Cut-off pickling tank with profiling holes

Abstract

The utility model relates to a cut-off pickling tank with profiling holes, and belongs to the technical field of pickling equipment for oxide scale on the surface of a sectional material. According to the technical scheme, a tank cover (5) covers the upper portion of a tank body (3), and the upper portion of the tank body (3) is sealed; a plurality of transmission rubber rollers (9) and a profiling hole intercepting plate (1) are arranged in the groove body (3) in the running direction of workpieces (11), a plurality of profiling grooves are formed in the outer rings of the transmission rubber rollers (9) in the axial direction of the transmission rubber rollers (9), the workpieces (11) are placed in the profiling grooves, and the transmission rubber rollers (9) rotate so as to drive the workpieces (11) to shuttle and be cleaned in acid liquor in the groove body (3). The groove walls on the two sides of the groove body and the profiling hole intercepting plate are each provided with a profiling hole matched with a workpiece in appearance. According to the acid pickling device, the acid pickling effect of a workpiece is achieved, acid mist can be prevented from overflowing to the outside, the purposes of improving the working environment and reducing production consumption are achieved, the structure is relatively simple, and practicability is high.

Description

Technical Field

[0001] The utility model relates to a cut-off pickling tank with a profile hole, belonging to the technical field of pickling equipment for iron oxide scale on the surface of profiles. Background Art

[0002] At present, the pickling equipment in the profile galvanizing industry is mainly a number of pit-type pickling tanks, in which the workpieces are immersed in the tanks for pickling in turn. Such pickling tanks have a huge open area and no independent seal. During the pickling operation, especially when the ambient temperature is low and the acid needs to be heated, a large amount of acid mist evaporates, and the acid mist permeates the pickling area. The on-site environment is harsh, which has an adverse effect on the external environment and the health of the operators. At the same time, the volatile acid mist cannot be recovered, resulting in waste. The amount of volatility also directly affects the production cost. Utility Model Content

[0003] The utility model aims to provide a intercepting pickling tank with a profiled hole, which avoids the disadvantages of the existing pickling tank having a large open area, a bad working environment caused by the volatilized acid mist, and adverse physical and mental health of the operators, reduces the volatilization amount of the acid mist and improves the working environment, and solves the above-mentioned problems existing in the background technology.

[0004] The technical solution of the utility model is:

[0005] A intercepting pickling tank with a contoured hole comprises a contoured hole intercepting plate, a tank body, a tank cover and a transmission rubber roller, wherein the tank cover is closed on the top of the tank body to seal the top of the tank body; a plurality of transmission rubber rollers and contoured hole intercepting plates are arranged inside the tank body along the running direction of the workpiece, a plurality of contoured grooves are arranged on the outer ring of the transmission rubber roller along its axial direction, the workpiece is placed in the contoured groove, and the transmission rubber roller rotates to drive the workpiece to shuttle through the acid liquid inside the tank body for cleaning, and contoured holes matching the shape of the workpiece are arranged on the two side walls of the tank body and the contoured hole intercepting plate, and the contoured holes can allow the workpiece to pass through.

[0006] Furthermore, a plurality of contoured hole intercepting plates are respectively arranged in parallel at both ends of the trough body.

[0007] Furthermore, a water sealing groove is provided around the upper edge of the groove body, and the bottom of the groove cover is located in the water sealing groove.

[0008] Furthermore, a mist exhaust port is provided on the tank cover.

[0009] Furthermore, a liquid inlet and a liquid outlet are provided at the bottom of the tank body.

[0010] Furthermore, a water sealing groove drain pipe is provided on the water sealing groove.

[0011] Furthermore, the transmission rubber roller is connected to a transmission motor reducer, and the transmission motor reducer is installed on a reducer bracket.

[0012] Furthermore, the junction between the transmission rubber roller and the tank body is sealed by a packing sealing structure.

[0013] Furthermore, the groove walls on both sides of the groove body and the contoured holes on the contoured hole intercepting plate are arranged parallel to each other, and their center lines coincide with each other.

[0014] The utility model changes the original method of immersing multi-layer workpieces in the pickling tank into a method of conveying single-layer workpieces through rollers, which moves longitudinally from one end of the pickling tank to shuttle through the acid solution for cleaning, and then passes out of the pickling tank from the other end to complete the entire pickling process. Different from the traditional open-top pickling tank, the pickling tank of the utility model has a closed top, and the workpieces enter and pass through the contoured holes on the tank walls on both sides of the tank body. Multiple contoured hole intercepting plates are respectively arranged on both sides of the tank body. Contoured holes that are consistent with the shape of the workpiece and slightly larger in size are opened on the contoured hole intercepting plates to ensure the smooth passage of the workpiece. At the same time, the multiple contoured hole intercepting plates also greatly reduce the exposure area of ​​the acid solution in the pickling tank to the outside world. The tank cover is provided with a mist exhaust port, which is connected to the acid mist recovery device, so that a certain micro-negative pressure is formed inside the pickling tank, which prevents the acid mist from overflowing from the contoured holes on the tank walls on both sides of the pickling tank, and also recovers and reuses part of the acid mist.

