CN215569682U

CN215569682U - High-purity gas sampling storage box

Info

Publication number: CN215569682U
Application number: CN202121184509.8U
Authority: CN
Inventors: 孙芳; 李飞明
Original assignee: Zhejiang Ruiheng Electronic Material Co ltd
Current assignee: Zhejiang Ruiheng Electronic Material Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-01-18
Anticipated expiration: 2031-05-28

Abstract

The utility model provides a high-purity gas sampling storage box, and belongs to the field of seal boxes. The pure gas box comprises a pure gas box, a pure gas cavity is arranged in the pure gas box, the pure gas cavity is communicated with a gas inlet channel and a gas outlet channel, a pushing plate is connected in the pure gas cavity in a sliding mode, a plurality of side faces of the pushing plate are all abutted against the pure gas cavity and separate the pure gas cavity into two mutually independent spaces, the gas inlet channel and the gas outlet channel are respectively located at two ends of the pure gas cavity and located at two sides of the pushing plate, a ventilation switch structure is further arranged on the pushing plate, and the two spaces separated by the pushing plate are communicated when the ventilation switch structure is in an open state. Its advantage lies in can sealing the storage with pure gas in the pure gas case to the in-process that needs made to take out and collect pure gas can guarantee the high purity of pure gas, reduces the entering of impurity.

Description

High-purity gas sampling storage box

Technical Field

The utility model belongs to the field of seal boxes, and particularly relates to a high-purity gas sampling storage box.

Background

Whether in medical experiments or scientific experiments, some experiments require the use of high purity or high hazard gases. In view of this, in order to protect the operator from physical or mental injuries to the person caused by inhalation or contact with such harmful substances during sampling, it is necessary to store such gases in a special storage tank, whether for air or gas, under the requirement of a closed and sealed storage tank.

For example, chinese patent literature discloses a gas storage cylinder [ patent application No.: CN200320129493.6], which comprises: bottle, bottle cap, sealing ring. A first sealing groove is annularly arranged on the inner wall of the bottle mouth of the bottle body, a boss is annularly arranged on the inner side of the top end of the bottle body, and the outer edge of the top end of the bottle mouth is a plane with a certain inclination angle; the outer surface of the bottle cap is annularly provided with a second sealing groove, the upper end of the bottle cap is annularly provided with a concave body matched with the bottle opening, the bottom end of the bottle cap is inwards provided with a cavity, and the top of the bottle cap is externally provided with a concave limiting film for positioning the puncture needle; the sealing ring is annularly arranged between the first sealing groove and the second sealing groove.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a high-purity gas sampling storage box.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a high pure gas sample storage box, includes the pure gas case, the pure gas incasement be equipped with pure gas chamber, pure gas chamber intercommunication have inlet channel and outlet channel, pure gas intracavity sliding connection have crowded push pedal, a plurality of side of crowded push pedal all offset with pure gas chamber and separate pure gas chamber and be two mutually independent spaces, inlet channel and outlet channel be located pure gas chamber's both ends respectively and be located the both sides of crowded push pedal, crowded push pedal on still be equipped with the switch structure of ventilating, the switch structure of ventilating make two when opening the state by crowded push pedal divided space intercommunication.

In foretell high-purity gas sample storage box, still include the pressurize case, the passageway of giving vent to anger set up at the pressurize incasement, pressurize incasement rotation be connected with and support the board, support the board and can extend into in the passageway of giving vent to anger and block up the passageway of giving vent to anger, support the board and rotate through pivot and pressurize case and be connected, just pivot and pressurize case between be connected with the torsional spring.

In the above high purity gas sampling storage box, the gas outlet channel includes a wide channel and a narrow channel, the narrow channel is communicated with the pure gas cavity, the abutting plate is located in the wide channel, and the abutting plate can horizontally abut against the port of the wide channel and close the port of the narrow channel.

In the high-purity gas sampling storage box, the pure gas cavity is also connected with a gas pressure detection meter.

In the above high purity gas sampling storage box, the ventilation switch structure comprises a plurality of pressing plates arranged on the extruding and pushing plate, the pressing plates are abutted against the extruding and pushing plate, each pressing plate is provided with a plurality of through holes arranged on the extruding and pushing plate correspondingly, and the pressing plates can axially reciprocate along the through holes to open or close the through holes.

