Diaphragm type executing mechanism with adjustable exhaust speed

Abstract

The invention belongs to the technical field of valves, and particularly relates to a diaphragm type actuating mechanism with adjustable exhaust speed, which comprises an adjusting bolt, a pressure regulator, a spring, an upper diaphragm capsule, a diaphragm and a lower diaphragm capsule, the diaphragm is located between the upper diaphragm capsule and the lower diaphragm capsule, the two ends of the diaphragm are fixedly connected with the upper diaphragm capsule and the lower diaphragm capsule, an inner cavity is formed between the upper diaphragm capsule and the lower diaphragm capsule, and the middle part of the diaphragm is located in the inner cavity; the spring and the spring seat are located in the spring cavity, the spring seat is fixedly connected to the diaphragm, one end of the spring is fixedly connected to the spring seat, and the other end is fixedly connected to the top end of the inner side of the upper diaphragm capsule; a vent hole communicated with the spring cavity is formed in the side wall of the upper diaphragm capsule, the pressure regulator is matched with the vent hole, and the pressure regulator is detachably connected with the vent hole; and the adjusting bolt is matched with the pressure regulator and is detachably connected with the pressure regulator. The air inlet speed and the air outlet speed of the spring cavity can be adjusted, the action speed of the driving rod can be adjusted, and finally the buffering purpose is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to a diaphragm-type actuator with adjustable exhaust speed. Background Art

[0002] The diaphragm actuator is a pneumatic actuator that is mainly used to provide driving force for straight-stroke valves.

[0003] The diaphragm actuator has two working processes when it is working: 1. Compressed air is introduced to overcome the spring force; 2. When exhausting, the spring force pushes the drive rod to reset. Through the above two processes, the reciprocating motion of the drive rod is realized to provide driving force.

[0004] However, in the prior art, due to factors such as excessively high compressed air pressure and too-fast spring force reset, the driving device may move too fast and fail to meet the operating conditions, or even cause the diaphragm to tear due to impact.

[0005] Therefore, it is urgent to design a diaphragm actuator with adjustable exhaust speed to solve the above technical problems. Summary of the Invention

[0006] The object of the present invention is to provide a diaphragm actuator with adjustable exhaust speed. The diaphragm actuator adjusts the intake and exhaust speeds of the spring chamber by adjusting the depth of the bolt screwed into the pressure regulator, thereby adjusting the air pressure in the spring chamber of the diaphragm actuator structure, thereby adjusting the movement speed of the drive rod and ultimately achieving the purpose of buffering.

[0007] The technical solution for achieving the purpose of the present invention is as follows:

[0008] The diaphragm actuator of the present invention has adjustable exhaust speed, and the diaphragm actuator comprises: an adjusting bolt, a pressure regulator, a spring, an upper diaphragm box, a diaphragm, and a lower diaphragm box; the diaphragm is located between the upper diaphragm box and the lower diaphragm box, the two ends of the diaphragm are fixedly connected to the upper diaphragm box and the lower diaphragm box, an inner cavity is formed between the upper diaphragm box and the lower diaphragm box, and the middle part of the diaphragm is located in the inner cavity; the spring and the spring seat are located in the spring cavity, the spring seat is fixedly connected to the diaphragm, one end of the spring is fixedly connected to the spring seat, and the other end is fixedly connected to the top end of the inner side of the upper diaphragm box; the side wall of the upper diaphragm box is provided with an air vent which passes through the spring cavity, the pressure regulator matches the vent, and the pressure regulator is detachably connected to the vent; the adjusting bolt matches the pressure regulator, and the adjusting bolt is detachably connected to the pressure regulator, and the exhaust and intake speeds in the spring cavity are adjusted by controlling the depth of the adjusting bolt screwed into the pressure regulator, so as to adjust the air pressure in the spring cavity of the diaphragm actuator and adjust the action speed of the drive rod.

[0009] The vent hole is provided with an internal thread, the outer periphery of the pressure regulator is provided with an external thread, and the pressure regulator is detachably connected to the vent hole of the upper membrane box through the thread.

[0010] The inner circumference of the voltage regulator is provided with an internal thread, the adjusting bolt is provided with an external thread, and the adjusting bolt and the voltage regulator are detachably connected through the thread.

[0011] The voltage regulator is provided with a plurality of exhaust holes penetrating the side wall of the voltage regulator in the circumferential direction, which are used for exhausting or taking in air when the diaphragm actuator is in action.

[0012] A pressure regulator cone surface is provided on the inner periphery of the pressure regulator valve seat, and an adjusting bolt cone surface is provided on the head of the adjusting bolt that matches the pressure regulator cone surface. When the exhaust or intake speed needs to be adjusted, the exhaust or intake speed can be adjusted by rotating the adjusting bolt to control the distance between the adjusting bolt cone surface and the pressure regulator cone surface.

