Instrument for rapidly measuring air permeability

Abstract

The utility model relates to the technical field of measuring instruments, in particular to a rapid air permeability measuring instrument which comprises a measuring instrument base, three supporting legs are fixedly installed at the lower end of the measuring instrument base, an installation frame is installed on the outer surface of the measuring instrument base in a sliding mode, and a vacuum pump is installed in the measuring instrument base. A conveying pipe is installed at the upper end of the vacuum pump, a storage table is installed at the upper end of the conveying pipe, a supporting plate is installed on the inner wall of the measuring instrument base, and a measurer is installed at the upper end of the supporting plate. According to the improved rapid air permeability measuring instrument, quartz sand is placed above the object placing table, is matched with the sliding rod, the pressing rod and other parts for compaction and plastic fixation, and then is matched with the vacuum pump, the object placing table, the measurer and other parts; when the device is used, the device can quickly measure the air permeability of the quartz sand, meanwhile, the quartz sand is effectively prevented from collapsing during measurement, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, in particular to a rapid air permeability measuring instrument. Background Art

[0002] In the melting process of high-purity quartz crucible, vacuum arc method is used for melting and then formed by rotary laying process. During the melting process, the permeability of quartz sand plays a key role in ensuring the pressure difference conduction of vacuum under high temperature, the control of bubbles in the transparent layer of crucible and the overall thickness of bubble layer. Therefore, an instrument for stably detecting the permeability of quartz sand is needed to characterize the permeability properties of different types of quartz sand as an important indicator for monitoring incoming quartz sand.

[0003] At present, most of the existing quartz sand air permeability measuring instruments are used to directly pour the quartz sand into the test pipe without compacting and fixing the quartz sand. This can easily lead to the particles on the outer surface of the quartz sand being blown away by the measuring wind inside the device during measurement, resulting in the collapse of the quartz sand, and the air permeability measurement cannot be performed well, affecting the measurement effect of the device. Utility Model Content

[0004] The purpose of the utility model is to provide a rapid air permeability measurement instrument to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: a rapid air permeability measurement instrument, including a measuring instrument base, three supporting legs are fixedly installed at the lower end of the measuring instrument base, a mounting frame is slidably installed on the outer surface of the measuring instrument base, a vacuum pump is installed inside the measuring instrument base, a delivery pipe is installed at the upper end of the vacuum pump, a storage table is installed at the upper end of the delivery pipe, a support plate is installed on the inner wall of the measuring instrument base, and a measuring device is installed at the upper end of the support plate.

[0005] Further preferably, a first reserved hole is opened inside the measuring instrument base, a second reserved hole is opened on the inner wall of the measuring instrument base, and a transparent dustproof plate is fixedly installed inside the mounting frame.

[0006] Further preferably, first fixing bolts are installed at four corners of the vacuum pump, and the vacuum pump part is installed inside the measuring instrument base by matching the first fixing bolts with the first reserved holes.

[0007] Further preferably, four second fixing bolts are installed on the side end of the support plate, and the support plate portion is installed on the inner wall of the measuring instrument base by cooperating with the second reserved hole portion through the second fixing bolts.

[0008] Further preferably, a sliding rod is fixedly mounted on the upper end of the support plate, a pressing rod is slidably mounted inside the sliding rod, and a rotating handle is rotatably mounted on the upper end of the pressing rod.

[0009] Further preferably, a limiting groove is provided at a side end of the support plate, a storage platform is slidably installed inside the limiting groove, and the measuring device part is installed on the upper end of the support plate through a sliding rod.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the utility model, quartz sand is placed on the storage table, and is compacted and plastically fixed by cooperating with a sliding rod, a pressure rod and other parts, and then is coordinated with a vacuum pump, a storage table and a measuring device and other parts, so that the device can quickly measure the air permeability of the quartz sand when in use and effectively prevent the quartz sand from collapsing during measurement, thereby improving the practicality of the device.

