WO2022143941A1

WO2022143941A1 - Throttling feed module

Info

Publication number: WO2022143941A1
Application number: PCT/CN2021/143279
Authority: WO
Inventors: 李文明; 杨高
Original assignee: 深圳市恒致云科技有限公司
Priority date: 2020-12-31
Filing date: 2021-12-30
Publication date: 2022-07-07
Also published as: CN112709848A

Abstract

A throttling feed module (10), which is used for throttling a water path system (20). The water path system (20) comprises a valve body (21), a first slotted hole (22) that opens to an end face of the valve body (21), and a water inlet (23) in communication with the first slotted hole (22); the throttling feed module (10) comprises a fixing plate (100), a feed rod (200), an annular sealing member (300), an elastic member (400) and a valve core (500) matching with the water inlet (23); the fixing plate (100) is fixed to the end face of the valve body (21), and has a first threaded hole (110) penetrating through the thickness thereof; one end of the sealing member (300) is fixed between the fixing plate (100) and the valve body (21), and the other end thereof is embedded in the valve core (500); the feed rod (200) has an external thread and is connected to the first threaded hole (110), and can abut against the valve core (500); the valve core (500) is slidably provided in the first slotted hole (22) and is used for adjusting the water inlet cross-section area of the water inlet (23); the elastic member (400) abuts against the surface of the valve core (500) opposite the fixing plate (100) or the first slotted hole (22); and the feed rod (200) rotates to push the valve core (500) to move in the first slotted hole (22), so as to adjust the relative position of the valve core (500) and the water inlet (23), and the water inlet cross-section area of the water inlet (23) can be precisely adjusted.

Description

Throttling feed module

technical field

The invention relates to the technical field of one-way valves, in particular to a throttling feed module.

Background technique

With the continuous improvement of computer technology, automatic control technology and people's quality of life, the intelligent toilet cover with flushing water system and cleaning water system can realize ordinary cleaning and women's cleaning. The advantages of convenience, energy saving and power saving are gradually favored by people.

At present, the flushing water system and the cleaning water system of the smart toilet cover both include a throttling component that can realize the throttling function. The throttling component includes a plastic hose and a valve stem or an air source. The area of the throttling section is used to generate throttling. For example, the area of the throttling section can be changed by clamping or loosening the plastic hose by the valve stem, or by increasing the pressure to compress or reduce the gas pressure to loosen the plastic hose to change the joint. The area of the flow cross section. However, in the existing throttling assembly, the plastic hose will creep due to the long-term extrusion of the valve stem or the air source, so that the area of the throttling section changes when the valve stem or the air source does not act. , resulting in poor throttling stability and affecting product performance. In addition, when the existing throttling component is assembled into the water system, the plastic hose is easily damaged due to its soft material, resulting in a low product yield, and the throttling adjustment process is realized by adjusting the plastic hose through a valve stem or an air source. It is more complicated and the adjustment precision is low.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a throttling feed module for the problem that the throttling effect of the existing throttling assembly is poor.

A throttling feeding module is used for throttling a waterway system, the waterway system comprising a valve body, a first slotted hole opening on the end face of the valve body and a water inlet communicating with the first slotted hole, comprising: A fixed plate, a feed rod, an annular seal, an elastic member and a valve core matched with the water inlet, wherein:

the fixing plate is fixed on the end face of the valve body, and has a first threaded hole penetrating through its thickness;

One end of the seal is fixed between the fixing plate and the valve body, and the other end is embedded in the valve core;

The feed rod has an external thread, is connected to the first threaded hole, and can be abutted against the valve core;

The valve core is slidably arranged in the first slot hole for adjusting the water inlet cross-sectional area of the water inlet;

The elastic member abuts on a surface of the valve core opposite to the fixing plate or the first slot hole.

