JPH10176942A - Sampling apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent working environments from being contaminated by sampling of powder by respectively transferring powder taken in from a cylindrical member intake port to a takeout port or a purge hole depending on a rotating direction of a screw conveyer. SOLUTION: Powder deposited in a hopper 5 is taken from an intake port 9 into a cylindrical member 2. By rotating a handle 4 in a direction here, the powder is transferred by a screw conveyer 3 to a takeout port 11, from which a constant amount of the powder is taken out into a sampling measuring tube 6. Then a valve body 7 is opened manually in a direction of arrow 1O to put the powder in a housing 8. The powder remaining in the cylindrical member 2 is transferred to a purge hole 10 by the screw conveyer 3 by rotating the handle 4 in the other direction and is discharged into the hopper 5 from the purge hole 10. As a result, by selecting a rotating direction of the handle 4, sampling and purging can be selected, whereby environmental contamination such as powder leakage during sampling can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sampling device for quantifying and collecting a powder.

[0002]

2. Description of the Related Art Products produced from manufacturing facilities provided in factories and the like are once introduced into instruments and collected, then weighed, stored, and subjected to quality analysis. When the product is a powder, the powder generated from the operating manufacturing equipment is stored in a storage container using a ladle or the like from an outlet installed in a hopper or the like, and then analyzed. Sent to the process.

[0003]

However, in the conventional sampling operation, since the sample is taken out by opening the outlet and stored in the container, dust is generated.
The powdery material scattered around, and the working environment was deteriorated. On the other hand, in the conventional sampling work, since the sample is a powdery substance, it is difficult to measure and collect the sample, and when actually measuring and collecting the sample, leakage, scattering and dust generation of the sample may occur. There was a risk of happening. During the sampling process, the sample is sometimes opened, and foreign matter and impurities may be mixed in from the surrounding environment. In particular, when the product is sodium bicarbonate (sodium bicarbonate), good crystallinity is important from the viewpoint of production and quality. Therefore, special attention must be paid to the entry of foreign substances and impurities from the outside. Because I used instruments such as ladle repeatedly when collecting samples,
There was also a risk of foreign matter and impurities being mixed in these instruments. In addition, it is generally not desirable to directly sample a product or the like generated from an operating manufacturing facility.

Accordingly, the present invention prevents the work environment from being polluted by sampling and purging operations of the powdery material, makes it possible to measure and collect the powdery material, and removes foreign substances and impurities from the surrounding environment. An object of the present invention is to prevent contamination of the body, maintain the quality of a sample, and to make sampling work safe and secure.

[0005]

According to the first aspect of the present invention,
In order to solve the above-mentioned problem, an inlet disposed on an outer peripheral upper surface, a purge hole and an outlet disposed separately on an outer peripheral lower surface are provided, and a powdery substance is taken in through the inlet and the purge hole is provided. And a cylindrical member from which the powder can be taken out through the outlet, and a cylindrical member arranged coaxially with the cylindrical member so as to be rotatable in two forward and reverse rotational directions around an axis. When rotated in one of the rotation directions, the powdery material taken in from the inlet of the cylindrical member is conveyed toward the outlet of the cylindrical member, and rotated in the other rotation direction. A screw conveyor that conveys the powdery material taken in from the inlet of the cylindrical member toward the purge hole of the cylindrical member, and the inside of the cylindrical member through the inlet and the purge hole of the cylindrical member. A hopper accommodating a part of the cylindrical member so as to communicate with the hopper, and a hopper arranged outside the hopper so as to extend in a vertical direction, and communicating with the inside of the cylindrical member through an outlet of the cylindrical member. And an opening having a valve seat at the lower end, a cylindrical sampling and measuring pipe for measuring the amount of the powdery substance taken out from the outlet of the cylindrical member, and an opening of the sampling and measuring pipe. When seated on a valve seat, closes the opening of the sampling and measuring tube, when separated from the valve seat, a valve body that opens the opening of the sampling and measuring tube,
A storage member that is attached to the opening of the sampling and measuring tube while maintaining airtightness, and that stores a powdery material that falls from the opening of the sampling and measuring tube. .

According to a second aspect of the present invention, in order to solve the above-mentioned problems, in the first aspect of the present invention, a handle connected to one end of the screw conveyor is provided, and the storage member is formed of a plastic bag. It is characterized by having made it so that. According to a third aspect of the present invention, in order to solve the above-mentioned problems, in the first aspect of the present invention, the sampling measuring tube has a transparent portion in at least a part thereof. The transparent portion is provided with a scale indicating the amount of the powdery substance taken out of the sampling and measuring tube.

According to a fourth aspect of the present invention, in order to solve the above problem, in the first aspect of the present invention, the valve body is pushed upward to collect the sample. Opening and closing means for opening the opening of the sampling measuring tube separated from the valve seat of the opening of the measuring tube, wherein the valve body is seated on the valve seat of the opening of the sampling measuring tube by gravity. It is characterized by the following.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are views showing an embodiment of a sampling device according to the present invention. First, the configuration will be described.

