CN101839822A - Pneumatic and manual dual-purpose sampling valve - Google Patents
Pneumatic and manual dual-purpose sampling valve Download PDFInfo
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- CN101839822A CN101839822A CN 201010183261 CN201010183261A CN101839822A CN 101839822 A CN101839822 A CN 101839822A CN 201010183261 CN201010183261 CN 201010183261 CN 201010183261 A CN201010183261 A CN 201010183261A CN 101839822 A CN101839822 A CN 101839822A
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- sample
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Abstract
The invention provides a sampling valve comprising a valve body, a valve core, a cylinder body and a piston control assembly, wherein the valve core and the cylinder body are arranged in the valve body, the piston control assembly is arranged in the cylinder body, and the valve body is arranged below the cylinder body and is provided with a feed port and a discharge hole; the upper end of the valve core is connected with the piston control assembly, and the lower end of the valve core is connected and provided with a sealed drain plug which seals the feed port; the valve core is provided with a spacing groove along a valve core shaft; and the inner wall of the valve body is provided with a spacing chuck in sliding fit with the spacing groove. The sampling valve provided by the invention can realize all-around spacing to the valve core and the situation that the external sealing material of the sealed drain plug is damaged because of valve core spinning can not occurred. In addition, the sealed drain plug of the invention adopts the mode of combining ethylene propylene rubber with cheap inside and Teflon with expensive outside to ensure sealed drain plug performance and lower cost thereof at the same time.
Description
Technical field
The present invention relates to a kind of sample valve, is a kind of sample valve that can be used for liquid or gas sample specifically.
Background technology
Sample valve is a kind of valve that material carries out constituent analysis that is used to gather, and now has been widely used in industries such as food, medicine.
In the prior art, Chinese patent CN2864657Y discloses a kind of automatic sample valve, it comprises valve body and spool, described valve body comprises cylinder barrel, piston, bonnet, cylinder bar and advances/discharging opening, described cylinder bar outer end is connected with an end of described spool, described cylinder bar the inner is fixedly connected on the described piston end face, and described bonnet is connected the end of cylinder barrel; In addition, described automatic sample valve also is provided with drive unit and automaton, and described drive unit can select to be set to cylinder, and described cylinder is realized pneumatic sampling by the air intake opening that is arranged on the described valve body.In this technology, can also realize manually sampling by the manual overvide that is arranged on the described valve body, described manual overvide comprises: handle, connecting rod and handle back-moving spring, connecting rod one end connects handle, the other end connects spool, the handle back-moving spring is socketed on the described connecting rod, by back-moving spring handle is resetted.
In above-mentioned prior art, described sample valve can pass through described air intake opening blanketing gas in described cylinder barrel, pressure by described gas is realized the promotion to described piston, described piston is moving on the described cylinder bar of drive under the described gas effect, the cylinder bar drives on the spool and moves simultaneously, open sample valve, and take a sample by discharging opening; If when manually taking a sample, then drive described connecting rod, cylinder bar successively and then drive described spool and move up by turning handle, take a sample thereby described sample valve opened.
Above-mentioned sample valve has only been taked spacing setting up and down by being provided with of support ring to the cylinder bar, promptly limits the upper and lower displacement of described cylinder bar and a stroke of described cylinder body inner carrier and adapts.Described spool outer setting has sealing material layer, take mostly to be threaded between described spool and the described cylinder bar, owing to spin about described cylinder bar is not limited, stating sample valve so in the use carries out in pneumatic sampling or the manual process of taking a sample, this kind connected mode is easy to because long-term use causes the connection between described spool and the described cylinder bar to slide, be easy in the process that the cylinder bar moves up and down, cause the spin of described cylinder bar like this, when sample valve is sealed, the spin of cylinder bar drives described spool spin, described spool contacts spin with described valve interior wall again, thereby caused the damage of valve interior wall, and then influenced the sealing effectiveness of sample valve the spool outer sealing material.In addition, damage, improved the maintenance cost of sample valve owing to described above-mentioned reason also is easy to cause the connection between described cylinder bar and the described spool.
