CN111779851A

CN111779851A - Three-way flow-dividing pressure regulating valve with director

Info

Publication number: CN111779851A
Application number: CN202010548285.8A
Authority: CN
Inventors: 华鑫美; 方翔; 李培华
Original assignee: Zhejiang Yongsheng Technology Co ltd
Current assignee: Zhejiang Yongsheng Technology Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-10-16
Anticipated expiration: 2040-06-16
Also published as: CN111779851B

Abstract

The invention relates to a valve, in particular to a three-way flow-dividing pressure regulating valve with a director. Take commander tee bend reposition of redundant personnel pressure regulating valve, including the valve body that has water inlet and delivery port, can dismantle valve gap, disk seat, case and the valve rod of being connected with the valve body, still include: the adjusting box is used for adjusting the pressure of the valve rod, an adjusting diaphragm is arranged in the adjusting box, and the adjusting diaphragm is connected with the valve rod; the commander is used for controlling the stress of the adjusting diaphragm in the adjusting box; the supporting frame is used for connecting the adjusting box and the commander, the section of the supporting frame is concave, one end of the supporting frame is fixedly connected with the adjusting box, and the commander is fixedly connected on the end face of the other end of the supporting frame. The invention has the advantages of effectively carrying out mechanical automatic pressure regulation according to the pressure change of the water outlet, improving the regulation response efficiency of the whole valve when the pressure of the water outlet changes, and the like.

Description

Three-way flow-dividing pressure regulating valve with director

Technical Field

The invention relates to a valve, in particular to a three-way flow-dividing pressure regulating valve with a director.

Background

The existing regulating valve realizes the regulation of medium flow by regulating the gap between a valve core and a valve seat, and the valve core performs control operation by the axial displacement of a valve rod. For high-pressure fluid media, the medium pressure is large, the slight fluctuation can enable the pressure change of the water outlet and the water inlet to be obviously different, and when the pressure of the water outlet changes, the existing valve cannot be adjusted in time according to the variable quantity, so that the response efficiency of adjusting the regulating valve is low, and the regulating precision is low. The other regulating valve has complex regulating structure and higher cost, is easy to cause unstable regulation by means of a sensor, a circuit and the like, and cannot automatically compensate by means of a mechanical mode.

Disclosure of Invention

The invention mainly aims at the problems and provides the three-way shunting pressure regulating valve with the director, which can effectively and automatically regulate pressure mechanically according to the pressure change of the water outlet and improve the regulation response efficiency of the whole valve when the pressure of the water outlet changes.

The purpose of the invention is mainly realized by the following scheme: the utility model provides a take commander tee bend reposition of redundant personnel pressure regulating valve, includes the valve body that has water inlet and delivery port, can dismantle valve gap, disk seat, case and the valve rod of being connected with the valve body, still includes: the adjusting box is used for adjusting the pressure of the valve rod, an adjusting diaphragm is arranged in the adjusting box, and the adjusting diaphragm is connected with the valve rod; the commander is used for controlling the stress of the adjusting diaphragm in the adjusting box; the supporting frame is used for connecting the adjusting box and the commander, the section of the supporting frame is concave, one end of the supporting frame is fixedly connected with the adjusting box, and the commander is fixedly connected on the end face of the other end of the supporting frame. High-pressure medium enters the valve body from the water inlet and flows to the water outlet through the gap between the valve seat and the valve core to be discharged, when pressure change occurs at the water outlet, the displacement of the adjusting diaphragm in the adjusting box can be realized through the pressure change in the commander, the displacement of the valve rod is driven by the displacement of the adjusting diaphragm, and then the adjustment of the gap between the valve core and the valve seat is realized. The support frame cross-section is "concave" style of calligraphy, and the support frame can adopt sheet metal piece shaping of bending promptly, support frame one end and regulating box fixed connection, and other end terminal surface can be used for supporting the commander, and the size of support frame can be adjusted according to actual conditions, and then the corresponding position of adjustment commander and regulating box. Whole device utilizes mechanical structure's mode, experiences the pressure change of the pressure of water inlet and delivery port through the commander, utilizes the pressure change control regulating box's of commander the removal of the regulation diaphragm in, adopts the removal of adjusting the diaphragm to drive the valve rod and removes, adopts village mechanical type transmission structure, transmission pressure that can be more stable, realizes valve outlet pressure's automatic adjustment.

