Connecting structure of electric actuator for valve

Abstract

The utility model discloses a connecting structure of an electric actuator for a valve, which comprises an actuator main body, a connecting shaft and a valve pipe, the connecting shaft is fixedly mounted at the bottom of the actuator main body, the valve pipe is fixedly mounted at the bottom of the connecting shaft, and sealing gaskets are fixedly mounted on the outer sides of a first flange and a second flange. The movable surface of the outer side of the first flange is sleeved with a first protective sleeve, the surface of the second flange is sleeved with a second protective sleeve, a limiting assembly is arranged on the left side of the first flange, and a positioning assembly is arranged on the right side of the second protective sleeve. Through the arrangement of the limiting groove, the positioning plate and the fixing bolt, the problems that in the using process, a flange used for being connected with the actuator is exposed outside and is convenient to maintain, but the state is generally good, and a screw rod part located between the two flange plates is not easy to carry out anti-corrosion operation and inspection due to the narrow position, so that the service life of the actuator is prolonged are solved. Therefore, the bolt is easy to corrode, and the subsequent disassembly and maintenance work cannot be carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of electric actuators for valves, in particular to a connection structure of an electric actuator for valves. Background Art

[0002] The actuator is an indispensable and important component of the automatic control system. Its function is to receive the control signal sent by the controller and change the size of the controlled medium, so as to maintain the controlled variable at the required value or within a certain range. The actuator can be divided into three categories according to its energy form: pneumatic, hydraulic, and electric. The electric actuator has convenient energy access and rapid signal transmission, but the structure is complex and the explosion-proof performance is poor. Hydraulic actuators are basically not used in chemical, oil refining and other production processes. Its characteristic is large output thrust.

[0003] However, there are some problems with the existing technology:

[0004] At present, a Chinese utility model with publication number CN213271250U discloses an electric actuator for firmly connecting a valve, including a main body, an operating table fixedly installed in the middle of the upper end of the main body, a connecting shaft fixedly installed in the middle of the lower end of the main body, the interior of the connecting shaft is a hollow structure, a valve pipe fixedly installed at the lower end of the connecting shaft, a flange one fixedly installed at the left and right ends of the valve pipe, the flange one is a circular structure, and a pressure sensor is fixedly installed at the upper end of the valve pipe located on the left side of the connecting shaft. The electric actuator for firmly connecting a valve is fastened together with bolts, the flange connection is easy to use, can withstand greater pressure, and makes the connection more stable, and the limit block at the left end of the flange one is inserted into the limit hole, which plays a role of fixing the position so that the holes are aligned, improving the convenience of installation, and solving the problem that it is difficult to manually align the interface with the pipeline during the installation of the electric actuator, resulting in inconvenient installation, time-consuming and labor-intensive.

[0005] Based on the search of the above patents and in combination with the equipment in the prior art, it is found that the above equipment, when applied, can solve the problem that it is difficult to manually align the interface with the pipeline during the installation of traditional electric actuators, resulting in inconvenient, time-consuming and labor-intensive installation, and the working casing in a humid environment is prone to rust or corrosion, affecting the sealing of the actuator, and water vapor enters the interior to cause damage to electronic components, affecting normal use or causing damage to the actuator. However, during use, the flange connected to the actuator is exposed to the outside, which is convenient for maintenance, but is usually in good condition. The screw part between the two flanges is not easy to perform anti-corrosion operations and inspections due to its narrow position. Therefore, this part of the bolt is prone to corrosion, making subsequent disassembly and maintenance work impossible. Utility Model Content

[0006] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a connection structure of an electric actuator for a valve, which has the advantage of protecting the first flange and the second flange, and solves the problem that during use, the flange connected to the actuator is exposed to the outside, which is convenient for maintenance, but the condition is usually good, while the screw part located between the two flanges is not easy to perform anti-corrosion operations and inspections due to its narrow position. Therefore, this part of the bolts is prone to corrosion, making it impossible to carry out subsequent disassembly and maintenance work.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connection structure of an electric actuator for a valve, comprising an actuator body, a connecting shaft and a valve pipe, the connecting shaft is fixedly installed at the bottom of the actuator body, the valve pipe is fixedly installed at the bottom of the connecting shaft, a first flange is fixedly installed on the left side of the valve pipe, a second flange is fixedly installed on the right side of the valve pipe, sealing gaskets are fixedly installed on the outside of the first flange and the second flange, a first protective sleeve is provided on the outer movable surface of the first flange, a second protective sleeve is provided on the surface of the second flange, a limiting component is provided on the left side of the first flange, and a positioning component is provided on the right side of the second protective sleeve.

