Throttle feed module

Abstract

The present invention relates to a throttling feed module for throttling a water circuit system. The water circuit system includes a valve body, a first slot opening on the end face of the valve body, and a water inlet communicating with the first slot. The throttling feed module includes a fixing plate, a feed rod, an annular seal, an elastic member, and a valve core matching the water inlet. Specifically: The fixing plate is fixed to 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 abut against the valve core; the valve core is slidably arranged in the first slot for adjusting the water inlet cross-sectional area of the water inlet; the elastic member abuts against the surface of the valve core opposite to the fixing plate or the first slot; by rotating the feed rod to push the valve core to move in the first slot, the relative position between the valve core and the water inlet can be adjusted, so as to accurately adjust the water inlet cross-sectional area of the water inlet, thereby precisely controlling the throttling area, and having good sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of one-way valves, and particularly to a throttling feed module. Background Art

[0002] With the continuous improvement of computer technology, automatic control technology, and people's living standards, intelligent toilet covers with a flushing waterway system and a cleaning waterway system that can achieve ordinary cleaning and female cleaning have gradually gained people's favor for their advantages such as intelligent cleaning, cleanliness, preheating comfort, convenient operation, energy saving, and power saving.

[0003] At present, both the flushing waterway system and the cleaning waterway system of intelligent toilet covers include throttling components that can achieve throttling functions. The throttling components include plastic hoses and valve stems or air sources. The throttling components generate throttling by changing the area of the throttling cross-section of the plastic hose. For example, the area of the throttling cross-section is changed by clamping or loosening the plastic hose with a valve stem, or by increasing the pressure to compress or decreasing the gas pressure to relax the plastic hose to change the area of the throttling cross-section. However, in the existing throttling components, the plastic hose will creep due to the long-term extrusion of the valve stem or air source, resulting in a change in the area of the throttling cross-section when the valve stem or air source does not act, causing a problem of poor throttling stability and affecting the product performance. In addition, when the existing throttling components are assembled into the waterway system, the plastic hose is easily damaged due to its soft material, resulting in a low product yield. Moreover, the process of adjusting the throttling by adjusting the plastic hose with a valve stem or air source is relatively cumbersome and the adjustment accuracy is low. Summary of the Invention

[0004] Based on this, in view of the problem of poor throttling effect of the existing throttling components, it is necessary to provide a throttling feed module.

[0005] A throttling feed module is used to throttle a waterway system. The waterway system includes a valve body, a first slot opening on the end face of the valve body, and a water inlet communicating with the first slot. The throttling feed module includes a fixing plate, a feed rod, an annular seal, an elastic member, and a valve core matching the water inlet, wherein:

[0006] The fixing plate is fixed on the end face of the valve body and has a first threaded hole penetrating through its thickness;

[0007] 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;

[0008] The feed rod has an external thread, is connected to the first threaded hole, and can abut against the valve core;

[0009] The valve core is slidably disposed in the first slot for adjusting the water inlet cross-sectional area of the water inlet;

[0010] The elastic member abuts against the surface of the valve core opposite to the fixed plate or the first slot.

[0011] In the above throttle feeding 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. The other end of the annular seal is embedded in the valve core to seal the valve body and the valve core to prevent water from overflowing. The feeding rod is inserted into the first threaded hole and is threadedly connected to the first threaded hole through an external thread. By rotating the feeding rod, the feeding rod moves along its axis direction in the first threaded hole due to the threaded connection. When the feeding rod is rotated forward, the feeding rod moves towards the inside of the valve body. The feeding rod pushes the valve core in contact with it to move towards the bottom of the first slot in the first slot, and the elastic member deforms. The valve core blocks the water inlet, so that the water inlet cross-sectional area of the water inlet is reduced. When the feeding rod is rotated reversely, the feeding rod moves towards the outside of the valve body. The elastic force of the elastic member causes the valve core to move away from the bottom of the first slot together with the feeding rod, and the valve core reduces the range of blocking the water inlet, so that the water inlet cross-sectional area of the water inlet is increased. Therefore, by providing a valve body in the water circuit system, a first slot and a water inlet are formed on the valve body, and the throttle area is adjusted by adjusting the relative position of the valve core and the water inlet. Compared with the existing throttle assembly, the plastic hose is omitted. Through the above throttle feeding module, the water inlet cross-sectional area of the water inlet can be accurately adjusted, so as to precisely control the throttle area, and the sealing performance is better.

