CN114811092A - Self-cleaning pneumatic valve and using method thereof - Google Patents

Self-cleaning pneumatic valve and using method thereof Download PDF

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Publication number
CN114811092A
CN114811092A CN202210511987.8A CN202210511987A CN114811092A CN 114811092 A CN114811092 A CN 114811092A CN 202210511987 A CN202210511987 A CN 202210511987A CN 114811092 A CN114811092 A CN 114811092A
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China
Prior art keywords
rod
valve
ball core
cavity
pneumatic
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CN202210511987.8A
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Chinese (zh)
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范振中
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Individual
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Individual
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Priority to CN202210511987.8A priority Critical patent/CN114811092A/en
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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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
    • B08B1/143—Wipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • 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
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • 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
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)

Abstract

The invention belongs to the technical field of pneumatic valves, and particularly relates to a self-cleaning pneumatic valve and a using method thereof, wherein the self-cleaning pneumatic valve comprises: the pneumatic cleaning valve comprises a valve body, a ball core, a support, a pneumatic actuating mechanism, a valve rod and a pneumatic cleaning mechanism; when the valve body needs to be closed, gas is introduced into the cylinder body through the pneumatic actuating mechanism, the gas enters the first cavity through the first pipe and then enters the first groove from the first cavity, the gas enters the second cavity from the first groove, the air pressure in the second cavity rises, the piston rod is pushed to move downwards, the telescopic rod is driven to move downwards in the process that the piston rod moves downwards, the first scraping rod is rotatably connected to one end, far away from the piston rod, of the telescopic rod, the first scraping rod is always attached to the inner wall of the ball core, and scale on the inner wall of the ball core is scraped by the first scraping rod in the process that the piston rod moves downwards.

Description

Self-cleaning pneumatic valve and use method thereof
Technical Field
The invention belongs to the technical field of pneumatic valves, and particularly relates to a self-cleaning pneumatic valve and a using method thereof.
Background
Pneumatic valves are valves which are actuated by means of compressed air. The pneumatic valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pneumatic valve utilizes compressed air to push a plurality of groups of combined pneumatic pistons in the actuator to move, force is transferred to the characteristics of the cross beam and the inner curve track to drive the hollow main shaft to rotate, the compressed air disk is conveyed to each cylinder, the air inlet and outlet positions are changed to change the rotation direction of the main shaft, and the combination number of the cylinders can be adjusted according to the requirement of the rotation torque required by the load valve to drive the load valve to work.
The pneumatic ball valve is one pneumatic valve, and can be closed tightly only by using a pneumatic actuator to rotate 90 degrees by using an air source and a small rotating torque. The completely equal inner cavity of the valve body provides a straight flow passage with small resistance for the medium. Ball valves are generally considered to be most suitable for direct opening and closing. The ball valve is mainly characterized by compact structure and easy operation; the ball valve body can be integrated or combined.
However, in the use process of the pneumatic ball valve, the internal ball core channel of the pneumatic ball valve often generates scale or has impurities attached along with the accumulation of time, the scale or the impurities are not cleaned on the channel of the ball core, the blockage of the ball core channel can be caused by the accumulation of time, and the pneumatic ball valve is further disabled; however, the routine maintenance and cleaning of the pneumatic ball valve usually requires disassembly, which increases the workload and is cumbersome.
In view of the above, the present invention provides a self-cleaning pneumatic valve and a method for using the same to solve the above technical problems.
Disclosure of Invention
The invention provides a self-cleaning pneumatic valve and a using method thereof, aiming at overcoming the defects of the prior art and solving the problems of scale and impurities in a ball core channel of the pneumatic valve.
