CN213575680U - Ball valve and governing system - Google Patents

Abstract

The utility model provides a ball valve and governing system belongs to valve technical field, including valve body, case and valve rod, still including pushing away the piece. One end of the ejector piece penetrates into the valve body in a sealing mode, a first rotating groove is arranged on the end face of the ejector piece and connected with the valve body, and the first rotating groove is matched and attached to one end, deviating from the valve rod, of the valve core. The utility model provides a ball valve and governing system, installation ball valve back valve rod up in the pipeline, because first rotatory recess is used for the bearing case to rotate, so two sealing members only need from both sides and case sealing contact can, less to the extrusion force of case. Therefore, the whole friction force is small when the valve core rotates, and the problem that the valve core can be rotated only by large torque is avoided.

Description

Ball valve and governing system

Technical Field

The utility model belongs to the technical field of the valve, more specifically say, relate to a ball valve and governing system.

Background

When installing the ball valve in the pipeline, for the convenience operate and prevent that the valve rod from being corroded the ball valve, generally the valve rod is up. In the ball valve assembly, in order to realize the positioning of the valve core in the valve body and the rotary sealing of the valve core, two sealing parts are required to extrude the valve core with large force from two sides, and due to the dual functions of the extrusion force between the sealing parts and the valve core and the gravity of the valve core, the friction force between the valve core and the sealing ring is large when the valve core rotates, so that the valve core can be rotated by large torque. This drawback is particularly evident in large ball valves, which are not conducive to the implementation of an electric device to control the rotation of the spool.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ball valve and governing system, it is great to aim at solving the current structure and lead to this frictional force when just leading to the case to rotate to need great moment of torsion could rotate the problem of case.

In order to achieve the above object, the utility model adopts the following technical scheme: the ball valve comprises a valve body, a valve core, a valve rod and an ejector piece. One end of the ejector piece penetrates into the valve body in a sealing mode, a first rotating groove is formed in the end face of the ejector piece and connected with the valve body, and the first rotating groove is matched and attached to one end, away from the valve rod, of the valve core.

As another embodiment of the present application, the ejector includes a first ejector shaft. The first ejector shaft is coaxially arranged with the rotation axis of the valve core and is positioned on one side of the valve core far away from the valve rod, one end of the first ejector shaft penetrates into the valve body in a sealing mode, the end face of the first ejector shaft is used for arranging the first rotating groove, and the first rotating groove is connected with the valve body.

As another embodiment of the present application, the ejector comprises a second ejector shaft, a thrust bearing and a bearing housing. The second pushing shaft is coaxially arranged with the rotating axis of the valve core and is positioned on one side of the valve core far away from the valve rod, one end of the second pushing shaft penetrates into the valve body in a sealing mode, a gap is reserved between the end face of the second pushing shaft and the valve core, and the second pushing shaft is connected with the valve body. The thrust bearing is positioned in the valve body and sleeved on the second ejection shaft. The bearing sleeve is located in the valve body, the second pushing shaft is rotatably sleeved with the bearing sleeve, the bearing sleeve faces the end face of the valve core in an abutting mode, and the end face of the bearing sleeve faces the valve core and is used for being provided with a first rotating groove.

As another embodiment of the present application, the valve body has two water flow pipes coaxially disposed, the two water flow pipes are respectively located at two sides of the valve core, and the ball valve further includes a positioning pipe, a first sealing ring and an elastic ring. The positioning pipe is two, and two the positioning pipe is located respectively the case corresponds two the both sides of flowing water pipe, the positioning pipe includes the less first section of external diameter and the great second section of external diameter, one section of first section is sealed to slide and is worn to locate in the positioning pipe of homonymy, the port orientation of second section case and terminal surface are equipped with the holding tank. The first sealing rings are two and are respectively positioned in the two accommodating grooves, and the two first sealing rings are used for being attached and sealed with the valve core from two sides. The two elastic rings are respectively sleeved on the two first sections, and two ends of each elastic ring respectively extrude the corresponding water flowing pipe and the corresponding second section.

As another embodiment of this application, the elasticity circle both ends all are equipped with a plurality of and follow the outside arched elastic part that is of the axial of elasticity circle, elastic part is used for the extrusion the water flowing pipe or the second section.