In the above throttle feed module, the fixed plate is fixed on the valve body, one end of the annular seal is fixed between the fixed plate and the valve body to seal the fixed plate and the valve body, and the other end of the annular seal is embedded in the valve body. Inside the valve core to seal the valve body and valve core to avoid water overflow. The feed rod is inserted into the first threaded hole, and is threadedly connected to the first threaded hole through the external thread. The feed rod is rotated, and the feed rod moves along its axis direction in the first threaded hole through the threaded connection, and rotates in the positive direction. When feeding the rod, the feeding rod moves toward the valve body, and the feeding rod pushes the valve core abutting with it to move toward the bottom of the first slot hole in the first slot hole, the elastic member is deformed, and the valve core blocks the water inlet, In order to reduce the water inlet cross-sectional area of the water inlet, when the feed rod is reversely rotated, the feed rod moves toward the valve body, and the elastic force of the elastic member makes the valve core move towards the bottom of the hole away from the first slot along with the feed rod. The direction of movement, the valve core reduces the range of blocking the water inlet, so that the water inlet cross-sectional area of the water inlet increases. Therefore, by setting the valve body in the waterway system, the first slot hole and the water inlet are formed on the valve body. The relative position of the valve core and the water inlet can adjust the throttling area. Compared with the existing throttling components, the plastic hose is omitted. The above-mentioned throttling feed module can accurately adjust the water inlet cross-sectional area of the water inlet, so as to precisely control Throttle area, and better sealing performance.

In one embodiment, the throttle feed module further includes a knob, the knob cover is provided on the outer side of the feed rod, and a limiting column is formed inside, and the limiting column is provided with a first opening on the end surface of the limiting column. Two slot holes, the end of the feed rod is embedded in the second slot hole, one end of the knob is formed with a first hook, and the fixing plate is formed with a hook matched with the first hook An annular first clamping slot, the first clamping hook is clamped in the first clamping slot, and can rotate around the axis of the feeding rod.

In one embodiment, the fixing plate includes a casing and an upper cover, and the upper cover includes an annular top wall, a side wall and a second hook, wherein:

The casing protrudes outward to form a cover box end, a plurality of second clamping grooves are arranged on the cover box end, and the first threaded holes penetrate through the cover box end;

One end of the side wall is fixedly connected with the top wall, and the other end is fixed with the second hook, the second hook is clamped in the second slot, the top wall, the side The wall and the end face of the cover box end enclose the first card slot.

In one of the embodiments, the seal has a first sealing section, a second sealing section and a third sealing section integrally formed, wherein:

The first sealing segment is located between the casing and the valve body, and when the casing is fixed on the valve body, the casing and the valve body jointly press the first seal part;

The second sealing segment forms a groove, and the groove extends toward a side of the first sealing segment away from the third sealing segment;

The third sealing segment is inserted into the valve core and is fixedly connected with the valve core.

In one embodiment, a baffle plate is provided on the outer side of the feed rod, the baffle plate is arranged on the side of the external thread away from the valve core, and is located on the limiting column and the fixing plate Between the opposite end faces, the projection of the baffle plate on the end face of the limiting column is located outside the second slot hole.

In one embodiment, the valve core includes a cavity with one end open, a third slot is formed on the cavity, and a third hook is formed at one end of the sealing member, and the third hook is embedded In the third slot, a support column is formed inside the cavity, and the feed rod abuts on the support column.

In one embodiment, the support column is provided with a first stepped hole, the large hole of the first stepped hole is opened at the end surface of the support column, the feed rod has an abutting section, the abutting section The segment has a small end and a large end along its axis direction, and the opening area of the small hole of the first stepped hole is larger than the cross-sectional area of the small end and smaller than the cross-sectional area of the large end.

In one embodiment, the first stepped hole has an arc-shaped first stepped surface surrounding the axis of the support column, and the outer surface of the abutting segment has a spherical surface matching the first stepped surface.

In one embodiment, the elastic member is a spring, the side wall of the support column is provided with a connecting hole along the radial direction thereof, the fixing plate is provided with a fourth slot, and the spring is sleeved on the one end of the feeding rod is inserted into the connecting hole, and the other end is embedded in the fourth card slot.

In one embodiment, the sealing member and the valve core are integrally formed.

Description of drawings

1 is a schematic structural diagram of a throttle feed module provided by the present invention;

2 is an exploded schematic diagram of a throttle feed module provided by the present invention;

3 is a partial cross-sectional view of a module formed by a throttle feed module and a waterway system provided by the present invention;

4 is a front view of a throttle feed module provided by the present invention;

FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 4 .

