JP3008275U - Sampling box - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] It is an object to provide a sampling box having a structure in which the lid can be opened and closed instantly by one-touch operation. [Structure] A main body having a bottom plate has an inlet nozzle on the upper side and an outlet nozzle on the lower side, and a lid that is openably and closably attached to the upper part of the main body via a hinge is opened and closed to collect a sample from the inlet nozzle. In the sampling hox, a pair of left and right engaging plates having a circular hole provided so as to project from an edge portion of the upper end flange of the main body body and communicating with an upper cutout, and projecting at left and right end portions of the lid. A pair of left and right bearing plates provided with circular holes, a handle at the middle portion, and a cross section at each of the left and right end portions is a perfect circle, and the bearing portion axially attached to the circular hole of the bearing plate and the oval cross section are oval. A shaft having an engaging portion that is provided eccentrically with respect to the axial center and that engages with the circular hole through the notch of the engaging plate, and rotates and vertically moves the handle to tighten and close the lid. It is characterized by opening and closing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sampling box, and more particularly, to a structure of a sampling port used in a sulfur recovery device or the like.

[0002]

[Prior art]

 In manufacturing plants or processing plants, it is often practiced to directly check the properties such as product purity by taking a sample and visually inspecting the hue and viscosity of the sample. For this reason, a sampling port (hereinafter referred to as a sampling box) is often provided in a key part of the device.

For example, in a petroleum refining plant, hydrogen sulfide produced as a by-product in the refining process is used as a raw material, and a large amount of liquid sulfur is produced by a sulfur recovery device utilizing the Claus reaction. Usually, four or more sampling boxes are installed. In the above sulfur recovery device, in order to improve the recovery rate, the reactor has multiple stages of three or more stages, and the elemental sulfur produced in the reactor is condensed by the condensers provided downstream of each reactor. It becomes liquid sulfur and flows down to the underground sulfur pit that is installed underground.

The purity of the liquid sulfur flowing out from each of the above condensers depends on the amount of impurities and the like produced by a side reaction in the upstream reactor. Further, the hue of liquid sulfur changes sensitively depending on the content of impurities, and the purity of the product sulfur can be confirmed by visually observing this hue.

For this reason, a sampling box as shown in FIG. 4 is provided in the middle of the pipe exiting each condenser, and the operator makes regular patrols to collect a sample from this sampling box and visually or The purity of each product sulfur is confirmed by analysis.

Next, the structure of the conventional sampling box will be described with reference to FIG. In the figure, reference numeral 1 is a cylindrical body cylinder, a bottom plate 2 is attached to the bottom portion, and a ceiling plate 3 is attached to the top portion in a liquid-tight manner. Reference numeral 4 denotes an inlet nozzle that horizontally projects from the upper part of the main body 1 and is connected to a condenser outlet pipe via a flange. Reference numeral 5 denotes an outlet nozzle projecting vertically downward from the bottom plate 2, which is connected to a pipe entering the sulfur pit via a flange.

Reference numeral 6 denotes a lid made of a disc whose upper portion is cut out in an arch shape, and is attached to the ceiling plate 3 via hinges 7 and 7A so as to be openable and closable. Reference numeral 8 is a butterfly bolt that is rotatably attached to a lug 9 fixed to the lower portion of the main body 1 in a vertical plane. A butterfly nut 10 is screwed to fasten the lid 6 to the flange 11 of the main body 1. Then, an annular packing (not shown) is pressure-welded to hermetically seal the sampling box.

The conventional sampling box having the above configuration has the following problems in operation. That is, every time a sample is taken, the wing nut 10 is rotated and loosened, the lid 6 is lifted up, and then a sample is taken with a ladle, which requires a corresponding labor. Moreover, during this opening / closing operation, although a small amount of hydrogen sulfide is dissolved in liquid sulfur, it may be released into the atmosphere. Considering that there are at least four sampling boxes in the device as described above, and the number of times of sampling may be several times a day, the time required for this sampling is It is desirable that the number is as small as possible.

