CN112701007B - Pressure controller easy for positive and negative pressure switching detection - Google Patents
Pressure controller easy for positive and negative pressure switching detection Download PDFInfo
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- CN112701007B CN112701007B CN202011438563.0A CN202011438563A CN112701007B CN 112701007 B CN112701007 B CN 112701007B CN 202011438563 A CN202011438563 A CN 202011438563A CN 112701007 B CN112701007 B CN 112701007B
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- 238000001514 detection method Methods 0.000 title claims description 19
- 238000009434 installation Methods 0.000 claims abstract description 64
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 239000010985 leather Substances 0.000 claims description 26
- 239000012528 membrane Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 abstract description 2
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Abstract
The invention relates to the technical field of machinery. The pressure controller comprises a controller frame and a controller frame cover which are detachably connected, wherein a diaphragm assembly is clamped between the controller frame and the controller frame cover, a lever is hinged on the controller frame, the center of the lever is in transmission connection with the diaphragm assembly, and the diaphragm assembly drives the lever to swing up and down around a hinge point with the controller frame; the controller frame is provided with a first installation position for installing the positive pressure adjusting mechanism and a second installation position for installing the negative pressure adjusting mechanism, and the first installation position and the second installation position are positioned on the upper side and the lower side of the lever; the controller frame is provided with a third installation position for installing the positive pressure microswitch and a fourth installation position for installing the negative pressure microswitch. This patent is applicable to the pressure controller of malleation operating mode or negative pressure operating mode, or the pressure controller of malleation operating mode and negative pressure operating mode monitoring in turn.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a pressure controller.
Background
The pressure controller is a device for pressure control.
The working mechanism of the pressure controller is as follows: when the pressure in the system is higher or lower than the rated safety pressure, the disc in the sensor instantaneously moves, the switch joint is pushed to be switched on or switched off through the connecting guide rod, when the pressure is reduced to or increased to the rated recovery value, the disc is instantaneously reset, the switch automatically resets, or simply, when the measured pressure exceeds the rated value, the free end of the elastic element generates displacement, the switch element is pushed directly or after comparison, the on-off state of the switch element is changed, and the purpose of controlling the measured pressure is achieved.
The existing pressure controller can only realize positive pressure working condition or negative pressure working condition, and at present, the pressure controller which can be simultaneously suitable for the positive pressure working condition or the negative pressure working condition is lacked.
Disclosure of Invention
In view of the problems in the prior art, the present invention provides a pressure controller that facilitates positive and negative pressure switching detection, so as to solve at least one of the above technical problems.
In order to achieve the purpose, the invention provides a pressure controller easy for positive and negative pressure switching detection, which comprises a controller frame and a controller frame cover, wherein the controller frame and the controller frame cover are detachably connected, and a diaphragm assembly is clamped between the controller frame and the controller frame cover;
the controller frame is provided with a first installation position for installing the positive pressure adjusting mechanism and a second installation position for installing the negative pressure adjusting mechanism, and the first installation position and the second installation position are respectively positioned at the upper side and the lower side of the lever;
the controller frame is provided with a third installation position for installing the positive pressure microswitch and a fourth installation position for installing the negative pressure microswitch, and the fourth installation position and the third installation position are respectively positioned above the lever;
the first mounting location and the third mounting location are both located above the right side of the hinge point of the lever and the controller frame;
the second installation position and the fourth installation position are respectively positioned below the right side of the hinged point of the lever and the controller frame and above the left side of the hinged point of the lever and the controller frame.
This patent is through optimizing pressure controller's structure, is applicable to the pressure controller of malleation operating mode or negative pressure operating mode, or the pressure controller of malleation operating mode and negative pressure operating mode monitoring in turn. The positive pressure microswitch and the positive pressure adjusting mechanism, the negative pressure microswitch and the negative pressure adjusting mechanism or the positive pressure microswitch, the positive pressure adjusting mechanism, the negative pressure microswitch and the negative pressure adjusting mechanism are all installed according to requirements.
