CN202699821U - Sequence valve capable of pneumatically controlling conversion of path - Google Patents
Sequence valve capable of pneumatically controlling conversion of path Download PDFInfo
- Publication number
- CN202699821U CN202699821U CN 201220400921 CN201220400921U CN202699821U CN 202699821 U CN202699821 U CN 202699821U CN 201220400921 CN201220400921 CN 201220400921 CN 201220400921 U CN201220400921 U CN 201220400921U CN 202699821 U CN202699821 U CN 202699821U
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- passage
- spool
- valve
- valve body
- cavity
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Abstract
The utility model relates to a sequence valve capable of pneumatically controlling conversion of a path. The sequence valve comprises a valve body, a valve cover, a valve core and an elastic element, wherein high-pressure control gas pushes the back end part of the valve core when the high-pressure control gas enters, so that the valve core overcomes the elasticity of the elastic element to slide on site forwards, a seal pad at the front end part of the valve core presses against a third vent hole to realize airtight match, another seal pad at the middle part of the valve body and a separation part are at a separating ventilation state, and a first vent hole and a second vent hole are communicated through a cavity body; and when no high-pressure control gas enters, the valve core slides on site backwards under the action of the elasticity of the elastic element, the other seal pad at the middle part of the valve body presses against the separation part to realize the airtight match, the seal pad at the front end part of the valve core and the third vent hole are at the separating ventilation state, and the second vent hole and the third vent hole are communicated. The sequence valve disclosed by the utility model has the characteristic of reliability of automatic conversion of the path through the control gas.
Description
Technical field
This novel air-valve device that relates to the pneumatic switched path of the breathing apparatus in the armarium refers in particular to a kind of sequence valve of pneumatic control switched path.
Background technology
At present, in the breathing apparatus of medical field, the breathing apparatus supply oxygen is to patient respiration or carry out first aid, sometimes, oxygen and air need to be realized that automatic switching function is arranged in the breathing apparatus to reach the requirement for patient respiration, this just needs a kind of sequence valve that switches the gas passage by pneumatic control to come the gas circuit of oxygen and the gas circuit of air are automaticallyed switch.In view of this, how to provide a kind of simple in structure, easy to assembly, can become problems to be solved by now automatically switch the reliably sequence valve of gas circuit of control QI excess.
Summary of the invention
This novel purpose is exactly the sequence valve of provide for the deficiencies in the prior art part a kind of simple in structure, easy to assembly, pneumatic control switched path.
For achieving the above object, the sequence valve of a kind of pneumatic control switched path that this is novel includes:
One valve body, this valve body front end face is opening, has the cavity that is communicated with this opening in the valve body, and the rear end face of valve body has the through hole of external high voltage control gas, and described through hole communicates with the rear portion of cavity; At spaced apart the second passage that the first passage of external the first gas circuit is arranged and be used for external the second gas circuit of the side axial of valve body, the first passage and the second passage are communicated with the fractal at interval part of the valve body between the first passage and the second passage with described cavity middle part respectively;
One valve gap is sealedly connected on by the valve bonnet seal circle on the opening of valve body, has the 3rd passage of external the 3rd gas circuit on the valve gap, and the 3rd passage is communicated with described cavity is anterior;
One spool, the rearward end of this spool is slidingly connected to keep cavity rear portion and the stuffiness of cavity remainder by the chamber wall air-tightness at sealing ring and cavity rear portion, and the leading section of spool is provided with the sealing gasket corresponding with the 3rd passage; The middle part of valve body is provided with another sealing gasket corresponding with described compartment;
One flexible member, an end of this flexible member fixedly is pressed on the cavity forward position, is pressed on after the other end precompressed of flexible member to make spool have backward tendency toward sliding on the spool;
Wherein, under the state that has high voltage control gas to enter, the rearward end of high voltage control gas pushing spool makes spool overcome flexible member elastic force and slides forward and put in place, so that being pressed on the 3rd passage, the sealing gasket on the leading section of spool realizes air-tight fit, another sealing gasket at the middle part of valve body is in described compartment and separates aeration status, and the first passage is communicated with by cavity with the second passage;
Under the state that enters without high voltage control gas, spool slides backward under the elastic force effect of flexible member and puts in place, another sealing gasket at the middle part of valve body is pressed on the described compartment realizes air-tight fit, sealing gasket on the leading section of spool is in the 3rd passage and separates aeration status, and the second passage is communicated with the 3rd passage.
