KR20040019131A - An apparatus for automatically sampling acid in a pickling tank by using strip lifter - Google Patents

Abstract

PURPOSE: An apparatus for automatically sampling hydrochloric acid solution using strip lifter of strip pickling tank is provided to perform the strip pickling process more accurately and smoothly by collecting a sample of the hydrochloric acid solution for pickling strip automatically and simply without manual operation of workers. CONSTITUTION: In an apparatus for automatically sampling a hydrochloric acid solution(210) contained in a pickling tank(200) in the strip pickling process, the apparatus(1) comprises a piston rod fixing part(10) comprising a lever(12) installed on an upper part of frame(240) of strip lifter(230) at one side of the pickling tank in such a way that the lever is operated vertically with being inclined to a certain angle; a sample collection part(50) comprising a hollow tube integrally installed perpendicularly to a bushing part(252) through a fixed plate(56) so that an arm(250) of the lifter is rotationally inserted into the bushing part, and a piston member which is positioned inside the tube, and an upper part of which is fixed to the lever, wherein unidirectional check valves are respectively mounted on upper and lower parts of the tube; a suction part connected to a lower part of the tube of the sample collection part; and a sample storage part comprising a storage can connected to a branch pipe(66) of piston rod of the sample collection part.

Description

Hydrochloric acid automatic sampling device using strip lifter of strip pickling bath {AN APPARATUS FOR AUTOMATICALLY SAMPLING ACID IN A PICKLING TANK BY USING STRIP LIFTER}

The present invention relates to an apparatus for automatically sampling hydrochloric acid in a strip pickling process performed to remove scale on the surface of the strip during the strip manufacturing process and to improve the appearance cleanliness, and more particularly to the pickling of the strip. The present invention relates to an automatic sampling solution of hydrochloric acid using a strip lifter of strip pickling baths, which enables the pickling of hydrochloric acid samples to be carried out extremely easily and automatically without manual labor.

Hot rolled strips are generally pickled to remove the scale of their surface to improve the apparent cleanliness of the strip product. This process is illustrated in FIG.

In this pickling process, after the strips 202 are connected to each other by the welding machine 201 in a facility installed on one side of the pickling tank 200, the cracks are formed on the scale layer on the surface of the descaling apparatus 203 on the rear side. To give. The strip surface is then descaled by using a pickling reaction with hydrochloric acid through the pickling tank 200 to maintain the cleanness, and the strip 202 having been pickled is subjected to a post-treatment process.

On the other hand, the strip subjected to the pickling process is cold-rolled through the rinsing, drying, and side trimming device 205 on the rear side, and finally, the product is cut to the desired size for the next process or demand to produce a product. After completion, the transfer process is performed.

At this time, in the pickling process of the strip 202 as described above, it is especially important to maintain the concentration and concentration of the hydrochloric acid solution filled in the pickling tank 200 to pickle the strip, so that the hydrochloric acid is constantly and repeatedly during the pickling process of the strip. Samples of the liquid 210 should be taken and their components examined.

Therefore, in the sampling operation of the pickling tank 200 for such a conventional strip pickling, it is made by hand as shown in Figure 2, which is a menhole cover 235 provided on one side of the strip lifter 230 A worker directly opens a sample of hydrochloric acid 210 in the pickling tank 200 using a sample collection tool 236, and the sample is repeatedly analyzed to pickling environment of the pickling tank 200. Manage it.

The strip lifter 230 is equipped with a lifting cylinder 242 in the center of the vertical frame 240, a movable block 246 is mounted at the end of the rod 244, the pickling block 246 The b-shaped arm 250 extending inwardly of the tank 200 is connected. The strip lifter 230 is for lifting the strip 202 from the inside of the pickling bath 200. The strip 250 lifts and lowers the arm 250 by the operation of the lifting cylinder 242. 202) is to be listened to as needed.

On the other hand, in the pickling liquid sample picking operation of the conventional pickling tank 200 as described above, the worker picks the hydrochloric acid sample directly as the collecting container 236 by hand, so that the amount of the sample is not constant. Of course, since the sampling position is also different according to the operator, there was a disadvantage that it becomes difficult to perform a more uniform hydrochloric acid sample sampling operation.

In addition, in order to increase the efficiency of the pickling operation, the temperature of the hydrochloric acid solution (approximately 80 to 90 ° C) generates fumes from the pickling solution, and accordingly, the operator directly removes the fume gas, a toxic gas. Due to the inhalation, safety accidents such as hot liquid hydrochloric acid splashing and causing burns to workers may occur frequently due to worker poisoning, misoperation or other factors.

