Self-closing valve actuator

Abstract

The utility model belongs to the technical field of self -closing valve, especially a kind of self -closing valve actuator, in view of the stability of the existing self -closing valve actuator is poor in the use process, prone to poor sealing condition, and do not have the problem of alarm function, present and propose the following scheme, it includes shell, air inlet pipe and air outlet pipe, the shell is in and is set with first cavity and symmetrical two second cavities, air inlet pipe and air outlet pipe are all with first cavity fixed communication;Movable plate, the movable plate is provided with two, two the movable plate is all slidingly installed in first cavity, two The movable plate is all fixedly installed with pipe, the utility model can in the use process, can quickly respond to gas pressure change, realize the automatic opening and closing of self -closing valve, can effectively improve the blocking sealing property by opening and closing mechanism and conical rubber sleeve, improve the security of gas use, and have alarm function, simple structure, convenient to use.

Description

Technical Field

[0001] This application relates to the field of self-closing valve technology, and in particular to a self-closing valve actuator. Background Technology

[0002] With the increasing prevalence of urban gasification, gas safety has become a growing concern. Automatic shut-off valves, as an important gas safety device, can automatically close when abnormal gas supply pressure occurs (such as underpressure or overpressure), without the need for electricity or other external power, effectively preventing gas leaks.

[0003] In the existing technology, the self-closing valve actuator has poor stability during use, is prone to poor sealing, and does not have an alarm function. Therefore, we propose a self-closing valve actuator to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of existing self-closing valve actuators, such as poor stability, easy sealing failure, and lack of alarm function during use, and to propose a self-closing valve actuator.

[0005] The self-closing valve actuator provided in this application adopts the following technical solution:

[0006] A self-closing valve actuator, comprising:

[0007] The housing comprises an air inlet pipe and an air outlet pipe. The air inlet pipe and the air outlet pipe are both fixedly connected to the first cavity.

[0008] The movable plate has two movable plates, both of which are slidably installed in the first cavity. Each of the two movable plates is fixedly installed with a through pipe, and each of the two through pipes is fixedly installed with a conical rubber sleeve. The two through pipes are provided with an opening and closing mechanism for opening and closing the air inlet pipe and the air outlet pipe.

[0009] A first battery and a second battery are respectively fixedly installed in two second cavities. A controller is fixedly installed in each of the second cavities, and a pressure and flow sensor is installed in the air intake pipe.

[0010] Furthermore, mounting grooves are provided on the outer side of the movable plate and the inner wall of the first cavity. A first conductive post and a second conductive post are slidably installed in the two mounting grooves respectively. Compression springs are fixedly connected to the outer side of the first conductive post and the second conductive post. One end of each compression spring is fixedly connected to the inner wall of the two mounting grooves respectively. With the setting of the two compression springs, the two compression springs can apply force to the first conductive post and the second conductive post respectively.

[0011] Furthermore, the opening and closing mechanism includes two rotating shafts, each of the two movable plates has a through groove, and each of the two through grooves has a through hole on its bottom inner wall. The two rotating shafts are respectively rotatably installed in the two through holes, and one end of each of the two rotating shafts is fixedly connected to a valve core. The two valve cores are respectively located in the two through pipes. When the rotating shafts rotate, the rotating shafts drive the valve cores to rotate.

[0012] Furthermore, a micro motor is fixedly installed inside the second cavity. The output shaft of the micro motor is fixedly connected to a transmission shaft. Two cams are fixedly connected to the outside of the transmission shaft. The two cams cooperate with two movable plates. When the micro motor is turned on, the transmission shaft drives the two cams to rotate, and the two cams respectively squeeze the two movable plates away from each other.

[0013] Furthermore, a control button is fixedly installed on the top of the housing. The control button is connected to a controller, the controller is connected to a micro motor, and the first battery is connected to the micro motor and the pressure and flow sensor.

[0014] Furthermore, a cylindrical gear is fixedly installed at one end of each of the two rotating shafts, and a rack meshes on each of the two cylindrical gears. One end of each rack is fixedly connected to the inner walls of the two sides of the first cavity.

[0015] Furthermore, an alarm is fixedly installed on the top of the housing. The first conductive post, the alarm, the second battery, and the second conductive post are connected in sequence by wires. The pressure and flow sensor is connected to the controller. When the first conductive post and the second conductive post are pressed into contact, the alarm can be automatically activated to issue a warning.

