Gas circuit constant temperature system of specific surface area and aperture analyzer

Abstract

The utility model discloses a gas circuit constant temperature system of a specific surface area and aperture analyzer, which relates to the technical field of physical adsorption instrument equipment and comprises a box body, a direct current brushless fan is fixedly connected to the inner side wall of the box body, an air storage box is fixedly connected to the output end of the direct current brushless fan, and two connecting hoses are fixedly connected to the side wall of the air storage box. The side wall of the box body is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a driving plate, the two ends of the driving plate are fixedly connected with racks, the racks are in meshed connection with large gears, and the inner wall of the box body is movably connected with a rotating rod. According to the utility model, hot air is uniformly output into the box body by using the two connecting pipes and the uniformly distributed air outlets, so that the problem of non-uniform temperature distribution caused by over-concentration of the air outlets is solved, experimental errors caused by temperature differences are reduced, and the measurement precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of physical adsorption instrument equipment, in particular to a gas path constant temperature system of a specific surface area and pore size analyzer. Background Art

[0002] For physical adsorption instruments, especially specific surface area and pore size analyzers, it is necessary to calculate the gas adsorption and desorption performance data based on the ideal gas equation. Therefore, it is necessary to ensure that the temperature of all gas-related systems remains constant. Currently, such instruments only consider the heat generation effect of their own components, and most of them ignore the influence of the operating environment and the temperature change of the test gas source. There are certain defects, which cause errors in the reproducibility test process.

[0003] Chinese patent document CN215318962U discloses a gas path constant temperature system for a specific surface area and pore size analyzer, comprising a first shell, a second shell fixedly connected to the left side of the front end of the first shell, a third shell provided on the right side of the second shell, the third shell fixedly connected to the middle position of the first shell, the rear end of the third shell being an open structure, and a second opening provided in the middle position of the front end of the first shell. The above-mentioned gas path constant temperature system for a specific surface area and pore size analyzer has shortcomings. Although the device can control the internal temperature of the instrument, it has limitations. The air outlet of the device is too concentrated, which can easily cause uneven temperature distribution in the shell when adjusting the temperature inside the shell, which can easily lead to deviations in the measurement results and reduce the accuracy of the data.

[0004] Therefore, in order to solve such problems, we proposed a gas path constant temperature system for specific surface area and pore size analyzer. Utility Model Content

[0005] The purpose of the present utility model is to provide an air path constant temperature system for a specific surface area and pore size analyzer, aiming to solve the problem in the above-mentioned background technology that the existing air path constant temperature system for a specific surface area and pore size analyzer is too concentrated in the air outlet during use, which easily causes uneven temperature distribution in the shell when adjusting the temperature in the shell, thereby causing deviation in the measurement results.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gas path constant temperature system of a specific surface area and pore size analyzer, comprising a box body, a third installation slot is provided on the side wall of the box body, an electric heating network is installed inside the box body, the electric heating network is located in the third installation slot, a DC brushless fan is fixedly connected to the inner wall of the box body, the output end of the DC brushless fan is fixedly connected to an air storage box, two connecting hoses are fixedly connected to the side wall of the air storage box, one end of the connecting hose away from the air storage box is fixedly connected to a connecting pipe, air outlets are evenly provided on the side wall of the connecting pipe, an electric push rod is fixedly connected to the side wall of the box body, the output end of the electric push rod is fixedly connected to a drive plate, both ends of the drive plate are fixedly connected to a rack, the rack is meshed with a large gear, the inner wall of the box body is movably connected to a rotating rod, the side wall of the rotating rod is fixedly connected to a small gear, the small gear is meshed with the large gear, and the connecting pipe is fixedly connected to the rotating rod through a pipe nail.

[0007] Preferably, the side wall of the box body is fixedly connected to a mounting frame, the inner wall of the mounting frame is provided with a first mounting groove, the side wall of the mounting frame is provided with a second mounting groove, the first mounting groove and the second mounting groove are communicated with each other, a filter plate is movably connected inside the mounting frame, the filter plate is located in the first mounting groove, and the side wall of the mounting frame is fixedly connected to a splint by bolts, and the splint is located in the second mounting groove.

[0008] Preferably, a sliding groove is provided on the side wall of the box body, and a limiting block is fixedly connected to the side wall of the rack. The limiting block is located in the sliding groove, and the limiting block and the inner wall of the sliding groove are slidably connected.

[0009] Preferably, the driving plate is Z-shaped.

[0010] Preferably, the height of the filter plate is greater than the distance between the inner bottom wall and the inner top wall of the mounting frame.

[0011] Preferably, a distance is left between the side wall of the rotating rod and the inner wall of the box body.

