Flow valve based on iris mechanism

Abstract

This utility model belongs to the field of flow valve technology, specifically providing a flow valve based on an iris mechanism, including a valve body assembly, an iris opening and closing mechanism, a small bevel gear, a sleeve bearing, a flange bearing, an upper end cover, and an air source connector. The valve body assembly includes a valve body and a first ring body. The iris opening and closing mechanism includes an end face flange assembly, a large bevel gear assembly, a gate, and a guide block. The end face flange assembly includes an end face flange and a third ring body, and the large bevel gear assembly includes a large bevel gear and a second ring body. The included angle between the shafts of the small bevel gear and the large bevel gear is 90°, thereby changing the transmission direction. The iris opening and closing mechanism of this utility model drives the bevel gear to cause the gate to retract inward or expand outward, realizing the gate closing and opening functions. The flow valve of this utility model has a simple structure, good adjustment linearity, and can achieve high-precision adjustment over a large flow range, improving production efficiency and reducing production costs.

Description

Technical Field

[0001] This utility model relates to a valve, specifically a flow valve based on an iris mechanism. Background Technology

[0002] With the rapid development of economy and technology, all sectors of society are paying increasing attention to the ecological environment, and the technical requirements for sewage treatment and chemical industry are also getting higher and higher. It is necessary to focus on "improving quality and efficiency" and continuously optimize sewage treatment and chemical production. Therefore, it is particularly urgent and important to research and develop new energy-saving, efficient, scientific and intelligent valve technologies.

[0003] A search revealed a patent with publication number CN108591486A that discloses a valve core and valve seat for a small-flow, high-precision regulating valve. The flow valve includes a valve body, valve cover, valve stem, valve core, and valve seat. By opening a 5° inclined sharp-angle groove on the cylindrical valve core, the flow area of ​​the sharp-angle groove on the valve core changes when the valve seat and valve core move relative to each other. This structure can achieve high-precision regulation of small flow, but the flow regulation range is relatively small.

[0004] For example, patent document CN113007405B discloses a flow valve and a mass flow control device. The flow valve includes a valve body, a moving component, and a displacement sensor. The moving component moves according to the received moving signal to regulate the flow of the flow valve. The displacement sensor determines the actual opening signal of the flow valve based on the amount of movement of the moving component and sends the actual opening signal to the controller. In this structure, fluid fluctuations have a significant impact on flow regulation. In addition, the existing flow valve regulation channel is generally irregular, making the flow valve opening control complex and easily affecting the opening regulation accuracy.

[0005] For example, patent document CN117028606B discloses a flow valve, which includes an outer cavity seat, an inner cavity seat, a slide cylinder, a first flange cavity seat, a ring, and a flow regulating module. The slide cylinder has a perforation at its center; a ring groove is circumferentially spaced in the middle of the slide cylinder; the retaining ring is a ring seat composed of multiple arc-shaped plates; the ring seat is movably engaged inside the first closed-loop groove; a retaining plate is integrally formed on the inner side of the arc plate opposite the slide groove; when the slide cylinder slides linearly, the slide groove and the retaining plate cooperate to adjust the size of the slide groove, thereby regulating the flow rate. This flow valve has a complex structure and a high overall cost. Utility Model Content

[0006] The purpose of this invention is to provide a flow valve based on an iris mechanism. This flow valve can achieve precise adjustment over a large flow range by optimizing the flow valve opening and closing mechanism. It also uses a bevel gear structure to transmit motion and power between two intersecting axes at 90°. It has a simple structure, high transmission efficiency, and long service life.

[0007] To achieve the above objectives, the present invention provides the following technical solution.

[0008] A flow valve based on an iris mechanism includes a valve body assembly, an iris opening and closing mechanism, a small bevel gear, a sleeve bearing, a flange bearing, an upper end cover, and an air source connector.

[0009] The valve body assembly includes a valve body and a first ring body, and the valve body and the first ring body are fitted with an interference fit;

[0010] The iris opening and closing mechanism includes an end face flange assembly, a large bevel gear assembly, a first sealing ring, a gate, and a guide block. The end face flange assembly includes an end face flange, a third ring body, and an O-ring.