When the diaphragm assembly senses positive pressure, the diaphragm assembly is driven to move, so that the lever overcomes the pressure of the positive pressure adjusting mechanism to swing, and the positive pressure microswitch is triggered. When the diaphragm assembly senses negative pressure, the diaphragm assembly is driven to move, so that the lever overcomes the pressure of the negative pressure adjusting mechanism to swing, and the negative pressure microswitch is triggered.
The first installation position is an upper installation hole, the positive pressure adjusting mechanism comprises an upper adjusting screw, an upper ejector pin and an upper pressure spring, the bottom of the upper ejector pin is exposed out of the upper installation hole, the upper adjusting screw is in threaded connection with the upper installation hole, and the upper pressure spring is clamped between the upper ejector pin and the upper adjusting screw;
the second mounting position is a lower mounting hole, the negative pressure adjusting mechanism comprises a lower adjusting screw, a lower ejector pin and a lower pressure spring, the top of the lower ejector pin is exposed out of the lower mounting hole, the lower adjusting screw is in threaded connection with the lower mounting hole, and the lower pressure spring is clamped between the lower ejector pin and the lower adjusting screw;
further preferably, the upper adjusting screw is in threaded connection with an upper fixing nut;
and the lower adjusting screw is connected with a lower fixing nut through threads.
The upper fixing nut is used for preventing the positive pressure deviation of the upper adjusting screw. The lower fixing nut prevents the negative pressure of the lower adjusting screw from deviating.
Further preferably, the controller frame is further connected with a limit screw in a threaded manner, the positive pressure adjusting mechanism and the negative pressure adjusting mechanism are respectively provided with one limit screw on the right side, and the two limit screws are respectively positioned on the upper side and the lower side of the lever.
The mechanical limit of the swing amplitude of the lever is convenient to realize.
Preferably, the limit screw is further connected with a locking nut in a threaded manner, and the locking nut abuts against the controller frame. The deviation of the position of the limit screw is avoided.
Preferably, the controller rack cover is provided with a first joint and a second joint which are communicated with each other, the controller rack cover is further provided with a detection hole communicated with the first joint and the second joint, and the detection hole is opposite to the diaphragm assembly.
So that the positive pressure or the negative pressure drives the diaphragm assembly to move.
When positive pressure is input at the first joint and the second joint is blocked, the positive pressure enables the diaphragm component to bulge upwards to drive the connecting column to jack upwards, the right side of the lever is pushed to be tilted, then the positive pressure microswitch contact is pushed, and a signal is sent out; when negative pressure is input at the first joint and the second joint is blocked, the negative pressure enables the diaphragm assembly to be sunken downwards to pull the connecting column to retract downwards, and pulls the lever to tilt the left side of the lever, so that the negative pressure microswitch contact is pushed to send a signal. The realization of being convenient for is in time found blockking up, then switches through positive negative pressure, solves the jam problem.
Preferably, the controller frame is provided with a groove with an opening facing the controller frame, the groove comprises an air cavity and a groove, the air cavity is vertically arranged, the groove is used for movement of the diaphragm assembly, and the air cavity is provided with air holes communicated with the outside.
Further preferably, a connecting column is connected above the membrane assembly;
the controller frame is provided with a through hole for the connecting column to pass through, and the top of the connecting column is hinged with the center of the lever.
The up-and-down swing of the lever is driven by the diaphragm component.
Further preferably, the diaphragm assembly comprises a leather cup, and the outer edge of the leather cup is clamped and fixed between the controller frame and the controller frame cover;
the diaphragm subassembly includes last gasket and lower gasket that sets up from top to bottom, go up the gasket with the lower gasket is located respectively the upper and lower both sides of leather cup central authorities, just gasket, leather cup and lower gasket pass the screw in proper order down, just the screw with spliced pole threaded connection.
The fixing of the diaphragm component and the connecting column is convenient to realize.
