CN111609192A - Ultramicro-pressure self-operated pressure regulating valve - Google Patents
Ultramicro-pressure self-operated pressure regulating valve Download PDFInfo
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- CN111609192A CN111609192A CN202010335459.2A CN202010335459A CN111609192A CN 111609192 A CN111609192 A CN 111609192A CN 202010335459 A CN202010335459 A CN 202010335459A CN 111609192 A CN111609192 A CN 111609192A
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- actuating mechanism
- pressure
- rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/121—Attachments or mountings adjustable, e.g. to modify spring characteristics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/365—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a diaphragm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/10—Enclosure elements, e.g. for protection
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention belongs to the technical field of regulating valves, and particularly relates to an ultra-micro pressure self-operated pressure regulating valve which comprises a valve body, a valve rod, an actuating mechanism, a pressure guide pipe and a first spring; the valve rod penetrates through a first plate above the valve body and is connected with the actuating mechanism, the outer ring of the actuating mechanism is communicated with the valve body through a pressure guide pipe, the actuating mechanism is connected with the first plate through a first rod, the valve rod penetrates through a thin film in the actuating mechanism and extends out of the upper end face of the actuating mechanism, and the upper end of the valve rod penetrates through a supporting plate and is fixedly connected with a second plate; the supporting plate is fixedly connected to the first plate through a second rod, the second plate is arranged on the inner ring of the supporting plate, and a first spring is arranged above the second plate; a pressing plate is arranged at the upper end of the first spring, a third plate is arranged at the upper end of the pressing plate, the third plate is connected to the second rod through a bolt, and an adjusting bolt is arranged at the center of the third plate; the first spring is arranged above the actuating mechanism, so that the working pressure of the self-operated pressure regulating valve can be conveniently regulated.
Description
Technical Field
The invention belongs to the technical field of regulating valves, and particularly relates to an ultra-micro pressure self-operated pressure regulating valve.
Background
The self-operated pressure regulating valve is divided into three series of self-operated pressure, pressure difference and flow regulating valves. The self-operated pressure regulating valve is divided into a front valve type and a rear valve type according to the position of a pressure taking point, and when the pressure taking point is in front of the valve, the pressure taking point is used for regulating the pressure in front of the valve to be constant; the pressure taking point is behind the valve and is used for adjusting the pressure behind the valve to be constant. When the pressure before the valve and the pressure after the valve are simultaneously introduced into two sides of the air chamber of the actuating mechanism, the self-operated differential pressure regulating valve can regulate the pressure at two ends of the regulating valve to be constant, or the differential pressure at two ends of an orifice plate arranged on a pipeline can be introduced into two sides of the air chamber of the film actuating mechanism to form the self-operated flow regulating valve, or the self-operated differential pressure regulating valve is used for realizing flow regulation after flow detection in other modes.
When the self-operated pressure regulating valve regulates working pressure, the working pressure is regulated by regulating the deformation amount of the spring between the valve body and the actuating mechanism, and the spring is positioned between the valve body and the actuating mechanism, so that the single rotation angle of the regulating seat at the lower end of the spring is limited, the working pressure is required to be regulated for multiple times by rotating the regulating seat, and troubles are brought to workers.
