CN109282056B - Variable cross-section plunger type valve - Google Patents
Variable cross-section plunger type valve Download PDFInfo
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- CN109282056B CN109282056B CN201811349384.2A CN201811349384A CN109282056B CN 109282056 B CN109282056 B CN 109282056B CN 201811349384 A CN201811349384 A CN 201811349384A CN 109282056 B CN109282056 B CN 109282056B
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- cavity
- air outlet
- air inlet
- air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention relates to a variable cross-section plunger type valve, which comprises a valve rod, a valve seat and a shell, wherein the valve seat is provided with an air inlet cavity, an air outlet cavity and a transition channel for communicating the air inlet cavity and the air outlet cavity, the shell is provided with an air outlet cavity, the air inlet cavity and the air outlet cavity are communicated through a connecting channel, the valve rod is internally provided with a cavity, the outer wall of the valve rod is sequentially provided with a first air outlet communicated with the cavity, the air inlet structure comprises a first air inlet, a second air inlet and a second air outlet, wherein a blocking block for separating the first air inlet from the second air inlet is arranged in a cavity, the first air outlet and the second air inlet are both in a conical shape, the first air inlet and the second air outlet are respectively and always located in an air inlet cavity and an air outlet cavity, a reset spring supports a valve rod to enable the first air outlet and the second air inlet to be respectively and tightly attached to a connecting channel and a transition channel and cannot be ventilated, and when the valve rod is pushed, the narrow ends of the first air outlet and the second air inlet respectively and gradually enter the air outlet cavity and the air inlet cavity. The invention realizes large-range and high-precision flow control and has simple and reliable structure.
Description
Technical Field
The invention relates to an oxygen regulating valve, in particular to a variable-cross-section plunger type valve.
Background
At present, the oxygen regulating valve comprises a flat valve, a cone valve and a ball valve, but the valves all have a congenital defect that when the large flow regulation is met, the structural size of the valves is designed to be large, the small flow regulation precision cannot be controlled at the moment, and when the small flow regulation is met, the large flow regulation requirement cannot be met.
Disclosure of Invention
The invention aims to provide a variable-section plunger type valve, which adopts a variable-section plunger type valve structure, realizes large-range and high-precision flow control and has a simple and reliable structure.
The technical scheme adopted by the invention is as follows:
a variable cross-section plunger type valve comprises a valve rod, a reset spring, a valve seat and a shell, wherein the valve seat and the shell are in sealing connection, the valve seat is provided with an air inlet cavity, an air outlet cavity and a transition channel for communicating the air inlet cavity and the air outlet cavity, the shell is provided with an air outlet cavity, the air inlet cavity and the air outlet cavity are communicated through the connection channel, the valve rod penetrates through the connection channel and the transition channel, two ends of the valve rod respectively penetrate through the air outlet cavity and the air outlet cavity in a sealing manner, the valve rod is internally provided with a cavity, the outer wall of the valve rod is sequentially provided with a first air outlet, a first air inlet, a second air inlet and a second air outlet which are communicated with the cavity, a blocking block for blocking the first air inlet and the second air inlet is arranged in the cavity, the first air outlet and the second air outlet are respectively and always positioned in the air inlet cavity and the air outlet cavity, the reset spring supports the valve rod to enable the first, when the valve rod is pushed, the return spring is compressed, and the narrow ends of the first air outlet and the second air inlet gradually enter the exhaust cavity and the air inlet cavity respectively.
Further, the valve rod is including the anterior segment that connects gradually, middle section and back end, the cavity, first gas outlet, first air inlet, second air inlet and second gas outlet are located the middle section, the sealed exhaust chamber of wearing out of anterior segment one end, the other end is for being wider in interface channel's wide terminal surface, thereby the one end that the middle section is connected with the back end is opened there is the blind hole vacuole formation, thereby the sprue is packed into behind the blind hole middle section and is connected with the back end, be equipped with between first inlet port and the second inlet port in the middle section and be wider in transition channel's flange, the sealed air cavity of wearing out of back end, during initial state, reset spring is spacing through interface channel and transition channel respectively with wide terminal surface and flange.