[0012] In one embodiment, the throttle feeding module further includes a knob. The knob covers the outside of the feeding rod and has a limiting post formed inside. The limiting post is provided with a second slot opening at its end face. The end of the feeding rod is embedded in the second slot. One end of the knob forms a first hook, and the fixed plate is formed with an annular first slot matching the first hook. The first hook is clamped in the first slot and can rotate around the axis of the feeding rod.

[0013] In one embodiment, the fixed plate includes a housing and an upper cover. The upper cover includes an annular top wall, a side wall and a second hook, where:

[0014] The housing protrudes to form a cover box end. A plurality of second slots are provided on the cover box end, and the first threaded hole penetrates through the cover box end;

[0015] One end of the side wall is fixedly connected to the top wall, and the other end is fixedly provided with the second hook. The second hook is clamped in the second slot. The end faces of the top wall, the side wall and the cover box end enclose the first slot.

[0016] In one embodiment, the seal has an integrally formed first seal section, a second seal section and a third seal section, where:

[0017] The first sealing section is located between the housing and the valve body. When the housing is fixed to the valve body, the housing and the valve body jointly squeeze the first sealing section.

[0018] The second sealing section forms a groove that extends toward the side of the first sealing section away from the third sealing section.

[0019] The third sealing section is inserted into the valve core and is fixedly connected to the valve core.

[0020] In one embodiment, a baffle is provided on the outer side of the feed rod. The baffle is disposed on the side of the external thread away from the valve core and is located between the end faces of the limit post and the fixed plate. The projection of the baffle on the end face of the limit post is located outside the second slot hole.

[0021] In one embodiment, the valve core includes a cavity with an open end. A third card slot is provided on the cavity. One end of the seal forms a third catch, and the third catch is embedded in the third card slot. A support column is formed inside the cavity, and the feed rod abuts against the support column.

[0022] In one embodiment, the support column is provided with a first stepped hole. The large hole of the first stepped hole opens at the end face of the support column. The feed rod has an abutting section, and the abutting section has a small end and a large end along its axial direction. 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.

[0023] In one embodiment, the first stepped hole has an arc-shaped first step surface surrounding the axis of the support column, and the outer surface of the abutting section has a spherical surface matching the first step surface.

[0024] In one embodiment, the elastic member is a spring. A connecting hole is provided on the side wall of the support column along its radial direction. A fourth card slot is provided on the fixed plate. The spring is sleeved on the outer side of the feed rod, with one end inserted into the connecting hole and the other end embedded in the fourth card slot.

[0025] In one embodiment, the seal and the valve core are integrally formed. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a throttling feed module provided by the present invention;

[0027] Figure 2 It is an exploded view of a throttling feed module provided by the present invention;

[0028] Figure 3 Partial cross-sectional view of a module composed of a throttling feed module and a waterway system provided by the present invention;

[0029] Figure 4 Front view of a throttling feed module provided by the present invention;

[0030] Figure 5 is Figure 4 Cross-sectional view taken along line A-A in

[0031] Reference numerals:

[0032] 10. Throttling feed module;

[0033] 100. Fixed plate; 110. First threaded hole; 120. Second threaded hole; 130. First card slot; 140. Housing; 141. Cover box end; 142. Second card slot; 143. Groove; 150. Upper cover; 151. Top wall; 152. Side wall; 153. Second catch;

[0034] 200. Feed rod; 210. External thread; 220. Baffle; 230. Contact section; 231. Small end; 232. Large end; 233. Spherical surface;

[0035] 300. Seal; 310. First seal section; 320. Second seal section; 321. Groove; 330. Third seal section; 340. Third catch;

[0036] 400. Elastic member;

[0037] 500. Valve core; 510. Cavity; 511. Third card slot; 520. Support column; 521. First stepped hole; 5211. First step surface; 522. Connection hole;

[0038] 600. Knob; 610. Limit post; 611. Second slot; 620. First catch;

[0039] 20. Waterway system; 21. Valve body; 22. First slot; 23. Water inlet; 24. Third threaded hole;

[0040] 30. Fastener. Detailed implementation manners

[0041] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand 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.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0043] 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 implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0044] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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 circumstances.