The self-operated pressure regulating valve provided by the application number 2019205366296 comprises an actuator, wherein the bottom of the actuator is fixedly connected with a support, the support is provided with a plurality of supports, an adjusting seat is arranged below the support, one ends of the supports, far away from the support, are fixedly connected with the adjusting seat, the top of the adjusting seat is fixedly connected with a supporting block, the top of the supporting block is fixedly connected with a telescopic rod, the top of the telescopic rod is fixedly sleeved with a limiting block, and a first spring is sleeved on the telescopic rod; the acting force of the first spring on the actuator is changed by rotating the adjusting seat, and the adjusting angle of each rotation of the adjusting seat is limited due to the fact that the supports are arranged on the two sides of the adjusting seat;
in view of this, in order to overcome the above technical problems, the present inventor has designed and developed an ultra-low pressure self-operated pressure regulating valve, which solves the problem that the angle of adjustment is limited by each rotation of the adjusting seat by disposing a first spring above the actuator.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problem that the adjusting angle of each rotation of the adjusting seat is limited when the first spring is positioned between the actuator and the valve body, the invention provides an ultra-micro pressure self-operated pressure adjusting valve.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an ultra-micro pressure self-operated pressure regulating valve which comprises a valve body, a valve rod, an actuating mechanism, a pressure guide pipe and a first spring, wherein the valve rod is arranged on the valve body; the valve rod penetrates through a first plate above the valve body and is connected with the actuating mechanism, the outer ring of the actuating mechanism is communicated with the valve body through a pressure guide pipe, the actuating mechanism is connected with the first plate through a first rod, the valve rod penetrates through a thin film in the actuating mechanism and extends out of the upper end face of the actuating mechanism, and the upper end of the valve rod penetrates through a supporting plate and is fixedly connected with a second plate; the supporting plate is fixedly connected to the first plate through a second rod, the second plate is arranged on the inner ring of the supporting plate, and a first spring is arranged above the second plate; a pressing plate is arranged at the upper end of the first spring, a third plate is arranged at the upper end of the pressing plate and is connected to the second rod through a bolt, and an adjusting bolt is arranged at the center of the third plate; the first spring is arranged above the actuating mechanism, so that the working pressure of the self-operated pressure regulating valve can be conveniently regulated; when the self-operated pressure regulating valve works, the working pressure is regulated by regulating the deformation amount of the spring between the valve body and the actuating mechanism, and the spring is positioned between the valve body and the actuating mechanism, so that the single rotation angle of the regulating seat at the lower end of the spring is limited, the working pressure needs to be regulated for multiple times by rotating the regulating seat, and troubles are brought to workers; when the self-operated pressure regulating valve needs to regulate working pressure, the regulating bolt can be rotated to press the first spring through the pressure plate, so that the pressure of the first spring acting on the second plate is increased, then the pressure of the second plate acting on the valve rod is increased, and at the moment, the pressure of working media flowing through the valve body is increased; similarly, when the adjusting bolt moves upwards in a rotating mode, the first spring pushes the pressure plate to move upwards, so that the pressure of the first spring acting on the second plate is reduced, then the pressure of the second plate acting on the valve rod is reduced, and at the moment, the pressure of working media flowing through the valve body is reduced; when the whole self-operated pressure regulating valve is protected, only the part below the first spring is protected, so that the first spring is exposed in the environment, and the working pressure of the self-operated pressure regulating valve is conveniently regulated.
Preferably, a sealing unit is arranged between the actuating mechanism and the first supporting plate; the sealing unit comprises a shell, a first rubber ring and a retainer ring; the lower end of the shell is fixedly connected to the upper end face of the actuating mechanism, a first rubber ring is arranged on the outer ring of the valve rod in the shell, the cross section of the first rubber ring is M-shaped, the concave part of the first rubber ring is attached to the inner ring of the check ring, and the outer ring of the check ring is fixedly connected to the inner side wall of the shell; the sealing between the valve rod and the actuating mechanism is realized through the sealing unit; the first spring is arranged at the upper end of the actuating mechanism, so that the upper end of the valve rod penetrates through the upper end of the actuating mechanism to slide up and down, the sealing performance of a cavity formed by a film in the actuating mechanism and the inner top surface of the actuating mechanism is guaranteed, and working media are prevented from overflowing from a gap between the valve rod and the actuating mechanism after entering the cavity from a pressure guide pipe; therefore, a first rubber ring is arranged on the valve rod, and a check ring is arranged on the inner side wall of the shell, so that the inner ring of the check ring is embedded into the concave part of the first rubber ring; if only realize sealed between valve body and the actuating mechanism through the retaining ring, the inner circle rigid coupling of retaining ring is on the valve rod outer lane, and the outer lane rigid coupling of retaining ring leads to being difficult to the dismouting between valve rod and the actuating mechanism on the lateral wall of casing, and through the recess with the retaining ring embedding at a rubber circle, makes things convenient for the dismantlement between valve rod and the actuating mechanism.
Preferably, the inner top surface of the shell is provided with a second spring, and the lower end of the second spring is provided with a second rubber ring; the lower end of the second rubber ring is fixedly connected with the upper end face of the check ring, and the concave part of the second rubber ring is attached to the upper end face of the first rubber ring; the deformation amount of the check ring is reduced through the matching between the second spring and the second rubber ring; when the valve rod moves up and down, the valve rod drives the first rubber ring to move up and down, and simultaneously the first rubber ring pulls or presses down the inner ring of the check ring, so that the check ring inclines upwards or downwards; when the valve rod upwards moved, the lower extreme of No. two rubber rings pushed down the retaining ring, make retaining ring and No. two rubber ring junctions protruding, make the position that is close to the inner circle on the retaining ring be in the horizontality, at this moment, the pressure increase of retaining ring extrusion attached No. one rubber ring, and the same is said, when the valve rod downstream, the retaining ring is pulled up to the lower extreme of No. two rubber rings, make the position that is close to the inner circle on the retaining ring be in the horizontality, at this moment, the pressure increase of retaining ring extrusion attached No. one rubber ring, thereby the leakproofness between valve rod and the actuating mechanism has been guaranteed.
