Pipeline self-control valve

Abstract

The utility model discloses a pipeline self-control valve which comprises a valve body, a valve seat is fixedly installed on the valve body, the valve seat is connected with a valve rod in a sliding mode, the two sides of the valve rod are hinged to the end of one side of an adjustable lever assembly respectively, one side of the adjustable lever assembly is hinged to one end of a support, and the other end of the support is fixedly connected with a supporting plate. The other side of the adjustable lever assembly is connected with the two sides of an adjusting rod in a sliding and clamping mode, one end of the adjusting rod is connected with a pneumatic thin film executing mechanism, the two sides of the pneumatic thin film executing mechanism are fixedly connected with one ends of second supports respectively, the other ends of the second supports are fixedly connected with supporting plates respectively, and one ends of the supporting plates are fixedly connected with a valve seat. The pneumatic thin film executing mechanism works and is matched with the adjustable lever assembly to drive the valve rod to work, the lever structure of the adjustable lever assembly can amplify force transmission of the pneumatic thin film executing mechanism, and therefore the pneumatic thin film executing mechanism can adjust movement of the valve rod through small pressure changes.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline valve technical field, concretely is a pipeline automatic control valve. BACKGROUND

[0002] Automatic control valve refers to the use of electric, pneumatic, hydraulic or electromagnetic drive and other ways of human power, control valve. Its characteristics are: convenient to use, safe; can be controlled on site, also can be controlled remotely; can control single valve, also can control multiple valves; can carry out simple on-off control, also can realize regulating control; with electronic computer, can realize programmed control.

[0003] The existing automatic control valve such as the corrugated pipe automatic control regulating valve disclosed in Chinese patent CN210088138U, including the valve body, valve stem, valve seat, valve core, valve cover that constitute the basic components of valve, and the sealing seat that seals the valve core, the connecting rod connected with the valve body and the pneumatic diaphragm actuator, the connecting rod is provided with an inner tube, the center hole of the inner tube is also provided with a corrugated pipe, the upper end of the corrugated pipe is sealed with a valve cover, the valve stem penetrates the sealing seat, the center hole of the corrugated pipe and the valve cover, and the filler is embedded in the center hole of the valve cover, the upper end of the valve stem is connected with the pneumatic diaphragm actuator, the input air pressure is converted into the thrust of the push rod by the elastic diaphragm, the push rod makes the valve core produce corresponding displacement, and the opening of the valve is changed.

[0004] The automatic control valve converts the air pressure input by the air compressor into the thrust of the push rod by the elastic diaphragm of the pneumatic diaphragm actuator, and makes the valve core produce corresponding displacement, changes the opening of the valve, realizes automatic control and regulation, and the precision of regulation is general, and when the fluid pressure in the pipeline is large, the reverse force of the fluid on the elastic diaphragm is large, and the sensitivity of regulation is worse, so the pipeline automatic control valve is provided to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a pipeline automatic control valve to solve the problems in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a pipeline self -control valve, including the valve body, the valve body is fixedly installed with the valve seat, the valve seat is connected with the valve stem, the both sides of the valve stem are respectively hinged one side end of adjustable lever assembly, one side of adjustable lever assembly is hinged one end of support, the other end of support is fixedly connected with support plate, the other side of adjustable lever assembly is connected with the both sides of second adjusting rod with sliding, one end of second adjusting rod is connected with pneumatic diaphragm actuator, the both sides of pneumatic diaphragm actuator are respectively fixedly connected with one end of support no.

[0007] The both ends of the valve stem are respectively fixedly connected with hinged shafts, and the two ends of the side, away from the pneumatic diaphragm actuator, of the second adjusting rod are respectively fixedly connected with cylindrical pins.

[0008] Preferably, one end of the valve stem is coaxially fixedly connected with one side end of a first adjusting rod, the other side of the first adjusting rod is slidingly sleeved with a support no.

[0009] Preferably, the adjustable lever assembly comprises an adjusting lever, a sliding column, a threaded knob, a support frame and a transmission connecting rod, one side of the adjusting lever is hinged with a support, the other side of the adjusting lever is slidingly connected with the second adjusting rod, one side end of the adjusting lever is slidingly connected with the sliding column, one end of the sliding column is fixedly connected with a middle part of one end of the support frame, the other end of the support frame is hingedly connected with one end of the transmission connecting rod, the other end of the transmission connecting rod is hingedly connected with the hinged shaft, the threaded knob is rotatably installed in the sliding column, and one end of the threaded knob is connected with the adjusting lever through a threaded structure.

[0010] Preferably, the adjusting lever is provided with a sliding opening on the side, away from the support, of the adjusting lever, the sliding opening is slidingly connected with a cylindrical pin, and the support frame is in a shape of a Chinese character.

