CN113049757B - Continuous piston type air distribution device for experiment - Google Patents
Continuous piston type air distribution device for experiment Download PDFInfo
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- CN113049757B CN113049757B CN202110348147.XA CN202110348147A CN113049757B CN 113049757 B CN113049757 B CN 113049757B CN 202110348147 A CN202110348147 A CN 202110348147A CN 113049757 B CN113049757 B CN 113049757B
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- gas
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- containing cavities
- gas distribution
- distribution box
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
- G01N2033/0072—Arrangements to check the analyser by generating a test gas
Abstract
The invention relates to the field of auxiliary equipment for sensor experiments, in particular to a continuous piston type gas distribution device for experiments, which comprises a gas distribution box body, wherein a plurality of containing cavities for containing different gas concentrations are arranged in the gas distribution box body, the containing cavities are mutually independent, a sealing cover plate for sealing the containing cavities is arranged at the top of the gas distribution box body, piston assemblies for sealing and compressing internal gas are arranged on the containing cavities, through holes for guiding gas into the containing cavities are formed in the piston assemblies, sealing sleeves for initially sealing the through holes are arranged on the piston assemblies, exhaust ports are arranged on the inner walls of the containing cavities at the center of the gas distribution box body and communicated with a cylinder through a gas pipe, movable plates for blocking the exhaust ports in an initial state are arranged in the containing cavities, a reset piece is arranged between the movable plates and the bottom walls of the containing cavities, and the top ends of the movable plates extend out of the sealing cover plate. The invention can continuously distribute gas for the cylinder through the gas stored in the plurality of chambers, thereby simplifying the gas distribution steps of the original scheme.
Description
Technical Field
The invention relates to the field of auxiliary equipment of sensor experiments, in particular to a continuous piston type gas distribution device for experiments.
Background
The sensor is a component for detecting specific substances or parameter concentrations and the like, after the sensor is produced, the detection result of the sensor needs to be verified, for example, when the gas sensor sensitive to alcohol is used for detecting, the gas sensor needs to be used for detecting alcohol gas with different concentrations, and the alcohol gas needs to be stored through the gas distribution device in advance.
At present, the gas distribution method used in the experiment is to heat and evaporate solution in a cylinder, so that the gas generated by evaporation meets the experiment requirement.
Disclosure of Invention
The invention aims to provide a continuous piston type gas distribution device for experiments, and aims to solve the problem that the existing experimental gas distribution method is complex to operate when the concentration of gas is changed.
The experimental continuous piston type gas distribution device comprises a gas distribution box body, a plurality of containing cavities which contain different gas concentrations are arranged in the gas distribution box body, the containing cavities are mutually independent, a sealing cover plate which seals the containing cavities is arranged at the top of the gas distribution box body, piston assemblies which are used for sealing and compressing internal gas are arranged on the containing cavities, through holes for guiding the gas into the containing cavities are formed in the piston assemblies, sealing sleeves which seal the through holes initially are arranged on the piston assemblies, exhaust ports are formed in the inner walls, located at the center of the gas distribution box body, of the containing cavities, the exhaust ports are communicated with a cylinder through gas pipes, movable plates which block the exhaust ports in the initial state are arranged in the containing cavities, reset pieces are arranged between the movable plates and the bottom walls of the containing cavities, and the sealing cover plate extends out of the top ends of the movable plates.
The beneficial effect of this scheme is:
in the experimental process, gas is filled into each accommodating cavity through the through hole to form gas with different concentrations, the whole device does not need to be opened for operation, and the through hole can be used for conveniently filling gas into the accommodating cavities; when the gas in any accommodating cavity is used, the movable plate corresponding to the accommodating cavity is pulled to expose the exhaust port, the gas enters the cylinder through the gas pipe for use, and after the gas is led out, the movable plate is loosened, so that the movable plate automatically resets under the action of the resetting piece and covers the exhaust port again; after the gas in the accommodating cavity is guided away, the gas pressure in the accommodating cavity changes, the piston assembly compresses the gas in the accommodating cavity, and after the gas in the accommodating cavity is reduced, the remaining gas can be pressed out by pushing the piston assembly.
Compared with the existing gas distribution method, the gas distribution method has the advantages that the gases with different concentrations stored in the containing cavities are provided, each cavity is provided with an independent inflation channel and an independent exhaust channel, experimental errors caused by concentration change due to gas mixing can be prevented, the gases stored in the cavities can be continuously distributed for the cylinders, and the gas distribution steps of the original scheme are simplified.