Preferably, the inner ring of the retainer ring is in a convex circular ring shape; the shape of the first rubber ring concave part corresponds to the shape of the inner ring of the check ring; the sealing performance between the valve rod and the actuating mechanism is enhanced again through the matching of the inner ring of the check ring and the concave part of the first rubber ring; the inner ring of the check ring is designed into a circular ring shape, the concave part of the rubber ring is designed into a shape corresponding to that of the inner ring of the check ring, the inner ring of the check ring can be firmly clamped in the concave part of the rubber ring, the valve rod is prevented from moving up and down in the actuating mechanism, the separation phenomenon occurs between the rubber ring and the check ring, meanwhile, the contact area between the inner ring of the check ring and the concave part of the rubber ring is also increased, the sealing performance between the check ring and the rubber ring is enhanced, and then the sealing performance between the valve rod and the actuating mechanism is enhanced.
Preferably, a deflector rod is arranged on the outer ring of the upper end of the adjusting bolt, and the end part of the deflector rod is hinged with a telescopic rod; the third plate is uniformly provided with a plurality of through holes, and the diameter of each through hole is twice that of the telescopic rod; the rotation adjustment of the adjusting bolt is facilitated through the matching between the deflector rod and the telescopic rod; when the working medium flows through the self-operated pressure regulating valve, the flow of the working medium leads to the shaking of the self-operated pressure regulating valve, the adjusting bolt is connected to the third plate in a rotating mode, after the self-operated pressure regulating valve shakes, the adjusting bolt rotates automatically, the working pressure of the self-operated pressure regulating valve can be influenced, the adjusting bolt is arranged on the adjusting bolt, the adjusting bolt is stirred through the shifting rod to rotate, the torque of the adjusting bolt is increased, the torsional force of the adjusting bolt is reduced, the operation of workers is facilitated, after the adjusting bolt rotates, one end of the telescopic rod is inserted into the through hole, the adjusting bolt is fastened, the shaking of the self-operated pressure regulating valve is avoided, and the self-rotation phenomenon of the adjusting bolt is caused.
Preferably, a rotating disc is arranged between the lower end of the adjusting bolt and the upper end face of the pressing plate; the upper end face of the rotating disc is fixedly connected to the lower end of the adjusting bolt, the lower end face of the rotating disc is provided with an annular groove, and a ball is arranged in the annular groove; the friction force between the adjusting bolt and the pressure plate is reduced by rotating the disc; when adjusting bolt revolves, adjusting bolt's lower extreme can produce extrusion friction with the up end of clamp plate, leads to adjusting bolt's revolving force increase, increases staff's labour, for this reason through settling the rolling disc at the adjusting bolt lower extreme for the ball roll extrusion clamp plate of rolling disc lower extreme replaces sliding friction through rolling friction, reduces the frictional force between adjusting bolt and the clamp plate, reduces staff's labour.
The invention has the technical effects and advantages that:
1. according to the ultramicro-pressure self-operated pressure regulating valve, the first spring is arranged above the actuating mechanism, and the adjusting bolt is matched, so that the force of the first spring acting on the valve rod and the actuating mechanism can be adjusted in place at one time, operation of workers is facilitated, and meanwhile, when the whole self-operated pressure regulating valve is protected, only the part below the first spring needs to be protected, so that the first spring is exposed in the environment, and the working pressure of the self-operated pressure regulating valve is conveniently adjusted.
2. According to the ultramicro-pressure self-operated pressure regulating valve, the sealing performance between the valve rod and the actuating mechanism is enhanced through the matching between the check ring and the first rubber ring, and the attaching extrusion force of the inner ring of the check ring to the concave part of the first rubber ring is increased through the matching between the second rubber ring and the second spring, so that the sealing performance between the check ring and the first rubber ring is enhanced.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is an enlarged view of a portion of FIG. 3 at C;
in the figure: the valve comprises a valve body 1, a first plate 11, a first rod 111, a second rod 112, a supporting plate 12, a second plate 121, a third plate 13, a through hole 131, a valve rod 2, an actuating mechanism 3, a film 31, a pressure guide pipe 4, a first spring 5, a pressure plate 51, an adjusting bolt 6, a shift lever 61, an expansion rod 62, a sealing unit 7, a shell 71, a second spring 711, a second rubber ring 712, a first rubber ring 72, a retainer ring 73, a rotating disc 8, an annular groove 81 and balls 82.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the following embodiments.