The inner face of described valve gap is stretched the protruding annular solid that has, the lateral wall of the leading section of spool and annular solid medial wall are slidingly matched to guarantee the axiality of spool slip, leading section at spool has several ventilative through holes, sealing gasket on the leading section of spool and the 3rd passage are in released state, and this ventilative through hole makes being communicated with of the second passage and the 3rd passage.
Also be provided with rubber ring between the sidewall of the leading section of described spool and the annular solid inwall and improve the smoothness that spool slides to eliminate the gap.
Described spool is made of the leading section of spool, the middle part of valve body, the rearward end of spool and connection three's connecting rod.
The rear end at the middle part of described valve body is set with described another sealing gasket.
Described flexible member is spring, and this spring housing is located at described annular solid outer surface, and an end of spring is pressed on the valve gap, and the other end of spring is pressed on the middle part of spool.
Be connected with control gas joint on the through hole of described external high voltage control gas.
Be connected with the 3rd gas path joint on the 3rd passage on the described valve gap.
Described the first passage is air intake, and described the second passage is the gas outlet, and described the 3rd passage is oxygen intake.
After adopting said structure, this novel high-pressure control gas makes spool overcome spring force and front slide, thereby the first passage on the valve body is communicated with the second passage, and the 3rd passage on the valve gap is sealed by the sealing gasket on the leading section of spool; Behind the cutoff high control gas, spool is mobile backward under the elastically-deformable recovery elastic force effect of spring, thereby second passage of ground on the valve body is communicated with the 3rd passage on the valve gap, and the first passage on the valve body is sealed by supermedial another sealing gasket of spool.So just can be by the automatic switchover of the existing gas circuit of high voltage control QI excess.Therefore, this novel have simple in structure, parts are few, easy to assembly, spool slides steadily and axiality is good, by the reliable characteristics of control gas automatic switchover gas circuit.
Description of drawings
Fig. 1 is this novel solid decomposition texture sketch map.
Fig. 2 is this novel solid structural representation.
Fig. 3 is the cross-sectional view under this novel state entering without high voltage control gas.
Fig. 4 is the cross-sectional view under this novel state there being high voltage control gas to enter.
The specific embodiment
Show that such as Fig. 1-4 sequence valve of a kind of pneumatic control switched path that this is novel includes:
One valve body 10, these valve body 10 front end faces are opening 11, have the cavity 12 that is communicated with this opening 11 in the valve body 10, and the rear end face of valve body 10 has the through hole 13 of external high voltage control gas, and described through hole 13 communicates with the rear portion 12a of cavity 12; At spaced apart the second passage 15 that the first passage 14 of external the first gas circuit is arranged and be used for external the second gas circuit of the side axial of valve body 10, the first passage 14 and the second passage 15 are communicated with described cavity 12 middle parts respectively, the fractal at interval part 16 of valve body between the first passage 14 and the second passage 15;
One valve gap 20 adopts several screws 21 to be sealedly connected on by valve bonnet seal circle 22 on the opening 11 of valve body 10, and the 3rd passage 23, the three passages 23 that have external the 3rd gas circuit on the valve gap 20 are communicated with the anterior 12c of described cavity;
One spool 30, the rearward end 31 of this spool 30 is slidingly connected to keep cavity rear portion 12a and cavity 12 remainders to seal stuffiness by the chamber wall air-tightness of sealing ring 90 and the rear portion 12a of cavity, and the leading section 32 of spool 30 is provided with the sealing gasket 40 corresponding with the 3rd passage 23; The middle part 33 of valve body is provided with another sealing gasket 50 corresponding with described compartment;
One flexible member 60, an end of this flexible member 60 fixedly is pressed on the cavity forward position, is pressed on after the other end precompressed of flexible member 60 to make spool 30 have backward tendency toward sliding on the spool 30.
