Laboratory gas collecting and metering device

Abstract

The utility model discloses a laboratory gas collecting and metering device, which relates to the technical field of laboratory metering and comprises a lower valve gas inlet pipe and a collecting and metering tank body, the lower valve gas inlet pipe is mounted and connected to the middle position of the lower end of the collecting and metering tank body, and an observation window with scales is arranged on the inner side of the front end of the collecting and metering tank body. An upper valve air outlet pipe is arranged at the upper end of the collecting and metering tank body, a placement supporting seat is arranged on the peripheral side of the collecting and metering tank body, a carrying handle is arranged at the upper end of the placement supporting seat, and the lower valve air inlet pipe, the collecting and metering tank body and the upper valve air outlet pipe are electrically connected with an external controller through connecting wires. According to the collecting and metering tank, the change of the liquid level of a medium can be inducted in an infrared manner through the infrared sensor, so that the metering of gas collection can be obtained through corresponding calculation, the liquid level is raised through gas expansion, and the collecting and metering requirements of different laboratory gases can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory metrology, in particular to a laboratory gas collection and metering device. Background Art

[0002] A measuring instrument is a measuring device that converts the measured value into a directly observable indication or equivalent information. The implementation of laboratory metrology not only involves the standardization of measuring tools and methods, but also includes ensuring the accuracy and reliability of measurement results to ensure the comparability and consistency of measurement data. When collecting and measuring the gas generated in the laboratory, a laboratory gas collection and metering device is required.

[0003] The existing Chinese patent CN201135892Y discloses a laboratory gas collection and metering device on October 22, 2008. It includes a graduated gas collection and metering cylinder, a spherical water storage tank, a bent pipe, and a base. The lower end of the graduated gas collection and metering cylinder is connected to one end of the spherical water storage tank through the bent pipe. A base is provided below the bent pipe. The other end of the spherical water storage tank is open and communicates with the atmosphere.

[0004] However, when the above laboratory gas collection and metering device is used for gas collection and metering, the whole can only collect and meter gases that are insoluble in water, so the scope of use is relatively narrow, and it cannot effectively collect and meter experimental gases that are soluble in water. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a laboratory gas collection and metering device is proposed. The collection and metering tank body can infrared sense the change of the liquid level of the medium through an infrared sensor, and then the metering of gas collection can be obtained through corresponding calculations. The liquid level is lifted due to gas expansion, so that the collection and metering needs of different laboratory gases can be met.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A laboratory gas collection and metering device includes a lower valve inlet pipe and a collection and metering tank body. The lower valve inlet pipe is installed and connected to the middle position at the lower end of the collection and metering tank body. A graduated observation window is arranged on the inner side of the front end of the collection and metering tank body. An upper valve outlet pipe is arranged at the upper end of the collection and metering tank body. A placement support seat is arranged on the peripheral side of the collection and metering tank body. A carrying handle is arranged at the upper end of the placement support seat. The lower valve inlet pipe, the collection and metering tank body, and the upper valve outlet pipe are electrically connected to an external controller through connecting wires;

[0008] The collection and measurement tank body includes an infrared sensor, a measured liquid medium, a tank body shell, a measurement pipe body, and an expansion soft cloth. A measurement pipe body is arranged in the middle inside the tank body shell. The tank body shell contains a measured liquid medium. An expansion soft cloth is arranged at the opening of the outer wall of the measurement pipe body. An infrared sensor is arranged at the upper end of the tank body shell. The upper end of the measurement pipe body is connected to the upper valve outlet pipe, and the lower end of the measurement pipe body is connected to the lower valve inlet pipe.