As shown in fig. 1 to 5, the ultra-micro pressure self-operated pressure regulating valve according to the present invention includes a valve body 1, a valve rod 2, an actuator 3, a pressure pipe 4 and a first spring 5; the valve rod 2 penetrates through a first plate 11 above the valve body 1 and is connected with the actuating mechanism 3, the outer ring of the actuating mechanism 3 is communicated with the valve body 1 through a pressure guide pipe 4, the actuating mechanism 3 is connected with the first plate 11 through a first rod 111, the valve rod 2 penetrates through a film 31 in the actuating mechanism 3 and extends out of the upper end face of the actuating mechanism 3, and the upper end of the valve rod 2 penetrates through a supporting plate 12 and is fixedly connected with a second plate 121; the supporting plate 12 is fixedly connected to the first plate 11 through a second rod 112, a second plate 121 is arranged on the inner ring of the supporting plate 12, and a first spring 5 is arranged above the second plate 121; the upper end of the first spring 5 is provided with a pressing plate 51, the upper end of the pressing plate 51 is provided with a third plate 13, the third plate 13 is connected to the second rod 112 through bolts, and the center of the third plate 13 is provided with an adjusting bolt 6; the first spring 5 is arranged above the actuating mechanism 3, so that the working pressure of the self-operated pressure regulating valve can be conveniently regulated; when the self-operated pressure regulating valve regulates working pressure, the working pressure is regulated by regulating the deformation amount of a spring between a valve body 1 and an actuating mechanism 3, and because the spring is positioned between the valve body 1 and the actuating mechanism 3, the single rotation angle of a regulating seat at the lower end of the spring is limited, so that the working pressure needs to be regulated for multiple times through the rotation of the regulating seat, and troubles are brought to workers; when the working pressure of the self-operated pressure regulating valve needs to be regulated, the regulating bolt 6 can be rotated, the regulating bolt 6 presses the first spring 5 downwards through the pressure plate 51, so that the pressure of the first spring 5 acting on the second plate 121 is increased, then the pressure of the second plate 121 acting on the valve rod 2 is increased, and at the moment, the pressure of working media flowing through the valve body 1 is increased; similarly, when the adjusting bolt 6 moves upwards in a rotating manner, the first spring 5 pushes the pressure plate 51 to move upwards, so that the pressure of the first spring 5 acting on the second plate 121 is reduced, then the pressure of the second plate 121 acting on the valve rod 2 is reduced, and the pressure of the working medium flowing through the valve body 1 is reduced; when the self-operated pressure regulating valve is integrally protected, only the part below the first spring 5 is protected, so that the first spring 5 is exposed in the environment, and the working pressure of the self-operated pressure regulating valve is conveniently regulated.
As a specific embodiment of the present invention, a sealing unit 7 is disposed between the actuator 3 and the first supporting plate 12; the sealing unit 7 comprises a shell 71, a first rubber ring 72 and a retainer ring 73; the lower end of the shell 71 is fixedly connected to the upper end face of the actuating mechanism 3, a first rubber ring 72 is arranged on the outer ring of the valve rod 2 in the shell 71, the section of the first rubber ring 72 is M-shaped, the concave part of the first rubber ring 72 is attached to the inner ring of the retainer ring 73, and the outer ring of the retainer ring 73 is fixedly connected to the inner side wall of the shell 71; the sealing between the valve rod 2 and the actuating mechanism 3 is realized through the sealing unit 7; the first spring 5 is arranged at the upper end of the actuating mechanism 3, so that the upper end of the valve rod 2 penetrates through the upper end of the actuating mechanism 3 to slide up and down, and a cavity enclosed by a film 31 in the actuating mechanism 3 and the inner top surface of the actuating mechanism 3 is ensured to be sealed, so that after a working medium in the valve body 1 enters the cavity from the pressure guide pipe 4, the working medium overflows from a gap between the valve rod 2 and the actuating mechanism 3; for this purpose, a first rubber ring 72 is arranged on the valve rod 2, a retaining ring 73 is arranged on the inner side wall of the shell 71, and the inner ring of the retaining ring 73 is embedded into the concave part of the first rubber ring 72; if the sealing between the valve body 1 and the actuator 3 is realized only by the retainer ring 73, the inner ring of the retainer ring 73 is fixedly connected to the outer ring of the valve rod 2, and the outer ring of the retainer ring 73 is fixedly connected to the side wall of the housing 71, so that the valve rod 2 and the actuator 3 are difficult to assemble and disassemble, and the retainer ring 73 is embedded in the concave part of the first rubber ring 72, so that the valve rod 2 and the actuator 3 are convenient to disassemble.
