Valve signal conversion control box

Abstract

The utility model discloses a valve signal conversion control box which effectively prolongs the service life of the device and comprises a first shell and a second shell detachably connected to the rear side of the first shell, the inner side face of the first shell is fixedly connected with two first limiting strips, a circuit board is arranged between the two first limiting strips, and the first limiting strips are fixedly connected with the circuit board. The inner side face of the second shell is fixedly connected with two second limiting strips, a connecting mechanism used for keeping sealing is arranged between the first shell and the second shell, the structure is novel, the conception is ingenious, operation is easy and convenient, the service life of electric appliance elements is effectively prolonged, and the service life of the electric appliance elements is prolonged. The first shell and the second shell are convenient to assemble, the overall sealing performance of the device is improved, and the circuit board is fixed more stably.

Description

Technical Field

[0001] This utility model belongs to the field of signal conversion technology and relates to a valve signal conversion control box. Background Technology

[0002] An electric butterfly valve is a type of valve that uses a circular disc as its opening and closing element, which rotates with the valve stem to open, close, and regulate the fluid passage. The disc of the butterfly valve is installed in the diameter direction of the pipeline. Inside the cylindrical passage of the butterfly valve body, the disc rotates around its axis, with a rotation angle between 0° and 90°. When rotated to 90°, the valve is fully open.

[0003] Most electric butterfly valves on the market today use wiring for signal communication. However, the communication interfaces and protocols used by electric butterfly valves from different manufacturers are not the same. Especially for older electric butterfly valves, it is difficult to find the corresponding parts for replacement and repair if the communication interface is damaged. Therefore, a valve signal conversion control box is needed to convert the valve signals of electric butterfly valves and to adapt to the working environment of electric butterfly valves, thereby increasing the service life of the control box. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a valve signal conversion control box, which effectively solves the issues in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A valve signal conversion control box includes a first housing and a second housing detachably connected to the rear side of the first housing. Two first limiting strips are fixedly connected to the inner side of the first housing, and a circuit board is provided between the two first limiting strips. Two second limiting strips are fixedly connected to the inner side of the second housing. A connection mechanism for maintaining a seal is provided between the first housing and the second housing.

[0007] Preferably, the connecting mechanism includes a protective strip, a first protective pad, and a second protective pad. The protective strip is fixedly connected to the front side of the second housing. The first protective pad and the second protective pad are respectively fixedly connected to the inner and outer sides of the protective strip. A protective groove for accommodating the protective strip is provided on the rear side of the first housing.

[0008] Preferably, the distance between the front and rear sides of the protective strip is less than the depth of the protective groove. The first protective pad and the second protective pad are both made of rubber. The front sides of the first protective pad and the second protective pad abut against the rear side of the first housing, and the rear sides of the first protective pad and the second protective pad abut against the front side of the second housing.

[0009] Preferably, the front end face of the protective strip has a chamfer.

[0010] Preferably, the first housing has a plurality of first connecting rods fixedly connected inside, and the second housing has a plurality of second connecting rods fixedly connected inside. Each of the first connecting rods has a countersunk hole in the middle, and the second connecting rod has a threaded hole on the front side.

[0011] Preferably, each of the first limiting bars has a plurality of first fixing plates fixedly connected to the side away from the first housing.

[0012] Preferably, a plurality of support rods are fixedly connected to the bottom surface of the first housing, and a support block is fixedly connected to the upper side of each support rod.

[0013] Preferably, the front side of the first housing has two first communication interfaces and two first indicator lights fixedly connected to it, and the rear side of the second housing has two second communication interfaces fixedly connected to it. The first communication interfaces, the first indicator lights, and the second communication interfaces are all connected to the circuit board.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model has a first limiting strip and a second limiting strip, which together can clamp the circuit board, making it convenient for workers to assemble.

[0016] 2. This utility model has a connecting mechanism, which can ensure the sealing performance of the first housing and the second housing, thereby increasing the overall service life of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0019] Figure 3 This is a schematic diagram showing the positions of the first connecting rod and the second connecting rod in this utility model.

[0020] Figure 4 This utility model Figure 3 A magnified view of a portion of region A in the middle.

[0021] Figure 5 This is a schematic diagram showing the position of the support rod in this utility model.

