CN101766863A - Safety overflow valve - Google Patents
Safety overflow valve Download PDFInfo
- Publication number
- CN101766863A CN101766863A CN200810246780A CN200810246780A CN101766863A CN 101766863 A CN101766863 A CN 101766863A CN 200810246780 A CN200810246780 A CN 200810246780A CN 200810246780 A CN200810246780 A CN 200810246780A CN 101766863 A CN101766863 A CN 101766863A
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- valve
- safety overflow
- steel ball
- spring
- overflow valve
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Abstract
The invention provides a safety overflow valve comprising a valve body (1), a valve port part (2), a valve cap (3), a spring (4) and a steel ball (6), wherein the valve body (1) is provided with a valve cavity (7); the valve port part (2) is arranged on one end of the valve body (1), and a valve port (8) positioned on the valve port part (2) corresponds to the valve cavity (7); the valve cap (3) is arranged on the other end of the valve body (1) and is jointed with the valve cavity (7) through thread sealing; the spring (4) is contained in the valve cavity (7); and the steel ball (6) is positioned between the valve port (8) and the spring (4). The safety overflow valve can meet the requirements for low manufacture cost and convenient, fast and economic repair and maintenance by using the steel ball (6) of a standard part and a nonmetal gasket with scratch preventing property.
Description
Technical field
The present invention relates to a kind of safety overflow valve that is mainly used in the accurate medical breathing apparatus fields such as respirator, anesthetic machine.
Background technology
In the use of medical apparatus and instruments such as respirator, anesthetic machine, need carry out mechanical ventilation to the patient, for the patient who is receiving treatment, the size control of ventilation is extremely important, particularly to infant patient and Cavity in Critical Patients, not only need the accurate control of flow, more need the sensitivity reaction of safety overflow valve airway pressure.When requiring the excellent sealing of overflow valve under the air flue safe pressure and reaching upper pressure limit fast, accurately open.Therefore, safety overflow valve is very important for the control of aspects such as the precision of medical apparatus and instruments such as respirator, anesthetic machine, safety.
Safety overflow valve is divided into gravity type, lever, spring or the like by its structure and action principle, because of the volume of gravity type and lever safety overflow valve bigger, and the volume of spring type safety overflow valve little, be quick on the draw, so medical apparatus and instruments such as respirator and anesthetic machine are often selected the spring type safety overflow valve for use.At present, general spring type safety overflow valve mainly is made up of valve seat, spool, spring and valve gap, line contact between the valve port of dependence spool and valve seat reaches the effect of sealing, because respirator and anesthetic machine etc. are very high to sealing requirements, this quality of fit that just needs to improve spool and valve seat requires spool and valve port that the very high accuracy of form and position is arranged to realize its seal request.On the one hand, this has increased the manufacturing cost of part greatly, on the other hand, because the quality of fit of valve port and valve core chamber requires high, and valve uses over a long time or improper use is easy to cause the wearing and tearing of sealing surface, thereby cause the interchangeability between part very poor, the requirement of can't satisfy conveniently, economy also fast being keeped in repair.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the above-mentioned defective that safety overflow valve of the prior art exists, therefore, the object of the present invention is to provide a kind of safety overflow valve, it can not only satisfy the requirement of medical apparatus and instruments such as respirator, anesthetic machine to sealing and reaction sensitivity, and can realize making cheaply processing and fast, convenient and safe and economic maintenance and maintenance.
For addressing the above problem, realize purpose of the present invention, safety overflow valve of the present invention comprises: valve body has valve pocket; Valve port portion be arranged on an end of valve body, and the valve port of valve port portion is corresponding with valve pocket; Valve gap is arranged on the other end of valve body and engages by thread seal with valve pocket; And spring, be placed in valve pocket inside, in addition, safety overflow valve also comprises steel ball, steel ball is between valve port and spring.
Preferably, between steel ball and spring, also be provided with pad.
Preferably, valve port portion is plastic material and removably is connected with valve body.
Preferably, steel ball is a standard component.
Preferably, pad is nonmetal.
Preferably, the valve wall of valve body is provided with steam vent.
According to safety overflow valve of the present invention, on the one hand, elastic deformation by valve port portion and valve port contact with line between the steel ball, can satisfy the requirement of its sealing and sensitivity; On the other hand, owing to adopt the steel ball of standard component, thereby cost of manufacture is low, and the pad with anti-scratch performance is set between steel ball and spring can protects the steel ball can be not impaired because of spring force, prolongs steel ball service life; In addition, because valve port portion is detachable, thereby need not to adjust the pretightning force of spring when changing steel ball, thereby satisfy the requirement of convenient, fast, economic maintenance maintenance.