Reference number:

10. Throttle feed module;

100, fixing plate; 110, first threaded hole; 120, second threaded hole; 130, first slot; 140, shell; 141, cover box end; 142, second slot; 143, groove; 150 , upper cover; 151, top wall; 152, side wall; 153, second hook;

200, feed rod; 210, external thread; 220, baffle; 230, abutting section; 231, small end; 232, big end; 233, spherical surface;

300, sealing element; 310, first sealing segment; 320, second sealing segment; 321, groove; 330, third sealing segment; 340, third hook;

400, elastic parts;

500, valve core; 510, cavity; 511, third slot; 520, support column; 521, first stepped hole; 5211, first stepped surface; 522, connecting hole;

600, knob; 610, limit post; 611, second slot; 620, first hook;

20, water system; 21, valve body; 22, the first slot hole; 23, the water inlet; 24, the third threaded hole;

30. Fasteners.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

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

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or an intervening element 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 similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

The technical solutions provided by the embodiments of the present invention are described below with reference to the accompanying drawings.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the present invention provides a throttle feed module 10 , the throttle feed module 10 is used to throttle a waterway system 20 , and the waterway system 20 includes a valve body 21 , The first slotted hole 22 and the water inlet 23, the first slotted hole 22 is opened on the end face of the valve body 21, and extends to a certain depth toward the inside of the valve body 21, and the water inlet 23 is opened at the hole wall of the first slotted hole 22, and toward the The inside of the valve body 21 extends to a certain depth, and the water inlet 23 communicates with the first slot hole 22 . The throttle feed module 10 includes the fixed plate 100, the feed rod 200, the annular seal 300, the elastic member 400 and the valve core 500 matched with the water inlet 23. The valve core 500 is driven by the feed rod 200 in the first A slot hole 22 moves inward to adjust the relative position between the valve core 500 and the water inlet 23, so as to solve the problem of poor throttling effect of the existing throttling assembly. In the throttling feed module 10:

The fixing plate 100 is provided with a first threaded hole 110 , and the first threaded hole 110 penetrates the thickness of the fixing plate 100 along the axis parallel to the first slot hole 22 . The axial directions of a slot hole 22 are coincident. The fixing plate 100 is arranged on the end face of the valve body 21, the fixing plate 100 is provided with a second threaded hole 120, the valve body 21 is provided with a third threaded hole 24, and the fixing plate 100 and the valve body 21 can be fastened Of course, the fixed connection method between the fixing plate 100 and the valve body 21 is not limited to this, and can also be other methods that can meet the connection requirements, such as snap connection, concave-convex fitting, etc.

One end of the sealing member 300 is fixed between the fixing plate 100 and the valve body 21, and the other end of the sealing member 300 is embedded in the valve core 500; in the specific setting, the sealing member 300 may be soft glue, and one end of the sealing member 300 Provided between the fixing plate 100 and the valve body 21, and pressed between the fixing plate 100 and the valve body 21 when the fixing plate 100 and the valve body 21 are fixed by fasteners, the other end of the sealing member 300 is inserted into the valve In the core 500 , and when the valve core 500 is set in the front, the annular surface of the soft rubber is in contact with the valve core 500 .

The feeding rod 200 has an external thread 210, the external thread 210 is matched with the first threaded hole 110, and the feeding rod 200 is connected to the first threaded hole 110 through the threading action of the external thread 210 and the first threaded hole 110, so as to be rotated into the first threaded hole 110. When feeding the rod 200, the thread action of the external thread 210 and the first threaded hole 110 makes the feeding rod 200 move along the axis of the first threaded hole 110, and the feeding rod 200 moves to the valve core 500 when the feeding rod 200 moves. It can be in contact with the valve core 500 to drive the valve core 500 to move with it.

The valve core 500 is slidably arranged in the first slot hole 22, and the valve core 500 is used to adjust the water inlet cross-sectional area of the water inlet 23; In the axial direction of the slotted hole 22, the cross-sectional area of the valve core 500 is equal to the cross-sectional area of the first slotted hole 22, or the cross-sectional area of the valve core 500 is slightly smaller than the cross-sectional area of the first slotted hole 22. The outer surface of the valve core 500 and the inlet The water port 23 is matched, and under the push of the feed rod 200, the valve core 500 is gradually aligned with the water inlet port 23, and the end face of the valve core 500 away from the feed rod 200 moves to the bottom side of the water inlet 23 close to the first slot hole 22. , the valve core 500 completely blocks the water inlet 23 .