FIG. 1 is a partial cross-sectional front view of a sampling device according to one embodiment, and FIG. 2 is a view taken along the line II-II of FIG. In FIG. 1, reference numeral 1 denotes a sampling device. The sampling device 1 includes a cylindrical member 2 and a cylindrical member 2.
, A handle 4 coupled to the tip of the screw conveyor 3, a hopper 5 containing a part of the cylindrical member 2, and a connection to the cylindrical member 2 outside the hopper 5. Sampling measuring tube 6 and sampling measuring tube 6
, And a storage member 8 arranged at a position facing the valve body 7.

The cylindrical member 2 has an inlet 9 disposed on the outer peripheral upper surface thereof, and a purge hole 1 disposed on the outer peripheral lower surface thereof at a distance.
0 and an outlet 11. In FIG. 1, 9a
Is a straight line perpendicular to the axis of the cylindrical member 2 passing through the inlet 9; 10a is a straight line perpendicular to the axis of the cylindrical member 2 passing through the purge hole 10; It is a straight line perpendicular to the axis of the cylindrical member 2 that passes. The positional relationship between the straight line 9a, the straight line 10a and the straight line 11a is such that the straight line 10a and the straight line 11a sandwich the straight line 9a. In other words, the straight line 9a becomes the straight line 10a and the straight line 11
a.

The screw conveyor 3 is arranged so as to be rotatable in two forward and reverse rotational directions around an axis in a coaxial relationship with the cylindrical member 2. The screw conveyor 3 is coupled at one end to the handle 4 via a bearing 12 and a thrust collar 13, and is rotatably supported by the cylindrical member 2. The other end of the screw conveyor 3 is screwed to a thrust lock nut 14 to prevent the screw conveyor 3 from coming off the cylindrical member 2. Hopper 5
A part of the cylindrical member 2 is housed so as to communicate with the inside of the cylindrical member 2 through the inlet 9 and the purge hole 10 of the cylindrical member 2.

The sampling and measuring tube 6 is arranged so as to extend vertically outside the hopper 5, and takes out the outlet 1 of the cylindrical member 2.
1 and connected to the cylindrical member 2 so as to communicate with the inside of the cylindrical member 2. The sampling and measuring tube 6 has an opening 6a at the lower end, and the opening 6a has a valve seat 15
Is formed. Further, a transparent portion is provided on a part of the side surface of the sampling measuring pipe 6 along the axial direction, and a scale indicating the amount of the powdery material taken out of the hopper 5 through the outlet 11 of the cylindrical member 2 in the transparent portion. 17 are provided. The valve element 7 is disposed so as to close the opening 6 a of the sampling and measuring pipe 6 when seated on the valve seat 16 of the sampling and measuring pipe 6, and to open the opening 6 a when separated from the valve seat 16. Together with the seat 16, a valve 18 is formed. The storage member 8 is attached to the opening 6a of the collection and measurement tube 6 while maintaining airtightness, and stores the powdery material that falls from the opening 6a of the collection and measurement tube 6. In the present embodiment, the storage member 8
Is composed of plastic bags.

Next, the operation will be described. In the sampling apparatus 1 shown in FIGS. 1 and 2, the powdery material generated by a manufacturing facility (not shown) accumulates in a hopper 5 connected to the manufacturing facility, and is taken into the cylindrical member 2 through an inlet 9. Can be Here, by rotating the handle 4 in one direction, the powdery material is conveyed toward the outlet 11 by the screw conveyor 3, and is taken out from the outlet 11 to the sampling measuring pipe 6 by a certain amount. The amount of the powdery substance to be taken out to the sampling measuring tube 6 is controlled by adjusting the rotation angle of the handle 4 in one direction. When the operator pushes the valve 7 directly by hand in the direction of the arrow 70 to open the valve 18, the powdery material is collected and stored in the storage member 8. The amount of the powdery material collected in the storage member 8 is controlled by the operator watching the scale 17 and adjusting the pressure on the valve body 7. As a result, a predetermined amount of the powder can be stored in the storage member 8 without opening.

The operation of opening the valve 18 is limited to an operation in which the operator pushes the valve 7 directly in the direction of the arrow 70 by hand. The powdery material remaining in the cylindrical member 2 is conveyed toward the purge hole 10 by the screw conveyor 3 by rotating the handle 4 in the other direction, and is transferred from the purge hole 10 to the hopper 5.
Is discharged into As a result, by selecting the rotation direction of the handle 4, the sampling operation and the purging operation can be easily selected and executed. Purging work
This is always carried out before the sampling operation, whereby the residue remaining in the cylindrical member 2 and the screw conveyor 3 during the previous sampling operation is removed.

