Flange combination device, rod body rotating device and valve

Abstract

The invention relates to a flange combination device, a rod body rotating device and a valve, the flange combination device comprises a double-flange assembly, the double-flange assembly comprises a first flange plate and a second flange plate, the first flange plate is used for being detachably connected with an interface flange plate in an executing mechanism, and the second flange plate is used for being detachably connected with an interface flange plate in a main body mechanism; the double-shaft-sleeve assembly is arranged in inner holes of the first flange plate and the second flange plate in a penetrating mode. The double-shaft-sleeve assembly comprises an inner shaft sleeve and an outer shaft sleeve which are fixed in the circumferential direction, the first end of the inner shaft sleeve is used for being fixedly inserted into a rod body of a main body mechanism in the circumferential direction, the second end of the inner shaft sleeve can be inserted into the first end of the outer shaft sleeve in an axial sliding mode, and the second end of the outer shaft sleeve is used for being fixedly inserted into an inner sleeve in an executing mechanism in the circumferential direction. The problem that in the prior art, when an executing mechanism is damaged and needs to be replaced with a new executing mechanism, the new executing mechanism has many specifications and cannot be connected with an old main body mechanism and a rod body on the main body mechanism in a matched mode can be solved.

Description

Technical Field

[0001] The invention relates to the field of combined installation of actuators, and in particular to a flange combination device, a rod body rotating device and a valve. Background Art

[0002] In industrial automation systems, the valve actuator is usually connected to the valve body by flange connection. However, due to the wide variety of actuator models and specifications, the interface diameters are also different, which makes it impossible for different types of actuators to achieve efficient, safe and stable connection with the reused valve body. Through research and investigation of the connection methods and valve body structures of different types of actuators on site, it is found that when the valve actuator is damaged and needs to be replaced with a new one, the following problems exist:

[0003] (1) Different actuators cannot be highly adapted, the new actuator cannot be effectively connected to the valve stem on the reused valve body, and effective control of the actuator cannot be achieved.

[0004] (2) The flange on the new actuator and the flange on the old valve body cannot be adapted. The flanges are of different sizes and need to be reprocessed to adapt the flanges.

[0005] Therefore, a combined device is needed to connect different actuators and reused valve bodies to achieve effective connection with each other and ultimately achieve stable control. Summary of the invention

[0006] The purpose of the present invention is to provide a flange combination device, a rod rotation device and a valve, which can solve the problem in the prior art that when an actuator is damaged and needs to be replaced with a new actuator, the new actuator structure has many specifications and cannot be adapted and connected with the old main body and the rod on the main body.

[0007] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0008] The present invention provides a flange assembly device for connecting an actuator and a main body having a rod body, wherein the actuator can drive the rod body to rotate; the flange assembly device comprises:

[0009] A double flange assembly, comprising a first flange and a second flange which are coaxially spaced and have different outer diameters, the first flange and the second flange being connected via a connecting tube, the first flange being used to be detachably connected to an interface flange in an actuator, and the second flange being used to be detachably connected to an interface flange in a main body;

[0010] A double-axle sleeve assembly is inserted into the inner holes of the first flange and the second flange; the double-axle sleeve assembly includes an inner sleeve and an outer sleeve which are fixed in a circumferential direction, the first end of the inner sleeve is used to be fixedly connected to the rod body of the main mechanism in a circumferential direction, the second end of the inner sleeve can be axially slidably inserted into the first end of the outer sleeve and the axial length of the double-axle sleeve assembly can be adjusted by sliding, and the second end of the outer sleeve is used to be fixedly connected to the circumferentially connected to the rotatable inner sleeve in the actuator.

[0011] In a preferred embodiment of the present invention, an inner key groove is provided on the inner wall of the outer sleeve along its axial direction, with one end being connected to the first end face of the outer sleeve and the other end being closed, and an outer key groove is provided on the outer wall of the inner sleeve along its axial direction, with both ends being closed, and a key structure is installed in the outer key groove, and the key structure can be axially slidably inserted in the inner key groove.

[0012] In a preferred embodiment of the present invention, a long strip-shaped limiting groove is provided on the inner wall of the inner sleeve along its axial direction, with one end connected to the first end surface of the inner sleeve and the other end closed, and a limiting block is provided on the outer wall of the rod body, and the limiting block can be inserted into the long strip-shaped limiting groove.

[0013] In a preferred embodiment of the present invention, a plurality of first arc-shaped clamping blocks are circumferentially spaced apart on the second end surface of the outer sleeve, and a plurality of second arc-shaped clamping blocks are circumferentially spaced apart on the inner wall of the inner sleeve. The plurality of first arc-shaped clamping blocks can be circumferentially staggered and engaged with the plurality of second arc-shaped clamping blocks.