The elastic member 400 can abut on the opposite surface of the valve core 500 and the fixing plate 100. When the feed rod 200 drives the valve core 500 to move toward the bottom of the first slot hole 22, the elastic member 400 is stretched, and the elastic member 400 is stretched during feeding. When the rod 200 moves toward the hole bottom away from the first slot hole 22 , the elastic member 400 under the valve core 500 moves along with the feeding rod 200 . Alternatively, the elastic member 400 may abut on the opposite surface of the first slot hole 22. When the feed rod 200 drives the valve core 500 to move toward the bottom of the first slot hole 22, the elastic member 400 is compressed. When the 200 moves toward the hole bottom away from the first slot hole 22 , the valve core 500 moves with the feed rod 200 under the push of the elastic member 400 .

In the above throttle feed module 10, the fixed plate 100 is fixed on the valve body 21, and one end of the annular seal 300 is fixed between the fixed plate 100 and the valve body 21 to seal the fixed plate 100 and the valve body 21, and the annular seal 300 is fixed between the fixed plate 100 and the valve body 21. The other end of the sealing member 300 is embedded in the valve core 500 to seal the valve body 21 and the valve core 500 to prevent the overflow of water flow. The feed rod 200 is inserted into the first threaded hole 110, and is threadedly connected to the first threaded hole 110 through the external thread 210, and the feed rod 200 is rotated to make the feed rod 200 in the first threaded hole 110 along the first threaded hole 110 through the threaded connection. When the feed rod 200 moves in the axial direction, when the feed rod 200 is rotated in the forward direction, the feed rod 200 moves toward the valve body 21 , and the feed rod 200 pushes the valve core 500 abutting against it in the first slot hole 22 toward the first slot hole 22 . The bottom of the hole moves, the elastic member 400 is deformed, and the valve core 500 blocks the water inlet 23, so that the water inlet cross-sectional area of the water inlet 23 is reduced. The elastic force of the elastic member 400 makes the valve core 500 move away from the bottom of the first slot 22 together with the feed rod 200 , and the valve core 500 reduces the range of blocking the water inlet 23 , so that the water intake of the water inlet 23 is reduced. The cross-sectional area is increased. Therefore, the valve body 21 is provided in the water system 20, the first slot hole 22 and the water inlet 23 are formed on the valve body 21, and the throttling area is adjusted by adjusting the relative position of the valve core 500 and the water inlet 23. Compared with the existing throttling assembly, the plastic hose is omitted, and the throttling feeding module 10 can precisely adjust the water inlet cross-sectional area of the water inlet 23, so as to precisely control the throttling area and have better sealing performance.

In order to facilitate throttle adjustment, in a preferred embodiment, as shown in FIG. 1 , FIG. 2 , FIG. 4 and FIG. 5 , the throttle feed module 10 further includes a knob 600 , and the knob 600 is covered on the outside of the feed rod 200 , A limit post 610 is formed inside the knob 600 , the limit post 610 is provided with a second slot hole 611 , the second slot hole 611 is opened on the end face of the limit post 610 , and the end of the feed rod 200 is embedded in the second slot hole In 611, one end of the knob 600 is formed with a first hook 620, the fixing plate 100 is formed with an annular first hook 130, the first hook 130 is matched with the first hook 620, and the first hook 620 is locked in Inside the first locking slot 130 , and the first locking hook 620 can rotate around the axis of the feeding rod 200 in the first locking slot 130 .

In the above throttle feed module 10, when the knob 600 is rotated, the first hook 620 of the knob 600 rotates around the axis of the feed rod 200 in the first slot 130, so that the knob 600 rotates around the axis of the feed rod 200, At the same time, the limit post 610 of the knob 600 rotates around the axis of the feed rod 200 to drive the feed rod 200 embedded in the second slot hole 611 to rotate, so that the rotation of the feed rod 200 can be more conveniently realized, which is convenient for throttling For adjustment, especially when feeding with a large stroke, the knob 600 ensures that the feeding rod 200 is not easy to collide and interfere with other external structures. In the specific setting, the knob 600 can be made of plastic material, and an anti-slip layer and a protruding end are provided on the outside to facilitate the operator to perform the rotation operation.