Further, the piston assembly comprises a piston rod, the end of the piston rod extends out of the sealing cover plate, a pressing plate is fixedly arranged on the end, located in the accommodating cavity, of the piston rod, and sealing rubber is fixedly arranged on the end edge of the pressing plate.
The beneficial effects are that: because it has the gas of certain concentration to hold the intracavity storage, the atmospheric pressure that holds the intracavity can be greater than external environment's atmospheric pressure, when deriving gas through the gas vent, the clamp plate can the downstream, sealing rubber can guarantee the clamp plate and hold the gas tightness between the intracavity wall, when holding intracavity gas less, drive the clamp plate through promoting the piston rod downstream and push down and extrude gas, and, in the use gas process, can also stretch into the position that holds the chamber through the piston rod and judge the quantity that holds intracavity gas.
Furthermore, seal cover threaded connection is on the piston rod is located the tip that holds the chamber outside, the through-hole is located the piston rod, set firmly the sealed head that can insert the through-hole on the inside wall of seal cover.
The beneficial effects are that: through the sealing head on seal cover and the inner wall, can seal when not filling gas into holding the chamber, it is more convenient to use.
Furthermore, a support column is fixedly arranged at the center of the gas distribution box body, the accommodating cavities are triangular prism-shaped, and the accommodating cavities are arranged into a pentagonal prism shape by taking the support column as the center.
The beneficial effects are that: the support column can keep the independence of a plurality of holding chambers, and simultaneously, the holding chambers are arranged into the pentagonal prism shape, can simultaneously store five gases with different concentrations, and continuously supply gas for the cylinder.
Further, the lateral wall of support column has set firmly the sleeve, the space has between the lateral wall of sleeve and support column, the fly leaf is the arc, the fly leaf clearance fit is between sleeve and support column, the seal layer has set firmly on the fly leaf one side towards the gas vent.
The beneficial effects are that: through the outer sleeve of support column, can carry on spacingly to the fly leaf, the sealing layer can keep the leakproofness when the gas vent is shielded to the fly leaf simultaneously, and the fly leaf and clamp plate can also be kept apart to the sleeve, and the removal of fly leaf can not disturb the clamp plate, keeps clamp plate and the gas tightness that holds the intracavity wall.
Furthermore, a positioning column is fixedly arranged in the sealing head, a spiral rubber sleeve is fixedly arranged outside the positioning column, a spiral groove is formed in the inner wall of the through hole, the inner wall surface of the groove is an arc surface, and the groove is matched with the rubber sleeve.
The beneficial effects are that: the spiral grooves in the positioning columns, the rubber sleeves and the inner walls of the through holes can enable the sealing heads to be quickly inserted into and positioned in the through holes, and air leakage caused by the fact that the sealing heads are not accurately inserted into the through holes is avoided.
Drawings
FIG. 1 is a perspective view of a first embodiment of a continuous piston type air distribution device for experiments according to the present invention;
FIG. 2 is a longitudinal sectional view of a seal cartridge in a second embodiment of the experimental continuous piston type gas distribution device of the present invention;
FIG. 3 is a longitudinal cross-sectional view of a third pressure plate of the experimental continuous piston type air distribution device of the present invention.
Detailed Description
The following is a detailed description of the preferred embodiments.
Reference numerals in the drawings of the specification include: distribution box 1, hold chamber 2, clamp plate 3, piston rod 4, seal cover 5, fly leaf 6, support column 7, sleeve 8, reference column 9, rubber sleeve 10, horizontal bar hole 11, vertical bar hole 12, switch 13, air inlet 14, exhaust tube 15.
Example one
The continuous piston type air distribution device for the experiment is shown in figure 1: the gas distribution box comprises a gas distribution box body 1, wherein a plurality of containing cavities 2 containing different gas concentrations are arranged in the gas distribution box body 1, the containing cavities 2 are mutually independent, and the top of the gas distribution box body 1 is covered with a sealing cover plate for sealing the containing cavities 2; the piston assembly that gas tightness cooperation has the interior gas that is used for sealing and compression on the sealed apron, piston assembly with hold 2 one-to-one in chamber, piston assembly includes piston rod 4, 4 gas tightness cooperation of piston rod promptly is on sealed apron, 4 tip of piston rod stretch out sealed apron, the welding has clamp plate 3 on the tip that piston rod 4 is located to hold 2 in chamber, 3 border contacts the inner wall that holds 2 in chamber of clamp plate, the last bonding of the end border of clamp plate 3 has sealing rubber, only drawn clamp plate 3 in one holds 2 in the chamber and indicates in figure 1.
