Valve electric execution device with photoelectric counter

Abstract

The utility model relates to a valve electric actuating device with a photoelectric counter, which comprises a valve electric actuating device main body, a travel shaft arranged on the valve electric actuating device main body, a sensing component used for sensing the opening position and the closing position of the travel shaft, and a photoelectric counter arranged on the sensing component, the sensing assembly comprises a photoelectric tube support, a second gear, an infrared transmitting element and an infrared receiving element. According to the valve electric execution device with the photoelectric counter, the phototube support which is specially designed is matched with the infrared transmitting element and the infrared receiving element, the rotating process of the valve electric execution device is converted into pulse numbers, the counting function is achieved, the full-open position and the full-closed position of a valve can be accurately controlled, and the valve electric execution device is convenient to use. Gear faults and microswitch faults which frequently occur to a stroke control component of a conventional valve electric device are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valve electric actuators, in particular to a valve electric actuator with an optical counter. Background Art

[0002] At present, for conventional valve electric devices, mechanical counters are used for stroke control. Microswitches are installed. When it comes to large valves, the working range of a normal mechanical counter (three layers) is insufficient, and a four-layer counter is required. In addition, gear failures and microswitch failures may occur in mechanical counters.

[0003] Therefore, the research and development direction of the stroke control of valve electric devices is to adopt electronic control. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a valve electric actuator with an optical counter, which utilizes the wide working range (from dozens of turns to thousands of turns) and high control precision (the more turns, the higher the precision) of the optical counter to accurately control the fully open position and fully closed position of the valve, so as to solve the problems mentioned in the above background art.

[0005] The utility model is realized through the following technical solutions:

[0006] A valve electric actuator with an optical counter includes a valve electric actuator main body and a stroke shaft arranged on the valve electric actuator main body. A first gear is arranged at the output end of the stroke shaft. It further includes an induction component for sensing the open position and closed position of the stroke shaft. The induction component includes a phototube bracket, a second gear, an infrared emitting element and an infrared receiving element. The phototube bracket is fixed at one end of the valve electric actuator main body. The second gear is rotatably connected to the phototube bracket. The second gear meshes with the first gear. The infrared emitting element and the infrared receiving element are fixed on the phototube bracket and are respectively arranged at the top and bottom edges of the second gear. A gap is formed at the edge of the second gear through which the light of the infrared emitting element can pass.

[0007] The utility model designs two structures of the second gear. In one embodiment, an arc-shaped notch penetrating through its wall thickness is formed at the edge of the second gear;

[0008] In another embodiment, a through hole penetrating through its wall thickness is formed at a position close to the edge of the second gear.

[0009] In order to facilitate the installation and disassembly of the phototube bracket, one end of the phototube bracket is detachably connected to the valve electric actuator main body by screws.

[0010] To facilitate the disassembly, assembly and maintenance of the infrared emission element and the infrared reception element, a set of jacks for embedding the infrared emission element and the infrared reception element are provided at the other end of the phototube bracket.

[0011] In order to adapt to different models of valve electric actuators, in another embodiment of the present invention, a plurality of sets of jacks for embedding the infrared emission element and the infrared reception element are provided at the other end of the phototube bracket.

[0012] Preferably, the rotating shaft is rotatably connected to the phototube bracket through a deep groove ball bearing assembly.

[0013] The beneficial effects of the present invention are as follows: The valve electric actuator with a photoelectric counter cooperates with the infrared emission element and the infrared reception element through a specially designed phototube bracket, converts the rotation process of the valve electric device into pulse numbers, realizes the counting function, can accurately control the fully open position and the fully closed position of the valve, and avoids the gear failures and microswitch failures that often occur in the stroke control components of conventional valve electric devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the valve electric actuator with a photoelectric counter of the present invention;

[0015] Figure 2 is a schematic structural diagram of one embodiment of the second gear of the present invention;

[0016] Figure 3 is a schematic structural diagram of another embodiment of the second gear of the present invention;

[0017] Figure 4 is a schematic structural diagram of another embodiment of the induction component of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following describes in detail the preferred embodiments of the present invention with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0019] Embodiment 1:

[0020] AsFigure 1 A valve electric actuator with an optoelectronic counter as shown, comprising a valve electric actuator main body 1 and a stroke shaft 2 arranged on the valve electric actuator main body 1. The stroke shaft 2 is rotatably connected to the electric actuator main body 1 through a bushing 11. A first gear 21 is fixed to the top output end of the stroke shaft 2. An induction component for sensing the open position and closed position of the stroke shaft 21 is also arranged on the valve electric actuator main body 1.