Preferably, the regulating box comprises an upper box body and a lower box body, the regulating diaphragm is positioned between the upper box body and the lower box body, the part between the regulating diaphragm and the upper box body is an upper pressure regulating cavity, the part between the regulating diaphragm and the lower box body is a lower pressure regulating cavity, a regulating spring is arranged between the regulating diaphragm and the lower box body, and the upper pressure regulating cavity and the lower pressure regulating cavity are respectively connected with the commander. The adjusting box is formed by splicing an upper box body and a lower box body, an adjusting diaphragm is arranged between the upper box body and the lower box body, the upper part of the adjusting diaphragm is an upper pressure regulating cavity, the lower part of the adjusting diaphragm is a lower pressure regulating cavity, and the adjusting diaphragm is supported and pre-tightened by an adjusting spring. When the commander feels the delivery port of valve body and the pressure variation of water inlet, utilize the commander directly to transmit the pressure variation to in the pressure regulating chamber and the pressure regulating chamber down. When the pressure of the upper pressure regulating cavity is increased and is larger than the sum of the pressure of the lower pressure regulating cavity and the pretightening force of the regulating spring, the regulating diaphragm is pushed downwards and extrudes the regulating spring, so that the valve rod moves downwards, the valve core is far away from the valve seat, the flow of the valve is increased, and the pressure of the water outlet is increased. When the pressure of the lower pressure regulating cavity is increased, the internal pressure of the lower pressure regulating cavity and the pretightening force of the regulating spring push the regulating diaphragm to move upwards, so that the valve rod is pulled to move upwards, the gap between the valve core and the valve seat is reduced, and the pressure of the water outlet is reduced.

Preferably, the commander comprises a commander body, an upper sealed cavity and a lower sealed cavity, an upper adjusting mechanism is arranged between the upper sealed cavity and the commander body, a lower adjusting mechanism is arranged between the lower sealed cavity and the commander body, an inlet runner, a first outlet runner and a second outlet runner are arranged on the commander body, one end of the inlet runner is connected with the water inlet, the other end of the inlet runner corresponds to the lower adjusting mechanism, the second outlet runner is communicated with the upper part of the lower adjusting mechanism and communicated with the upper pressure-regulating cavity through a pipeline, the first outlet runner corresponds to the upper adjusting mechanism, the first outlet runner is communicated with the lower pressure-regulating cavity through a pipeline, a feedback port is also arranged below the lower adjusting mechanism at the lower sealed cavity, and the feedback port is connected with the water outlet. The water inlet is communicated with an inlet flow channel of the commander body, the pressure of the water inlet is transmitted into the commander body, the water outlet is communicated with a lower sealing cavity of the commander, and the pressure of the water outlet is transmitted into the lower sealing cavity of the commander and is positioned below the lower adjusting mechanism. When the pressure of the water outlet is increased, the stress below the lower adjusting mechanism is increased and adjusted upwards, the aperture gap of the inlet flow channel is blocked, the entered high-pressure medium enters the upper sealing cavity, at the moment, the pressure of the high-pressure medium in the upper sealing cavity, which reaches the lower pressure regulating cavity of the adjusting box through the first outlet flow channel, is increased, the pressure of the high-pressure medium above the lower adjusting mechanism in the lower sealing cavity, which enters the upper pressure regulating cavity of the adjusting box through the pipeline, is reduced, the adjusting diaphragm moves upwards, the valve rod and the valve core are driven to move upwards, the gap between the valve core and the valve seat is reduced, the pressure at the water outlet is reduced, and the pressure adjustment is realized. When the pressure of the water outlet is reduced, the pressure sensed by the feedback port is reduced, the lower adjusting mechanism moves downwards, the pressure of the first outlet flow channel flowing into the lower pressure adjusting cavity of the adjusting box is reduced, the pressure of the second outlet flow channel flowing into the upper pressure adjusting cavity of the adjusting box is increased, the adjusting diaphragm moves downwards to drive the valve rod and the valve core to move downwards, so that the gap between the valve core and the valve seat is increased, the pressure of the water outlet is increased, and the pressure adjustment is realized. In the whole pressure regulating process, the pressure change of the water outlet is fed back to the feedback port, the upward movement or the downward movement of the regulating mechanism is regulated by utilizing the pressure change of the feedback port, and then the pressure difference between the upper sealing cavity and the lower sealing cavity is regulated, so that the pressure change of the first outlet flow channel and the pressure change of the second outlet flow channel flowing into the upper pressure regulating cavity and the lower pressure regulating cavity in the regulating box are realized, and the automatic displacement of the regulating membrane is finally realized.