Summary of the invention
For this reason, technical matters to be solved by this invention is the stop means that spins about sample valve of the prior art is not provided with, make and after long-time the use, cause the slip that is threaded between described spool and the described cylinder bar easily, cause the damage of seal plug outer sealing material easily owing to the spin of cylinder bar, and then influence the problem of sample valve sealing property, can realize simultaneously up and down and the left and right sides is spacing and can not occur because the spin of cylinder bar causes the sample valve of the encapsulant damage of described seal plug outside described cylinder bar thereby provide a kind of.
For solving the problems of the technologies described above, sample valve of the present invention comprises cylinder body, is positioned at the piston Control Component of described cylinder body,
Valve body is arranged at the below of described cylinder body;
Charging aperture and discharging opening are arranged on the described valve body;
Dynamic medium is imported and exported, and is arranged on the described cylinder body;
Spool is arranged in the described valve body, and the upper end of described spool links to each other with described piston Control Component; The lower end of described spool is connected with the seal plug that described charging aperture is sealed;
To offering stopper slot, the inwall of described valve body is provided with the spacing dop that matches and slide with described stopper slot in the described poppet shaft in described spool upper edge;
The height of described stopper slot is greater than or equal to the unidirectional range of described piston Control Component.
Wherein, described piston Control Component comprises the piston that is positioned at described cylinder body, and the biasing member of the described piston that is used to reset; The upper end of described spool links to each other with described piston; Described dynamic medium is imported and exported and is positioned at described piston bottom.
Described sample valve also includes handle, and the top that described cylinder body is extended in the upper end of described spool is connected by cam with described handle.
Described spacing dop is a pin.
The width of described stopper slot equals the width of described spacing dop.
Described discharging opening is two, and one of them discharging opening is the sterilization mouth.
Described seal plug is made up of internal layer and the skin that is coated on described internal layer outside, and described internal layer is the EP rubbers layer, and described skin is a polytetrafluoroethylene floor.
Described biasing member is a volute spring.
Described volute spring is a double-helix spring, and is separately positioned on the both sides of described spool.
Wherein, described piston Control Component is controlled described piston and can be carried out correspondingly upper and lower displacement in dynamic medium input or when discharging.
The present invention compared with prior art has the following advantages:
(1) sample valve of the present invention, stopper slot in axial direction is set on described spool, and spacing dop is set on the inwall of described valve body, cooperation by described stopper slot and described spacing dop is slided, guaranteed that on the one hand the spool in the described sample valve can slide up and down along described spacing dop, realize the sealing and the unlatching of sample valve, slide up and down in the process along described spacing dop at described spool, the slip because described stopper slot and described spacing dop match, so stopper slot defines spacing dop simultaneously and can only slide along the longitudinal, rotate and can't carry out horizontal spin, so sample valve of the present invention has also guaranteed under any circumstance on the other hand, described spool the phenomenon that spins can not occur, even if like this under being connected of described spool and described seal plug loosening situation, can be owing to the spool spin causes the encapsulant of seal plug outside to suffer that the friction of valve interior wall causes damage yet, influence the sealing effectiveness of seal plug, thereby improved the safety in utilization and the reliability of sample valve on the whole, also reduced the maintenance cost of sample valve.
In addition, the height of the described stopper slot of the further restriction of sample valve of the present invention is greater than or equal to the unidirectional range of described piston Control Component, guaranteed the spacing influence that can not cause of stopper slot and spacing dop, thereby guaranteed the operate as normal of sample valve spool proper motion in the sample valve.
(2) sample valve of the present invention, described seal plug is set to be made up of internal layer and the skin that is coated on described internal layer outside, described internal layer is the EP rubbers material layer, described skin is a polytetrafluoroethylene floor, all adopt the material of EP rubbers in the prior art as seal plug, the present invention coats polytetrafluoroethylene floor in described EP rubbers material layer outside, thereby has improved on the whole the heat-resisting quantity and the corrosion resistance of seal plug, the serviceable life of having improved seal plug.In addition, seal plug is not set to polytetrafluoroethylmaterial material fully in the sample valve of the present invention, but with comparatively inexpensive EP rubbers as internal layer, be aided with teflon for outer, when guaranteeing the seal plug performance, also reduced its cost on the whole.