Further preferably, the outer edge of the leather cup is provided with an annular protrusion extending upwards;
the top of the controller frame cover is provided with an annular convex part extending upwards;
the controller frame is provided with an annular groove used for being embedded into the annular protrusion, the depth of the annular groove is larger than the axial length of the annular protrusion, and the annular outer convex part is embedded into the annular groove and abuts against the leather cup.
The leather cup is convenient to fix.
Preferably, the third mounting position and the fourth mounting position are arranged adjacently, the third mounting position is provided with two adjacent guide grooves, and the fourth mounting position is two adjacent guide grooves;
malleation micro-gap switch and negative pressure micro-gap switch has all passed the screw, just screw on the malleation micro-gap switch passes the guiding groove of third installation position to it is fixed through the nut, screw on the negative pressure micro-gap switch passes the guiding groove of fourth installation position to it is fixed through the nut.
The position adjustment of the positive pressure microswitch and the negative pressure microswitch is convenient.
The pressure controller which is easy for positive and negative pressure switching detection is assembled by adopting the following steps;
assembling a controller frame;
the lever is hinged with the controller frame;
at least one of the positive pressure adjusting mechanism and the negative pressure adjusting mechanism is arranged on the controller frame;
assembling a diaphragm assembly, wherein the diaphragm assembly is connected with the connecting column;
step three, the diaphragm assembly is pre-fixed on a controller frame, and the connecting column penetrates through a through hole of the controller frame;
the controller frame covers the controller frame, the membrane assembly is clamped by the controller frame and the controller cover, and the controller frame and the controller cover are relatively fixed through screws;
and fourthly, at least one of the positive pressure microswitch and the negative pressure microswitch is arranged on the controller frame.
Drawings
FIG. 1 is a sectional view of embodiment 1 of the present invention;
FIG. 2 is a rear view of embodiment 1 of the present invention;
FIG. 3 is a top view of embodiment 1 of the present invention;
fig. 4 is a bottom view of embodiment 1 of the present invention.
In the figure: 1 is a controller frame cover; 2 is a lower gasket; 3 is an upper gasket; 4 is a controller frame; 5 is a first rivet; 6 is a second rivet; 7 is a lever; 8 is a negative pressure microswitch; 9 is an M3 screw; 10 is a positive pressure microswitch; 11 is an upper pressure spring; 12 is an upper adjusting screw; 13 is an upper fixing nut; 14 is an upper limit screw; 15 is an upper lock nut; 16 is an upper knock pin; 17 is a lower knock pin; 18 is a connecting column; 19 is a lower pressure spring; 20 is a lower lock nut; 21 is a lower limit screw; 22 is a lower fixing nut; 23 is a lower adjusting screw; 24 is a leather cup; a countersunk head screw 25; 26 is a tapping screw; 27 is an M3 nut; air holes are 28.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 4, embodiment 1: the pressure controller easy for positive and negative pressure switching detection comprises a controller frame 4 and a controller frame cover 1 which are detachably connected, wherein a diaphragm assembly is clamped between the controller frame 4 and the controller frame cover 1, the controller frame 4 is hinged with the left end part of a lever 7, the center of the lever 7 is in transmission connection with the diaphragm assembly, and the diaphragm assembly drives the lever 7 to swing up and down around a hinged point with the controller frame 4;
the controller frame 4 is provided with a first installation position for installing the positive pressure adjusting mechanism and a second installation position for installing the negative pressure adjusting mechanism, and the first installation position and the second installation position are respectively positioned at the upper side and the lower side of the lever 7;
the controller is characterized by further comprising a positive-pressure microswitch 10 triggered by positive pressure and a negative-pressure microswitch 8 triggered by negative pressure, wherein a third installation position for installing the positive-pressure microswitch 10 and a fourth installation position for installing the negative-pressure microswitch 8 are arranged on the controller frame 4, and the fourth installation position and the third installation position are respectively positioned above the lever 7;
the first installation position and the third installation position are both positioned above the right side of the hinged point of the lever 7 and the controller frame 4; the second installation position and the fourth installation position are respectively positioned below the right side of the hinged point of the lever 7 and the controller frame 4 and above the left side of the hinged point.