As a result, it is difficult to collect repetitive and rapid hydrochloric acid samples, resulting in various problems such as delaying the entire manufacturing process.

The present invention has been made in order to improve the various problems as described above, the object of which is to pick up the pickling solution sample for the pickling process of the strip without the operator's manual work, so that the component of the pickling hydrochloric acid solution Continuous and constant management of the spool, and the strip lifter of the strip pickling bath has been improved to prevent the accident of the operator by taking the sample with a closed device to prevent the inhalation of toxic gas. It is to provide a hydrochloric acid automatic sampling device.

1 is an explanatory diagram showing a general strip pickling process;

2 is a perspective view showing a hydrochloric acid sampling device according to the prior art;

3 is a perspective view of the hydrochloric acid automatic sampling device according to the present invention mounted on the side of the pickling bath;

4 is a perspective view showing a main configuration provided in the hydrochloric acid automatic sampling device according to the present invention;

Figure 5a) is an exploded perspective view showing the main configuration of the hydrochloric acid automatic sampling device according to the present invention;

Figure 5b) is an exploded perspective view showing the configuration of the sample collection unit provided in the hydrochloric acid automatic sampling device according to the present invention;

5c) is an exploded perspective view showing a reservoir equipped with a hydrochloric acid automatic sampling device according to the present invention;

Figure 6a) is a cross-sectional view showing the main configuration of the hydrochloric acid automatic sampling device according to the present invention;

Figure 6b) is a cross-sectional view showing a suction state of the hydrochloric acid automatic sampling device according to the present invention;

Figure 6c) is a cross-sectional view showing a discharge state of the hydrochloric acid automatic sampling device according to the present invention;

6d) is a sectional view showing the remaining amount drain state of the hydrochloric acid automatic sampling device according to the present invention.

<Description of Symbols for Main Parts of Drawings>

1 .... Hydrochloric acid automatic sampling device 10 .... Piston rod fixing part

12 ... lever 15 .... block

28a, 28b ... Supporting piece 30a, 30b ... Adjusting bolt

50 .... Sample 55 .... Tube

60 ... piston member 70 ... piston holder

72 ... spring 80 ... piston packing

86a, 86b ... Push bar 95 .... tube head cover

97 .... Operation 103 .... Push bar

110 ... suction 112 ... suction

115 .... Diameter enlargement 120 .... Sample reservoir

122 .... Canister 130 .... Canister

200 .... pickling bath 210 ... hydrochloric acid

230 .... strip lifter 240 ... frame

250 .... Arm of Type B

The present invention as a technical configuration for achieving the above object, in the device for automatically sampling the hydrochloric acid in the pickling tank in the pickling step of the strip,

A piston rod fixing part having a lever installed on one side of the pickling tank to be inclined upward and downward at a predetermined angle on an upper portion of the frame of the strip lifter;

A hollow tube vertically installed integrally and vertically through a fixing plate to a bushing portion into which the arm of the lifter is rotatably inserted, and having a piston member fixed to the lever at an upper end thereof; A sample collecting part equipped with one-way check valves at upper and lower ends thereof;

A suction part connected below the tube of the sampling part; And,

The sample storage unit having a reservoir connected to the branch pipe of the piston rod of the sampling unit; and the hydrochloric acid automatic sampling device using a strip lifter of the strip pickling tank, characterized in that it comprises a.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 3 is a perspective view showing the entire configuration of the hydrochloric acid automatic sampling device 1 using the strip lifter 230 of the strip pickling bath 200 according to the present invention.

The hydrochloric acid automatic sampling device 1 according to the present invention is a piston rod go having a lever 12 installed at a predetermined angle on an upper side of the frame 240 of the strip lifter 230 to one side of the pickling tank 200. The government 10 is provided.

As shown in detail in FIGS. 3 and 5, the piston rod fixing part 10 fixes the inclination angle adjusting block 15 of the lever 12 by welding to the upper part of the lift frame 240. One side of the long lever 12 is rotatably mounted on the lower side of the block 15. The lever 12 is rotatably mounted to the block 15 via a pin 17, the bottom surface of which is inclined surfaces 20a and 20b upwardly from the point 19 abutting the frame 240. After matching the hole 12a provided in the lever 12 with the pinhole 15a of the block 15, insert the pin 17, insert the washer 24, and prevent separation from the split pin 26. It is composed.

