CN220084387U - Sampling device - Google Patents

Abstract

The utility model provides a sampling device capable of improving mobility while ensuring the volume of a sampling chamber. The sampling device (1) is provided with a filtering structure (2), a sampling structure (3) and a supporting structure (4). The filter structure (2) has an outside air inlet, an outside air outlet and a filter. The filter is disposed between the outside air inlet and the outside air outlet. The sampling structure (3) has a sampling chamber. The sampling chamber communicates with an outside air outlet and temporarily accommodates outside air after passing through the filter structure (2). The support structure (4) supports the filter structure (2) and the sampling structure (3). The filter structure (2), the sampling structure (3) and the support structure (4) are configured to be separable from each other.

Description

Sampling device

Technical Field

The present utility model relates to a sampling device.

Background

As a conventional sampling device, a device having a sampling chamber for collecting ultrapure water is known (for example, refer to patent document 1). In such a sampling device, a sampling vessel is disposed in a sampling chamber filled with outside air after passing through a filter structure, and ultrapure water is introduced into the sampling vessel.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2000-131309

Disclosure of Invention

Problems to be solved by the utility model

In the above-described sampling device, mobility may be improved. For the purpose of improving the mobility, miniaturization of the sampling device is considered. However, if the sampling device is too small, it may be difficult to secure the volume of the sampling chamber.

The purpose of the present utility model is to provide a sampling device that can improve mobility while ensuring the volume of a sampling chamber.

Means for solving the problems

The sampling device of the present utility model comprises: a filter structure having an outside air inlet, an outside air outlet, and a filter disposed between the outside air inlet and the outside air outlet; a sampling structure having a sampling chamber which communicates with the outside air outlet and temporarily accommodates the outside air after passing through the filtering structure; and a support structure that supports the filter structure and the sampling structure, the filter structure, the sampling structure, and the support structure being configured to be separable from one another.

According to this sampling device, the sampling operation can be performed by using the sampling chamber in a state where the filter structure and the sampling structure are supported by the support structure. Further, the filter structure, the sampling structure, and the support structure are configured to be separable from each other, so that the filter structure, the sampling structure, and the support structure can be individually transported in a state where the filter structure, the sampling structure, and the support structure are separated from each other. Therefore, according to the sampling device, mobility can be improved while securing the volume of the sampling chamber.

The sampling structure may have: a sampling box including a sampling chamber, and a sampling window communicating with the sampling chamber and opening in a horizontal direction; an opening/closing door configured to be movable in a vertical direction with respect to the sampling window; and a fixing member configured to fix a position of the opening/closing door. Thus, the position of the opening/closing door can be fixed by the fixing member when the sampling window is in the open state, and the open state of the sampling window can be maintained.

The filter structure may have a bottom wall member including external air outlets uniformly distributed in the bottom wall member. This makes it possible to maintain the flow direction and the flow velocity distribution of the external air flowing into the sampling chamber uniform.

Effects of the utility model

According to the present utility model, it is possible to provide a sampling device capable of improving mobility while securing the volume of a sampling chamber.

Drawings

Fig. 1 is a front view of a sampling device according to an embodiment.

Fig. 2 is a side view of the sampling device shown in fig. 1.

Fig. 3 is a front view of the filter structure shown in fig. 1.

Fig. 4 is a top view of the filter structure shown in fig. 1.

Fig. 5 is a partial cross-sectional view of the filter shown in fig. 4.

Fig. 6 is a bottom view of the filter structure shown in fig. 1.

Fig. 7 is a front view of the sampling structure shown in fig. 1.

Fig. 8 is a partial enlarged view of fig. 7.

Fig. 9 is a cross-sectional view taken along line IX-IX shown in fig. 7.

Fig. 10 is a cross-sectional view taken along the line X-X shown in fig. 7.

Detailed Description

Hereinafter, embodiments of the present utility model will be described in detail with reference to the accompanying drawings. The same or corresponding portions in the drawings are denoted by the same reference numerals, and repetitive description thereof will be omitted.