The utility model provides a ball valve's beneficial effect lies in: compared with the prior art, the valve rod faces upwards when the ball valve is installed in the pipeline, and the first rotary groove is used for supporting the valve core to rotate, so that only small extrusion force is needed when the valve core is sealed. Therefore, the whole friction force is small when the valve core rotates, and the problem that the valve core can be rotated only by large torque is avoided.

In order to achieve the above object, the utility model adopts the following technical scheme: the regulating system is provided with two ball valves, and further comprises a regulating container, a diaphragm, a water supply pipeline, a three-way pipe, a regulating box, a valve plug rod and an elastic assembly. The interior of the adjusting container is fixedly provided with a partition plate, the interior of the adjusting container is divided into a first cavity and a second cavity by the partition plate, and the second cavity is communicated with the water outlet end of the first ball valve. The diaphragm is fixedly arranged in the first cavity and used for dividing the first cavity into a first part and a second part, and the second part is communicated with the water inlet end of the second ball valve. One end of the water supply pipeline is used for being communicated with a water supply device, and the other end of the water supply pipeline is communicated with the water inlet end of the first ball valve. The first branch of the three-way pipe is communicated with the first part, the second branch is communicated with the middle part of the water supply pipeline, the third branch is communicated with the water inlet end of the first ball valve, and the second branch and the third branch are both provided with switch valves. The adjusting box is located in the second portion, one end of the adjusting box is fixedly attached to the partition plate and communicated with the second cavity, two coaxial flow holes are formed in the side wall of the adjusting box, and the flow holes face the diaphragm. The valve plug rod is located in the first cavity, fixedly connected with the diaphragm and arranged in the flow holes in a penetrating mode, a first annular gap is formed between the flow holes, two pistons are arranged on the valve plug rod and correspond to the flow holes respectively, and when the valve plug rod moves towards the first portion, the pistons expand and correspond to the gaps between the flow holes. An elastic component is located in the second portion, and the resilience force of the elastic component is used for pressing the membrane towards the first portion.

As another embodiment of this application, be equipped with in the second portion with the separation sleeve that adjusting vessel connects, the separation sleeve cover locate on the valve cock pole and with valve cock pole between have the second annular gap, the separation sleeve with the diaphragm sets up along the length direction interval of valve cock pole, elastic component includes first compression spring. The first compression spring is sleeved on the valve plug rod, and the diaphragm and the isolation sleeve are respectively extruded at two ends of the first compression spring.

As another embodiment of the present application, a sleeve portion is disposed on an inner wall of the second portion, the sleeve portion is located on a side of the valve plug rod away from the first portion, and the elastic component includes a second compression spring. The second compression spring is sleeved on the valve plug rod, one end of the second compression spring extrudes the piston on the same side, and the other end of the second compression spring penetrates into the sleeve part, so that the bottom of the sleeve part is extruded.

As another embodiment of the present application, one end of the valve plug stem is located within the first portion, and the adjustment system further includes a stop lever. The gag lever post is parallel with the valve cock pole, and one end is sealed penetrates just can follow in the first portion the length direction of valve cock pole removes, the valve cock pole orientation when first portion direction removes, the gag lever post is used for the displacement of spacing valve cock pole.

As another embodiment of this application, the inner wall of first portion is equipped with first annular groove, be equipped with the cover in the regulation container and establish the laminating in second annular groove on the diaphragm, the regulation container is equipped with the regulation hole, the regulation hole with first annular groove with second annular groove all communicates, governing system still includes sealing rod. One end of the sealing rod penetrates through the adjusting hole in a sealing mode and can move along the adjusting hole, and the sealing rod is moved to achieve opening and closing between the first annular groove and the second annular groove.

The utility model provides an governing system's beneficial effect lies in: compared with the prior art, the utility model discloses governing system owing to be equipped with foretell ball valve, so can avoid needing great moment of torsion could rotate the problem of case.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic front sectional view of a ball valve provided in embodiment 1 of the present invention;

fig. 2 is a schematic front sectional view of a ball valve provided in embodiment 2 of the present invention;

fig. 3 is a schematic axial structure diagram of an elastic ring in a ball valve provided in embodiments 1 and 2 of the present invention;

fig. 4 is a schematic partial sectional structural view of an adjusting system provided in an embodiment of the present invention;

fig. 5 is an enlarged schematic structural view of a portion a in fig. 4.

