CN209483973U - Fluid valve - Google Patents

Abstract

The utility model relates to a fluid valve, which is designed to solve the technical problems of relatively large torque required due to large friction force, long opening and closing time, large power consumption and difficult switching in place in existing similar products. There is a sphere in the valve body of the valve, and a lifting component is set on the top of the sphere. The top side of the lifting rod of the lifting assembly is provided with a transmission pin, the fixed frame of the valve cover is provided with a guide sleeve, and the wall of the guide sleeve is provided with a lifting hole; the end of the transmission pin protruding from the lifting rod is provided with two side by side. Bearings are respectively provided with the lifting hole of the guide sleeve and the guide groove on the inner wall of the spiral sleeve. A spiral sleeve is provided between the fixed frame and the guide sleeve in the fixed frame; It abuts against the contact piece of the first micro switch or the second micro switch on the top side of the fixed frame, and sends position and stroke information.

Description

fluid valve

technical field

The utility model relates to a fluid valve, which is a fluid valve.

Background technique

A fluid valve is a valve that controls fluid flow by changing the cross-section or length. The existing fluid valves generally use a spherical seal; for example, the application number 201110080967.1 disclosed in the Chinese patent literature, the application publication date 2012.10.17, the name of the invention " A lifting rod type ball valve"; the ball valve includes a valve body, a valve seat, a ball, a valve cover, a valve stem, several sets of sealing packing, a packing gland and an actuator, the sealing surface of the valve seat includes a sealing area and a supporting area, and the sealing The area includes the inner sealing surface and the outer sealing surface. The inner sealing surface and the outer sealing surface are separated by a buffer groove. The supporting area includes the inner supporting surface and the outer supporting surface. The inner supporting surface is set on the inner side of the inner sealing surface, and the outer supporting surface is set on the outer sealing surface. to form the sealing surface of the lips. However, there are some problems in the above-mentioned products and similar products, such as under high working pressure, there is a large friction force between the ball and the sealing assembly, which causes the required torque of the switching valve to be much greater than the working pressure. Therefore, it is a better way to avoid friction by letting the ball leave first and then rotate. There are also such methods in the prior art, and most of them use the method of screw and screw sleeve plus guide plate. The biggest problem of this method is the screw. Or there is a stuck point between the screw sleeve and the guide plate and it is easy to lock, which is unreliable. The screw and the screw sleeve also produce a lot of friction, so the torque required by this method is also very large, resulting in a long time for switching the valve, which greatly Increased power consumption, the switch is difficult to install in place and other issues.

Contents of the invention

In order to overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a fluid valve in the field, so that it can solve the problem of large friction force, large torque required, long opening and closing time, and large power consumption in existing similar products. It is a technical problem that it is difficult to switch in place. Its purpose is achieved through the following technical solutions.

A fluid valve, the valve hole in the valve body is provided with a sphere at the junction of the inlet and outlet, the valve hole is provided with a gasket at the inlet of the valve body, and the sphere on the side of the gasket is provided with a protruding The arc-shaped sealing spherical surface, the arc-shaped sealing spherical surface of the sphere and the sealing gasket are sealed against each other. The top of the sphere is equipped with a lifting component. The lifting rod of the lifting component extends out of the bonnet at the top of the valve body. There is an executive component, the executive component is connected with the lifting component through the rotating component, and the rotating component of the executing component is an executing gear; thus the lifting component is driven by the executing component to rotate through the rotating component to realize the up and down movement, and then the lifting component drives the ball in the valve body to lift , and finally realize the opening and closing of the sphere in the valve body, that is, the opening and closing of the valve body. The main points of its structural design are that a transmission pin is provided on the top side of the lifting rod of the lifting assembly, a fixed frame is provided at the extension of the lifting rod of the valve cover, a guide sleeve is provided in the fixed frame, and an L-shaped or L-shaped sleeve wall is provided on the guide sleeve wall. "7"-shaped lifting hole, the driving pin of the lifting rod is inserted into the lifting hole of the guide sleeve, and the lifting rod extends out of the gear groove on one side of the fixed frame. The above-mentioned structure keeps the movement of the lifting rod in the lifting assembly in the orbital direction of the lifting hole, thereby making the movement of the lifting assembly and the lifting of the ball more stable; the gear of the above-mentioned lifting assembly is set on the outer diameter of the lifting rod, or the following spiral sleeve outside diameter.