[0011] The large bevel gear assembly includes a large bevel gear and a second ring body;

[0012] The guide block has a circular end at one end and a racetrack-shaped end at the other end;

[0013] N rectangular grooves are evenly distributed along the circumferential direction of the right end face of the end flange, and the circular end of the guide block is set on the rectangular groove and can move along the groove direction.

[0014] The large bevel gear has N racetrack-shaped grooves evenly distributed along the circumferential direction of the shaft on its left end face, and the racetrack-shaped end of the guide block is installed in the racetrack-shaped groove.

[0015] The iris opening and closing mechanism includes a gate with a racetrack-shaped through hole that mates with the racetrack-shaped structure of the guide block; the shaft angle between the small bevel gear and the large bevel gear is 90°, thereby changing the transmission direction.

[0016] Furthermore, a groove is provided on the right end face of the valve body to improve the sealing performance between the valve body and the connecting parts;

[0017] The right end face of the first ring body has a groove to improve the sealing effect.

[0018] Furthermore, both the end face flange and the left end face of the third ring are provided with grooves to improve the sealing performance between the valve body and the connecting parts.

[0019] Furthermore, the left end face of the end flange is provided with a positioning pin hole, and the left end face of the valve body is provided with a screw hole corresponding to the positioning pin hole of the end flange, so as to ensure the accuracy and stability of the operation of the transmission mechanism and the opening and closing mechanism; the right end face of the third ring body is provided with a groove for installing the first sealing ring to improve the sealing performance.

[0020] The end face flange and the third ring body adopt an interference fit and hot pressing assembly process, which makes installation convenient and provides a good sealing effect; the end face flange has radial grooves for installing O-rings to improve the sealing performance between the end face flange and the valve body.

[0021] Furthermore, grooves are provided on both the left and right end faces of the second ring body for installing the first sealing ring to improve the sealing performance;

[0022] The large bevel gear and the second ring body adopt an interference fit and hot pressing assembly process, which makes installation convenient and sealing effect good; when the opening and closing mechanism is closed, they are evenly distributed along the circumferential direction of the shaft.

[0023] Furthermore, one end of the small bevel gear is provided with a cylindrical hole, which saves materials, reduces costs, and lightens weight, while the other end has a rectangular cross-section, which facilitates connection and fixation with the actuator.

[0024] The sleeve bearing is installed on the top of the circular boss inside the valve body. The sleeve bearing and the large bevel gear are in clearance fit, and the sleeve bearing and the circular boss inside the valve body are in interference fit. The flange bearing is in clearance fit with the cylindrical surface of the small bevel gear, and the flange surface is in fit with the lower end face of the small bevel gear to ensure the accuracy and stability of the transmission.

[0025] Furthermore, the boss on the lower end face of the upper cover is interference-fitted with the flange bearing; the upper end face of the upper cover is provided with a positioning pin hole, and the upper end face of the valve body is provided with a screw hole corresponding to the positioning pin hole of the upper cover, so as to ensure the accuracy and stability of the transmission mechanism and the opening and closing mechanism.

[0026] Furthermore, the air source connector is installed on the boss at the bottom of the valve body, and the air source connector includes a connector and a second sealing ring; the connecting end of the connector is connected to the valve body with a fine thread.

[0027] Compared with the prior art, the beneficial effects of the flow valve based on the iris mechanism of this utility model are:

[0028] First, this utility model adopts an iris opening and closing mechanism, and designs the sliding groove of the guide block on the end face of the large bevel gear and the end face flange respectively. It has a simple structure, high cost performance, and can achieve high-precision adjustment over a large flow range.

[0029] Secondly, this utility model uses a bevel gear structure to transmit motion and power between two phases with an intersecting axis of 90°, which makes the flow valve transmission efficiency high and has the advantages of compact structure, good stability and long service life.

[0030] Third, this utility model uses a sliding bearing, which has the advantages of being lubrication-free and maintenance-free. In addition, the sliding bearing has a good coefficient of friction, which can effectively reduce wear. It has a simple structure, low price, and is stable and reliable.