In the figure: 1. a valve body; 11. a water flow pipe; 2. a valve core; 3. a valve stem; 401. a first ejector shaft; 41. a second ejector shaft; 42. a thrust bearing; 43. a bearing sleeve; 5. a positioning tube; 51. a first stage; 52. a second stage; 6. a first seal ring; 7. an elastic ring; 71. an elastic portion; 8. adjusting the container; 81. a partition plate; 82. a first chamber; 821. a first part; 8211. a first annular groove; 822. a second section; 8221. a second annular groove; 83. a second chamber; 84. an isolation sleeve; 85. a sleeve portion; 91. a membrane; 92. an adjusting box; 921. a flow orifice; 93. a valve plug rod; 931. a piston; 941. a first compression spring; 942. a second compression spring; 110. a sealing rod; 120. a water supply line; 130. a three-way pipe; 131. a first branch; 132. a second branch; 133. a third branch; 140. an on-off valve; 150. a limiting rod.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to fig. 2, the ball valve of the present invention will now be described. The ball valve comprises a valve body 1, a valve core 2, a valve rod 3 and an ejector. One end of the ejector piece penetrates into the valve body 1 in a sealing mode, a first rotating groove is formed in the end face of the ejector piece and connected with the valve body 1, and the first rotating groove is matched and attached to one end, deviating from the valve rod 3, of the valve core 2.

The utility model provides a ball valve, compared with the prior art, the utility model discloses the ball valve, valve rod 3 up during this ball valve of installation in the pipeline, first rotatory recess is used for bearing case 2 to rotate, only needs very little extrusion force when case 2 is sealed. Therefore, the whole friction force is small when the valve core 2 rotates, and the problem that the valve core 2 can be rotated only by large torque is avoided.

As a specific embodiment of the ball valve provided in the present invention, please refer to fig. 1, the ejector includes a first ejector shaft 401. First top shaft 401 pushes away with the coaxial setting of the axis of rotation of case 2, and is located case 2 and keeps away from one side of valve rod 3, and one end is sealed to penetrate in the valve body 1 and the terminal surface is used for setting up first rotatory recess, is connected with valve body 1. The structure is simple and easy to process. In the present embodiment, the first ejector shaft 401 and the valve body 1 may be connected by a seal thread.

Referring to fig. 2, the pushing member includes a second pushing shaft 41, a thrust bearing 42 and a supporting sleeve 43. The second pushing shaft 41 is coaxially arranged with the rotation axis of the valve core 2, is located on one side of the valve core 2 far away from the valve rod 3, has one end penetrating into the valve body 1 in a sealing manner, and has a gap between the end surface and the valve core 2, and is connected with the valve body 1. The thrust bearing 42 is located in the valve body 1 and sleeved on the second push shaft 41. The bearing sleeve 43 is located in the valve body 1, rotatably sleeved on the second push shaft 41 and abutted against the end face of the thrust bearing 42 facing the valve element 2, and the end face of the bearing sleeve 43 facing the valve element 2 is used for arranging a first rotary groove. The rotation of the valve core 2 can drive the rolling bodies in the thrust bearing 42 to roll, thereby further reducing the torque required for driving the valve core 2 to rotate. In the present embodiment, the second ejector shaft 41 and the valve body 1 may be connected by a seal thread.

As a specific implementation manner of the ball valve provided in the present invention, please refer to fig. 2, the valve body 1 has two water pipes 11 coaxially disposed, the two water pipes 11 are respectively located at two sides of the valve core 2, and the ball valve further includes a positioning pipe 5, a first sealing ring 6 and an elastic ring 7. The number of the positioning pipes 5 is two, the two positioning pipes 5 are respectively positioned at two sides of the valve core 2 corresponding to the two water flowing pipes 11, the positioning pipes 5 comprise a first section 51 with a smaller outer diameter and a second section 52 with a larger outer diameter, one section of the first section 51 is hermetically and slidably arranged in the positioning pipes 5 at the same side, and a port of the second section 52 faces the valve core 2 and the end face of the second section is provided with an accommodating groove. First sealing washer 6 is two, and two first sealing washers 6 are located two holding tanks respectively, and two first sealing washers 6 are used for from both sides and case 2 laminating sealedly. The number of the elastic rings 7 is two, the two elastic rings 7 are respectively sleeved on the two first sections 51, and two ends of the elastic rings 7 respectively extrude the corresponding water flowing pipe 11 and the second sections 52. The rotation of the valve core 2 can realize the communication and the closing of the two positioning pipes 5, namely the communication and the closing between the two water flowing pipes 11, thereby realizing the function of a ball valve. In the use process of the ball valve, the first sealing ring 6 can be worn along with the rotation of the valve core 2, and the positioning pipe 5 can slide towards the direction of the valve core 2 due to the resilience force of the elastic ring 7, so that the first sealing ring 6 and the valve core 2 are always kept sealed.