[0015] Multiple workpieces arranged side by side are transported to the interception pickling tank by the conveying mechanism, enter the tank from the profiling holes on the tank wall on one side of the tank, and move forward longitudinally through the transmission rubber roller. When passing through the profiling hole intercepting plate, the profiling holes on the profiling hole intercepting plate are just enough for the workpieces to pass through. After the workpieces are cleaned in the acid solution (such as hydrochloric acid solution) inside the tank, they pass out through the profiling holes on the tank wall on the other side of the tank and are transported to the next process flow through the conveying mechanism. A reflux tank is provided outside the pickling tank, and a small amount of acid overflowing from the profiling holes on the tank walls on both sides of the tank is recovered through the reflux tank and the reflux pipe and then re-enters the pickling tank to form an acid circulation system.

[0016] The positive effects of the utility model are: it can not only meet the pickling effect of the workpiece but also avoid the overflow of acid mist to the outside, thereby achieving the purpose of improving the working environment and reducing production consumption, and the structure is relatively simple and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a plan view of the utility model;

[0018] Figure 2 yes Figure 1 AA section view;

[0019] Figure 3 It is the front view of the utility model;

[0020] Figure 4 It is a front view of the contoured hole cutoff plate of serial number 1;

[0021] Figure 5 yes Figure 4 BB cross-sectional view;

[0022] In the figure: 1. contoured hole intercepting plate, 2. liquid inlet, 3. tank body, 4. mist outlet, 5. tank cover, 6. water sealing tank, 7. transmission motor reducer, 8. reducer bracket, 9. transmission rubber roller, 10. liquid inlet flange, 11. workpiece, 12. water sealing tank drain pipe, 13. drain outlet, 14. drain outlet flange, 15. contoured hole. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] See attached Figure 1-5 The present embodiment provides a intercepting pickling tank with a profiling hole, comprising a profiling hole intercepting plate 1, a tank body 3, a tank cover 5, a transmission motor reducer 7 and a transmission rubber roller 9. The tank cover 5 covers the top of the tank body 3 to seal the top of the tank body 3; a plurality of transmission rubber rollers 9 and a profiling hole intercepting plate 1 are respectively arranged inside the tank body 3 along the running direction of the workpiece 11, and a plurality of profiling grooves are arranged on the outer ring of the transmission rubber roller 9 along its axial direction, and the workpiece 11 is placed in the profiling groove. The transmission motor reducer 7 drives the transmission rubber roller 9 to rotate, thereby driving the workpiece 11 to shuttle and clean in the acid solution inside the tank body 3. The groove walls on both sides of the tank body 3 and the profiling hole intercepting plate 1 are provided with profiling holes matching the shape of the workpiece 11, and the profiling holes can allow the workpiece 11 to pass through.

[0025] Preferably, the plurality of contoured hole intercepting plates 1 are respectively arranged in parallel at both ends of the tank body 3. The arrangement of the plurality of contoured hole intercepting plates 1 greatly reduces the exposure area of ​​the acid solution in the pickling tank to the outside world.

[0026] The groove walls on both sides of the groove body 3 and the contoured holes on the contoured hole intercepting plate 1 are arranged parallel to each other, and their center lines coincide with each other.

[0027] Preferably, the upper edge of the tank body 3 is provided with a water sealing groove 6, and the bottom of the tank cover 5 is located in the water sealing groove 6. The tank cover 5 is tightly sealed with the tank body 3 through the water sealing groove 6 to isolate the acid mist from overflowing from the junction of the tank body 3 and the tank cover 5.

[0028] Preferably, the tank cover 5 is provided with a mist outlet 4. The mist outlet 4 is connected to the acid mist recovery device, so that a certain micro-negative pressure is formed inside the pickling tank, which prevents the acid mist from overflowing from the contoured holes on the tank walls on both sides of the pickling tank, and also recovers and reuses part of the acid mist.

[0029] See attached Figure 2 and 3A liquid inlet 2 is provided at the middle position of the bottom of the tank body 3, and two liquid discharge ports 13 are respectively provided at both ends of the bottom of the tank body 3. A liquid inlet flange 10 and a liquid discharge port flange 14 are respectively provided at the liquid inlet 2 and the liquid discharge port 13 for connecting pipelines. The acid enters from the liquid inlet 2 and is discharged from the liquid discharge port 13.

[0030] See attached Figure 3 A water sealing tank drain pipe 12 is provided at the bottom of the water sealing tank 6, and the high-concentration wastewater in the water sealing tank drain pipe 12 is discharged through the water sealing tank drain pipe 12 for replacement.

[0031] See attached Figure 2 The transmission rubber roller 9 is connected to the transmission motor reducer 7, and the transmission motor reducer 7 is installed on the reducer bracket 8. The joint between the transmission rubber roller 9 and the tank body 3 is sealed by a packing sealing structure, and the packing sealing structure is a structure for shaft sealing known in the art.