The technical scheme adopted by the invention for solving the technical problem is as follows: the invention discloses a using method of a self-cleaning pneumatic valve, which comprises the following steps:
s1: the valve body is arranged in a pipeline, gas is introduced into a cylinder body of the pneumatic actuating mechanism through an external gas pressure source, the gas pressure in the cylinder body rises, a piston in the cylinder body moves towards two sides of the cylinder body, a rack on the piston drives a valve rod to rotate, the valve rod drives a ball core to rotate, and the valve body is switched from on to off in the rotating process of the ball core; similarly, gas is pumped into the cylinder body of the pneumatic actuating mechanism through an external gas pressure source, the gas pressure in the cylinder body is reduced, so that the piston in the cylinder body moves to the middle part of the cylinder body, the rack drives the valve rod to rotate in the piston movement process, and further drives the ball core to rotate, and the valve body is switched from closed to open in the ball core rotation process;
s2: when the valve body needs to be closed, gas is introduced into the cylinder body through the pneumatic actuating mechanism, the gas enters the first cavity through the first pipe and then enters the first groove from the first cavity, the gas enters the second cavity from the first groove, the air pressure in the second cavity rises, the piston rod is pushed to move downwards, the telescopic rod is driven to move downwards in the downward movement process of the piston rod, the first scraping rod is rotatably connected to one end, away from the piston rod, of the telescopic rod, the first scraping rod is always attached to the inner wall of the ball core, and in the downward movement process of the piston rod, the first scraping rod scrapes scale on the inner wall of the ball core;
s3: when the valve body is always in a conducting state by the ball core or in a conducting state, impurities in water are accumulated in the ball core to cause the valve body to be blocked, at the moment, the electromagnetic valve is closed, the third channel is opened, air is filled into and pumped out of the second cavity in a reciprocating mode frequently through an external air pressure source of the third channel, the piston rod, the telescopic rod and the first scraping rod are driven to reciprocate up and down, the inner wall of the ball core is scraped in a reciprocating mode, and scale is cleaned; meanwhile, the piston rod, the telescopic rod and the first scraping rod reciprocate back and forth, so that the inside of the ball core is dredged by the flow of the matched water, and the accumulation of impurities in the water in the ball core is reduced.
A self-cleaning, pneumatically actuated valve adapted for use in the method of use described above, the self-cleaning, pneumatically actuated valve comprising:
a valve body;
the ball core is movably arranged in the valve body;
the bracket is fixedly arranged at the top of the valve body;
the pneumatic actuating mechanism is arranged at the top of the bracket;
the valve rod is fixedly connected to the top of the ball core and penetrates through the support to extend into the pneumatic actuating mechanism, and the pneumatic actuating mechanism, the valve rod and the ball core are matched with each other to realize the opening and closing of the valve body;
the pneumatic cleaning mechanism moves up and down in the ball core under the control of the pneumatic actuating mechanism, so that the inner part of the ball core is cleaned.
Preferably, the pneumatic cleaning mechanism comprises:
the first cavity is formed in the bracket;
the first pipe penetrates through the support and is communicated with the first cavity and the interior of the pneumatic actuating mechanism cylinder body;
the second cavity is formed in the valve rod and communicated with the inside of the ball core;
the first groove is formed in the valve rod, corresponds to the first cavity and is communicated with the second cavity;
the piston rod is slidably arranged in the second cavity;
the telescopic rod comprises a barrel body, a rod body and a first spring, the barrel body of the telescopic rod is horizontally and fixedly arranged at the bottom of the piston rod, the first spring is fixedly arranged inside the telescopic rod barrel, one end of the first spring is fixedly connected with the inner surface of the side wall, close to the piston rod, of the telescopic rod barrel, and the other end of the first spring is fixedly connected with one end, close to the piston rod, of the telescopic rod body; the one end that the piston rod was kept away from to the telescopic link body of rod rotates and is connected with the scraper rod No. one.
Preferably, the vertical section of the first scraping rod is triangular.
Preferably, a second spring is fixedly connected between the top of the piston rod and the top of the second cavity, a first channel is formed in the support, a second channel is formed in the valve rod, and the second channel is communicated with the second cavity.
Preferably, the horizontal section of the first groove is a sector with a central angle of 90 degrees; on the horizontal section of the valve rod, a connecting line a between the second channel and the central axis of the valve rod, a connecting line b between the closest point on the first groove from the second channel and the central axis of the valve rod, and an included angle between a and b is 90 degrees.
Preferably, the first cavity is internally and fixedly provided with an electromagnetic valve, and one side of the first cavity, which is far away from the valve rod, is provided with a third channel.
Preferably, the top of the piston rod is fixedly provided with a push rod.
Preferably, the one end that the piston rod was kept away from to the telescopic link is rotated and is connected with a pole and No. two poles, a pole is located the top of telescopic link, No. two poles are located the below of telescopic link, a pole rotates respectively with No. two poles and is connected with No. two scraper bars with the one end that the telescopic link was kept away from to a pole.
Preferably, torsion springs are arranged at the joints of the first rod, the second rod and the telescopic rod.
The invention has the following beneficial effects:
1. when the valve body needs to be closed, gas is introduced into the cylinder body through the pneumatic actuator, enters the first cavity through the first pipe and then enters the first groove from the first cavity, the gas enters the second cavity from the first groove, the air pressure in the second cavity rises, the piston rod is pushed to move downwards, the telescopic rod is driven to move downwards in the downward movement process of the piston rod, the end, far away from the piston rod, of the telescopic rod is rotatably connected with the first scraping rod, the first scraping rod is always attached to the inner wall of the ball core, and the first scraping rod scrapes scale on the inner wall of the ball core in the downward movement process of the piston rod.