A bearing is provided at one end of the transmission pin protruding from the lifting rod, and the bearing of the lifting rod is arranged in the lifting hole of the guide sleeve. The above-mentioned structure further stabilizes the orbital movement of the transmission pin in the lifting hole through the sliding fit of the bearing of the transmission pin and the lifting hole of the guide sleeve.

The end of the transmission pin protruding from the lifting rod is provided with two side-by-side bearings, a spiral sleeve is provided between the fixing frame and the guide sleeve in the fixed frame, the bearing on one side of the lifting rod is arranged in the lifting hole of the guide sleeve, and the transmission Another bearing on the outside of the pin is set in the guide groove on the inner wall of the helical sleeve. The sleeve gear at the bottom of the helical sleeve meshes with the executive gear of the executive component through the gear groove at the opening on one side of the fixed frame. The sleeve gear and the helical sleeve are connected as a One. In the above structure, one bearing of the transmission pin is slidably matched with the lifting hole of the guide sleeve, and the other bearing of the transmission pin is slidably matched with the guide groove of the spiral sleeve, so that the orbital movement of the transmission pin in the lifting hole is further stabilized.

The top of the lifting rod of the lifting assembly is provided with a rod sleeve, the rod sleeve is connected with the lifting rod as a whole, the top of the rod sleeve protrudes from the fixing frame and the guide sleeve, and the side of the protruding end of the rod sleeve is provided with a switch shaft , the switch shaft is against the contacts of the first micro switch or the second micro switch on the top side of the fixed frame, the first micro switch and the second micro switch are arranged on the fixed frame through the switch frame, the first micro switch and the second micro switch The second micro switch is connected with the controller through a line. Therefore, the position and stroke information of the valve is sent to the controller by triggering the contact piece corresponding to the first micro switch or the second micro switch through the switch shaft on one side of the rod sleeve, so as to facilitate remote monitoring of the working state of the valve.

The lifting rod of the lifting assembly, the transmission pin of the lifting rod, and the switch shaft of the rod sleeve have a rotation angle of 90 degrees, and the angles on both sides of the lifting hole of the guide sleeve are between 80 degrees and 120 degrees. A micro switch and a second micro switch. The above is the specific embodiment and optimal stroke setting of the 90-degree rotation of the corresponding component in the valve.

The bottom of the lifting rod of the lifting assembly is provided with a lifting plate fixed by screws, the lifting plate is obliquely inserted and fixed on the top of the sphere, and the ball head at the bottom of the sphere is fastened with the ball groove at the valve hole in the valve body. The above-mentioned structure facilitates the further stabilization of the lifting assembly and the lifting motion of the ball, as well as the further stabilization of the ball in the closed state of the valve.

The utility model has the advantages of reasonable structural design, small frictional force, small required torsion force, short valve switching time, low power consumption, and accurate switching; it is suitable for use as a fluid valve, and is a structural improvement of similar products.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

Fig. 2 is a structural schematic diagram of the lifting assembly of the present invention.

Fig. 3 is a partial cross-sectional structural schematic diagram of the partial structure of the fixing frame of the present invention.

Fig. 4 is a partial cross-sectional structural schematic diagram of the partial structure of the spiral sleeve of the present invention.

Fig. 5 is a first structural schematic diagram of the working principle between the rod sleeve of the present invention and the first micro switch and the second micro switch.

Fig. 6 is the second structural schematic diagram of the working principle between the rod sleeve of the present invention and the first micro switch and the second micro switch.

Accompanying drawing number and name: 1, valve body, 2, sphere, 3, sealing gasket, 4, lifting component, 401, lifting plate, 402, lifting rod, 403, rod sleeve, 5, bearing, 6, transmission pin, 7, spiral sleeve, 701, guide groove, 8, switch shaft, 9, executive assembly, 10, valve cover, 11, fixed frame, 12, guide sleeve, 1201, lifting hole, 13, the first micro switch, 14, Second micro switch.