Furthermore, the wide end face and the working face of the flange are respectively provided with a sealing gasket, and in an initial state, the openings of the connecting channel and the transition channel are respectively compressed by the sealing gaskets on the wide end face and the flange.
Furthermore, be fixed with the anterior segment axle sleeve on the exhaust chamber wall, thereby the exhaust chamber is stretched out in anterior segment axle sleeve is passed to anterior segment one end complex, and reset spring overlaps at the anterior segment axle sleeve other end and presses the wide terminal surface reverse side all the time.
Furthermore, the gaskets are sleeved on the inner side and the outer side of the exhaust cavity on the front section shaft sleeve, the outer side of the exhaust cavity on the front section shaft sleeve is matched with a fixing nut, and the gaskets on the front section shaft sleeve are tightly pressed on the inner side and the outer side of the exhaust cavity after the fixing nut is screwed down.
Further, the transition passage is the hole of middle section axle sleeve, the hole complex cover of middle section axle sleeve is on the middle section, the outer wall cooperation is in the mounting hole of valve seat, be equipped with the sealing washer between middle section axle sleeve outer wall and mounting hole, the both sides of middle section axle sleeve are equipped with adjusting spring and adjusting nut respectively in the mounting hole, adjusting spring compresses tightly the one side that the middle section axle sleeve is located the chamber of admitting air, adjusting nut and mounting hole cooperation just compress tightly the one side that the middle section axle sleeve is located the chamber of giving vent to anger.
Furthermore, the wall part of the air outlet cavity is an end cover, the rear section of the air outlet cavity penetrates through the end cover after penetrating through the inner hole of the diaphragm in a matching manner, and the edge of the diaphragm is tightly pressed and fixed on the valve seat by the end cover.
Furthermore, first air inlet and second gas outlet are the round hole and along the axial equipartition.
The invention has the beneficial effects that:
the plunger type valve structure with the variable cross section is adopted, large-range and high-precision flow control is realized, the structure is simple and reliable, during work, air source gas enters the air inlet cavity and enters the cavity from the first air inlet, during an initial state, the air cannot enter the air outlet cavity and the air outlet cavity because the first air outlet and the second air inlet cannot ventilate, when air supply is needed, the valve rod is pushed, the reset spring is compressed, meanwhile, the narrow ends of the first air outlet and the second air inlet respectively and gradually enter the air outlet cavity and the air inlet cavity, part of the air enters the air outlet cavity from the first air inlet through the first air outlet, and the other part of the air enters the air outlet cavity from the second air inlet through the second air outlet; the first air outlet and the second air inlet are conical and narrow ends are put into operation firstly, so that the change of the sectional area of the valve is small at the beginning, the flow is small, the adjustment is easy, the change of the sectional area of the valve is large along with the continuous movement of the valve rod, the flow is large, the change of the sectional area of the valve is designed according to the total flow, and the flow adjustment precision is ensured.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention.