(3) described biasing member is set in the sample valve of the present invention and is two biasing members, and two biasing members are separately positioned on the both sides of described spool, increased the rebound effect power of described biasing member like this to described spool, realized resetting fast of sampling back valve core, be beneficial to of the quick sealing of described seal plug the sample valve charging aperture.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below according to a particular embodiment of the invention and in conjunction with the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the axial cut-open view that the pneumatic sample valve of a discharging opening only is set of the present invention;
Fig. 2 is for being provided with the spool synoptic diagram of stopper slot in the sample valve of the present invention;
Fig. 3 is the axial cut-open view with Pneumatic and manual dual-purpose sampling valve of two discharging openings of the present invention;
Reference numeral is expressed as among the figure: the 1-valve body, and the 2-charging aperture, the 3-discharging opening, the 4-cylinder body, the 5-biasing member, 6-piston, 7-dynamic medium are imported and exported, 8-spool, 9-seal plug, the spacing dop of 10-, 11-handle, the 12-mouth of sterilize, 13-cam, 14-stopper slot.
Embodiment
Be sample valve of the present invention as shown in Figure 1, described as we can see from the figure sample valve comprises cylinder body 4, is positioned at the piston Control Component of described cylinder body 4, described piston Control Component by piston 6 and with described piston 6 inconsistent be connected be used to reset the biasing member 5 of described piston 6, described in the present embodiment biasing member 5 is a volute spring, and it is one that number is set; Also be provided with dynamic medium and import and export 7 on the cylinder body 4 below the described piston 6, described dynamic medium is imported and exported 7 and is used for input or outputting power medium, moves to piston 6 power source is provided; In addition, below described cylinder body 4 valve body 1, described valve body 1 and described cylinder body 4 are tightly connected, and described valve body is provided with charging aperture 2 and discharging opening 3.Comprise also in the sample valve of the present invention that a vitals is a spool 8, described spool 8 is arranged at described valve body 1 inside, and its upper end links to each other with described piston 6 in the described piston Control Component; The lower end of described spool 8 is connected with the seal plug 9 that described charging aperture 2 is sealed; Seal plug 9 in the present embodiment is made by the EP rubbers material.
Carry out in the process of work at sample valve, realize realizing spin about spool 8 motions spacing up and down the time spacing in order to be implemented in to spool 8 motion, sample valve of the present invention is offered stopper slot 14 on described spool 8, the form that is provided with of described stopper slot 14 can be referring to Fig. 2, be equipped with spacing dop 10 with described stopper slot 14, described spacing dop 10 is arranged on the inwall of described valve body, and described in the present embodiment spacing dop 10 selects to be set to pin.Certainly, as embodiment that can conversion, stopper slot 14 of the present invention and spacing dop 10 are not limited to above-mentioned form, it can select the stopper slot 14 and the spacing dop 10 that use any form can cooperate slip, as long as can be in the action that realizes spinning about limit described spacing dop 10 when spacing dop 10 freely slides up and down described stopper slot 14 in can not occur in described stopper slot 14.
But, when stopper slot 14 of the present invention is set, also to fully take into account and drive the described volute spring of described piston 6 compressions at dynamic medium and carry out in the process of displacement, drive described spool 8 and carry out the upper and lower displacement slip, so must considering, the height setting of stopper slot 14 to adapt with the upper and lower displacement of described spool 8, promptly to equal the unidirectional range of described piston 6 at least, so just can guarantee to cooperate the normal travel that can not have influence on piston 6 in the spacing process about stopper slot 14 and pin carry out, guarantee the normal use of sample valve.
When sample valve of the present invention is stated setting in realization, the width that also limits described stopper slot 14 in the present embodiment equals the width of described spacing dop 10, can guarantee the phenomenon that spins about described spacing dop 10 can not occur in described stopper slot 14 so better.
Sample valve described in the present embodiment in use, import and export 7 by described dynamic medium and in described cylinder body 4, import dynamic medium, select gas as dynamic medium among the present invention, when gas imports and exports 7 when being transfused in the air chamber of described cylinder body 4 by described dynamic medium, gas promotes to move on the described piston 6, piston 6 is compression helical spring in last moving, and drive described spool 8 and move up, the seal plug 9 that is arranged at described spool 8 bottoms when described spool 8 moves is raised, the charging aperture 2 and the described discharging opening 3 of described sample valve are opened, and liquid to be detected extracts from described discharging opening 3.After sampling finishes, dynamic medium is imported and exported 7 from described dynamic medium discharges, when discharging, described volute spring promotes described piston 6 and resets under the effect of biasing force, spool 8 also moves down together simultaneously, and after described volute spring discharged its biasing force, described piston 6 was got back to the equilibrium position, simultaneously seal plug 9 is got back to original position, and the charging aperture 2 and the discharging opening 3 of sample valve sealed.
