An automatic regulating escape device pressure reducing valve

Abstract

The present invention discloses an automatically adjustable escape pressure reducing valve, comprising a valve body sleeve, a movable piston, a telescopic spring, a sensing component, an air inlet pipe, an exhaust pipe and a closing plate. When the present invention is in use, according to different requirements, a preset value of pressure can be input through a controller. When the movable piston is impacted by the high-pressure airflow and moves toward the inside of the valve body sleeve, the movable piston squeezes the telescopic spring, and the telescopic spring presses the pressure sensor inward. The pressure sensor is subjected to pressure. When the pressure value reaches the preset value, the pressure sensor transmits a driving signal to the controller, and the controller drives the rotating motor to start running. Then the rotating motor controls the positioning column to move toward the direction of the movable piston, and presses the movable piston to move outward until the pressure sensor reaches the preset value, and the rotating motor stops driving. In this way, the present invention realizes automatic control and is convenient to use.

Description

Technical Field

[0001] The invention belongs to fire-fighting underwater first aid equipment, and in particular relates to an automatic regulating type escape device pressure reducing valve. Background Art

[0002] Air respirators are personal respiratory protection devices for personnel working in fire, dust, harmful and toxic gases, underwater, and escapees. They have a wide range of uses and can be used for underwater emergency rescue. The air supply method of air respirators is generally that the gas in the high-pressure gas cylinder is reduced in pressure by a pressure reducing valve and then supplied to the user through an air pipe and a mask. The pressure reducing valve is one of the main components in the entire air supply system. The internal structure of the existing pressure reducing valve is a structure in which a spring presses a piston, and the vent is blocked by the piston. When impacted by a high-pressure airflow, the piston is ejected, and the high-pressure airflow is adjusted to a low-pressure airflow through the cooperation of the piston and the vent, thereby achieving operation. However, according to different usage requirements and the use of different groups of people, the pressure of the input airflow is different, so reasonable and appropriate adjustment is required. The existing methods generally do not have an adjustment structure or some structures have a structure for artificial adjustment, which makes the adjustment less convenient. For this reason, it is necessary to upgrade the transmission pressure reducing valve structure to achieve automatic adjustment of the output airflow pressure intensity and improve the convenience of use. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention solves the problem of providing an automatically adjustable escape device pressure reducing valve which is easy to use and can automatically adjust the airflow pressure intensity.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] An automatic regulating escape pressure reducing valve comprises a valve body sleeve, a movable piston, a telescopic spring, a sensing component, an air inlet pipe, an exhaust pipe and a closing plate; the air inlet pipe and the exhaust pipe are respectively installed at the two ends of the valve body sleeve; a movable piston is arranged inside one end of the valve body sleeve; the inner end of the movable piston is connected to the telescopic spring; a closing plate is installed inside the other end of the valve body sleeve; a ventilation opening is arranged on the closing plate; the sensing component comprises a pressure sensor, a controller, a rotating motor and a positioning column; a pressure sensor is installed in the middle of the closing plate; a telescopic spring is installed between the pressure sensor and the movable piston, and the end of the telescopic spring presses against the pressure sensor; the upper and lower ends of the closing plate Rotating motors are installed on both sides respectively; the outer ends of the rotating motors drive the connected positioning columns respectively; the controller is installed on the outside of one side of the valve body sleeve; the pressure sensor, the controller, and the rotating motor are connected through signal drive; the moving piston is impacted by the high-pressure airflow and moves toward the inside of the valve body sleeve, the moving piston squeezes the telescopic spring, the telescopic spring presses the pressure sensor inward, the pressure sensor is subjected to pressure, when the pressure value reaches the preset value, the pressure sensor transmits the driving signal to the controller, the controller drives the rotating motor to operate, the rotating motor controls the positioning column to move toward the moving piston, and presses the moving piston to move outward until the pressure sensor reaches the preset value, and the rotating motor stops driving.

[0006] Furthermore, the outer end of the rotating motor is connected to a driving threaded cylinder through a rotating shaft, and the internal thread of the driving threaded cylinder is screwed onto the positioning column; a limiting movement rod is respectively provided on the outer side of the outer end of the positioning column; a limiting sliding groove is provided on the inner side wall of the valve body sleeve; the outer end of the limiting movement rod is slidably engaged with the limiting sliding groove.

[0007] Furthermore, the inner end of the movable piston is connected with a movable disk, and the movable disk is slidably engaged with the limiting sliding groove through an engaging column; the positioning column achieves pressing and positioning of the movable piston by pressing the movable disk.

[0008] Furthermore, the inner end of the movable piston is fixedly connected to the outer side of the movable disk via a connecting rod.

[0009] Furthermore, a connecting groove is provided in the middle of the inner side of the movable piston; and the outer end of the telescopic spring is connected to the connecting groove of the movable piston.

[0010] Furthermore, a conical annular section with a small outer end and a large inner end is provided inside one end of the valve body sleeve; the movable piston is an annular conical structure with a small outer end and a large inner end; the movable piston is pressed against the conical annular section through the pressing seal of the telescopic spring.