This patent is through optimizing pressure controller's structure, is applicable to the pressure controller of malleation operating mode or negative pressure operating mode. The positive pressure microswitch 10 and the positive pressure adjusting mechanism, the negative pressure microswitch 8 and the negative pressure adjusting mechanism or the positive pressure microswitch 10, the positive pressure adjusting mechanism, the negative pressure microswitch 8 and the negative pressure adjusting mechanism are all installed according to requirements.
When the diaphragm assembly senses positive pressure, the diaphragm assembly is driven to move, so that the lever 7 overcomes the pressure of the positive pressure adjusting mechanism to swing, and the positive pressure microswitch 10 is triggered. When the diaphragm assembly senses negative pressure, the diaphragm assembly is driven to move, so that the lever 7 overcomes the pressure of the negative pressure adjusting mechanism to swing, and the negative pressure microswitch 8 is triggered.
The first installation position is an upper installation hole, the positive pressure adjusting mechanism comprises an upper adjusting screw 12, an upper ejector pin 16 and an upper pressure spring 11, the bottom of the upper ejector pin 16 is exposed out of the upper installation hole, the upper adjusting screw 12 is in threaded connection with the upper installation hole, and the upper pressure spring 11 is clamped between the upper ejector pin 16 and the upper adjusting screw 12;
the second mounting position is a lower mounting hole, the negative pressure adjusting mechanism comprises a lower adjusting screw 23, a lower ejector pin 17 and a lower pressure spring 19, the top of the lower ejector pin 17 is exposed out of the lower mounting hole, the lower adjusting screw 23 is in threaded connection with the lower mounting hole, and the lower pressure spring 19 is clamped between the lower ejector pin 17 and the lower adjusting screw 23;
the upper adjusting screw 12 is in threaded connection with an upper fixing nut 13; the lower adjusting screw 23 is connected with a lower fixing nut 22 through threads. The upper fixing nut 13 prevents the positive pressure deviation of the upper adjusting screw 12. The lower fixing nut 22 prevents the negative pressure of the lower adjusting screw 23 from deviating.
A limit screw is further connected to the controller frame 4 in a threaded manner, one limit screw is mounted on each of the right sides of the positive pressure adjusting mechanism and the negative pressure adjusting mechanism, and the two limit screws are respectively located on the upper side and the lower side of the lever 7. The mechanical limit of the swing amplitude of the lever 7 is facilitated. And the limiting screw is also in threaded connection with a locking nut, and the locking nut abuts against the controller frame 4. The deviation of the position of the limit screw is avoided. The limiting screws comprise an upper limiting screw 14 and a lower limiting screw 21 which are arranged up and down. The upper and lower limit screws 14, 21 are screwed into the upper and lower holes of the controller frame 4 and fastened with the upper and lower lock nuts 15, 20.
The controller frame cover 1 is provided with a first joint and a second joint which are mutually communicated, the controller frame cover 1 is also provided with a detection hole communicated with the first joint and the second joint, and the detection hole is opposite to the diaphragm assembly. So that the positive pressure or the negative pressure drives the diaphragm assembly to move.
When positive pressure is input at the first joint and the second joint is blocked, the positive pressure enables the diaphragm assembly to protrude upwards to drive the connecting column 18 to jack upwards, the right side of the lever 7 is pushed to tilt, and then the contact of the positive pressure microswitch 10 is pushed to send a signal; when negative pressure is input at the first joint and the second joint is blocked, the negative pressure enables the diaphragm assembly to recess downwards to pull the connecting column 18 to retract downwards, and pulls the lever 7 to tilt the left side of the lever, so that the contact of the negative pressure microswitch 8 is pushed to send a signal.