[0011] Compared with the prior art, the utility model has the beneficial effects that: through the work of the pneumatic diaphragm actuator, the adjustable lever assembly drives the valve stem to work, the lever structure of the adjustable lever assembly can amplify the force transmission of the pneumatic diaphragm actuator, and then the pneumatic diaphragm actuator can adjust the movement of the valve stem through smaller pressure changes, and the adjustable lever assembly can adjust the position of the resistance arm, so that the force transmission distance is conveniently adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The utility model structure schematic drawing is shown in the figure.

[0013] Figure 2Another view structure schematic view of the utility model;

[0014] Figure 3 The utility model discloses plane structure schematic view.

[0015] In the drawing: valve body 1, valve seat 2, support one 3, first adjusting rod 4, spring 5, pneumatic diaphragm actuator 6, support two 7, support plate 8, adjustable lever assembly 9, adjusting lever 91, sliding port 911, sliding column 92, screw knob 93, support frame 94, transmission connecting rod 95, support 10, valve stem 11, articulated axle 111, second adjusting rod 12, cylindrical pin 121. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the scope of protection of the utility model.

[0017] Embodiment 1

[0018] Refer to Figure 1 , 2 , the utility model discloses a first embodiment, and this embodiment provides a pipeline automatic control valve, including valve body 1, valve body 1 is fixedly installed with valve seat 2, and valve seat 2 is slidably connected with valve stem 11, and the two sides of valve stem 11 are respectively hinged with one side end of adjustable lever assembly 9, and one side of adjustable lever assembly 9 is hinged with one end of support 10, and the other end of support 10 is fixedly connected with support plate 8, and the other side of adjustable lever assembly 9 is slidably connected with the two sides of second adjusting rod 12, and one end of second adjusting rod 12 is connected with pneumatic diaphragm actuator 6, and the two sides of pneumatic diaphragm actuator 6 are respectively fixedly connected with one end of support two 7, and the other end of support two 7 is respectively fixedly connected with support plate 8, and one end of support plate 8 is fixedly connected with valve seat 2.

[0019] The pneumatic diaphragm actuator 6 is connected with the pipeline of the air compressor, and the pneumatic diaphragm actuator 6 is used to convert the air pressure input by the air compressor into a pushing force on the second adjusting rod 12, the second adjusting rod 12 is moved to drive the sliding clamping adjustable lever assembly 9 to work, the cylindrical pin 121 pushes the adjusting lever 91 to swing, the adjusting lever 91 cooperates with the support frame 94 and the transmission connecting rod 95 to realize a lever structure, the force transmission of the pneumatic diaphragm actuator 6 can be amplified, the valve rod 11 is moved, and then the pneumatic diaphragm actuator 6 can adjust the movement of the valve rod 11 through a smaller pressure change, and the threaded knob 93 is rotated manually, the sliding column 92 connected in rotation is extended out of the adjusting lever 91 or retracted into the adjusting lever 91, and then the length position of the resistance arm of the lever structure is changed, so that the force transmission distance of the adjusting lever 91 is conveniently changed.

[0020] Embodiment 2

[0021] With reference to Figures 1-3 For the second embodiment of the utility model, the embodiment is based on the previous embodiment, specifically, one end of the valve rod 11 is coaxially and fixedly connected with one side end of the first adjusting rod 4, the other side of the first adjusting rod 4 is slidingly sleeved with the support 3, the support 3 is fixedly connected with the valve seat 2, the spring 5 is slidingly sleeved outside the first adjusting rod 4, one end of the spring 5 abuts against the end of the valve rod 11, and the other end of the spring 5 abuts against the support 3.

[0022] Specifically, the two ends of the valve rod 11 are fixedly connected with the hinge shaft 111 respectively, and the two ends of the second adjusting rod 12, away from the pneumatic diaphragm actuator 6, are fixedly connected with the cylindrical pin 121 respectively.

[0023] Specifically, the adjustable lever assembly 9 comprises the adjusting lever 91, the sliding column 92, the threaded knob 93, the support frame 94 and the transmission connecting rod 95, one side of the adjusting lever 91 is hingedly connected with the hinge support 10, the other side of the adjusting lever 91 is slidingly clamped with the second adjusting rod 12 respectively, one side end of the adjusting lever 91 is slidingly clamped with the sliding column 92, one end of the sliding column 92 is fixedly connected with the middle part of one end of the support frame 94, the other end of the support frame 94 is hingedly connected with one end of the transmission connecting rod 95 on the two sides respectively, the other end of the transmission connecting rod 95 is hingedly connected with the hinge shaft 111 respectively, the sliding column 92 is rotationally installed with the threaded knob 93 inside, and one end of the threaded knob 93 is connected with the adjusting lever 91 in a threaded structure.