[0012] The utility model has the following beneficial effects:

[0013] In the utility model, two connecting pipes and evenly distributed air outlets are used to evenly output hot air to the inside of the box, which solves the problem of uneven temperature distribution caused by excessive concentration of air outlets. Then, an electric push rod is used to drive the driving plate to move linearly, and the driving plate drives the two rotating rods to rotate, and the rotation directions are opposite to each other, thereby realizing the position adjustment of the output direction of the air outlet to achieve a better temperature distribution effect. The structure is simple and easy to operate, which reduces the experimental error caused by temperature difference and improves the measurement accuracy and data reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional schematic diagram of a gas path constant temperature system of a specific surface area and pore size analyzer proposed in the present invention;

[0015] Figure 2 This is a three-dimensional schematic diagram of the internal structure of the gas path constant temperature system of the specific surface area and pore size analyzer proposed by the present invention;

[0016] Figure 3 This is a three-dimensional exploded schematic diagram of a mounting frame in a gas path constant temperature system of a specific surface area and pore size analyzer proposed in the present invention;

[0017] Figure 4 This is a three-dimensional exploded schematic diagram of the internal structure of the third mounting slot in the gas path constant temperature system of the specific surface area and pore size analyzer proposed by the present invention;

[0018] Figure 5 The utility model provides an exploded three-dimensional schematic diagram of the internal structure of the gas path constant temperature system of the specific surface area and pore size analyzer.

[0019] Legend:

[0020] 1. Box body; 101. Third mounting slot; 102. Slide; 11. Electric heating grid; 12. DC brushless fan; 13. Air storage box; 131. Connecting hose; 132. Connecting pipe; 133. Air outlet; 14. Electric push rod; 15. Drive plate; 16. Rack; 161. Limit block; 17. Large gear; 18. Rotating rod; 19. Small gear; 2. Mounting frame; 21. First mounting slot; 22. Second mounting slot; 23. Filter plate; 24. Clamp. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," "outside," etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are used only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific position, be constructed and operate in a specific position. Therefore, they should not be understood as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected. They can be mechanically connected or electrically connected. They can be directly connected, indirectly connected through an intermediate medium, or can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] Reference Figure 1-5 The utility model provides an embodiment: a gas path constant temperature system for a specific surface area and pore size analyzer, comprising a box body 1, a third mounting slot 101 being provided on the side wall of the box body 1, an electric heating network 11 being installed inside the box body 1, the electric heating network 11 being located in the third mounting slot 101, a DC brushless fan 12 being fixedly connected to the inner side wall of the box body 1, an air storage box 13 being fixedly connected to the output end of the DC brushless fan 12, two connecting hoses 131 being fixedly connected to the side wall of the air storage box 13, one end of the connecting hose 131 being fixedly connected to the air storage box 13 A connecting pipe 132 is fixedly connected, and air outlets 133 are evenly opened on the side walls of the connecting pipe 132. An electric push rod 14 is fixedly connected to the side wall of the box body 1, and the output end of the electric push rod 14 is fixedly connected to a driving plate 15. Both ends of the driving plate 15 are fixedly connected to a rack 16, and the rack 16 is meshed with a large gear 17. A rotating rod 18 is movably connected to the inner wall of the box body 1, and a small gear 19 is fixedly connected to the side wall of the rotating rod 18. The small gear 19 is meshed with the large gear 17, and the connecting pipe 132 is fixedly connected to the rotating rod 18 through a pipe nail.

[0024] This setting starts the electric heating network 11 and the DC brushless fan 12, so that the DC brushless fan 12 outputs the heat output by the electric heating network 11 into the air storage box 13 through wind, and then uses the connecting hose 131 to transport it to the connecting pipe 132, and then output it from the air outlet 133, thereby adjusting the internal temperature of the box body 1. Secondly, the electric push rod 14 is started, so that the electric push rod 14 drives the driving plate 15 to move linearly, so that the driving plate 15 drives the two racks 16 to move linearly, so that the racks 16 respectively drive the large gear 17 to rotate, and the two large gears 17 rotate in opposite directions, and the large gear 17 drives the small gear 19 to rotate, so that the small gear 19 drives the rotating rod 18 to rotate, so that the rotating rod 18 drives the connecting pipe 132 to rotate, thereby realizing the adjustment of the output angle of the air outlet 133.

[0025] The side wall of the box body 1 is fixedly connected to the mounting frame 2, and a first mounting groove 21 is provided on the inner wall of the mounting frame 2, and a second mounting groove 22 is provided on the side wall of the mounting frame 2. The first mounting groove 21 and the second mounting groove 22 are communicated with each other. A filter plate 23 is movably connected inside the mounting frame 2, and the filter plate 23 is located in the first mounting groove 21. The side wall of the mounting frame 2 is fixedly connected to a clamping plate 24 by bolts, and the clamping plate 24 is located in the second mounting groove 22. The clamping plate 24 is used to release the limit of the clamping plate 24 and the mounting frame 2 by rotating the bolts, and then the filter plate 23 can be directly pulled out to be cleaned and replaced, thereby reducing the workload of the staff.

