Adjustable one-way valve

Abstract

The invention belongs to the technical field of valves, and particularly relates to an adjustable one-way valve which comprises a valve body, a mounting cavity is formed in the valve body, an inlet hole and a threaded hole which are communicated with the mounting cavity are formed in the outer wall of the valve body, one end of the inlet hole is an inlet end, an outlet hole is communicated with the mounting cavity, and a valve head and an elastic part are arranged in the mounting cavity; a penetrating hole is formed in the middle of the adjusting screw in a penetrating mode, a compensation groove communicated with the penetrating hole is formed in the peripheral wall of the adjusting screw, the adjusting screw is connected into the threaded hole in a threaded mode and contracts inwards under extrusion of the threaded hole to form outward reset elastic force, and the reset elastic force forces external threads of the adjusting screw to be tightly connected with internal threads of the threaded hole in a threaded mode; when an adjusting person screws the adjusting screw for adjustment, the adjusting force for screwing the adjusting screw is easy to control, the required opening pressure can be quickly adjusted, and the operation efficiency is high; the adjusting screw is difficult to be influenced by the locking screw, the set opening pressure which is adjusted by the adjusting screw previously is difficult to be influenced, and the adjusting efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to an adjustable one-way valve. Background Art

[0002] A one-way valve is a valve that allows fluid to flow only along the inlet, but the medium at the outlet cannot flow back. It is commonly known as a one-way valve. A one-way valve is also called a check valve or a non-return valve. It is used in hydraulic systems to prevent oil from flowing in the opposite direction, or in pneumatic systems to prevent compressed air from flowing in the opposite direction. There are two types of one-way valves: straight-through and right-angle. Straight-through one-way valves are installed on the pipeline with threaded connections. Right-angle one-way valves are available in three types: threaded connection, plate connection, and flange connection.

[0003] For example: China's invention patent publication number CN216590111U discloses a double-safety one-way valve, and its specification paragraph

[0012] records that "the adjusting screw 32 is arranged above the valve stem spring 16, and the adjusting screw 32 is threadedly connected to the valve cap 12. The adjusting screw 32 can move axially to adjust the compression amount of the valve stem spring 16. In a preferred embodiment, a locking screw 34 is also arranged above the adjusting screw 32, and the locking screw 34 is threadedly connected to the valve cap 12. The locking screw 34 can prevent the adjusting screw 32 from loosening."

[0004] As can be seen from the above, the outer thread of the adjusting screw 32 and the inner thread of the valve cap 12 are adapted to be screwed, so that the outer thread of the adjusting screw 32 and the inner thread of the valve cap 12 are loosely matched, so the locking screw 34 is needed to prevent the adjusting screw 32 from loosening. However, in actual operation, after the adjusting screw 32 is adjusted, the locking screw 34 is locked. In the process of locking the locking screw 34, it is difficult for the user to judge whether the locking screw 34 is screwed to the position of abutting the locking screw 34. Then, when the locking screw 34 is screwed in place and then continues to be screwed, the adjusting screw 32 will be driven to rotate with the locking screw 34, causing the adjusting screw 32 to rotate and affect the previously adjusted opening pressure. In addition, the outer thread of the adjusting screw 32 and the inner thread of the valve cap 12 are loosely matched, and the adjusting personnel are not good at grasping the adjusting force of screwing the adjusting screw 32 during adjustment, which requires a high level of proficiency of the adjusting personnel. Even a skilled adjusting personnel needs a long time to adjust to the required opening pressure, and the operation efficiency is low. Summary of the invention

[0005] The purpose of the present invention is to provide an adjustable one-way valve, aiming to solve one of the technical problems existing in the prior art.