[0008] As a preferred embodiment of the utility model, the limit assembly includes a limit groove and a limit block, the limit groove is opened on the right side of the first flange, the limit grooves are arranged in four groups and are distributed in a ring shape with equal distances, the limit block is movably installed inside the limit groove, and the right side of the limit block is fixedly connected to the right side of the second flange.

[0009] As a preferred embodiment of the utility model, the positioning assembly includes a positioning plate, a positioning slot and a positioning block. The positioning plate is fixedly installed on the right side of the second protective cover. The positioning plate passes through the first protective cover from left to right. A positioning slot is opened on the top of the positioning plate. The positioning block is movably installed inside the positioning slot.

[0010] As a preferred embodiment of the present invention, a fixing bolt is threadedly connected to the left side of the second flange, and the fixing bolts are arranged in four groups and are distributed in a circular shape with equal distances. The fixing bolts penetrate the first flange from left to right, and a nut is threadedly connected to the other end of the fixing bolt.

[0011] As a preferred embodiment of the utility model, a plug rod is fixedly installed on the right side of the second protective sleeve and two groups are provided, and a slot is opened on the left side of the first protective sleeve, and the slot is plugged and matched with the plug rod.

[0012] As a preferred embodiment of the utility model, a first connecting block is fixedly installed on the bottom of the first protective sleeve, a second connecting block is fixedly installed on the bottom of the second protective sleeve, an insert block is fixedly installed on the right side of the second connecting block, and the insert block is plugged into and matched with the first connecting block.

[0013] As a preferred embodiment of the utility model, an operation box is fixedly installed on the top of the actuator body, a control button is fixedly installed on the top of the operation box, and a pressure sensor is fixedly installed on the left side of the top of the valve tube.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model provides a limit groove, a positioning plate and a fixing bolt, and the first flange and the second flange are installed so that the second flange drives the limit block to move into the limit groove, and the first flange and the second flange are installed and limited by the limit groove and the limit block, which is convenient for installing the first flange and the second flange. The second protective sleeve and the first protective sleeve are installed so that the second protective sleeve drives the positioning plate to penetrate the first protective sleeve, and then the positioning block is inserted into the positioning groove to position the positioning plate and the second protective sleeve. After the first flange is connected to the inner wall of the second flange, the fixing bolt is installed, and then the nut is tightened to install and fix the first flange and the second flange. The problem that the flange connected to the actuator is exposed to the outside during use is convenient for maintenance, but the state is usually good, and the screw part between the two flanges is not easy to perform anti-corrosion operation and inspection due to its narrow position, so this part of the bolts is prone to corrosion, and subsequent disassembly and maintenance work cannot be performed. The utility model has the advantage of protecting the first flange and the second flange.

[0016] 2. The utility model sets a limit assembly on the left side of the first flange, and installs the first flange and the second flange so that the second flange drives the limit block to move into the limit groove. The first flange and the second flange are installed and limited by plugging and matching the limit groove and the limit block, which facilitates the installation of the first flange and the second flange.

[0017] 3. The utility model arranges a positioning component on the right side of the second protective cover, installs the second protective cover and the first protective cover so that the second protective cover drives the positioning plate to penetrate the first protective cover, and then inserts the positioning block into the positioning groove to position the positioning plate and the second protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is an exploded schematic diagram of the first flange of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first protective sleeve of the utility model.

[0021] In the figure: 1. actuator body; 2. connecting shaft; 3. valve tube; 4. first flange; 5. second flange; 6. sealing gasket; 7. first protective cover; 8. second protective cover; 9. limit assembly; 91. limit groove; 92. limit block; 10. positioning assembly; 101. positioning plate; 102. positioning groove; 103. positioning block; 11. fixing bolt; 12. nut; 13. plug rod; 14. slot; 15. first connecting block; 16. second connecting block; 17. plug block; 18. operation box; 19. control button; 20. pressure sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 3 As shown, the utility model provides a connection structure of an electric actuator for a valve, comprising an actuator body 1, a connecting shaft 2 and a valve pipe 3, the connecting shaft 2 is fixedly installed at the bottom of the actuator body 1, the valve pipe 3 is fixedly installed at the bottom of the connecting shaft 2, a first flange 4 is fixedly installed on the left side of the valve pipe 3, a second flange 5 is fixedly installed on the right side of the valve pipe 3, a sealing gasket 6 is fixedly installed on the outside of the first flange 4 and the second flange 5, a first protective sleeve 7 is sleeved on the outer movable surface of the first flange 4, a second protective sleeve 8 is sleeved on the surface of the second flange 5, a limiting component 9 is arranged on the left side of the first flange 4, and a positioning component 10 is arranged on the right side of the second protective sleeve 8.