Detailed ways

Now in conjunction with accompanying drawing, the utility model structure and use are further described. As shown in Figures 1-6, the valve hole of the valve body 1 is provided with a ball 2 at the junction of the air inlet and the outlet, and the valve hole of the valve body is provided with a gasket 3, and the gasket 1 The ball on the side is provided with a raised arc-shaped sealing spherical surface, the arc-shaped sealing spherical surface of the ball is against the gasket for sealing, the ball head at the bottom of the ball is fastened with the ball groove at the valve hole in the valve body, and the top of the ball is equipped with a lifting assembly 4. The lifting assembly includes a lifting plate 401 , a lifting rod 402 and a rod sleeve 403 . The bottom of the lifting rod of the lifting assembly is provided with a lifting plate fixed by screws, and the lifting plate is obliquely inserted and fixed on the top of the sphere; An executive component 9 is arranged on the side, and the executive component is connected with the lifting component through a rotating component. The rotating component of the executing component is an implementing gear, and the executing component is connected with the controller through a line. The top side of the lifting rod of the lifting assembly is provided with a transmission pin 6, and the extension of the lifting rod of the valve cover is provided with a fixed frame 11, and a guide sleeve 12 is arranged in the fixed frame, and a screw is provided between the fixed frame and the guide sleeve in the fixed frame. Sleeve 7, the sleeve body gear at the sleeve opening at the bottom of the helical sleeve meshes with the executive gear of the executive component through the gear groove at the opening on one side of the fixed frame, and the sleeve body gear is connected with the helical sleeve as a whole. The wall of the guide sleeve is provided with an L-shaped or "7"-shaped lifting hole 1201, the angles of both sides of the lifting hole are between 80° and 120°, the driving pin of the lifting rod is inserted into the lifting hole of the guiding sleeve, and the lifting rod protrudes Gear slot on one side of the mount.

Simultaneously, one end of the drive pin protruding from the lifting rod is provided with two bearings 5 arranged side by side, the bearing on one side of the lifting rod is arranged in the lifting hole of the guide sleeve, and the other bearing on the outside of the drive pin is arranged in the guide groove 701 of the inner wall of the spiral sleeve. . There is a rod sleeve on the top of the lifting rod of the lifting component, and the rod sleeve is connected with the lifting rod as a whole. The top of the rod sleeve protrudes from the fixing frame and the guide sleeve, and the side of the extending end of the rod sleeve is provided with a switch shaft 8. The switch shaft is in contact with the first micro switch 13 or the contact piece of the second micro switch 14 on the top side of the fixed frame. The first micro switch and the second micro switch are arranged on the fixed frame through the switch frame. The first micro switch and the second micro switch are connected with the controller through a line. The rotation angle of the lifting rod of the above-mentioned lifting assembly, the transmission pin of the lifting rod, and the switch shaft of the rod sleeve is 90 degrees.

The working principle of the valve is as follows: when the valve is driven by the executive component to rotate the rotating component clockwise, the spiral sleeve drives the bearing and the transmission pin to rotate, and the transmission pin drives the lifting component to move according to the lifting hole orbit of the guide sleeve, and the lifting component first rises The movement makes the ball leave the gasket and the ball groove of the valve body, and then rotate 90 degrees to realize the opening of the valve. When it is closed, the executive component drives the rotating component to rotate counterclockwise, and the lifting component first rotates 90 degrees counterclockwise. At this time, the spiral sleeve continues to rotate counterclockwise, and the lifting component moves down according to the lifting hole track of the guide sleeve, so that the ball and the sealing pad are pressed Tight, the ball head of the ball is fastened with the ball groove of the valve body, and the valve is closed.