Offer the gaseous through-hole of directional chamber 2 leading-in that holds on the piston assembly, threaded connection has initial seal cover 5 who lives the through-hole on the piston assembly, promptly: seal cover 5 threaded connection is on piston rod 4 is located the tip that holds 2 outsides of chamber, and the through-hole is located piston rod 4, and the through-hole runs through piston rod 4 and clamp plate 3, bonds on the inside wall of seal cover 5 to have the sealed head that can insert the through-hole.
The inner walls of the containing cavities 2, which are positioned at the center of the gas distribution box body 1, are provided with gas outlets, the gas outlets are close to the bottom of the containing cavities 2, the gas outlets are communicated with a cylinder through gas pipes, a support column 7 is welded at the center of the gas distribution box body 1, the containing cavities 2 are triangular prism-shaped, and the containing cavities 2 are arrayed into a pentagonal prism shape by taking the support column 7 as the center; the welding of having sleeve 8 through the support piece on the lateral wall of support column 7, the space has between the lateral wall of sleeve 8 and support column 7, hold and all install the fly leaf 6 that plugs up the gas vent when initial condition in chamber 2, fly leaf 6 is the arc, fly leaf 6 clearance fit is between sleeve 8 and support column 7, fly leaf 6 bonds on one side towards the gas vent has the sealing layer, the joint has the piece that resets between fly leaf 6 and the diapire that holds chamber 2, the available current spring of the piece that resets, sealed apron is stretched out on the top of fly leaf 6.
The specific implementation process is as follows:
before the gas distribution device is used, gas is filled into each accommodating cavity 2 through the through hole to form gas with different concentrations, the whole device does not need to be opened for operation, and the through hole can be used for conveniently filling gas into the accommodating cavities 2; when the gas in any accommodating cavity 2 is used, the movable plate 6 corresponding to the accommodating cavity 2 is pulled to expose the exhaust port, the gas enters the cylinder through the gas pipe for use, and after the gas is guided out, the movable plate 6 is loosened, so that the movable plate 6 automatically resets under the action of the reset piece and covers the exhaust port again; after the gas in the chamber 2 that holds is led away, the atmospheric pressure in the chamber 2 that holds produces the change, lets the gas in the piston assembly compression chamber 2 that holds, after the gas reduces in the chamber 2 that holds, can extrude remaining gas through promoting piston assembly.
Example two
The difference from the first embodiment is that, as shown in fig. 2, a positioning column 9 is bonded in the sealing head, a spiral rubber sleeve 10 is bonded outside the positioning column 9, a groove with a spiral inner wall is formed on the inner wall of the through hole, the inner wall surface of the groove is an arc surface, and the groove is matched with the rubber sleeve 10.
When screwing seal cover 5 on piston rod 4, insert in the through-hole earlier 9 tip of reference column, let the spiral groove on rubber sleeve 10 and the through-hole inner wall can let sealed head insert fast and fix a position the through-hole on, avoid sealed head not accurately to insert the through-hole and lead to leaking gas.
EXAMPLE III
The difference from the first embodiment is that, as shown in fig. 3, a plurality of horizontal bar-shaped holes 11 are formed in the pressure plate 3, a plurality of air inlets 14 communicated with the horizontal bar-shaped holes 11 are formed in the top end surface of the pressure plate 3, the air inlets 14 correspond to the horizontal bar-shaped holes 11 one by one, one side orifice of each horizontal bar-shaped hole 11 is close to the peripheral edge of the pressure plate 3 and does not penetrate through the peripheral edge of the pressure plate 3, a plurality of vertical bar-shaped holes 12 are formed in the inner wall of the piston rod 4, an orifice at the top of each vertical bar-shaped hole 12 is located on the outer side wall of the piston rod 4, the horizontal bar-shaped holes 11 are communicated with the vertical bar-shaped holes 12, an air suction pipe 15 is bonded to the orifice of each vertical bar-shaped hole 12, an air suction pump is connected to the air suction pipe 15, and the air suction pump can be an existing micro air pump; the aspiration pump is complete with switch 13, switch 13 can be with current rocker switch, switch 13 installs on the inner wall that holds chamber 2, it has the seal membrane of sealing outside switch 13 to bond on the inner wall that holds chamber 2, prevent gas leakage, the one end orientation top that is pressed when switch 13 closes, clamp plate 3 presses when holding chamber 2 intussuseption and being full of gas and closes and the one end department that is pressed at switch 13.
