A mechanical control motion mechanism and a valve having the same

Abstract

The present invention provides a mechanically controlled motion mechanism and a valve having the same, wherein the mechanical motion control mechanism is applied to the valve, specifically including a motion component and a motion track, wherein the displacement of the motion component at the end of the motion track presents an increasing trend of the Fibonacci sequence. The mechanically controlled motion mechanism provided by the present invention is used in the valve to extend the motion path of the valve before the valve is completely closed, extend the high-speed water flow between the valve disc and the valve seat, reduce the pressure on the valve, and carry away impurities through the impact of the high-speed water flow, thereby realizing the self-cleaning function of the valve, maintaining the clean state of the sealing surface between the valve disc and the valve seat, effectively avoiding the accumulation of impurities in the valve, fundamentally solving the problem of the valve not being tightly closed and difficult to open, improving the performance of the valve, and extending the service life of the valve.

Description

Technical Field

[0001] The present invention relates to the technical field of valve manufacturing, and in particular to a mechanical control motion mechanism and a valve having the same. Background Art

[0002] Valves are widely used in various fluid movement occasions, such as controlling the direction of water flow, cutting off water flow, diverting, controlling flow, etc. Its main function is to prevent the medium from flowing back at the pump outlet, prevent the pump and drive motor from reversing, etc., which plays an important role in the safe and stable operation of the equipment. Therefore, ensuring the safe operation and maintenance of valves is of great significance to the operating unit.

[0003] In the cooling water system of the steel industry, due to the direct contact between cooling water and equipment, impurities such as iron oxide particles, metal dust and lubricating grease on the surface of the equipment are brought into the turbid water, resulting in a lot of impurities in the turbid water, especially the turbid water discharged from furnace steelmaking and rolling workshops.

[0004] Since turbid water contains various impurities, and the density and weight of turbid water itself are higher than those of ordinary water, it will clog, wear and wash the sealing surface of the valve, which is easy to cause impurities to remain and accumulate in the valve, resulting in increased pipe resistance inside the valve, affecting the performance of the valve and reducing the service life of the valve. Especially in the last 10% of the process of valve closing, due to the increase in resistance caused by valve closing, the kinetic energy of turbid water is rapidly reduced and converted into turbid water potential energy, pressing the impurities in the turbid water tightly on the sealing surface between the valve disc and the valve seat, resulting in an uneven sealing surface, or even damage to the sealing surface, causing the valve to open and close loosely, and the attachment of impurities in the turbid water to the valve disc can only be cleaned during disassembly and maintenance, which is very inconvenient for continuous operation.

[0005] Therefore, how to reduce the pressure on the valve, reduce the accumulation of impurities in the valve, slow down the damage to the valve sealing surface, improve the performance of the valve, and extend the service life of the valve during the final process of valve closing is an urgent problem that needs to be solved. Summary of the invention

[0006] The object of the present invention is to provide a mechanically controlled motion mechanism and a valve having the same, so as to solve the defects and shortcomings in the prior art. The mechanically controlled motion mechanism provided by the present invention is specifically applied to valves, which can extend the motion path of the valve before the valve is completely closed, extend the high-speed water flow between the valve disc and the valve seat, reduce the pressure on the valve, and can also carry away impurities through the impact of high-speed water flow, thereby realizing the self-cleaning function of the valve, keeping the sealing surface between the valve disc and the valve seat clean, effectively avoiding the accumulation of impurities in the valve, and fundamentally solving the problem of the valve not being tightly closed and difficult to open, thereby improving the performance of the valve and extending the service life of the valve.

[0007] To achieve the above objectives, in a first aspect, the present invention provides a mechanically controlled motion mechanism applied to a valve, wherein the mechanically controlled motion mechanism comprises a moving component and a moving track, wherein the displacement of the moving component at the end of the moving track presents an increasing trend of the Fibonacci series.

[0008] Optionally, the moving component is an operating rod, the end of the operating rod is provided with an external thread with a pitch increasing in a Fibonacci sequence, and the moving track is provided with an internal thread matching the internal thread.

[0009] Optionally, the length of the external thread segments on the operating rod whose spacing increases in a Fibonacci sequence accounts for 10% to 20% of the total length of the operating rod.

[0010] Optionally, the operating rod is made of stainless steel.

[0011] Optionally, the moving component is a slider, the moving track is a slide rail adapted to the slider, and the end of the slide rail is a spiral curve with increasing Fibonacci numbers.

[0012] Optionally, the total length of the spiral curve on the slide rail accounts for 10% to 20% of the total length of the slide rail.

[0013] Optionally, the mechanically controlled motion mechanism further includes a control member, and the control member is used to control the motion component to move along the motion track.

[0014] Optionally, the control component is a handwheel, and the handwheel is fixedly mounted on the upper end of the moving component.