[0031] In summary, this utility model optimizes the flow valve opening and closing mechanism, resulting in a simple structure and good linear adjustment, enabling high-precision flow regulation, improving production efficiency, and reducing costs for users. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of a flow valve based on an iris mechanism according to this utility model;

[0033] Figure 2 An enlarged view of the iris opening and closing mechanism in the flow valve provided by this utility model;

[0034] Figure 3 A schematic diagram of the iris mechanism gate in the flow valve provided by this utility model, showing the gate closure state.

[0035] Figure 4 A schematic diagram of the iris mechanism gate opening state in the flow valve provided by this utility model;

[0036] Figure 5 A first-view schematic diagram of the gate in the flow valve provided by this utility model;

[0037] Figure 6 A second-view schematic diagram of the gate in the flow valve provided by this utility model;

[0038] Figure 7 A schematic diagram of the structure of the large bevel gear in the flow valve provided by this utility model.

[0039] The attached figures are labeled as follows:

[0040] 301. Valve body assembly; 302. Iris opening and closing mechanism; 303. Small bevel gear; 304. Sleeve bearing; 305. Flange bearing; 306. Upper end cover; 307. Air source connector; 308. Valve body; 309. First ring; 310. End face flange assembly; 311. Large bevel gear assembly; 312. First sealing ring; 313. Gate; 314. Guide block; 3141. Circular end; 3142. Racetrack-shaped end; 315. End face flange; 316. Third ring; 317. O-ring; 318. Large bevel gear; 3181. Racetrack-shaped groove; 319. Second ring; 320. Connector; 321. Second sealing ring. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0042] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0043] like Figure 1As shown, in one embodiment of this utility model, a flow valve based on an iris mechanism is provided, including a valve body assembly 301, an iris opening and closing mechanism 302, a small bevel gear 303, a sleeve bearing 304, a flange bearing 305, an upper end cover 306, and an air source connector 307.

[0044] In this embodiment of the present invention, the valve body assembly 301 includes a valve body 308 and a first ring body 309. The right end face of the valve body 308 is provided with a groove, and the number of grooves can be multiple, so as to improve the sealing performance between the valve body 308 and the connecting piece; the right end face of the first ring body 309 is provided with a groove, and the number of grooves can be multiple, so as to improve the sealing effect.

[0045] Preferably, the valve body 308 and the first ring body 309 are fitted with an interference fit and assembled by hot pressing, which makes installation convenient and provides a good sealing effect.

[0046] Furthermore, such as Figure 1 As shown, the iris opening and closing mechanism 302 provided by this utility model includes an end flange assembly 310, a large bevel gear assembly 311, a first sealing ring 312, a gate 313, and a guide block 314.

[0047] like Figure 2 , Figure 5 and Figure 6 As shown, the guide block 314 has a circular end 3141 at one end and a racetrack-shaped end 3142 at the other end, which has a simple structure and is easy to process;

[0048] The end face flange assembly 310 includes an end face flange 315, a third ring body 316, and an O-ring 317.

[0049] Among them, N rectangular grooves are evenly distributed along the circumferential direction of the right end face of the end flange 315. Preferably, N is 6 in this embodiment. The circular end 3141 of the guide block 314 is set on the rectangular groove and can move along the groove direction.

[0050] Furthermore, the left end faces of both the end flange 315 and the third ring body 316 are provided with grooves, and the number of grooves can be multiple, in order to improve the sealing performance between the valve body 308 and the connecting parts.

[0051] Furthermore, the left end face of the end flange 315 is provided with a positioning pin hole, and the left end face of the valve body 308 is provided with a screw hole corresponding to the positioning pin hole of the end flange 315, so as to ensure the accuracy and stability of the operation of the transmission mechanism and the opening and closing mechanism; the right end face of the third ring body 316 is provided with a groove, and the number of grooves can be multiple, for installing the first sealing ring 312 to improve the sealing performance.

[0052] Furthermore, such as Figure 1 and Figure 2As shown, the end face flange 315 and the third ring body 316 adopt an interference fit and hot pressing assembly process, which is convenient to install and has a good sealing effect; the end face flange 315 is provided with radial grooves, and the number of grooves can be multiple, for installing O-rings 317 to improve the sealing performance between the end face flange 315 and the valve body 308.

