Valve Actuator

Abstract

The utility model provides a valve actuator: comprising a valve body and an actuator body connected to the valve body, a valve core and a valve stem connected to the valve core are arranged in the valve body, a driving unit is arranged in the actuator body, a driving shaft of the driving unit is connected to the valve stem, and is used to drive the valve stem to rotate and drive the valve core to open or close; a first connecting mechanism is arranged at the bottom of the valve body, a second connecting mechanism is arranged at the top of the actuator body, the first connecting mechanism and the second connecting mechanism are detachably connected, and the driving shaft of the driving unit is detachably connected to the valve stem. By arranging the valve body and the actuator body separately, during installation, the valve body can be connected to the pipeline first, and then the actuator body can be connected to the valve body, so that the installation is not limited by the operating space and is simpler and more convenient; when the actuator body fails and needs to be replaced, it is only necessary to disassemble and replace the actuator body without disassembling the valve body, which is not only convenient to disassemble and assemble, but also low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of valve execution, in particular to a valve actuator. Background Art

[0002] The valve actuator is a device that automatically controls the size of the valve switch according to the control signal sent by the controller, thereby controlling the flow of the fluid medium. It is an indispensable and important component in the automatic control system.

[0003] Existing valve actuators usually include two parts: a valve and an actuator. The valve and the actuator are fixedly connected together. The valve has a valve core, and the actuator has a drive assembly. The output shaft of the drive assembly is transmission-connected to the valve core, thereby driving the valve core to open and close.

[0004] Although this type of valve actuator has very precise control over the fluid medium, the valve and actuator are integrated and the actuator is relatively large. When it is installed close to a wall, it is very troublesome to install due to the limited installation space. In addition, when the actuator fails and needs to be disassembled and replaced, it needs to be removed together with the valve. Not only is the operation very troublesome, but the disassembled valve cannot be used anymore, which is very costly. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a valve actuator which is convenient for disassembly, assembly and replacement.

[0006] The technical solution of the utility model is to provide a valve actuator with the following structure:

[0007] It includes a valve body and an actuator body connected to the valve body, wherein a valve core and a valve stem connected to the valve core are arranged in the valve body, and a driving unit is arranged in the actuator body, wherein a driving shaft of the driving unit is connected to the valve stem and is used to drive the valve stem to rotate and drive the valve core to open or close; a first connecting mechanism is arranged at the bottom of the valve body, and a second connecting mechanism is arranged at the top of the actuator body, the first connecting mechanism and the second connecting mechanism are detachably connected, and the driving shaft of the driving unit is detachably connected to the valve stem.

[0008] After adopting the above structure, the valve actuator of the utility model has the following advantages compared with the prior art:

[0009] The utility model arranges the valve body and the actuator body separately, and realizes the detachable connection between the valve body and the actuator body through the first connecting mechanism and the second connecting mechanism. During installation, the valve body can be connected to the pipeline first, and then the actuator body can be connected to the valve body. The installation is not limited by the operating space and is simpler and more convenient. When the actuator body fails and needs to be replaced, it is only necessary to disassemble the actuator body and replace it without disassembling the valve body. It is not only convenient to disassemble and assemble, but also saves costs.

[0010] Preferably, the first connection mechanism comprises a first connection part and a second connection part, wherein the first connection part and the second connection part are respectively provided with a first connection hole and a second connection hole of the same axis; the second connection mechanism comprises a third connection part and a fourth connection part, wherein the third connection part and the fourth connection part are respectively provided with a third connection hole and a fourth connection hole, and the orientation of the third connection hole and the fourth connection hole is the same as that of the first connection hole and the second connection hole;

[0011] The third connecting hole is provided with a fixing bolt, and the connecting end of the fixing bolt passes through the third connecting hole, the first connecting hole, and the fourth connecting hole in sequence, and is threadedly connected with the second connecting hole.

[0012] Preferably, there are two first connection mechanisms, which are symmetrically arranged at two ends of the bottom of the valve body; there are also two second connection mechanisms, which correspond to the two first connection mechanisms one by one, so that the valve body can be more stably connected to the actuator body.

[0013] Preferably, the inner bottom wall of the fourth connecting hole extends downward along the height direction of the fourth connecting portion, so that the fourth connecting hole forms a long strip through hole; the height of the inner top wall of the fourth connecting hole gradually decreases from one end close to the third connecting hole to the other end.

[0014] Since the height of the top wall inside the fourth connecting hole decreases slightly from one end close to the third connecting hole to the other end, the fixing bolt will be slightly pressed downward during the process of passing through the fourth connecting hole, thereby driving the first connecting part and the second connecting part to be pressed downward, thereby firmly pressing the valve body against the actuator body to ensure a tighter connection.

[0015] Preferably, the first connection part and the second connection part are arranged at intervals, so that a first installation groove for accommodating the fourth connection part is formed between the first connection part and the second connection part; the third connection part and the fourth connection part are arranged at intervals, so that a second installation groove for accommodating the first connection part is formed between the third connection part and the fourth connection part. The staggered arrangement of the first connection part, the second connection part, the third connection part and the fourth connection part can make the connection between the valve body and the actuator body more secure.