[0015] In a second aspect, the present invention provides a valve, comprising a hollow valve seat, a valve flap, and the mechanically controlled motion mechanism as described in the first aspect, wherein a water inlet channel and a water outlet channel are arranged inside the valve seat, a flow port is arranged between the water inlet channel and the water outlet channel, and the flow port is arranged below the mechanically controlled motion mechanism, and the mechanically controlled motion mechanism is fixedly connected to the valve flap for driving the valve flap to move so as to control the degree of opening or closing of the flow port.

[0016] Compared with the prior art, the mechanical motion control mechanism and the valve having the same provided by the present invention have the following advantages: the mechanical motion control mechanism is applied to the valve, specifically including a moving part and a moving track, and the displacement of the moving part at the end of the moving track presents an increasing trend of the Fibonacci series. The use of the mechanical control motion mechanism provided by the present invention in the valve can extend the motion path of the valve before the valve is completely closed, extend the high-speed water flow between the valve disc and the valve seat, reduce the pressure on the valve, and carry away impurities through the impact of the high-speed water flow, thereby realizing the self-cleaning function of the valve, maintaining the clean state of the sealing surface between the valve disc and the valve seat, and effectively avoiding the accumulation of impurities in the valve, fundamentally solving the problem of the valve not being tightly closed and difficult to open, improving the performance of the valve, and extending the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 work.

[0018] Figure 1 It is a structural schematic diagram of a valve provided by one embodiment of the present invention;

[0019] Description of reference numerals:

[0020] 1-valve seat; 2-valve disc; 3-operating lever; 4-handwheel; 5-water inlet channel; 6-water outlet channel. DETAILED DESCRIPTION

[0021] The following is a further detailed description of a mechanical motion mechanism and a valve having the same proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0022] In the description of the present invention, 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] The core idea of ​​the present invention is to provide a mechanically controlled motion mechanism, which is applied to a valve, so as to extend the motion path of the valve before it is completely closed, extend the high-speed water flow between the valve disc and the valve seat, reduce the pressure on the valve, and carry away impurities through the impact of high-speed water flow, thereby realizing the self-cleaning function of the valve, keeping the sealing surface between the valve disc and the valve seat clean, effectively avoiding the accumulation of impurities in the valve, fundamentally solving the problem of the valve not being tightly closed and difficult to open, improving the performance of the valve, and extending the service life of the valve.

[0024] To this end, this embodiment provides a mechanical motion control mechanism specifically applied to a valve, wherein the mechanical motion control mechanism comprises a moving component and a moving track, wherein the displacement of the moving component at the end of the moving track presents an increasing trend of the Fibonacci sequence.

[0025] Specifically, the Fibonacci sequence satisfies: Xn=Xn-1+Xn-2.

[0026] That is, in this embodiment, each displacement of the moving component at the end of the moving track is equal to the sum of the previous two displacements.

[0027] It is known that in the valve pipeline, the relationship between the flow velocity of turbid water and the flow cross-sectional area is: Q = AV.

[0028] Among them, Q is the flow rate, A is the flow cross-sectional area, and V is the flow velocity of turbid water. It can be seen that when the valve is closed, the closer it is to the completely closed state, the smaller the flow cross-sectional area is, and the greater the flow velocity of turbid water is.

[0029] It can be seen that this embodiment achieves the extension of the movement path of the valve before it is completely closed, and slows down the speed of reduction of the flow cross-sectional area of ​​turbid water, that is, prolongs the time of high-speed circulation of turbid water, so that the high-speed water flow of turbid water can be used to flush impurities in the turbid water away from the front of the valve, thereby reducing water resistance, preventing valve scale accumulation, alleviating water hammer effect, ensuring the working performance of the valve, and increasing the service life of the water valve. The mechanical control motion mechanism provided in this embodiment has a simple structure, low processing cost, and will not affect other structures of the valve, and the overall structure still meets the national standard requirements.

[0030] Furthermore, the mechanical control motion mechanism further includes a control member, which is used to control the motion component to move along the motion track. Preferably, the control member is a hand wheel, which is fixedly mounted on the upper end of the motion component. In specific applications, the motion component can be controlled to move along the motion track simply by rotating the hand wheel.

[0031] It should be noted that the mechanical control motion mechanism provided in this embodiment includes various forms of implementation. For example, in one embodiment, the moving part is an operating rod, and the end of the operating rod is provided with an external thread with a pitch increasing in the Fibonacci sequence, and the motion track is provided with an internal thread matching it. Preferably, the length of the external thread section on the operating rod with a pitch increasing in the Fibonacci sequence accounts for 10% to 20% of the total length of the operating rod. During specific processing, the conventional external parallel thread processing method is still used at the front end and the middle end of the operating rod, and the external thread processing method with a pitch increasing in the Fibonacci sequence is used at the 15% position of the end of the operating rod.

[0032] In addition, the material hardness of the operating rod provided in this embodiment needs to be increased by 2 units or more than before the improvement, so as to increase its wear resistance and pressure bearing value and compensate for the increased wear loss due to the extension of the valve movement path. Preferably, the material of the operating rod is stainless steel.