[0053] The large bevel gear assembly 311 includes a large bevel gear 318 and a second ring body 319;

[0054] like Figure 7 As shown, N racetrack-shaped grooves 3181 are evenly distributed along the circumferential direction of the axis on the left end face of the large bevel gear 318. Preferably, N is 6 in this embodiment. The racetrack-shaped end 3142 of the guide block 314 is installed in the racetrack-shaped groove 3181.

[0055] The second ring body 319 has grooves on both its left and right end faces. There can be multiple grooves for installing the first sealing ring 312 to improve the sealing performance. The large bevel gear 318 and the second ring body 319 adopt an interference fit and hot pressing assembly process, which makes installation convenient and provides a good sealing effect. When the opening and closing mechanism is closed, the gears are evenly distributed along the circumferential direction of the shaft.

[0056] Furthermore, the iris opening and closing mechanism 302 includes a gate 313 with a racetrack-shaped through hole that matches the racetrack-shaped structure of the guide block 314, for fixing the guide block 314 and ensuring the accuracy of the movement.

[0057] The small bevel gear 303 has a cylindrical hole at one end, which saves materials, reduces costs, and lightens weight. The other end has a rectangular cross-section, which facilitates connection with an external control actuator.

[0058] The included angle between the shafts of the small bevel gear 303 and the large bevel gear 318 is 90°, thereby changing the transmission direction.

[0059] This utility model uses an external control actuator to drive the small bevel gear 303 to rotate a certain angle.

[0060] Both the sleeve bearing 304 and the flange bearing 305 require no additional lubrication, have stable mechanical properties, low coefficient of friction, long service life, and high cost performance;

[0061] The sleeve bearing 304 is installed on the top of the circular boss inside the valve body 308. The sleeve bearing 304 and the large bevel gear 318 are in clearance fit, and the sleeve bearing 304 and the circular boss inside the valve body 308 are in interference fit. The flange bearing 305 is in clearance fit with the cylindrical surface of the small bevel gear 303, and the flange surface is in fit with the lower end face of the small bevel gear 303 to ensure the accuracy and stability of the transmission.

[0062] Furthermore, in this embodiment of the present invention, the boss provided on the lower end face of the upper end cover 306 is interference-fitted with the flange bearing 305; the upper end face of the upper end cover 306 is provided with a positioning pin hole, and the upper end face of the valve body 308 is provided with a screw hole corresponding to the positioning pin hole of the upper end cover 306, so as to facilitate the installation and fixing of the upper end cover 306 and ensure the accuracy and stability of the operation of the transmission mechanism and the opening and closing mechanism.

[0063] For further information, please refer to [link / reference]. Figure 1 The air source connector 307 is installed on the boss at the bottom of the valve body 308. When there is a liquid leak, the air source connector 307 can be opened to drain the leaked liquid in time, which is convenient for inspection and maintenance, simple to operate, and improves the service life of the product. The air source connector 307 includes a connector 320 and a second sealing ring 321. The connector 320 adopts a fine thread to improve the sealing performance between it and the valve body 308. The connecting end of the connector 320 is connected to the valve body 308 with a fine thread.

[0064] This invention uses an air pipe interface installed at the connector 320 to inject gas into the valve body 308 and maintain pressure, thereby testing the internal sealing of the valve body 308 and preventing liquid leakage.

[0065] Working principle: When the driving small bevel gear 303 rotates clockwise around the circumference, it simultaneously drives the driven large bevel gear 318 to rotate around the circumference, thereby driving the cylindrical surfaces of N guide blocks 314 to rotate synchronously within the grooves of the large bevel gear 318. In this embodiment, N=6. The U-shaped cylindrical surfaces move synchronously within the grooves of the end flange 315, causing the gate 313 to retract inwards towards the center point of the valve channel in a ring shape. The opening is adjustable, and the gate 313 closes as follows: Figure 3 As shown, conversely, when gate 313 opens... Figure 4 As shown.

[0066] The flow valve of this utility model adopts an iris opening and closing mechanism 302, and the sliding groove of the guide block 314 is designed on the end face of the large bevel gear 318 and the end face flange 315 respectively. It has a simple structure, high cost performance, and can achieve high-precision adjustment over a large flow range.

[0067] The flow valve of this utility model uses a bevel gear structure to transmit motion and power between two phases with an intersecting axis of 90°, which makes the flow valve have high transmission efficiency, compact structure, good stability and long service life.