As a specific implementation manner of the ball valve, please refer to fig. 2, in order to guarantee the sealing effect between the first sealing ring 6 and the valve core 2, the first sealing ring 6 is provided with the second rotary groove which is attached to the valve core 2 in a rotating manner towards the end surface of the valve core 2.

As a specific embodiment of the ball valve of the present invention, please refer to fig. 2 to 3, two ends of the elastic ring 7 are respectively provided with a plurality of elastic portions 71 outwardly forming an arch shape along the axial direction of the elastic ring 7, and the elastic portions 71 are used for extruding the water flowing pipe 11 or the second section 52. The elastic ring 7 has good elasticity and long service life.

The utility model also provides an governing system. Referring to fig. 4 to 5, the regulating system is provided with two ball valves as described above, and further comprises a regulating container 8, a membrane 91, a water supply pipeline 120, a three-way pipe 130, a regulating box 92, a valve plug rod 93 and an elastic component. A partition plate 81 is fixedly arranged in the adjusting container 8, the inner part of the adjusting container 8 is divided into a first chamber 82 and a second chamber 83 by the partition plate 81, and the second chamber 83 is communicated with the water outlet end of the first ball valve. The diaphragm 91 is fixedly disposed in the first chamber 82, and is used for dividing the first chamber 82 into a first portion 821 and a second portion 822, and the second portion 822 is communicated with a water inlet end of the second ball valve. One end of the water supply line 120 is used to communicate with a water supply device, and the other end communicates with the water inlet end of the first ball valve. The first branch 131 of the tee pipe 130 is communicated with the first part 821, the second branch 132 is communicated with the middle part of the water supply pipeline 120, the third branch 133 is communicated with the water inlet end of the first ball valve, and the second branch 132 and the third branch 133 are both provided with the switch valve 140. The regulating box 92 is located in the second portion 822, one end of the regulating box is fixedly attached to the partition plate 81 and is communicated with the second chamber 83, and two coaxial flow holes 921 are formed in the side wall of the regulating box, and the flow holes 921 face the diaphragm 91. The valve plug 93 is located in the first chamber 82, is fixedly connected to the diaphragm 91, is inserted into the two flow holes 921, and has a first annular gap with the flow holes 921, two pistons 931 are provided on the valve plug 93, the two pistons 931 correspond to the two flow holes 921, respectively, and when the valve plug 93 moves toward the first portion 821, the pistons 931 expand the gap with the corresponding flow holes 921. An elastic member is located in the second portion 822, the resilience of the elastic member being used to compress the membrane 91 in the direction of the first portion 821. Due to the ball valve, the problem that the valve core 2 can be rotated only by large torque can be avoided.

The use principle of the regulating system is as follows: when the pressure difference between the first portion 821 and the second portion 822 increases, the diaphragm 91 deforms in the direction of the second portion 822, the valve plug rod 93 moves in the direction away from the first portion 821, the piston 931 reduces the gap between the piston 931 and the corresponding flow rate hole 921, the flow rate at the flow rate hole 921 decreases, the pressure difference between the first portion 821 and the second portion 822 decreases, and finally the pressure balance between the first portion 821 and the second portion 822 and the flow rate at the flow rate hole 921 are achieved; when the pressure difference between the first portion 821 and the second portion 822 decreases, the diaphragm 91 is deformed in the direction of the first portion 821, the valve plug rod 93 moves in the direction of the first portion 821, the piston 931 expands the gap with the corresponding flow rate hole 921, the flow rate at the flow rate hole 921 increases, the pressure difference between the first portion 821 and the second portion 822 increases, and finally the pressure balance between the first portion 821 and the second portion 822 and the flow rate at the flow rate hole 921 are stabilized. When the on-off valve 140 on the second branch 132 is opened and the on-off valve 140 on the third branch 133 is closed, the pressure difference between the middle of the water supply line 120 and the second chamber 83 can be stabilized; when the on-off valve 140 on the third branch 133 is opened and the on-off valve 140 on the second branch 132 is closed, the flow rate of the liquid in the second portion 822 can be stabilized.