The controller frame 4 is provided with a groove with an opening facing, the groove comprises an air cavity arranged up and down and a groove for the movement of the diaphragm assembly, and the air cavity is provided with an air hole 28 communicated with the outside.
A connecting column 18 is connected above the diaphragm assembly; the controller frame 4 is provided with a through hole for a connecting column 18 to pass through, and the top of the connecting column 18 is hinged with the center of the lever 7. So as to drive the lever 7 to swing up and down through the diaphragm assembly.
The membrane assembly comprises a leather cup 24, and the outer edge of the leather cup 24 is clamped and fixed between the controller frame 4 and the controller frame cover 1; the diaphragm assembly comprises an upper gasket 3 and a lower gasket 2 which are arranged from top to bottom, the upper gasket 3 and the lower gasket 2 are respectively positioned at the upper side and the lower side of the center of the leather cup 24, the lower gasket 2, the leather cup 24 and the lower gasket 2 sequentially penetrate through a countersunk screw 25, and the countersunk screw 25 is in threaded connection with the connecting column 18. The fixation of the membrane module to the connection column 18 is facilitated. The outer edge of the leather cup 24 is provided with an annular protrusion extending upwards; the top of the controller frame cover 1 is provided with an annular convex part extending upwards; the controller frame 4 is provided with an annular groove used for being embedded into the annular protrusion, the depth of the annular groove is larger than the axial length of the annular protrusion, and the annular outer convex part is embedded into the annular groove and is abutted against the leather cup. The leather cup 24 is convenient to fix.
The third installation position and the fourth installation position are arranged adjacently, the third installation position is provided with two adjacent guide grooves, and the fourth installation position is two adjacent guide grooves; the positive pressure micro switch 10 and the negative pressure micro switch 8 both pass through screws, the screws on the positive pressure micro switch 10 pass through the guide grooves of the third installation position and are fixed through nuts, and the screws on the negative pressure micro switch 8 pass through the guide grooves of the fourth installation position and are fixed through nuts. The position adjustment of the positive pressure microswitch 10 and the negative pressure microswitch 8 is facilitated.
The pressure controller which is easy for positive and negative pressure switching detection is assembled by adopting the following steps;
assembling by adopting the following steps;
assembling a controller frame;
the lever is hinged with the controller frame. Specifically, the lever 7 is connected to the controller frame 4 by a second rivet 6.
At least one of the positive pressure adjusting mechanism and the negative pressure adjusting mechanism is installed on the controller frame. Specifically, an upper ejector pin 16 and an upper pressure spring 11 are sequentially placed into a through hole in the upper part of the controller frame 4, and an upper adjusting screw 12 is screwed in and fastened by an upper fixing nut 13; the lower ejector pin 17 and the lower pressure spring 19 are sequentially placed in a through hole below the controller frame 4, and the lower adjusting screw 23 is screwed in and fastened by the lower fixing nut 22.
And (5) installing an upper limiting screw or a lower limiting screw. Specifically, the upper limit screw 14 and the lower limit screw 21 are screwed into the upper and lower holes of the controller frame 4, respectively, and fastened by the upper lock nut 15 and the lower lock nut 20.
And step two, assembling a membrane component, wherein the membrane component is connected with the connecting column. Specifically, the leather cup 24 is clamped between the upper gasket 3 and the lower gasket 2, and a countersunk head screw 25 penetrates through the leather cup 24, the middle through hole of the upper gasket 3 and the middle through hole of the lower gasket 2 to be fastened with the connecting column 18.
Step three, the diaphragm assembly is pre-fixed on a controller frame, and the connecting column penetrates through a through hole of the controller frame;
the controller frame covers the controller frame, the membrane assembly is clamped by the controller frame and the controller cover, and the controller frame and the controller cover are relatively fixed through screws.
Specifically, the connecting column 18 passes through a through hole in the middle of the controller frame 4. The leather cup 24 is embedded into the annular groove of the controller frame 4, the controller frame cover 1 is covered on the controller frame 4, the annular protruding part of the outer ring of the controller frame cover 1 is abutted against the leather cup 24, and the leather cup 24 is fastened between the controller frame cover 1 and the controller frame 4 through the M4 screw 26.