[0033] For another example, in another embodiment, the moving part is a slider, the moving track is a slide rail adapted to the slider, and the end of the slide rail is a spiral curve with increasing Fibonacci numbers. Preferably, the total length of the spiral curve on the slide rail accounts for 10% to 20% of the total length of the slide rail. During specific processing, the front end and the terminal end of the slide rail still adopt the conventional equal-diameter curve processing method, and the spiral curve processing method with increasing Fibonacci numbers is adopted at the 15% position of the end of the slide rail.

[0034] In addition, similarly, the material hardness of the slider in this embodiment needs to be increased by 2 units or more than before the improvement.

[0035] Based on the same inventive concept, this embodiment also provides a valve, see Figure 1 The valve comprises a hollow valve seat 1, a valve disc 2, and the mechanical control motion mechanism as described above. Specifically, the moving component is an operating rod 3, the end of the operating rod 3 is provided with an external thread with a spacing increasing in the Fibonacci sequence, the motion track is provided with an internal thread matching therewith, a hand wheel 4 is fixedly mounted on the upper end of the operating rod 3, an inlet channel 5 and an outlet channel 6 are provided inside the valve seat 1, a flow port is provided between the inlet channel 5 and the outlet channel 6, and the flow port is provided below the operating rod 3, the operating rod 3 is fixedly connected to the valve disc 2, the operating hand wheel 4 is used to drive the operating rod 3 to move along the motion track, and then the operating rod 3 is used to drive the valve disc 2 to move, so as to control the degree of opening or closing of the flow port.

[0036] The working principle of the valve is as follows:

[0037] Taking the process of closing the valve as an example, when the valve needs to be closed, hold the hand wheel 4 and rotate it, the hand wheel 4 drives the operating rod 2 to move along the motion track, and the operating rod 4 drives the valve flap 2 to move, so that the valve flap 2 gradually closes the flow port, blocking the connection between the water inlet channel 5 and the water outlet channel 6, so that the transportation of turbid water can be shut off. In this embodiment, since the end of the operating rod 3 adopts an external thread design with a spacing increasing in the Fibonacci sequence, during the valve closing process, the movement path of the valve before it is completely closed can be extended, and the time for the turbid water to circulate at a high speed is increased. Therefore, the impurities in the turbid water can be washed away from the front of the valve by the high-speed water flow of the turbid water, effectively avoiding the accumulation of the medium in the turbid water in the valve.

[0038] In summary, the mechanical control motion mechanism and valve having the same provided by the present invention have the following advantages: wherein the mechanical motion control mechanism is applied to the valve, specifically including a moving part and a moving track, and the displacement of the moving part at the end of the moving track presents an increasing trend of the Fibonacci series. Using the mechanical control motion mechanism provided by the present invention in the valve can extend the motion path of the valve before the valve is completely closed, extend the high-speed water flow between the valve disc and the valve seat, reduce the pressure on the valve, and carry away impurities through the impact of the high-speed water flow, thereby realizing the self-cleaning function of the valve, maintaining the clean state of the sealing surface between the valve disc and the valve seat, effectively avoiding the accumulation of impurities in the valve, and fundamentally solving the problem of the valve not being tightly closed and difficult to open, improving the performance of the valve, and extending the service life of the valve.

[0039] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A valve, characterized in that: The valve includes a hollow valve seat, a valve disc and a mechanically controlled motion mechanism; the mechanically controlled motion mechanism includes a moving component and a motion track, and the displacement of the moving component at the end of the motion track presents an increasing trend of the Fibonacci series; an inlet channel and an outlet channel are arranged inside the valve seat, a flow port is arranged between the inlet channel and the outlet channel, and the flow port is arranged below the mechanically controlled motion mechanism, and the mechanically controlled motion mechanism is fixedly connected to the valve disc, and is used to drive the valve disc to move, so as to control the opening or closing degree of the flow port.

2. The valve according to claim 1, characterized in that The moving part is an operating rod, the end of which is provided with an external thread with a pitch increasing in a Fibonacci sequence, and the moving track is provided with an internal thread matching the external thread.

3. The valve according to claim 2, characterized in that The length of the external thread segments on the operating rod whose spacing increases in a Fibonacci sequence accounts for 10% to 20% of the total length of the operating rod.

4. The valve according to claim 2, characterized in that The operating rod is made of stainless steel.

5. The valve according to claim 1, characterized in that The moving component is a slider, the moving track is a slide rail adapted to the slider, and the end of the slide rail is a spiral curve with increasing Fibonacci series.

6. The valve according to claim 5, characterized in that The total length of the spiral curve on the slide rail accounts for 10% to 20% of the total length of the slide rail.

7. The valve according to claim 1, characterized in that The mechanically controlled motion mechanism further comprises a control member, and the control member is used for controlling the motion component to move along the motion track.

8. The valve according to claim 7, characterized in that The control component is a hand wheel, and the hand wheel is fixedly installed on the upper end of the moving component.

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