[0013] The upper membrane box, the membrane sheet and the lower membrane box are fixedly connected by bolts and nuts.

[0014] The beneficial technical effects of the present invention are:

[0015] The present invention provides a diaphragm-type actuator with adjustable exhaust speed. The valve seat of a pressure regulator is designed to resemble the regulator's tapered surface. The adjusting bolt's threaded connection with the regulator's threaded connection is designed, and the head of the adjusting bolt's tapered surface is designed to have the same angle as the regulator's valve seat. By controlling the depth of the adjusting bolt's insertion into the regulator and the distance between the adjusting bolt's tapered surface and the regulator's tapered surface, the exhaust and intake speeds of the spring chamber are adjusted. Ultimately, the air pressure in the actuator's spring chamber is adjusted to vary the speed of the drive rod's movement, achieving a buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a diaphragm-type actuator with adjustable exhaust speed provided by the present invention;

[0017] Figure 2 This is a partial enlarged view of a diaphragm-type actuator structure pressure regulator with adjustable exhaust speed provided by the present invention;

[0018] Figure 3 This is a schematic diagram of a fully closed state of an adjusting bolt in a diaphragm-type actuator structure with adjustable exhaust speed provided by the present invention;

[0019] Figure 4 This is a schematic diagram of a fully opened state of an adjusting bolt in a diaphragm-type actuator structure with adjustable exhaust speed provided by the present invention.

[0020] In the figure: 1-adjusting bolt; 2-pressure regulator; 3-spring; 4-upper diaphragm box; 5-diaphragm; 6-lower diaphragm box; 7-driving rod; 8-exhaust hole. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1-2 As shown, the present invention provides a diaphragm-type actuator with adjustable exhaust speed, comprising: an adjusting bolt 1, a pressure regulator 2, a spring 3, an upper diaphragm box 4, a diaphragm 5, a lower diaphragm box 6, a driving rod 7, and an exhaust hole 8.

[0023] The diaphragm 5 is located between the upper diaphragm box 4 and the lower diaphragm box 6. The two ends of the diaphragm 5 are fixedly connected to the upper diaphragm box 4 and the lower diaphragm box 6 by bolts and nuts. An inner cavity is formed between the upper diaphragm box 4 and the lower diaphragm box 6, and the middle part of the diaphragm 5 is located in the inner cavity; the spring 3 and the spring seat are located in the spring cavity, and the spring seat is fixedly connected to the diaphragm 5. One end of the spring 3 is fixedly connected to the spring seat, and the other end is fixedly connected to the top inner side of the upper diaphragm box 4.

[0024] The side wall of the upper membrane box 4 is provided with a vent hole that passes through the spring cavity. The voltage regulator 2 matches the vent hole. The vent hole is provided with an internal thread. The outer periphery of the voltage regulator 2 is provided with an external thread. The voltage regulator 2 and the vent hole are detachably connected through the thread.

[0025] The adjusting bolt 1 is matched with the pressure regulator 2. The inner circumference of the pressure regulator 2 is provided with an internal thread, and the adjusting bolt 1 is provided with an external thread. The adjusting bolt 1 and the pressure regulator 2 are detachably connected through threads. By controlling the depth of the adjusting bolt 1 screwed into the pressure regulator 2, the exhaust and intake speeds in the spring cavity are adjusted, thereby adjusting the air pressure in the spring cavity of the diaphragm actuator and adjusting the action speed of the drive rod.

[0026] like Figure 2 As shown, the pressure regulator 2 is provided with a plurality of exhaust holes 8 penetrating the side wall of the pressure regulator 2 in the circumferential direction, which are used for exhausting or taking in air when the diaphragm actuator is in operation.

[0027] A pressure regulator cone surface is provided on the inner circumference of the valve seat of the pressure regulator 2, and an adjusting bolt cone surface is provided on the head of the adjusting bolt 1 that matches the pressure regulator cone surface. When the exhaust or intake speed needs to be adjusted, the exhaust or intake speed can be adjusted by rotating the adjusting bolt 1 to control the distance between the adjusting bolt cone surface and the pressure regulator cone surface.

[0028] like Figure 3 As shown, when the adjusting bolt 1 is adjusted until the adjusting bolt 1 is completely screwed into the pressure regulator 2, that is, when the adjusting bolt 1 is completely closed, the exhaust speed is the slowest and the buffering effect is the best.

[0029] like Figure 4 As shown, when the adjusting bolt 1 is adjusted to the point where the entire adjusting bolt 1 is located above all the exhaust holes 8 , all the exhaust holes 8 are unobstructed and exposed, that is, when the adjusting bolt 1 is fully opened, the exhaust speed is the fastest.