[0014] In a preferred embodiment of the present invention, the actuator also includes an actuator housing and a driving mechanism, and a first interface flange is provided on the actuator housing for connecting the first flange; the inner sleeve is rotatably inserted in the inner hole of the first interface flange, and the driving mechanism is connected to the inner sleeve and can drive the inner sleeve to rotate.

[0015] In a preferred embodiment of the present invention, the main body mechanism further comprises a main body shell, on which a second interface flange is provided for connecting the second flange; the rod body is rotatably inserted into the inner hole of the second interface flange.

[0016] In a preferred embodiment of the present invention, a plurality of first connecting holes are circumferentially opened on the first flange, and a plurality of second connecting holes are circumferentially opened on the second flange, so as to be connected to the interface flange in the actuator and the interface flange in the main mechanism respectively through fasteners.

[0017] The present invention also provides a rod body rotating device, comprising an actuator, a main body mechanism having a rod body and the above-mentioned flange assembly device.

[0018] The present invention also provides a valve, including an actuator, a valve body with a valve stem and the above-mentioned flange combination device, the second flange can be detachably connected to the interface flange on the valve body, and the first end of the inner sleeve can be circumferentially fixedly connected to the first end of the valve stem.

[0019] In a preferred embodiment of the present invention, the valve body is a reused valve body, the valve stem is a reused valve stem, a valve core is provided in the valve body, and the second end of the valve stem can be rotatably inserted into the inner hole of the interface flange on the valve body and connected to the valve core; the actuator can drive the inner sleeve to rotate, so as to drive the valve stem to rotate through the double-shaft sleeve assembly.

[0020] As described above, the present invention can achieve effective connection between the flanges on the actuators of different sizes and the flanges on the main body by using the two flanges with different outer diameters in the double flange assembly, thereby achieving the adaptation of the flanges of the actuator and the flanges of the main body; the double sleeve assembly can achieve effective connection between the inner sleeve on the actuator and the rod body on the main body, and the inner sleeve and the outer sleeve can slide axially relative to each other, so that the axial length of the entire double sleeve assembly can be adjusted, and it can be suitable for different rod lengths, thereby achieving the adaptation of the actuator and the rod body. Furthermore, when the actuator connected to the main body is damaged and needs to be replaced with a new actuator, the flange assembly device can be used to achieve effective connection between the new actuator structure and the old main body, which is more conducive to the reuse of the old main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0022] in:

[0023] Figure 1 This is a schematic structural diagram of the double flange assembly provided by the present invention.

[0024] Figure 2 for Figure 1 Top view of the .

[0025] Figure 3 This is a schematic structural diagram of the double-axle sleeve assembly provided by the present invention.

[0026] Figure 4 This is a schematic structural diagram of the inner shaft sleeve provided by the present invention.

[0027] Figure 5 for Figure 4 Top view of the .

[0028] Figure 6 This is a schematic structural diagram of the outer shaft sleeve provided by the present invention.

[0029] Figure 7 for Figure 6 Top view of the .

[0030] Figure 8 for Figure 6 Bottom view of .

[0031] Description of Figure Numbers:

[0032] 1. Double flange assembly; 11. First flange; 111. First connecting hole; 12. Second flange; 121. Second connecting hole; 13. Connecting tube;

[0033] 2. Double shaft sleeve assembly; 21. Inner shaft sleeve; 211. Outer keyway; 212. Long strip limiting groove; 22. Outer shaft sleeve; 221. Inner keyway; 222. First arc-shaped clamping block; 23. Key structure. DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0035] like Figures 1 to 8 As shown, the present application provides a flange assembly device for connecting an actuator and a main body having a rod body, wherein the actuator can drive the rod body to rotate; the flange assembly device includes:

[0036] A double flange assembly 1 comprises a first flange 11 and a second flange 12 which are coaxially spaced and have different outer diameters, the first flange 11 and the second flange 12 being connected via a connecting tube 13, the first flange 11 being used to be detachably connected to an interface flange in an actuator, and the second flange 12 being used to be detachably connected to an interface flange in a main mechanism;

[0037] The double-shaft sleeve assembly 2 is inserted into the inner holes of the first flange 11 and the second flange 12; the double-shaft sleeve assembly 2 includes an inner shaft sleeve 21 and an outer shaft sleeve 22 which are fixed in the circumferential direction, the first end of the inner shaft sleeve 21 is used to be fixedly connected with the rod body of the main mechanism in the circumferential direction, the second end of the inner shaft sleeve 21 can be axially slidably inserted into the first end of the outer shaft sleeve 22 and the axial length of the double-shaft sleeve assembly 2 can be adjusted by sliding, and the second end of the outer shaft sleeve 22 is used to be fixedly connected with the rotatable inner sleeve in the actuator in the circumferential direction.

