Valve

Abstract

The utility model provides a valve which comprises a base provided with an inlet, an outlet and a closure channel which communicate with one another. The adjusting assembly extends into the intercepting channel and can rotate and move in the length direction of the intercepting channel; the end, extending into the flow intercepting channel, of the adjusting assembly is provided with a flow intercepting groove, and the flow intercepting groove is used for changing the communication area, at the flow intercepting groove, of the inlet and the outlet when the adjusting assembly rotates in the flow intercepting channel. According to the valve, the adjusting assembly extends into the intercepting channel, the intercepting groove is formed in the end of the adjusting assembly, the communicating area of the inlet and the outlet can be changed when the adjusting assembly rotates, and therefore higher-precision flow control is achieved. The sealing performance and durability of the valve are improved, operation errors are effectively reduced, and the valve is suitable for various high-precision fluid control occasions.

Description

Technical Field

[0001] This application relates to the technical field of valves, and particularly to a valve. Background Art

[0002] A needle valve is a valve used to precisely control the flow rate of a fluid. By adjusting the position of the valve core, the passage area of the fluid passing through the valve is changed, thereby achieving precise control of the flow rate. Needle valves are widely used in fluid control systems in industries such as chemical, pharmaceutical, and food, especially in applications that require high-precision flow control, such as laboratory equipment and precision instruments.

[0003] Currently, common needle valves usually adopt the design of a spiral lift valve core or a sliding valve core. By rotating a handle or an adjusting rod, the position of the valve core is controlled, thereby changing the passage area of the fluid. The designs of these needle valves can achieve a certain degree of flow regulation and are suitable for the control of various fluid media. However, these valves have certain limitations in structure. Especially when controlling high-pressure fluids or viscous liquids, problems such as valve core wear, leakage, and unstable operation are likely to occur. In addition, traditional needle valves also have certain limitations in controlling the flow direction and cannot precisely adjust the flow direction and flow rate of the fluid.

[0004] Although existing needle valves have been applied to a certain extent in flow control, there are still significant deficiencies in flow control accuracy. Due to the wear between the valve core and the valve seat, as well as manual errors during operation, it is difficult to ensure the accuracy of flow regulation, especially in applications involving small flow rates and high-precision requirements. These problems limit the use of needle valves in some high-precision fluid control applications. Therefore, how to improve the flow control accuracy of needle valves, reduce operation errors and wear, has become an important technical problem to be solved currently. Summary of the Utility Model

[0005] In view of this, it is necessary to provide a valve that can accurately control the flow rate to solve the above problems.

[0006] An embodiment of this application provides a valve, including:

[0007] A base, provided with an inlet, an outlet, and a cut-off channel that communicate with each other;

[0008] An adjustment assembly, extending into the cut-off channel and capable of rotating and moving along the length direction of the cut-off channel;

[0009] Wherein, a cut-off groove is provided at the end of the adjustment assembly extending into the cut-off channel, and is used to change the communication area between the inlet and the outlet at the cut-off groove when the adjustment assembly rotates in the cut-off channel.

[0010] In at least one embodiment of the present application, the adjusting assembly includes a valve stem and a handle;

[0011] One end of the valve stem extends into the throttling channel, and the throttling groove is formed at this end. The other end of the valve stem extends out of the base, and the handle is sleeved and fixed on the other end of the valve stem extending into the base.

[0012] In at least one embodiment of the present application, the handle is provided with a first fixing hole along its thickness direction, and a second fixing hole that communicates with the first fixing hole and penetrates the side wall of the handle;

[0013] The valve further includes a fixing member. The valve stem extends into the first fixing hole, and the fixing member can be movably arranged in the second fixing hole along the opening direction of the second fixing hole to lock or loosen the valve stem.

[0014] In at least one embodiment of the present application, the fixing member is threadedly connected to the second fixing hole.

[0015] In at least one embodiment of the present application, the valve stem includes a locking portion, a rotating portion, and a throttling portion that are sequentially arranged in the vertical direction;

[0016] The locking portion is fixed in the handle, the rotating portion is threadedly connected in the throttling channel, the throttling portion extends to the positions of the inlet and the outlet, and the throttling groove is formed on the throttling portion.

[0017] In at least one embodiment of the present application, a gap is formed between the throttling portion and the inner wall of the throttling channel to reduce the friction between the throttling portion and the inner wall of the throttling channel when the throttling portion rotates with the rotating portion.

