191, the third stepped hole 1911 has a third stepped surface 1912, the third stepped surface 1912 is parallel to the end surface of the first side cap end 191, and the second sealing member 800 is disposed on the third stepped surface 1912. When the side cover 190 is rotated or the side cover 190 is inserted until the relief opening 160 abuts against the second sealing member 800, the first side cover end 191 and the relief opening 160 are locked and connected, and at this time, the second valve core 400 abuts against the relief opening 160 just, so that the side cover 190 is limited in the assembling position relative to the relief opening 160, and the gap between the wall of the large hole of the third stepped hole 1911 and the outer wall of the relief opening 160 is sealed.

In order to realize the lock-attaching connection, in a preferred embodiment, the wall of the large hole of the third stepped hole 1911 is provided with an internal thread, and the outer wall of the unloading port 160 is provided with an external thread, which is matched with the internal thread. The first side cover end 191 is sleeved outside the unloading port 160, the side cover 190 is rotated to connect the internal thread and the external thread, the second valve core 400 is abutted against the unloading port 160, so that the constant-flow throttling unloading multi-purpose valve 10 and the unloading port 160 can be locked into a whole conveniently and quickly, and the overall volume of the constant-flow throttling unloading multi-purpose valve 10 connected to the constant-flow throttling unloading multi-purpose valve 10 is small.

In order to ensure the elastic contact of the second spool 400, in a preferred embodiment, as shown in fig. 3 and 4, the constant flow throttling unloading multi-purpose valve 10 further includes a second elastic member 101, the second side cover end 192 has a fourth stepped hole 1913, a large hole of the fourth stepped hole 1913 opens to a third stepped surface 1912, a small hole of the fourth stepped hole 1913 extends to an end surface of the second side cover end 192, the fourth stepped hole 1913 has a fourth stepped surface 1914, the fourth stepped surface 1914 is parallel to the end surface of the first side cover end 191, the second elastic member 101 is located in the large hole of the fourth stepped hole 1913, one end of the second elastic member 101 is fixed to the fourth stepped surface 1914, and the other end is freely movable and fixed to the second spool 400. The elastic direction of the second elastic member 101 is parallel to the axis of the relief port 160 to elastically abut the second spool 400 against the relief port 160. The second elastic member 101 is formed at the inside thereof with a second connection hole 1011 communicating with the side cover 190 so that water flows into the side cover 190 from the unloading port 160, passes through the second elastic member 101 through the second connection hole 1011, and then enters the side cover 190 again to be discharged through the second side cover end 192. In a specific arrangement, the second elastic member 101 may be a spring, a spiral structure of the spring forms a second connection hole 1011, and the second elastic member 101 may be an elastic column, and the elastic column is formed with the second connection hole 1011.

In order to further reduce the overall volume, as shown in fig. 1, 3 and 4, in a preferred embodiment, the end of the relief port 160 has a fifth stepped hole 161, the large hole of the fifth stepped hole 161 opens at the end face of the relief port 160, the second valve spool 400 has a small end 410 and a large end 420 in the axial direction of the relief port 160, the small hole opening area of the fifth stepped hole 161 is larger than the sectional area of the small end 410, and the small hole opening area of the fifth stepped hole 161 is smaller than the sectional area of the large end 420, so that the second valve spool 400 can enter the large hole of the fifth stepped hole 161 and the small end 410 of the second valve spool 400 enters the small hole of the fifth stepped hole 161 when assembled; the large end 420 of the second valve spool 400 is located in the large hole of the fifth stepped hole 161, the small end 410 of the second valve spool 400 can abut against the small hole of the fifth stepped hole 161, the unloading port 160 is closed, and when the water pressure of the unloading port 160 is greater than the elastic force of the second elastic element 101, the small end 410 of the second valve spool 400 can be conveniently withdrawn from the small hole of the fifth stepped hole 161, so that the unloading can be conveniently and quickly performed.

In order to ensure the sealing performance, in a preferred embodiment, as shown in fig. 3 and 4, the third sealing member 900 may be soft rubber and integrally formed with the third valve core 600, one end of the third sealing member 900 is fixed between the bottom cover 182 and the cavity 170, the bottom cover 182 and the cavity 170 press the end of the third sealing member 900 together when the bottom cover 182 and the cavity 170 are fixed, the third sealing member 900 is bent and extended to form the groove 910, and the other end of the third sealing member 900 is integrally formed with the third valve core 600. The third sealing member 900 seals the cavity 170 and the bottom cover 182, the cavity 170 and the third valve element 600 on the one hand, so as to prevent water from overflowing, and at the same time, when the third valve element 600 moves, the second sealing section 320 deforms, so that the third sealing member 900 and the third valve element 600 move together, thereby ensuring the stability and the air tightness of the moving process.

In order to ensure the elastic abutment of the third valve element 600, the constant-flow throttling-unloading multi-purpose valve 10 further includes a third elastic element 102, the third elastic element 102 is disposed inside the second channel 140, and the third elastic element 102 can abut on the surface of the third valve element 600 opposite to the top cover 181, when the feed rod 500 drives the third valve element 600 to move towards the valve body 100, the third elastic element 102 is compressed, and when the feed rod 500 moves towards the outside of the valve body 100, the third elastic element 102 under the third valve element 600 moves with the feed rod 500 under the pushing force of the third elastic element 102. In a specific arrangement, the third elastic member 102 may be a spring, and the third elastic member 102 may also be a cylindrical elastic structure.