As a specific embodiment of the present invention, a second spring 711 is disposed on an inner top surface of the housing 71, and a second rubber ring 712 is disposed at a lower end of the second spring 711; the lower end of the second rubber ring 712 is fixedly connected with the upper end surface of the retainer ring 73, and the concave part of the second rubber ring 712 is attached with the upper end surface of the first rubber ring 72; the deformation amount of the retainer ring 73 is reduced through the matching between the second spring 711 and the second rubber ring 712; when the valve rod 2 moves up and down, the valve rod 2 drives the first rubber ring 72 to move up and down, and simultaneously the first rubber ring 72 pulls up or presses down the inner ring of the retainer ring 73, so that the retainer ring 73 inclines upwards or downwards, the extrusion force of the inner ring of the retainer ring 73 acting on the concave part of the first rubber ring 72 is smaller than that of the retainer ring 73 acting on the concave part of the first rubber ring 72 in a horizontal state, the sealing property between the valve rod 2 and the actuating mechanism 3 can be influenced, and therefore the deformation of the retainer ring 73 is reduced through the second rubber ring 712, and the sealing property between the valve rod 2 and the actuating mechanism 3 is enhanced; when the valve rod 2 moves upwards, the lower end of the second rubber ring 712 presses the check ring 73 downwards, the joint of the check ring 73 and the second rubber ring 712 is convex, the part, close to the inner ring, of the check ring 73 is in a horizontal state, at the moment, the pressure of the check ring 73 attached to the first rubber ring 72 in an extruding mode is increased, and similarly, when the valve rod 2 moves downwards, the check ring 73 is pulled upwards at the lower end of the second rubber ring 712, the part, close to the inner ring, of the check ring 73 is in a horizontal state, at the moment, the pressure of the check ring 73 attached to the first rubber ring 72 in an extruding mode is increased, and therefore the sealing performance between the valve rod 2 and the actuating mechanism 3.
As a specific embodiment of the present invention, the inner ring of the retainer ring 73 is a convex annular ring; the shape of the concave part of the first rubber ring 72 corresponds to the shape of the inner ring of the retainer ring 73; the sealing performance between the valve rod 2 and the actuating mechanism 3 is enhanced again through the matching of the inner ring of the retainer ring 73 and the concave part of the first rubber ring 72; the inner ring of the retainer ring 73 is designed into a circular ring shape, the concave part of the first rubber ring 72 is designed into a shape corresponding to that of the inner ring of the retainer ring 73, the inner ring of the retainer ring 73 can be firmly clamped in the concave part of the first rubber ring 72, the phenomenon that the first rubber ring 72 is separated from the retainer ring 73 when the valve rod 2 moves up and down in the actuating mechanism 3 is avoided, meanwhile, the contact area of the inner ring of the retainer ring 73 and the concave part of the first rubber ring 72 is also increased, therefore, the sealing performance between the retainer ring 73 and the first rubber ring 72 is enhanced, and then, the sealing performance between the valve rod 2 and the actuating mechanism 3 is enhanced.
As a specific embodiment of the present invention, a shift lever 61 is arranged on an outer ring of an upper end of the adjusting bolt 6, and an end of the shift lever 61 is hinged to a telescopic rod 62; the third plate 13 is uniformly provided with a plurality of through holes 131, and the diameter of each through hole 131 is twice that of the telescopic rod 62; the rotation adjustment of the adjusting bolt 6 is facilitated through the matching between the shift lever 61 and the telescopic rod 62; when the working medium flows through the inside of the self-operated pressure regulating valve, the flow of the working medium causes the self-operated pressure regulating valve to shake, the adjusting bolt 6 is rotatably connected to the third plate 13, after the self-operated pressure regulating valve shakes, the adjusting bolt 6 is caused to rotate by itself, the working pressure of the self-operated pressure regulating valve can be influenced, therefore, the adjusting bolt 6 is provided with the shifting rod 61 and the telescopic rod 62, the adjusting bolt 6 is shifted by the shifting rod 61 to rotate, the moment of the adjusting bolt 6 is increased, the torsional force of the adjusting bolt 6 is reduced, the operation of a worker is facilitated, after the adjusting bolt 6 rotates, one end of the telescopic rod 62 is inserted into the through hole 131, the adjusting bolt 6 is fastened, the shaking of the self-operated pressure regulating valve is avoided, and the self-rotation phenomenon of the adjusting bolt 6 is.