[0024] The pneumatic diaphragm actuator 6 is connected with the air compressor through pipeline, and the pneumatic diaphragm actuator 6 converts the air pressure input by the air compressor into a pushing force on the second adjusting rod 12 by means of the elastic diaphragm inside the pneumatic diaphragm actuator 6, the second adjusting rod 12 moves to drive the slidingly connected adjustable lever assembly 9 to work, the cylindrical pin 121 pushes the adjusting lever 91 to swing, the adjusting lever 91 cooperates with the support frame 94 and the transmission connecting rod 95 to realize a lever structure, the force transmission of the pneumatic diaphragm actuator 6 can be amplified, the valve rod 11 is driven to move, and then the pneumatic diaphragm actuator 6 can adjust the movement of the valve rod 11 through smaller pressure changes.

[0025] Further, the adjusting lever 91 is provided with a sliding opening 911 on the side away from the support 10, and the cylindrical pin 121 is slidingly connected in the sliding opening 911, and the support frame 94 has a shape of a Chinese character 'fang'.

[0026] By manually rotating the threaded knob 93, the threaded knob 93 drives the rotationally connected sliding column 92 to extend out of the adjusting lever 91 or retract into the adjusting lever 91, so as to change the length position of the resistance arm of the lever structure, and conveniently change the force transmission distance of the adjusting lever 91.

[0027] Embodiment 3

[0028] Reference Figures 1-3 For the third embodiment of the utility model, based on the above two embodiments, when in use, the pneumatic diaphragm actuator 6 is connected with the air compressor through pipeline, and the pneumatic diaphragm actuator 6 converts the air pressure input by the air compressor into a pushing force on the second adjusting rod 12 by means of the elastic diaphragm inside the pneumatic diaphragm actuator 6, the second adjusting rod 12 moves to drive the slidingly connected adjustable lever assembly 9 to work, the cylindrical pin 121 pushes the adjusting lever 91 to swing, the adjusting lever 91 cooperates with the support frame 94 and the transmission connecting rod 95 to realize a lever structure, the force transmission of the pneumatic diaphragm actuator 6 can be amplified, the valve rod 11 is driven to move, and then the pneumatic diaphragm actuator 6 can adjust the movement of the valve rod 11 through smaller pressure changes, and simultaneously by manually rotating the threaded knob 93, the threaded knob 93 drives the rotationally connected sliding column 92 to extend out of the adjusting lever 91 or retract into the adjusting lever 91, so as to change the length position of the resistance arm of the lever structure, and conveniently change the force transmission distance of the adjusting lever 91.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pipeline automatic valve, comprising a valve body (1), a valve seat (2) fixedly installed on the valve body (1), and a valve rod (11) slidingly connected to the valve seat (2), characterized in that: Two sides of the valve stem (11) are respectively hinged to one side end of the adjustable lever assembly (9), one side of the adjustable lever assembly (9) is hinged to one end of the support (10), the other end of the support (10) is fixedly connected to the support plate (8), the other side of the adjustable lever assembly (9) is slidingly clamped to two sides of the second adjusting rod (12), one end of the second adjusting rod (12) is connected to the pneumatic diaphragm actuator (6), two sides of the pneumatic diaphragm actuator (6) are respectively fixedly connected to one end of the bracket two (7), the other end of the bracket two (7) is respectively fixedly connected to the support plate (8), one end of the support plate (8) is fixedly connected to the valve seat (2). Two ends of the valve stem (11) are respectively fixedly connected to the hinge shaft (111), and two ends of the second adjusting rod (12) away from the pneumatic diaphragm actuator (6) are respectively fixedly connected to the cylindrical pin (121).

2. The self-operated valve according to claim 1, wherein: One end of the valve stem (11) is coaxially fixedly connected to one side end of the first adjusting rod (4), the other side of the first adjusting rod (4) is slidingly sleeved with the bracket one (3), the bracket one (3) is fixedly connected to the valve seat (2), the first adjusting rod (4) is slidingly sleeved with the spring (5), one end of the spring (5) abuts against the end of the valve stem (11), the other end of the spring (5) abuts against the bracket one (3).

3. The self-operated valve according to claim 1, wherein: The adjustable lever assembly (9) comprises an adjusting lever (91), a sliding column (92), a threaded knob (93), a support frame (94), and a transmission connecting rod (95), one side of the adjusting lever (91) is hinged to the support (10), the other side of the adjusting lever (91) is slidingly clamped to the second adjusting rod (12), one side end of the adjusting lever (91) is slidingly clamped to the sliding column (92), one end of the sliding column (92) is fixedly connected to the middle part of one end of the support frame (94), the other end of the support frame (94) is respectively hinged to one end of the transmission connecting rod (95), the other end of the transmission connecting rod (95) is respectively hinged to the hinge shaft (111), the threaded knob (93) is rotatably installed in the sliding column (92), and one end of the threaded knob (93) is connected to the adjusting lever (91) through a threaded structure.

4. A self-operated valve according to claim 3, wherein: The adjusting lever (91) is provided with a sliding opening (911) on the side away from the support (10), the sliding opening (911) is slidingly clamped to the cylindrical pin (121), and the support frame (94) is a character-shaped structure.

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