The sampling device 1 shown in fig. 1 and 2 is used for sampling sample water such as ultrapure water, for example. The sampling device 1 comprises a filter structure 2, a sampling structure 3 and a support structure 4. The filter structure 2 is located above the sampling structure 3 in the Z-axis direction (vertical direction). The sampling structure 3 is located above in the Z-axis direction with respect to the support structure 4. The support structure 4 supports the filter structure 2 and the sampling structure 3.

The filter structure 2, the sampling structure 3 and the support structure 4 are configured to be separable from each other. The filter structure 2 is mounted on the sampling structure 3. The filter structure 2 is not fixed to the sampling structure 3. If the filter structure 2 is lifted, the filter structure 2 is separated from the sampling structure 3. The sampling structure 3 is mounted on a support structure 4. The sampling structure 3 is not fixed to the support structure 4. If the sampling structure 3 is lifted, the sampling structure 3 is separated from the support structure 4. The sampling device 1 is used in a state in which the sampling structure 3 is mounted on the support structure 4 and the filter structure 2 is mounted on the sampling structure 3. The sampling device 1 is transported in a state in which the filter structure 2, the sampling structure 3 and the support structure 4 are separated from each other. The filter structure 2, the sampling structure 3 and the support structure 4 are each transported separately.

As shown in fig. 3, the filter structure 2 has an outside air inlet 2a and an outside air outlet 2b. The outside air flows into the filter structure 2 from the outside air inlet 2 a. The outside air flowing into the inside of the filter structure 2 flows out from the outside air outlet 2b. The filter structure 2 includes a filter box 21, a filter box 22, a filter box 23, a blower box 24, and a fixing mechanism 25.

The filter box 21 is located above the filter box 22 in the Z-axis direction. The filter box 22 is located above the air feed box 24 in the Z-axis direction. The air feed box 24 is located above the filter box 23 in the Z-axis direction.

Each of the filter tanks 21, 22, 23 has a tank body and a filter accommodated in an inner space of the tank body. The inner space of the case of the filter case 22 communicates with the inner space of the case of the filter case 21. The outside air inlet 2a of the filter structure 2 is constituted by an opening of a case body of the filter case 21. The outside air outlet 2b of the filter structure 2 is constituted by a bottom wall member 231 (see fig. 6) of the filter box 23.

The filters of the filter boxes 21, 22, 23 are provided at the outside air inlet 2a and outside air outletBetween the ports 2b. The respective filters of the filter boxes 21, 22 are gas component removal filters. The filter of the filter box 21 removes alkaline gas from the outside air. The filter of the filter box 22 removes acid gases from the outside air. The filter of each filter box 21, 22 is, for example, a chemical filter. Chemical filters, e.g. for removing H ₂ SO ₄ 、HNO ₃ Acid gases such as HF, HCl and boron, and NH ₃ Basic gases such as amines, organic gases such as acetone, toluene, organic solvents and hydrocarbons, or SO _x 、H ₂ Sulfur-based gases such as S and mercaptans. When sampling sample water such as ultrapure water, it is important to prevent the mixing of acid gas or alkaline gas into the sample water.

The filter of the filter box 23 is a particulate removal filter (high performance filter for particulate removal). The filter of the filter box 23 removes particles with high performance. The filter of the filter box 23 is, for example, a HEPA filter (High Efficiency Particulate Air Filter) or ULPA filter (Ultra Low Penetration Air Filter) or the like. The filter of the filter box 23 may be made of a material that does not generate acid gas or alkaline gas. As a material that does not generate an acid gas or an alkaline gas, for example, a fluororesin such as a tetrafluoroethylene resin is mentioned. In the present embodiment, the filter of the filter box 23 may be a HEPA filter or ULPA filter made of a fluororesin or the like.

The blower box 24 includes a box body and a blower accommodated in an inner space of the box body. The inner space of the case of the air feed box 24 is respectively communicated with the inner space of the case of the filter box 22 and the inner space of the case of the filter box 23. The blower has a motor and a fan rotated by driving of the motor. When the fan of the blower rotates, the outside air flowing into the filter structure 2 through the outside air inlet 2a flows out through the outside air outlet 2b after passing through the filter of the filter box 21, the filter of the filter box 22, the fan of the blower, and the filter of the filter box 23 in this order. The fan of the blower has a variable function, for example. The fan of the blower is configured to adjust the air volume.