In order to facilitate the installation of the knob 600 , as shown in FIGS. 1 , 2 , 4 and 5 , specifically, the fixing plate 100 includes a casing 140 and an upper cover 150 , and the upper cover 150 includes an annular top wall 151 and a side wall 152 and the second hook 153, the annular top wall 151, the side wall 152 and the second hook 153 are integrally formed, wherein:

The outside of the casing 140 is provided with a second threaded hole 120 for fixing the casing 140 on the valve body 21 by means of fasteners. The inside of the casing 140 protrudes to form a cover box end 141 , and the cover box end 141 is provided with many A plurality of second clamping slots 142 are provided around the cover box end, and the first threaded hole 110 penetrates through the cover box end. Preferably, the cover box end and the first threaded hole 110 are coaxial.

One end of the side wall 152 is fixedly connected to the top wall 151 , and the other end of the side wall 152 is fixed with a second hook 153 , and the second hook 153 is locked in the second slot 142 to fix the upper cover 150 on the casing On the body 140 , the top wall 151 , the side wall 152 and the end face of the cover box end 141 enclose the first card slot 130 , and the first hook 620 is inserted into the first card slot 130 and can slide in the first card slot 130 .

In the above-mentioned throttle feed module 10, the fasteners are inserted into the second threaded holes 120 and the second threaded holes 120, and are threaded indirectly with the first threaded holes 110 and the second threaded holes 120, so as to fix the housing 140 on the the valve body 21, then insert the knob 600 into the upper cover 150, and the first hook 620 is located between the top wall 151 and the second hook 153, cover the upper cover 150 on the cover box end 141, and put The second hook 153 is inserted into the second slot 142 to fix the upper cover 150 and the casing 140 as a whole. Therefore, the installation of the knob 600 can be easily realized through the above-mentioned upper cover 150 and the housing 140 .

The sealing member 300 has various structural forms. More specifically, as shown in FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , the sealing member 300 has a first sealing section 310 , a second sealing section 320 and a third sealing section that are integrally formed. Seal section 330, wherein:

The first sealing section 310 is provided with a through hole, the first sealing section 310 is located between the housing 140 and the valve body 21, and the fastener passes through the second threaded hole 120, the through hole and the third threaded hole 24 and is connected to the second threaded hole 120, the through hole and the third threaded hole 24. The threaded hole 120 and the third threaded hole 24 are threadedly connected, so that the casing 140 is fixed on the valve body 21. At this time, the casing 140 and the valve body 21 co-extrude the first sealing section 310, so that the casing 140 and the valve The sealing between the bodies 21 is good; or, the casing 140 is provided with a groove 143, the groove 143 is opened on the surface of the casing 140 facing the valve body 21, and the thickness of the first sealing section 310 in a natural state is greater than The depth of the groove 143, the first sealing segment 310 is located in the groove 143, the fastener passes through the second threaded hole 120 and the third threaded hole 24 and is threadedly connected with the second threaded hole 120 and the third threaded hole 24, so as to The casing 140 is fixed on the valve body 21 , and at this time, the valve body 21 squeezes the first sealing segment 310 into the groove 143 .

The second sealing section 320 is bent to form a groove 321, and the groove 321 extends toward the side of the first sealing section 310 away from the third sealing section 330; in the specific setting, the casing 140 and the valve body 21 co-extrude the first sealing section 321. When there is one sealing section 310 , the second sealing section 320 is closely attached to the inside of the casing 140 to reduce the flow of external water into the casing 140 .

One end of the third sealing segment 330 is located on the end face of the valve core 500 , the other end of the third sealing segment 330 is inserted into the valve core 500 , and the third sealing segment 330 is fixedly connected with the valve core 500 .