Preferably, the upper adjusting mechanism comprises an upper diaphragm and a first adjusting spring positioned above the upper diaphragm, and the lower adjusting mechanism comprises a lower diaphragm and a second adjusting spring positioned below the lower diaphragm. The pretightening force of the first adjusting spring can directly act on the upper diaphragm, the pretightening force of the second adjusting spring can directly act on the lower diaphragm, and the setting of the compression size of the upper diaphragm and the lower diaphragm can be realized through the selection of the pretightening force of the first adjusting spring and the pretightening force of the second adjusting spring.

Preferably, the inner bottom surface of the lower sealing cavity is provided with an adjusting block, the bottom surface of the adjusting block is provided with an adjusting bolt, the adjusting bolt penetrates through the bottom of the lower sealing cavity and is in threaded connection with the bottom of the lower sealing cavity, and the lower end of the lower adjusting spring abuts against the adjusting block; go up the sunken shell fragment portion that is provided with of box direction down in middle part orientation of box, shell fragment portion thickness be less than last box thickness and with last box integrated into one piece, adjusting bolt keeps away from the one end of regulating block and corresponds and welded fastening perpendicularly with shell fragment portion, and adjusting bolt is last to fix the cover to be equipped with the regulation that is used for rotatory adjusting screw and revolves mother. The feedback port and the second outlet flow channel are both positioned at the lower sealing cavity, the lower adjusting mechanism serves as a part with the largest stress change of the whole director, the deformation frequency of the second adjusting spring is highest, fatigue strength is easy to generate, and the pretightening force of the lower adjusting mechanism is reduced. And a regulating block is arranged in the lower sealing cavity, the second regulating spring is abutted against the regulating block, and the regulating block is moved up and down by utilizing a regulating bolt penetrating through the commander. When the pretightening force of the second adjusting spring is reduced due to fatigue strength, the adjusting block can move upwards, the distance between the adjusting block and the lower diaphragm is reduced, the second adjusting spring is further compressed, and the pretightening force of the second adjusting spring to the lower diaphragm is increased. When the pretightening force of the second adjusting spring is too large, the adjusting block can move downwards, the distance between the adjusting block and the lower diaphragm is increased, and the pretightening force of the second adjusting spring on the lower diaphragm is further reduced. The middle part of the upper box body of the adjusting box is sunken towards the direction of the lower box body to form an elastic sheet part, namely, the elastic sheet part is sunken towards the direction of the upper pressure adjusting cavity in the initial state. When the second adjusting spring is fatigued to cause the pretightening force to be reduced, the pressure in the lower sealing cavity is always kept in a larger state, namely the pressure in the upper pressure adjusting cavity is always kept in a larger state, and the pressure at the water outlet is always kept in a larger state. At the moment, the adjusting nut on the adjusting bolt is rotated to enable the adjusting bolt to move towards the direction of the commander and to be away from the adjusting box, at the moment, the adjusting block moves towards the direction of the lower diaphragm to extrude the second adjusting spring, and the pre-tightening force of the adjusting spring is increased. When adjusting bolt upward movement, because adjusting bolt bottom and the shell fragment portion fixed weld of last box, can pull the shell fragment portion upward movement when adjusting bolt upward movement, because shell fragment portion thickness is less than last box, can make the shell fragment portion have upwards bounced holding power after surpassing with the flush position in plane of last box place, this holding power can directly act on adjusting bolt, plays the supporting role to adjusting bolt's regulation. The elastic sheet part is formed into the outward arched moment through the original inward concave deformation, the elastic sheet part has an instantaneous bouncing trend, the instantaneous bouncing trend enables the volume of an upper pressure regulating cavity of the regulating box to be increased instantaneously, at the moment, the pressure of a medium in a second outlet flow channel connected with the upper pressure regulating cavity is reduced due to the increase of the pretightening force of a second regulating spring, so that the negative pressure of the regulating diaphragm which is upwards drawn is changed when the volume of the upper pressure regulating cavity is increased instantaneously, the regulating diaphragm is upwards moved instantaneously at the regulating moment and drives the valve rod and the valve core to upwards move, and the pressure of the water outlet is instantaneously reduced and tends to be balanced. On the contrary, when the adjusting bolt moves downwards, the elastic sheet part is instantly sunken, the volume of the upper pressure regulating cavity is directly changed by the upper box body of the adjusting box, and the pressure is directly transmitted to the adjusting diaphragm. The double linkage of the commander and the regulating box in the regulating process of the second regulating spring is enhanced, and the pressure regulating change can be generated at the regulating moment of the response efficiency.