The block 15 is provided with support pieces 28a and 28b protruding forward and backward, respectively, and the support pieces 28a and 28b are provided with screw holes, and the adjustment holes are provided with the screw holes. 30a and 30b have a screwed structure. The adjustment bolts 30a and 30b are for adjusting the inclination angle of the lever 12. The downward fixing angle of the lever 12 is adjusted by the bolt 30b, and the upward fixing angle is adjusted by the bolt 30a. As a result, a stroke in which the tip of the lever 12 is raised and lowered sufficiently up and down is made.

In addition, the front end of the lever 12 is extended to the pickling tank 200 side, the front end thereof is rotatably connected to the connecting rod 52 of the sampling section 50 to be described later, for this purpose A pin hole 12b is formed at the front end of the 12, and matches it with the hole 52a of the connecting rod 52. Then, the pin 46 is inserted and the washer 47 is inserted into the split pin 48. It has a structure to prevent the departure.

And, the arm 250 of the lifter 230 having a sampling unit 50 having a tube 55 and a piston member 60 installed perpendicular to the bushing portion 252 to be rotatably fitted, The sample collection unit 50 connects the T-shaped nipple 64 and the branch pipe 66 to the hollow piston rod 62 connected to the lower side of the connecting rod 52, the branch pipe 66 is flexible It consists of a hose and is connected to the sample storage unit 120 which will be described later.

In addition, the sampling section 50 is provided with a hollow tube 55, the piston rod 62 is inserted therein from the upper side, as shown in detail in Figure 5a, the tube 55 is The outer surface has a structure installed vertically through the fixing plate 56 to the bushing portion 252.

Therefore, the tube 55 is configured to move up and down as the bushing part 252 of the lifter frame 240 is moved up and down.

And, the inner side of the tube 55 is mounted to the piston member 60 at the lower end of the piston rod 62, the piston member 60 as shown in cross-sectional view in Figure 5b and Figure 6a) Likewise, the hollow piston rod 62 is provided with a piston holder 70 having an upper surface connected thereto, and the piston holder 70 has a space 70a communicating with the hollow sharing path 62a of the piston rod 62. And a compression spring 72 and a ball 74 are built in, and the spring 72 and the ball 74 are each capable of flowing pickling liquid from the piston holder 70 to the piston rod 62 side. In the reverse direction, it acts as a one-way check valve to block the flow of pickling liquid.

In addition, the piston packing 80 is sequentially connected to the lower side of the piston holder 70, the piston packing 80 is provided with a hollow space therein, the compression spring 82 to the space And a spool 84 are built in, and the spool 84 has push bars 86a and 86b projecting from the upper and lower sides thereof, respectively. In addition, the spring 82 is configured to elastically support the spool 84 downward with respect to the piston holder (70).

In addition, the piston packing 80 is formed with a step 88 in the space is configured so that the spool 84 is not separated to the outside.

The piston rod (62), the piston holder (70), and the piston member (60) having the piston packing (80) insert a bolt (90) through the holes (89) formed in the longitudinal direction along their outer circumferential surface. Then, it is fixed by the nut 92 to form one member.

In addition, the lower side of the piston member 60, the tube head cover 95 is disposed in the lower portion of the tube 55, and the suction pipe 112 of the suction unit 110 to be described later will be connected, The tube head cover 95 has a disc structure in which a hole 95a is formed in the center, and the disc has a plurality of operating pieces 97 arranged in the radial direction of the hole 95a. The disk is rotatably mounted via a bracket 99 and pins (not shown), respectively.

In addition, one end of the operating piece 97 is mounted so that the upper end of the push bar 103 is rotatable through the pin 105 at the center of the hole 95a, and the spring 107 is attached to the push bar 103. Is inserted to support the diameter-expanded head 103a of the push bar 103 downwardly with respect to the disc.

In addition, the suction pipe 112 of the suction unit 110 mounted at the lower end of the tube 55, that is, the lower side of the tube head cover 95 as a bolt 109, has a lower end of the pickling tank 200. It extends inside to be immersed in hydrochloric acid, the upper end of which forms an enlarged portion 115, thereby forming a space in which the push bar 103 of the tube head cover 95 is located.

Therefore, the suction pipe 112 is a tube 55 from the suction pipe 112, the space of the diameter expansion section 115 interacts with the push bar 103 and the spring 107 of the tube head cover 95 It is to act as a one-way check valve to allow the flow of the hydrochloric acid to the inside of, and to prevent the flow of the hydrochloric acid to the opposite side, that is, the tube 55 from the suction pipe 112 side.