In the high-purity gas sampling storage box, each pressing plate corresponds to a screw hole penetrating through the extruding plate, a stud is screwed in the screw hole, a plurality of through holes corresponding to the pressing plates are formed in the studs and penetrate through the studs, the pressing plates are located above the studs and are connected with the studs through connecting rods, gaps are formed between the pressing plates and the studs, and the cross sectional area of the pressing plates is larger than that of the screw holes.

In the high-purity gas sampling storage box, the end face of the pressing plate close to the extrusion plate is covered with the sealing ring.

In the high-purity gas sampling storage box, each stud is connected with a switch shaft which is rotatably arranged in the high-purity gas box, the switch shaft is connected with the studs through an extension structure, and the studs can be rotated by the rotation of the switch shaft.

In the high purity gas sampling storage box, the stretching structure comprises a first slide bar arranged in the switch shaft in a sliding mode, a second slide bar is connected in the first slide bar in a sliding mode, a third slide bar is connected in the second slide bar in a sliding mode, the end portion of the third slide bar is connected with the stud, and the cross sections of the first slide bar, the second slide bar and the third slide bar are rectangular or triangular.

In the high-purity gas sampling storage box, a cylinder is arranged in the pure gas box, and an output shaft of the cylinder is connected with the extruding and pushing plate.

Compared with the prior art, the utility model has the advantages that:

1. the utility model can store pure gas in the pure gas box in a sealed way, and can ensure the high purity of the pure gas and reduce the entering of impurities in the process of taking out and collecting the pure gas.

2. In order to prevent the pure gas from escaping from the initial channel and accurately control the volume of the extruded pure gas, the gas outlet channel is connected with the abutting plate, and under the action of the torsion spring, the abutting plate can be pushed only after the pure gas has certain pressure, so that the gas outlet channel is opened to extrude and collect the pure gas, and the pure gas collection amount can be accurately controlled.

Drawings

FIG. 1 is a schematic view of the present invention in its entirety;

FIG. 2 is a schematic top view of a platen;

FIG. 3 is a schematic view of the extended configuration;

fig. 4 is a schematic view of a connection structure of the pressing plate and the pressure maintaining box.

In the figure: the device comprises a pure air box 10, a pure air cavity 11, an air inlet channel 12, an air outlet channel 13, an extrusion plate 14, a ventilation switch structure 15, a pressure maintaining box 16, a pressing plate 17, a rotating shaft 18, a torsion spring 19, a wide channel 20, a narrow channel 21, an air pressure detection meter 22, a pressing plate 23, a through hole 24, a screw hole 25, a stud 26, a connecting rod 27, a sealing ring 28, a switch shaft 29, an extension structure 30, a first slide bar 31, a second slide bar 32, a third slide bar 33 and an air cylinder 34.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-4, a high purity gas sampling storage box comprises a pure gas box 10, a pure gas cavity 11 is arranged in the pure gas box 10, the pure gas cavity 11 is communicated with a gas inlet channel 12 and a gas outlet channel 13, a pushing plate 14 is slidably connected in the pure gas cavity 11, a plurality of side surfaces of the pushing plate 14 are respectively abutted against the pure gas cavity 11 and separate the pure gas cavity 11 into two mutually independent spaces, the gas inlet channel 12 and the gas outlet channel 13 are respectively located at two ends of the pure gas cavity 11 and at two sides of the pushing plate 14, a ventilation switch structure 15 is further arranged on the pushing plate 14, and when the ventilation switch structure 15 is in an open state, the two spaces separated by the pushing plate 14 are communicated.

In this embodiment, the pure air cavity 11 is filled with the specified pure air, the pushing plate 14 is located at the bottom of the pure air cavity 11, i.e. at the inner wall of the pure air cavity 11 away from the air outlet channel 13, and the air vent switch structure 15 is in the closed state. During the process of sampling the pure gas, the valve switch of the gas outlet channel 13 is opened, the pushing plate 14 moves towards the direction close to the gas outlet channel 13, and pushes the pure gas in the pure gas cavity 11 into the gas outlet channel 13 so as to be collected and sampled. When pushing plate 14 moves to pure gas chamber 11 and is close to the inner wall department of air outlet channel 13, pure gas in the pure gas chamber 11 is all extruded, need to supply pure gas into pure gas chamber 11, open air inlet channel 12's valve switch this moment and thus supply pure gas into pure gas chamber 11, because pushing plate 14 is located the upside this moment, pure gas has pressure after supplying into pure gas chamber 11, pushing plate 14 can't move to the initial position, open ventilation switch structure 15 this moment, make pure gas can pass pushing plate 14 and make pushing plate 14 move to the initial position and carry out the sample next time.