[0024] refer to Figure 1 and Figure 2 The limiting assembly 9 includes a limiting groove 91 and a limiting block 92. The limiting groove 91 is opened on the right side of the first flange 4. The limiting grooves 91 are provided in four groups and are distributed in a ring shape with equal distances. The limiting block 92 is movably installed inside the limiting groove 91. The right side of the limiting block 92 is fixedly connected to the right side of the second flange 5.

[0025] As a technical optimization solution of the utility model, a limit assembly 9 is arranged on the left side of the first flange 4, and the first flange 4 and the second flange 5 are installed so that the second flange 5 drives the limit block 92 to move into the limit groove 91. The first flange 4 and the second flange 5 are installed and limited by plugging and matching the limit groove 91 and the limit block 92, which facilitates the installation of the first flange 4 and the second flange 5.

[0026] refer to Figure 1 and Figure 2The positioning assembly 10 includes a positioning plate 101, a positioning groove 102 and a positioning block 103. The positioning plate 101 is fixedly installed on the right side of the second protective cover 8. The positioning plate 101 passes through the first protective cover 7 from left to right. A positioning groove 102 is opened on the top of the positioning plate 101, and the positioning block 103 is movably installed inside the positioning groove 102.

[0027] As a technical optimization solution of the utility model, by setting a positioning component 10 on the right side of the second protective cover 8, by installing the second protective cover 8 and the first protective cover 7, the second protective cover 8 drives the positioning plate 101 to penetrate the first protective cover 7, and then the positioning block 103 is inserted into the positioning groove 102 to position the positioning plate 101 and the second protective cover 8.

[0028] refer to Figure 1 and Figure 2 The left side of the second flange 5 is threadedly connected with a fixing bolt 11, and four groups of fixing bolts 11 are arranged and distributed in a circular shape with equal distances. The fixing bolts 11 penetrate the first flange 4 from left to right, and the other end of the fixing bolts 11 is threadedly connected with a nut 12.

[0029] As a technical optimization solution of the utility model, by setting a fixing bolt 11 on the left side of the second flange 5, the first flange 4 is connected to the inner wall of the second flange 5 and then the fixing bolt 11 is installed, and then the nut 12 is tightened to install and fix the first flange 4 and the second flange 5.

[0030] refer to Figure 1 and Figure 2 The second protective sleeve 8 is fixedly provided with an insertion rod 13 on the right side thereof and two groups thereof are provided. The first protective sleeve 7 is provided with a slot 14 on the left side thereof, and the slot 14 is plugged and matched with the insertion rod 13 .

[0031] As a technical optimization solution of the utility model, by setting the insertion rod 13 on the right side of the second protective cover 8, the first protective cover 7 and the second protective cover 8 are positioned by the insertion rod 13 and the slot 14 during the installation process.

[0032] refer to Figure 1 and Figure 2 A first connecting block 15 is fixedly installed at the bottom of the first protective sleeve 7, a second connecting block 16 is fixedly installed at the bottom of the second protective sleeve 8, an inserting block 17 is fixedly installed on the right side of the second connecting block 16, and the inserting block 17 is plugged into and matched with the first connecting block 15.

[0033] As a technical optimization solution of the utility model, a first connecting block 15 is arranged at the bottom of the first protective sleeve 7, and the second connecting block 16 drives the insert block 17 to be inserted into the first connecting block 15 to connect the first protective sleeve 7 and the second protective sleeve 8.

[0034] refer to Figure 1 and Figure 2 An operation box 18 is fixedly installed on the top of the actuator body 1, a control button 19 is fixedly installed on the top of the operation box 18, and a pressure sensor 20 is fixedly installed on the left side of the top of the valve tube 3.

[0035] As a technical optimization solution of the utility model, by setting the operation box 18 on the top of the actuator body 1, the internal pressure and liquid temperature can be detected by the pressure sensor 20 and observed through the display on the top of the operation box 18.

[0036] The working principle and use process of the utility model are as follows: when in use, the first flange 4 and the second flange 5 are installed so that the second flange 5 drives the limit block 92 to move into the limit groove 91, and the first flange 4 and the second flange 5 are installed and limited by plugging and matching the limit groove 91 and the limit block 92, and then the fixing bolts 11 are installed, and then the nuts 12 are tightened to install and fix the first flange 4 and the second flange 5. After the installation of the first flange 4 and the second flange 5 is completed, the first protective sleeve 7 and the second protective sleeve 8 are installed, and the first protective sleeve 7 and the second protective sleeve 8 are positioned by the insertion rod 13 and the slot 14. The plug block 17 is driven by the second connecting block 16 to be inserted into the first connecting block 15 to connect the first protective sleeve 7 and the second protective sleeve 8. The second protective sleeve 8 is moved and installed to drive the positioning plate 101 to penetrate the first protective sleeve 7, and then the positioning block 103 is inserted into the positioning groove 102 to position the positioning plate 101 and the second protective sleeve 8. The internal pressure and liquid temperature can be detected by the pressure sensor 20, and can be observed through the display on the top of the operation box 18.