As a specific embodiment of the present invention, a rotating disc 8 is arranged between the lower end of the adjusting bolt 6 and the upper end surface of the pressure plate 51; the upper end face of the rotating disc 8 is fixedly connected to the lower end of the adjusting bolt 6, the lower end face of the rotating disc 8 is provided with an annular groove 81, and a ball 82 is arranged in the annular groove 81; the friction force between the adjusting bolt 6 and the pressure plate 51 is reduced by rotating the disc 8; when adjusting bolt 6 revolves, adjusting bolt 6's lower extreme can produce extrusion friction with the up end of clamp plate 51, leads to adjusting bolt 6's revolving force increase, increases staff's labour, for this reason through settling rolling disc 8 at adjusting bolt 6 lower extreme for ball 82 roll extrusion clamp plate 51 of rolling disc 8 lower extreme replaces sliding friction through rolling friction, reduces the frictional force between adjusting bolt 6 and the clamp plate 51, reduces staff's labour.
When the self-operated pressure regulating valve works, the working pressure is regulated by regulating the deformation amount of the spring between the valve body 1 and the actuating mechanism 3, and the spring is positioned between the valve body 1 and the actuating mechanism 3, so that the single rotation angle of the regulating seat at the lower end of the spring is limited, the working pressure needs to be regulated for many times, and troubles are brought to workers; when the working pressure of the self-operated pressure regulating valve needs to be regulated, the regulating bolt 6 can be rotated, the regulating bolt 6 presses the first spring 5 downwards through the pressure plate 51, so that the pressure of the first spring 5 acting on the second plate 121 is increased, then the pressure of the second plate 121 acting on the valve rod 2 is increased, and at the moment, the pressure of working media flowing through the valve body 1 is increased; similarly, when the adjusting bolt 6 moves upwards in a rotating manner, the first spring 5 pushes the pressure plate 51 to move upwards, so that the pressure of the first spring 5 acting on the second plate 121 is reduced, then the pressure of the second plate 121 acting on the valve rod 2 is reduced, and the pressure of the working medium flowing through the valve body 1 is reduced; when the whole self-operated pressure regulating valve is protected, only the part below the first spring 5 is protected, so that the first spring 5 is exposed in the environment, and the working pressure of the self-operated pressure regulating valve is conveniently regulated; the first spring 5 is arranged at the upper end of the actuating mechanism 3, so that the upper end of the valve rod 2 penetrates through the upper end of the actuating mechanism 3 to slide up and down, and a cavity enclosed by a film 31 in the actuating mechanism 3 and the inner top surface of the actuating mechanism 3 is ensured to be sealed, so that after a working medium in the valve body 1 enters the cavity from the pressure guide pipe 4, the working medium overflows from a gap between the valve rod 2 and the actuating mechanism 3; for this purpose, a first rubber ring 72 is arranged on the valve rod 2, a retaining ring 73 is arranged on the inner side wall of the shell 71, and the inner ring of the retaining ring 73 is embedded into the concave part of the first rubber ring 72; if the sealing between the valve body 1 and the actuating mechanism 3 is realized only by the retaining ring 73, the inner ring of the retaining ring 73 is fixedly connected to the outer ring of the valve rod 2, and the outer ring of the retaining ring 73 is fixedly connected to the side wall of the shell 71, so that the valve rod 2 and the actuating mechanism 3 are difficult to assemble and disassemble, and the retaining ring 73 is embedded into the concave part of the first rubber ring 72, so that the valve rod 2 and the actuating mechanism 3 are convenient to disassemble; when the valve rod 2 moves up and down, the valve rod 2 drives the first rubber ring 72 to move up and down, and simultaneously the first rubber ring 72 pulls up or presses down the inner ring of the retainer ring 73, so that the retainer ring 73 inclines upwards or downwards, the extrusion force of the inner ring of the retainer ring 73 acting on the concave part of the first rubber ring 72 is smaller than that of the retainer ring 73 acting on the concave part of the first rubber ring 72 in a horizontal state, the sealing property between the valve rod 2 and the actuating mechanism 3 can be influenced, and therefore the deformation of the retainer ring 73 is reduced through the second rubber ring 712, and the sealing property between the valve rod 2 and the actuating mechanism 3 is enhanced; when the valve