2. When the ball core always enables the valve body to be in a conducting state or in a conducting state, impurities in water are accumulated in the ball core to cause the valve body to be blocked, at the moment, the electromagnetic valve is closed, the third channel is opened, air is filled into and pumped out of the second cavity frequently in a reciprocating mode through an external air pressure source of the third channel, the piston rod, the telescopic rod and the first scraping rod are driven to do reciprocating motion up and down, the inner wall of the ball core is scraped in a reciprocating mode, and scale is cleaned; meanwhile, the piston rod, the telescopic rod and the first scraping rod reciprocate back and forth, so that the inside of the ball core is dredged by the flow of the matched water, and the accumulation of impurities in the water in the ball core is reduced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a process flow diagram of a method of use of the present invention;
FIG. 2 is a perspective view of a pneumatically actuated valve of the present invention;
FIG. 3 is a cross-sectional view of a pneumatically actuated valve of the present invention;
FIG. 4 is a side sectional view of the internal structure of the pneumatic actuator of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 3 at A;
FIG. 6 is a partial enlarged view of FIG. 3 at B;
FIG. 7 is a graph of the position of the valve stem relative to the bracket when the pneumatically actuated valve of the present invention is opened;
FIG. 8 is a graph of the position of the valve stem relative to the bracket when the pneumatic valve of the present invention is closed;
in the figure: the valve body 1, the ball core 2, the support 3, the first channel 31, the pneumatic actuator 4, the valve rod 5, the second channel 51, the pneumatic cleaning mechanism 6, the first cavity 61, the third channel 611, the first pipe 62, the electromagnetic valve 621, the second cavity 63, the first groove 64, the piston rod 65, the second spring 651, the ejector rod 652, the telescopic rod 66, the first spring 661, the first scraping rod 662, the first rod 663, the second rod 664 and the second scraping rod 665.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 8, the method for using the self-cleaning pneumatic valve of the present invention comprises the following steps:
s1: the valve body 1 is arranged in a pipeline, gas is introduced into the cylinder body of the pneumatic actuator 4 through an external gas pressure source, the gas pressure in the cylinder body rises, so that a piston in the cylinder body moves towards two sides of the cylinder body, a rack on the piston drives the valve rod 5 to rotate, the valve rod 5 drives the ball core 2 to rotate, and the valve body 1 is turned off from conduction in the rotating process of the ball core 2; similarly, gas is pumped into the cylinder body of the pneumatic actuator 4 through an external gas pressure source, the gas pressure in the cylinder body is reduced, so that the piston in the cylinder body moves to the middle part of the cylinder body, the rack drives the valve rod 5 to rotate in the piston movement process, and further drives the ball core 2 to rotate, and the valve body 1 is switched from closed to open in the ball core 2 rotation process;
s2: when the valve body 1 needs to be closed, gas is introduced into the cylinder body through the pneumatic actuator 4, the gas enters the first cavity 61 through the first pipe 62 and then enters the first groove 64 from the first cavity 61, the gas enters the second cavity 63 from the first groove 64, the air pressure in the second cavity 63 rises, the piston rod 65 is pushed to move downwards, the telescopic rod 66 is driven to move downwards in the downward movement process of the piston rod 65, one end, far away from the piston rod 65, of the telescopic rod 66 is rotatably connected with a first scraping rod 662, the first scraping rod 662 is always attached to the inner wall of the ball core 2, and in the downward movement process of the piston rod 65, the first scraping rod 662 scrapes scale or impurities on the inner wall of the ball core 2;
s3: when the valve body 1 is always in a conducting state by the ball core 2 or impurities in water are accumulated in the ball core 2 in the conducting state to cause the valve body 1 to be blocked, at the moment, the electromagnetic valve 621 is closed, the third channel 611 is opened, and air is filled into and exhausted from the second cavity 63 through the external air pressure source of the third channel 611 in a reciprocating mode frequently, so that the piston rod 65, the telescopic rod 66 and the first scraping rod 662 are driven to reciprocate up and down to scrape the inner wall of the ball core 2 in a reciprocating mode, and scale is cleaned; meanwhile, the piston rod 65, the telescopic rod 66 and the first scraping rod 662 reciprocate back and forth to dredge the interior of the ball core 2 in cooperation with the flow of water, so that the accumulation of impurities in water in the ball core 2 is reduced.