On the other hand, the sample storage unit 120 is connected to the piston rod 62 through the branch pipe 66, as shown in detail in Figure 5 and 6, the reservoir pipe 66 is connected to the upper side ( 122, a return pipe 125 for returning the hydrochloric acid solution to the pickling tank 200 through the valve 125a is connected to one side of the reservoir 122, and the valve (to the other side of the reservoir 122) It has a structure in which the discharge pipe 127 is formed to move the hydrochloric acid solution to the sample container 130 through 127a).

In addition, the upper side of the reservoir 122 has a structure in which an overflow line 132 connected to the pickling tank 200 is mounted.

Hereinafter, the operation and effect according to the present invention will be described in detail with reference to FIG. First, in the standby state as shown in FIG. 6A), the remaining amount drain valve 125a and the valve 127a for containing the sample container 130 are closed. In addition, the tube 55 is connected to the arm bushing portion 252 of the strip lifter 230 through the fixing plate 56, so that the lifting cylinder 242 of the strip lifter 230 moves up and down as the tube ( 55 is raised and lowered, and the piston member 60 located therein is fixed through the piston rod 62.

At this time, the spool 84 in the piston member 60 is lowered by the spring 82 in a free state, and the ball 74 also closes the conduit by the elasticity of the spring 72. However, the lower projection bar 86b of the spool 84 holds the operating piece 97 horizontally by pressing both sides of the operating piece 97 on the lower surface of the piston member 60, so that the operating piece ( The push bar 103 connected to the other end of the 97 is raised while compressing the spring 107 to raise the lower protruding bar 86b of the spool 84, which is through the upper protruding bar 86a. The ball 74 is pushed up and eventually the inner flow path of the piston member 60 and the hollow flow path 62 of the piston rod 62 are kept open to communicate with each other.

In this state, as shown in FIG. 6B), when the lifting cylinder 242 of the strip lifter 230 is operated to lower the arm 250, and thus the tube 55 is lowered, the piston Since the member 60 is fixed, suction force is generated inside the tube 55, which lowers the spool 84 and the ball 74 to block the flow paths, respectively, and the push bar 103 As the spring 107 is compressed and opened by the suction force, hydrochloric acid is sucked by the inner space volume of the tube 55.

In this state, when the lifting cylinder 242 of the strip lifter 230 is operated to raise the arm 250, it is raised as opposed to the tube 55, as shown in FIG. 6C. In addition, since the inner piston member 60 is in a fixed position, an expansion force is generated inside the tube 55 so that the push bar 103 closes the pipe of the suction pipe 112 by the expansion force of the spring 107. The ball 74 and the spool 84 in the piston member 60 are automatically opened by the pressure in the tube 55 and discharge is performed.

As a result, the discharged hydrochloric acid enters the temporary storage tank 122 through the flexible hose of the branch pipe 66, and the air in the storage tank 122 and the branch pipe 66 is pickled through the overflow pipe 132. ) To drain. As a result, a sample of the hydrochloric acid solution 210 is automatically collected by the lifting and lowering operation of the strip lifter 230, and the hydrochloric acid solution thus obtained is contained in the sample storage container 130 by opening the valve 127a. The residual hydrochloric acid 210 is drained to the pickling tank 200 through the valve 125a.

In addition, it is important to remove residual hydrochloric acid in the piston rod 62, tube 55 and suction tube 112 for the accuracy of the next hydrochloric acid sample. To this end, when the tube 55 is completed ascending in the state where the piston member 60 is fixed, as shown in FIG. 6D, the bottom surface of the piston member 60 presses both ends of the operating piece 97. As a result, the push bar 103 is raised to open and the center portion is raised to raise the spool 84, thereby pushing the ball 74 upward.

As a result, all the conduits in the tube 55 are opened, and since the residual hydrochloric acid drain valve 125a is opened, the residual hydrochloric acid in the tube 55 is completely drained until the next sample is taken, so that the hydrochloric acid sample is removed in the next step. It can be accurately collected.

As described above, according to the present invention, the hydrochloric acid solution sample for the hydrochloric acid pickling process of the strip is automatically collected without the operator's manual work so that the components of the hydrochloric acid solution 210 in the pickling tank 200 are continuously and constant. Management is extremely easy.

Thus, there is an advantage in improving the reliability of the pickling operation of the strip, which in turn improves the quality of the strip product. In addition, in the process of collecting a sample of hydrochloric acid by a conventional worker, it prevents safety accidents such as inhalation of a toxic gas by a high temperature hydrochloric acid, burns, etc. It is possible to proceed with the liquid sampling operation to obtain an excellent effect of performing a more smooth strip hydrochloric acid sample analysis operation.