[0018] In at least one embodiment of the present application, the throttling portion has a fixing surface facing the rotating portion and a throttling surface surrounding its outer wall;

[0019] The throttling groove communicates with the fixing surface to form a fixing port. The rotating portion extends into and is fixed in the throttling groove through the fixing port. The throttling groove communicates with the throttling surface to form a throttling port, so that when the throttling portion rotates with the rotating portion, the throttling port communicates with the inlet and the outlet respectively.

[0020] In at least one embodiment of the present application, the rotating portion includes a spherical portion provided thereon, and the spherical portion extends into the throttling groove.

[0021] In at least one embodiment of the present application, the spherical portion and the intercepting groove surround to form an overflow channel for fluid passage, so that when the intercepting port is respectively communicated with the inlet and the outlet, the fluid can flow out from the inlet to the outlet through the overflow channel.

[0022] In at least one embodiment of the present application, the inlet includes a liquid inlet and a liquid inlet channel, and two ends of the liquid inlet channel are respectively communicated with the liquid inlet and the intercepting channel;

[0023] The outlet includes a liquid outlet and a liquid outlet channel, and two ends of the liquid outlet are respectively communicated with the liquid outlet and the liquid outlet channel;

[0024] Wherein, the liquid inlet channel is arranged obliquely downward from the liquid inlet, and the liquid outlet channel is arranged obliquely upward from the liquid outlet.

[0025] By inserting the adjusting component into the intercepting channel and arranging an intercepting groove at its end, the valve provided above can change the communication area between the inlet and the outlet when the adjusting component rotates, so as to achieve higher-precision flow control. The above not only improves the sealing performance and durability of the valve, but also effectively reduces the operation error, so as to be applicable to various high-precision fluid control occasions. Description of the Drawings

[0026] Figure 1 It is a schematic three-dimensional structure diagram of a valve in an embodiment of the present application.

[0027] Figure 2 is Figure 1 an exploded view of the valve shown.

[0028] Figure 3 is Figure 1 an exploded view of the valve stem shown.

[0029] Figure 4 is Figure 1 a cross-sectional view of the valve shown.

[0030] Description of the Main Element Symbols

[0031] 100, valve; 10, base; 10a, inlet; 101a, liquid inlet; 102a, liquid inlet channel; 10b, outlet; 101b, liquid outlet; 102b, liquid outlet channel; 10c, intercepting channel; 20, adjusting component; 20a, intercepting groove; 21, valve stem; 211, locking portion; 212, rotating portion; 2122, spherical portion; 212a, overflow channel; 213, intercepting portion; 213a, gap; 213b, fixed surface; 213c, intercepting surface; 213d, fixed port; 213e, intercepting port; 22, handle; 22a, first fixing hole; 22b, second fixing hole; 30, fixing member. Detailed Description of the Invention

[0032] The embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0033] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present at the same time. When a component is considered to be "provided on" another component, it can be directly provided on the other component or there may be an intermediate component present at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "rear", and similar expressions used herein are only for the purpose of illustration.

[0034] An embodiment of the present application provides a valve, including:

[0035] A base, provided with an inlet, an outlet, and a throttling channel that communicate with each other;

[0036] A regulating component, extending into the throttling channel and capable of rotating and moving along the length direction of the throttling channel;

[0037] Wherein, a throttling groove is provided at the end of the regulating component extending into the throttling channel, and is used for changing the communication area between the inlet and the outlet at the throttling groove when the regulating component rotates in the throttling channel.

[0038] By extending the regulating component into the throttling channel and providing a throttling groove at its end, the valve provided above can change the communication area between the inlet and the outlet when the regulating component rotates, thereby achieving higher-precision flow control. The above not only improves the sealing performance and durability of the valve, but also effectively reduces the operation error, so as to be applicable to various high-precision fluid control occasions.

[0039] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0040] Please refer to Figures 1-4 , the present application provides a valve 100, including: a base 10, provided with an inlet 10a, an outlet 10b, and a throttling channel 10c that communicate with each other; a regulating component 20, extending into the throttling channel 10c and capable of rotating and moving along the length direction of the throttling channel 10c; wherein, a throttling groove 20a is provided at the end of the regulating component 20 extending into the throttling channel 10c, and is used for changing the communication area between the inlet 10a and the outlet 10b at the throttling groove 20a when the regulating component 20 rotates in the throttling channel 10c.