Preferably, the middle part of the adjusting bolt is of a disconnecting structure, and a connecting threaded sleeve is arranged at the disconnecting part of the adjusting bolt. Adjusting bolt adopts disconnected structure, has the swivel nut at adjusting bolt disconnection department threaded connection, when need not realize the last box linkage of commander and regulating box, can directly be connected the both ends and the adjusting bolt disconnection department of swivel nut with swivel nut one end disconnection, when the last box linkage of commander and regulating box is realized to needs, can be directly.

Preferably, a valve cage is arranged on the valve seat, one end of the valve cage abuts against the valve seat, the other end of the valve cage abuts against the valve cover, a guide sleeve is arranged inside the valve cage and comprises a connecting ring, a guide sleeve and a supporting arm used for connecting the guide sleeve and the connecting ring, the connecting ring is erected at the upper end of the valve cage, a guide column with the diameter larger than that of the valve rod is arranged in the middle of the valve rod, and the guide column is matched with the guide sleeve. The valve seat is provided with the valve cage, the valve cage is used for compressing the valve seat, the valve cover is used for compressing the upper end of the valve cage, the valve cage and the valve seat are fixed, and the valve cage and the valve seat can be taken out only by opening the valve cover during maintenance. When the valve cage is installed, the guide sleeve is installed inside the valve cage, the connecting ring of the guide sleeve is erected on the edge of the upper end of the valve cage, and the guide sleeve and the valve cage are pressed and fixed together by the valve cover. The valve rod penetrates through the guide sleeve, the guide column of the valve rod is matched with the guide sleeve, the guide sleeve is used for guiding the valve rod in a sliding mode, and the axis of the valve cover is guaranteed to be always kept stable and not to deflect. When the axial displacement of the valve rod is adjusted by utilizing the adjusting diaphragm, the middle part of the valve rod can be guided, and the stability is improved.

Preferably, the regulating diaphragm is bolted to the valve stem.

Therefore, the three-way shunt pressure regulating valve with the director has the following advantages: whole device utilizes mechanical structure's mode, experiences the pressure change of the pressure of water inlet and delivery port through the commander, utilizes the pressure change control regulating box's of commander the removal of the regulation diaphragm in, adopts the removal of adjusting the diaphragm to drive the valve rod and removes, adopts village mechanical type transmission structure, transmission pressure that can be more stable, realizes valve outlet pressure's automatic adjustment.

Drawings

FIG. 1 is a schematic view of the structure of the present invention in example 1;

FIG. 2 is a schematic view of the structure at the regulating box in embodiment 1;

FIG. 3 is a schematic view of the structure of the commander in embodiment 1;

FIG. 4 is a schematic structural view showing the connection of the adjustment box and the commander in embodiment 2.