[0006] To achieve the above object, an embodiment of the present invention provides an adjustable valve, comprising:

[0007] A valve body, wherein a mounting cavity is arranged in the valve body, an inlet hole and a threaded hole communicating with the mounting cavity are opened on the outer wall of the valve body, an end of the inlet hole close to the mounting cavity is an inlet end, and an outflow hole flows through the mounting cavity; a valve head and an elastic member are arranged in the mounting cavity, and the elastic member has a tendency to drive the valve head to seal the inlet end; when the valve head is away from the inlet end, the inlet hole and the outflow hole are in communication; and

[0008] An adjusting screw, wherein a through hole is penetrated through the middle of the adjusting screw, and a compensation groove connected to the through hole is opened on the peripheral wall of the adjusting screw. The adjusting screw is threaded into the threaded hole and is squeezed inward by the threaded hole to form a restoring elastic force outward, and the restoring elastic force forces the outer thread of the adjusting screw to be tightly threaded with the inner thread of the threaded hole; the adjusting screw is used to adjust the compression amount of the elastic member.

[0009] Optionally, the adjusting screw is a conical adjusting screw, the outer diameter of the smaller end of the conical adjusting screw is less than or equal to the inner diameter of the threaded hole, and the outer diameter of the larger end of the adjusting screw is greater than the inner diameter of the threaded hole.

[0010] Optionally, the slope of the outer peripheral cone surface of the conical adjusting screw is a, and the value of a is 1° to 5°.

[0011] Optionally, the adjustable valve further comprises a locking screw; the locking screw is threadedly connected to the threaded hole and abuts against the adjusting screw.

[0012] Optionally, a cavity wall of the installation cavity close to the entry end is provided with a limit platform, and a sealing ring is embedded in the limit platform. When the valve head is in sealing contact with the sealing ring, the entry end is sealed.

[0013] Optionally, the size of the through hole at one end close to the installation cavity is increased to form a first accommodating groove, a second accommodating groove is provided at the end of the valve head away from the entry end, and the elastic member is a spring and its two ends are respectively inserted into the first accommodating groove and the second accommodating groove.

[0014] Optionally, the end of the valve head close to the entry end is reduced in size to form a groove, a flow gap is formed between the groove and the cavity wall of the installation cavity, and the groove is provided with at least one through hole connected to the second accommodating groove; the through hole is the outflow hole.

[0015] Optionally, the through hole is a hexagonal hole, a square hole, a cross hole or a slotted hole.

[0016] Optionally, the valve body is provided with threaded portions on the outer sides of the inlet hole and the outlet hole.

[0017] Optionally, the outflow hole is arranged on the side wall of the valve body and is connected with the installation cavity, and the inlet hole and the outflow hole are arranged vertically.

[0018] Compared with the prior art, the above one or more technical solutions in the adjustable valve provided in the embodiment of the present invention have at least one of the following technical effects:

[0019] When the adjusting screw is screwed into the threaded hole, the adjusting screw is squeezed by the threaded hole and elastically contracts inwardly. The compensation groove provides an escape position for the elastic contraction of the adjusting screw inwardly, and the elastic contraction of the adjusting screw inwardly forms a restoring elastic force outward. The restoring elastic force forces the outer thread of the adjusting screw to be tightly threaded with the inner thread of the threaded hole. When the adjusting personnel turns the adjusting screw to adjust the compression amount of the elastic part, the adjusting force of turning the adjusting screw is easy to control, and the required opening pressure can be adjusted quickly. The operating efficiency is high and it has extremely high practicality.

[0020] Because the outer thread of the adjusting screw is tightly threaded with the inner thread of the threaded hole, the adjusting screw is not easily affected by the locking screw, that is, it is difficult to be driven to rotate together with the locking screw, and it is not easy to affect the opening pressure set by the previously adjusted adjusting screw, thereby greatly improving the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a cross-sectional view of the adjustable valve according to the first embodiment of the present invention.

[0023] Figure 2 It is a cross-sectional view of the adjusting screw of the present invention.

[0024] Figure 3 It is a front view of the adjusting screw of the present invention.

[0025] Figure 4 It is a cross-sectional view of the adjustable valve according to the second embodiment of the present invention.

[0026] Among them, the reference numerals in the figure are:

[0027] 100, valve body; 110, mounting cavity; 111, limit platform; 112, sealing ring; 120, entry hole; 121, entry end; 130, threaded hole; 140, valve head; 142, second accommodating groove; 143, flow gap; 144, through hole; 150, elastic member; 160, outflow hole; 170, threaded portion; 180, sealing cap; 181, O-ring;

[0028] 200, adjusting screw; 210, perforation; 211, compensation groove; 212, first accommodation groove;

[0029] 300, locking screw; 310, air avoidance hole. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating 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 embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] In one embodiment of the present invention, referring to Figure 1-Figure 4 , an adjustable valve is provided, including a valve body 100 and an adjusting screw 200.