To sum up, the valve is composed of a helical assembly (spiral sleeve), a lifting assembly, an executive assembly, and a rotating assembly inside the actuating assembly. The inner guide groove of the helical sleeve drives the transmission pin on one side of the lifting rod in the lifting assembly to move along the track. The way of movement, so as to drive the lifting component to move up and down. The lifting hole of the guide sleeve is in the shape of "7" and L-shaped, and the angles on both sides of the lifting hole are between 80 degrees and 120 degrees. The first micro switch and the second micro switch of the in-position switch are added to the opening and closing ends of the valve, and the corresponding first micro switch is triggered by the switch shaft on the side of the rod sleeve at the top of the lifting rod in the lifting assembly. switch or a second microswitch implementation. The valve adopts the transmission method of internal screw plus guide sleeve, transmission pin, and bearing. There is no dead point, and the friction force is greatly reduced by the screw transmission. Under the same working pressure, the opening and closing time of the valve is shortened by more than seven times compared with the traditional method. .

Claims (6)

1. A fluid valve, the valve hole of the valve body (1) is provided with a ball (2) at the junction of the inlet and outlet, and the valve hole of the valve body is provided with a gasket (3) , the sphere on one side of the gasket is provided with a raised arc-shaped sealing sphere, the arc-shaped sealing sphere of the sphere contacts and seals against the gasket, and the top of the sphere is provided with a lifting assembly (4), and the lifting rod (402) of the lifting assembly extends out The bonnet (10) on the top of the valve body is provided with an executive component (9) on the side of the lifting rod extension end of the bonnet, the executive component is connected with the lifting component through a rotating component, and the rotating component of the executive component is an actuating gear; A transmission pin (6) is provided on the top side of the lifting rod (402) of the lifting assembly (4), and a fixing frame (11) is provided at the protruding part of the lifting rod of the valve cover (10), and a guide sleeve ( 12), the wall of the guide sleeve is provided with an L-shaped or "7"-shaped lifting hole (1201), the driving pin of the lifting rod is inserted into the lifting hole of the guiding sleeve, and the lifting rod extends out of the gear groove on one side of the fixing frame. 2. The fluid valve according to claim 1, characterized in that the end of the transmission pin (6) protruding from the lifting rod (402) is provided with a bearing (5), and the bearing of the lifting rod is arranged on the guide sleeve (12). Riser hole (1201). 3. The fluid valve according to claim 1, characterized in that the end of the transmission pin (6) protruding from the lifting rod (402) is provided with two bearings (5) arranged side by side, and the bearings (5) in the fixed frame (11) There is a spiral sleeve (7) between the fixed frame and the guide sleeve (12), the bearing on one side of the lifting rod is set in the lifting hole (1201) of the guide sleeve, and the other bearing on the outside of the drive pin is set in the guide groove on the inner wall of the spiral sleeve (701), the casing gear at the bottom opening of the spiral casing meshes with the execution gear of the executive component through the gear groove at the opening on one side of the fixing frame, and the casing gear and the spiral casing are connected as a whole. 4. The fluid valve according to claim 1, characterized in that the top of the lifting rod (402) of the lifting component (4) is provided with a rod sleeve (403), the rod sleeve is connected with the lifting rod as a whole, and the rod sleeve The top of the barrel protrudes from the fixed frame (11) and the guide sleeve (12), and the side of the extended end of the rod sleeve is provided with a switch shaft (8), and the switch shaft and the first micro switch on the top side of the fixed frame (11) (13) or the contacts of the second micro switch (14), the first micro switch and the second micro switch are arranged on the fixed frame through the switch frame, and the first micro switch and the second micro switch are connected to each other through the circuit Controller connection. 5. The fluid valve according to claim 4, characterized in that the lifting rod (402) of the lifting assembly (4), the driving pin (6) of the lifting rod, and the switch shaft (8) of the rod sleeve (403) ) rotation angle is 90 degrees, the angle on both sides of the lifting hole (1201) of the guide sleeve (12) is between 80 degrees and 120 degrees, the first micro switch (13) and the second micro switch of the switch frame on the fixed frame (11) switch (14). 6. The fluid valve according to claim 1, characterized in that the bottom of the lifting rod (402) of the lifting component (4) is provided with a lifting plate (401) fixed by screws, and the lifting plate is obliquely inserted and fixed on the ball ( 2), the ball head at the bottom of the ball is fastened with the ball groove at the valve hole in the valve body (1).