[0016] Furthermore, a guide shaft is fixedly installed inside the first cavity. The guide shaft is slidably connected to two movable plates. A return spring is sleeved on the outer side of the guide shaft, and the two ends of the return spring are fixedly connected to the outer sides of the two movable plates, respectively.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. In this solution, when the gas flows from the inlet pipe into the first cavity and then through the through pipe to the outlet pipe into the gas-using equipment, the pressure and flow sensor monitors the gas pressure and flow information in real time and transmits the data to the controller. Under normal circumstances, the valve core remains open in the through pipe, allowing the gas to flow normally. The first conductive post and the second conductive post are in a separated state, and the circuit where the alarm is located is in a disconnected state, so no alarm signal will be issued.

[0019] 2. In this solution, when the gas pressure or flow rate in the pipeline is abnormal, the pressure and flow sensor transmits the detected abnormal data to the controller. After judgment, the controller issues a command to make the micro motor work. The micro motor drives the transmission shaft to rotate, and the transmission shaft drives the two cams to rotate. The two cams squeeze the two movable plates away from each other. The two movable plates drive the two pipes and the two conical rubber sleeves away from each other. The two conical rubber sleeves squeeze the openings of the inlet pipe and the outlet pipe respectively, causing the conical rubber sleeves to deform and thus fit tightly against the inner wall of the opening of the inlet pipe and the outlet pipe, achieving a good sealing effect.

[0020] This invention can quickly respond to changes in gas pressure during use, enabling the automatic opening and closing of the self-closing valve. The opening and closing mechanism and the conical rubber sleeve can effectively improve the sealing performance, enhance the safety of gas use, and have an alarm function. It has a simple structure and is easy to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a self-closing valve actuator proposed in this utility model;

[0022] Figure 2 This is a cross-sectional structural schematic diagram of a self-closing valve actuator proposed in this utility model;

[0023] Figure 3 This utility model proposes a self-closing valve actuator. Figure 2 Enlarged structural diagram of section A;

[0024] Figure 4 This utility model proposes a self-closing valve actuator. Figure 2 Enlarged structural diagram of section B;

[0025] Figure 5 This utility model proposes a self-closing valve actuator. Figure 2 An enlarged structural diagram of section C.

[0026] Reference numerals: 1. Housing; 2. Inlet pipe; 3. Outlet pipe; 4. Alarm; 5. Control button; 6. Pressure and flow sensor; 7. First cavity; 8. Second cavity; 9. First battery; 10. Second battery; 11. Controller; 12. Micro motor; 13. Drive shaft; 14. Through pipe; 15. Valve core; 16. Conical rubber sleeve; 17. Movable plate; 18. Through groove; 19. Gear rack; 20. Cylindrical gear; 21. Rotating shaft; 22. Guide shaft; 23. Return spring; 24. First conductive post; 25. Second conductive post; 26. Compression spring; 27. Cam. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1

[0029] Reference Figures 1-5 A self-closing valve actuator includes: a housing 1, an inlet pipe 2 and an outlet pipe 3. The housing 1 has a first cavity 7 and two symmetrical second cavities 8. The inlet pipe 2 and the outlet pipe 3 are both fixedly connected to the first cavity 7.

[0030] There are two movable plates 17, both of which are slidably installed in the first cavity 7. Each movable plate 17 is fixedly installed with a through pipe 14. Each through pipe 14 is fixedly installed with a conical rubber sleeve 16 on its outer side. The conical rubber sleeve 16 is made of high temperature and corrosion resistant rubber material to ensure good sealing performance during long-term use. The two through pipes 14 are provided with an opening and closing mechanism for opening and closing the air inlet pipe 2 and the air outlet pipe 3.

[0031] The first battery 9 and the second battery 10 are respectively fixedly installed in two second cavities 8. A controller 11 is fixedly installed in the second cavity 8. A pressure and flow sensor 6 is installed in the air inlet pipe 2. Both the first battery 9 and the second battery 10 are lithium thionyl chloride 3.6V batteries.