[0041] The valve 100 provided above can change the communication area between the inlet 10a and the outlet 10b when the adjustment component 20 rotates by extending the adjustment component 20 into the throttling channel 10c and providing a throttling groove 20a at its end, thereby achieving higher-precision flow control. The above not only improves the sealing performance and durability of the valve 100, but also effectively reduces operation errors, so as to be applicable to various high-precision fluid control occasions.

[0042] In a specific embodiment, the base 10 is a tee pipe, and the inlet 10a, the outlet 10b, and the throttling channel 10c are respectively arranged on three channels of the tee pipe.

[0043] Further, the adjustment component 20 includes a valve stem 21 and a handle 22; one end of the valve stem 21 extends into the throttling channel 10c, and the throttling groove 20a is opened at this end, the other end of the valve stem 21 extends out of the base 10, and the handle 22 is sleeved and fixed on the other end of the valve stem 21 extending into the base 10.

[0044] It should be noted that in this solution, one end of the valve stem 21 is extended into the throttling channel 10c, the throttling groove 20a is arranged at the end of the valve stem 21 extending into the throttling on-off, and the handle 22 is sleeved and fixed on the other end of the valve stem 21. Thus, when the staff adjusts the valve 100, by rotating the handle 22, the valve stem 21 is driven to rotate, so that the throttling groove 20a on the valve stem 21 is turned to different directions, thereby changing the communication surface area between the inlet 10a and the outlet 10b, so as to adjust the flow rate of the medium flowing out from the communication area of the throttling groove 20a to control the precision of the valve 100.

[0045] Specifically, in order to ensure the fastening of the handle 22 to the valve stem 21, in a specific embodiment, the handle 22 is provided with a first fixing hole 22a along its thickness direction, and a second fixing hole 22b that communicates with the first fixing hole 22a and penetrates the side wall of the handle 22; the valve 100 further includes a fixing member 30, the valve stem 21 extends into the first fixing hole 22a, and the fixing member 30 can be movably arranged in the second fixing hole 22b along the opening direction of the second fixing hole 22b for locking or loosening the valve stem 21.

[0046] It should be noted that the above solution provides a first fixing hole 22a along the thickness direction of the handle 22 to extend the valve stem 21 into the first fixing hole 22a, and a second fixing hole 22b that penetrates the side wall of the handle 22. When the valve stem 21 and the handle 22 are fixedly connected, by extending the fixing member 30 into and tightening it into the second fixing hole 22b until it abuts against the valve stem 21, the valve plate is clamped in the first fixing hole 22a.

[0047] In a specific embodiment, the fixing member 30 is an inner hexagon screw, and the fixing member 30 is threadedly connected to the second fixing hole 22b. Thus, when the handle 22 and the valve stem 21 are fixed, the inner hexagon screw is tightened into the second fixing hole 22b by a tool, and the fixing member 30 is buried in the second fixing hole 22b without protruding. Thus, on the premise of ensuring the firm fixation of the valve stem 21 and the handle 22, the fixing member 30 is buried in the second fixing hole 22b to prevent the problem that the fixing member 30 protrudes and causes accidental contact by the staff when rotating the handle 22, resulting in hand scratches.

[0048] Further, in order to better arrange the valve stem 21, the valve stem 21 includes a locking portion 211, a rotating portion 212, and a throttling portion 213 arranged in sequence along the vertical direction; the locking portion 211 is fixed in the handle 22, the rotating portion 212 is threadedly connected to the throttling channel 10c, the throttling portion 213 extends into the positions of the inlet 10a and the outlet 10b, and the throttling groove 20a is formed on the throttling portion 213.

[0049] In a specific embodiment, the locking portion 211, the rotating portion 212, and the throttling portion 213 are integrally formed.

[0050] In a specific embodiment, the locking portion 211 is a long bar-shaped structure to facilitate insertion into the first fixing hole 22a. The rotating portion 212 is threadedly connected to the throttling channel 10c to prevent the problem of medium extraction accuracy caused by the valve stem 21 moving in the throttling channel 10c due to high pressure and changing the communication surface area during the application of the valve 100 to the transfer and extraction of high-pressure media.

[0051] Further, in order to extend the service life of the valve 100, in a specific embodiment, a gap 213a is formed between the throttling portion 213 and the inner wall of the throttling channel 10c for reducing the friction between the throttling portion 213 and the inner wall of the throttling channel 10c when the throttling portion 213 rotates with the rotating portion 212.