As shown in fig. 3 and 4, the fixing mechanism 25 includes fixing members 251, 252, 253. The fixing member 251 is fixed to a side surface of the filter box 23. The fixing member 252 is coupled to the fixing member 251. The fixing member 252 has a rod shape, for example. The fixing member 252 has a threaded portion. The length of the fixing member 252 can be adjusted by rotation of the screw portion. One end of the fixing member 252 is coupled to the fixing member 252. The fixing member 252 is rotatable with respect to the fixing member 251.

The fixing member 253 is disposed above the filter box 21 in the Z-axis direction. The other end of the fixing member 252 is inserted into a cylinder provided at the end of the fixing member 253. When the length of the fixing member 252 is reduced, the filter tanks 21, 22, 23 and the blower 24 are pressed by the fixing mechanism 25 in the Z-axis direction. Thereby, the filter structure 2 is integrated. Further, if the length of the fixing member 252 becomes large, the pressing of the fixing mechanism 25 is released. Thereby, the filter boxes 21, 22, 23 and the air feed box 24 can be separated from each other.

As shown in fig. 5, the filter 211 of the filter box 21 has, for example, an overlapping structure. The filter 211 is formed by bending a sheet-shaped filter member. The filter 211 includes a plurality of overlapping portions 212 that overlap each other when viewed from the X-axis direction (horizontal direction). The plurality of overlapping portions 212 are arranged in the X-axis direction. Each of the overlapping portions 212 has a sheet shape parallel to the Y-axis direction (horizontal direction). There is a gap extending in the Y-axis direction between the overlapping portions 212. Each overlapping portion 212 is a region of a portion of the filter 211. The overlapping portion 212 of the filter 211 in the X-axis direction, which is located at a part of the end, is sandwiched by grooves 215, and the grooves 215 are formed in a case 214 of the filter case 21. Thereby, the filter 211 is supported by the case 214. A gasket 216 is provided on the bottom surface of the filter box 21. The filters of the filter boxes 22 and 23 have the same overlapping structure as the filter 211.

As shown in fig. 6, the filter box 23 has a bottom wall member 231. The bottom wall member 231 has a rectangular plate shape. The outside air outlet 2b is formed in the bottom wall member 231. That is, the bottom wall member 231 includes the outside air outlet 2b. The outside air outlet 2b includes a plurality of through holes 2c. Each through hole 2c communicates with the inner space of the casing of the filter box 23. The plurality of through holes 2c are uniformly distributed over the entire area of the bottom wall member 231 when viewed from the Z-axis direction.

As shown in fig. 7, the sampling structure 3 includes a sampling box 31, an opening/closing door 32, and a fixing member 33. The sampling tank 31 is, for example, cubic. The sample box 31 has light transmittance. That is, the sampling box 31 is transparent. The material of the sampling tank 31 is, for example, polyvinyl chloride or the like. The sampling box 31 contains a sampling chamber S and a sampling window 3a. The sampling chamber S communicates with the outside air outlet 2b. The sampling chamber S temporarily accommodates the outside air passing through the filter structure 2 and flowing out from the outside air outlet 2b.

The sampling window 3a is formed in a front wall of the sampling box 31 (a side wall intersecting the Y-axis direction among the plurality of side walls of the sampling box 31). That is, the sampling window 3a is opened in the Y-axis direction. The sampling window 3a communicates with the sampling chamber S. A restricting member 311 is provided on the front wall of the sampling box 31. The restricting members 311 are located on both sides in the X-axis direction with respect to the sampling window 3a when viewed from the Y-axis direction. There is a gap between the restriction member 311 and the front wall of the sampling box 31.