Still include the pressurize case 16, outlet channel 13 set up in pressurize case 16, pressurize case 16 internal rotation be connected with and support plate 17, support plate 17 can extend into outlet channel 13 and block outlet channel 13, support plate 17 rotate with pressurize case 16 through pivot 18 and be connected, just pivot 18 and pressurize case 16 between be connected with torsional spring 19.

In this embodiment, in order to prevent the pure gas from escaping from the initial channel 13 and to precisely control the volume of the pure gas to be extruded, the resisting plate 17 is connected to the gas outlet channel 13, and under the action of the torsion spring 19, the resisting plate 17 can be pushed to open the gas outlet channel 13 to extrude and collect the pure gas only when the pure gas has a certain pressure. In the process, under the movement of the pushing plate 14, the pushing plate 14 pushes the pure gas to gradually increase the pressure generated by the pure gas in the pure gas cavity 11, when the threshold value for opening the abutting plate 17 is reached, the abutting plate 17 is pushed, the pure gas is extruded along with the continuous movement of the pushing plate 14, after a certain volume of the pure gas is taken out, the movement of the pushing plate 14 is stopped, at the moment, the pressure generated by the pure gas does not reach the threshold value, and the abutting plate 17 closes the gas outlet channel 13 under the action of the torsion spring 19.

The air outlet channel 13 comprises a wide channel 20 and a narrow channel 21, the narrow channel 21 is communicated with the pure air cavity 11, the abutting plate 17 is positioned in the wide channel 20, and the abutting plate 17 can horizontally abut against the port of the wide channel 20 and close the port of the narrow channel 21.

In this embodiment, the abutting plate 17 is provided with a rubber ring for sealing, and in a state of closing the air outlet channel 13, the abutting plate 17 horizontally abuts against the port of the wide channel 20 and closes the port of the narrow channel 21.

The pure air cavity 11 is also connected with an air pressure detection meter 22.

In this embodiment, the air pressure detecting meter 22 is located on the inner wall of the pure air cavity 11 close to the air outlet channel 13, and can constantly monitor the pressure generated by the pure air in the pure air cavity 11, the pressure threshold value of the pushing abutting plate 17 is also marked on the air pressure detecting meter 22, and the index of the air pressure detecting meter 22 is continuously observed in the process of pushing the pushing plate 14 and extruding the pure air, so that the air pressure is always maintained near the threshold value, and the phenomenon that the pure air is extruded too much due to the excessive amplitude of the pushing bottom plate 17 caused by the excessive pressure is prevented.

The ventilation switch structure 15 comprises a plurality of pressing plates 23 arranged on the extrusion plate 14, the pressing plates 23 are abutted against the extrusion plate 14, each pressing plate 23 is correspondingly provided with a plurality of through holes 24 arranged on the extrusion plate 14, and the pressing plates 23 can axially reciprocate along the through holes 24 to open or close the through holes 24.

In the present embodiment, when the air-vent switch structure 15 is in the closed state, the pressing plate 23 presses on the through hole 24 and closes the through hole 24, so that the pure air chamber 11 is divided into two independent spaces by the pushing plate 14. When the air-vent switch structure 15 is in the open state, the pressure plate 23 is axially moved away from the through hole 24 along the through hole 24, thereby communicating the two spaces partitioned by the thrust plate 14.

Each pressing plate 23 is correspondingly provided with a screw hole 25 penetrating through the extrusion plate 14, a stud 26 is screwed in the screw hole 25, a plurality of through holes 24 corresponding to the pressing plates 23 are arranged in the studs 26 and penetrate through the studs 26, the pressing plates 23 are positioned above the studs 26, the pressing plates 23 are connected with the studs 26 through connecting rods 27, gaps are reserved between the pressing plates 23 and the studs 26, and the cross sectional area of the pressing plates 23 is larger than that of the screw holes 25.

In the present embodiment, when the air vent switch structure 15 is in the closed state, the stud 26 is rotated, and the stud 26 carries the pressing plate 23 to move toward the through hole 24 by screwing the stud 26 to the screw hole 25, so that the pressing plate 23 presses on the through hole 24 and closes the through hole 24. When the ventilation switch structure 15 is in the open state, the stud 26 is rotated in the opposite direction, so that the stud 26 carries the pressing plate 23 to move away from the through hole 24, and the through hole 24 is opened, so that the two spaces separated by the pushing plate 14 are communicated.