In order to facilitate the control of the switch of the constant-flow throttling unloading multi-purpose valve 10, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, in a preferred embodiment, the constant-flow throttling unloading multi-purpose valve 10 further includes a switch module 103, and the switch module 103 includes a housing 1031, and a driving unit 1032 and a top plug 1033 disposed in the housing 1031, wherein:

the water inlet 110 communicates with the first passage 130 through the valve hole 183;

the housing 1031 is fixed to the valve body 100, and the housing 1031 is communicated with the water inlet 110; in specific setting, a sealing ring is arranged between the housing 1031 and the valve body 100, and the housing 1031 and the valve body 100 are fixed into a whole through screws;

the driving unit 1032 is connected with the top plug 1033, the driving unit 1032 is used for driving the top plug 1033 to be inserted into and tightly abut against the valve hole 183, the driving unit 1032 is used for driving the top plug 1033 to leave the valve hole 183, and in a specific arrangement, the driving unit 1032 and the top plug 1033 are provided with an elastic structure 1034 for realizing the recovery of the top plug 1033.

In the constant-flow throttling unloading multipurpose valve 10, when water flows into the water inlet 110, the driving unit 1032 drives the top plug 1033 to be inserted into and tightly abut against the valve hole 183 through the elastic structure 1034, the water path is not conducted, the water flows stay in the water inlet 110, the driving unit 1032 acts and drives the top plug 1033 to move out of the valve hole 183, so that the top plug 1033 is far away from the valve hole 183, the valve hole 183 is opened, the water flows in the water inlet 110 enter the first channel 130 through the valve hole 183, so that the water inlet 110 is communicated with the first channel 130, and therefore, the switch of the constant-flow throttling unloading multipurpose valve 10 can be conveniently controlled by arranging the switch module 103. Specifically, the driving unit 1032 may be a solenoid valve for automatic control. Of course, the driving switch is not limited to the electromagnetic valve, and may be a manual switch or a motor-controlled switch.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A constant-flow throttling unloading multipurpose valve is characterized by comprising:

the feeding rod is in threaded connection with the valve body;

2. The constant-flow throttling unloading multi-purpose valve according to claim 1, wherein the valve body comprises a cavity, a top cover, a bottom cover and a side cover, wherein:

3. The constant-flow throttling unloading multi-purpose valve according to claim 2, wherein the first valve core comprises a partition plate and a valve rod protruding from the partition plate, wherein:

4. The constant-flow throttling and unloading multipurpose valve according to claim 3, wherein the small hole of the first stepped hole comprises a second slotted hole and a first groove, the second slotted hole is coaxial with the large hole of the first stepped hole and is communicated with the opening, the first groove is opened on the hole wall of the second slotted hole and extends from the hole bottom of the large hole of the first stepped hole to the hole bottom of the second slotted hole, and the first groove is communicated with the valve port.

5. The constant-flow throttling unloading multi-purpose valve according to claim 4, wherein the valve rod comprises a first rod part, a second rod part and a third rod part which are sequentially protruded from the partition plate, wherein:

6. The constant-flow throttling unloading multi-purpose valve according to claim 2, characterized by further comprising a second sealing element, wherein the first end is provided with a third stepped hole, a large hole of the third stepped hole is opened at the end surface of the first end, the third stepped hole is provided with a third stepped surface parallel to the end surface of the first end, and the second sealing element is arranged on the third stepped surface; and a first internal thread is arranged on the wall of the large hole of the third stepped hole, and a first external thread matched with the first internal thread is arranged on the outer wall of the unloading port.

7. The constant-flow throttling unloading multi-purpose valve according to claim 2, characterized by further comprising a second elastic member, wherein the second end is provided with a fourth stepped hole, a large hole of the fourth stepped hole opens at the third stepped surface, a small hole of the fourth stepped hole extends to the end surface of the second end, the fourth stepped hole is provided with a fourth stepped surface parallel to the end surface of the first end, the second elastic member is located in a large hole of the fourth stepped hole, one end of the second elastic member is fixed on the fourth stepped surface, the other end of the second elastic member is fixedly connected with a second valve core, the elastic direction of the second elastic member is parallel to the axis of the unloading port, and a second connecting hole communicated with the side cover is formed inside the second elastic member.

8. The constant-flow throttling unloading multi-purpose valve according to claim 2, characterized in that it further comprises a third sealing element, one end of the third sealing element is located between the bottom cover and the cavity, and when the bottom cover is fixed on the cavity, the bottom cover and the cavity jointly press the third sealing element; the third sealing element bends and extends to form a groove, and the other end of the third sealing element and the third valve element are integrally formed.

9. The constant-flow throttling unloading multi-purpose valve according to claim 2, characterized by further comprising a third elastic member, wherein the third elastic member is arranged in the second channel and abuts against the surface of the third valve core opposite to the top cover.

10. The constant-flow throttling unloading multi-purpose valve according to claim 1, wherein a fifth stepped hole is formed in the end portion of the unloading port, a large hole of the fifth stepped hole opens at the end face of the unloading port, the valve core has a small end and a large end along the axial direction of the unloading port, and the small hole opening area of the fifth stepped hole is larger than the sectional area of the small end and smaller than the sectional area of the large end.

11. The constant-flow throttling unloading multi-purpose valve according to claim 1, further comprising a switch module, wherein the switch module comprises a housing, and a driving unit and a top plug arranged in the housing, wherein:

the water inlet is communicated with the first channel through a valve hole;

the shell is fixed on the valve body and communicated with the water inlet;