The shutter 32 is movable in the Z-axis direction with respect to the sampling window 3a. The opening/closing door 32 is disposed between the restricting member 311 and the front wall of the sampling box 31. The opening/closing door 32 is not fixed to any one of the restricting member 311 and the front wall of the sampling box 31. A holding member 321 is provided on the outer surface of the opening/closing door 32. The operator can slide the opening/closing door 32 in the Z-axis direction while holding the holding member 321. When the opening/closing door 32 moves upward in the Z-axis direction, the sampling window 3a is opened. When the opening/closing door 32 moves to the lower side in the Z-axis direction, the sampling window 3a is closed. In the closed state of the sampling window 3a, the sampling window 3a includes an outflow region 3b that does not overlap with the opening/closing door 32 (is not closed by the opening/closing door 32). The outside air flowing into the sampling chamber S flows out of the outflow region 3b to the outside of the sampling chamber S.

A tube 312 is provided at the bottom wall of the sampling tank 31. The tube 312 is located outside the sampling chamber S. The tube 312 communicates with the sampling chamber S.

The fixing member 33 is configured to fix the position of the opening/closing door 32. As shown in fig. 8, the fixing member 33 is, for example, a bolt. The fixing member 33 is screwed into a bolt hole 31a formed in the sampling box 31. The fixing member 33 is movable in the X-axis direction. As a result of the fixing member 33 approaching the opening/closing door 32 in the X-axis direction, when the front end surface 33a of the fixing member 33 abuts against the side surface 32a of the opening/closing door 32, the position of the opening/closing door 32 is fixed by the action of the friction force from the fixing member 33.

As shown in fig. 9, the sampling box 31 has a partition plate 313. The partition plate 313 has, for example, a rectangular plate shape. The partition plate 313 is located above the sampling chamber S in the Z-axis direction. The partition plate 313 is disposed on a support plate provided on the sample box 31. The support plate has, for example, a rectangular frame shape when viewed in the Z-axis direction. A gasket or the like is provided between the partition plate 313 and the support plate. The filter structure 2 is mounted on the partition plate 313. The partition plate 313 includes a plurality of through holes 3c. Each through hole 3c communicates with the outside air outlet 2b and the sampling chamber S. The plurality of through holes 3c are uniformly distributed in the entire region of the partition plate 313 when viewed from the Z-axis direction. This can maintain the flow direction and the flow velocity distribution of the external air flowing into the sampling chamber S uniform.

As shown in fig. 10, the sampling box 31 has a partition plate 314. The partition plate 314 has a rectangular plate shape, for example. The partition plate 314 is disposed in the sampling chamber S. The partition plate 314 is disposed on the bottom wall of the sampling tank 31. The partition plate 314 includes a plurality of through holes 3d. The plurality of through holes 3d are uniformly distributed over the entire region of the partition plate 314 when viewed from the Z-axis direction. This can maintain the flow direction and the flow velocity distribution of the outside air flowing in the sampling chamber S uniform. Further, a plurality of plate members extending in the Y-axis direction are provided on the surface of the partition plate 314 facing the bottom wall of the sampling box 31. Thereby, a gap is formed between the partition plate 314 and the bottom wall of the sampling box 31.

In the sampling device 1 configured as described above, when the blower of the blower box 24 rotates, the outside air passing through the filter structure 2 continuously flows into the sampling chamber S and continuously flows out of the outflow region 3b. Thereby, the sampling chamber S is filled with the outside air from which impurities such as gas components and particles are removed. In such a sampling chamber S, a sampling vessel is disposed, and sample water such as ultrapure water is continuously introduced into the sampling vessel via an injection pipe or the like provided in the sampling tank 31, and the sample water overflowed from the sampling vessel is continuously discharged to the outside of the sampling chamber S via a pipe 312. In this way, in the environment of the outside air from which the impurities have been removed, the sample water continuously flows.

After the sample water is introduced into the collection container, the opening/closing door 32 moves upward in the Z-axis direction, and the sampling window 3a is opened. When the sampling window 3a is in an open state, the position of the opening/closing door 32 is fixed by the fixing member 33. In this state, the collection container is taken out of the sampling chamber S after the inlet of the collection container is closed by the cover. In addition, in the same manner as when the sampling window 3a is opened, the outside air passing through the filter structure 2 continuously flows into the sampling chamber S and continuously flows out of the outflow region 3b, and thus the inflow of the outside air from the sampling window 3a into the sampling chamber S is suppressed. As described above, according to the sampling device 1, contamination of the sample water by impurities contained in the outside air is suppressed, and as a result, the concentration of each component contained in the sample water can be detected with high accuracy. The component contained in the sample water may be impurities or the like contained in the sample water (raw sample water) before introduction into the collection container.