[0009] Through the above technical solutions: The collection and measurement tank body can be supported and placed by placing a support base. The lower valve inlet pipe can receive the gas generated by laboratory experimental equipment and then transport it into the collection and measurement tank body. A scale observation window is fixedly installed on the inner side of the front end of the collection and measurement tank body. Through the scale observation window, the rising height of the medium caused by the expansion inside the collection and measurement tank body can be observed. Moreover, the collection and measurement tank body can infrared sense the change of the medium liquid level through the infrared sensor, and thus the measurement of gas collection can be obtained through corresponding calculations. The measured laboratory gas can be discharged to an external container for collection and treatment through the upper valve outlet pipe.

[0010] The present utility model is further configured such that the scale observation window includes an observation window plate and a measurement scale. The measurement scale is arranged on the front surface of the observation window plate, and the observation window plate is connected to the collection and measurement tank body.

[0011] Through the above technical solutions: Due to the structure of the scale observation window, it is convenient to view the change of the liquid level.

[0012] The present utility model is further configured such that the placement support base includes a locking bolt, a concave sleeve, an assembly sleeve cavity, an internal rubber pad, and an L-shaped support. A concave sleeve is arranged inside the upper end of the L-shaped support. An assembly sleeve cavity is arranged inside the concave sleeve. An internal rubber pad is arranged on the inner wall of the assembly sleeve cavity inside the concave sleeve. Locking bolts are arranged on the inner sides of both ends of the concave sleeve and the internal rubber pad, and the concave sleeve is connected to the tank body shell through the locking bolt.

[0013] Through the above technical solutions: Due to the structure of the placement support base, it can be placed and supported for use.

[0014] The present utility model is further configured such that the upper valve outlet pipe includes an upper solenoid valve, a connecting flange, and a right-angle elbow pipe. A right-angle elbow pipe is arranged at the upper end of the upper solenoid valve. A connecting flange is arranged at the outer end of the right-angle elbow pipe. The connecting flange is connected to an external gas collection container, and the upper solenoid valve is connected to the measurement pipe body.

[0015] Through the above technical solutions: Due to the structure of the upper valve outlet pipe, it can exhaust and collect gas.

[0016] The present utility model is further configured such that the carrying handle includes a U-shaped handle rod, a connecting end plate, and assembly screws. Assembly screws are provided at the four corners of the connecting end plate. The outer end of the connecting end plate is provided with a U-shaped handle rod, and the connecting end plate is connected to the placement support base through the assembly screws.

[0017] Through the above technical solutions: Due to the structure of the carrying handle, it is convenient to hold and carry.

[0018] The present utility model is further configured such that an effective rubber pad is placed at the connection between the carrying handle and the placement support base, and the connections are aligned.

[0019] Through the above technical solutions: Since an effective rubber pad is placed at the connection between the carrying handle and the placement support base and the connections are aligned, it is more tightly and firmly fixed during fixation, and the connections are aligned, so there will be no obstruction during use.

[0020] The present utility model is further configured such that the expansion soft cloth is located at the middle position inside the metering liquid medium.

[0021] Through the above technical solutions: Since the expansion soft cloth is located at the middle position inside the metering liquid medium, the expansion soft cloth effectively squeezes the metering liquid medium during expansion for lifting.

[0022] The beneficial effects of the present utility model are as follows:

[0023] 1. By providing a collection and metering tank structure, gas collection can be correspondingly metered. A metering pipe body is fixedly connected in the middle inside the tank shell of the collection and metering tank. The upper end of the metering pipe body is connected to the upper valve outlet pipe, and the lower end of the metering pipe body is connected to the lower valve inlet pipe. Thus, when the lower valve inlet pipe is opened and the upper valve outlet pipe is closed, the laboratory gas transported by the lower valve inlet pipe will be stored in the metering pipe body. The inside of the tank shell contains a metering liquid medium. An expansion soft cloth is fixedly connected at the opening of the outer wall of the metering pipe body. Thus, the gas will cause the expansion soft cloth to expand outwards, and then the expansion soft cloth can expand and lift the liquid level of the metering liquid medium. An infrared sensor is fixedly connected to the upper end of the tank shell. Through the infrared sensor, the change in the liquid level of the medium can be sensed by infrared. Thus, through corresponding calculations, the metering of gas collection can be obtained. By causing the liquid level to rise due to gas expansion, the collection and metering requirements of different laboratory gases can be satisfied.