Description of drawings
Accompanying drawing constitutes the part of this description, and is used for illustrating principle of the present invention with this description.
Fig. 1 is the generalized section of safety overflow valve according to the preferred embodiment of the invention.
The specific embodiment
Describe the safety overflow valve of the preferred embodiment of the present invention below with reference to accompanying drawings in detail.
Fig. 1 is the generalized section of safety overflow valve according to the preferred embodiment of the invention, and as can be seen from Figure 1, safety overflow valve comprises according to the preferred embodiment of the invention: valve body 1, valve port portion 2, valve gap 3, spring 4, pad 5 and steel ball 6.Wherein, valve body 1 is essentially cylindrical, and its inside is formed with valve pocket 7, is formed with steam vent 9 (its effect will be described below) on the sidewall of this external valve body; Valve port portion 2 is preferred to adopt attrition resistant plastic material, and the periphery of this valve port portion 2 and valve body one end is threadably engaged together, and valve port portion also is provided with the valve port 8 corresponding with valve pocket 7; Valve gap 3 passes through threaded engagement with the other end of valve body 1, and particularly, valve gap 3 and valve pocket 7 are by being threaded togather, so that can screw in the decrement of the depth adjustment spring 4 of valve pockets by valve gap 3; Spring 4 is placed in the valve pocket, and steel ball 6 is arranged on the spring 4 and is being pressed against on the valve port 8 under the partial pressure of spring 4.Preferably, scratch steel ball, between spring 4 and steel ball 6, be provided with pad 5 for preventing spring.
Be example with the safety overflow valve that is arranged on a kind of therapeutic type respirator below, describe the operation principle of the safety overflow valve of the preferred embodiment of the present invention in conjunction with Fig. 1.Respirator is as a kind of assisted ventilation unit, comprise suction nozzle and exhaust tube, the patient is from the suction nozzle draw gas, safety overflow valve just is arranged on the air-breathing module of suction nozzle front end, be used for controlling the safe air pressure of air flue, the valve port portion 2 of safety overflow valve is arranged on breathes in the gas circuit, by adjusting the decrement that the degree of depth that valve gap 3 screws in valve pockets 7 is come regulating spring 4, thereby the pretightning force of spring is set, makes it reach the upper limit of the safe pressure of setting in the air flue.In the course of the work, when the air pressure in the gas circuit less than set safe pressure in limited time, by spring 4 compress gaskets 5 and steel ball 6, elastic deformation that produces by valve port 8 and valve port 8 contacts with line between the steel ball realizes the function that seals; On the safe pressure that the pressure in the air flue is set greater than respirator, prescribe a time limit, the pretightning force that gases at high pressure promotion steel ball 6 in the air flue overcomes spring 4 moves down, make steel ball 6 is pushed away valve port 8, thereby be discharged into the gases at high pressure in the air flue in the valve pocket apace, the gas that is discharged in the valve pocket is discharged by the steam vent on the valve body wall 9 again, thereby realizes the effect of the safe overflow of safety overflow valve.
In addition, safety overflow valve according to present embodiment, pad 5 preferably adopts hard gasket nonmetal and that have the anti-scratch function, to avoid steel ball 6 to contact with the rigidity of spring 4, and the surface that can prevent to scratch steel ball, simultaneously, adopt the pad of this kind material also to play compensator or trimmer pressure to a certain extent, reduce the effect that shakes and reduce noise; Steel ball 6 selection standard spares can guarantee that safety overflow valve in the concordance of changing between the steel ball back part, can reduce cost; Valve body 1 and valve port portion 2 adopt the separate type design, when needs maintenance or replacing steel ball, pad and spring, only valve port portion 2 need be pulled down from valve body 1 is replaceable steel ball or pad, do not need to pull down valve gap, the pretightning force that does not also need once more regulating spring, thereby, can realize convenient, fast, economic maintenance and maintenance.
Below only be the preferred embodiments of the present invention; be not to be used to limit the present invention; for a person skilled in the art; the present invention can have various changes and variation; all any modifications of within the spirit and principles in the present invention scope, being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. safety overflow valve, comprising: valve body (1) has valve pocket (7); Valve port portion (2) is arranged on an end of described valve body (1), and the valve port (8) of described valve port portion is corresponding with described valve pocket (7); Valve gap (3) is arranged on the other end of described valve body (1) and engages by thread seal with described valve pocket (7); And spring (4), be placed in described valve pocket (7) inside, it is characterized in that described safety overflow valve also comprises steel ball (6), described steel ball (6) is positioned between described valve port (8) and the described spring (4).