[0038] Thus, through the cooperation of the double flange assembly 1 and the double shaft sleeve assembly 2, the two flanges with different outer diameters in the double flange assembly 1 can be used to effectively connect the flanges on the actuators of different sizes with the flanges on the main body, and the flanges of the actuators and the flanges of the main body can be adapted; the double shaft sleeve assembly 2 can be used to effectively connect the inner sleeve on the actuator with the rod body on the main body, and the inner shaft sleeve 21 and the outer shaft sleeve 22 can slide relative to each other axially, and the axial length of the entire double shaft sleeve assembly 2 can be adjusted, which can be suitable for different rod lengths, and the adaptation of the actuator and the rod body can be achieved. Furthermore, when the actuator connected to the main body is damaged and a new actuator needs to be replaced, the flange combination device can be used to effectively connect the new actuator structure with the old main body, which is more conducive to the reuse of the old main body.

[0039] In the specific implementation, refer to Figures 3 to 8 In order to facilitate the circumferential fixation and axial sliding of the inner sleeve 21 and the outer sleeve 22, the inner wall of the outer sleeve 22 is provided with an inner key groove 221 along its axial direction, with one end being connected to the first end face of the outer sleeve 22 and the other end being closed, and the outer wall of the inner sleeve 21 is provided with an outer key groove 211 along its axial direction, with both ends being closed, and a key structure 23 is installed in the outer key groove 211, and the key structure 23 can be axially slidably inserted in the inner key groove 221.

[0040] The double sleeve assembly 2 is composed of two sleeves of different diameters connected by corresponding keyways and key inlays, so as to realize the length-adjustable function of the double sleeve assembly 2 and can be applied to different types of stem lengths (such as valve stem lengths of different types of valves).

[0041] Generally, the outer diameter of the inner sleeve 21 is close to the inner diameter of the outer sleeve 22, and the gap between the inner and outer walls of the two is greater than 0 and less than or equal to 0.5 mm. The inner diameters of the first flange 11, the second flange 12 and the connecting tube 13 are the same and close to the outer diameter of the outer sleeve 22 (the gap between the two is generally about 1 mm), and they fit tightly, effectively preventing the sleeve and the rod body (such as the valve stem) from being stuck or even locked for a long time. The outer diameter of the connecting tube 13 is smaller than the outer diameters of the two flanges, and the connecting tube 13 mainly serves to connect the two flanges.

[0042] In order to facilitate the circumferential fixation of the inner sleeve 21 and the rod body, a long strip-shaped limiting groove 212 is opened along the axial direction of the inner wall of the inner sleeve 21, with one end connected to the first end face of the inner sleeve 21 and the other end closed, and a limiting block is provided on the outer wall of the rod body, and the limiting block can be inserted into the long strip-shaped limiting groove 212.

[0043] In order to facilitate the circumferential fixation of the outer sleeve 22 and the inner sleeve, a plurality of first arc-shaped blocks 222 are circumferentially spaced on the second end surface of the outer sleeve 22, and a plurality of second arc-shaped blocks are circumferentially spaced on the inner wall of the inner sleeve. The plurality of first arc-shaped blocks 222 can be circumferentially staggered and engaged with the plurality of second arc-shaped blocks.

[0044] The specific number of arc-shaped blocks can be determined according to needs. For example, in the present embodiment, the number of first arc-shaped blocks 222 is three and they are evenly arranged circumferentially, the number of second arc-shaped blocks is three and they are evenly arranged circumferentially, and multiple first arc-shaped blocks 222 are circumferentially staggered and plugged with multiple second arc-shaped blocks to form a complete circular ring, thereby achieving circumferential fixation between the two.

[0045] Furthermore, the actuator also includes an actuator housing and a driving mechanism. A first interface flange is provided on the actuator housing for connecting the first flange 11; the inner sleeve is rotatably inserted in the inner hole of the first interface flange, and the driving mechanism is connected to the inner sleeve and can drive the inner sleeve to rotate.

[0046] The main body mechanism also includes a main body shell, on which a second interface flange is provided for connecting the second flange 12; the rod body is rotatably inserted into the inner hole of the second interface flange.

[0047] A plurality of first connection holes 111 are circumferentially opened on the first flange 11, and a plurality of second connection holes 121 are circumferentially opened on the second flange 12, so as to be connected to the interface flange in the actuator and the interface flange in the main body through fasteners respectively.