A self-cleaning, pneumatically actuated valve adapted for use in the method of use described above, the self-cleaning, pneumatically actuated valve comprising:
a valve body 1;
the ball core 2 is movably arranged in the valve body 1;
the support 3 is fixedly arranged on the top of the valve body 1;
the pneumatic actuator 4 is arranged at the top of the bracket 3;
the valve rod 5 is fixedly connected to the top of the ball core 2 and penetrates through the support 3 to extend into the pneumatic actuating mechanism 4, and the pneumatic actuating mechanism 4, the valve rod 5 and the ball core 2 are matched with each other to realize the opening and closing of the valve body 1;
and the pneumatic cleaning mechanism 6 is controlled by the pneumatic actuating mechanism 4 to move up and down in the ball core 2, so that the inside of the ball core 2 is cleaned.
When the pneumatic actuator 4, the valve rod 5 and the ball core 2 are matched with each other to open and close the valve body 1, specifically, gas is introduced into the cylinder body of the pneumatic actuator 4 through an external pressure source (an air inlet of the external pressure source is positioned in the middle of the cylinder body), the air pressure in the cylinder body is increased, so that a piston in the cylinder body moves towards two sides of the cylinder body, racks are fixedly arranged on opposite surfaces of the pistons at two sides of the cylinder body, and teeth matched with the racks are arranged on the valve rod 5, so that when the piston moves towards two sides of the cylinder body, the racks on the piston drive the valve rod 5 to rotate, the valve rod 5 drives the ball core 2 to rotate, and in the rotating process of the ball core 2, the valve body 1 is turned off from conduction; similarly, gas is pumped into the cylinder body of the pneumatic actuator 4 through an external gas pressure source, the gas pressure in the cylinder body is reduced, so that the piston in the cylinder body moves to the middle part of the cylinder body, the rack drives the valve rod 5 to rotate in the piston movement process, and further drives the ball core 2 to rotate, and the valve body 1 is switched from closed to open in the ball core 2 rotation process; the closing and the conduction of the valve body 1 are realized by repeating the steps;
however, when the valve body 1 is used, scale or impurities can be condensed on the side wall of the internal channel of the ball core 2 of the valve body 1 along with the accumulation of time, so that the pneumatic cleaning mechanism 6 is arranged, and the pneumatic cleaning mechanism 6 moves up and down in the ball core 2 under the control of the pneumatic actuating mechanism 4 to clean the inside of the ball core 2.
As an embodiment of the present invention, the pneumatic cleaning mechanism 6 includes:
the first cavity 61 is formed in the support 3;
the first pipe 62 penetrates through the support 3 and communicates the first cavity 61 with the interior of the cylinder body of the pneumatic actuator 4;
the second cavity 63 is formed in the valve rod 5 and communicated with the inside of the ball core 2;
the first groove 64 is formed in the valve rod 5, and the first groove 64 corresponds to the first cavity 61 and is communicated with the second cavity 63;
the piston rod 65 is installed in the second cavity 63 in a sliding mode;
the telescopic rod 66 comprises a cylinder body, a rod body and a first spring 661, the cylinder body of the telescopic rod 66 is horizontally and fixedly installed at the bottom of the piston rod 65, the first spring 661 is fixedly installed inside the cylinder body of the telescopic rod 66, one end of the first spring 661 is fixedly connected with the inner surface of the side wall of the cylinder body of the telescopic rod 66, which is close to the piston rod 65, and the other end of the first spring 661 is fixedly connected with one end, close to the piston rod 65, of the rod body which is in sliding connection with the telescopic rod 66; one end of the rod body of the telescopic rod 66, which is far away from the piston rod 65, is rotatably connected with a first scraping rod 662.
When the valve works, if the valve body 1 is in a long-time conducting state in advance, scale is easy to condense on the inner wall of the ball core 2, and the use of the ball core 2 is influenced by the accumulation of the scale; when the valve body 1 needs to be closed, gas is introduced into the cylinder body through the pneumatic actuator 4, so that the internal air pressure of the cylinder body is increased, the piston moves towards two sides of the cylinder body, the rack drives the valve rod 5 to rotate, and then the ball core 2 is driven to rotate, so that the valve body 1 is closed; in the process, in the process of introducing gas into the cylinder body, the gas enters the first cavity 61 through the first pipe 62 and then enters the first groove 64 from the first cavity 61, the gas enters the second cavity 63 from the first groove 64, the pressure in the second cavity 63 rises to push the piston rod 65 to move downwards, because the telescopic rod 66 is horizontally and fixedly arranged at the bottom of the piston rod 65, and the first spring 661 is fixedly arranged in the telescopic rod 66, the telescopic rod 66 is driven to move downwards in the process of moving the piston rod 65, one end of the telescopic rod 66 far away from the piston rod 65 is rotatably connected with the first scraping rod 662, the first spring 661 is arranged in the telescopic rod 66 to enable the telescopic rod 66 to stretch and retract, and the first spring 661 is always in a compression state, namely, the rod body of the telescopic rod 66 can always abut against the inner wall of the ball core 2, namely, the first scraping rod is always attached to the inner wall of the ball core 2, and in the process of moving the piston rod 65 downwards, the first scraping rod 662 scrapes scale or impurities on the inner wall of the ball core 2; the phenomenon that the use of the ball core 2 is influenced by the excessive condensation of water scale or impurities on the inner wall of the ball core 2 is avoided; the above-mentioned process can automatically control pneumatic clean mechanism 6 and clear up the inner wall of ball core 2 at pneumatic actuating mechanism 4 control ball core 2 pivoted in-process promptly for ball core 2 can clear up the inner wall of ball core 2 after using.