And fourthly, at least one of the positive pressure microswitch and the negative pressure microswitch is arranged on the controller frame. A negative pressure microswitch 8 and a positive pressure microswitch 10 are respectively arranged above the lever 7 and are fastened on the controller frame 4 by an M3 screw 9 and an M3 nut 27.
The principle is as follows: the left side and the right side below the controller frame cover are respectively provided with a joint, when positive pressure is input at the position A and the position B is blocked, the leather cup is upwards protruded by the positive pressure to drive the connecting column to be upwards jacked, the right side of the lever is pushed to be tilted, and then the positive pressure microswitch contact is pushed to send a signal; when negative pressure is input at the position A and the position B is blocked, the leather cup is sunken downwards by the negative pressure to pull the connecting column to retract downwards, the lever is pulled to tilt the left side of the connecting column, the negative pressure microswitch contact is pushed, and a signal is sent.
The simple, light and small pressure controller provided by the invention can adjust positive and negative pressure, and can respectively give a signal when the set positive and negative pressure is reached.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (7)
1. The pressure controller is characterized in that the controller frame is hinged with the left end part of a lever, the center of the lever is in transmission connection with the diaphragm assembly, and the diaphragm assembly drives the lever to swing up and down around a hinged point with the controller frame;
the controller frame is provided with a first installation position for installing the positive pressure adjusting mechanism and a second installation position for installing the negative pressure adjusting mechanism, and the first installation position and the second installation position are respectively positioned at the upper side and the lower side of the lever;
the controller frame is provided with a third installation position for installing the positive pressure microswitch and a fourth installation position for installing the negative pressure microswitch, and the fourth installation position and the third installation position are respectively positioned above the lever;
the first mounting location and the third mounting location are both located above the right side of the hinge point of the lever and the controller frame;
the second installation position and the fourth installation position are respectively positioned below the right side of the hinged point of the lever and the controller frame and above the left side of the hinged point of the lever and the controller frame;
the controller rack cover is provided with a first joint and a second joint which are communicated with each other, the controller rack cover is also provided with a detection hole communicated with the first joint and the second joint, and the detection hole is over against the diaphragm assembly;
a connecting column is connected above the diaphragm assembly;
a through hole for the connecting column to pass through is formed in the controller frame, and the top of the connecting column is hinged with the center of the lever;
when positive pressure is input at the first joint and the second joint is blocked, the positive pressure enables the diaphragm component to bulge upwards to drive the connecting column to jack upwards, the right side of the lever is pushed to be tilted, then the positive pressure microswitch contact is pushed, and a signal is sent out;
when negative pressure is input at the first joint and the second joint is blocked, the negative pressure enables the diaphragm assembly to recess downwards and pulls the connecting column to retract downwards, and pulls the lever to tilt the left side of the connecting column, so that the negative pressure microswitch contact is pushed to send a signal;
then, the problem of blockage is solved by positive and negative pressure switching;
assembling by adopting the following steps;
step one, assembling a controller frame;
the lever is hinged with the controller frame;
at least one of the positive pressure adjusting mechanism and the negative pressure adjusting mechanism is arranged on the controller frame;
assembling a diaphragm assembly, wherein the diaphragm assembly is connected with the connecting column;
step three, the diaphragm assembly is pre-fixed on a controller frame, and the connecting column penetrates through a through hole of the controller frame;
the controller frame covers the controller frame, the membrane assembly is clamped by the controller frame and the controller cover, and the controller frame and the controller cover are relatively fixed through screws;
and fourthly, at least one of the positive pressure microswitch and the negative pressure microswitch is arranged on the controller frame.
2. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the first installation position is an upper installation hole, the positive pressure adjusting mechanism comprises an upper adjusting screw, an upper ejector pin and an upper pressure spring, the bottom of the upper ejector pin is exposed out of the upper installation hole, the upper adjusting screw is in threaded connection with the upper installation hole, and the upper pressure spring is clamped between the upper ejector pin and the upper adjusting screw;
the second mounting position is a lower mounting hole, the negative pressure adjusting mechanism comprises a lower adjusting screw, a lower ejector pin and a lower pressure spring, the top of the lower ejector pin is exposed out of the lower mounting hole, the lower adjusting screw is in threaded connection with the lower mounting hole, and the lower pressure spring is clamped between the lower ejector pin and the lower adjusting screw;
the upper adjusting screw is in threaded connection with an upper fixing nut;
and the lower adjusting screw is connected with a lower fixing nut through threads.
3. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the controller frame is also in threaded connection with a limit screw, the positive pressure adjusting mechanism and the negative pressure adjusting mechanism are respectively provided with one limit screw on the right side, and the two limit screws are respectively positioned on the upper side and the lower side of the lever;
and the limiting screw is also in threaded connection with a locking nut, and the locking nut abuts against the controller frame.
4. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: when positive pressure is input at the first joint and the second joint is blocked, the positive pressure enables the diaphragm component to bulge upwards to drive the connecting column to jack upwards, the right side of the lever is pushed to be tilted, then the positive pressure microswitch contact is pushed, and a signal is sent out; when negative pressure is input at the first joint and the second joint is blocked, the negative pressure enables the diaphragm assembly to be sunken downwards to pull the connecting column to retract downwards, and pulls the lever to tilt the left side of the lever, so that the negative pressure microswitch contact is pushed to send a signal.
5. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the controller frame is provided with a groove with an opening facing, the groove comprises an air cavity arranged up and down and a groove for the movement of the diaphragm assembly, and the air cavity is provided with air holes communicated with the outside.
6. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the diaphragm assembly comprises a leather cup, and the outer edge of the leather cup is clamped and fixed between the controller frame and the controller frame cover;
the diaphragm subassembly includes last gasket and lower gasket that sets up from top to bottom, go up the gasket with the lower gasket is located respectively the upper and lower both sides of leather cup central authorities, just gasket, leather cup and lower gasket pass the screw in proper order down, just the screw with spliced pole threaded connection.
7. A pressure controller susceptible to positive and negative pressure switch detection as claimed in claim 1, wherein: the third installation position and the fourth installation position are arranged adjacently, the third installation position is provided with two adjacent guide grooves, and the fourth installation position is two adjacent guide grooves;
the positive pressure micro switch and the negative pressure micro switch are both provided with screws, the screws on the positive pressure micro switch penetrate through the guide grooves of the third installation position and are fixed through nuts, and the screws on the negative pressure micro switch penetrate through the guide grooves of the fourth installation position and are fixed through nuts.
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| CN202011438563.0A CN112701007B (en) | 2020-12-11 | 2020-12-11 | Pressure controller easy for positive and negative pressure switching detection |
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| CN202011438563.0A CN112701007B (en) | 2020-12-11 | 2020-12-11 | Pressure controller easy for positive and negative pressure switching detection |
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| CN2127519Y (en) * | 1992-07-06 | 1993-02-24 | 文邦容 | Gravity type membrane switch charge level incicator |
| JP2009211826A (en) * | 2008-02-29 | 2009-09-17 | Ueda Seisakusho:Kk | High pressure-withstanding vacuum switch for negative pressure sprinkler system, and pressure-receiving structure as well as vacuum degree detection method of vacuum switch |
| JP3167826U (en) * | 2011-02-28 | 2011-05-19 | 株式会社植田製作所 | High pressure-resistant vacuum switch for negative pressure type sprinkler system and structure of pressure receiving part of vacuum switch |
| CN103542138A (en) * | 2013-11-01 | 2014-01-29 | 深圳市华力大机电技术有限公司 | Airbag type ventilation and drainage positive and negative pressure water hammer control valve group |
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