[0011] Furthermore, a connecting ring body is provided around the other end of the valve body sleeve, the connecting ring body is located around the outer side of the closing plate, and a filter element is installed inside the connecting ring body; a screw-on cover is screwed around the outer end of the connecting ring body; an exhaust pipe is installed in the middle of the outer end of the screw-on cover.

[0012] Furthermore, the controller is provided with a human-computer interaction interface, and a preset pressure value of the pressure sensor is input.

[0013] The beneficial effects of the present invention are as follows:

[0014] When the present invention is in use, according to different needs, a preset value of pressure can be input through the controller. When the moving piston is impacted by the high-pressure airflow and moves toward the inside of the valve body sleeve, the moving piston squeezes the telescopic spring, and the telescopic spring presses the pressure sensor inward. The pressure sensor is subjected to pressure. When the pressure value reaches the preset value, the pressure sensor transmits a driving signal to the controller, and the controller drives the rotating motor to start running. Then the rotating motor controls the positioning column to move in the direction of the moving piston, and presses the moving piston to move outward until the pressure sensor reaches the preset value, and the rotating motor stops driving. The reason why the positioning column needs to push the moving piston outward to reach the preset pressure value is that the positioning column is driven by the rotating motor to move toward the moving piston. At this time, the moving piston is still moving inward under the impact of the external high-pressure airflow. Therefore, when the positioning column contacts the moving piston, the moving piston has exceeded the preset pressure value. For this reason, the moving piston needs to be pushed outward. The present invention realizes automatic control and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the longitudinal cross-sectional structure of the present invention.

[0016] Figure 2 For the present invention Figure 1 Schematic diagram of the structure in which the middle positioning column presses against the moving piston to perform positioning.

[0017] Figure 3 It is a schematic diagram of the structure of the splitting of the present invention.

[0018] Figure 4 For the present invention Figure 1 The enlarged structural diagram in the middle.

[0019] Figure 5 For the present invention Figure 2 The enlarged structural diagram in the middle. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] like Figures 1 to 5As shown, an automatic regulating escape pressure reducing valve comprises a valve body sleeve 1, a movable piston 2, a telescopic spring 3, a sensing component 4, an air inlet pipe 5, an exhaust pipe 6 and a closing plate 7; the air inlet pipe 5 and the exhaust pipe 6 are respectively installed at both ends of the valve body sleeve 1; a movable piston 2 is arranged inside one end of the valve body sleeve 1; the inner end of the movable piston 2 is connected to the telescopic spring 3; a closing plate 7 is installed inside the other end of the valve body sleeve 1; a ventilation opening 71 is arranged on the closing plate 7; the sensing component 4 comprises a pressure sensor 41, a controller 42, a rotating motor 43 and a positioning column 44; a pressure sensor 41 is installed in the middle of the closing plate 7; a telescopic spring 3 is installed between the pressure sensor 41 and the movable piston 2, and the end of the telescopic spring 3 is pressed against the pressure sensor 41; the upper and lower ends of the closing plate 7 Rotating motors 43 are installed on both sides respectively; the outer ends of the rotating motors 43 drive the connected positioning columns 44 respectively; the controller 42 is installed on the outside of one side of the valve body sleeve 1; the pressure sensor 41, the controller 42, and the rotating motor 43 are connected by signal drive; the moving piston 2 is impacted by the high-pressure airflow and moves toward the inside of the valve body sleeve 1, the moving piston 2 squeezes the telescopic spring 3, the telescopic spring 3 presses the pressure sensor 41 inward, the pressure sensor 41 is subjected to pressure, when the pressure value reaches the preset value, the pressure sensor 41 transmits the driving signal to the controller 42, the controller 42 drives the rotating motor 43 to operate, the rotating motor 43 controls the positioning column 44 to move toward the moving piston 2, and presses the moving piston 2 to move outward until the pressure sensor 41 reaches the preset value and the rotating motor 43 stops driving.

[0022] like Figures 1 to 5 As shown, in order to drive the positioning column 44 to translate by the rotating motor 43, further, the outer end of the rotating motor 43 is connected to a driving threaded barrel 432 through a rotating shaft 431, and the internal thread of the driving threaded barrel 432 is screwed to the positioning column 44; the outer side of the outer end of the positioning column 44 is respectively provided with a limiting moving rod 441; the inner side wall of the valve body sleeve 1 is provided with a limiting slide groove 11; the outer end of the limiting moving rod 441 is slidably engaged with the limiting slide groove 11. In order to improve the positioning performance of the positioning column 44 on the moving piston 2, further, the inner end of the moving piston 2 is connected to a moving disk 21, and the moving disk 21 is slidably engaged with the limiting slide groove 11 through a clamping column 211; the positioning column 44 realizes the pressing and positioning of the moving piston 2 by pressing the moving disk 21. Further, the inner end of the moving piston 2 is fixedly connected to the outer side of the moving disk 21 through a connecting rod 22. Furthermore, a connecting groove 23 is provided in the middle of the inner side of the movable piston 2 ; the outer end of the telescopic spring 3 is connected to the connecting groove 23 of the movable piston 2 .