In the moving process of the pressure plate 3, because the pressure plate 3 is in contact friction with the inner wall of the accommodating cavity 2, the periphery of the pressure plate 3 can generate heat due to friction, and therefore the gas concentration in the space between the accommodating cavity 2 and the pressure plate 3 is changed. In the third embodiment, when the pressing plate 3 moves downward, the pressing plate 3 pushes the power switch 13 to open, the air pump is powered on, and air in the horizontal strip-shaped hole 11 and the vertical strip-shaped hole 12 is pumped away by the air pump, so that the dissipation of heat generated by friction at the peripheral part of the pressing plate 3 is accelerated, and the change of the gas concentration in the gas distribution box 1 due to heat is prevented; simultaneously, after covering sealed apron on distribution box 1, air inlet 14 is located the top face of clamp plate 3, can also reduce the air that gets into horizontal bar hole 11 and vertical bar hole 12 from air inlet 14 and the gaseous temperature difference in distribution box 1.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several variations and modifications can be made, which should also be considered as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (4)
1. The utility model provides a continuous piston distributing device for experiments, includes the distributing box body, its characterized in that: the gas distribution box is characterized in that a plurality of containing cavities for containing different gas concentrations are arranged in the gas distribution box body, the containing cavities are mutually independent, a sealing cover plate for sealing the containing cavities is arranged at the top of the gas distribution box body, piston assemblies for sealing and compressing internal gas are arranged on the containing cavities, through holes for leading gas into the containing cavities are formed in the piston assemblies, sealing sleeves for initially sealing the through holes are arranged on the piston assemblies, exhaust ports are arranged on the inner walls of the containing cavities, which are positioned at the center of the gas distribution box body, and are communicated with a cylinder through gas pipes, movable plates for plugging the exhaust ports in the initial state are arranged in the containing cavities, a reset piece is arranged between the movable plates and the bottom walls of the containing cavities, and the top ends of the movable plates extend out of the sealing cover plate;
the gas distribution box comprises a gas distribution box body and is characterized in that a supporting column is fixedly arranged at the center of the gas distribution box body, a containing cavity is triangular prism-shaped, the containing cavity is arranged into a pentagonal prism shape by taking the supporting column as the center, a sleeve is fixedly arranged on the outer side wall of the supporting column, a gap is formed between the sleeve and the outer side wall of the supporting column, a movable plate is an arc-shaped plate, the movable plate is in clearance fit between the sleeve and the supporting column, and a sealing layer is fixedly arranged on one side of the movable plate facing an exhaust port.
2. The experimental continuous piston type gas distribution device according to claim 1, wherein: the piston assembly comprises a piston rod, the end part of the piston rod extends out of the sealing cover plate, a pressing plate is fixedly arranged on the end part of the piston rod, which is positioned in the accommodating cavity, and sealing rubber is fixedly arranged on the end edge of the pressing plate.
3. The experimental continuous piston type gas distribution device according to claim 2, wherein: the sealing sleeve is in threaded connection with the end portion, located outside the accommodating cavity, of the piston rod, the through hole is located in the piston rod, and a sealing head capable of being inserted into the through hole is fixedly arranged on the inner side wall of the sealing sleeve.
4. The experimental continuous piston type gas distribution device according to claim 3, wherein: the sealing head is internally and fixedly provided with a positioning column, a spiral rubber sleeve is fixedly arranged outside the positioning column, a spiral groove is formed in the inner wall of the through hole, the inner wall surface of the groove is an arc surface, and the groove is matched with the rubber sleeve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110348147.XA CN113049757B (en) | 2021-03-31 | 2021-03-31 | Continuous piston type air distribution device for experiment |
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| CN202110348147.XA CN113049757B (en) | 2021-03-31 | 2021-03-31 | Continuous piston type air distribution device for experiment |
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| CN113049757B true CN113049757B (en) | 2022-10-21 |
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| CN116448532B (en) * | 2023-04-17 | 2024-01-12 | 防灾科技学院 | Piston type automatic fixed gas and liquid distribution device and experimental method thereof |
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