[0032] Reference Figures 2-5The outer side of the movable plate 17 and the inner wall of the first cavity 7 are both provided with mounting grooves. A first conductive post 24 and a second conductive post 25 are slidably mounted in the two mounting grooves, respectively. Compression springs 26 are fixedly connected to the outer sides of both the first conductive post 24 and the second conductive post 25. One end of each compression spring 26 is fixedly connected to the inner wall of the two mounting grooves. Through the arrangement of the two compression springs 26, the two compression springs 26 can respectively apply force to the first conductive post 24 and the second conductive post 25. The opening and closing mechanism includes two rotating shafts 21 on the two movable plates 17. Both are provided with through slots 18, and the bottom inner walls of both through slots 18 are provided with through holes. Two rotating shafts 21 are respectively rotatably installed in the two through holes. One end of each rotating shaft 21 is fixedly connected to a valve core 15. The two valve cores 15 are respectively located in two through pipes 14. When the rotating shafts 21 rotate, the rotating shafts 21 drive the valve cores 15 to rotate. A micro motor 12 is fixedly installed in the second cavity 8. The output shaft of the micro motor 12 is fixedly connected to a transmission shaft 13. Two cams 27 are fixedly connected to the outside of the transmission shaft 13. The two cams 27 cooperate with two movable plates 17. When the micro motor 12 is turned on, the transmission shaft 13 drives the two cams 27 to rotate. The two cams 27 respectively press the two movable plates 17 away from each other. A control button 5 is fixedly installed on the top of the housing 1. The control button 5 is connected to the controller 11. The controller 11 is connected to the micro motor 12. The first battery 9 is connected to the micro motor 12 and the pressure and flow sensor 6. A cylindrical gear 20 is fixedly installed on one end of each of the two rotating shafts 21. A rack 19 meshes on each of the two cylindrical gears 20. One end of each rack 19 is fixedly connected to the inner walls of the two sides of the first cavity 7. An alarm 4 is fixedly installed on the top of the housing 1. The first conductive post 24, the alarm 4, the second battery 10, and the second conductive post 25 are connected in sequence by wires. The pressure and flow sensor 6 is connected to the controller 11. When the first conductive post 24 and the second conductive post 25 are pressed into contact, the alarm 4 can be automatically activated to issue a warning. A guide shaft 22 is fixedly installed in the first cavity 7. The guide shaft 22 is slidably connected to two movable plates 17. A return spring 23 is sleeved on the outside of the guide shaft 22. The two ends of the return spring 23 are fixedly connected to the outside of the two movable plates 17 respectively.

[0033] The implementation principle of the self-closing valve actuator in this embodiment is as follows: During use, the inlet pipe 2 and outlet pipe 3 are connected to an external gas pipeline. When gas flows from the inlet pipe 2 into the first cavity 7, and then through the connecting pipe 14 to the outlet pipe 3 and into the gas-using equipment, the pressure and flow sensor 6 monitors the gas pressure and flow information in real time and transmits the data to the controller 11. Under normal circumstances, the valve core 15 remains open within the connecting pipe 14, allowing normal gas flow. The first conductive post 24 and the second conductive post 25 are separated, and the circuit containing the alarm 4 is disconnected, so no alarm signal is emitted. When the gas pressure or flow in the pipeline becomes abnormal, the pressure and flow sensor 6 transmits the detected abnormal data to the controller 11. After judgment, the controller 11 issues a command to activate the micro motor 12. At this time, the micro motor 12 drives the transmission shaft 13 to rotate, which in turn drives the two cams 27 to rotate. The two cams 27 respectively press the two movable plates 17 away from each other, and the two movable plates 17 respectively drive the two connecting pipes 14 and the two conical rubber sleeves 16 away from each other. Two conical rubber sleeves 16 press against the openings of the air inlet pipe 2 and the air outlet pipe 3 respectively, causing the conical rubber sleeves 16 to deform and thus fit tightly against the inner walls of the openings of the air inlet pipe 2 and the air outlet pipe 3, achieving a good sealing effect. Two rotating shafts 21 and two cylindrical gears 20 move with the movable plate 17. The two cylindrical gears 20 mesh and roll on the two racks 19 respectively. The two cylindrical gears 20 drive the two rotating shafts 21 to rotate, and the two rotating shafts 21 drive the two valve cores 15 to rotate, thereby causing the valve cores 15 to rotate to the closed position. The gas flow is blocked, achieving a self-closing function. As the movable plates 17 move away from each other, the first conductive post 24 and the second conductive post 25 approach each other and squeeze into contact under the elastic force of the compression spring 26, so that the first conductive post 24, the alarm 4, the second battery 10 and the second conductive post 25 form a closed circuit. After the alarm 4 is powered by the second battery 10, it emits an audible and visual alarm signal to remind the user that there is an abnormality in the gas in the pipeline and that the gas supply has been automatically cut off, so that the user can take corresponding inspection and maintenance measures in time to ensure gas safety.