As an embodiment of the present invention, the first scraping rod 662 has a triangular vertical cross-section.
During operation, the vertical cross-section of a scraping rod 662 is triangle-shaped, and there is the inclined plane in a scraping rod 662 for 2 lateral walls of the core, and this setting makes a scraping rod 662 in the in-process that the core 2 removed, can produce the shovel effect to 2 inner walls of the core, and then makes a scraping rod 662 change the incrustation scale or the impurity of 2 inner walls of the core and clear up.
As a specific embodiment of the present invention, a second spring 651 is fixedly connected between the top of the piston rod 65 and the top of the second cavity 63, the first channel 31 is disposed on the bracket 3, the second channel 51 is disposed on the valve rod 5, and the second channel 51 is communicated with the second cavity 63.
The horizontal section of the first groove 64 is a sector with a central angle of 90 degrees; on the horizontal section of the valve rod 5, an included angle between a line a connecting the second channel 51 and the central axis of the valve rod 5, a line b connecting the nearest point on the first groove 64 from the second channel 51 and the central axis of the valve rod 5, and a line b, wherein the included angle is 90 degrees.
In operation, in the process of rotating the ball core 2, i.e. in the process of controlling the valve body 1 to open and close by the ball core 2, the ball core 2 rotates 90 degrees each time, so that the horizontal section provided with the first groove 64 is a sector with a central angle of 90 degrees, as shown in fig. 7, when the ball valve is in a conducting state by the ball core 2, the state of the valve rod 5 is as shown in fig. 7, at this time, the first groove 64 is communicated with the first cavity 61, when the valve rod 5 rotates to drive the ball core 2 to close the valve body 1, since the horizontal section of the first groove 64 is a sector having a central angle of 90 degrees, during the rotation of the valve rod 5, the first groove 64 is always communicated with the first cavity 61, the arrangement is that the first cavity 61 is always inflated into the second cavity 63, when the valve body 1 is closed, the piston rod 65 can drive the telescopic rod 66 and the first scraping rod 662 downwards to scrape the inner wall of the ball core 2 (the second spring 651 is stretched), and the inner wall of the ball core 2 is cleaned; when the valve body 1 is closed by the ball core 2, the state of the valve rod 5 is as shown in fig. 8, at this time, the first cavity 61 is not communicated with the first groove 64, because on the horizontal cross section of the valve rod 5, the line a between the second channel 51 and the central axis of the valve rod 5, the closest point on the first groove 64 from the second channel 51 and the line b between the central axis of the valve rod 5, and the included angle between a and b is 90 degrees, at this time, the second channel 51 is communicated with the first channel 31, further, the gas in the second cavity 63 is discharged through the second channel 51 and the first channel 31, the piston rod 65 is pulled by the second spring 651 and moves upwards, the telescopic rod 66 and the first scraping rod 662 are driven to scrape the inner wall of the ball core 2 again, and secondary cleaning is realized.
As a specific embodiment of the present invention, an electromagnetic valve 621 is fixedly disposed inside the first tube 62, and a third channel 611 is disposed on a side of the first cavity 61 away from the valve rod 5.
In operation, as shown in fig. 3 and 5, when the valve body 1 is always in the conducting state by the ball core 2, or impurities in water are accumulated in the ball core 2 in the conducting state, so that the valve body 1 is blocked, at this time, the electromagnetic valve 621 is closed (in the normal state, the electromagnetic valve 621 is always in the open state), the third channel 611 is opened (in the normal state, the third channel 611 is in the closed state), and an external air pressure source, such as an air cylinder, is passed through the third channel 611; air is filled into and exhausted from the second cavity 63 in a reciprocating mode frequently, the piston rod 65, the telescopic rod 66 and the first scraping rod 662 are driven to reciprocate back and forth to scrape the inner wall of the ball core 2 in a reciprocating mode, scale is cleaned, and the phenomenon that when the ball core 2 is always in a conducting state and the valve body 1 is always in a conducting state, the scale is always condensed on the inner wall of the ball core 2 is reduced; meanwhile, the piston rod 65, the telescopic rod 66 and the first scraping rod 662 reciprocate back and forth to dredge the interior of the ball core 2 in cooperation with the flow of water, so that the phenomenon that the valve body 1 is blocked due to the accumulation of impurities in the water in the ball core 2 is reduced.