[0048] The driving mechanism here can be a motor, which is directly connected to the inner sleeve to drive the inner sleeve to rotate; or the driving structure can be a motor, which is connected to the inner sleeve through a transmission assembly to drive the inner sleeve to rotate. The first connecting hole 111 and the second connecting hole 121 are both located on the outer periphery of the connecting tube 13, and the specific number is determined according to needs. For example, in this embodiment, there are four first connecting holes 111 and second connecting holes 121, which are evenly arranged circumferentially.

[0049] The flange assembly device in this embodiment can be applied to any rod rotating device that uses an actuator to drive the rod to rotate to achieve some functions, such as a valve, where the actuator of the valve can drive the valve stem to rotate to achieve the action of the valve core to open and close the valve. The outer shell of the actuator in the rod rotating device is connected to the interface flange on the outer shell of the main mechanism through an interface flange, one end of the rod is rotatably connected to the main mechanism, and the other end is connected to the driving mechanism of the actuator, and the driving structure can drive the rod to rotate to achieve some functions.

[0050] When the actuator in the rod rotating device is damaged and needs to be replaced with a new one, the specifications of the newly purchased actuator may be different from those of the old one. At this time, the flange combination device can be used to effectively connect the new actuator with the old main mechanism and the rod.

[0051] In summary, the flange assembly device in this embodiment has the following advantages:

[0052] (1) It has strong versatility and can realize the matching connection between most types of new actuators and old main mechanisms (such as reusing old valve bodies). It has sensitive action and high reliability.

[0053] (2) Strong adaptability: The double flange assembly 1 is a variable diameter adjustment mechanism that can achieve variable diameters with different outer diameters and can adapt to actuator interface flanges of various diameters. The inner sleeve 21 and the outer sleeve 22 in the double sleeve assembly 2 can adjust the axial length through axial sliding, and can adapt to the valve stem lengths of various types of valves, greatly improving the versatility and flexibility of the connection device.

[0054] (3) Easy installation: The design concept of quick installation and disassembly reduces the complexity and time cost of the installation process.

[0055] (4) Firm connection: The outer sleeve 22 is circumferentially fastened to the inner sleeve on the actuator by a plurality of arc-shaped clamping blocks, and the inner sleeve 21 is circumferentially positioned and fixed to the rod body by the long strip-shaped limiting groove 212 on the inner sleeve 21, thereby achieving the adaptation of the actuator and the valve stem, ensuring the effective and firm connection between the main mechanism (such as the valve body) and the actuator, and improving the overall stability and safety of the system.

[0056] (5) Excellent sealing and lubricating performance: Lubricating oil can be applied between the double-shaft sleeve assembly 2 and the double-flange assembly 1, specifically between the double-shaft sleeve assembly 2 and the first flange 11, the connecting tube 13 and the second flange 12. The high-temperature oil lubrication between the double-shaft sleeve assembly 2 and the double-flange assembly 1 ensures the sealing and lubrication of the connection device during operation, thereby preventing the sleeve from getting stuck during long-term operation.

[0057] (6) The entire flange assembly solves the problems of complex installation, poor sealing, and loose connection when the traditional flange connection device is adapted to actuators of different diameters. Through the cooperation of the double flange assembly 1 and the double shaft sleeve assembly 2, fast installation, good sealing, and stable connection are achieved, which is particularly suitable for the connection of various actuators and pipelines or equipment in the field of industrial automation. The matching problem of the new actuator and the old valve body is solved, and the effective control of the valve actuator is achieved.

[0058] Furthermore, this embodiment also provides a rod rotating device, including an actuator, a main body mechanism having a rod, and the above-mentioned flange assembly device.

[0059] When the actuator in the rod rotating device is damaged and needs to be replaced with a new one, the specifications of the newly purchased actuator may be different from those of the old actuator. At this time, the above-mentioned flange combination device can be used to achieve effective connection between the new actuator and the old main mechanism and rod body, which is more adaptable.

[0060] Furthermore, this embodiment also provides a valve, including an actuator, a valve body with a valve stem, and the above-mentioned flange combination device, the second flange 12 can be detachably connected to the interface flange on the valve body, and the first end of the inner sleeve 21 can be circumferentially fixedly connected to the first end of the valve stem.

[0061] In this embodiment, the above-mentioned rod body rotation device is a valve, the valve body is a reused valve body, the valve stem is a reused valve stem, a valve core is provided in the valve body, and the second end of the valve stem can be rotatably inserted into the inner hole of the interface flange on the valve body and connected to the valve core; the actuator can drive the inner sleeve to rotate, so as to drive the valve stem to rotate through the double-shaft sleeve assembly 2.