In the figure: 1-a shell; 2-fixing the nut; 3-a gasket; 4-a return spring; 5-a sealing gasket; 6-sealing ring; 7-a valve seat; 8-adjusting the spring; 9-adjusting the nut; 10-a membrane; 11-end cap; 12-rear section; 13-middle section shaft sleeve; 14-a block; 15-middle section; 16-front section shaft sleeve; 17-the preceding paragraph; a-an air inlet cavity; b-an air outlet cavity; c-an exhaust chamber; d-wide end face; e-a flange; f-a cavity; g-a first outlet; h-a first gas inlet; i-a second air inlet; j-the second outlet.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in figure 1, the variable cross-section plunger type valve comprises a valve rod, a reset spring 4, a valve seat 7 and a shell 1 which are connected in a sealing manner, wherein the valve seat 7 is provided with an air inlet cavity a, an air outlet cavity b and a transition channel for communicating the air inlet cavity a and the air outlet cavity b, the transition channel is used for communicating the air inlet cavity a and the air outlet cavity b, the shell 1 is provided with an air outlet cavity c, the air inlet cavity a is communicated with the air outlet cavity c through the connection channel, the valve rod penetrates through the connection channel and the transition channel, two ends of the valve rod respectively penetrate through the air outlet cavity b and the air outlet cavity c in a sealing manner, a cavity f is arranged inside the valve rod, a first air outlet g, a second air inlet i and a second air outlet j which are communicated with the cavity f are sequentially arranged on the outer wall of the valve rod, a blocking block 14 for blocking the first air inlet h and the second air inlet i is arranged inside the cavity f, the first air, during the initial state, reset spring 4 supports and supports the valve pole and makes first gas outlet g and second air inlet i hug closely respectively and can not ventilate in connecting channel and transition passageway, and when promoting the valve pole, reset spring 4 is compressed and the narrow end of first gas outlet g and second air inlet i gets into exhaust chamber c and air inlet chamber b respectively gradually. The plunger type valve structure with the variable cross section is adopted, large-range and high-precision flow control is realized, the structure is simple and reliable, when the plunger type valve structure works, air source gas enters the air inlet cavity a and enters the cavity f from the first air inlet h, and in an initial state, because the first air outlet g and the second air inlet i cannot be communicated with air, the gas cannot enter the air outlet cavity c and the air outlet cavity b; the first air outlet g and the second air inlet i are conical, narrow ends of the first air outlet g and the second air inlet i are put into work, so that the change of the sectional area of the valve is small at the beginning, the flow is small, the adjustment is easy, the change of the sectional area of the valve is large along with the continuous movement of the valve rod, the flow is large, the change of the sectional area of the valve is designed according to the total flow, and the flow adjustment precision is ensured.
As shown in fig. 1, in this embodiment, the valve rod includes a front section 17, a middle section 15 and a rear section 12 connected in sequence, a cavity f, a first air outlet g, a first air inlet h, a second air inlet i and a second air outlet j are located in the middle section 15, one end of the front section 17 penetrates through an exhaust cavity c in a sealed manner, the other end is a wide end face d wider than a connecting channel, one end of the middle section 15 connected with the rear section 12 is provided with a blind hole to form the cavity f, a block 14 is installed in the blind hole and then the middle section 15 is connected with the rear section 12, a flange e wider than a transition channel is arranged between the first air inlet h and the second air inlet i on the middle section 15, the rear section 12 penetrates through an exhaust cavity b in a sealed manner, and in an initial state, the reset spring 4 limits the wide end face d. The valve rod is divided into three sections, firstly, the shaft diameter of the valve rod is changeable, the valve rod is arranged into three sections, the three sections are convenient to manufacture and install in different holes, secondly, the installation of the blocking block 14 and the machining of the cavity f are convenient, thirdly, the structure of the wide end face d and the flange e can be additionally arranged, the positioning of the first air outlet g and the second air inlet i is convenient, and therefore the relative position of the first air outlet g and the connecting channel and the relative position of the second air inlet i and the transition channel are guaranteed.
As shown in fig. 1, in this embodiment, the working surfaces of the wide end surface d and the flange e are both provided with the sealing gaskets 5, and in an initial state, the openings of the connecting channel and the transition channel are respectively pressed by the sealing gaskets 5 on the wide end surface d and the flange e, and the sealing gaskets 5 achieve a further sealing effect.
As shown in fig. 1, in this embodiment, a front section shaft sleeve 16 is fixed on the wall of the exhaust cavity c, one end of the front section 17 passes through the front section shaft sleeve 16 in a matching manner so as to extend out of the exhaust cavity c, and the return spring 4 is sleeved on the other end of the front section shaft sleeve 16 and is pressed on the reverse side of the wide end face d all the time.