[0045] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0046] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0047] The technical solutions provided by the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0048] As Figure 1 、 Figure 2 and Figure 3 shown, the present invention provides a throttling feed module 10, which is used to throttle a water circuit system 20. The water circuit system 20 includes a valve body 21, a first slot 22 and a water inlet 23. The first slot 22 opens on the end face of the valve body 21 and extends a certain depth into the interior of the valve body 21. The water inlet 23 opens on the hole wall of the first slot 22 and extends a certain depth into the interior of the valve body 21. The water inlet 23 is communicated with the first slot 22. The throttling feed module 10 includes a fixing plate 100, a feed rod 200, an annular seal 300, an elastic member 400 and a valve core 500 matching the water inlet 23. By driving the valve core 500 to move in the first slot 22 through the feed rod 200, the relative position between the valve core 500 and the water inlet 23 is adjusted to solve the problem of poor throttling effect of the existing throttling assembly. In this throttling feed module 10:

[0049] The fixing plate 100 is provided with a first threaded hole 110, which penetrates through the thickness of the fixing plate 100 along the axis direction parallel to the first slot 22. Preferably, the axis of the first threaded hole 110 coincides with the axis direction of the first slot 22. The fixing plate 100 is disposed on the end face of the valve body 21. The fixing plate 100 is provided with a second threaded hole 120, and the valve body 21 is provided with a third threaded hole 24. And the fixing plate 100 and the valve body 21 can be fixed together by fasteners. Of course, the fixed connection manner between the fixing plate 100 and the valve body 21 is not limited to this, and it can also be other ways that can meet the connection requirements, such as snap connection, concave-convex fit, etc.

[0050] One end of the seal 300 is fixed between the fixed plate 100 and the valve body 21, and the other end of the seal 300 is embedded in the valve core 500; specifically, the seal 300 can be made of soft rubber. One end of the seal 300 is arranged between the fixed plate 100 and the valve body 21, and when the fixed plate 100 and the valve body 21 are fixed by fasteners, it is pressed between the fixed plate 100 and the valve body 21. The other end of the seal 300 is inserted into the valve core 500, and when it is arranged in the valve core 500, the annular surface of the soft rubber abuts against the valve core 500.

[0051] The feed rod 200 has an external thread 210, and the external thread 210 matches the first threaded hole 110. The feed rod 200 is connected to the first threaded hole 110 through the threaded action of the external thread 210 and the first threaded hole 110. When the feed rod 200 rotates, the feed rod 200 moves along the axis of the first threaded hole 110 through the threaded action of the external thread 210 and the first threaded hole 110. And when the feed rod 200 moves to the position of the valve core 500, it can abut against the valve core 500 to drive the valve core 500 to move accordingly.

[0052] The valve core 500 is slidably arranged in the first slot 22, and the valve core 500 is used to adjust the cross-sectional area of the water inlet 23; the outer surface of the valve core 500 matches the hole wall of the first slot 22. Along the direction perpendicular to the axis of the first slot 22, the cross-sectional area of the valve core 500 is equal to the cross-sectional area of the first slot 22, or the cross-sectional area of the valve core 500 is slightly smaller than the cross-sectional area of the first slot 22. The outer surface of the valve core 500 matches the water inlet 23. Under the push of the feed rod 200, the valve core 500 gradually blocks the water inlet 23. When the end surface of the valve core 500 away from the feed rod 200 moves to the side of the water inlet 23 close to the bottom of the first slot 22, the valve core 500 completely blocks the water inlet 23.