[0032] In this embodiment, the tank body 3 is a steel rubber lined tank body (with a water seal tank), the tank cover 5 is a PPH pickling tank cover, and the transmission rubber roller 9 is a rubber-coated contoured pickling roller. Both ends of the transmission rubber roller 9 are arranged on the bearings of the transmission roller mounting bracket.

[0033] In this embodiment, five transmission rubber rollers 9 are installed through the tank body 3, and the joints are sealed with packing to prevent the acid from overflowing. Five profiled hole intercepting plates 1 are installed at intervals at both ends of the tank body 3 to reduce the contact area between the end face and the outside world.

[0034] A plurality of workpieces 11 are arranged in sequence on a transmission rubber roller 9 with a profiled groove, and one end of the transmission rubber roller 9 is connected to a transmission motor reducer 7 to provide power. The transmission motor reducer 7 is installed with the bottom plate of the tank body through a reducer bracket 8 to ensure the position accuracy of each transmission rubber roller 9. The top of the tank body 3 is covered by a tank cover 5, and the tank cover 5 is inserted into a water sealing tank 6 on all sides. Clean water is added to the water sealing tank 6 for water sealing. When the acidity of the sealed clean water reaches a certain concentration, the high-concentration wastewater is discharged from the water sealing tank drain pipe 12 for replacement. The mist outlet 4 at the top of the tank cover 5 is connected to the acid mist recovery system to form a certain micro-negative pressure state inside the pickling tank.

[0035] exist Figure 3 As shown, the workpiece 11 is pickled along the workpiece running line A under the conveyance of the multi-pass transmission rubber rollers 9. The acid liquid is pumped in from the liquid inlet 2 and then discharged from the liquid outlet 13 to form a cycle. The acid liquid forms a certain turbulent state in the pickling tank, which increases the scouring of the surface of the workpiece 11 and speeds up the pickling speed.

[0036] exist Figure 4As shown, the area of ​​the contoured holes on the contoured hole intercepting plate 1 is relatively small, leaving only space for the workpiece 11 to pass through, greatly reducing the direct contact area between the pickling tank and the outside world, and the multiple contoured hole intercepting plates 1 installed in parallel and the micro-negative pressure state inside the tank body 3 work together to form a labyrinth sealing device, greatly reducing the overflow of acid mist.

[0037] A reflux groove is arranged outside the pickling tank, and the acid liquid overflowing from the contoured holes on the tank walls on both sides of the tank body 3 is recovered and reused through the reflux groove and the reflux pipeline.

Claims

1. A cut-off pickling tank with a profiled hole, characterized in that: The invention comprises a profile hole intercepting plate (1), a trough body (3), a trough cover (5) and a transmission rubber roller (9), wherein the trough cover (5) covers the top of the trough body (3) to seal the top of the trough body (3); a plurality of transmission rubber rollers (9) and a profile hole intercepting plate (1) are respectively arranged inside the trough body (3) along the running direction of the workpiece (11); a plurality of profile grooves are arranged on the outer ring of the transmission rubber roller (9) along its axial direction, and the workpiece (11) is placed in the profile groove; the transmission rubber roller (9) rotates to drive the workpiece (11) to shuttle through the acid liquid inside the trough body (3) for cleaning; and profile holes (15) matching the shape of the workpiece (11) are arranged on the trough walls on both sides of the trough body (3) and the profile hole intercepting plate (1), and the profile holes (15) can allow the workpiece (11) to pass through.

2. The intercepting pickling tank with profiled holes according to claim 1, characterized in that: The plurality of contoured hole intercepting plates (1) are respectively arranged in parallel at both ends of the tank body (3).

3. A cut-off pickling tank with profiled holes according to claim 1 or 2, characterized in that: The upper edge of the tank body (3) is provided with a water sealing groove (6) around it, and the bottom of the tank cover (5) is located in the water sealing groove (6).

4. The intercepting pickling tank with profiled holes according to claim 3, characterized in that: The slot cover (5) is provided with a mist outlet (4).

5. The intercepting pickling tank with profiled holes according to claim 3, characterized in that: The bottom of the tank body (3) is provided with a liquid inlet (2) and a liquid outlet (13).

6. The intercepting pickling tank with profiled holes according to claim 3, characterized in that: The water sealing groove (6) is provided with a water sealing groove drain pipe (12).

7. The intercepting pickling tank with profiled holes according to claim 3, characterized in that: The transmission rubber roller (9) is connected to the transmission motor reducer (7), and the transmission motor reducer (7) is mounted on a reducer bracket (8).

8. The intercepting pickling tank with profiled holes according to claim 3, characterized in that: The junction between the transmission rubber roller (9) and the tank body (3) is sealed via a packing sealing structure.

9. The intercepting pickling tank with profiled holes according to claim 3, characterized in that: The groove walls on both sides of the groove body (3) and the contoured holes (15) on the contoured hole intercepting plate (1) are arranged parallel to each other.

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