[0068] The flow valve of this invention uses a sliding bearing, which has the advantages of being lubrication-free and maintenance-free; it also has a good coefficient of friction, which can reduce wear, and has a simple structure, low price, and is stable and reliable.

[0069] The above solutions are merely illustrative examples of preferred embodiments, but are not limited thereto. When implementing this invention, appropriate substitutions and / or modifications can be made according to the user's needs.

[0070] Although embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. Other modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. A flow valve based on an iris recognition mechanism, characterized in that, It includes a valve body assembly (301), an iris opening and closing mechanism (302), a small bevel gear (303), a sleeve bearing (304), a flange bearing (305), an upper end cover (306), and an air source connector (307); The valve body assembly (301) includes a valve body (308) and a first ring body (309), and the valve body (308) and the first ring body (309) are fitted with an interference fit; The iris opening and closing mechanism (302) includes an end face flange assembly (310), a large bevel gear assembly (311), a first sealing ring (312), a gate (313), and a guide block (314), wherein the end face flange assembly (310) includes an end face flange (315), a third ring body (316), and an O-ring (317); The large bevel gear assembly (311) includes a large bevel gear (318) and a second ring body (319); The guide block (314) has a circular end at one end and a racetrack-shaped end at the other end; The right end face of the end flange (315) has N rectangular grooves evenly distributed along the circumferential direction of the axis, and the circular end of the guide block (314) is set on the rectangular groove and can move along the groove direction; The large bevel gear (318) has N racetrack-shaped grooves evenly distributed along the circumferential direction of the shaft on its left end face, and the racetrack-shaped end of the guide block (314) is installed in the racetrack-shaped groove; The iris opening and closing mechanism (302) includes a gate (313) with a runway-shaped through hole that cooperates with the runway-shaped structure of the guide block (314); The included angle between the shafts of the small bevel gear (303) and the large bevel gear (318) is 90°.

2. The flow valve based on an iris recognition mechanism according to claim 1, characterized in that, The valve body (308) has a groove on its right end face; The right end face of the first ring body (309) is provided with a groove.

3. A flow valve based on an iris recognition mechanism according to claim 2, characterized in that, The left end face of both the end flange (315) and the third ring body (316) is provided with a groove.

4. A flow valve based on an iris recognition mechanism according to claim 3, characterized in that, The left end face of the end face flange (315) is provided with a positioning pin hole, and the left end face of the valve body (308) is provided with a screw hole corresponding to the positioning pin hole of the end face flange (315). The right end face of the third ring body (316) is provided with a groove for installing the first sealing ring (312); The end face flange (315) and the third ring body (316) are fitted with an interference fit; The end face flange (315) has radial grooves for installing O-rings (317).

5. A flow valve based on an iris recognition mechanism according to claim 4, characterized in that, The second ring (319) has grooves on both its left and right end faces for installing the first sealing ring (312); The large bevel gear (318) and the second ring (319) are fitted with an interference fit.

6. A flow valve based on an iris recognition mechanism according to claim 5, characterized in that, The sleeve bearing (304) is installed on the top of the circular boss inside the valve body (308). The sleeve bearing (304) and the large bevel gear (318) are in clearance fit, and the sleeve bearing (304) and the circular boss inside the valve body (308) are in interference fit. The flange bearing (305) is clearance-fitted with the cylindrical surface of the small bevel gear (303), and the flange surface is fitted with the lower end face of the small bevel gear (303).

7. A flow valve based on an iris mechanism according to claim 6, characterized in that, The boss on the lower end face of the upper end cover (306) is interference-fitted with the flange bearing (305); The upper end cover (306) is provided with a positioning pin hole on its upper end surface, and the upper end surface of the valve body (308) is provided with a screw hole corresponding to the positioning pin hole of the upper end cover (306).

8. A flow valve based on an iris recognition mechanism according to claim 7, characterized in that, The gas source connector (307) is installed on the boss at the bottom of the valve body (308). The gas source connector (307) includes a connector (320) and a second sealing ring (321). The connector (320) adopts a fine thread, and the connecting end of the connector (320) is connected to the valve body (308) with a fine thread.

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