The inner face of described valve gap 20 is stretched the protruding annular solid 24 that has, the lateral wall of the leading section 32 of spool 30 and annular solid 24 medial walls are slidingly matched to guarantee the axiality of spool 30 slips, leading section 32 at spool has several ventilative through hole 32a, when sealing gasket 40 and the 3rd passage 23 of the leading section 32 of spool is in released state, this ventilative through hole 32a makes being communicated with of the second passage 15 and the 3rd passage 23.
Also be provided with rubber ring 32b between the sidewall of the leading section 32 of described spool and annular solid 24 inwalls and improve the smoothness that spool 30 slides to eliminate the gap.
Described spool 30 is made of the leading section 32 of spool, the middle part 33 of valve body, the rearward end 31 of spool and connection three's connecting rod 34.
The rear end at the middle part 33 of described valve body 30 is set with described another sealing gasket 50.
Described flexible member 60 is spring, and this spring housing is located at described annular solid 24 outer surfaces, and an end of spring is pressed on the valve gap 23, and the other end of spring is pressed on the middle part 33 of spool.
Be connected with control gas joint 70 on the through hole 13 of described external high voltage control gas.
Be connected with the 3rd gas path joint 80 on the 3rd passage 23 on the described valve gap 20.
The 3rd passage 23 is vertical with the first passage 14, the second passage 15 respectively.
During use, there is being high voltage control gas to enter under the state of the through hole 13 on the valve rear end face, the rearward end 31 of high voltage control gas pushing spool 30 makes spool 30 overcome flexible member 60 elastic force and slides forward and put in place, so that being pressed on the 3rd passage 23, the sealing gasket 40 on the leading section 32 of spool realizes air-tight fit, another sealing gasket 50 at the middle part 33 of spool is in described compartment 16 and separates aeration status, and the first passage 14 is communicated with by cavity 12 with the second passage 15;
Entering without high voltage control gas under the state of the through hole 13 on valve body 10 rear end faces, spool 30 slides backward under the elastic force effect of flexible member 60 and puts in place, another sealing gasket 50 at the middle part 33 of spool is pressed on the described compartment 16 realizes air-tight fit, sealing gasket 40 on the leading section 32 of spool is in the 3rd passage 23 and separates aeration status, and the second passage 15 communicates by the ventilative through hole 32a of the circle of one on the spool leading section 32 with the 3rd passage 23; Described the first passage 14 is air intake, and described the second passage 15 is the gas outlet, and described the 3rd passage 23 is oxygen intake.So just can be by the automatic switchover of the existing gas circuit of high voltage control QI excess.Therefore, this novel have simple in structure, parts are few, easy to assembly, spool slides steadily and axiality is good, by the reliable characteristics of control gas automatic switchover gas circuit.
The above only is preferred embodiment of the present utility model, and all equalizations of doing according to this utility model claim scope change and modify, and all should belong to the covering scope of this utility model claim.