[0053] The elastic member 400 can abut against the surface of the valve core 500 opposite to the fixed plate 100. When the feed rod 200 drives the valve core 500 to move towards the bottom of the first slot 22, the elastic member 400 is stretched. When the feed rod 200 moves away from the bottom of the first slot 22, the valve core 500 moves with the feed rod 200 under the pull of the elastic member 400. Or, the elastic member 400 can abut against the surface opposite to the first slot 22. When the feed rod 200 drives the valve core 500 to move towards the bottom of the first slot 22, the elastic member 400 is compressed. When the feed rod 200 moves away from the bottom of the first slot 22, the valve core 500 moves with the feed rod 200 under the push of the elastic member 400.

[0054] In the above throttle feed module 10, the fixed plate 100 is fixed on the valve body 21. 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. The other end of the annular seal 300 is embedded in the valve core 500 to seal the valve body 21 and the valve core 500, preventing water from overflowing. 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. By rotating the feed rod 200, the feed rod 200 moves along its axial direction within the first threaded hole 110 due to the threaded connection. When the feed rod 200 is rotated forward, the feed rod 200 moves into the valve body 21. The feed rod 200 pushes the valve core 500 in contact with it to move towards the bottom of the first slot 22 within the first slot 22, causing the elastic member 400 to deform. The valve core 500 blocks the water inlet 23, reducing the cross-sectional area of the water inlet 23. When the feed rod 200 is rotated in the reverse direction, the feed rod 200 moves out of the valve body 21. The elastic force of the elastic member 400 causes the valve core 500 to move away from the bottom of the first slot 22 together with the feed rod 200. The valve core 500 reduces the range of blocking the water inlet 23, increasing the cross-sectional area of the water inlet 23. Therefore, by providing the valve body 21 in the water circuit system 20, forming the first slot 22 and the water inlet 23 on the valve body 21, and adjusting the relative position between the valve core 500 and the water inlet 23 to adjust the throttle area, the plastic hose is omitted compared to the existing throttle assembly. Through the above throttle feed module 10, the cross-sectional area of the water inlet 23 can be accurately adjusted, thereby precisely controlling the throttle area, and the sealing performance is better.

[0055] For the convenience of throttle adjustment, in a preferred embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, the throttle feed module 10 further includes a knob 600. The knob 600 covers the outside of the feed rod 200. A limiting post 610 is formed inside the knob 600. A second slot 611 is opened in the limiting post 610. The second slot 611 opens at the end face of the limiting post 610. The end of the feed rod 200 is embedded in the second slot 611. One end of the knob 600 forms a first hook 620. The fixed plate 100 is formed with an annular first card slot 130. The first card slot 130 cooperates with the first hook 620. The first hook 620 is clamped in the first card slot 130, and the first hook 620 can rotate around the axis of the feed rod 200 within the first card slot 130.

[0056] In the above throttle feed module 10, when the rotary 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, driving the feed rod 200 embedded in the second slot hole 611 to rotate, so as to more conveniently realize the rotation of the feed rod 200 and facilitate throttle adjustment. Especially during large-stroke feeding, the knob 600 ensures that the feed rod 200 is not easily collided with and interfered with by other external structures. When specifically set, 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 rotation operation of the operator.

[0057] For the convenience of installing the knob 600, as Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, specifically, the fixing plate 100 includes a housing 140 and an upper cover 150. The upper cover 150 includes an annular top wall 151, a side wall 152 and a second hook 153. The annular top wall 151, the side wall 152 and the second hook 153 are integrally formed, where:

[0058] A second threaded hole 120 is provided on the outside of the housing 140 for fixing the housing 140 on the valve body 21 through a fastener. A cover box end 141 protrudes inside the housing 140. A plurality of second slots 142 are provided on the cover box end 141. The plurality of second slots 142 are arranged around the cover box end. The first threaded hole 110 penetrates through the cover box end. Preferably, the cover box end and the first threaded hole 110 are coaxial.

[0059] One end of the side wall 152 is fixedly connected to the top wall 151, and a second hook 153 is fixed at the other end of the side wall 152. The second hook 153 is clamped in the second slot 142 to fix the upper cover 150 on the housing 140. The end faces of the top wall 151, the side wall 152 and the cover box end 141 enclose the first slot 130. The first hook 620 is inserted into the first slot 130 and can slide in the first slot 130.

