Valve for adjusting liquid flow
By adopting a differential thread design and guide sleeve structure in the valve, the problem of insufficient flow regulation accuracy in traditional valves is solved, achieving higher flow control accuracy and stability.
Patent Information
- Application Number
- CN202520172552.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-26
AI Technical Summary
Traditional flow control valves have low precision and a limited number of handwheel rotations, resulting in insufficient flow control accuracy.
The differential thread design is adopted, with the pitch of the first thread being greater than that of the second thread. The flow rate is adjusted by rotating the handwheel to drive the screw and piston. Combined with the guide sleeve and spring structure, the piston movement accuracy is improved.
It improves the accuracy of flow control, prevents flow changes caused by accidental handwheel operation, and enhances the stability and precision of flow regulation.
Smart Images
Figure CN223881730U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to valve technical field, concretely relates to a lift valve, especially a valve for adjusting liquid flow. BACKGROUND
[0002] In the flow regulating valve, generally through rotating the hand wheel connected with the screw rod, the diaphragm connected with the screw rod is driven to lift, and then the flow is regulated.
[0003] In the related art, the precision of the conventional flow regulating valve is only controlled by the thread at the connection between the screw rod and the valve body, so that the number of rotations of the hand wheel is only a few, and the precision is low.
[0004] Therefore, how to improve the precision of the valve flow regulation is a technical problem to be solved by the person skilled in the art.
[0005] It should be noted that the above information disclosed in the background section is only used to understand the background of the present application, and therefore, the above description is not considered as the information of the prior art. CONTENT OF THE UTILITY MODEL
[0006] The valve for regulating liquid flow provided by the embodiments of the present disclosure comprises a valve body, a diaphragm, and an adjusting assembly, wherein the valve body is internally provided with a flow passage; the diaphragm is arranged in the valve body; the adjusting assembly comprises a screw rod and a piston, the piston is connected with the diaphragm, the middle part of the screw rod is connected with the valve body through a first thread, and the inner end part of the screw rod is connected with the piston through a second thread; a hand wheel is connected with the outer end part of the screw rod and is adapted to drive the diaphragm to lift through rotation to regulate the liquid flow; and the pitch of the first thread is greater than the pitch of the second thread.
[0007] In an alternative embodiment, the adjusting assembly further comprises a guide sleeve, wherein the valve body is internally provided with a mounting chamber, the diaphragm, the piston, and the guide sleeve are all arranged in the mounting chamber, and the guide sleeve is connected with the valve body to press the diaphragm.
[0008] In an alternative embodiment, the middle part of the piston has a polygonal outer contour; the guide sleeve is axially provided with a guide hole adapted to the piston; the piston is arranged in the guide hole; and the screw rod is adapted to drive the piston to lift along the guide hole through rotation.
[0009] In an alternative embodiment, the mounting chamber is provided with a spring, wherein the spring is located above the piston, one end of the spring abuts against the piston, and the other end of the spring abuts against the inner wall of the mounting chamber.
[0010] In an alternative embodiment, the hand wheel is provided with a plug-in hole in the axial direction, and the hand wheel is slidably arranged on the outer end of the screw rod through the plug-in hole; wherein the side wall of the outer end of the screw rod is provided with a first external gear; the inner wall of the plug-in hole is provided with a first internal gear; the first external gear is arranged in meshing with the first internal gear.
[0011] In an alternative embodiment, the hand wheel is provided with a plug-in ring groove in the axial direction, and the plug-in ring groove is located at the periphery of the plug-in hole; wherein the side wall of the upper end of the valve body is provided with a second external gear; the inner wall of the plug-in ring groove is provided with a second internal gear; the second external gear is arranged in meshing with the second internal gear, and the meshing is disengaged after the hand wheel is moved upward.
[0012] In an alternative embodiment, the outer wall of the plug-in ring groove is provided with an annular protrusion; the side wall of the upper end of the valve body is provided with a pair of annular grooves; the annular protrusion is engaged with the lower annular groove, and is engaged with the upper annular groove after the hand wheel is moved upward.
[0013] The beneficial effects of the utility model are that when the valve for adjusting liquid flow is needed to adjust the flow, the hand wheel is rotated, at this time, the screw rod will rotate with the hand wheel, because the first thread and the second thread are differential threads, the pitch of the first thread is greater than the pitch of the second thread, so when the hand wheel rotates one circle, the rising height of the piston is the pitch difference of the two threads, that is, the moving distance of the piston is small, thereby the precision of flow control can be better improved.
[0014] Other features and advantages of the utility model will be set forth in the subsequent description, and partially become obvious from the description, or be understood by implementing the utility model. The purposes and other advantages of the utility model are realized and obtained in the structure specially pointed out in the description and the drawings.