[0012] In the utility model, the measuring instrument base, vacuum pump, mounting frame and support plate, measuring device and other parts are designed to cooperate with each other, so that the device can be quickly disassembled when a failure occurs in the later stage and needs to be repaired, so that it is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the base structure of the utility model measuring instrument;

[0014] Figure 2 This is a schematic diagram of the installation framework structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the vacuum pump of the utility model;

[0016] Figure 4 This is a schematic diagram of the support plate structure of the utility model.

[0017] In the figure: 1. measuring instrument base; 11. supporting legs; 12. mounting frame; 13. transparent dustproof plate; 14. first reserved hole; 15. second reserved hole; 16. vacuum pump; 17. first fixing bolt; 18. conveying pipe; 19. storage table; 2. supporting plate; 21. second fixing bolt; 22. sliding rod; 23. pressure rod; 24. rotating handle; 25. limiting groove; 26. measuring instrument. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 4 The utility model provides a technical solution: a rapid air permeability measuring instrument, including a measuring instrument base 1, three supporting legs 11 are fixedly installed at the lower end of the measuring instrument base 1, a mounting frame 12 is slidably installed on the outer surface of the measuring instrument base 1, a vacuum pump 16 is installed inside the measuring instrument base 1, a delivery pipe 18 is installed at the upper end of the vacuum pump 16, a storage table 19 is installed at the upper end of the delivery pipe 18, a support plate 2 is installed on the inner wall of the measuring instrument base 1, and a measuring device 26 is installed at the upper end of the support plate 2.

[0020] In this embodiment, Figure 1 and Figure 2 As shown, a first reserved hole 14 is opened inside the measuring instrument base 1, a second reserved hole 15 is opened on the inner wall of the measuring instrument base 1, and a transparent dustproof plate 13 is fixedly installed inside the mounting frame 12. This structure can protect the internal facilities of the device when not in use, thereby extending the service life of the device.

[0021] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the four corners of the vacuum pump 16 are installed with first fixing bolts 17, and the vacuum pump 16 is installed inside the measuring instrument base 1 through the first fixing bolts 17 and the first reserved holes 14. This structure can quickly install the vacuum pump 16 and the support plate 2 when in use, and can also be quickly disassembled for easy cleaning when necessary.

[0022] In this embodiment, Figure 1 , Figure 2 and Figure 4 As shown, four second fixing bolts 21 are installed on the side end of the support plate 2, and the support plate 2 is partially installed on the inner wall of the measuring instrument base 1 by cooperating with the second reserved hole 15 through the second fixing bolts 21. This structure can quickly install the support plate 2 during use, which is convenient for subsequent use.

[0023] In this embodiment, Figure 1 and Figure 4 As shown, a sliding rod 22 is fixedly installed on the upper end of the support plate 2, a pressing rod 23 is slidably installed inside the sliding rod 22, and a rotating handle 24 is rotatably installed on the upper end of the pressing rod 23. This structure can press the quartz sand into plasticity under the cooperation of the sliding rod 22, the pressing rod 23 and the rotating handle 24, thereby facilitating the air permeability test.

[0024] In this embodiment, Figure 1 , Figure 3 and Figure 4As shown, a limiting groove 25 is provided at the side end of the support plate 2, and a storage platform 19 is slidably installed inside the limiting groove 25. The measuring device 26 is installed on the upper end of the support plate 2 through a sliding rod 22. This structure enables rapid assembly of the device, thereby facilitating the startup of the device for quick use.

[0025] The use method and advantages of the utility model: When the air permeability rapid determination instrument is used, the working process is as follows:

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, when using, the user first places the device on a horizontal surface, picks up the measuring instrument base 1, installs the supporting legs 11 under the measuring instrument base 1, then installs the mounting frame 12 on the outer surface of the measuring instrument base 1, installs the transparent dustproof plate 13 inside the mounting frame 12, then picks up the vacuum pump 16, installs the delivery pipe 18 above the vacuum pump 16, and installs the storage table 19 above the delivery pipe 18, then picks up the assembled vacuum pump 16 part and installs it inside the measuring instrument base 1, then picks up the first fixing bolt 17 and installs it to the four sides of the vacuum pump 16. The vacuum pump 16 is partially fixed inside the measuring instrument base 1 by cooperating with the first reserved hole 14 on the corner. Then the user picks up the support plate 2, installs the sliding rod 22 on the top of the support plate 2, and then installs the pressure rod 23 inside the sliding rod 22. Then the rotating handle 24 is installed on the pressure rod 23. Then the user installs the measuring device 26 on the sliding rod 22. Then the user installs the assembled support plate 2 part on the inner wall of the measuring instrument base 1, and then picks up the second fixing bolt 21 and installs it to the side end position of the support plate 2, and the second fixing bolt 21 is connected with the second reserved hole 1. 5 parts are connected and fixed, and then the user picks up the storage table 19 part and inserts it into the limiting groove 25 opened at the side end of the support plate 2. When the user needs to use the device, the user slides the mounting frame 12 to one side and slides the mounting frame 12 away from the outer surface of the measuring instrument base 1. Then the user places the quartz sand to be measured above the middle hole net of the storage table 19. Because the gap of the hole net is small, the quartz sand is prevented from falling into the inside of the device while ensuring air permeability. Then, the user turns the rotating handle 24. The rotating handle 24 rotates in coordination with the upper sliding rod 22, which will push the pressing rod 23 part downward, from The top of the quartz sand and the top of 19 are flattened and plasticized, and then the user starts the measuring device 26 and the vacuum pump 16. The start of the vacuum pump 16 will cause its internal fan to rotate to generate wind, and then the wind is transported from the bottom of the storage table 19 to the top through the conveying pipe 18, so as to pass through the quartz sand for air permeability test. At this time, the middle measuring network of the measuring device 26 will capture the wind for analysis, and then display the detected wind on the display above it. Then the user can compare the measured wind force with the actual wind force generated by the vacuum pump 16 to determine the air permeability of the quartz sand.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rapid air permeability measurement instrument, comprising a measuring instrument base (1), characterized in that: Three supporting legs (11) are fixedly mounted on the lower end of the measuring instrument base (1); a mounting frame (12) is slidably mounted on the outer surface of the measuring instrument base (1); a vacuum pump (16) is mounted inside the measuring instrument base (1); a delivery pipe (18) is mounted on the upper end of the vacuum pump (16); a storage table (19) is mounted on the upper end of the delivery pipe (18); a support plate (2) is mounted on the inner wall of the measuring instrument base (1); and a measuring device (26) is mounted on the upper end of the support plate (2).

2. The rapid air permeability measuring instrument according to claim 1, characterized in that: A first reserved hole (14) is provided inside the measuring instrument base (1), a second reserved hole (15) is provided on the inner wall of the measuring instrument base (1), and a transparent dustproof plate (13) is fixedly installed inside the mounting frame (12).

3. The rapid air permeability measuring instrument according to claim 2, characterized in that: First fixing bolts (17) are installed at the four corners of the vacuum pump (16), and the vacuum pump (16) is partially installed inside the measuring instrument base (1) through the first fixing bolts (17) and the first reserved holes (14).

4. The rapid air permeability measuring instrument according to claim 3, characterized in that: Four second fixing bolts (21) are installed at the side end of the support plate (2), and the support plate (2) is partially installed on the inner wall of the measuring instrument base (1) by matching the second fixing bolts (21) with the second reserved holes (15).

5. The rapid air permeability measuring instrument according to claim 4, characterized in that: A sliding rod (22) is fixedly mounted on the upper end of the support plate (2), a pressing rod (23) is slidably mounted inside the sliding rod (22), and a rotating handle (24) is rotatably mounted on the upper end of the pressing rod (23).

6. The rapid air permeability measuring instrument according to claim 5, characterized in that: A limiting groove (25) is provided at the side end of the support plate (2), a storage platform (19) is slidably installed inside the limiting groove (25), and the measuring device (26) is partially installed on the upper end of the support plate (2) through a sliding rod (22).

Images