[0060] In the above throttle feed module 10, the fastener is inserted into the second threaded hole 120 and the second threaded hole 120, and is indirectly threaded with the first threaded hole 110 and the second threaded hole 120 to fix the housing 140 on the valve body 21. Then the knob 600 is inserted into the upper cover 150, and the first hook 620 is located between the top wall 151 and the second hook 153. The upper cover 150 is covered on the cover box end 141, and the second hook 153 is inserted into the second slot 142 to fix the upper cover 150 and the housing 140 into one body. Therefore, the knob 600 can be more conveniently installed through the above upper cover 150 and housing 140.

[0061] The structural forms of the seal 300 are diverse. More specifically, as Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the seal 300 has an integrally formed first sealing section 310, a second sealing section 320, and a third sealing section 330, where:

[0062] 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. The fastener passes through the second threaded hole 120, the through hole, and the third threaded hole 24 and is threadedly connected to the second threaded hole 120 and the third threaded hole 24 so that the housing 140 is fixed to the valve body 21. At this time, the housing 140 and the valve body 21 jointly press the first sealing section 310, so that the sealing performance between the housing 140 and the valve body 21 is better; or, the housing 140 is provided with a groove 143, the groove 143 opens on the surface of the housing 140 facing the valve body 21, the thickness of the first sealing section 310 in the natural state is greater than the depth of the groove 143, the first sealing section 310 is located in the groove 143, and the fastener passes through the second threaded hole 120 and the third threaded hole 24 and is threadedly connected to the second threaded hole 120 and the third threaded hole 24 so that the housing 140 is fixed to the valve body 21. At this time, the valve body 21 presses the first sealing section 310 into the groove 143.

[0063] 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 a specific setting, when the housing 140 and the valve body 21 jointly press the first sealing section 310, the second sealing section 320 closely adheres to the inside of the housing 140 to reduce the entry of external water flow into the housing 140.

[0064] One end of the third sealing section 330 is located on the end face of the valve core 500, the other end of the third sealing section 330 is inserted into the valve core 500, and the third sealing section 330 is fixedly connected to the valve core 500.

[0065] In the above throttling feed module 10, the first sealing section 310 is arranged between the fixed plate 100 and the valve body 21. When the fixed plate 100 and the valve body 21 are fixed by fasteners, the housing 140 and the valve body 21 jointly extrude the first sealing section 310 to seal the fixed plate 100 and the valve body 21. 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, so that the second sealing section 320 is close to the cover box end 141. At the same time, the third sealing section 330 is inserted into the valve core 500, and the third sealing section 330 is fixedly connected to the valve core 500 to seal the valve body 21 and the valve core 500 and prevent water from overflowing. At the same time, when moving in the first slot hole 22 of the valve core 500, the second sealing section 320 deforms, so that the seal 300 and the valve core 500 move together in the first slot hole 22.

[0066] To limit the stroke of the feed rod 200, as Figure 2 , Figure 3 and Figure 5 shown, in a preferred embodiment, a baffle 220 is provided on the outer side of the feed rod 200. The baffle 220 is arranged on the side of the external thread 210 away from the valve core 500, and the baffle 220 is located between the opposite end faces of the limit post 610 and the fixed plate 100. The projection of the baffle 220 on the end face of the limit post 610 is located outside the second slot hole 611.

[0067] In the above throttling feed module 10, when the knob 600 is rotated forward, the limit post 610 of the knob 600 rotates around the axis of the feed rod 200, driving the feed rod 200 embedded in the second slot 611 to rotate forward, so that the feed rod 200 moves into the valve body 21, and the feed rod 200 pushes the valve core 500 in contact with it to move towards the bottom of the first slot 22 in the first slot 22. The elastic member 400 deforms, and the valve core 500 blocks the water inlet 23, so that the water inlet cross-sectional area of the water inlet 23 decreases. When the baffle 220 contacts the fixing plate 100, the feed rod 200 cannot move further. At this time, the valve core 500 reaches the maximum blocking range, and the water inlet cross-sectional area of the water inlet 23 is the smallest. When the knob 600 is rotated backward, the limit post 610 of the knob 600 rotates around the axis of the feed rod 200, driving the feed rod 200 embedded in the second slot 611 to rotate backward, so that the feed rod 200 moves in a direction away from the bottom of the first slot 22. The feed rod 200 pushes the valve core 500 in contact with it to move towards the bottom of the first slot 22 in the first slot 22. The elastic force of the elastic member 400 causes the valve core 500 to move away from the bottom of the first slot 22 together with the feed rod 200. The valve core 500 reduces the range of blocking the water inlet 23, so that the water inlet cross-sectional area of the water inlet 23 increases. When the baffle 220 contacts the end face of the limit post 610, the feed rod 200 cannot move further. At this time, the feed rod 200 and the valve core 500 reach the maximum outer movement limit, and the water inlet cross-sectional area of the water inlet 23 is the largest. Therefore, by providing the baffle 220, the strokes of the feed rod 200 and the valve core 500 can be limited, avoiding useless operations and the feed rod 200 disengaging from the first threaded hole 110.