[0015] In order to make the above purposes, features and advantages of the utility model more obvious and easy to understand, the preferred embodiments are described in detail in the present paper, and the drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0017] Figure 1 A cross-sectional structure schematic diagram of a valve for adjusting liquid flow provided by the embodiments of the present disclosure;
[0018] Figure 2 A structural schematic view of a piston provided for an embodiment of the present disclosure;
[0019] Figure 3 A sectional structural schematic view of a guide sleeve provided for an embodiment of the present disclosure;
[0020] Figure 4 A structural schematic view of a hand wheel provided for an embodiment of the present disclosure;
[0021] Figure 5 A structural schematic view of an annular groove on a valve body provided for an embodiment of the present disclosure.
[0022] In the drawings:
[0023] Valve body 1, flow channel 11, mounting chamber 12, spring 13, second external gear 14, annular groove 15;
[0024] Diaphragm 2;
[0025] Adjusting assembly 3, screw rod 31, first thread 311, second thread 312, first external gear 313, piston 32, guide sleeve 33, guide hole 331;
[0026] Hand wheel 4, plug-in hole 41, first internal gear 411, plug-in ring groove 42, second internal gear 421, annular protrusion 422. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components can be exaggerated or reduced.
[0029] Some embodiments of the present application will be described in detail below in conjunction with the drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0030] As Figure 1As shown, at least one embodiment provides a valve for regulating liquid flow rate, including: valve body 1, diaphragm 2, regulating component 3 and handwheel 4. A flow channel 11 is provided in the valve body 1. The inner end of the regulating component 3 is connected to the diaphragm 2 and the outer end is connected to the handwheel 4. By rotating the handwheel 4, the regulating component 3 drives the diaphragm 2 to rise and fall, thereby regulating the liquid flow rate.
[0031] like Figure 1 As shown, in some embodiments, the diaphragm 2 is disposed inside the valve body 1, with one end extending into the flow channel 11 and the other end connected to the regulating component 3; the diaphragm 2 is raised and lowered by the regulating component 3, thereby adjusting the cross-sectional area of the flow channel 11 to control the flow rate.
[0032] like Figure 1 As shown, in some embodiments, the adjusting component 3 includes a screw 31 and a piston 32. The piston 32 is connected to the diaphragm 2. The outer end of the screw 31 is connected to the handwheel 4. The middle part of the screw 31 is connected to the valve body 1 through a first thread 311. The inner end of the screw 31 is connected to the piston 32 through a second thread 312. The pitch of the first thread 311 is greater than the pitch of the second thread 312.
[0033] In this embodiment, when the flow rate needs to be adjusted, the handwheel 4 is turned. At this time, the screw 31 will rotate with the handwheel 4. Since the first thread 311 and the second thread 312 are differential threads, the pitch of the first thread 311 is greater than the pitch of the second thread 312. Therefore, when the handwheel 4 rotates one revolution, the rising height of the piston 32 is the difference in pitch between the two threads. That is, the moving distance of the piston 32 is small, which can better improve the accuracy of flow control.
[0034] like Figure 1 As shown, in some embodiments, the adjustment component 3 further includes a guide sleeve 33.
[0035] like Figure 2 , Figure 3 As shown, specifically, the outer contour of the middle part of the piston 32 is polygonal; the guide sleeve 33 has a guide hole 331 adapted to the piston 32 along the axial direction; the piston 32 passes through the guide hole 331.
[0036] In this embodiment, during the rotation of the screw 31, the piston 32 will only move axially along the guide hole 331 and will not rotate; and the piston 32 and the diaphragm 2 can be connected by threads.
[0037] like Figure 1 As shown, in some embodiments, the valve body 1 has an installation chamber 12, and the diaphragm 2, piston 32 and guide sleeve 33 are all disposed in the installation chamber 12. The guide sleeve 33 is connected to the valve body 1 to press down the diaphragm 2.
[0038] In this embodiment, the guide sleeve 33 may be connected to the valve body 1 by means of a connector, but is not limited to means of bolts.
[0039] like Figure 1 As shown, in some embodiments, a spring 13 is provided in the mounting chamber 12; wherein the spring 13 is located above the piston 32, and one end of the spring 13 abuts against the piston 32, and the other end abuts against the inner wall of the mounting chamber 12.
[0040] In this embodiment, the function of the spring 13 is to always apply a downward force to the piston 32 to prevent the piston 32 from shaking due to the thread clearance.
[0041] like Figure 4 , Figure 5 As shown, in some embodiments, the handwheel 4 has an axially oriented insertion hole 41, and the handwheel 4 is slidably disposed on the outer end of the screw 31 through the insertion hole 41; wherein the outer end sidewall of the screw 31 is provided with a first external gear 313; the inner wall of the insertion hole 41 is provided with a first internal gear 411; the first external gear 313 and the first internal gear 411 are meshed together.