[0030] The present invention provides a diaphragm-type actuator with adjustable exhaust speed, which achieves the purpose of adjusting the air pressure in the spring chamber by controlling the exhaust speed of the actuator spring chamber, and finally realizes the adjustment of the air pressure difference on the upper and lower sides of the diaphragm to achieve the function of adjusting the actuator's action speed.

[0031] Several exhaust holes 8 are designed around the circumference of the pressure regulator 2 for exhaust. The valve seat of the pressure regulator 2 is designed as a cone. The adjusting bolt 1 threads on the pressure regulator 2, and the head of the adjusting bolt 1 is designed as a cone with the same angle as the valve seat of the pressure regulator 2. By controlling the depth of the adjusting bolt 1 screwed into the pressure regulator 2, the distance between the adjusting bolt's cone and the regulator's cone is controlled, thereby achieving the purpose of adjusting the exhaust and intake speeds.

[0032] When compressed air is introduced into the diaphragm actuator, the exhaust speed of the air in the spring chamber is adjusted to increase the pressure in the spring chamber, slowing down the movement speed of the drive rod and buffering the stroke.

[0033] When the compressed air is exhausted and the spring is reset, negative pressure is formed by adjusting the air entry speed into the spring chamber, slowing down the reset speed of the drive rod and achieving the buffering purpose.

[0034] Ultimately, the air intake and exhaust speeds of the spring chamber are adjusted to adjust the air pressure in the spring chamber of the actuator structure to achieve the action speed of the drive rod and achieve the purpose of buffering.

[0035] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, the present invention is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Any content not described in detail in the present invention may be adapted from existing technologies.

Claims

1. A diaphragm actuator with adjustable exhaust speed, characterized in that: The diaphragm type actuator comprises: an adjusting bolt (1), a pressure regulator (2), a spring (3), an upper diaphragm box (4), a diaphragm (5), and a lower diaphragm box (6); the diaphragm (5) is located between the upper diaphragm box (4) and the lower diaphragm box (6); both ends of the diaphragm (5) are fixedly connected to the upper diaphragm box (4) and the lower diaphragm box (6); an inner cavity is formed between the upper diaphragm box (4) and the lower diaphragm box (6); the middle part of the diaphragm (5) is located in the inner cavity; the spring (3) and the spring seat are located in the spring cavity; the spring seat is fixedly connected to the diaphragm (5); one end of the spring (3) is fixedly connected to the diaphragm (5); On the spring seat, the other end is fixedly connected to the top inner side of the upper diaphragm box (4); the side wall of the upper diaphragm box (4) is provided with a vent hole that passes through the spring cavity, the pressure regulator (2) matches the vent hole, and the pressure regulator (2) and the vent hole are detachably connected; the adjusting bolt (1) matches the pressure regulator (2), and the adjusting bolt (1) and the pressure regulator (2) are detachably connected, and by controlling the depth of the adjusting bolt (1) screwed into the pressure regulator (2), the exhaust and intake speeds in the spring cavity are adjusted, thereby adjusting the air pressure in the spring cavity of the diaphragm actuator and adjusting the action speed of the drive rod.

2. The diaphragm actuator with adjustable exhaust speed according to claim 1, characterized in that: The vent hole is provided with an internal thread, and the outer periphery of the pressure regulator (2) is provided with an external thread. The pressure regulator (2) and the vent hole of the upper membrane box (4) are detachably connected via the thread.

3. The diaphragm actuator with adjustable exhaust speed according to claim 1, characterized in that: The inner circumference of the voltage regulator (2) is provided with an internal thread, the adjusting bolt (1) is provided with an external thread, and the adjusting bolt (1) and the voltage regulator (2) are detachably connected via the thread.

4. The diaphragm actuator with adjustable exhaust speed according to claim 1, characterized in that: The pressure regulator (2) is provided with a plurality of exhaust holes (8) penetrating the side wall of the pressure regulator (2) in the circumferential direction, and is used for exhausting or taking in air when the diaphragm actuator is in operation.

5. The diaphragm actuator with adjustable exhaust speed according to claim 1, characterized in that: The inner periphery of the valve seat of the pressure regulator (2) is provided with a pressure regulator cone surface, and the head of the adjusting bolt (1) is provided with an adjusting bolt cone surface that matches the pressure regulator cone surface. When it is necessary to adjust the exhaust or intake speed, the exhaust or intake speed can be adjusted by rotating the adjusting bolt (1) to control the distance between the adjusting bolt cone surface and the pressure regulator cone surface.

6. The diaphragm actuator with adjustable exhaust speed according to claim 1, characterized in that: The upper membrane box (4), the membrane (5), and the lower membrane box (6) are fixedly connected by bolts and nuts.

Images