Illustration of the drawings: 1-a valve body, 2-a water inlet, 3-a water outlet, 4-a valve seat, 5-a valve core, 6-a valve rod, 7-a valve cover, 8-a valve cage, 9-a connecting ring, 10-a supporting arm, 11-a guide sleeve, 12-a guide column, 13-a supporting frame, 14-a director, 15-a regulating box, 16-an upper box body, 17-a lower box body, 18-a regulating membrane, 19-an upper pressure regulating cavity, 20-a lower pressure regulating cavity, 21-a regulating spring, 22-an upper sealing cavity, 23-a lower sealing cavity, 24-a director body, 25-an inlet flow passage, 26-a first outlet flow passage, 27-a second outlet flow passage, 28-a feedback port, 29-an upper membrane, 30-a first regulating spring and 31-a lower membrane, 32-a second adjusting spring, 33-an adjusting block, 34-an adjusting bolt, 35-a thread sleeve and 36-a spring piece part.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example 1: as shown in fig. 1, 2 and 3, a three-way flow-dividing pressure regulating valve with a director comprises a valve body 1 with a water inlet 2 and a water outlet 3, a valve cover 7 detachably connected with the valve body, a valve seat 4, a valve core 5 and a valve rod 6, and further comprises: the adjusting box 15 is used for adjusting the pressure of the valve rod, an adjusting diaphragm is arranged in the adjusting box, and the adjusting diaphragm is connected with the valve rod; and the commander 14 is used for controlling the stress of the regulating membrane in the regulating box. The regulating box comprises an upper box body 16 and a lower box body 17, a regulating diaphragm 18 is positioned between the upper box body and the lower box body, an upper pressure regulating cavity 19 is arranged between the regulating diaphragm and the upper box body, a lower pressure regulating cavity 20 is arranged between the regulating diaphragm and the lower box body, a regulating spring 21 is arranged between the regulating diaphragm and the lower box body, and the upper pressure regulating cavity and the lower pressure regulating cavity are respectively connected with the commander. The commander comprises a commander body 24, an upper sealing cavity 22 and a lower sealing cavity 23, wherein an upper adjusting mechanism is arranged between the upper sealing cavity and the commander body, a lower adjusting mechanism is arranged between the lower sealing cavity and the commander body, an inlet flow passage 25, a first outlet flow passage 26 and a second outlet flow passage 27 are arranged on the commander body, one end of the inlet flow passage is connected with a water inlet, the other end of the inlet flow passage corresponds to the lower adjusting mechanism, the second outlet flow passage is communicated with the upper part of the lower adjusting mechanism and is communicated with the upper pressure adjusting cavity through a pipeline, the first outlet flow passage corresponds to the upper adjusting mechanism, the first outlet flow passage is communicated with the lower pressure adjusting cavity through a pipeline, a feedback port is also arranged below the lower adjusting mechanism at the lower sealing cavity, and the feedback port 28 is connected with a water outlet. The upper adjustment mechanism comprises an upper diaphragm 29 and a first adjustment spring 30 located above the upper diaphragm, and the lower adjustment mechanism comprises a lower diaphragm 31 and a second adjustment spring 32 located below the lower diaphragm. Be connected through support frame 13 between regulating box and the commander, the section of support frame is "concave" style of calligraphy, the one end and the regulating box fixed connection of support frame, commander fixed connection is on the terminal surface of the support frame other end. Be provided with valve cage 8 on the disk seat, the one end butt of valve cage is on the disk seat, and the other end butt of valve cage is on the valve bonnet, and the inside uide bushing that is provided with of valve cage, uide bushing include go-between 9, uide bushing 11 and be used for connecting the support arm 10 of uide bushing and go-between, and the connecting ring erects in the valve cage upper end, and the middle part of valve rod is provided with the guide post 12 that the diameter is greater than the valve rod, and the guide post cooperatees with the uide bushing.