[0022] In the diagram: 1. First housing; 2. Second housing; 3. First limiting strip; 4. Circuit board; 5. Second limiting strip; 6. Connecting mechanism; 7. Protective strip; 8. First protective pad; 9. Second protective pad; 10. Protective groove; 11. First connecting rod; 12. Second connecting rod; 13. Countersunk hole; 14. Threaded hole; 15. First fixing plate; 16. Support rod; 17. Support block; 18. First communication interface; 19. First indicator light; 20. Second communication interface. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The following is in conjunction with the appendix Figures 1 to 5 The specific embodiments of this utility model will be described in further detail.

[0025] Depend on Figures 1 to 5 As shown, this utility model includes a first housing 1 and a second housing 2 detachably connected to the rear side of the first housing 1. In order to increase the service life of electrical components, two first limiting strips 3 are fixedly connected to the inner side of the first housing 1, and a circuit board 4 is provided between the two first limiting strips 3. Two second limiting strips 5 are fixedly connected to the inner side of the second housing 2. A connection mechanism 6 for maintaining a seal is provided between the first housing 1 and the second housing 2.

[0026] It should be noted that circuit board 4 refers to integrated circuit board 4, which is used for signal transmission and conversion. This is existing technology, and the specific components required can be determined according to actual needs. This application does not limit the specific electrical components on circuit board 4.

[0027] In use, after the first housing 1 and the second housing 2 cooperate with each other, the circuit board 4 is clamped by two first limiting strips 3 and two second limiting strips 5, which can initially limit the circuit board 4. By setting the connecting mechanism 6, the sealing performance of the inside of the first housing 1 and the second housing 2 can be guaranteed, thereby increasing the service life of the circuit board 4 inside the device.

[0028] Furthermore, by Figures 1 to 5As shown, in order to facilitate the assembly of the first housing 1 and the second housing 2, the connecting mechanism 6 includes a protective strip 7, a first protective pad 8 and a second protective pad 9. The protective strip 7 is fixedly connected to the front side of the second housing 2, and the first protective pad 8 and the second protective pad 9 are respectively fixedly connected to the inner and outer sides of the protective strip 7. A protective groove 10 for accommodating the protective strip 7 is provided on the rear side of the first housing 1.

[0029] Furthermore, by Figures 1 to 5 As shown, in order to increase the overall airtightness of the device, the distance between the front and rear sides of the protective strip 7 is less than the depth of the protective groove 10. The first protective pad 8 and the second protective pad 9 are both made of rubber. The front sides of the first protective pad 8 and the second protective pad 9 abut against the rear side of the first housing 1, and the rear sides of the first protective pad 8 and the second protective pad 9 abut against the front side of the second housing 2. The front end face of the protective strip 7 is chamfered.

[0030] It should be noted that the first protective pad 8, the second protective pad 9, and the protective strip 7 are all made of rubber, and the protective strip 7 and the protective groove 10 are interference fit.

[0031] In use, when the first housing 1 and the second housing 2 are fitted together, the protective strip 7 can enter the protective groove 10 more easily due to the chamfer. Then, the first housing 1 and the second housing 2 are pressed together. At this time, under the action of the pressing force of the first housing 1 and the second housing 2, the first protective pad 8 and the second protective pad 9 will deform, thereby sealing the gap between the first housing 1 and the second housing 2.

[0032] Furthermore, by Figures 1 to 5 As shown, to make the device connection tighter, a plurality of first connecting rods 11 are fixedly connected inside the first housing 1, and a plurality of second connecting rods 12 are fixedly connected inside the second housing 2. Each first connecting rod 11 has a countersunk hole 13 on its front side, and each second connecting rod 12 has a threaded hole 14 on its front side. The countersunk hole 13 and the threaded hole 14 are detachably connected by a countersunk screw. A sealing ring is provided between the first connecting rod 11 and the corresponding second connecting rod 12.

[0033] In use, by setting the first connecting rod and the second connecting rod, the first connecting rod 11 and the second connecting rod 12 can be connected by countersunk screws, thereby pressing the first housing 1 and the second housing 2 together.

[0034] Furthermore, by Figures 1 to 5 As shown, in order to make the circuit board 4 more stable, each first limiting strip 3 is fixedly connected to a plurality of first fixing plates 15 on the side away from the first housing 1; a plurality of support rods 16 are fixedly connected to the bottom surface of the first housing 1, and a support block 17 is fixedly connected to the upper side of each support rod 16; the support block 17 is made of rubber.