The end surface of the pressing plate 23 close to the extruding plate 14 is covered with a sealing ring 28. In the present embodiment, the sealing property is increased.

Each stud 26 is connected with a switch shaft 29 which is rotatably arranged in the pure air box 10, the switch shaft 29 is connected with the studs 26 through an extension structure 30, and the studs 26 can be rotated by the rotation of the switch shaft 29.

In the present embodiment, during the process of opening the through hole 24 or closing the through hole 24, the switch shaft 29 is rotated manually or by motor operation, so that the stud 26 is rotated, and since the pushing plate 14 moves in the pure air chamber 11 and moves away from or close to the switch shaft 29, the distance change between the switch shaft 29 and the pushing plate 14 is overcome by the extending structure 30 and the switch shaft 29 is not prevented from rotating with the stud 26.

The stretching structure 30 comprises a first slide bar 31 arranged in the switch shaft 29 in a sliding manner, a second slide bar 32 is connected in the first slide bar 31 in a sliding manner, a third slide bar 33 is connected in the second slide bar 32 in a sliding manner, the end part of the third slide bar 33 is connected with the stud 26, and the cross sections of the first slide bar 31, the second slide bar 32 and the third slide bar 33 are all rectangular or triangular.

In the present embodiment, since the cross sections of the first sliding rod 31, the second sliding rod 32 and the third sliding rod 33 are all rectangular or triangular, the rotation of the switch shaft 29 will rotate along with the first sliding rod 31, the second sliding rod 32 and the third sliding rod 33, so as to drive the stud 26 to rotate. In addition, stop blocks are arranged in the first sliding rod 31 and the second sliding rod 32, and are used for respectively preventing the second sliding rod 32 from sliding out of the first sliding rod 31 and preventing the third sliding rod 33 from sliding out of the second sliding rod 32.

An air cylinder 34 is arranged in the pure air box 10, and an output shaft of the air cylinder 34 is connected with the extruding plate 14.

In the embodiment, in the process of extruding the pure gas, the air cylinder 34 operates to move the extrusion plate 14, so that the moving speed of the extrusion plate 14 can be stably controlled, the pressure generated by extruding the pure gas is always positioned near the extrusion threshold value, and the pure gas is slowly extruded.

The utility model discloses a theory of operation does:

the pure air chamber 11 is filled with the designated pure air, and the extrusion plate 14 is located at the bottom of the pure air chamber 11, i.e. at the inner wall of the pure air chamber 11 away from the air outlet channel 13, so that the pressing plate 23 presses on the through hole 24 and seals the through hole 24. In the process of extruding and collecting the pure gas, the air cylinder 34 works to slowly push the extruding plate 14, so that the pure gas is gradually extruded and the generated pressure is gradually increased, and when the generated pressure is the pressure threshold value for pushing the abutting plate 17, the abutting plate 17 is pushed to rotate and overcomes the rebounding force of the torsion spring 19, so that the pure gas is gradually extruded.