High-pressure medium enters the valve body from the water inlet and flows to the water outlet through the gap between the valve seat and the valve core to be discharged, when pressure change occurs at the water outlet, the displacement of the adjusting diaphragm in the adjusting box can be realized through the pressure change in the commander, the displacement of the valve rod is driven by the displacement of the adjusting diaphragm, and then the adjustment of the gap between the valve core and the valve seat is realized. Whole device utilizes mechanical structure's mode, experiences the pressure change of the pressure of water inlet and delivery port through the commander, utilizes the pressure change control regulating box's of commander the removal of the regulation diaphragm in, adopts the removal of adjusting the diaphragm to drive the valve rod and removes, adopts village mechanical type transmission structure, transmission pressure that can be more stable, realizes valve outlet pressure's automatic adjustment. The adjusting box is formed by splicing an upper box body and a lower box body, an adjusting diaphragm is arranged between the upper box body and the lower box body, the upper part of the adjusting diaphragm is an upper pressure regulating cavity, the lower part of the adjusting diaphragm is a lower pressure regulating cavity, and the adjusting diaphragm is supported and pre-tightened by an adjusting spring. When the commander feels the delivery port of valve body and the pressure variation of water inlet, utilize the commander directly to transmit the pressure variation to in the pressure regulating chamber and the pressure regulating chamber down. When the pressure of the upper pressure regulating cavity is increased and is larger than the sum of the pressure of the lower pressure regulating cavity and the pretightening force of the regulating spring, the regulating diaphragm is pushed downwards and extrudes the regulating spring, so that the valve rod moves downwards, the valve core is far away from the valve seat, the flow of the valve is increased, and the pressure of the water outlet is increased. When the pressure of the lower pressure regulating cavity is increased, the internal pressure of the lower pressure regulating cavity and the pretightening force of the regulating spring push the regulating diaphragm to move upwards, so that the valve rod is pulled to move upwards, the gap between the valve core and the valve seat is reduced, and the pressure of the water outlet is reduced. The water inlet is communicated with an inlet flow channel of the commander body, the pressure of the water inlet is transmitted into the commander body, the water outlet is communicated with a lower sealing cavity of the commander, and the pressure of the water outlet is transmitted into the lower sealing cavity of the commander and is positioned below the lower adjusting mechanism. When the pressure of the water outlet is increased, the stress below the lower adjusting mechanism is increased and adjusted upwards, the aperture gap of the inlet flow channel is blocked, the entered high-pressure medium enters the upper sealing cavity, at the moment, the pressure of the high-pressure medium in the upper sealing cavity, which reaches the lower pressure regulating cavity of the adjusting box through the first outlet flow channel, is increased, the pressure of the high-pressure medium above the lower adjusting mechanism in the lower sealing cavity, which enters the upper pressure regulating cavity of the adjusting box through the pipeline, is reduced, the adjusting diaphragm moves upwards, the valve rod and the valve core are driven to move upwards, the gap between the valve core and the valve seat is reduced, the pressure at the water outlet is reduced, and the pressure adjustment is realized. When the pressure of the water outlet is reduced, the pressure sensed by the feedback port is reduced, the lower adjusting mechanism moves downwards, the pressure of the first outlet flow channel flowing into the lower pressure adjusting cavity of the adjusting box is reduced, the pressure of the second outlet flow channel flowing into the upper pressure adjusting cavity of the adjusting box is increased, the adjusting diaphragm moves downwards to drive the valve rod and the valve core to move downwards, so that the gap between the valve core and the valve seat is increased, the pressure of the water outlet is increased, and the pressure adjustment is realized. In the whole pressure regulating process, the pressure change of the water outlet is fed back to the feedback port, the upward movement or the downward movement of the regulating mechanism is regulated by utilizing the pressure change of the feedback port, and then the pressure difference between the upper sealing cavity and the lower sealing cavity is regulated, so that the pressure change of the first outlet flow channel and the pressure change of the second outlet flow channel flowing into the upper pressure regulating cavity and the lower pressure regulating cavity in the regulating box are realized, and the automatic displacement of the regulating membrane is finally realized. The pretightening force of the first adjusting spring can directly act on the upper diaphragm, the pretightening force of the second adjusting spring can directly act on the lower diaphragm, and the setting of the compression size of the upper diaphragm and the lower diaphragm can be realized through the selection of the pretightening force of the first adjusting spring and the pretightening force of the second adjusting spring. The support frame cross-section is "concave" style of calligraphy, and the support frame can adopt sheet metal piece shaping of bending promptly, support frame one end and regulating box fixed connection, and other end terminal surface can be used for supporting the commander, and the size of support frame can be adjusted according to actual conditions, and then the corresponding position of adjustment commander and regulating box. The valve seat is provided with the valve cage, the valve cage is used for compressing the valve seat, the valve cover is used for compressing the upper end of the valve cage, the valve cage and the valve seat are fixed, and the valve cage and the valve seat can be taken out only by opening the valve cover during maintenance. When the valve cage is installed, the guide sleeve is installed inside the valve cage, the connecting ring of the guide sleeve is erected on the edge of the upper end of the valve cage, and the guide sleeve and the valve cage are pressed and fixed together by the valve cover. The valve rod penetrates through the guide sleeve, the guide column of the valve rod is matched with the guide sleeve, the guide sleeve is used for guiding the valve rod in a sliding mode, and the axis of the valve cover is guaranteed to be always kept stable and not to deflect. When the axial displacement of the valve rod is adjusted by utilizing the adjusting diaphragm, the middle part of the valve rod can be guided, and the stability is improved.