In the above throttling feed module 10, the first sealing segment 310 is disposed between the fixing plate 100 and the valve body 21, and when the fixing plate 100 and the valve body 21 are fixed by fasteners, the casing 140 and the valve body 21 share the same The first sealing segment 310 is squeezed to seal the fixing plate 100 and the valve body 21 , the second sealing segment 320 is bent to form a groove 321 , and the groove 321 extends toward the side of the first sealing segment 310 away from the third sealing segment 330 , so that the second sealing section 320 is close to the cover box end 141, while the third sealing section 330 is inserted into the valve core 500, and the third sealing section 330 is fixedly connected with the valve core 500 to seal the valve body 21 and the valve core 500, avoiding When the water flow overflows and moves in the first slot hole 22 of the valve core 500 , the second sealing segment 320 is deformed, so that the sealing member 300 and the valve core 500 move together in the first slot hole 22 .

In order to limit the stroke of the feed rod 200 , as shown in FIG. 2 , FIG. 3 and FIG. 5 , in a preferred embodiment, a baffle plate 220 is provided on the outer side of the feed rod 200 , and the baffle plate 220 is arranged on the outer thread 210 away from the valve core. 500 , and the baffle 220 is located between the limiting column 610 and the opposite end surface of the fixing plate 100 , and the projection of the baffle 220 on the end surface of the limiting column 610 is located outside the second slot 611 .

In the above-mentioned throttle feeding module 10, the knob 600 is rotated in the forward direction, and the limit post 610 of the knob 600 rotates around the axis of the feed rod 200, which drives the feed rod 200 embedded in the second slot hole 611 to rotate in the forward direction, In order to move the feed rod 200 toward the valve body 21, the feed rod 200 pushes the valve core 500 abutting with it to move toward the bottom of the first slot hole 22 in the first slot hole 22, and the elastic member 400 is deformed. The valve core 500 shields the water inlet 23, so that the water inlet cross-sectional area of the water inlet 23 is reduced. When the baffle 220 is in contact with the fixed plate 100, the feeding rod 200 cannot continue to move. At this time, the valve core 500 reaches the maximum In the shielding range, the water inlet cross-sectional area of the water inlet 23 is the smallest. When the knob 600 is reversely rotated, the limiting column 610 of the knob 600 rotates around the axis of the feed rod 200, which drives the feed rod 200 embedded in the second slot 611 to rotate in the reverse direction, so that the feed rod 200 moves away from the first A slotted hole 22 moves in the direction of the hole bottom, the feed rod 200 pushes the abutting valve core 500 to move toward the bottom of the first slotted hole 22 in the first slotted hole 22, and the elastic force of the elastic member 400 makes the valve The core 500 moves along with the feed rod 200 in the direction away from the bottom of the first slot hole 22, and the valve core 500 reduces the range of blocking the water inlet 23, so that the cross-sectional area of the water inlet 23 increases. When the 220 is in contact with the end face of the limit post 610, the feed rod 200 cannot continue to move. At this time, the feed rod 200 and the valve core 500 reach the upper limit of the maximum outward movement, and the water inlet cross-sectional area of the water inlet 23 is the largest. Therefore, by providing the baffle plate 220, the strokes of the feed rod 200 and the valve core 500 can be limited, and useless operations and the feed rod 200 being separated from the first threaded hole 110 can be avoided.

In order to facilitate the fixed connection between the valve core 500 and the sealing member 300, as shown in FIG. 2, FIG. 3 and FIG. 5, in a preferred embodiment, the valve core 500 includes a cavity 510 with one end open, and the cavity 510 is provided with a third In the slot 511 , one end of the sealing member 300 forms a third hook 340 , the third hook 340 is embedded in the third slot 511 , a support column 520 is formed inside the cavity 510 , and the feed rod 200 abuts against the support on column 520.

In the above throttling feed module 10, the cavity 510 is provided with the third slot 511, and one end of the sealing member 300 forms the third hook 340, and the third slot 511 and the third hook 340 are snap-fitted , so that the third hook 340 is embedded in the third slot 511 to realize the fixed connection between the valve core 500 and the sealing member 300 . By arranging the support column 520 inside the cavity 510, the feed rod 200 can abut on the support column 520, so as to realize the abutment of the feed rod 200 and the valve core 500 more conveniently, and facilitate the feed rod 200 to push the valve core 500 moves.