Claims (6)

In the device for automatically sampling the hydrochloric acid solution 210 in the pickling tank 200 in the pickling process of the strip, A piston rod fixing part (10) having a lever (12) installed on one side of the pickling tank (200) to be inclined upward and downward at an angle on the frame (240) of the strip lifter (230); The arm 250 of the lifter 230 is positioned in the tube 55 and the hollow tube 55 which is installed vertically integrally through the fixing plate 56 in the bushing portion 252 to be rotatably fitted. A sampling member 50 having an upper end thereof with a piston member 60 fixed to the lever 12, and having one-way check valves mounted on upper and lower ends of the tube 55, respectively; A suction unit 110 connected below the tube 55 of the sampling unit 50; and, A strip lifter of a strip pickling bath comprising: a sample reservoir (120) having a reservoir (122) connected to the branch pipe (66) of the piston rod (62) of the sample (50); Hydrochloric acid automatic sampling device. According to claim 1, The piston rod fixing portion 10 is fixed to the inclination angle adjusting block 15 of the lever 12 by welding on the upper portion of the lift frame 240, the lower side of the block 15 is long One side of the lever 12 is rotatably mounted, and the lever 12 is rotatably mounted to the block 15 via a pin 17, the lower surface of which is in contact with the frame 240. ) Are formed upwardly from the inclined surfaces 20a and 20b, and the block 15 is provided with support pieces 28a and 28b protruding forward and backward, respectively, and the support pieces 28a and 28b. Automatic sampling device for hydrochloric acid using a strip lifter of strip pickling bath, characterized in that the adjustment bolts (30a, 30b) for adjusting the inclination angle of the lever 12 is provided According to claim 1, wherein the sampling unit 50 is mounted to the piston member 60 at the lower end of the piston rod 62 inside the tube 55, the piston member 60 is a hollow piston The rod 62 is provided with a piston holder 70 having an upper surface thereof connected thereto, and the piston holder 70 has a space 70a communicating with the hollow sharing path 62a of the piston rod 62 to form a compression spring. A 72 and a ball 74 are built in, and the spring 72 and the ball 74 are each capable of flowing pickling liquid from the piston holder 70 to the piston rod 62, and in the opposite direction, Automatic hydrochloric acid sampling device using strip lifter of strip pickling tank, which acts as a one-way check valve to block the flow of washing liquid. 4. The disc of claim 3, wherein a tube head cover 95 is disposed below the tube 55 at a lower side of the piston member 60, and the tube head cover 95 has a hole 95a formed at the center thereof. The disk is provided with a plurality of working pieces 97 arranged in the radial direction of the hole 95a, and the working pieces 97 are rotatably mounted to the disk, respectively, and the working piece 97 One end of the push bar 103 is rotatably mounted through the pin 105 at the center of the hole 95a, and the push bar 103 is fitted with a spring 107 to press against the disc. The suction tube 112 having the diameter expanding portion 115 is disposed at the lower end of the tube 55 and downwardly supporting the diameter expanding head 103a of the bar 103. The space interacts with the push bar 103 and the spring 107 of the tube head cover 95 from the suction pipe 112. The strip 55 is characterized in that it acts as a one-way check valve to allow the flow of the hydrochloric acid on the inside of the tube 55, on the other side, that is to prevent the flow of the hydrochloric acid from the tube 55 to the suction pipe 112 side Automatic sampling device for hydrochloric acid using strip picker of pickling bath. According to claim 1, The sample reservoir 120 has a reservoir 122 to which the branch pipe 66 is connected to the upper side, the hydrochloric acid solution through the valve (125a) to one side of the reservoir 122 A return pipe 125 for returning to the pickling tank 200 is connected, and a discharge pipe 127 for moving the hydrochloric acid solution to the sample container 130 through the valve 127a is formed at the other side of the reservoir 122. The hydrochloric acid automatic sampling device using a strip lifter of the strip pickling tank, characterized in that the upper side of the reservoir 122 has a structure that is equipped with an overflow line (132) connected to the pickling tank (200). The arm bushing part 252 of claim 1, wherein the sampling part 50 is moved up and down by the piston member 60 connected to the fixed frame 240 of the strip lifter 230 and the lifting cylinder 242. By using a tube 55 connected to the fixing plate 56 to the pump) by using the operation source of the lifting and lowering of the lifting cylinder 242 provided in the strip lifter 230, without using a separate operation source Automatic sampling device for hydrochloric acid using a strip lifter of strip pickling bath.