[0024] 2. By providing a scale observation window structure, it is convenient for personnel to visually check the height difference data of the liquid level change. The observation window plate of the scale observation window is fixedly connected to the collection and metering tank, and a metering scale is engraved on the front surface of the observation window plate. Thus, the height change of the liquid level in the collection and metering tank can be viewed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic three-dimensional structure diagram of a laboratory gas collection and measurement device proposed by the present utility model;

[0026] Figure 2 Schematic three-dimensional structure diagram of the collection and measurement part of a laboratory gas collection and measurement device proposed by the present utility model;

[0027] Figure 3 Schematic three-dimensional structure diagram of the placement and fixing part of a laboratory gas collection and measurement device proposed by the present utility model;

[0028] Figure 4 Schematic structure diagram of the carrying handle of a laboratory gas collection and measurement device proposed by the present utility model;

[0029] Figure 5 Schematic structure diagram of the collection and measurement tank body of a laboratory gas collection and measurement device proposed by the present utility model.

[0030] In the figure: 1. Carrying handle; 11. U-shaped handle rod; 12. Connecting end plate; 13. Assembly screw; 2. Placement support seat; 21. Locking bolt; 22. Concave sleeve housing; 23. Assembly sleeve cavity; 24. Inner rubber pad; 25. L-shaped support; 3. Lower valve inlet pipe; 4. Collection and measurement tank body; 41. Infrared sensor; 42. Measurement liquid medium; 43. Tank body shell; 44. Measurement pipe body; 45. Expansion soft cloth; 5. Observation window with scale; 51. Observation window plate; 52. Measurement scale; 6. Upper valve outlet pipe; 61. Upper solenoid valve; 62. Connecting flange; 63. Right-angle elbow. Detailed implementation manners

[0031] The technical solutions of this patent will be further described in detail below in conjunction with the specific implementation manners.

[0032] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation to this patent.

[0033] In the description of this patent, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this patent.

[0034] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "linkage", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0035] Referring to Figures 1 - 5 , a laboratory gas collection and metering device includes a lower valve inlet pipe 3 and a collection and metering tank body 4. The lower valve inlet pipe 3 is installed and connected to the middle position at the lower end of the collection and metering tank body 4, so that the lower valve inlet pipe 3 can receive the gas generated by laboratory experimental equipment and then transport it into the collection and metering tank body 4. An inner front end of the collection and metering tank body 4 is fixedly installed with a graduated observation window 5, through which the lifting height of the medium caused by the expansion inside the collection and metering tank body 4 can be observed. An upper valve outlet pipe 6 is installed at the upper end of the collection and metering tank body 4, through which the metered laboratory gas can be discharged into an external container for collection and treatment. A placement support base 2 is installed on the periphery of the collection and metering tank body 4, so that it can be supported and placed. A carrying handle 1 is fixedly connected to the upper end of the placement support base 2, which is convenient for personnel to hold and carry. The lower valve inlet pipe 3, the collection and metering tank body 4, and the upper valve outlet pipe 6 are electrically connected to an external controller through connecting wires, and corresponding operations can be controlled through the external controller;