In order to facilitate the abutment of the feed rod 200 on the support column 520 , as shown in FIGS. 2 , 3 and 5 , specifically, the support column 520 is provided with a first stepped hole 521 , and the large hole of the first stepped hole 521 is opened at On the end face of the support column 520 , the feed rod 200 has an abutting section 230 , and the abutting section 230 has a small end 231 and a large end 232 along its axis direction, and the opening area of the small hole of the first stepped hole 521 is larger than the cross-sectional area of the small end 231 , and the opening area of the small hole of the first stepped hole 521 is smaller than the cross-sectional area of the large end 232 .

In the above throttle feed module 10, the first stepped hole 521 is provided at the end of the support column 520, and the opening area of the small hole defining the first stepped hole 521 is larger than the cross-sectional area of the small end 231, so that the When the 200 moves toward the inside of the first slot hole 22, it can enter the large hole of the first stepped hole 521, and the small end 231 of the abutting section 230 can enter the small hole of the first stepped hole 521; The opening area of the small hole of the hole 521 is smaller than the cross-sectional area of the large end 232, so that the large end 232 of the abutting section 230 is located in the large hole of the first stepped hole 521, and the small end 231 of the abutting section 230 can abut against the first stepped hole 521. In the small hole of the stepped hole 521 , the feeding rod 200 can be abutted on the support column 520 . And when the elastic member 400 can abut on the opposite surface of the first slot hole 22 , when the feed rod 200 moves toward the bottom of the hole away from the first slot hole 22 , the feed rod 200 still abuts on the support column 520 . , the valve core 500 moves with the feed rod 200 under the push of the elastic member 400 , so that the feed rod 200 moves together with the valve core 500 , ensuring the accuracy of throttle adjustment.

In order to ensure that the feed rod 200 better abuts on the support column 520 , as shown in FIG. 2 , FIG. 3 and FIG. On the stepped surface 5211 , the outer surface of the abutting section 230 has a spherical surface 233 , and the spherical surface 233 matches the first stepped surface 5211 .

In the above-mentioned throttle feed module 10, by defining the first stepped surface 5211 as an arc surface, and the outer surface of the abutting section 230 has a spherical surface 233 matching the first stepped surface 5211, the feed rod 200 abuts against When it is on the support column 520, the spherical surface 233 and the first stepped surface 5211 are in surface contact. The contact with the surface can enable the feed rod 200 to better abut on the support column 520 , thereby improving the stability of the movement of the valve core 500 .

There are various structural forms of the elastic member 400. As shown in FIG. 2, FIG. 3 and FIG. 5, in a preferred embodiment, the elastic member 400 is a spring, and the side wall 152 of the support column 520 is provided with a connecting hole along its radial direction. 522, the fixing plate 100 is provided with a fourth slot, the spring is sleeved on the outside of the feed rod 200, one end of the spring is inserted into the connecting hole 522, and the other end of the spring is embedded in the fourth slot.

In the above throttle feed module 10, one end of the spring is inserted into the connecting hole 522 from the outside of the support column 520, and the other end of the spring is embedded in the fourth slot, so as to connect the valve core 500 to the fixing plate through the spring 100, and the valve core 500 can move together with the valve core 500 under the pulling force of the spring. In the specific setting, the spring can not only be arranged between the fixing plate 100 and the valve core 500, but also can be arranged on the side of the cavity 510 away from the support column 520, and at this time, the spring is connected to the cavity 510 and the first slot hole. 22 on the opposite surface. The elastic member 400 is not limited to a spring, and can also be in the form of other structural rows. For example, the elastic member 400 can be an elastic column.