[0035] Among them, refer to Figure 1 and Figure 4 The valve body 100 is provided with a mounting cavity 110, and an inlet hole 120 and a threaded hole 130 are provided on the outer wall of the valve body 100, which are connected to the mounting cavity 110. The end of the inlet hole 120 close to the mounting cavity 110 is an inlet end 121, and an outflow hole 160 flows through the mounting cavity 110. A valve head 140 and an elastic member 150 are provided in the mounting cavity 110, and the elastic member 150 has a tendency to drive the valve head 140 to seal the inlet end 121. When the valve head 140 is away from the inlet end 121, the inlet hole 120 and the outflow hole 160 are in communication.

[0036] Among them, refer to Figure 1-Figure 3 The middle of the adjusting screw 200 is penetrated by a through hole 210, and the peripheral wall of the adjusting screw 200 is provided with a compensation groove 211 connected to the through hole 210. The outer diameter of at least part of the adjusting screw 200 is larger than the inner diameter of the threaded hole 130. The adjusting screw 200 is screwed into the threaded hole 130 and is squeezed by the threaded hole 130 to shrink inward to form an outward return elastic force, which forces the outer thread of the adjusting screw 200 to be tightly screwed with the inner thread of the threaded hole 130. The adjusting screw 200 is used to adjust the compression amount of the elastic member 150, thereby adjusting the opening pressure of the adjustable valve.

[0037] Reference Figure 1 and Figure 4 When in use, fluid (liquid or gas) flows in from the inlet hole 120, the fluid pushes the valve head 140 away from the inlet end 121 and compresses the elastic member 150, so that the inlet end 121 is opened, and the fluid enters the installation cavity 110 from the inlet end 121 and flows out from the outflow hole 160; when the fluid is not output, the elastic force of the elastic member 150 drives the valve head 140 to return to its original position and seal the inlet end 121, so that the inlet end 121 is closed. The fluid can only flow in from the inlet hole 120 and out from the outflow hole 160, and the fluid cannot flow back.

[0038] Compared with the prior art, the above one or more technical solutions in the adjustable valve provided in the embodiment of the present invention have at least one of the following technical effects:

[0039] Reference Figure 1-Figure 3Since the adjusting screw 200 has a compensation groove 211, and at least part of the outer diameter of the adjusting screw 200 is larger than the inner diameter of the threaded hole 130, when the adjusting screw 200 is screwed into the threaded hole 130, the adjusting screw 200 is squeezed by the threaded hole 130 and elastically shrinks inwardly. The compensation groove 211 provides an escape position for the adjusting screw 200 to elastically shrink inwardly, and the adjusting screw 200 elastically shrinks inwardly to form an outward restoring elastic force, which forces the outer thread of the adjusting screw 200 to be tightly screwed with the inner thread of the threaded hole 130. When the adjusting personnel turns the adjusting screw 200 to adjust the compression amount of the elastic member 150, it is easy to control the adjusting force of turning the adjusting screw 200, and the required opening pressure can be adjusted quickly, the operating efficiency is high, and it has extremely high practicality.

[0040] Further, refer to Figure 1 and Figure 2 The adjusting screw 200 is a conical adjusting screw 200, and the outer diameter of the small end of the conical adjusting screw 200 is less than or equal to the inner diameter of the threaded hole 130, so that the small end of the conical adjusting screw 200 can be screwed into the threaded hole 130 conveniently. The outer diameter of the large end of the adjusting screw 200 is larger than the inner diameter of the threaded hole 130. In the process of screwing the adjusting screw 200 into the threaded hole 130, the large end of the adjusting screw 200 will be squeezed by the threaded hole 130 and elastically contract inwardly. The compensation groove 211 provides an escape position for the elastic contraction of the adjusting screw 200 inwardly, and the elastic contraction of the adjusting screw 200 inwardly forms an outward restoring elastic force, which forces the outer thread of the adjusting screw 200 to be tightly screwed with the inner thread of the threaded hole 130.