Example 2: the structure of the present embodiment is substantially the same as that of embodiment 1, except that, as shown in fig. 4, an adjusting block 33 is disposed on the inner bottom surface of the lower sealing cavity, an adjusting bolt 34 is disposed on the bottom surface of the adjusting block, the adjusting bolt penetrates through the bottom of the lower sealing cavity and is in threaded connection with the bottom of the lower sealing cavity, and the lower end of the lower adjusting spring abuts against the adjusting block; go up the sunken elastic sheet portion 36 that is provided with of box direction down in middle part of box, elastic sheet portion thickness is less than last box thickness and with last box integrated into one piece, and adjusting bolt keeps away from the perpendicular correspondence of one end of regulating block and elastic sheet portion and welded fastening, and adjusting bolt is last fixed cover to be equipped with the regulation that is used for rotatory adjusting screw and revolves mother. The middle part of the adjusting bolt is of a disconnecting structure, and a connecting threaded sleeve 35 is arranged at the disconnecting part of the adjusting bolt.

The feedback port and the second outlet flow channel are both positioned at the lower sealing cavity, the lower adjusting mechanism serves as a part with the largest stress change of the whole director, the deformation frequency of the second adjusting spring is highest, fatigue strength is easy to generate, and the pretightening force of the lower adjusting mechanism is reduced. And a regulating block is arranged in the lower sealing cavity, the second regulating spring is abutted against the regulating block, and the regulating block is moved up and down by utilizing a regulating bolt penetrating through the commander. When the pretightening force of the second adjusting spring is reduced due to fatigue strength, the adjusting block can move upwards, the distance between the adjusting block and the lower diaphragm is reduced, the second adjusting spring is further compressed, and the pretightening force of the second adjusting spring to the lower diaphragm is increased. When the pretightening force of the second adjusting spring is too large, the adjusting block can move downwards, the distance between the adjusting block and the lower diaphragm is increased, and the pretightening force of the second adjusting spring on the lower diaphragm is further reduced. The middle part of the upper box body of the adjusting box is sunken towards the direction of the lower box body to form an elastic sheet part, namely, the elastic sheet part is sunken towards the direction of the upper pressure adjusting cavity in the initial state. When the second adjusting spring is fatigued to cause the pretightening force to be reduced, the pressure in the lower sealing cavity is always kept in a larger state, namely the pressure in the upper pressure adjusting cavity is always kept in a larger state, and the pressure at the water outlet is always kept in a larger state. At the moment, the adjusting nut on the adjusting bolt is rotated to enable the adjusting bolt to move towards the direction of the commander and to be away from the adjusting box, at the moment, the adjusting block moves towards the direction of the lower diaphragm to extrude the second adjusting spring, and the pre-tightening force of the adjusting spring is increased. When adjusting bolt upward movement, because adjusting bolt bottom and the shell fragment portion fixed weld of last box, can pull the shell fragment portion upward movement when adjusting bolt upward movement, because shell fragment portion thickness is less than last box, can make the shell fragment portion have upwards bounced holding power after surpassing with the flush position in plane of last box place, this holding power can directly act on adjusting bolt, plays the supporting role to adjusting bolt's regulation. The elastic sheet part is formed into the outward arched moment through the original inward concave deformation, the elastic sheet part has an instantaneous bouncing trend, the instantaneous bouncing trend enables the volume of an upper pressure regulating cavity of the regulating box to be increased instantaneously, at the moment, the pressure of a medium in a second outlet flow channel connected with the upper pressure regulating cavity is reduced due to the increase of the pretightening force of a second regulating spring, so that the negative pressure of the regulating diaphragm which is upwards drawn is changed when the volume of the upper pressure regulating cavity is increased instantaneously, the regulating diaphragm is upwards moved instantaneously at the regulating moment and drives the valve rod and the valve core to upwards move, and the pressure of the water outlet is instantaneously reduced and tends to be balanced. On the contrary, when the adjusting bolt moves downwards, the elastic sheet part is instantly sunken, the volume of the upper pressure regulating cavity is directly changed by the upper box body of the adjusting box, and the pressure is directly transmitted to the adjusting diaphragm. The double linkage of the commander and the regulating box in the regulating process of the second regulating spring is enhanced, and the pressure regulating change can be generated at the regulating moment of the response efficiency. Adjusting bolt adopts disconnected structure, has the swivel nut at adjusting bolt disconnection department threaded connection, when need not realize the last box linkage of commander and regulating box, can directly be connected the both ends and the adjusting bolt disconnection department of swivel nut with swivel nut one end disconnection, when the last box linkage of commander and regulating box is realized to needs, can be directly.