As a specific embodiment of the present invention, a top rod 652 is fixedly installed on the top of the piston rod 65.
During operation, the top fixed mounting of piston rod 65 has ejector pin 652, when piston rod 65 reciprocated, ejector pin 652 moved together with piston rod 65, when valve body 1 needed to become the conducting state from the off-state, pneumatic actuator 4 was controlled this moment to the decline of air pressure in the cylinder body, the piston was close to each other in the cylinder body, the rack drove valve rod 5 and rotated, when valve rod 5 rotated, first groove 64 switched on once more with No. 61, the regional air pressure between piston rod 65 top and No. two chamber 63 tops also declined at this moment, set up ejector pin 652's effect and lie in restricting piston rod 65 and move up all the time, crush No. two spring 651, also prevent piston rod 65 from moving up all the time simultaneously, prevent that piston rod 65 from plugging up No. one groove 64, make during next operation gaseous can not get into No. two chamber 63 through No. 64, and then guaranteed that the device can normally work.
As a specific embodiment of the present invention, one end of the telescopic rod 66 away from the piston rod 65 is rotatably connected with a first rod 663 and a second rod 664, the first rod 663 is located above the telescopic rod 66, the second rod 664 is located below the telescopic rod 66, and one ends of the first rod 663 and the second rod 664 away from the telescopic rod 66 are respectively rotatably connected with a second scraping rod 665.
As a specific embodiment of the present invention, a torsion spring is disposed at a connection between the first rod 663, the second rod 664 and the expansion rod 66.
When the ball core scraping mechanism works, one end of the telescopic rod 66, which is far away from the piston rod 65, is rotatably connected with a first rod 663 and a second rod 664, the first rod 663 is positioned above the telescopic rod 66, the second rod 664 is positioned below the telescopic rod 66, one ends of the first rod 663 and the second rod 664, which are far away from the telescopic rod 66, are respectively rotatably connected with a second scraping rod 665, a torsion spring is fixedly arranged at the connection part of the first rod 663 and the second rod 664 and the telescopic rod 66, and when the second scraping rod 665 at the end parts of the first rod 663 and the second rod 664 contacts the inner wall of the ball core 2, the torsion springs at the connection part of the first rod 663 and the second rod 664 enable the first rod 663 and the second scraping rod 665 at the end parts to have a tendency of being far away from the telescopic rod 66 and extruding the inner wall of the ball core 2; because the telescopic rod 66 has the shortest length, when the piston rod 65 moves up and down, the piston rod 65 is prevented from continuously moving up or down due to the blocking of the telescopic rod 66, that is, the piston rod 65 has a movement stroke, so that the first scraping rod 662 has a scraping blind area, and the first rod 663 and the second rod 664 are arranged, so that when the piston rod 65 moves up and down, the first rod 663 and the second rod 664 can scrape scale or impurities at the scraping blind area; the scraping effect is ensured.
The specific working process is as follows:
if the valve body 1 is in a long-time conducting state in advance, scale is easy to condense on the inner wall of the ball core 2, and the use of the ball core 2 is influenced by the accumulation of the scale; when the valve body 1 needs to be closed, gas is introduced into the cylinder body through the pneumatic actuator 4, so that the internal air pressure of the cylinder body is increased, the piston moves towards two sides of the cylinder body, the rack drives the valve rod 5 to rotate, and then the ball core 2 is driven to rotate, so that the valve body 1 is closed; in the process, in the process of introducing gas into the cylinder body, the gas enters the first cavity 61 through the first pipe 62 and then enters the first groove 64 from the first cavity 61, the gas enters the second cavity 63 from the first groove 64, the pressure in the second cavity 63 rises to push the piston rod 65 to move downwards, because the telescopic rod 66 is horizontally and fixedly arranged at the bottom of the piston rod 65, and the first spring 661 is fixedly arranged in the telescopic rod 66, the telescopic rod 66 is driven to move downwards in the process of moving the piston rod 65, one end of the telescopic rod 66 far away from the piston rod 65 is rotatably connected with the first scraping rod 662, the first spring 661 is arranged in the telescopic rod 66 to enable the telescopic rod 66 to stretch and retract, and the first spring 661 is always in a compression state, namely, the telescopic rod 66 can always abut against the inner wall of the ball core 2, namely, the first scraping rod is always attached to the inner wall of the ball core 2, and in the process of moving the piston rod 65 downwards 662, the first scraping rod 662 scrapes scale on the inner wall of the ball core 2; the phenomenon that the use of the ball core 2 is influenced due to the fact that scale on the inner wall of the ball core 2 is too thick in condensation is avoided; in addition, when the valve body 1 is always in the conducting state by the ball core 