rod 2 moves upwards, the lower end of the second rubber ring 712 presses the check ring 73 downwards, so that the joint of the check ring 73 and the second rubber ring 712 is protruded, the part, close to the inner ring, on the check ring 73 is in a horizontal state, at the moment, the pressure of the check ring 73 extruded and attached to the first rubber ring 72 is increased, and similarly, when the valve rod 2 moves downwards, the lower end of the second rubber ring 712 pulls the check ring 73 upwards, the part, close to the inner ring, on the check ring 73 is in a horizontal state, so that the pressure of the check ring 73 extruded and attached to the first rubber ring 72 is increased, and the sealing performance between the valve rod 2 and the actuating mechanism 3 is ensured; the inner ring of the check ring 73 is designed into a circular ring shape, the concave part of the first rubber ring 72 is designed into a shape corresponding to that of the inner ring of the check ring 73, and the inner ring of the check ring 73 can be firmly clamped in the concave part of the first rubber ring 72, so that the separation phenomenon between the first rubber ring 72 and the check ring 73 when the valve rod 2 moves up and down in the actuating mechanism 3 is avoided, and meanwhile, the contact area between the inner ring of the check ring 73 and the concave part of the first rubber ring 72 is also increased, so that the sealing property between the check ring 73 and the first rubber ring 72 is enhanced, and further, the sealing property between the valve rod 2 and the actuating mechanism 3 is; when working medium flows through the interior of the self-operated pressure regulating valve, the self-operated pressure regulating valve shakes due to the flowing of the working medium, the adjusting bolt 6 is connected to the third plate 13 in a rotating mode, after the self-operated pressure regulating valve shakes, the adjusting bolt 6 rotates automatically, the working pressure of the self-operated pressure regulating valve can be influenced, therefore, the adjusting bolt 6 is provided with the deflector rod 61 and the telescopic rod 62, the adjusting bolt 6 is turned through the deflector rod 61, the moment of the adjusting bolt 6 is increased, the torsional force of the adjusting bolt 6 is reduced, the operation of a worker is facilitated, after the adjusting bolt 6 rotates, one end of the telescopic rod 62 is inserted into the through hole 131, the adjusting bolt 6 is fastened, and the phenomenon that the self-operated pressure regulating valve shakes to cause the self-rotation of the adjusting bolt 6 is avoided; when adjusting bolt 6 revolves, adjusting bolt 6's lower extreme can produce extrusion friction with the up end of clamp plate 51, leads to adjusting bolt 6's revolving force increase, increases staff's labour, for this reason through settling rolling disc 8 at adjusting bolt 6 lower extreme for ball 82 roll extrusion clamp plate 51 of rolling disc 8 lower extreme replaces sliding friction through rolling friction, reduces the frictional force between adjusting bolt 6 and the clamp plate 51, reduces staff's labour.
The foregoing illustrates and describes the principles, essential features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An ultra-micro pressure self-operated pressure regulating valve is characterized in that: the valve comprises a valve body (1), a valve rod (2), an actuating mechanism (3), a pressure guide pipe (4) and a first spring (5); the valve rod (2) penetrates through a first plate (11) above the valve body (1) and is connected with the actuating mechanism (3), the outer ring of the actuating mechanism (3) is communicated with the valve body (1) through a pressure guide pipe (4), the actuating mechanism (3) is connected with the first plate (11) through a first rod (111), the valve rod (2) penetrates through a thin film (31) in the actuating mechanism (3) and extends out of the upper end face of the actuating mechanism (3), and the upper end of the valve rod (2) penetrates through a supporting plate (12) and is fixedly connected with a second plate (121); the supporting plate (12) is fixedly connected to the first plate (11) through a second rod (112), a second plate (121) is arranged on the inner ring of the supporting plate (12), and a first spring (5) is arranged above the second plate (121); a pressing plate (51) is arranged at the upper end of the first spring (5), a third plate (13) is arranged at the upper end of the pressing plate (51), the third plate (13) is connected to the second rod (112) through a bolt, and an adjusting bolt (6) is arranged at the center of the third plate (13); the first spring (5) is arranged above the actuating mechanism (3), so that the working pressure of the self-operated pressure regulating valve can be conveniently regulated.