In the above embodiment, the storage member is used as the storage member for storing the powdery material. However, the storage member is not particularly limited as long as it is a storage member that can be replaced with a new one for each sampling operation. Further, according to the above embodiment, by selecting the rotation direction of the screw conveyor, the sampling operation and the purging operation can be easily selected and executed, and the purging operation can be performed more easily than before. . Further, by controlling the rotation angle of the screw conveyor in one direction, the amount of the powdery material taken out to the sampling and measuring tube can be controlled, so that it is possible to easily take out the powdery material by a certain amount. Since the sampling and measuring tube is configured to communicate with the hopper via the cylindrical member,
The powdery substance can be transported and taken out without being opened, and there is no risk of foreign matter and impurities being mixed in from the surrounding environment. Even if the powdery substance is sodium bicarbonate, there is no risk of foreign matter being mixed. Further, a powdery material having an opening having a valve seat provided at a lower end of the sampling measuring tube so that the valve body is seated thereon, and a storage member disposed at a position facing the opening and falling from the opening Is stored, the powder can be collected and stored without using an instrument, and the powder can be stored without worrying about contamination of foreign substances and impurities. In addition, only by rotating the screw conveyor and opening and closing the valve composed of the valve element and the valve seat of the sampling and measuring pipe, the powder generated from the operating manufacturing equipment can be directly sampled. Sampling work can be performed safely without opening a production facility that is in operation as in the related art.

Further, by providing a handle at one end of the screw conveyor, the rotation angle of the screw conveyor can be controlled by operating the handle, so that the sampling operation and the purging operation can be more easily and easily selected and executed. Can be. In addition, since the storage member is made up of the storage member, the storage member can be replaced with a new one each time a sampling operation is performed, so that the risk of foreign matter and impurities entering the sample is drastically reduced, and the quality of the sample is maintained. can do.

Further, by providing a scale indicating the amount of the powdery substance taken out of the sampling and measuring tube on the transparent portion of the sampling and measuring tube, a predetermined amount of the powdery material can be more easily and reliably sampled. Further, by opening and closing the opening of the sampling and measuring tube by the opening / closing means, the operator can collect and store the powder without touching the valve body and the sample, so that foreign matter and impurities are mixed in the powder. It is possible to maintain the quality of the sample without worrying about the sampling, and to make the sampling operation safe and reliable.

[0018]

According to the present invention, the hopper accommodates a part of the cylindrical member so as to communicate with the inside of the cylindrical member through the inlet of the cylindrical member and the purge hole, and the screw conveyor moves in one of the rotation directions. When rotated in, the powdery substance taken in from the inlet of the cylindrical member was conveyed toward the outlet of the cylindrical member, and when rotated in the other rotation direction, was taken in from the inlet of the cylindrical member. The powdery material is conveyed toward the purge hole of the cylindrical member, and since the sampling and measuring pipe communicates with the inside of the cylindrical member through the outlet of the cylindrical member, leakage of the powdery material during sampling of the powdery material, The work environment can be prevented from being contaminated due to scattering and dust generation, and the powdery substance can be discharged into the hopper without being opened by the purge operation, thereby preventing the work environment from being contaminated by the purge operation. Kill.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view of an embodiment of a sampling device according to the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sampling apparatus 2 Cylindrical member 3 Screw conveyor 4 Handle 5 Hopper 6 Sampling measuring tube 7 Valve 8 Storage member 9 Inlet 10 Purge hole 11 Outlet 16 Valve seat 17 Scale 18 Valve 19 Opening / closing means

Claims (4)

[Claims] An inlet disposed on an upper surface of an outer periphery, a purge hole and an outlet disposed separately on a lower surface of the outer periphery, and a powdery substance is taken into the inside through the inlet, and the purge hole and the intake are removed. A cylindrical member from which the powder can be taken out through an outlet; and a cylindrical member arranged coaxially with the cylindrical member so as to be rotatable in two forward and reverse rotational directions around an axis. When rotated in one of the rotational directions, the powdery material taken in from the inlet of the cylindrical member is conveyed toward the outlet of the cylindrical member, and when rotated in the other rotational direction, the cylindrical member is rotated. A screw conveyor that conveys the powdery substance taken in from the inlet of the cylindrical member toward the purge hole of the cylindrical member, and communicates with the inside of the cylindrical member through the inlet and the purge hole of the cylindrical member. A hopper accommodating a part of the cylindrical member, and arranged to extend vertically outside the hopper, and communicate with the inside of the cylindrical member through an outlet of the cylindrical member. A sampling pipe having a cylindrical shape for measuring the amount of the powdery substance taken out from the outlet of the cylindrical member, and seating on the valve seat at the opening of the sampling pipe. When closed, the opening of the sampling and measuring tube is closed, and when separated from the valve seat, a valve body that opens the opening of the sampling and measuring tube, and attached to the opening of the sampling and measuring tube while maintaining airtightness. And a storage member for storing a powdery substance falling from an opening of the sampling and measuring tube. 2. The sampling device according to claim 1, further comprising a handle connected to one end of the screw conveyor, wherein the storage member is formed of a plastic bag. 3. The sampling and measuring tube has a transparent portion in at least a part thereof, and a scale is provided on the transparent portion to indicate the amount of the powdery material taken out of the sampling and measuring tube. The sampling device according to claim 1 or 2. 4. An opening / closing means for pushing the valve body upward to separate it from a valve seat at an opening of the sampling and measuring tube, and to open an opening of the sampling and measuring tube, wherein the valve body is moved by gravity due to gravity. The sampling device according to any one of claims 1 to 3, wherein the sampling device is seated on a valve seat at an opening of the sampling measuring tube.