[0009]

[Problems to be solved by the device]

 The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a sampling box having a structure in which the lid can be opened and closed instantly and sealed by a one-touch operation.

[0010]

[MEANS FOR SOLVING THE PROBLEMS] The gist of the present invention is to have an inlet nozzle at an upper portion of a side surface of a main body body having a bottom plate and an outlet nozzle at a lower portion thereof, and to open and close the upper portion of the main body body via a hinge. In a sampling hox that freely opens and closes a lid and collects a sample from an inlet nozzle, it has a circular hole protruding from the edge of the upper end flange of the body barrel and communicating with an upward cutout. A pair of left and right engaging plates, a pair of left and right bearing plates protruding from the left and right ends of the lid and having circular holes, a handle in the middle, and a cross-section with a perfect circle at the left and right ends. A bearing portion axially attached to the circular hole of the bearing plate has an oval cross section, is provided eccentrically with respect to the axial center on the end surface of the bearing portion, and is engaged with the circular hole through a notch of the engaging plate. And a shaft having a mounting part, and the handle is rotated and moved upward. To a certain sampling box, characterized by fastening and closing the lid.

[0011]

[Action]

 To collect a sample, rotate the handle of the shaft in Fig. 1 from 3 o'clock to 12 o'clock, and the longitudinal direction of the oval-shaped engaging part at both ends of the shaft is the notch of the circular hole of the engaging plate. Since it matches the direction, the shaft can be removed from the locking plate and the lid can be opened by pulling up the handle. If this state is maintained and the scoop is moved directly below the tip of the inlet nozzle 4, the liquid sulfur flowing down can be collected.

Next, when the handle is lowered in the 12 o'clock direction, the engaging portions at both ends of the shaft are circular holes through the notches of the left and right engaging plates protruding from the edge of the main body flange. Can be installed inside. After that, when the handle is pulled from 12 o'clock to 3 o'clock, the shaft rotates around the circular hole of the engaging plate, but the engaging part of the shaft is eccentric from the center of the shaft. As shown in Fig. 3, since the B dimension is larger than the A dimension, when the B dimension comes to the A dimension position due to the rotation, the shaft is inserted through the bearing plate by the dimension B-A to cover the lid. Completely seal the sampling box by pressing it against the annular packing installed in the groove of the body flange. Since this sampling box has the above functions, it can be applied not only to sulfur recovery equipment, but also to equipment with a high sampling frequency such as sludge treatment equipment at sewage treatment plants.

[0013]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. 1 is a vertical cross-sectional view of a sampling box according to an embodiment of the present invention, FIG. 2 is a plan view taken along line II-II of FIG. 1, and FIG. 3 is an enlarged view of a fastening portion which is a main part of the present invention. .

In the figure, the same members as those in FIG. 4 are denoted by the same reference numerals. That is, 1 is a main body, 2 is a bottom plate, 3 is a ceiling plate, 4 is an inlet nozzle, and 5 is an outlet nozzle. Reference numeral 20 denotes a lid made of a circular plate whose upper portion is cut out in an arc shape, and a plurality of reinforcing ribs 21 are fixedly attached thereto.

Reference numerals 22 and 23 are hinges that are fixed to the ceiling plate 3 and the lid 20, respectively, and that can open and close the lid 20. Reference numeral 24 denotes a shaft having substantially the same length as the diameter of the lid 20. The bearing portions 25 at the left and right ends of the shaft 24 are rotatable around the circular holes of the pair of left and right bearing plates 26, 26 fixed to the upper surface of the lid 20. Be worn.

On the outer end surfaces of the left and right bearing portions 25, 25 of the shaft 24, engaging portions 27, 27 having an oval cross section are projected. As shown in FIG. 3, the engaging portions 27, 27 are provided so as to be slightly eccentric with respect to the shaft centers of the bearing portions 25, 25. Reference numeral 28 denotes an annular upper end flange which is obliquely attached to the upper part of the main body 1, and a packing groove into which an O-ring packing is inserted is engraved on the outer surface thereof.

