KR20020072596A - Device of sample picking for raw materials stir vacuum tank inner - Google Patents

Abstract

PURPOSE: An apparatus for picking sample inside a raw material stirring vacuum tank is provided in which there is not any danger that a tank filled with flammable gas is exploded, and the sample can be picked up as the vacuum state is being maintained in the tank. CONSTITUTION: The apparatus for picking sample inside a raw material stirring vacuum tank comprises a casing(10) which is injected into the raw material stirring vacuum tank, the lower part of which is opened, and to the upper side of which a holder(16) is fixed; a shaft(20) on the upper side of which a screw part(22) is formed in the casing so that the shaft is vertically moved when rotating a handle adhered onto the upper part of the shaft as it is being coupled to the holder; a valve seat(26) which is adhered to the lower end part of the shaft and opens or closes the lower part of the casing; a gas injection pipe(50) which is connected to one side of the casing and equipped with a switching valve(52); and a sample discharge pipe(30) which is projected into the casing from one side of the casing, and on the outer side of which a switching valve(34) is formed, wherein the valve seat is formed in a cone shape, and the apparatus further comprises a cleaning solution storage tank(46) installed on one side of the gas injection pipe.

Description

Sampling device inside vacuum tank for raw material stirring {DEVICE OF SAMPLE PICKING FOR RAW MATERIALS STIR VACUUM TANK INNER}

The present invention relates to a sampling device inside a vacuum tank for raw material stirring, and more specifically, to stirring a sample in a vacuum tank to check a state in which raw materials react in a stirring device for mixing various raw materials. The present invention relates to a sampling device inside a vacuum tank.

Typically, a stirring device for blending a water support material such as polyurethane or agitating or reacting various raw materials in a petroleum refining process or various chemical plants, is introduced into a tank and then stirred. At this time, when there is air in the tank, the raw material reacts with the air, and thus deterioration occurs. Therefore, the inside of the tank must always maintain a vacuum state. On the other hand, the various raw materials are collected from time to time the sample inside the tank to check the blended state and the presence of abnormality during the process of stirring, and to check this, after releasing the vacuum inside the tank to collect the sample, Opening the tank's door and taking a sample brings air into the tank, which leads to deterioration of the raw material, which takes a lot of time to restore to a vacuum state, which is uneconomical. In particular, the worker may be injured by toxic gas from the tank and cause environmental pollution.

In the conventional method for solving the above problems, a pipe connected from a vacuum pump is introduced into a tank and a sample is taken by the vacuum pump. At this time, a spark is generated in the motor driving the vacuum pump, which carries a risk of exploding a tank filled with flammable gas. In addition, the sample remaining in the vacuum pump is mixed with the sample collected later, the accuracy of the sample is reduced.

The present invention is to overcome the above-mentioned conventional problems, the object of the present invention is that there is no risk of explosion of a tank filled with flammable gas, vacuum tank for raw material stirring that can take a sample while maintaining the vacuum inside the tank An internal sampling device is provided.

It is another object of the present invention to provide a sampling device inside a vacuum tank for raw material stirring that can accurately check a pure sample without being mixed with a sample collected after the first sample is completely discharged inside the sampling device. have.

In order to achieve the above object, the present invention, the casing 10 is inserted into the vacuum tank for raw material stirring and the bottom is open, and assembled into the casing and rotates the handle attached to the upper vertically moved A shaft 20 having a cone-shaped valve seat attached to a lower portion thereof, a gas injection pipe 50 connected to one side of the casing 10 and injecting nitrogen gas, and introduced into the casing, and opened and closed on the outside thereof. Characterized in that composed of a sample discharge pipe 30 is provided with a valve 34.

1 is a central cross-sectional view showing the configuration of a sample collection device according to the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

<Description of the symbols for the main parts of the drawings>

10: casing 16: support

20: shaft 24: handle

26: valve seat 30: sample discharge pipe

36: Drain tube 40: Auxiliary casing

42: tank 46: washing liquid reservoir

50: gas injection pipe

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in describing the present invention, detailed descriptions of related well-known functions or configurations will be omitted if they may obscure the gist of the present invention.

1 is a central sectional view of a sampling device inside a vacuum tank for raw material stirring according to the present invention, and FIG. 2 is a cross-sectional view illustrating a casing and a sample discharge pipe introduced into the tank.

According to the drawing, a hole is formed in the upper surface of one side of the raw material stirring tank 42, and the flange tube 18 is inserted therein and then fixed by welding. Thereafter, a cylindrical casing 10 is fitted into the flange tube 18. The upper portion of the casing is exposed above the tank 42, and the lower portion extends long into the tank to be introduced into the raw material in the tank 42. . And while the auxiliary casing 40 is attached to the middle outer side of the casing 10 is fixed to the flange tube. At this time, the lower end of the auxiliary casing 40 is open and is introduced into the tank 42. In addition, the support 16 having a screw hole in the center is fixed to the inner upper side of the casing 10, and the shaft 20 is fitted into the casing 10. At this time, the upper portion of the shaft 20 is formed with a screw portion 22 is fastened to the support 16. And the upper end of the shaft 20 is protruded to the upper portion of the casing 10, the handle 24 is assembled, the upper surface of the casing 10, O-rings 14 for maintaining the airtight bracket 12 It is assembled by In addition, a valve seat 26 is attached to the lower end of the shaft 20 to open and close the lower end of the casing 10. At this time, the valve seat 26 has a slope (26a) extending from the top to the bottom as a cone (Cone) shape. Here, the lower end of the casing 10 is in contact with or in contact with the inclined surface to open and close the inside of the casing. Accordingly, when the handle 24 is rotated, the shaft 20 rotates vertically while rotating, and at the same time, the inside of the casing 10 is opened and closed by the valve seat 26.