[0016] Preferably, a positioning groove is provided at the bottom of a side wall of the valve body away from the first connecting portion, and a positioning block matching the positioning groove is provided at the top of the actuator body. The positioning block is accommodated in the positioning groove and fits with the inner wall of the positioning groove.

[0017] Preferably, the outer end of the third connecting hole is provided with a countersunk hole for accommodating the nut of the fixing bolt. The countersunk hole can hide the nut of the fixing bolt to prevent the nut from protruding out of the third connecting hole and affecting the appearance.

[0018] Preferably, the cross section of the valve stem is a rounded rectangular shape, and the end of the drive shaft is provided with a clamping groove matching the shape of the valve stem, and the free end of the valve stem is clamped in the clamping groove. When connecting the valve body to the actuator body, the connection between the valve stem and the drive shaft can be completed by aligning the valve stem with the clamping groove; when disassembling, the valve stem can be pulled out of the clamping groove, which is very convenient for disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a half-section view of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the valve body in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the actuator body in the utility model.

[0023] Figure 5 It is a partial cross-sectional view of the actuator body in the utility model.

[0024] Description of reference numerals:

[0025] 1. Valve body, 11. Valve core, 12. Valve stem, 13. First connecting part, 131. First connecting hole, 14. Second connecting part, 141. Second connecting hole, 15. First mounting groove, 16. Positioning groove, 2. Actuator body, 21. Drive unit, 211. Drive shaft, 212. Clamping groove, 22. Third connecting part, 221. Third connecting hole, 222. Countersunk hole, 23. Fourth connecting part, 231. Fourth connecting hole, 24. Second mounting groove, 25. Positioning block, 3. Fixing bolt. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. At the same time, the terms "first", "second" and the like are only used to distinguish the names of the components, and have no primary or secondary relationship, and therefore cannot be understood as a limitation on the present invention.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown;

[0029] The utility model discloses a valve actuator, which comprises a valve body 1 and an actuator body 2 connected to the valve body 1 .

[0030] A valve core 11 and a valve stem 12 connected to the valve core 11 are disposed in the valve body 1, and a driving unit 21 is disposed in the actuator body 2. A driving shaft 211 of the driving unit 21 is connected to the valve stem 12 for driving the valve stem 12 to rotate and drive the valve core 11 to open and close.

[0031] A first connection mechanism is provided at the bottom of the valve body 1 , and a second connection mechanism is provided at the top of the actuator body 2 . The first connection mechanism is detachably connected to the second connection mechanism, and the driving shaft 211 of the driving unit 21 is detachably connected to the valve stem 12 .

[0032] The utility model sets the valve body 1 and the actuator body 2 separately, and realizes a detachable connection through the first connecting mechanism and the second connecting mechanism. When installing, the valve body 1 can be connected to the pipeline first, and then the actuator body 2 can be connected to the valve body 1. The installation is not limited by the operating space and is simpler and more convenient. When the actuator body 2 fails and needs to be replaced, it is only necessary to disassemble the actuator body 2 and replace it without disassembling the valve body 1. It is not only convenient to disassemble and assemble, but also saves costs. The drive unit 21 can be a drive motor or a pneumatic mechanism. This is a prior art and is not described in detail.

[0033] The first connection mechanism includes a first connection part 13 and a second connection part 14, and a first connection hole 131 and a second connection hole 141 are respectively provided with coaxial lines on the first connection part 13 and the second connection part 14. The second connection mechanism includes a third connection part 22 and a fourth connection part 23, and a third connection hole 221 and a fourth connection hole 231 are respectively provided on the third connection part 22 and the fourth connection part 23, and the directions of the third connection hole 221 and the fourth connection hole 231 are the same as those of the first connection hole 131 and the second connection hole 141.

[0034] The third connection hole 221 is provided with a fixing bolt 3 , and the connection end (ie, the threaded end) of the fixing bolt 3 passes through the third connection hole 221 , the first connection hole 131 , and the fourth connection hole 231 in sequence, and is threadedly connected to the second connection hole 141 .

[0035] There are two first connection mechanisms, which are symmetrically arranged at the two ends of the bottom of the valve body 1; there are also two second connection mechanisms, which correspond to the two first connection mechanisms one by one, so that the valve body 1 can be more stably connected to the actuator body 2.

[0036] The inner bottom wall of the fourth connection hole 231 extends downward along the height direction of the fourth connection portion 23, so that the fourth connection hole 231 forms a long strip through hole; the height of the inner top wall of the fourth connection hole 231 gradually decreases from one end close to the third connection hole 221 to the other end.

[0037] Since the height of the top wall inside the fourth connecting hole 231 gradually decreases slightly from one end close to the third connecting hole 221 to the other end, when the fixing bolt 3 passes through the fourth connecting hole 231, the fixing bolt 3 will also be slightly pressed downward, thereby driving the first connecting part 13 and the second connecting part 14 connected thereto to be pressed downward, thereby pressing the valve body 1 tightly against the actuator body 2 to ensure a tighter connection.