[0026] A slide groove 102 is provided on the side wall of the box body 1, and a limit block 161 is fixedly connected to the side wall of the rack 16. The limit block 161 is located in the slide groove 102, and the limit block 161 is slidably connected to the inner wall of the slide groove 102, so as to use the limit block 161 to limit the rack 16 and increase the stability of the linear motion of the rack 16.

[0027] The driving plate 15 is in a Z-shape, and is used to simultaneously drive the upper and lower racks 16 when the driving plate 15 moves linearly.

[0028] The height of the filter plate 23 is greater than the distance between the inner bottom wall and the inner top wall of the installation frame 2 , and is used to limit the filter plate 23 and increase the stability of the filter plate 23 inside the installation frame 2 .

[0029] A gap is left between the side wall of the rotating rod 18 and the inner wall of the box body 1 to prevent the rotating rod 18 from getting stuck with the inner wall of the box body 1 when rotating.

[0030] Working principle: First, by starting the electric heating network 11 and the DC brushless fan 12, the DC brushless fan 12 outputs the heat output by the electric heating network 11 to the air storage box 13 through the wind, and then uses the connecting hose 131 to transport it to the connecting pipe 132, and then output it from the outlet 133, thereby adjusting the internal temperature of the box 1. Then, the upper and lower temperature sensors detect the temperature inside the box 1. When the upper and lower temperatures are inconsistent, the electric push rod 14 is started, so that the electric push rod 14 drives the drive plate 15 to move linearly, so that the drive plate 15 drives the two racks 16 linear motion, so that the rack 16 drives the large gear 17 to rotate respectively, and the two large gears 17 turn in opposite directions, the large gear 17 drives the small gear 19 to rotate, so that the small gear 19 drives the rotating rod 18 to rotate, and the rotating rod 18 drives the connecting pipe 132 to rotate, thereby realizing the adjustment of the output angle of the air outlet 133, so that the temperature in the box body 1 is basically maintained at the same level, thereby ensuring the constant temperature state in the box body 1, and secondly, by rotating the bolt to release the limit of the clamping plate 24 and the mounting frame 2, and then directly pulling out the filter plate 23 to achieve its cleaning and replacement.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas path constant temperature system for a specific surface area and pore size analyzer, comprising a housing (1), characterized in that: The side wall of the box body (1) is provided with a third installation slot (101), an electric heating net (11) is installed inside the box body (1), and the electric heating net (11) is located in the third installation slot (101), a DC brushless fan (12) is fixedly connected to the inner side wall of the box body (1), an output end of the DC brushless fan (12) is fixedly connected to an air storage box (13), and two connecting hoses (131) are fixedly connected to the side wall of the air storage box (13), and one end of the connecting hose (131) away from the air storage box (13) is fixedly connected to a connecting pipe (132), and the side walls of the connecting pipe (132) are fixedly connected to the side walls of the connecting hose (131). An air outlet (133) is evenly provided, a side wall of the box body (1) is fixedly connected to an electric push rod (14), an output end of the electric push rod (14) is fixedly connected to a driving plate (15), both ends of the driving plate (15) are fixedly connected to a rack (16), the rack (16) is meshedly connected to a large gear (17), an inner wall of the box body (1) is movably connected to a rotating rod (18), a side wall of the rotating rod (18) is fixedly connected to a small gear (19), the small gear (19) is meshedly connected to the large gear (17), and a connecting pipe (132) is fixedly connected to the rotating rod (18) through a pipe nail.

2. The gas path constant temperature system of the specific surface area and pore size analyzer according to claim 1, characterized in that: The side wall of the box body (1) is fixedly connected to a mounting frame (2); a first mounting groove (21) is provided on the inner wall of the mounting frame (2); a second mounting groove (22) is provided on the side wall of the mounting frame (2); the first mounting groove (21) and the second mounting groove (22) are communicated with each other; a filter plate (23) is movably connected inside the mounting frame (2); the filter plate (23) is located in the first mounting groove (21); a clamping plate (24) is fixedly connected to the side wall of the mounting frame (2) by bolts; and the clamping plate (24) is located in the second mounting groove (22).

3. The gas path constant temperature system of the specific surface area and pore size analyzer according to claim 1, characterized in that: The side wall of the box body (1) is provided with a sliding groove (102), the side wall of the rack (16) is fixedly connected to a limiting block (161), the limiting block (161) is located in the sliding groove (102), and the limiting block (161) and the inner wall of the sliding groove (102) are slidably connected.

4. The gas path constant temperature system of the specific surface area and pore size analyzer according to claim 1, characterized in that: The driving plate (15) is in a Z shape.

5. The gas path constant temperature system of the specific surface area and pore size analyzer according to claim 2, characterized in that: The height of the filter plate (23) is greater than the distance between the inner bottom wall and the inner top wall of the installation frame (2).

6. The gas path constant temperature system of the specific surface area and pore size analyzer according to claim 1, characterized in that: A distance is left between the side wall of the rotating rod (18) and the inner side wall of the box body (1).

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