[0042] In this embodiment, the handwheel 4 engages with the outer end of the screw 31, meaning that the screw 31 can be rotated simply by rotating the handwheel 4.
[0043] In related technologies, handwheel 4 is connected to screw 31. Rotation of handwheel 4 will drive rotation of screw 31, thereby adjusting the flow rate of liquid. However, handwheel 4 is prone to being accidentally activated when no adjustment is needed, resulting in a change in flow rate.
[0044] To solve the above problems, such as Figure 4 , Figure 5 As shown, in some embodiments, the handwheel 4 is provided with an insertion ring groove 42 along the axial direction, and the insertion ring groove 42 is located around the insertion hole 41; wherein the upper end side wall of the valve body 1 is provided with a second external gear 14; the inner wall of the insertion ring groove 42 is provided with a second internal gear 421; the second external gear 14 and the second internal gear 421 are meshed and disengaged after the handwheel 4 moves upward.
[0045] In this embodiment, when it is necessary to adjust the flow rate, the handwheel 4 is pulled upward to disengage from the valve body 1, at which point the handwheel 4 can rotate; when the adjustment is complete, the handwheel 4 is simply pressed down to engage with the valve body 1, at which point the handwheel 4 is locked and will no longer rotate, thus preventing accidental activation.
[0046] like Figure 4 , Figure 5As shown, in some embodiments, the outer wall of the outer ring of the insertion ring groove 42 is provided with an annular protrusion 422; the upper end side wall of the valve body 1 is provided with a pair of annular grooves 15; the annular protrusion 422 is engaged with the lower annular groove 15, and is engaged with the upper annular groove 15 after the hand wheel 4 is moved upward.
[0047] In the present embodiment, when the hand wheel 4 is pulled up and rotated, the annular protrusion 422 of the hand wheel 4 is engaged in the annular groove 15, so that even if the hand wheel 4 is not held, the hand wheel 4 will not fall off.
[0048] At least one embodiment provides a valve hand wheel transmission structure, comprising: a valve body 1; a screw rod 31, which is arranged on the valve body 1 and is threadedly connected with the valve body 1; a hand wheel 4, which is axially provided with an insertion hole 41 and is adapted to be slidably arranged on the outer end of the screw rod 31 through the insertion hole 41; wherein the outer end side wall of the screw rod 31 is provided with a first outer gear 313; the inner wall of the insertion hole 41 is provided with a first inner gear 411; and the first outer gear 313 is meshingly arranged with the first inner gear 411.
[0049] In some embodiments, the hand wheel 4 is axially provided with an insertion ring groove 42, which is located at the periphery of the insertion hole 41; wherein the upper end side wall of the valve body 1 is provided with a second outer gear 14; the inner wall of the insertion ring groove 42 is provided with a second inner gear 421; the second outer gear 14 is meshingly arranged with the second inner gear 421, and is disengaged after the hand wheel 4 is moved upward.
[0050] In some embodiments, the outer wall of the outer ring of the insertion ring groove 42 is provided with an annular protrusion 422; the upper end side wall of the valve body 1 is provided with a pair of annular grooves 15; the annular protrusion 422 is engaged with the lower annular groove 15, and is engaged with the upper annular groove 15 after the hand wheel 4 is moved upward.
[0051] In summary, the valve for adjusting the flow of liquid rotates the hand wheel 4 when the flow needs to be adjusted, at which time the screw rod 31 will rotate with the hand wheel 4. Since the first thread 311 and the second thread 312 are differential threads, the pitch of the first thread 311 is greater than the pitch of the second thread 312, so that when the hand wheel 4 rotates one turn, the rising height of the piston 32 is the difference between the pitches of the two threads, that is, the moving distance of the piston 32 is small, thereby better improving the accuracy of flow control.
[0052] In this document, when it is mentioned that a first component is located on a second component, it can mean that the first component can be directly formed on the second component, or a third component can be interposed between the first component and the second component.
[0053] In this document, when an element or layer is referred to as being "on", "engaged to", "connected to", "attached to" or "coupled to" another element or layer, it can be directly on, engaged, connected, attached or coupled to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on", "directly engaged to", "directly connected to", "directly attached to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., "between" versus "directly between", "adjacent" versus "directly adjacent", etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0054] In this document, example embodiments of the disclosure will be described in greater detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of," when preceding a list of two or more items, modify the entire list of items and do not modify the individual items of the list.