[0052] Specifically, the width of the throttling portion 213 is smaller than the diameter of the throttling channel 10c. Thus, when the throttling portion 213 is assembled into the throttling channel 10c, the throttling portion 213 and the throttling channel 10c form the above-mentioned gap 213a. Thus, when the rotating portion 212 drives the throttling portion 213 to rotate, the throttling portion 213 is prevented from directly rubbing against the inner wall of the throttling channel 10c to reduce wear, thereby increasing the service life of the valve 100, and preventing the problem of inaccurate flow rate caused by an increase or decrease in the opening due to wear when the medium or fluid flows out through the inlet 10a, the communication surface, and the outlet 10b.

[0053] Specifically, the intercepting part 213 has a fixed surface 213b facing the rotating part 212 and an intercepting surface 213c surrounding its outer wall; the intercepting groove 20a communicates with the fixed surface 213b to form a fixed opening 213d, the rotating part 212 extends into and is fixed in the intercepting groove 20a through the fixed opening 213d, and the intercepting groove 20a communicates with the intercepting surface 213c to form an intercepting opening 213e, which is used for when the intercepting part 213 rotates with the rotating part 212, the intercepting opening 213e communicates with the inlet 10a and the outlet 10b respectively.

[0054] It should be noted that the above-mentioned fixed opening 213d is used for the rotating part 212 to extend into and be fixed. The above-mentioned intercepting opening 213e is the above-mentioned communicating surface. In a specific embodiment, the intercepting opening 213e is substantially an arc surface.

[0055] Furthermore, when the valve 100 is used in the initial state, the intercepting opening 213e is located above the outlet 10b. At this time, the inlet 10a and the outlet 10b are disconnected due to the blocking of the intercepting part 213. Therefore, when a liquid or other medium enters through the inlet 10a, due to the blocking of the intercepting part 213, the valve 100 is in a closed state at this time.

[0056] When it is necessary to connect the valve 100, manually rotate the handle 22 to cause the valve stem 21 to move downward in the intercepting channel 10c and rotate simultaneously. Specifically, the rotating part 212 is connected to the intercepting channel 10c by a trapezoidal thread. Thus, when the handle 22 is manually rotated, the valve stem 21 will rotate and move downward on the trapezoidal thread. Until the valve stem 21 rotates and moves downward until the intercepting opening 213e communicates with both the inlet 10a and the outlet 10b, the valve 100 is opened at this time. And according to the flow rate per unit time to be exported, gradually rotate the valve stem 21 until the area of the intercepting opening 213e communicating with the inlet 10a and the outlet 10b reaches the specified area, so as to accurately control the flow rate per unit time exported.

[0057] Furthermore, the rotating part 212 includes a spherical part 2122 provided thereon, and the spherical part 2122 extends into the intercepting groove 20a.

[0058] It should be noted that by providing the spherical part 2122 in the intercepting groove 20a, when high-pressure liquid impacts from the inlet 10a to the outlet 10b, the high-pressure liquid first impacts on the spherical part 2122, thus avoiding the problem of damage to the intercepting groove 20a caused by the impact force.

[0059] Specifically, the spherical portion 2122 and the flow - intercepting groove 20a enclose a flow - through channel 212a for fluid passage. When the flow - intercepting port 213e is respectively communicated with the inlet 10a and the outlet 10b, fluid can flow out from the inlet 10a to the outlet 10b through the flow - through channel.

[0060] It should be noted that when the spherical portion 2122 is arranged in the flow - intercepting groove 20a to block high - pressure fluid and prevent the direct impact of high - pressure liquid in the flow - intercepting groove 20a from causing damage, since the spherical portion 2122 will block the high - pressure fluid, resulting in the problem that the valve 100 is not connected. In this application, when the spherical portion 2122 is arranged in the flow - intercepting groove 20a, the spherical portion 2122 and the flow - intercepting groove 20a enclose to form a flow - through channel 212a to facilitate the flow of fluid and avoid the problem caused by the non - connection of the valve 100.

[0061] In a specific embodiment, the volume of the spherical portion 2122 in the flow - intercepting groove 20a ranges from a hemisphere to a whole sphere, that is, the bottom surface of the spherical portion 2122 is a plane, thus reserving a space for fluid passage, namely the above - mentioned flow - through channel 212a.

[0062] Furthermore, the inlet 10a includes a liquid inlet 101a and a liquid inlet channel 102a. The two ends of the liquid inlet channel 102a are respectively communicated with the liquid inlet 101a and the flow - intercepting channel 10c; the outlet 10b includes a liquid outlet 101b and a liquid outlet channel 102b. The liquid outlet is respectively communicated with the liquid outlet 101b and the liquid outlet channel 102b at both ends; wherein, the liquid inlet channel 102a is inclined downward from the liquid inlet 101a, and the liquid outlet channel 102b is inclined upward from the liquid outlet 101b.