Next, at one side of the casing 10, a gas injection tube 50 is connected to one side thereof, and a sample discharge tube 30 is fitted to the other side thereof. The gas injection pipe 50 is connected to a nitrogen gas storage container (not shown), and the valve 52 is mounted in the middle thereof. Therefore, when the valve 52 is opened, the compressed nitrogen gas is injected into the casing 10 through the gas injection pipe 50. Meanwhile, the gas injection pipe 50 between the valve 52 and the casing 10 has an opening / closing valve 48 and a washing solution reservoir 46 containing a washing solution such as solvents is connected thereto. The sample discharge pipe 30 is deeply inserted into the shaft, and a valve 34 is mounted on the sample discharge pipe 30 exposed to the outside. In addition, a drain pipe 36 is connected to a lower portion of the sample discharge pipe 30 between the casing 10 and the valve 34, and a valve 38 is mounted at an intermediate point of the drain pipe 36. It is connected to the casing 40. And a reservoir 44 is provided below the outer end of the sample discharge pipe (30).

The sampling device inside the vacuum tank for stirring the raw material of the present invention completed by the above configuration is operated as follows.

First, the tank 42 inside which the raw material is filled and agitated is in a vacuum state, and the casing 10 is also closed by the valve seat 26, and all the valves 34, 38, 48, and 52 are locked. Here, in order to take a raw material, that is, a sample in the tank 42, first, the valve seat 26 is opened by lowering the shaft 20 by turning the handle 24, and at the same time, the raw material is inside the casing 10. Is moved to maintain the same level of raw material in the tank. Thereafter, the valve seat 26 is closed by turning the handle 24 in the opposite direction. Then, the valve 52 of the gas inlet tube 50 is opened, and nitrogen gas is injected into the casing 10. The valve 34 provided at 30 is opened. As a result, the raw material moved into the casing 10 is moved through the sample discharge pipe 30 by the pressure of the nitrogen gas and discharged outside to be collected in the storage tank 44. After the sampling of the sample is completed as described above, when the valves of the gas inlet pipe 50 and the sample discharge pipe 30 are locked, a part of the raw material remaining in the sample discharge pipe 30 is assisted through the drain pipe 36. It is moved to the casing 40 is introduced into the tank 42, and also a portion of the raw material is moved down along the sample discharge pipe is collected in the lower casing (10). Then, when the valve 52 and the valve seat 26 of the gas injection pipe 50 are opened, the raw material is introduced into the tank 42 through the lower portion of the casing 10 by the pressure of nitrogen gas injected into the casing. Exit After that, the valve seat 26 is closed and the valve 52 of the gas injection pipe 50 is also closed.

As a result, the first sampling operation is completed, and when the valve 48 of the washing liquid reservoir 46 and the valve 52 of the gas injection tube 50 are opened, and the valve 34 of the sample discharge tube 30 is opened at the same time, nitrogen is released. The cleaning solution together with the gas cleans the inside of the casing and the sample discharge pipe and then exits to the outside of the sample discharge pipe 30. After all valves are closed, it is ready to perform the second sampling again, it is possible to perform a continuous sampling according to the above repeated operation.

As described above, the sample collection device inside the vacuum tank for stirring the raw material according to the present invention can simply take a sample while maintaining the vacuum state inside the vacuum tank, and does not mix with the sample remaining in the previous process. As only pure samples are taken, the inspection can be accurate, and toxic gases are not leaked to prevent worker health or contaminate the environment. In particular, as a relatively simple structure, the manufacturing cost is low, and the risk of explosion due to sparks is solved by not using electrical components such as a motor.

Claims (3)

A casing 10 which is introduced into a vacuum tank for raw material stirring and has a lower opening and a support 16 fixed to an upper side thereof; A shaft portion 20 formed inside the casing, the shaft portion 20 being vertically moved by rotating the handle attached to the upper portion while being engaged with the support 16; A valve seat 26 attached to a lower end of the shaft 20 to open and close a lower part of the casing 10; A gas injection pipe 50 connected to one side of the casing 10 and provided with an opening / closing valve 52; The sample collection device inside the vacuum tank for raw material stirring, characterized in that the sample discharge pipe 30 is introduced into the casing from one side of the casing (10), the opening and closing valve 34 is provided on the outside. The sampling device of claim 1, wherein the valve seat (26) has a cone shape. According to claim 1, One side of the gas injection pipe 50, the sampling liquid storage device inside the vacuum tank for raw material stirring, characterized in that the washing liquid reservoir 46 is provided.