[0041] Further, refer to Figure 2 The slope of the outer cone surface of the conical adjusting screw 200 is a, and the value of a is 1° to 5°. Preferably, the value of a is 2°, 3° or 4°.

[0042] In another embodiment, referring to Figure 1 The adjustable valve further includes a locking screw 300. The locking screw 300 is screwed to the threaded hole 130 and abuts against the adjusting screw 200. After the adjusting screw 200 is turned to adjust the compression amount of the elastic member 150 to adjust the opening pressure of the adjustable valve to a desired value, the locking screw 300 is screwed to the threaded hole 130 and abuts against the adjusting screw 200 to lock the adjusting screw 200 so that the adjusting screw 200 is firmly screwed into the threaded hole 130. In addition, since the outer thread of the adjusting screw 200 is tightly screwed to the inner thread of the threaded hole 130, the adjusting screw 200 is difficult to be affected by the locking screw, that is, it is difficult to be driven to rotate together by the locking screw, and it is not easy to affect the opening pressure previously adjusted by the adjusting screw 200, which greatly improves the adjustment efficiency.

[0043] In another embodiment, referring to Figure 1 The cavity wall of the installation cavity 110 near the entrance end 121 is provided with a limit platform 111, and the limit platform 111 is embedded with a sealing ring 112. When the valve head 140 is in sealing contact with the sealing ring 112, it is used to seal the entrance end 121. By providing the sealing ring 112, the sealing performance of the valve head 140 sealing the entrance end 121 is improved, and the sealing effect is good.

[0044] In another embodiment, referring to Figure 1 and Figure 2 The size of the through hole 210 at one end close to the installation cavity 110 is increased to form a first accommodating groove 212, and a second accommodating groove 142 is provided at the end of the valve head 140 away from the entry end 121. The elastic member 150 is a spring and its two ends are respectively inserted into the first accommodating groove 212 and the second accommodating groove 142, so that the elastic member 150 is stably installed in the installation cavity 110.

[0045] Further, refer to Figure 1 The end of the valve head 140 close to the inlet end 121 is reduced in size to form a groove, a flow gap 143 is formed between the groove and the cavity wall of the installation cavity 110, and the groove is provided with at least one through hole 144 connected to the second accommodation groove 142. The through hole 210 is an outflow hole 160, and a hole 310 for avoiding the through hole 210 is provided in the middle of the locking screw 300. When the fluid (liquid or gas) flows into the inlet hole 120 and pushes the valve head 140 away from the inlet end 121 to open the inlet end 121, the fluid flows through the flow gap 143, the through hole 144, the second accommodation groove 142, the installation cavity 110, and the first accommodation groove 212 in sequence and flows out from the outflow hole 160. The inlet hole 120 and the outflow hole 160 are arranged in parallel, and the valve is a straight-through type.

[0046] In another embodiment, referring to Figure 4 , the outflow hole 160 is arranged on the side wall of the valve body 100 and communicates with the installation cavity 110, the inlet hole 120 and the outflow hole 160 are arranged vertically, and the valve is a right angle type. Of course, in other embodiments, the inlet hole 120 and the outflow hole 160 are arranged non-vertically or non-parallel, which is not limited here. When the fluid (liquid or gas) flows into the inlet hole 120 and pushes the valve head 140 away from the inlet end 121 to open the inlet end 121, the fluid passes through the installation cavity 110 and flows out from the outflow hole 160.

[0047] Further, refer to Figure 4 The valve body 100 is provided with a detachable sealing cap 180 on the outer side of the outflow hole 160, and an O-type sealing ring 181 is provided between the sealing cap 180 and the outer wall of the valve body 100. The O-type sealing ring 181 is used to seal the gap between the sealing cap 180 and the valve body 100 to prevent fluid leakage. The sealing cap 180 can be connected to the valve body 100 by screwing or clamping.