[0068] For the convenience of fixedly connecting the valve core 500 and the seal 300, as Figure 2 , Figure 3 and Figure 5 shown, in a preferred embodiment, the valve core 500 includes a cavity 510 with an open end. A third card slot 511 is provided on the cavity 510. One end of the seal 300 forms a third catch 340, and the third catch 340 is embedded in the third card slot 511. A support post 520 is formed inside the cavity 510, and the feed rod 200 abuts against the support post 520.

[0069] In the above throttling feed module 10, by providing a third card slot 511 on the cavity 510, one end of the seal 300 forms a third catch 340. Through the snap fit of the third card slot 511 and the third catch 340, the third catch 340 is embedded in the third card slot 511 to achieve the fixed connection between the valve core 500 and the seal 300. By providing a support column 520 inside the cavity 510, the feed rod 200 can abut against the support column 520, so as to more conveniently achieve the abutment between the feed rod 200 and the valve core 500, and facilitate the feed rod 200 to push the valve core 500 to move.

[0070] To facilitate the feed rod 200 to abut against the support column 520, as Figure 2 , Figure 3 and Figure 5 shown, specifically, the support column 520 is provided with a first stepped hole 521. The large hole of the first stepped hole 521 opens at the end face of the support column 520. The feed rod 200 has an abutting section 230. The abutting section 230 has a small end 231 and a large end 232 along its axial direction. 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.

[0071] In the above throttling feed module 10, by providing a first stepped hole 521 at the end of the support column 520 and defining that 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, when the feed rod 200 moves towards 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 enters the small hole of the first stepped hole 521; by defining that 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, 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 small hole of the first stepped hole 521, so as to achieve the abutment of the feed rod 200 against the support column 520. And when the elastic member 400 can abut against the opposite surface of the first slot hole 22, when the feed rod 200 moves towards the bottom of the first slot hole 22 away from it, the feed rod 200 still abuts against the support column 520, and the valve core 500 moves with the feed rod 200 under the push of the elastic member 400, so as to facilitate the feed rod 200 to move together with the valve core 500, ensuring the accuracy of throttling adjustment.

[0072] To ensure that the feed rod 200 better abuts against the support column 520, as Figure 2 , Figure 3 and Figure 5As shown, more specifically, the first stepped hole 521 has an arc-shaped first stepped surface 5211 surrounding the axis of the support column 520, and the outer surface of the abutting section 230 has a spherical surface 233, and the spherical surface 233 matches the first stepped surface 5211.

[0073] In the above throttling 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, when the feed rod 200 abuts on the support column 520, there is a surface contact between the spherical surface 233 and the first stepped surface 5211. When the feed rod 200 abuts on the support column 520, it is the abutment of the spherical surface 233 and the first stepped surface 5211. And this surface-to-surface abutment can enable the feed rod 200 to better abut on the support column 520, improving the stability of the movement of the valve core 500.

[0074] The structural form of the elastic member 400 has a variety of types, such as Figure 2 , Figure 3 and Figure 5 As shown, in a preferred embodiment, the elastic member 400 is a spring. A connecting hole 522 is provided on the side wall 152 of the support column 520 along its radial direction. A fourth card slot is provided on the fixing plate 100. The spring is sleeved outside 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 card slot.