Reference numeral 29 denotes a pair of left and right fastening plates projecting from an edge portion of the upper end flange 28 and provided obliquely upward, a notch 30 is provided at an upper end thereof, and the notch 30 communicates with the notch 30 A circular hole 31 having the same diameter as the engaging portion 27 of the spindle is formed. Reference numeral 32 is a U-shaped handle provided in the middle portion of the shaft 24.

Next, the operation of the embodiment having the above configuration will be described. First, in order to open the lid 20 (two-dot chain line in FIG. 1) in the closed state, for example, when the handle 32 is rotated from the 3 o'clock direction to the 12 o'clock direction with the left hand, the engaging portion 27 of the shaft 24 is fixed. Since the direction of the parallel portion coincides with the notch direction of the engaging plate 29, the engaging part 27 of the shaft 24 can be removed from the engaging plate 29 by lifting the handle 32 upward, and thus the lid 20 can be opened. it can. A sample can be easily collected by lifting the handle 32 with the left hand and positioning the scoop with the right hand under the opening of the inlet nozzle 4.

Next, when closing the lid 20 after taking the sample, if the handle 32 is held down in the 12 o'clock direction and is lowered downward, the direction in which the engaging portion 27 of the shaft 24 is parallel to the engaging portion 27 is changed. Since the direction of the notch 30 of the plate 29 is the same, the engaging portion 27 can be smoothly inserted into the circular hole 31 of the engaging plate 29. After that, when the handle 32 is rotated from the 12 o'clock direction to the 3 o'clock direction, the shaft 24 rotates about the circular hole of the engaging plate 29, but the engaging portion 27 is eccentric with respect to the axis of the shaft 24. Therefore, as shown in FIG. 3, the B dimension portion of the shaft 24 rotates to the A dimension portion position, so that the lid 20 is attached to the upper end flange 28 via the bearing plate 26 and the B dimension dimension is changed. The O-ring packing can be pressure-welded to complete the sealing of the lid 20.

In the above embodiment, the lid 24 is provided in an oblique direction, but the present invention can be applied even when the lid 24 is installed horizontally. Further, the main body can be applied not only to the cylindrical shape but also to the rectangular shape.

[0021]

[Effect of device]

 According to the present invention having the above configuration and operation, the lid of the sampling box can be opened and closed instantly and can be completely sealed, which saves labor and prevents atmospheric emission of harmful gas, odorous gas, etc. The effect is obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a sampling box according to an embodiment.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged view of a fastening portion.

FIG. 4 is a vertical sectional view of a conventional sampling box.

[Explanation of symbols]

1; body barrel, 2; bottom plate, 3; ceiling plate, 4; inlet nozzle,
5; outlet nozzle, 6; lid, 7; hinge, 8; butterfly bolt,
9; lug, 10; wing nut, 11; body flange, 1
2; Handle, 20; Lid, 21; Rib, 22; Hinge, 2
3; hinge, 24; shaft, 25; bearing portion, 26; bearing plate,
27; engagement part, 28; main body flange, 29; engagement plate, 3
0: notch, 31: circular hole, 32: handle.

Claims (1)

[Scope of utility model registration request] 1. A main body cylinder having a bottom plate, which has an inlet nozzle on the upper side and an outlet nozzle on the lower side, and a lid which is attached to the upper part of the main body barrel via a hinge so as to be openable and closable to open and close a sample from the inlet nozzle. In the sampling hox to be sampled, a pair of left and right engaging plates having a circular hole which is provided so as to project from the edge portion of the upper end flange of the main body body and communicates with a notch in the upward direction, and a projecting portion at the left and right ends of the lid. And a pair of left and right bearing plates having circular holes and a handle at the middle portion, and a cross section at both left and right ends that is a perfect circle, and a bearing part that is axially attached to the circular holes of the bearing plate and a small cross section. A shaft having an engaging portion that is eccentrically provided with respect to the axial center on the end surface of the bearing portion and that engages with the circular hole through the notch of the engaging plate. And a lid for tightening and opening and closing the lid. Pulling box.