In order to facilitate preparation and assembly, in a preferred embodiment, the sealing member 300 and the valve core 500 are integrally formed, so that the structure of the throttle feeding module 10 is simple, the assembly process is reduced, and the installation is convenient. In the specific setting, not only the sealing member 300 and the valve core 500 can be integrally formed, but also the valve body 21, the elastic member 400 and the valve core 500 can be integrally formed, and the integral molding process can be injection molding. Of course, the valve body 21 , the elastic member 400 and the valve core 500 can also be of a split structure. The valve body 21 , the elastic member 400 and the valve core 500 are assembled as separate parts after processing, so that the valve body 21 , the elastic member 400 and the valve core 500 can be assembled after a certain part is damaged. The valve body 21 , the elastic member 400 and the valve core 500 can also be integrated into other structural members of the waterway system 20 , instead of being completely discarded.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

A throttling feeding module is used for throttling a waterway system, the waterway system comprising a valve body, a first slotted hole opening on the end face of the valve body and a water inlet communicating with the first slotted hole, the It is characterized in that it includes a fixed plate, a feeding rod, an annular sealing member, an elastic member and a valve core matched with the water inlet, wherein:

the fixing plate is fixed on the end face of the valve body, and has a first threaded hole penetrating through its thickness;

One end of the seal is fixed between the fixing plate and the valve body, and the other end is embedded in the valve core;

The feed rod has an external thread, is connected to the first threaded hole, and can be abutted against the valve core;

The valve core is slidably arranged in the first slot hole for adjusting the water inlet cross-sectional area of the water inlet;

The elastic member abuts on a surface of the valve core opposite to the fixing plate or the first slot hole.
The throttle feed module according to claim 1, further comprising a knob, the knob cover is provided on the outer side of the feed rod, and a limiting column is formed inside, and the limiting column is provided with an opening In the second slot hole on its end face, the end of the feed rod is embedded in the second slot hole, one end of the knob forms a first hook, and the fixing plate is formed with the first hook. A ring-shaped first clamping groove matched with a hook, the first clamping hook is clamped in the first clamping groove, and can rotate around the axis of the feeding rod.
The throttle feed module according to claim 2, wherein the fixing plate comprises a casing and an upper cover, and the upper cover comprises an annular top wall, a side wall and a second hook, wherein:

The casing protrudes outward to form a cover box end, a plurality of second clamping grooves are arranged on the cover box end, and the first threaded holes penetrate through the cover box end;

One end of the side wall is fixedly connected with the top wall, and the other end is fixed with the second hook, the second hook is clamped in the second slot, the top wall, the side The wall and the end face of the cover box end enclose the first card slot.
The throttle feed module of claim 3, wherein the seal has a first seal segment, a second seal segment, and a third seal segment integrally formed, wherein:

The first sealing segment is located between the casing and the valve body, and when the casing is fixed on the valve body, the casing and the valve body jointly press the first seal part;

The second sealing segment forms a groove, and the groove extends toward a side of the first sealing segment away from the third sealing segment;

The third sealing segment is inserted into the valve core and is fixedly connected with the valve core.
The throttle feed module according to claim 2, wherein a baffle plate is provided on the outer side of the feed rod, and the baffle plate is arranged on the side of the outer thread away from the valve core, and is located at the side of the outer thread away from the valve core. The projection of the baffle plate on the end surface of the limiting column is located outside the second slot hole between the limiting column and the opposite end surfaces of the fixing plate.
The throttle feed module according to claim 1, wherein the valve core comprises a cavity with one end open, the cavity is provided with a third clamping groove, and one end of the sealing member forms a third clamping groove The third hook is embedded in the third slot, a support column is formed inside the cavity, and the feed rod abuts on the support column.
The throttle feed module according to claim 6, wherein the support column is provided with a first stepped hole, and the large hole of the first stepped hole is opened on the end surface of the support column, and the feed The rod has an abutment section, the abutment section has a small end and a large end along its axis direction, and the opening area of the small hole of the first stepped hole is larger than the cross-sectional area of the small end and smaller than the cross-sectional area of the large end.
The throttle feed module according to claim 7, wherein the first stepped hole has an arc-shaped first stepped surface surrounding the axis of the support column, and the outer surface of the abutting section has a The spherical surface that matches the first step surface.
The throttle feed module according to claim 6, wherein the elastic member is a spring, the side wall of the support column is provided with a connecting hole along the radial direction thereof, and the fixing plate is provided with a fourth The spring is sleeved on the outer side of the feed rod, one end is inserted into the connecting hole, and the other end is embedded in the fourth card slot.
The throttle feed module according to claim 1, wherein the sealing member and the valve core are integrally formed.