[0063] It should be noted that by making the liquid inlet channel 102a inclined downward from the liquid inlet 101a, it is convenient for the liquid entering from the liquid inlet 101a to flow downward along its inclined surface under the action of gravity. By making the liquid outlet channel 102b inclined upward from the liquid outlet 101b, that is, the flow - intercepting port 213e is higher than the liquid outlet 101b, when discharging liquid, the liquid can flow out of the outlet 10b through the liquid outlet channel 102b under the action of gravity.

[0064] The valve 100 provided above can change the communication area between the inlet 10a and the outlet 10b when the adjusting assembly 20 rotates by extending the adjusting assembly 20 into the flow - intercepting channel 10c and arranging a flow - intercepting groove 20a at its end, thereby achieving a higher - precision flow control. The above not only improves the sealing performance and durability of the valve 100, but also effectively reduces the operation error, so as to be applicable to various high - precision fluid control occasions.

[0065] The above are only the embodiments of the present application. It should be noted here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present application, but these all fall within the protection scope of the present application.

Claims

1. A valve, characterized in that: include: The base is provided with an inlet, an outlet and a flow interception channel which are interconnected; An adjusting component extends into the intercepting channel and is capable of rotating and moving along the length direction of the intercepting channel; Wherein, an intercepting groove is provided at the end of the regulating component extending into the intercepting channel, which is used to change the connecting area between the inlet and the outlet at the intercepting groove when the regulating component rotates in the intercepting channel.

2. The valve according to claim 1, characterized in that: The regulating assembly includes a valve stem and a handle; One end of the valve stem extends into the intercepting channel, and the intercepting groove is opened at the end, the other end of the valve stem extends out of the base, and the handle sleeve is fixed to the other end of the valve stem extending into the base.

3. The valve according to claim 2, characterized in that: The handle is provided with a first fixing hole along the thickness direction thereof, and a second fixing hole communicating with the first fixing hole and penetrating the side wall of the handle; The valve further comprises a fixing member, the valve stem extends into the first fixing hole, and the fixing member can be moved along the opening direction of the second fixing hole and is arranged in the second fixing hole for locking or loosening the valve stem.

4. The valve according to claim 3, characterized in that: The fixing member is threadedly connected in the second fixing hole.

5. The valve according to claim 2, characterized in that: The valve stem comprises a locking portion, a rotating portion and a flow-cutting portion which are arranged in sequence along the vertical direction; The locking part is fixed in the handle, the rotating part is threadedly connected in the intercepting channel, the intercepting part extends to the inlet and outlet positions, and the intercepting groove is opened on the intercepting part.

6. The valve according to claim 5, characterized in that A gap is formed between the intercepting portion and the inner wall of the intercepting channel, so as to reduce the friction between the intercepting portion and the inner wall of the intercepting channel when the intercepting portion rotates with the rotating portion.

7. The valve according to claim 5, characterized in that The intercepting portion has a fixed surface facing the rotating portion and an intercepting surface surrounding the outer wall thereof; The intercepting groove is connected to the fixed surface to form a fixed port, the rotating part extends into and is fixed in the intercepting groove through the fixed port, and the intercepting groove is connected to the intercepting surface to form an intercepting port, which is used for the intercepting port to be connected to the inlet and the outlet respectively when the intercepting part rotates with the rotating part.

8. The valve according to claim 7, characterized in that The rotating part includes a ball part arranged thereon, and the ball part extends into the intercepting groove.

9. The valve according to claim 8, characterized in that The ball portion and the intercepting groove are arranged to form a flow passage for passing the flow, so that when the intercepting port is connected with the inlet and the outlet respectively, the fluid can flow out from the inlet to the outlet through the flow passage.

10. The valve according to claim 1, characterized in that The inlet comprises a liquid inlet and a liquid inlet channel, and two ends of the liquid inlet channel are respectively connected to the liquid inlet and the intercepting channel; The outlet comprises a liquid outlet and a liquid outlet channel, and the liquid outlet is connected to the liquid outlet and the liquid outlet channel through two ends respectively; Wherein, the liquid inlet channel is arranged obliquely downward from the liquid inlet, and the liquid outlet channel is arranged obliquely upward from the liquid outlet.

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