2. safety overflow valve according to claim 1 is characterized in that, also is provided with pad (5) between described steel ball (6) and described spring (4).
3. safety overflow valve according to claim 1 is characterized in that, described valve port portion (2) is plastic material and removably is connected with described valve body (1).
4. safety overflow valve according to claim 1 is characterized in that, described steel ball (6) is a standard component.
5. safety overflow valve according to claim 2 is characterized in that, described pad (5) is nonmetal.
6. safety overflow valve according to claim 1 is characterized in that, the valve wall of described valve body (1) is provided with steam vent (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810246780A CN101766863A (en) | 2008-12-29 | 2008-12-29 | Safety overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810246780A CN101766863A (en) | 2008-12-29 | 2008-12-29 | Safety overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101766863A true CN101766863A (en) | 2010-07-07 |
Family
ID=42500063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810246780A Pending CN101766863A (en) | 2008-12-29 | 2008-12-29 | Safety overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101766863A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029930A (en) * | 2012-12-14 | 2013-04-10 | 北京七星华创电子股份有限公司 | Switching connector for chemical liquid medicament storing tank |
| CN104906678A (en) * | 2015-06-09 | 2015-09-16 | 广州医科大学附属第一医院 | Ball moving type isolation and exhaust valve |
| WO2017067085A1 (en) * | 2015-10-23 | 2017-04-27 | 北京怡和嘉业医疗科技有限公司 | Ventilation control device and respiratory mask apparatus having same |
| WO2017067081A1 (en) * | 2015-10-23 | 2017-04-27 | 北京怡和嘉业医疗科技有限公司 | Ventilation control apparatus, and breathing mask device provided with ventilation control apparatus |
| CN111577695A (en) * | 2020-06-15 | 2020-08-25 | 裕泰液压科技(上海)有限公司 | Integral plug-in type valve core assembly for guide overflow valve |
| CN112013140A (en) * | 2020-08-28 | 2020-12-01 | 胡中和 | Be applied to relief valve on air compressor machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206338U (en) * | 1987-04-09 | 1988-04-13 | 无锡煤矿机械厂 | Three-purpose valve with throttle discharging |
| CN2030880U (en) * | 1988-06-04 | 1989-01-18 | 黄健武 | Back fire anti-explosive safety apparatus |
| CN2204903Y (en) * | 1994-11-24 | 1995-08-09 | 段贤琪 | Automatic alarming safety valve with air whistle |
-
2008
- 2008-12-29 CN CN200810246780A patent/CN101766863A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206338U (en) * | 1987-04-09 | 1988-04-13 | 无锡煤矿机械厂 | Three-purpose valve with throttle discharging |
| CN2030880U (en) * | 1988-06-04 | 1989-01-18 | 黄健武 | Back fire anti-explosive safety apparatus |
| CN2204903Y (en) * | 1994-11-24 | 1995-08-09 | 段贤琪 | Automatic alarming safety valve with air whistle |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029930A (en) * | 2012-12-14 | 2013-04-10 | 北京七星华创电子股份有限公司 | Switching connector for chemical liquid medicament storing tank |
| CN104906678A (en) * | 2015-06-09 | 2015-09-16 | 广州医科大学附属第一医院 | Ball moving type isolation and exhaust valve |
| WO2017067085A1 (en) * | 2015-10-23 | 2017-04-27 | 北京怡和嘉业医疗科技有限公司 | Ventilation control device and respiratory mask apparatus having same |
| WO2017067081A1 (en) * | 2015-10-23 | 2017-04-27 | 北京怡和嘉业医疗科技有限公司 | Ventilation control apparatus, and breathing mask device provided with ventilation control apparatus |
| CN111577695A (en) * | 2020-06-15 | 2020-08-25 | 裕泰液压科技(上海)有限公司 | Integral plug-in type valve core assembly for guide overflow valve |
| CN112013140A (en) * | 2020-08-28 | 2020-12-01 | 胡中和 | Be applied to relief valve on air compressor machine |
| CN112013140B (en) * | 2020-08-28 | 2022-04-29 | 大庆烯城炟石油技术开发有限公司 | Be applied to relief valve on air compressor machine |
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Application publication date: 20100707 |