2, or when impurities in water are accumulated in the ball core 2 in the conducting state to block the valve body 1, at this time, the electromagnetic valve 621 is closed (in a normal state, the electromagnetic valve 621 is always in an open state), and the third channel 611 is opened (in a normal state, the third channel 611 is in a closed state), and an external air pressure source, such as an air cylinder, passes through the third channel 611; air is filled into and exhausted from the second cavity 63 in a reciprocating mode frequently, the piston rod 65, the telescopic rod 66 and the first scraping rod 662 are driven to reciprocate back and forth to scrape the inner wall of the ball core 2 in a reciprocating mode, scale is cleaned, and the phenomenon that when the ball core 2 is always in a conducting state and the valve body 1 is always in a conducting state, the scale is always condensed on the inner wall of the ball core 2 is reduced; meanwhile, the piston rod 65, the telescopic rod 66 and the first scraping rod 662 reciprocate back and forth to dredge the interior of the ball core 2 in cooperation with the flow of water, so that the phenomenon that the valve body 1 is blocked due to the accumulation of impurities in the water in the ball core 2 is reduced.
The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present 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 described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A use method of a self-cleaning pneumatic valve is characterized by comprising the following steps: the using method comprises the following steps:
s1: the valve body (1) is arranged in a pipeline, gas is introduced into a cylinder body of the pneumatic actuating mechanism (4) through an external gas pressure source, the gas pressure in the cylinder body rises, a piston in the cylinder body moves towards two sides of the cylinder body, a rack on the piston drives a valve rod (5) to rotate, the valve rod (5) drives a ball core (2) to rotate, and the valve body (1) is turned off from conduction in the rotating process of the ball core (2); similarly, gas is pumped into the cylinder body of the pneumatic actuating mechanism (4) through an external gas pressure source, the gas pressure in the cylinder body is reduced, so that a piston in the cylinder body moves to the middle part of the cylinder body, in the motion process of the piston, the rack drives the valve rod (5) to rotate, and further drives the ball core (2) to rotate, and in the rotation process of the ball core (2), the valve body (1) is switched from off to on;
s2: when the valve body (1) needs to be closed, gas is introduced into the cylinder body through the pneumatic actuator (4), the gas enters the first cavity (61) through the first pipe (62), then enters the first groove (64) from the first cavity (61), the gas enters the second cavity (63) from the first groove (64), the air pressure in the second cavity (63) rises, the piston rod (65) is pushed to move downwards, the telescopic rod (66) is driven to move downwards in the downward movement process of the piston rod (65), one end, far away from the piston rod (65), of the telescopic rod (66) is rotatably connected with a first scraping rod (662), the first scraping rod (662) is always attached to the inner wall of the ball core (2), and in the downward movement process of the piston rod (65), the first scraping rod (662) scrapes scale on the inner wall of the ball core (2);
s3: when the valve body (1) is always in a conducting state by the ball core (2), or in the conducting state, impurities in water are accumulated in the ball core (2) to cause the valve body (1) to be blocked, at the moment, the electromagnetic valve (621) is closed, the third channel (611) is opened, and the air pressure source outside the third channel (611) is used for filling air into and extracting air out of the second cavity (63) frequently in a reciprocating manner, so that the piston rod (65), the telescopic rod (66) and the first scraping rod (662) are driven to reciprocate up and down to scrape the inner wall of the ball core (2) in a reciprocating manner, and scale is cleaned; meanwhile, the piston rod (65), the telescopic rod (66) and the first scraping rod (662) reciprocate up and down to cooperate with the flowing of water to dredge the interior of the ball core (2), so that the accumulation of impurities in the water in the ball core (2) is reduced.
2. A self-cleaning pneumatic valve, characterized by: the self-cleaning, pneumatically actuated valve is adapted for use in the method of claim 1, comprising:
a valve body (1);
the ball core (2), the said ball core (2) is set up in the valve block (1) movably;
the support (3), the said support (3) is fixedly mounted to the top of the valve block (1);
the pneumatic actuating mechanism (4), the said pneumatic actuating mechanism (4) is set up in the top of the support (3);
the valve rod (5) is fixedly connected to the top of the ball core (2) and penetrates through the support (3) to extend into the pneumatic actuating mechanism (4), and the pneumatic actuating mechanism (4), the valve rod (5) and the ball core (2) are mutually matched to realize the opening and closing of the valve body (1);
the pneumatic cleaning mechanism (6) is controlled by the pneumatic actuating mechanism (4) to move up and down in the ball core (2) so as to clean the interior of the ball core (2).