[0038] The first connection part 13 and the second connection part 14 are arranged at intervals, so that a first installation groove 15 for accommodating the fourth connection part 23 is formed between the first connection part 13 and the second connection part 14; the third connection part 22 and the fourth connection part 23 are arranged at intervals, so that a second installation groove 24 for accommodating the first connection part 13 is formed between the third connection part 22 and the fourth connection part 23. The staggered arrangement of the first connection part 13, the second connection part 14, the third connection part 22 and the fourth connection part 23 can make the connection between the valve body 1 and the actuator body 2 more secure.

[0039] A positioning groove 16 is provided at the bottom of a side wall of the valve body 1 away from the first connecting portion 13, and a positioning block 25 matching the positioning groove 16 is provided at the top of the actuator body 2. The positioning block 25 is accommodated in the positioning groove 16 and fits with the inner wall of the positioning groove 16, so as to play a positioning role when the valve body 1 is connected to the actuator body 2.

[0040] The outer end of the third connecting hole 221 is provided with a countersunk hole 222 for accommodating the nut of the fixing bolt 3, thereby hiding the nut of the fixing bolt 3 and preventing the nut from protruding out of the third connecting hole 221 and affecting the appearance.

[0041] The cross section of the valve stem 12 is a rounded rectangular shape, and the end of the drive shaft 211 is provided with a clamping groove 212 matching the shape of the valve stem 12, and the free end of the valve stem 12 is clamped in the clamping groove 212. When the valve body 1 is connected to the actuator body 2, the valve stem 12 and the drive shaft 211 can be connected by aligning the valve stem 12 with the clamping groove 212; when disassembling, the valve stem 12 can be pulled out of the clamping groove 212, which is very convenient for disassembly.

[0042] The above description is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A valve actuator, comprising a valve body (1) and an actuator body (2) connected to the valve body (1), wherein the valve body (1) is provided with a valve core (11) and a valve stem (12) connected to the valve core (11), wherein the actuator body (2) is provided with a driving unit (21), wherein a driving shaft (211) of the driving unit (21) is connected to the valve stem (12) and is used to drive the valve stem (12) to rotate and drive the valve core (11) to open or close; characterized in that: A first connecting mechanism is provided at the bottom of the valve body (1), and a second connecting mechanism is provided at the top of the actuator body (2); the first connecting mechanism and the second connecting mechanism are detachably connected, and the driving shaft (211) of the driving unit (21) is detachably connected to the valve stem (12).

2. The valve actuator according to claim 1, characterized in that: The first connection mechanism comprises a first connection part (13) and a second connection part (14), wherein the first connection part (13) and the second connection part (14) are respectively provided with a coaxial first connection hole (131) and a second connection hole (141); the second connection mechanism comprises a third connection part (22) and a fourth connection part (23), wherein the third connection part (22) and the fourth connection part (23) are respectively provided with a third connection hole (221) and a fourth connection hole (231), wherein the orientations of the third connection hole (221) and the fourth connection hole (231) are the same as the orientations of the first connection hole (131) and the second connection hole (141); A fixing bolt (3) is provided on the third connecting hole (221), and a connecting end of the fixing bolt (3) passes through the third connecting hole (221), the first connecting hole (131), and the fourth connecting hole (231) in sequence, and is threadedly connected to the second connecting hole (141).

3. The valve actuator according to claim 2, characterized in that: There are two first connection mechanisms, which are symmetrically arranged at the two ends of the bottom of the valve body (1); there are also two second connection mechanisms, which correspond one to one with the two first connection mechanisms respectively.

4. The valve actuator according to claim 2 or 3, characterized in that: The inner bottom wall of the fourth connection hole (231) extends downward along the height direction of the fourth connection portion (23), so that the fourth connection hole (231) forms a long strip-shaped through hole; the height of the inner top wall of the fourth connection hole (231) gradually decreases from one end close to the third connection hole (221) to the other end.

5. The valve actuator according to claim 4, characterized in that: The first connecting portion (13) and the second connecting portion (14) are arranged at intervals, so that a first mounting groove (15) for accommodating the fourth connecting portion (23) is formed between the first connecting portion (13) and the second connecting portion (14); the third connecting portion (22) and the fourth connecting portion (23) are arranged at intervals, so that a second mounting groove (24) for accommodating the first connecting portion (13) is formed between the third connecting portion (22) and the fourth connecting portion (23).

6. The valve actuator according to claim 5, characterized in that: A positioning groove (16) is provided at the bottom of a side wall of the valve body (1) away from the first connecting portion (13), and a positioning block (25) matching the positioning groove (16) is provided at the top of the actuator body (2). The positioning block (25) is accommodated in the positioning groove (16) and fits with the inner wall of the positioning groove (16).

7. The valve actuator according to claim 6, characterized in that: The outer end of the third connecting hole (221) is provided with a countersunk hole (222) for accommodating a nut of the fixing bolt (3).

8. The valve actuator according to claim 1, characterized in that: The cross section of the valve stem (12) is in the shape of a rounded rectangle, the end of the drive shaft (211) is provided with a clamping groove (212) matching the shape of the valve stem (12), and the free end of the valve stem (12) is clamped in the clamping groove (212).

Images