As a specific implementation manner of the adjusting system provided in the present invention, referring to fig. 5, in order to realize the function of the elastic component, the second portion 822 is provided with the isolation sleeve 84 connected to the adjusting container 8, the isolation sleeve 84 is sleeved on the valve plug rod 93 and has a second annular gap with the valve plug rod 93, the isolation sleeve 84 and the diaphragm 91 are arranged along the length direction of the valve plug rod 93 at an interval, and the elastic component includes a first compression spring 941. The first compression spring 941 is sleeved on the valve plug rod 93, and has two ends respectively pressing the diaphragm 91 and the isolation sleeve 84. The structure is simple and easy to process.

Referring to fig. 5, in order to realize the function of the elastic component, a sleeve portion 85 is disposed on the inner wall of the second portion 822, the sleeve portion 85 is located on a side of the valve plug 93 away from the first portion 821, and the elastic component includes a second compression spring 942. The second compression spring 942 is fitted over the valve plug rod 93, one end of which presses the piston 931 on the same side, and the other end of which penetrates into the sleeve portion 85, thereby pressing the bottom of the sleeve portion 85. The structure is simple and easy to process.

Referring to fig. 5, one end of the valve plug rod 93 is located in the first portion 821, and the adjusting system further includes a limiting rod 150. The limiting rod 150 is parallel to the valve plug rod 93, one end of the limiting rod 150 penetrates into the first portion 821 in a sealing mode and can move along the length direction of the valve plug rod 93, and when the valve plug rod 93 moves towards the first portion 821, the limiting rod 150 is used for limiting the moving distance of the valve plug rod 93, and then the maximum flow at the position of the flow control hole 921 is controlled. In this embodiment, the limiting rod 150 and the adjusting container 8 may be connected by a sealing thread, and the limiting rod 150 may move along the length direction of the valve plug rod 93 by rotating the limiting rod 150.

As a specific embodiment of the adjusting system provided by the utility model, refer to fig. 5, the inner wall of first portion 821 is equipped with first annular recess 8211, is equipped with the cover in the adjusting container 8 and establishes the second annular recess 8221 that laminates on diaphragm 91, and adjusting container 8 is equipped with the regulation hole, and the regulation hole all communicates with first annular recess 8211 and second annular recess 8221, and adjusting system still includes sealing rod 110. One end of the sealing rod 110 is sealed and penetrates through the adjusting hole and can move along the adjusting hole, and the sealing rod 110 is opened and closed through moving. When seal rod 110 is moved to a proper position, first annular groove 8211 and second annular groove 8221 are communicated, diaphragm 91 is deformed by the pressure of the liquid in first portion 821, and first portion 821 is communicated with second portion 822, so that the pressure difference between first portion 821 and second portion 822 can be finely adjusted. In this embodiment, the sealing rod 110 and the adjusting hole may be connected by a sealing thread, the membrane 91 may be provided with a folded edge, and the folded edge of the membrane 91 may be sleeved on the sealing rod 110.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The ball valve, including valve body, case and valve rod, its characterized in that still includes:

and one end of the ejection piece penetrates into the valve body in a sealing manner, a first rotating groove is arranged on the end face of the ejection piece and connected with the valve body, and the first rotating groove is matched and attached with one end of the valve core, which deviates from the valve rod.

2. The ball valve of claim 1, wherein the ejector comprises:

the first pushing shaft is coaxial with the rotating axis of the valve core and located on one side, away from the valve rod, of the valve core, one end of the first pushing shaft penetrates into the valve body in a sealing mode, the end face of the first pushing shaft is used for arranging the first rotating groove, and the first pushing shaft is connected with the valve body.

3. The ball valve of claim 1, wherein the ejector comprises:

the second ejector shaft is coaxially arranged with the rotating axis of the valve core, is positioned on one side of the valve core away from the valve rod, and has one end penetrating into the valve body in a sealing manner and connected with the valve body;

the thrust bearing is positioned in the valve body and sleeved on the second ejection shaft;

the bearing sleeve is positioned in the valve body, is rotatably sleeved on the second push shaft and is abutted to the end face, facing the valve core, of the thrust bearing, and the end face, facing the valve core, of the bearing sleeve is used for arranging a first rotating groove.