[0055] The terminology used herein is for the purpose of describing particular example configurations only and is not intended to be limiting. As used herein, the singular articles "a," "an," and "the" can be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having," are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order
[0056] As used herein, the phrases "in an embodiment," "according to an embodiment," "in some embodiments," and the like, generally mean the particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of the present disclosure. Thus, appearances of such phrases in various places throughout this specification do not necessarily all refer to the same embodiment. As used herein, the term "example" or "exemplary" means "serving as an example, instance, or illustration." Any implementation, aspect or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects or designs. Rather, the term "example" or "exemplary" is intended to present concepts in a concrete manner.
[0057] In the description of the embodiments of the utility model, unless otherwise clear and definite, the terms "mount", "connect", "connection" should be understood in broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be mechanical connection, also can be electrical connection, it can be direct connection, also can be indirect connection through intermediate medium, it can be the communication inside two elements, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.
[0058] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, terms such as "first", "second" and other numerical terms are used in this document, unless otherwise indicated in this document. Therefore, the first element, component, region, layer or section discussed above can be referred to as the second element, component, region, layer or section without departing from the teachings of the example embodiments.
[0059] Spatially relative terms, such as "inner", "outer", "below", "below", "lower", "upper", "above", and the like, can be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientation depicted in the drawings, the spatially relative terms can be intended to cover different orientations of the device in use or operation. For example, if the device in the drawing is turned over, the element described as "below" or "under" the other element or feature will be oriented "above" the other element or feature. Therefore, the example term "below" can cover the above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.
[0060] In the above discussion, unless otherwise stated, the terms "about", "approximately", "substantially" and the like mean a + / - 10% variation in the value when used to describe numerical values.
[0061] With the above ideal embodiments according to the utility model as inspiration, through the above description, relevant staff can definitely make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.
Claims
1. A valve for regulating the flow of a liquid, characterized in that, The utility model relates to a valve for adjusting liquid flow, comprising: a valve body (1) having a flow channel (11) formed therein; a diaphragm (2) disposed in the valve body (1); an adjusting assembly (3) comprising a screw rod (31) and a piston (32), the piston (32) being connected to the diaphragm (2), the middle part of the screw rod (31) being connected to the valve body (1) through a first thread (311), and the inner end of the screw rod (31) being connected to the piston (32) through a second thread (312); a hand wheel (4) connected to the outer end of the screw rod (31) and adapted to drive the diaphragm (2) to rise and fall by rotating to adjust the liquid flow; wherein the pitch of the first thread (311) is greater than the pitch of the second thread (312).
2. The valve for adjusting liquid flow according to claim 1, wherein the adjusting assembly (3) further comprises a guide sleeve (33); and the valve body (1) has an installation chamber (12) formed therein, and the diaphragm (2), the piston (32) and the guide sleeve (33) are disposed in the installation chamber (12); the guide sleeve (33) is connected to the valve body (1) to press the diaphragm (2).
3. The valve for adjusting liquid flow according to claim 2, wherein the middle part of the piston (32) has a polygonal outer contour; the guide sleeve (33) has a guide hole (331) formed therein and adapted to the piston (32); the piston (32) is disposed in the guide hole (331); and the screw rod (31) is adapted to drive the piston (32) to rise and fall along the guide hole (331) by rotating.
4. The valve for adjusting liquid flow according to claim 3, wherein the installation chamber (12) has a spring (13) disposed therein; and the spring (13) is located above the piston (32), one end of the spring (13) abutting against the piston (32) and the other end abutting against the inner wall of the installation chamber (12).
5. The valve for adjusting liquid flow according to claim 1, wherein the hand wheel (4) has an insertion hole (41) formed therein, and the hand wheel (4) is slidably disposed on the outer end of the screw rod (31) through the insertion hole (41); and the outer end of the screw rod (31) has a first external gear (313) formed on the side wall thereof; the inner wall of the insertion hole (41) has a first internal gear (411) formed thereon; and the first external gear (313) is meshingly disposed with the first internal gear (411).
6. The valve for adjusting liquid flow according to claim 5, wherein the hand wheel (4) has an insertion ring groove (42) formed therein, and the insertion ring groove (42) is located at the periphery of the insertion hole (41); and the upper end of the valve body (1) has a second external gear (14) formed on the side wall thereof; the inner wall of the insertion ring groove (42) has a second internal gear (421) formed thereon; and the second external gear (14) is meshingly disposed with the second internal gear (421), and the meshing is disengaged when the hand wheel (4) is moved upward.
7. The valve for adjusting liquid flow according to claim 6, wherein An annular protrusion (422) is arranged on the inner wall of the outer ring of the plug ring groove (42); A pair of annular grooves (15) are arranged on the side wall of the upper end of the valve body (1); The annular protrusion (422) is engaged with the lower annular groove (15), and is engaged with the upper annular groove (15) after moving up the hand wheel (4).