[0048] Further, refer to Figure 1 and Figure 3 The through hole 210 and the air-avoiding hole 310 are all hexagonal holes, square holes, cross holes or slotted holes, etc., which are convenient for users to use tools (such as screwdrivers) to screw the adjusting screw 200 and the locking screw 300.

[0049] Further, refer to Figure 1 The valve body 100 is provided with a threaded portion 170 on the outer sides of the inlet hole 120 and the outlet hole 160, and the threaded portion 170 can be connected to the threaded sleeve provided on the connecting pipe, so that the valve body 100 is easily installed.

[0050] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0051] The above content is a further detailed description of the present invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims

1. An adjustable valve, characterized in that: include: A valve body (100), wherein a mounting cavity (110) is provided in the valve body (100), and an inlet hole (120) and a threaded hole (130) communicating with the mounting cavity (110) are provided on the outer wall of the valve body (100); an end of the inlet hole (120) close to the mounting cavity (110) is an inlet end (121), and an outflow hole (160) flows through the mounting cavity (110); a valve head (140) and an elastic member (150) are provided in the mounting cavity (110), and the elastic member (150) has a tendency to drive the valve head (140) to seal the inlet end (121); when the valve head (140) is away from the inlet end (121), the inlet hole (120) and the outflow hole (160) are in communication; and An adjusting screw (200) is provided with a through hole (210) in the middle of the adjusting screw (200), a compensation groove (211) communicating with the through hole (210) is provided on the peripheral wall of the adjusting screw (200), the adjusting screw (200) is screwed into the threaded hole (130) and is compressed inwardly by the threaded hole (130) to form an outward restoring elastic force, the restoring elastic force forces the outer thread of the adjusting screw (200) to be tightly screwed with the inner thread of the threaded hole (130); the adjusting screw (200) is used to adjust the compression amount of the elastic member (150).

2. The adjustable valve according to claim 1, characterized in that: The adjusting screw (200) is a conical adjusting screw (200), the outer diameter of the smaller end of the conical adjusting screw (200) is less than or equal to the inner diameter of the threaded hole (130), and the outer diameter of the larger end of the adjusting screw (200) is greater than the inner diameter of the threaded hole (130).

3. The adjustable valve according to claim 2, characterized in that: The slope of the outer peripheral conical surface of the conical adjusting screw (200) is a, and the value of a is 1° to 5°.

4. The adjustable valve according to any one of claims 1 to 3, characterized in that: The adjustable valve further comprises a locking screw (300); the locking screw (300) is threadedly connected to the threaded hole (130) and abuts against the adjusting screw (200).

5. The adjustable valve according to any one of claims 1 to 3, characterized in that: A limiting platform (111) is provided on the cavity wall of the installation cavity (110) close to the entry end (121), and a sealing ring (112) is embedded in the limiting platform (111). When the valve head (140) is in sealing contact with the sealing ring (112), the valve head (140) is used to seal the entry end (121).

6. The adjustable valve according to any one of claims 1 to 3, characterized in that: The size of one end of the through hole (210) close to the installation cavity (110) is increased to form a first accommodating groove (212), and the end of the valve head (140) away from the entry end (121) is provided with a second accommodating groove (142), and the elastic member (150) is a spring and its two ends are respectively inserted into the first accommodating groove (212) and the second accommodating groove (142).

7. The adjustable valve according to claim 6, characterized in that: The valve head (140) has one end near the inlet end (121) that is reduced in size to form a groove, a flow gap (143) is formed between the groove and the cavity wall of the installation cavity (110), and the groove (141) is provided with at least one through hole (144) that is connected to the second accommodating groove (142); the through hole (210) is the outflow hole (160).

8. The adjustable valve according to any one of claims 1 to 3, characterized in that: The through hole (210) is a hexagonal hole, a square hole, a cross hole or a straight hole.

9. The adjustable valve according to any one of claims 1 to 3, characterized in that: The valve body (100) is provided with threaded portions (170) on the outer sides of the inlet hole (120) and the outlet hole (160).

10. The adjustable valve according to any one of claims 1 to 3, characterized in that: The outflow hole (160) is arranged on the side wall of the valve body (100) and is in communication with the installation cavity (110), and the inlet hole (120) and the outflow hole (160) are arranged vertically.

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