Fig. 3 has provided the another embodiment of sample valve of the present invention, sample valve described in this embodiment, the upper end of its spool 8 is run through described piston 6 and is extended and passes described cylinder body 4 tops and be connected with handle 11, connection between described handle 11 and the described spool 8 is connected by cam 13, described handle 11 can upwards be pulled along the junction of described handle 11 and described spool 8, thereby can utilize the pneumatic parts that are provided with to realize manually control sampling.
In the present embodiment, in described cylinder body 4 and the two ends that are positioned at described spool 8 volute spring is set respectively, referring to shown in Figure 3.
Two discharging openings are set on described valve body in the present embodiment, and one of them discharging opening 3 is used for sampling, and another discharging opening 12 can be as the sterilization mouth.
Sample valve described in the present embodiment in use, by operating described handle 11, described handle 11 is upwards cocked, and drive described spool 8 and upwards mention, described seal plug 9 is raised opens charging aperture 2, behind the extraction sample, pulls described handle 11 and gets back to original position, simultaneously seal plug 9 is got back to original position, and the charging aperture 2 and the discharging opening 3 of sample valve sealed.
Sample valve in the present embodiment is in when sterilization, and high pressure steam enters in the described valve body by described sterilization mouth 12, in the described valve body, charging aperture 2 and discharging opening 3 carry out disinfection.
The above only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among protection scope of the present invention.
Claims (9)
1. sample valve comprises cylinder body, is positioned at the piston Control Component of described cylinder body,
Valve body is arranged at the below of described cylinder body;
Charging aperture and discharging opening are arranged on the described valve body;
Dynamic medium is imported and exported, and is arranged on the described cylinder body;
Spool is arranged in the described valve body, and the upper end of described spool links to each other with described piston Control Component;
The lower end of described spool is connected with the seal plug that described charging aperture is sealed;
It is characterized in that to offering stopper slot, the inwall of described valve body is provided with the spacing dop that matches and slide with described stopper slot in the described poppet shaft in described spool upper edge;
The height of described stopper slot is greater than or equal to the unidirectional range of described piston Control Component.
2. sample valve according to claim 1 is characterized in that, described piston Control Component comprises the piston that is positioned at described cylinder body, and the biasing member of the described piston that is used to reset;
The upper end of described spool links to each other with described piston;
Described dynamic medium is imported and exported and is positioned at described piston bottom.
3. sample valve according to claim 2 is characterized in that described sample valve also includes handle, and the top that described cylinder body is extended in the upper end of described spool is connected by cam with described handle.
4. according to claim 1 or 3 described sample valves, it is characterized in that described spacing dop is a pin.
5. sample valve according to claim 4 is characterized in that, the width of described stopper slot equals the width of described spacing dop.
6. according to claim 1 or 3 or 5 described sample valves, it is characterized in that described discharging opening is two, one of them discharging opening is the sterilization mouth.
7. according to claim 1 or 3 described sample valves, it is characterized in that described seal plug is made up of internal layer and the skin that is coated on described internal layer outside, described internal layer is the EP rubbers layer, and described skin is a polytetrafluoroethylene floor.
8. sample valve according to claim 2 is characterized in that, described biasing member is a volute spring.