As shown in fig. 1, in this embodiment, the gaskets 3 are respectively sleeved on the inner side and the outer side of the air exhaust cavity c on the front-section shaft sleeve 16, the fixing nut 2 is matched with the outer side of the air exhaust cavity c on the front-section shaft sleeve 16, the gaskets 3 on the front-section shaft sleeve 16 are tightly pressed on the inner side and the outer side of the air exhaust cavity c after the fixing nut 2 is tightened, and the gaskets 3 play a role in sealing between the front-section shaft sleeve 16 and the housing 1.
As shown in fig. 1, in this embodiment, the transition passage is an inner hole of the middle shaft sleeve 13, the inner hole of the middle shaft sleeve 13 is fitted on the middle section 15, the outer wall is fitted in the mounting hole of the valve seat 7, a seal ring 6 is arranged between the outer wall of the middle shaft sleeve 13 and the mounting hole, two sides of the middle shaft sleeve 13 in the mounting hole are respectively provided with an adjusting spring 8 and an adjusting nut 9, the adjusting spring 8 compresses one side of the middle shaft sleeve 13 located in the air inlet cavity a, and the adjusting nut 9 is fitted with the mounting hole and compresses one side of the middle shaft sleeve 13 located in the air outlet cavity b. The position of the middle shaft sleeve 13 can be adjusted by screwing or unscrewing the adjusting nut 9, so that the relative position of the second air inlet i and the transition channel is adjusted, the installation is convenient, the flange e and the transition channel are matched in place by matching and positioning the wide end face d and the connecting channel during installation and then adjusting the position of the transition channel.
As shown in fig. 1, in this embodiment, the wall portion of the air outlet cavity b is an end cover 11, the rear section 12 is fitted through the inner hole of the diaphragm 10 and then passes through the air outlet cavity b from the end cover 11, the end cover 11 presses and fixes the edge of the diaphragm 10 on the valve seat 7, and the diaphragm 10 plays a role of sealing and can provide a certain restoring force.
As shown in fig. 1, in this embodiment, the first air inlet h and the second air outlet j are both circular holes and are uniformly distributed along the axial direction, so that air can be rapidly and uniformly supplied and discharged.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (8)
1. The utility model provides a variable cross section plunger formula valve which characterized in that: the valve comprises a valve rod, a reset spring, a valve seat and a shell, wherein the valve seat and the shell are in sealed connection, the valve seat is provided with an air inlet cavity, an air outlet cavity and a transition channel for communicating the air inlet cavity and the air outlet cavity, the shell is provided with an air outlet cavity, the air inlet cavity and the air outlet cavity are communicated through the connection channel, the valve rod penetrates through the connection channel and the transition channel, two ends of the valve rod respectively penetrate through the air outlet cavity and the air outlet cavity in a sealed manner, the valve rod is internally provided with a cavity, the outer wall of the valve rod is sequentially provided with a first air outlet, a first air inlet, a second air inlet and a second air outlet which are communicated with the cavity, a blocking block for blocking the first air inlet and the second air inlet is arranged in the cavity, the first air outlet and the second air outlet are respectively and always positioned in the air inlet cavity and the air outlet cavity, the reset spring supports against the valve rod to, when the valve rod is pushed, the return spring is compressed, and the narrow ends of the first air outlet and the second air inlet gradually enter the exhaust cavity and the air inlet cavity respectively.
2. A variable cross-section plunger-type shutter as claimed in claim 1, characterized in that: the valve rod is including the anterior segment that connects gradually, middle section and back end, the cavity, first gas outlet, first air inlet, second air inlet and second gas outlet are located the middle section, the sealed exhaust chamber of wearing out of anterior segment one end, the other end is for being wider in interface channel's wide terminal surface, thereby the middle section is opened with the one end that the back end is connected has the blind hole vacuole formation, the sprue is packed into behind the blind hole middle section and is connected with the back end, be equipped with between first inlet port and the second inlet port in the middle section and be wider in transition channel's flange, the sealed air cavity of wearing out of back end, during initial state, reset spring is spacing through interface channel and transition channel respectively with wide terminal surface and flange.