[0036] The collection and metering tank body 4 includes an infrared sensor 41, a metering liquid medium 42, a tank body shell 43, a metering pipe body 44, and an expansion soft cloth 45. A metering pipe body 44 is fixedly connected to the middle inside the tank body shell 43. The upper end of the metering pipe body 44 is connected to the upper valve outlet pipe 6, and the lower end of the metering pipe body 44 is connected to the lower valve inlet pipe 3. Thus, when the lower valve inlet pipe 3 is opened and the upper valve outlet pipe 6 is closed, the laboratory gas transported by the lower valve inlet pipe 3 will be stored in the metering pipe body 44. The tank body shell 43 contains a metering liquid medium 42. An expansion soft cloth 45 is fixedly connected to the opening on the outer wall of the metering pipe body 44, so that the gas will cause the expansion soft cloth 45 to expand outward, and then the expansion soft cloth 45 can expand and lift the liquid level of the metering liquid medium 42. An infrared sensor 41 is fixedly connected to the upper end of the tank body shell 43. Through the infrared sensor 41, the change in the liquid level of the medium can be sensed by infrared, and thus the metering of the gas collection can be obtained through corresponding calculations. By causing the liquid level to rise due to gas expansion, the collection and metering requirements of different laboratory gases can be met;

[0037] The expansion soft cloth 45 is located at the middle position inside the metering liquid medium 42, so that the expansion soft cloth 45 effectively squeezes the metering liquid medium 42 to lift it during expansion.

[0038] Specifically, the graduated observation window 5 includes an observation window plate 51 and a measurement scale 52. The observation window plate 51 is fixedly connected to the collection and measurement tank body 4, and the measurement scale 52 is engraved on the front surface of the observation window plate 51, so that the height change of the liquid level in the collection and measurement tank body 4 can be viewed.

[0039] Specifically, the placement support base 2 includes a locking bolt 21, a concave sleeve 22, an assembly sleeve cavity 23, an internal rubber pad 24, and an L-shaped support 25. The concave sleeve 22 is fixedly connected to the inner side of the upper end of the L-shaped support 25, and the assembly sleeve cavity 23 is provided inside the concave sleeve 22, so that the tank body outer shell 43 can be correspondingly sleeved and placed. After placement, since the concave sleeve 22 is connected to the tank body outer shell 43 through the locking bolt 21, it can be effectively locked and fixed. The internal rubber pad 24 is adhered to the inner wall of the concave sleeve 22 inside the assembly sleeve cavity 23, so as to increase the friction force and prevent sliding and falling. The locking bolts 21 are installed on the inner sides of both ends of the concave sleeve 22 and the internal rubber pad 24, which can also drive the internal rubber pad 24 to be correspondingly installed.

[0040] Specifically, the upper valve outlet pipe 6 includes an upper solenoid valve 61, a connecting flange 62, and a right-angle elbow 63. The upper solenoid valve 61 is fixedly connected to the metering pipe body 44, and the right-angle elbow 63 is fixedly connected to the upper end of the upper solenoid valve 61. Thus, when the upper solenoid valve 61 is opened, the gas inside the metering pipe body 44 can be transported into the right-angle elbow 63. The connecting flange 62 is fixedly connected to the outer end of the right-angle elbow 63, and the connecting flange 62 is connected to an external gas collection container, so that it can be transported to the external gas collection container for collection and treatment.

[0041] Specifically, the carrying handle 1 includes a U-shaped handle rod 11, a connecting end plate 12, and assembly screws 13. The assembly screws 13 are installed at the four corners of the connecting end plate 12, and the connecting end plate 12 is connected to the placement support base 2 through the assembly screws 13, so that it can be correspondingly installed and fixed. The U-shaped handle rod 11 is fixedly connected to the outer end of the connecting end plate 12, so that personnel can hold the U-shaped handle rod 11 for carrying and use.

[0042] Specifically, an effective rubber pad is placed at the connection between the carrying handle 1 and the placement support base 2, and the connections are aligned, so that the fixation is more tight and firm, and the connections are aligned, so that there will be no obstruction during use.

[0043] Working principle: During use, the collection and measurement tank body 4 can be supported and placed by placing the support base 2. The lower valve intake pipe 3 can receive the gas generated by laboratory experimental equipment and then transport it to the inside of the collection and measurement tank body 4. A scale observation window 5 is fixedly installed on the inner side of the front end of the collection and measurement tank body 4. Through the scale observation window 5, the lifting height of the medium caused by the expansion inside the collection and measurement tank body 4 can be observed. Moreover, the collection and measurement tank body 4 can infrared sense the change of the medium liquid level through the infrared sensor 41, and thus the measurement of the gas collection can be obtained through corresponding calculations. The metered laboratory gas can be discharged to an external container for collection and treatment through the upper valve outlet pipe 6.