[0037] In summary, the connection structure of the electric actuator for a valve is provided with a limit groove 91, a positioning plate 101 and a fixing bolt 11, and the first flange 4 and the second flange 5 are installed so that the second flange 5 drives the limit block 92 to move to the inside of the limit groove 91, and the first flange 4 and the second flange 5 are installed and limited by the limit groove 91 and the limit block 92, so that the first flange 4 and the second flange 5 can be easily installed. The second protective sleeve 8 and the first protective sleeve 7 are installed so that the second protective sleeve 8 drives the positioning plate 101 to penetrate the first protective sleeve 7, and then the positioning block 103 is inserted into the first protective sleeve 7. The block is inserted into the positioning groove 102 to position the positioning plate 101 and the second protective sleeve 8. After the first flange 4 is connected to the inner wall of the second flange 5, the fixing bolts 11 are installed, and then the nuts 12 are tightened to install and fix the first flange 4 and the second flange 5. This solves the problem that during use, the flange connected to the actuator is exposed to the outside, which is convenient for maintenance, but is usually in good condition. The screw part between the two flanges is not easy to perform anti-corrosion operations and inspections due to its narrow position. Therefore, this part of the bolts is prone to corrosion, making it impossible to perform subsequent disassembly and maintenance work.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connection structure of an electric actuator for a valve, comprising an actuator body (1), a connecting shaft (2) and a valve pipe (3), characterized in that: The connecting shaft (2) is fixedly mounted on the bottom of the actuator body (1); the valve tube (3) is fixedly mounted on the bottom of the connecting shaft (2); a first flange (4) is fixedly mounted on the left side of the valve tube (3); a second flange (5) is fixedly mounted on the right side of the valve tube (3); sealing gaskets (6) are fixedly mounted on the outer sides of the first flange (4) and the second flange (5); a first protective sleeve (7) is sleeved on the outer movable surface of the first flange (4); a second protective sleeve (8) is sleeved on the surface of the second flange (5); a limiting component (9) is arranged on the left side of the first flange (4); and a positioning component (10) is arranged on the right side of the second protective sleeve (8).

2. The connection structure of an electric actuator for a valve according to claim 1, characterized in that: The limiting assembly (9) comprises a limiting groove (91) and a limiting block (92); the limiting groove (91) is arranged on the right side of the first flange (4); the limiting groove (91) is provided in four groups and is distributed in a ring shape with equal distances; the limiting block (92) is movably installed inside the limiting groove (91); and the right side of the limiting block (92) is fixedly connected to the right side of the second flange (5).

3. The connection structure of an electric actuator for a valve according to claim 1, characterized in that: The positioning assembly (10) comprises a positioning plate (101), a positioning groove (102) and a positioning block (103); the positioning plate (101) is fixedly mounted on the right side of the second protective sleeve (8); the positioning plate (101) passes through the first protective sleeve (7) from left to right; a positioning groove (102) is formed on the top of the positioning plate (101); and the positioning block (103) is movably mounted inside the positioning groove (102).

4. The connection structure of an electric actuator for a valve according to claim 1, characterized in that: The left side of the second flange (5) is threadedly connected with a fixing bolt (11), and the fixing bolts (11) are provided in four groups and are distributed in a circular shape with equal distances. The fixing bolts (11) penetrate the first flange (4) from left to right, and the other end of the fixing bolt (11) is threadedly connected with a nut (12).

5. The connection structure of an electric actuator for a valve according to claim 1, characterized in that: The second protective sleeve (8) is fixedly provided with an insertion rod (13) in two groups on the right side, and the first protective sleeve (7) is provided with a slot (14) on the left side, and the slot (14) is plugged into and matched with the insertion rod (13).

6. The connection structure of an electric actuator for a valve according to claim 1, characterized in that: A first connecting block (15) is fixedly mounted on the bottom of the first protective sleeve (7), a second connecting block (16) is fixedly mounted on the bottom of the second protective sleeve (8), an inserting block (17) is fixedly mounted on the right side of the second connecting block (16), and the inserting block (17) is plug-fitted with the first connecting block (15).

7. The connection structure of an electric actuator for a valve according to claim 1, characterized in that: An operating box (18) is fixedly mounted on the top of the actuator body (1), a control button (19) is fixedly mounted on the top of the operating box (18), and a pressure sensor (20) is fixedly mounted on the left side of the top of the valve tube (3).

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