2. The ultra-micro pressure self-operated pressure regulating valve according to claim 1, wherein: a sealing unit (7) is arranged between the executing mechanism (3) and the first supporting plate (12); the sealing unit (7) comprises a shell (71), a first rubber ring (72) and a retainer ring (73); the lower end of the shell (71) is fixedly connected to the upper end face of the actuating mechanism (3), a first rubber ring (72) is arranged on the outer ring of the valve rod (2) positioned in the shell (71), the cross section of the first rubber ring (72) is M-shaped, the concave part of the first rubber ring (72) is attached to the inner ring of the retainer ring (73), and the outer ring of the retainer ring (73) is fixedly connected to the inner side wall of the shell (71); the sealing between the valve rod (2) and the actuating mechanism (3) is realized through the sealing unit (7).
3. The ultra-micro pressure self-operated pressure regulating valve according to claim 2, wherein: a second spring (711) is arranged on the inner top surface of the shell (71), and a second rubber ring (712) is arranged at the lower end of the second spring (711); the lower end of the second rubber ring (712) is fixedly connected to the upper end face of the retainer ring (73), and the concave part of the second rubber ring (712) is attached to the upper end face of the first rubber ring (72); the deformation amount of the retainer ring (73) is reduced through the matching between the second spring (711) and the second rubber ring (712).
4. The ultra-micro pressure self-operated pressure regulating valve according to claim 3, wherein: the inner ring of the retainer ring (73) is in a convex circular ring shape; the shape of the concave part of the first rubber ring (72) corresponds to the shape of the inner ring of the retainer ring (73); and the sealing performance between the valve rod (2) and the actuating mechanism (3) is enhanced again through the matching of the inner ring of the retainer ring (73) and the concave part of the first rubber ring (72).
5. The ultra-micro pressure self-operated pressure regulating valve according to claim 1, wherein: the outer ring of the upper end of the adjusting bolt (6) is provided with a deflector rod (61), and the end part of the deflector rod (61) is hinged with a telescopic rod (62); the third plate (13) is uniformly provided with a plurality of through holes (131), and the diameter of each through hole (131) is twice that of the telescopic rod (62); through the cooperation between driving lever (61) and telescopic link (62), make things convenient for adjusting bolt (6) to rotate the regulation.
6. The ultra-micro pressure self-operated pressure regulating valve according to claim 5, wherein; a rotating disc (8) is arranged between the lower end of the adjusting bolt (6) and the upper end face of the pressure plate (51); the upper end face of the rotating disc (8) is fixedly connected to the lower end of the adjusting bolt (6), the lower end face of the rotating disc (8) is provided with an annular groove (81), and a ball (82) is arranged in the annular groove (81); the friction between the adjusting bolt (6) and the pressure plate (51) is reduced by rotating the disc (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335459.2A CN111609192A (en) | 2020-04-24 | 2020-04-24 | Ultramicro-pressure self-operated pressure regulating valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335459.2A CN111609192A (en) | 2020-04-24 | 2020-04-24 | Ultramicro-pressure self-operated pressure regulating valve |
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| CN111609192A true CN111609192A (en) | 2020-09-01 |
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|---|---|---|---|
| CN202010335459.2A Pending CN111609192A (en) | 2020-04-24 | 2020-04-24 | Ultramicro-pressure self-operated pressure regulating valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883311A (en) * | 2021-10-28 | 2022-01-04 | 秦宏伟 | Ultramicro-pressure self-operated pressure regulating valve |
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| CN108488481A (en) * | 2018-03-08 | 2018-09-04 | 浙江工贸职业技术学院 | A kind of valve rod leak-proof structure |
| CN110185827A (en) * | 2019-06-26 | 2019-08-30 | 安徽省屯溪高压阀门有限公司 | A kind of high temperature and pressure bellows Self-operated pressure reducing valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202972082U (en) * | 2012-11-01 | 2013-06-05 | 卓旦春 | Reducing valve |
| CN103821981A (en) * | 2014-03-20 | 2014-05-28 | 浙江科海仪表有限公司 | Self-operated internal pressure collecting type adjusting valve |
| CN203836324U (en) * | 2014-04-21 | 2014-09-17 | 杭州中科阀门有限公司 | Negative pressure control type self-powered micro pressure adjusting valve |
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| CN113883311A (en) * | 2021-10-28 | 2022-01-04 | 秦宏伟 | Ultramicro-pressure self-operated pressure regulating valve |
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