[0034] Example 2

[0035] The difference between this embodiment and Embodiment 1 is that a wireless communication module is fixedly installed on the housing 1. The wireless communication module is connected to the alarm 4. When the alarm 4 issues a warning, the wireless communication module can synchronize information to the mobile terminal in real time, further improving the security and prevention effect.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-closing valve actuator, characterized by: include: The housing (1), the air inlet pipe (2) and the air outlet pipe (3) are provided. The housing (1) has a first cavity (7) and two symmetrical second cavities (8). The air inlet pipe (2) and the air outlet pipe (3) are both fixedly connected to the first cavity (7). Movable plate (17), two movable plates (17) are provided, both movable plates (17) are slidably installed in the first cavity (7), both movable plates (17) are fixedly installed with a through pipe (14), both through pipes (14) are fixedly installed with a conical rubber sleeve (16) on the outside of both through pipes (14), and both through pipes (14) are provided with an opening and closing mechanism, which is used to open and close the air inlet pipe (2) and the air outlet pipe (3); The first battery (9) and the second battery (10) are fixedly installed in two second cavities (8), respectively. A controller (11) is fixedly installed in the second cavity (8), and a pressure flow sensor (6) is installed in the air inlet pipe (2).

2. A valve actuator according to claim 1 wherein: A guide shaft (22) is fixedly installed in the first cavity (7). The guide shaft (22) is slidably connected to two movable plates (17). A return spring (23) is sleeved on the outside of the guide shaft (22). The two ends of the return spring (23) are fixedly connected to the outside of the two movable plates (17) respectively.

3. A valve actuator according to claim 2 wherein "The outer side of the movable plate (17) and the inner wall of the first cavity (7) are provided with mounting grooves. The first conductive post (24) and the second conductive post (25) are slidably installed in the two mounting grooves respectively. The outer side of the first conductive post (24) and the second conductive post (25) are fixedly connected with compression springs (26). One end of the two compression springs (26) is fixedly connected to the inner wall of the two mounting grooves respectively." 4. A valve actuator according to claim 3 wherein: An alarm (4) is fixedly installed on the top of the housing (1). The first conductive post (24), the alarm (4), the second battery (10), and the second conductive post (25) are connected in sequence by wires. The pressure flow sensor (6) is connected to the controller (11).

5. The self-closing valve actuator according to claim 4, characterized in that: The opening and closing mechanism includes two rotating shafts (21), and each of the two movable plates (17) is provided with a through groove (18). The bottom inner wall of each of the two through grooves (18) is provided with a through hole. The two rotating shafts (21) are respectively rotatably installed in the two through holes. One end of each of the two rotating shafts (21) is fixedly connected to a valve core (15). The two valve cores (15) are respectively located in the two through pipes (14).

6. The self-closing valve actuator according to claim 5, characterized in that: Cylindrical gears (20) are fixedly installed at one end of each of the two rotating shafts (21), and racks (19) mesh on each of the two cylindrical gears (20). One end of each rack (19) is fixedly connected to the inner walls of the two sides of the first cavity (7).

7. The self-closing valve actuator according to claim 6, characterized in that: A micro motor (12) is fixedly installed in the second cavity (8). The output shaft of the micro motor (12) is fixedly connected to a transmission shaft (13). Two cams (27) are fixedly connected to the outside of the transmission shaft (13). The two cams (27) cooperate with two movable plates (17).

8. The self-closing valve actuator according to claim 7, characterized in that: A control button (5) is fixedly installed on the top of the housing (1). The control button (5) is connected to the controller (11). The controller (11) is connected to the micro motor (12). The first battery (9) is connected to the micro motor (12) and the pressure and flow sensor (6).

Images