[0044] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A laboratory gas collection and metering device, comprising a lower valve air inlet pipe (3) and a collection and metering tank body (4), wherein the lower valve air inlet pipe (3) is installed and connected to the middle position of the lower end of the collection and metering tank body (4), characterized in that: The inner side of the front end of the collecting and metering tank body (4) is provided with a graduated observation window (5), the upper end of the collecting and metering tank body (4) is provided with an upper valve air outlet pipe (6), the peripheral side of the collecting and metering tank body (4) is provided with a placement support seat (2), the upper end of the placement support seat (2) is provided with a carrying handle (1), and the lower valve air inlet pipe (3), the collecting and metering tank body (4) and the upper valve air outlet pipe (6) are electrically connected to an external controller via a connecting line; The collecting and metering tank (4) comprises an infrared sensor (41), a metering liquid medium (42), a tank shell (43), a metering tube (44) and an expansion soft cloth (45); the metering tube (44) is arranged in the middle of the tank shell (43); the metering liquid medium (42) is contained in the tank shell (43); the expansion soft cloth (45) is arranged at the opening of the outer wall of the metering tube (44); the infrared sensor (41) is arranged at the upper end of the tank shell (43); the upper end of the metering tube (44) is connected to the upper valve outlet pipe (6); and the lower end of the metering tube (44) is connected to the lower valve inlet pipe (3).

2. A laboratory gas collection and metering device according to claim 1, characterized in that: The scaled observation window (5) comprises an observation window plate (51) and a metering scale (52); the front end surface of the observation window plate (51) is provided with a metering scale (52); and the observation window plate (51) is connected to a collecting and metering tank body (4).

3. A laboratory gas collection and metering device according to claim 1, characterized in that: The placement support seat (2) comprises a locking bolt (21), a concave shell (22), an assembly shell cavity (23), an internal rubber pad (24) and an L-shaped support (25); the inner side of the upper end of the L-shaped support (25) is provided with a concave shell (22); the inner side of the concave shell (22) is provided with an assembly shell cavity (23); the inner side of the assembly shell cavity (23) is provided with an internal rubber pad (24) on the inner wall of the concave shell (22); locking bolts (21) are provided on the inner sides of both ends of the concave shell (22) and the internal rubber pad (24); the concave shell (22) is connected to the outer shell of the tank body (43) through the locking bolts (21).

4. A laboratory gas collection and metering device according to claim 1, characterized in that: The upper valve outlet pipe (6) comprises an upper solenoid valve (61), a connecting flange (62) and a right-angle elbow (63); the upper end of the upper solenoid valve (61) is provided with a right-angle elbow (63); the outer end of the right-angle elbow (63) is provided with a connecting flange (62); the connecting flange (62) is connected to an external gas collection container; and the upper solenoid valve (61) is connected to a metering tube body (44).

5. A laboratory gas collection and metering device according to claim 1, characterized in that: The carrying handle (1) comprises a U-shaped handlebar (11), a connecting end plate (12) and an assembly screw (13); the four corners of the connecting end plate (12) are provided with an assembly screw (13); the outer end of the connecting end plate (12) is provided with a U-shaped handlebar (11); and the connecting end plate (12) is connected to a placement support seat (2) via the assembly screw (13).

6. A laboratory gas collection and metering device according to claim 1, characterized in that: An effective rubber pad is placed at the connection between the carrying handle (1) and the placement support seat (2), and the connection is aligned.

7. A laboratory gas collection and metering device according to claim 1, characterized in that: The expansion soft cloth (45) is located at the inner middle position of the metering liquid medium (42).

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