Claims (9)
1. the sequence valve of a pneumatic control switched path is characterized in that: include:
One valve body, this valve body front end face is opening, has the cavity that is communicated with this opening in the valve body, and the rear end face of valve body has the through hole of external high voltage control gas, and described through hole communicates with the rear portion of cavity; At spaced apart the second passage that the first passage of external the first gas circuit is arranged and be used for external the second gas circuit of the side axial of valve body, the first passage and the second passage are communicated with the fractal at interval part of the valve body between the first passage and the second passage with described cavity middle part respectively;
One valve gap is sealedly connected on by the valve bonnet seal circle on the opening of valve body, has the 3rd passage of external the 3rd gas circuit on the valve gap, and the 3rd passage is communicated with described cavity is anterior;
One spool, the rearward end of this spool is slidingly connected to keep cavity rear portion and the stuffiness of cavity remainder by the chamber wall air-tightness at sealing ring and cavity rear portion, and the leading section of spool is provided with the sealing gasket corresponding with the 3rd passage; The middle part of valve body is provided with another sealing gasket corresponding with described compartment;
One flexible member, an end of this flexible member fixedly is pressed on the cavity forward position, is pressed on after the other end precompressed of flexible member to make spool have backward tendency toward sliding on the spool;
Wherein, under the state that has high voltage control gas to enter, the rearward end of high voltage control gas pushing spool makes spool overcome flexible member elastic force and slides forward and put in place, so that being pressed on the 3rd passage, the sealing gasket on the leading section of spool realizes air-tight fit, another sealing gasket at the middle part of valve body is in described compartment and separates aeration status, and the first passage is communicated with by cavity with the second passage;
Under the state that enters without high voltage control gas, spool slides backward under the elastic force effect of flexible member and puts in place, another sealing gasket at the middle part of valve body is pressed on the described compartment realizes air-tight fit, sealing gasket on the leading section of spool is in the 3rd passage and separates aeration status, and the second passage is communicated with the 3rd passage.
2. the sequence valve of a kind of pneumatic control switched path according to claim 1, it is characterized in that: the inner face of described valve gap is stretched the protruding annular solid that has, the lateral wall of the leading section of spool and annular solid medial wall are slidingly matched to guarantee the axiality of spool slip, leading section at spool has several ventilative through holes, sealing gasket on the spool leading section and the 3rd passage are in released state, and this ventilative through hole makes being communicated with of the second passage and the 3rd passage.
3. the sequence valve of a kind of pneumatic control switched path according to claim 2 is characterized in that: also be provided with rubber ring between the sidewall of the leading section of described spool and the annular solid inwall and improve the smoothness that spool slides to eliminate the gap.
4. the sequence valve of the described a kind of pneumatic control switched path of according to claim 1-3 each is characterized in that: described spool is made of the leading section of spool, the middle part of valve body, the rearward end of spool and connection three's connecting rod.
5. the sequence valve of a kind of pneumatic control switched path according to claim 1, it is characterized in that: the rear end at the middle part of described valve body is set with described another sealing gasket.
6. according to claim 2 or the sequence valve of 3 described a kind of pneumatic control switched path, it is characterized in that: described flexible member is spring, this spring housing is located at described annular solid outer surface, and an end of spring is pressed on the valve gap, and the other end of spring is pressed on the middle part of spool.
7. the sequence valve of the described a kind of pneumatic control switched path of according to claim 1-3 each is characterized in that: be connected with control gas joint on the through hole of described external high voltage control gas.
8. the sequence valve of the described a kind of pneumatic control switched path of according to claim 1-3 each is characterized in that: be connected with the 3rd gas path joint on the 3rd passage on the described valve gap.
9. the sequence valve of the described a kind of pneumatic control switched path of according to claim 1-3 each is characterized in that: described the first passage is air intake, and described the second passage is the gas outlet, and described the 3rd passage is oxygen intake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220400921 CN202699821U (en) | 2012-08-14 | 2012-08-14 | Sequence valve capable of pneumatically controlling conversion of path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220400921 CN202699821U (en) | 2012-08-14 | 2012-08-14 | Sequence valve capable of pneumatically controlling conversion of path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202699821U true CN202699821U (en) | 2013-01-30 |
Family
ID=47580169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220400921 Expired - Fee Related CN202699821U (en) | 2012-08-14 | 2012-08-14 | Sequence valve capable of pneumatically controlling conversion of path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202699821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341973A (en) * | 2018-11-30 | 2019-02-15 | 广州新龙浩工业设备有限公司 | A kind of triple valve and inside and outside leak detection conversion equipment |
-
2012
- 2012-08-14 CN CN 201220400921 patent/CN202699821U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341973A (en) * | 2018-11-30 | 2019-02-15 | 广州新龙浩工业设备有限公司 | A kind of triple valve and inside and outside leak detection conversion equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20140814 |
|
| EXPY | Termination of patent right or utility model |