3. A variable cross-section plunger-type shutter as claimed in claim 2, characterized in that: the wide end face and the working face of the flange are respectively provided with a sealing gasket, and in an initial state, the sealing gaskets on the wide end face and the flange respectively compress the openings of the connecting channel and the transition channel.
4. A variable cross-section plunger-type shutter as claimed in claim 2, characterized in that: be fixed with the anterior segment axle sleeve on the exhaust chamber wall, thereby the exhaust chamber is stretched out in anterior segment axle sleeve is passed to anterior segment one end complex, and reset spring overlaps at the anterior segment axle sleeve other end and presses the wide terminal surface reverse side all the time.
5. A variable cross-section plunger shutter as claimed in claim 3, characterized in that: the gasket is sleeved on the inner side and the outer side of the air exhaust cavity on the front section shaft sleeve, the fixing nut is matched with the outer side of the air exhaust cavity on the front section shaft sleeve, and the gasket on the front section shaft sleeve is tightly pressed on the inner side and the outer side of the air exhaust cavity after the fixing nut is screwed down.
6. A variable cross-section plunger-type shutter as claimed in claim 2, characterized in that: transition passageway is the hole of middle section axle sleeve, and the hole complex cover of middle section axle sleeve is on the middle section, the outer wall cooperation is in the mounting hole of valve seat, is equipped with the sealing washer between middle section axle sleeve outer wall and mounting hole, and the both sides of middle section axle sleeve are equipped with adjusting spring and adjusting nut respectively in the mounting hole, and adjusting spring compresses tightly the one side that the middle section axle sleeve is located the chamber of admitting air, and adjusting nut compresses tightly the one side that the middle section axle sleeve is located the chamber of giving vent to anger with the mounting hole cooperation and with the.
7. A variable cross-section plunger-type shutter as claimed in claim 2, characterized in that: the wall part of the air outlet cavity is an end cover, the rear section of the air outlet cavity penetrates through the inner hole of the diaphragm in a matched mode and then penetrates out of the air outlet cavity from the end cover, and the edge of the diaphragm is tightly pressed and fixed on the valve seat through the end cover.
8. A variable cross-section plunger-type shutter as claimed in claim 1, characterized in that: the first air inlet and the second air outlet are round holes and are uniformly distributed along the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811349384.2A CN109282056B (en) | 2018-11-13 | 2018-11-13 | Variable cross-section plunger type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811349384.2A CN109282056B (en) | 2018-11-13 | 2018-11-13 | Variable cross-section plunger type valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109282056A CN109282056A (en) | 2019-01-29 |
| CN109282056B true CN109282056B (en) | 2020-05-05 |
Family
ID=65176238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811349384.2A Active CN109282056B (en) | 2018-11-13 | 2018-11-13 | Variable cross-section plunger type valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN109282056B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2355225A1 (en) * | 1976-06-16 | 1978-01-13 | Renault | FLOW REGULATION VALVE FOR VISCOUS FLUIDS |
| CN101757713A (en) * | 2008-12-11 | 2010-06-30 | 北京谊安医疗系统股份有限公司 | Oxygen-air hybrid mechanism and breathing machine with the mechanism |
| US9163735B2 (en) * | 2009-07-30 | 2015-10-20 | Peter Ronald McCallum | Flow diverter |
| CN106195297B (en) * | 2016-08-30 | 2019-01-22 | 航宇救生装备有限公司 | Multi-functional lung formula valve |
| CN107061821B (en) * | 2017-04-25 | 2023-07-21 | 四川省犍为峨山阀门有限责任公司 | Regulator director |
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2018
- 2018-11-13 CN CN201811349384.2A patent/CN109282056B/en active Active
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| CN109282056A (en) | 2019-01-29 |
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