3. A self-cleaning, pneumatically actuated valve as recited in claim 2, wherein: the pneumatic cleaning mechanism (6) comprises:
the first cavity (61), the first cavity (61) is arranged in the support (3);
the first pipe (62) penetrates through the support (3) and is communicated with the first cavity (61) and the interior of a cylinder body of the pneumatic actuating mechanism (4);
the second cavity (63) is formed in the valve rod (5) and communicated with the inside of the ball core (2);
the first groove (64) is formed in the valve rod (5), and the first groove (64) corresponds to the first cavity (61) and is communicated with the second cavity (63);
the piston rod (65), the said piston rod (65) is mounted in the second cavity (63) slidably;
the telescopic rod (66) comprises a barrel body, a rod body and a first spring (661), the barrel body of the telescopic rod (66) is horizontally and fixedly installed at the bottom of the piston rod (65), the first spring (661) is fixedly installed inside the barrel body of the telescopic rod (66), one end of the first spring (661) is fixedly connected with the inner surface of the side wall, close to the piston rod (65), of the barrel body of the telescopic rod (66), and the other end of the first spring (661) is fixedly connected with one end, close to the piston rod (65), of the rod body of the telescopic rod (66); one end of the rod body of the telescopic rod (66) far away from the piston rod (65) is rotatably connected with a first scraping rod (662).
4. A self-cleaning, pneumatically actuated valve as recited in claim 3, wherein: the vertical section of the first scraping rod (662) is triangular.
5. A self-cleaning, pneumatically actuated valve as recited in claim 3, wherein: no. two springs (651) have been linked firmly between the top of piston rod (65) and the top of No. two chamber (63), No. one passageway (31) have been seted up on support (3), No. two passageway (51) have been seted up on valve rod (5), No. two passageway (51) and No. two chamber (63) intercommunication.
6. A self-cleaning, pneumatically actuated valve as recited in claim 5, wherein: the horizontal section of the first groove (64) is a sector with a central angle of 90 degrees; on the horizontal section of the valve rod (5), the connecting line a between the second channel (51) and the central axis of the valve rod (5), the nearest point on the first groove (64) from the second channel (51) and the connecting line b between the central axis of the valve rod (5), and the included angle between the a and the b is 90 degrees.
7. A self-cleaning, pneumatically actuated valve as recited in claim 3, wherein: a solenoid valve (621) is fixedly arranged in the first pipe (62), and a third channel (611) is formed in one side, far away from the valve rod (5), of the first cavity (61).
8. A self-cleaning, pneumatically actuated valve as recited in claim 7, wherein: and the top of the piston rod (65) is fixedly provided with a mandril (652).
9. A self-cleaning, pneumatically actuated valve as recited in claim 3, wherein: one end of the telescopic rod (66) far away from the piston rod (65) is rotatably connected with a first rod (663) and a second rod (664), the first rod (663) is located above the telescopic rod (66), the second rod (664) is located below the telescopic rod (66), and one ends of the first rod (663) and the second rod (664) far away from the telescopic rod (66) are respectively rotatably connected with a second scraping rod (665).
10. A self-cleaning, pneumatically actuated valve as recited in claim 3, wherein: torsion springs are arranged at the joints of the first rod (663), the second rod (664) and the telescopic rod (66).
CN202210511987.8A 2022-05-11 2022-05-11 Self-cleaning pneumatic valve and using method thereof Pending CN114811092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210511987.8A CN114811092A (en) 2022-05-11 2022-05-11 Self-cleaning pneumatic valve and using method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210511987.8A CN114811092A (en) 2022-05-11 2022-05-11 Self-cleaning pneumatic valve and using method thereof

Publications (1)

Publication Number Publication Date
CN114811092A true CN114811092A (en) 2022-07-29

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Application Number Title Priority Date Filing Date
CN202210511987.8A Pending CN114811092A (en) 2022-05-11 2022-05-11 Self-cleaning pneumatic valve and using method thereof

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116329212A (en) * 2023-03-30 2023-06-27 帕克(无锡)阀门有限公司 Self-cleaning adjusting ball valve and use method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116329212A (en) * 2023-03-30 2023-06-27 帕克(无锡)阀门有限公司 Self-cleaning adjusting ball valve and use method thereof
CN116329212B (en) * 2023-03-30 2023-11-17 帕克(无锡)阀门有限公司 Self-cleaning adjusting ball valve and use method thereof

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