It should be understood that this example is only for illustrating the present invention and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a take commander tee bend reposition of redundant personnel pressure regulating valve, includes the valve body that has water inlet and delivery port, can dismantle valve gap, disk seat, case and the valve rod of being connected with the valve body, its characterized in that still includes:

the adjusting box is used for adjusting the pressure of the valve rod, an adjusting diaphragm is arranged in the adjusting box, and the adjusting diaphragm is connected with the valve rod;

the commander is used for controlling the stress of the adjusting diaphragm in the adjusting box;

the supporting frame is used for connecting the adjusting box and the commander, the section of the supporting frame is concave, one end of the supporting frame is fixedly connected with the adjusting box, and the commander is fixedly connected on the end face of the other end of the supporting frame.

2. The three-way shunt pressure regulating valve with the pilot valve according to claim 1, wherein the regulating box comprises an upper box body and a lower box body, the regulating diaphragm is positioned between the upper box body and the lower box body, the part between the regulating diaphragm and the upper box body is an upper pressure regulating cavity, the part between the regulating diaphragm and the lower box body is a lower pressure regulating cavity, a regulating spring is arranged between the regulating diaphragm and the lower box body, and the upper pressure regulating cavity and the lower pressure regulating cavity are respectively connected with the pilot valve.

3. The three-way diverter pressure regulator with pilot of claim 2, the commander comprises a commander body, an upper sealing cavity and a lower sealing cavity, wherein an upper adjusting mechanism is arranged between the upper sealing cavity and the commander body, a lower adjusting mechanism is arranged between the lower sealing cavity and the commander body, an inlet runner, a first outlet runner and a second outlet runner are arranged on the commander body, one end of the inlet runner is connected with a water inlet, the other end of the inlet runner corresponds to the lower adjusting mechanism, the second outlet runner is communicated with the upper part of the lower adjusting mechanism and is communicated with the upper pressure adjusting cavity through a pipeline, the first outlet runner corresponds to the upper adjusting mechanism, the first outlet runner is communicated with the lower pressure adjusting cavity through a pipeline, a feedback port is also arranged below the lower adjusting mechanism at the lower sealing cavity, and the feedback port is connected with a water outlet.

4. The piloted three-way shunt pressure regulator of claim 3, wherein the upper adjustment mechanism comprises an upper diaphragm and a first adjustment spring positioned above the upper diaphragm, and the lower adjustment mechanism comprises a lower diaphragm and a second adjustment spring positioned below the lower diaphragm.

5. The three-way shunt pressure regulating valve with the pilot valve according to claim 4, wherein an adjusting block is arranged on the inner bottom surface of the lower sealing cavity, an adjusting bolt is arranged on the bottom surface of the adjusting block, the adjusting bolt penetrates through the bottom of the lower sealing cavity and is in threaded connection with the bottom of the lower sealing cavity, and the lower end of the lower adjusting spring abuts against the adjusting block; go up the sunken shell fragment portion that is provided with of box direction down in middle part orientation of box, shell fragment portion thickness be less than last box thickness and with last box integrated into one piece, adjusting bolt keeps away from the one end of regulating block and corresponds and welded fastening perpendicularly with shell fragment portion, and adjusting bolt is last to fix the cover to be equipped with the regulation that is used for rotatory adjusting screw and revolves mother.

6. The three-way split-flow pressure regulating valve with the commander as claimed in claim 1, 2, 3, 4 or 5, wherein a valve cage is arranged on the valve seat, one end of the valve cage abuts against the valve seat, the other end of the valve cage abuts against the valve cover, a guide sleeve is arranged inside the valve cage, the guide sleeve comprises a connecting ring, a guide sleeve and a supporting arm for connecting the guide sleeve and the connecting ring, the connecting ring is erected at the upper end of the valve cage, a guide post with a diameter larger than that of the valve rod is arranged in the middle of the valve rod, and the guide post is matched with the guide sleeve.

7. The three-way diverter pressure regulating valve according to claim 1, 2, 3, 4 or 5, wherein the regulating diaphragm is bolted to the valve stem.