As described above, according to the sampling device 1, the sampling operation can be performed by the sampling chamber S in a state where the filter structure 2 and the sampling structure 3 are supported by the support structure 4. Further, since the filter structure 2, the sampling structure 3, and the support structure 4 are configured to be separable from each other, the filter structure 2, the sampling structure 3, and the support structure 4 can be individually transported in a state where the filter structure 2, the sampling structure 3, and the support structure 4 are separated from each other. Further, the filter boxes 21, 22, 23 and the air feed box 24 of the filter structure 2 are also configured to be separable from each other, so that the filter boxes 21, 22, 23 and the air feed box 24 can be individually conveyed in a state where the filter boxes 21, 22, 23 and the air feed box 24 are separated from each other. Therefore, according to the sampling device 1, mobility can be improved while securing the volume of the sampling chamber S. In the case where ensuring the air tightness between the filter boxes 21, 22, 23 and the air feed box 24 is important, the filter boxes 21, 22, 23 and the air feed box 24 may be transported in a state where the filter boxes 21, 22, 23 and the air feed box 24 are integrated.

The sampling box 31 contains a sampling chamber S and a sampling window 3a. The shutter 32 is movable in the Z-axis direction with respect to the sampling window 3a. The fixing member 33 is configured to fix the position of the opening/closing door 32. Thus, the position of the opening/closing door 32 can be fixed by the fixing member 33 when the sampling window 3a is in the open state, and the open state of the sampling window 3a can be maintained.

The filter structure 2 has a bottom wall member 231 including an outside air outlet 2b. The outside air outlets 2b are uniformly distributed in the bottom wall member 231. This can maintain the flow direction and the flow velocity distribution of the external air flowing into the sampling chamber S uniform.

Although the embodiments of the present utility model have been described in detail above, the present utility model is not limited to the above embodiments.

For example, the plurality of through holes 2c may be offset from a pair of opposite corners of the bottom wall member 231. Specifically, a plurality of through holes 2c are formed in the first corner of the bottom wall member 231. The formation region of the plurality of through holes 2c in the first corner is, for example, triangular. A plurality of through holes 2c are formed in the second corner of the bottom wall member 231. The second corner portion is opposite to the first corner portion when viewed from the Z-axis direction. The formation regions of the plurality of through holes 2c in the second corner portion are, for example, triangular. The through hole may not be formed between the first corner and the second corner. According to such a configuration, the filter is supported by the bottom wall member 231, and the flow of the outside air flowing into the sampling chamber S through the outside air outlet 2b can be maintained in a desired state.

Description of the reference numerals

1 sampling device, 2 filtration structure, 2a outside air inlet, 2b outside air outlet, 2c through hole, 3 sampling structure, 4 supporting structure, 3a sampling window, 31 sampling box, 32 opening and closing door, 33 fixing member, 231 diapire member, S sampling chamber.

Claims (3)

1. A sampling device is characterized in that,

the sampling device is provided with:

a filter structure having an outside air inlet, an outside air outlet, and a filter disposed between the outside air inlet and the outside air outlet;

a sampling structure having a sampling chamber which communicates with the outside air outlet and temporarily accommodates outside air after passing through the filtering structure; and

a support structure supporting the filter structure and the sampling structure,

the filter structure, the sampling structure, and the support structure are configured to be separable from one another.

2. The sampling device of claim 1, wherein the sampling device comprises a plurality of sampling electrodes,

the sampling structure has:

a sampling box including the sampling chamber, and a sampling window communicating with the sampling chamber and opening in a horizontal direction;

an opening/closing door configured to be movable in a vertical direction with respect to the sampling window; and

and a fixing member configured to fix a position of the opening/closing door.

3. The sampling device according to claim 1 or 2, wherein the sampling device comprises a plurality of sampling electrodes,

the filter structure has a bottom wall member including the outside air outlet,

the outside air outlet includes a plurality of through holes uniformly distributed in the bottom wall member.