[0062] When the actuator in the valve is damaged and needs to be replaced with a new one, the specifications of the newly purchased actuator may be different from those of the old actuator. At this time, the above-mentioned flange combination device can be used to achieve effective connection between the new actuator and the old valve body and the old valve stem (that is, reusing the old valve body and the old valve stem).

[0063] It can be understood that for the same reused valve body, the interface flange size is fixed, the interface flange size of the new actuator is also fixed, and the size of the double flange assembly 1 in the flange assembly device can be matched with it. For different reused valve bodies, the double flange assembly 1 of different sizes can be replaced, and the double sleeve assembly 2 can basically be universal.

[0064] The above are only exemplary embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A flange assembly device for connecting an actuator and a main body having a rod, wherein the actuator can drive the rod to rotate; characterized in that: The flange assembly device comprises: A double flange assembly, comprising a first flange and a second flange which are coaxially spaced and have different outer diameters, wherein the first flange and the second flange are connected via a connecting tube, the first flange is used to be detachably connected to an interface flange in the actuator, and the second flange is used to be detachably connected to an interface flange in the main body; A double-axle sleeve assembly is inserted into the inner holes of the first flange and the second flange; the double-axle sleeve assembly includes an inner sleeve and an outer sleeve that are fixed in a circumferential direction, the first end of the inner sleeve is used to be fixedly connected to the rod body of the main mechanism in a circumferential direction, the second end of the inner sleeve can be axially slidably inserted into the first end of the outer sleeve and the axial length of the double-axle sleeve assembly can be adjusted by sliding, and the second end of the outer sleeve is used to be fixedly connected to the circumferentially rotatable inner sleeve in the actuator.

2. The flange assembly according to claim 1, characterized in that: The inner wall of the outer sleeve is provided with an inner key groove along its axial direction, with one end being connected to the first end surface of the outer sleeve and the other end being closed; the outer wall of the inner sleeve is provided with an outer key groove along its axial direction, with both ends being closed; a key structure is installed in the outer key groove, and the key structure can be axially slidably inserted in the inner key groove.

3. The flange assembly according to claim 1, characterized in that: An elongated limiting groove is provided on the inner wall of the inner sleeve along its axial direction, with one end being connected to the first end surface of the inner sleeve and the other end being closed. A limiting block is provided on the outer wall of the rod body, and the limiting block can be inserted into the elongated limiting groove.

4. The flange assembly as claimed in claim 1, characterized in that: A plurality of first arc-shaped clamping blocks are circumferentially spaced apart on the second end surface of the outer sleeve, and a plurality of second arc-shaped clamping blocks are circumferentially spaced apart on the inner wall of the inner sleeve. The plurality of first arc-shaped clamping blocks can be circumferentially staggeredly engaged with the plurality of second arc-shaped clamping blocks.

5. The flange assembly as claimed in claim 1, characterized in that: The actuator also includes an actuator housing and a driving mechanism. A first interface flange is provided on the actuator housing for connecting the first flange. The inner sleeve is rotatably inserted into the inner hole of the first interface flange. The driving mechanism is connected to the inner sleeve and can drive the inner sleeve to rotate.

6. The flange assembly as claimed in claim 1, characterized in that: The main body mechanism also includes a main body shell, on which a second interface flange is provided for connecting the second interface flange; the rod body is rotatably inserted into the inner hole of the second interface flange.

7. The flange assembly as claimed in claim 1, characterized in that: A plurality of first connection holes are opened circumferentially on the first flange, and a plurality of second connection holes are opened circumferentially on the second flange, so as to be connected to the interface flange in the actuator and the interface flange in the main body through fasteners respectively.

8. A rod rotating device, characterized in that: The invention comprises an actuator, a main body mechanism having a rod body and a flange assembly device as claimed in any one of claims 1 to 7.

9. A valve, characterized in that: It comprises an actuator, a valve body having a valve stem and a flange combination device as described in any one of claims 1 to 7, wherein the second flange can be detachably connected to the interface flange on the valve body, and the first end of the inner sleeve can be circumferentially fixedly connected to the first end of the valve stem.

10. The valve according to claim 9, characterized in that The valve body is a reused valve body, the valve stem is a reused valve stem, a valve core is provided in the valve body, the second end of the valve stem can be rotatably inserted into the inner hole of the interface flange on the valve body and connected to the valve core; the actuator can drive the inner sleeve to rotate, so as to drive the valve stem to rotate through the double-shaft sleeve assembly.

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