[0023] like Figures 1 to 5As shown, in order to improve the sealing performance of the abutment and the adjustability of the annular gap size for ventilation, further, a conical annular surface section 12 with a small outer end and a large inner end is provided inside one end of the valve body sleeve 1; the movable piston 2 is an annular cone structure with a small outer end and a large inner end; the movable piston 2 is pressed against the conical annular surface section 12 by the pressing seal of the telescopic spring 3.

[0024] like Figures 1 to 5 As shown, in order to filter the incoming gas, further, the other end of the valve body sleeve 1 is provided with a connecting ring body 13 around the periphery, the connecting ring body 13 is located around the outer side of the closing plate 7, and the connecting ring body 13 is provided with a filter element 8 inside; the outer end of the connecting ring body 13 is screwed with a screw cover 131 around the periphery; the exhaust pipe 6 is installed in the middle of the outer end of the screw cover 131. In order to facilitate control and adjustment, further, the controller 42 is provided with a human-machine interaction interface, and the preset pressure value of the pressure sensor 41 is input.

[0025] When the present invention is in use, according to different needs, a preset value of pressure can be input through the controller 42. When the mobile piston 2 is impacted by the high-pressure airflow and moves toward the inside of the valve body sleeve 1, the mobile piston 2 squeezes the telescopic spring 3, and the telescopic spring 3 presses the pressure sensor 41 inwardly. The pressure sensor 41 is subjected to pressure. When the pressure value reaches the preset value, the pressure sensor 41 transmits a driving signal to the controller 42, and the controller 42 drives the rotating motor 43 to start running. Then the rotating motor 43 controls the positioning column 44 to move toward the mobile piston 2, and presses the mobile piston 2 to move outward until the pressure sensor 41 reaches the preset value and the rotating motor 43 stops driving. Here, the positioning column 44 needs to push the mobile piston 2 outward to reach the preset pressure value because when the positioning column 44 is driven by the rotating motor 43 to move toward the mobile piston 2, the mobile piston 2 is still moving inward under the impact of the external high-pressure airflow. Therefore, when the positioning column 44 contacts the mobile piston 2, the mobile piston 2 has exceeded the preset pressure value. For this reason, the mobile piston 2 needs to be pushed outward. The present invention realizes automatic control and is convenient to use.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic regulating escape device pressure reducing valve, characterized in that: The closure plate is provided with a cam which is provided at the bottom of the valve body and a cam which is provided at the bottom of the valve body. The cam is provided with a plurality of cams which are connected to the cam and a plurality of cams are provided at the bottom of the valve body. The cam is provided with a plurality of cams which are connected to the cam and a plurality of cams are provided at the bottom of the valve body. The pressure sensor is subjected to pressure. When the pressure value reaches the preset value, the pressure sensor transmits a driving signal to the controller, and the controller drives the rotating motor to operate. The rotating motor controls the positioning column to move in the direction of the moving piston, and presses the moving piston to move outward until the pressure sensor reaches the preset value, and the rotating motor stops driving; the outer end of the rotating motor is connected with a driving threaded cylinder through a rotating shaft, and the internal thread of the driving threaded cylinder is screwed with the positioning column; the outer side of the outer end of the positioning column is respectively provided with a limit moving rod; the inner side wall of the valve body sleeve is provided with a limit sliding groove; the outer end of the limit moving rod is slidably engaged with the limit sliding groove; the inner end of the moving piston is connected with a moving disk, and the moving disk is slidably engaged with the limiting sliding groove through the clamping column; the positioning column realizes the pressing and positioning of the moving piston by pressing the moving disk; a conical annular surface section with a small outer end and a large inner end is provided inside one end of the valve body sleeve; the moving piston is an annular cone structure with a small outer end and a large inner end; the moving piston is pressed on the conical annular surface section through the pressing seal of the telescopic spring.

2. The automatic regulating escape device pressure reducing valve according to claim 1, characterized in that: The inner end of the movable piston is fixedly connected to the outer side of the movable disk through a connecting rod.

3. The automatic regulating escape device pressure reducing valve according to claim 1, characterized in that: A connecting groove is arranged in the middle of the inner side of the movable piston; and the outer end of the telescopic spring is connected to the connecting groove of the movable piston.

4. The automatic regulating escape device pressure reducing valve according to claim 1, characterized in that: A connecting ring body is arranged around the other end of the valve body sleeve, and the connecting ring body is located around the outer side of the closing plate, and a filter element is installed inside the connecting ring body; a screw-on cover is screwed around the outer end of the connecting ring body; and an exhaust pipe is installed in the middle of the outer end of the screw-on cover.

5. The automatic regulating escape device pressure reducing valve according to claim 1, characterized in that: The controller is provided with a human-computer interaction interface and inputs a preset pressure value of the pressure sensor.

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