9. sample valve according to claim 8 is characterized in that described volute spring is a double-helix spring, and is separately positioned on the both sides of described spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010183261 CN101839822A (en) | 2010-05-26 | 2010-05-26 | Pneumatic and manual dual-purpose sampling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010183261 CN101839822A (en) | 2010-05-26 | 2010-05-26 | Pneumatic and manual dual-purpose sampling valve |
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| Publication Number | Publication Date |
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| CN101839822A true CN101839822A (en) | 2010-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010183261 Pending CN101839822A (en) | 2010-05-26 | 2010-05-26 | Pneumatic and manual dual-purpose sampling valve |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798550A (en) * | 2012-09-07 | 2012-11-28 | 无锡锡通工程机械有限公司 | Material sampling device |
| CN104266868A (en) * | 2014-09-28 | 2015-01-07 | 四川德成动物保健品有限公司 | Anti-pollution sampler for liquid medicine in liquid preparing tank |
| CN104266867A (en) * | 2014-09-28 | 2015-01-07 | 四川德成动物保健品有限公司 | Sampling device capable of preventing powder in preparation tank from being taken |
| CN104280264A (en) * | 2014-10-28 | 2015-01-14 | 无锡大东机械制造有限公司 | Actuating mechanism of telescopic spiral pneumatic sampler |
| CN104275117A (en) * | 2014-09-28 | 2015-01-14 | 四川德成动物保健品有限公司 | Drug dispensing tank capable of facilitating drug liquid sampling |
| CN109883774A (en) * | 2019-03-27 | 2019-06-14 | 青岛金仕达电子科技有限公司 | A kind of ambient air sampling acquires canned clamp mechanism and application method |
| CN113504338A (en) * | 2021-05-20 | 2021-10-15 | 海口豪丰裕化工有限公司 | Intelligent detection system for quality of inorganic chemical raw materials and application method thereof |
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| US4577515A (en) * | 1984-06-19 | 1986-03-25 | Tokyo Rika Kikai Co., Ltd. | Sampling valve for use in high-speed liquid chromatography |
| US6360619B1 (en) * | 1999-08-23 | 2002-03-26 | Robert L. Schultz, Jr. | Aviation fuel sampling safety valve assemblies |
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| CN201681000U (en) * | 2010-05-26 | 2010-12-22 | 浙江远安流体设备有限公司 | Pneumatic-manual two-purpose sampling valve |
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2010
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3541860A (en) * | 1969-03-18 | 1970-11-24 | Goodyear Tire & Rubber | Pressure vessel sampling device |
| US4577515A (en) * | 1984-06-19 | 1986-03-25 | Tokyo Rika Kikai Co., Ltd. | Sampling valve for use in high-speed liquid chromatography |
| US6360619B1 (en) * | 1999-08-23 | 2002-03-26 | Robert L. Schultz, Jr. | Aviation fuel sampling safety valve assemblies |
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| CN201429522Y (en) * | 2009-07-01 | 2010-03-24 | 乐山电业局修理试验所 | Needle-shaped sampling valve of charged oil sampling device for oil immersed bushing of transformer |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798550A (en) * | 2012-09-07 | 2012-11-28 | 无锡锡通工程机械有限公司 | Material sampling device |
| CN102798550B (en) * | 2012-09-07 | 2014-06-11 | 无锡锡通工程机械有限公司 | Material sampling device |
| CN104266868A (en) * | 2014-09-28 | 2015-01-07 | 四川德成动物保健品有限公司 | Anti-pollution sampler for liquid medicine in liquid preparing tank |
| CN104266867A (en) * | 2014-09-28 | 2015-01-07 | 四川德成动物保健品有限公司 | Sampling device capable of preventing powder in preparation tank from being taken |
| CN104275117A (en) * | 2014-09-28 | 2015-01-14 | 四川德成动物保健品有限公司 | Drug dispensing tank capable of facilitating drug liquid sampling |
| CN104280264A (en) * | 2014-10-28 | 2015-01-14 | 无锡大东机械制造有限公司 | Actuating mechanism of telescopic spiral pneumatic sampler |
| CN109883774A (en) * | 2019-03-27 | 2019-06-14 | 青岛金仕达电子科技有限公司 | A kind of ambient air sampling acquires canned clamp mechanism and application method |
| CN109883774B (en) * | 2019-03-27 | 2023-11-10 | 青岛金仕达电子科技有限公司 | Ambient air sample collection canning clamp mechanism and use method |
| CN113504338A (en) * | 2021-05-20 | 2021-10-15 | 海口豪丰裕化工有限公司 | Intelligent detection system for quality of inorganic chemical raw materials and application method thereof |
| CN113504338B (en) * | 2021-05-20 | 2023-09-29 | 株洲市海发气体有限公司 | Intelligent detection system for quality of inorganic chemical raw materials and application method thereof |
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Application publication date: 20100922 |