4. The ball valve of claim 1, wherein the valve body has two flow pipes coaxially disposed, the two flow pipes being respectively located at both sides of the valve element, the ball valve further comprising:

the positioning pipes are respectively positioned on two sides of the valve core corresponding to the two water flowing pipes, each positioning pipe comprises a first section with a smaller outer diameter and a second section with a larger outer diameter, one section of the first section is hermetically and slidably arranged in the positioning pipes on the same side, and a port of the second section faces the valve core and an accommodating groove is formed in the end face of the second section;

the two first sealing rings are respectively positioned in the two accommodating grooves and are used for being attached and sealed with the valve core from two sides;

the two elastic rings are respectively sleeved on the two first sections, and two ends of each elastic ring respectively extrude the corresponding water flowing pipe and the corresponding second section.

5. The ball valve according to claim 4, wherein a plurality of resilient portions are provided at both ends of the resilient ring, each resilient portion being outwardly arched in the axial direction of the resilient ring, and the resilient portions being adapted to press the flow pipe or the second section.

6. Regulating system, characterized in that two ball valves according to any of claims 1-5 are provided, said regulating system further comprising:

the inner part of the adjusting container is fixedly provided with a partition plate, the inner part of the adjusting container is divided into a first cavity and a second cavity by the partition plate, and the second cavity is communicated with the water outlet end of the first ball valve;

the diaphragm is fixedly arranged in the first cavity and used for dividing the first cavity into a first part and a second part, and the second part is communicated with the water inlet end of a second ball valve;

one end of the water supply pipeline is communicated with a water supply device, and the other end of the water supply pipeline is communicated with the water inlet end of the first ball valve;

the first branch is communicated with the first part, the second branch is communicated with the middle part of the water supply pipeline, the third branch is communicated with the water inlet end of the first ball valve, and the second branch and the third branch are both provided with switch valves;

the adjusting box is positioned in the second part, one end of the adjusting box is fixedly attached to the partition plate and is communicated with the second cavity, two coaxial flow holes are formed in the side wall of the adjusting box, and the flow holes face the diaphragm;

the valve plug rod is positioned in the first cavity, fixedly connected with the diaphragm, arranged in the two flow holes in a penetrating manner, and provided with a first annular gap with the flow holes, two pistons are arranged on the valve plug rod and respectively correspond to the two flow holes, and when the valve plug rod moves towards the first part direction, the pistons expand the gap between the piston and the corresponding flow holes;

and the elastic component is positioned in the second part, and the resilience force of the elastic component is used for extruding the membrane towards the direction of the first part.

7. The modulation system according to claim 6, wherein a spacer sleeve is disposed in the second portion and connected to the modulation vessel, the spacer sleeve is disposed on the valve plug stem with a second annular gap therebetween, the spacer sleeve and the diaphragm are spaced apart along the length of the valve plug stem, and the elastic assembly comprises:

and the first compression spring is sleeved on the valve plug rod, and two ends of the first compression spring respectively extrude the diaphragm and the isolating sleeve.

8. An adjustment system according to claim 6, characterized in that the second portion is provided on an inner wall thereof with a sleeve portion located on a side of the valve plug stem remote from the first portion, the resilient assembly comprising:

and the second compression spring is sleeved on the valve plug rod, one end of the second compression spring extrudes the piston at the same side, and the other end of the second compression spring penetrates into the sleeve part, so that the bottom of the sleeve part is extruded.

9. The modulation system of claim 6, wherein one end of the valve plug stem is located within the first portion, the modulation system further comprising:

the gag lever post is parallel with the valve cock pole, and one end is sealed penetrates just can follow in the first portion the length direction of valve cock pole removes, the valve cock pole orientation when first portion direction removes, the gag lever post is used for the displacement of spacing valve cock pole.

10. The adjustment system of claim 8, wherein the inner wall of the first portion defines a first annular groove, the adjustment container defines a second annular groove that fits over the diaphragm, the adjustment container defines an adjustment aperture that communicates with both the first annular groove and the second annular groove, and the adjustment system further comprises:

one end of the sealing rod penetrates through the adjusting hole in a sealing mode and can move along the adjusting hole, and the sealing rod is moved to achieve opening and closing between the first annular groove and the second annular groove.

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