[0075] In the above throttling 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 card slot, so as to connect the valve core 500 to the fixing plate 100 through the spring, and the valve core 500 can move together with the valve core 500 under the pulling force of the spring. When specifically arranged, 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. At this time, the spring abuts on the surface of the cavity 510 opposite to the first slot hole 22. The elastic member 400 is not limited to a spring, and can also be of other structural forms. For example, the elastic member 400 can be an elastic column.

[0076] For the convenience of preparation and assembly, in a preferred embodiment, the seal 300 and the valve core 500 are integrally formed, so that the structure of the throttling feed module 10 is simple, the assembly process is reduced, and the installation is facilitated. In specific settings, not only the seal 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 forming 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. After the valve body 21, the elastic member 400 and the valve core 500 are processed as separate parts, they are assembled. In this way, a certain component can be replaced after being damaged without being discarded as a whole. Moreover, the valve body 21, the elastic member 400 and the valve core 500 can also be integrated onto other structural components of the water circuit system 20.

[0077] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0078] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A throttling feed module for throttling a water circuit system, the water circuit system comprising a valve body, a first slot opening at an end face of the valve body, and a water inlet communicating with the first slot, characterized in that, It includes a fixing plate, a feed rod, an annular seal, an elastic member, and a valve core matching the water inlet. The valve core includes a cavity with an opening at one end, and support columns are formed inside the cavity, where: The fixing plate is fixed to 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 abuts against the support column; The valve core is slidably arranged in the first slot for adjusting the water inlet cross-sectional area of the water inlet; The elastic member abuts against the surface of the valve core opposite to the fixing plate or the first slot; Wherein, the seal has an integrally formed first sealing section, a second sealing section, and a third sealing section. The fixing plate includes a housing and an upper cover. The first sealing section is located between the housing and the valve body. When the housing is fixed to the valve body, the housing and the valve body jointly squeeze the first sealing section; the second sealing section forms a groove that extends toward the side of the first sealing section away from the third sealing section; the third sealing section is inserted into the valve core and is fixedly connected to the valve core.

2. The throttling feed module according to claim 1, wherein It further includes a knob. The knob covers the outside of the feed rod and has a limiting post formed inside. The limiting post is provided with a second slot opening at its end face. The end of the feed rod is embedded in the second slot. One end of the knob forms a first hook, and the fixing plate is formed with an annular first card slot matching the first hook. The first hook is clamped in the first card slot and can rotate around the axis of the feed rod.

3. The throttling feed module according to claim 2, wherein The upper cover includes an annular top wall, a side wall, and a second hook, where: The housing protrudes to form a cover box end. A plurality of second card slots are provided on the cover box end, and the first threaded hole penetrates through the cover box end; One end of the side wall is fixedly connected to the top wall, and the other end is fixed with the second hook. The second hook is clamped in the second card slot. The end faces of the top wall, the side wall, and the cover box end enclose the first card slot.

4. The throttling feed module according to claim 2, characterized in that, A baffle is provided on the outside of the feed rod. The baffle is arranged on the side of the external thread away from the valve core and is located between the limiting post and the opposite end face of the fixing plate. The projection of the baffle on the end face of the limiting post is located outside the second slot.

5. The throttling feed module according to claim 1, wherein A third card slot is provided on the cavity. One end of the seal forms a third hook, and the third hook is embedded in the third card slot.

6. The throttling feed module according to claim 5, characterized in that, The support column is provided with a first stepped hole. The large hole of the first stepped hole opens at the end face of the support column. The feed rod has an abutting section. The abutting section has a small end and a large end along its axial direction. 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.

7. The throttling feed module according to claim 6, wherein The first stepped hole has an arc-shaped first step surface surrounding the axis of the support column. The outer surface of the abutting section has a spherical surface matching the first step surface.

8. The throttling feed module according to claim 5, characterized in that The elastic member is a spring. A connection hole is provided on the side wall of the support column along its radial direction. A fourth card slot is provided on the fixed plate. The spring is sleeved outside the feed rod, and one end is inserted into the connection hole, and the other end is embedded in the fourth card slot.

9. The throttling feed module according to claim 1, characterized in that The seal member and the valve core are integrally formed.

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