[0021] Specifically, the induction component includes a phototube bracket 3, a second gear 4, an infrared emission element 31 and an infrared reception element 32. Among them, the phototube bracket 3 is detachably fixed to one side of the top end of the valve electric actuator main body 1 by screws 6. A fixed pin shaft 5 is fixed on the phototube bracket 3. The outer side of the phototube bracket 3 has an upwardly bent mounting portion. The second gear 4 is rotatably connected to the pin shaft 5 of the phototube bracket 3 through a deep groove ball bearing 41 and a shaft seat 42. The second gear 4 meshes with the first gear 21. A set of jacks for the infrared emission element 31 and the infrared reception element 32 to be embedded are opened at the top end and bottom end of the outer side of the phototube bracket 3. The infrared emission element 31 and the infrared reception element 32 are inserted into the jacks and arranged oppositely. A gap through which the light of the infrared emission element 31 can pass is opened at the edge of the second gear 4.

[0022] Among them, the second gear 4 can adopt the structure as Figure 2 shown, and an arc-shaped notch 41 penetrating its wall thickness is opened at its edge. When the arc-shaped notch 41 of the second gear 4 is located between the infrared emission element 31 and the infrared reception element 32, communication between the infrared emission element 31 and the infrared reception element 32 can be realized.

[0023] In addition, the second gear 4 can also adopt the structure as Figure 3 shown, and one or more through holes 42 penetrating its wall thickness are opened near its edge. When the through holes 42 of the second gear 4 are located between the infrared emission element 31 and the infrared reception element 32, communication between the infrared emission element 31 and the infrared reception element 32 can be realized.

[0024] When the first gear 21 drives the second gear 4 to rotate, the tooth part of the second gear 4 can block the transmission between the two optoelectronic elements. When the gap (arc-shaped notch 41 or through hole 42) passes through the two optoelectronic elements, the two optoelectronic elements transmit normally. At this time, the infrared reception element 32 receives a pulse signal. Through the number of pulse signals, the position of the valve electric device opening the valve can be determined. When the valve reaches the fully open position, the control circuit stops the motor to achieve precise control of the "open position" of the valve. Similarly, when the valve reaches the fully closed position, the control circuit stops the motor to achieve precise control of the "closed position" of the valve.

[0025] Embodiment 2:

[0026] As Figure 4 shown, the difference from Embodiment 1 is that multiple groups (two groups) of jacks for embedding the infrared emission element 31 and the infrared reception element 32 are provided on the phototube bracket 3, which can adapt to different models of valve electric actuators. Also, the two groups of infrared emission elements 31 and infrared reception elements 32 can be designed as one group as the open position signal and the other group as the closed position signal.

[0027] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected to", "set up", "provided with", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] Finally, it should be noted that the above embodiments are only specific implementation manners of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any technician familiar with the technical field of the present invention can still modify the technical solutions described in the foregoing embodiments, or easily think of changes, or perform equivalent replacements for some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A valve electric actuator with a photoelectric counter, comprising a valve electric actuator body and a stroke shaft arranged on the valve electric actuator body, wherein the output end of the stroke shaft is provided with a first gear, and characterized in that: It also includes a sensing component for sensing the open position and the closed position of the stroke shaft, the sensing component includes a photoelectric tube bracket, a second gear, an infrared emitting element and an infrared receiving element, the photoelectric tube bracket is fixed to one end of the valve electric actuator body, the second gear is rotatably connected to the photoelectric tube bracket, the second gear is meshed with the first gear, the infrared emitting element and the infrared receiving element are fixed to the photoelectric tube bracket and are respectively arranged at the top and bottom ends of the edge of the second gear, and the edge of the second gear is provided with a gap for the light of the infrared emitting element to pass through.

2. The electric valve actuator with a photoelectric counter according to claim 1, characterized in that: An arc-shaped notch penetrating through the wall thickness of the second gear is formed at the edge of the second gear.

3. The electric valve actuator with a photoelectric counter according to claim 1, characterized in that: A through hole penetrating the wall thickness of the second gear is provided near the edge of the second gear.

4. The electric valve actuator with a photoelectric counter according to claim 1, characterized in that: One end of the photoelectric tube bracket is detachably connected to the main body of the valve electric actuator through a screw.

5. The electric valve actuator with a photoelectric counter according to claim 4, characterized in that: The other end of the photoelectric tube bracket is provided with a group of jacks for the infrared emitting element and the infrared receiving element to be embedded.

6. The electric valve actuator with a photoelectric counter according to claim 4, characterized in that: The other end of the photoelectric tube bracket is provided with a plurality of groups of jacks for the infrared emitting elements and the infrared receiving elements to be embedded.

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