[0035] It should be noted that each of the first fixing plates 15 has a first through hole in the middle, and the circuit board 4 has a second through hole corresponding to each first through hole. When installing the circuit board 4, the bolt can be passed through the first through hole and the second through hole, and then the nut and bolt can be used to cooperate, so that the circuit board 4 is limited in the front-back direction and the left-right direction by the bolt. At this time, the support block 17 abuts against the lower side of the circuit board 4, which can support the circuit board 4 in the up-down direction and limit the circuit board 4 in the longitudinal direction.

[0036] Furthermore, by Figures 1 to 5 As shown, in order to transfer valve signals, two first communication interfaces 18 are fixedly connected to the front side of the first housing 1, and two first indicator lights 19 are fixedly connected to the front side of the first housing 1. Two second communication interfaces 20 are fixedly connected to the rear side of the second housing 2, and two second indicator lights are fixedly connected to the rear side of the second housing 2. The first communication interfaces 18, the first indicator lights 19, the second communication interfaces 20, and the second indicator lights are all connected to the circuit board 4.

[0037] It should be noted that the two first communication interfaces 18 are Devicenet and DB9 interfaces, respectively. During use, the control line of the butterfly valve to be converted should be connected to this interface (the specific connection to Devicenet or DB9 can be determined based on the original butterfly valve signal). The two second communication interfaces 20 are DB15 and 24V power interfaces, respectively. The two first indicator lights 19 are both LED indicators. One is connected to the 24V power interface; when the device is powered on, this LED indicator is constantly lit. The other indicator is a communication indicator; when the original valve signal is received and communication is completed, this indicator is constantly lit. If communication is not established, the indicator flashes. The terminals of the above electrical components are all connected to specific interfaces on the circuit board 4 via soldering for signal and power transmission. In this application, no circuit improvements have been made; the connections between the interfaces and the circuit board 4 are all mature circuit structures in the prior art, and will not be described in detail here.

[0038] It should be further explained that the first communication interface 18, the first indicator light 19, the second communication interface 20, the second indicator light and the corresponding first housing 1 or second housing 2 are all provided with sealing structures, such as rubber rings, to ensure the sealing performance of the first housing 1 and the second housing 2.

[0039] When using this utility model, firstly, when fitting the first housing 1 and the second housing 2 together, the protective strip 7 can more easily enter the protective groove 10 due to the chamfering effect. Then, the first housing 1 and the second housing 2 are pressed together. At this time, under the action of the pressing force of the first housing 1 and the second housing 2, the first protective pad 8 and the second protective pad 9 will deform, thereby sealing the gap between the first housing 1 and the second housing 2. After the assembly is completed, the signal connection end of the butterfly valve can be connected to the first communication interface 18 to transfer the signal.

[0040] This utility model has a novel structure, ingenious design, and simple and convenient operation. Through this design, the service life of the device and the electrical components are effectively increased, the assembly of the first housing 1 and the second housing 2 is facilitated, the overall sealing performance of the device is improved, and the circuit board 4 is more stably fixed.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A valve signal conversion control box comprising a first housing, a second housing detachably connected to the rear side of the first housing, characterized in that: The inner side of the first shell is fixedly connected with two first limiting strips, and an electric circuit board is arranged between the two first limiting strips.

2. The valve signal conversion control box according to claim 1, characterized in that: The connecting mechanism comprises a protection strip, a first protection pad and a second protection pad.

3. The valve signal conversion control box according to claim 2, characterized in that: The front and rear sides of the protection strip are spaced apart by a distance less than the depth of the protection groove.

4. The valve signal conversion control box according to claim 2, characterized in that: The front end surface of the protection strip is provided with a chamfer.

5. The valve signal conversion control box according to claim 1, wherein: The interior of the first shell is fixedly connected with a plurality of first connecting rods, and the interior of the second shell is fixedly connected with a plurality of second connecting rods.

6. The valve signal conversion control box according to claim 1, wherein: The side of each first limiting strip away from the first shell is fixedly connected with a plurality of first fixed plates.

7. The valve signal conversion control box according to claim 1, wherein: The inner bottom surface of the first shell is fixedly connected with a plurality of supporting rods, and the upper side of each supporting rod is fixedly connected with a supporting block.

8. The valve signal conversion control box according to claim 1, characterized in that: The front side of the first shell is fixedly connected with two first communication interfaces, the front side of the first shell is fixedly connected with two first indicator lights, the rear side of the second shell is fixedly connected with two second communication interfaces, and the first communication interfaces, the first indicator lights and the second communication interfaces are connected with the electric circuit board.

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