When the pushing plate 14 moves to the inner wall of the pure air cavity 11 close to the air outlet channel 13, pure air in the pure air cavity 11 is all pushed out, the pure air needs to be supplemented into the pure air cavity 11, at this time, a valve switch of the air inlet channel 12 is opened so as to supplement the pure air into the pure air cavity 11, because the pushing plate 14 is located at the upper side at this time, pressure exists after the pure air is supplemented into the pure air cavity 11, the pushing plate 14 cannot move to the initial position, at this time, the switch shaft 29 is rotated so as to enable the stud 26 to rotate, the stud 26 drives the pressing plate 23 to move towards the direction far away from the through hole 24, so that the through hole 24 is opened so as to enable the two spaces separated by the pushing plate 14 to be communicated, then the pushing plate 14 is moved to the initial position under the action of the air cylinder 34, and then the stud 26 is rotated so as to enable the pressing plate 23 to press on the through hole 24 and seal the through hole 24.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the pure air tank 10, the pure air chamber 11, the air inlet passage 12, the air outlet passage 13, the extruding plate 14, the air vent switch structure 15, the pressure maintaining tank 16, the abutting plate 17, the rotating shaft 18, the torsion spring 19, the wide passage 20, the narrow passage 21, the air pressure detecting gauge 22, the pressing plate 23, the through hole 24, the screw hole 25, the stud 26, the connecting rod 27, the sealing ring 28, the switch shaft 29, the extension structure 30, the first sliding rod 31, the second sliding rod 32, the third sliding rod 33, the air cylinder 34, etc., are more used herein, these terms are merely used for more convenient description and explanation of the essence of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The high-purity gas sampling storage box comprises a pure gas box (10), wherein a pure gas cavity (11) is arranged in the pure gas box (10), the pure gas cavity (11) is communicated with an air inlet channel (12) and an air outlet channel (13), and the high-purity gas sampling storage box is characterized in that a squeezing plate (14) is connected in the pure gas cavity (11) in a sliding mode, a plurality of side faces of the squeezing plate (14) are abutted against the pure gas cavity (11) and divide the pure gas cavity (11) into two mutually independent spaces, the air inlet channel (12) and the air outlet channel (13) are respectively located at two ends of the pure gas cavity (11) and located at two sides of the squeezing plate (14), a ventilation switch structure (15) is further arranged on the squeezing plate (14), and the two spaces divided by the squeezing plate (14) are communicated when the ventilation switch structure (15) is in an opening state.

2. The high-purity gas sampling storage box according to claim 1, further comprising a pressure holding box (16), wherein the gas outlet channel (13) is arranged in the pressure holding box (16), a resisting plate (17) is rotatably connected to the pressure holding box (16), the resisting plate (17) can extend into the gas outlet channel (13) and block the gas outlet channel (13), the resisting plate (17) is rotatably connected with the pressure holding box (16) through a rotating shaft (18), and a torsion spring (19) is connected between the rotating shaft (18) and the pressure holding box (16).

3. A high purity gas sampling storage box according to claim 2, wherein the outlet passage (13) comprises a wide passage (20) and a narrow passage (21), the narrow passage (21) is communicated with the pure gas chamber (11), the resisting plate (17) is positioned in the wide passage (20), and the resisting plate (17) can horizontally resist the outlet of the wide passage (20) and close the port of the narrow passage (21).

4. A storage tank for high purity gas as claimed in claim 3 wherein the pure gas chamber (11) is further connected to a pressure gauge (22).

5. A storage box for high purity gas sampling according to claim 1, wherein the air vent switch structure (15) comprises a plurality of pressing plates (23) disposed on the extruding plate (14), the pressing plates (23) abut against the extruding plate (14), each pressing plate (23) has a plurality of through holes (24) disposed on the extruding plate (14), and the pressing plates (23) can axially reciprocate along the through holes (24) to open or close the through holes (24).

6. The high-purity gas sampling storage box according to claim 5, wherein each pressure plate (23) is provided with a screw hole (25) penetrating through the extrusion plate (14), a stud (26) is screwed in the screw hole (25), a plurality of through holes (24) corresponding to the pressure plate (23) are formed in the studs (26) and penetrate through the studs (26), the pressure plate (23) is positioned above the studs (26), the pressure plate (23) is connected with the studs (26) through a connecting rod (27), a gap is formed between the pressure plate (23) and the studs (26), and the cross-sectional area of the pressure plate (23) is larger than that of the screw hole (25).

7. A high purity gas sampling storage box according to claim 6, wherein the end surface of the pressure plate (23) close to the extrusion plate (14) is covered with a sealing ring (28).

8. A storage tank for sampling high purity gas according to claim 7, wherein each stud (26) is connected to a switch shaft (29) rotatably disposed in the tank (10), the switch shaft (29) and the stud (26) are connected by an extension structure (30), and rotation of the switch shaft (29) rotates the stud (26).

9. A storage box for high purity gas samples according to claim 8, wherein the extension structure (30) comprises a first slide bar (31) slidably disposed in the switch shaft (29), a second slide bar (32) is slidably connected to the first slide bar (31), a third slide bar (33) is slidably connected to the second slide bar (32), an end of the third slide bar (33) is connected to the stud (26), and the first slide bar (31), the second slide bar (32) and the third slide bar (33) have a rectangular or triangular cross section.

10. A storage tank for high purity gas samples as claimed in claim 9 wherein the pure gas tank (10) is provided with a cylinder (34), the output shaft of the cylinder (34) is connected with the push plate (14).