CN218026364U - Steel pipe pickling internal circulation device - Google Patents

Abstract

The utility model discloses a steel pipe pickling internal circulation device, which comprises a pickling tank, a mounting bracket arranged above the pickling tank and a steel pipe limit frame that can be immersed in the pickling tank, and a piston is vertically installed in the middle of the mounting bracket The limit frame lifting cylinder with the rod end set downwards, the end of the piston rod of the limit frame lifting cylinder is fixedly installed on the steel pipe limit frame, a sliding groove is opened on the mounting bracket, and a horizontally movable high-pressure cylinder is installed vertically in the pickling tank. The air outlet pipe, the high-pressure air outlet pipe is vertically opened with multiple air outlet pipes relative to the direction of the steel pipe limit frame, the upper end of the high-pressure air outlet pipe is extended and installed in the sliding groove, and the side of the high-pressure air outlet pipe is provided with a pipe with the end of the piston rod facing the high-pressure air outlet pipe Drive the cylinder, and the end of the piston rod of the air pipe driving cylinder is fixedly installed on the side of the high-pressure air outlet pipe, and the top of the high-pressure air outlet pipe is connected with a high-pressure air inlet pipe. The utility model further improves the pickling effect and pickling efficiency, and at the same time improves the pickling effect on the outer wall of the seamless steel pipe.

Description

Steel pipe pickling internal circulation device

technical field

The utility model relates to the technical field of pickling devices, in particular to a steel pipe pickling internal circulation device.

Background technique

Pickling is an indispensable process in the production process of seamless steel pipes. It uses acid solution to remove scale and rust on the inner and outer surfaces of steel pipes, so that the subsequent processing steps can be better completed and better quality can be obtained. For finished steel pipes, the conventional pickling of seamless steel pipes is simply to hang the steel pipes into the pickling pool, and add acid solution to the pickling pool for soaking and pickling. , because the pickling time should not be too long, and at the same time, the acid liquid inside the steel pipe is difficult to convectively exchange with the external acid liquid, which will affect the pickling effect inside the steel pipe. Therefore, how to provide a steel pipe pickling internal circulation device is an urgent problem to be solved by those skilled in the art.

Utility model content

One purpose of the utility model is to propose a steel pipe pickling internal circulation device. The utility model inserts the seamless steel pipe through high-pressure air, so that the acid solution forms a high-pressure cycle flushing in the pickling tank, which improves the contact effect between the acid solution and the pipe wall, and further The pickling effect and pickling efficiency are improved, and the pickling effect on the outer wall of the seamless steel pipe is improved at the same time.

A steel pipe pickling internal circulation device according to an embodiment of the present invention comprises a pickling tank, a mounting bracket arranged above the pickling tank, and a steel pipe limit frame that can be immersed in the pickling tank, and the middle part of the mounting bracket is vertical Directly installed with a limit frame lifting cylinder with the piston rod end downwards, the piston rod end of the limit frame lifting cylinder is fixedly installed on the steel pipe limit frame, a sliding groove is opened on the mounting bracket, and the pickling A horizontally movable high-pressure air outlet pipe is vertically arranged in the pool. The high-pressure air outlet pipe is vertically provided with a plurality of air outlet pipe ports relative to the steel pipe limit frame. The upper end of the high-pressure air outlet pipe is extended and installed in the sliding groove. On the side of the air outlet pipe, there is an air pipe drive cylinder with the piston rod end facing the high pressure air outlet pipe. The top of the trachea is connected with a high-pressure air intake pipe.

Preferably, the steel pipe limit frame includes two installation splints and a connecting rod for connecting the installation splints, and a plurality of steel pipe sleeves arranged in an array are installed on the installation splints.

Preferably, a circulation outlet pipe is installed on the bottom side of the pickling tank, the other end of the circulation outlet pipe is connected and installed at the liquid inlet port of the acid filter box, and the outlet port of the acid solution filter box is connected and installed There is a circulating liquid inlet pipe, and the liquid outlet port of the circulating liquid inlet pipe is arranged above the pickling pool.

Preferably, the acid filter box includes a box body, and a filter screen is installed in the box body.

Preferably, the filter is an electromagnetic filter.

Preferably, a discharge pump is flange-mounted on both the circulating liquid outlet pipe and the circulating liquid inlet pipe.

Preferably, the outer sleeve of the high-pressure air outlet pipe located in the sliding groove is provided with a slider matching the sliding groove.

Preferably, an air pump is installed on the upper flange of the high-pressure air outlet pipe.

The beneficial effects of the utility model are:

(1) The utility model inserts the seamless steel pipe through high-pressure air, so that the acid liquid forms a high-pressure circular flushing in the pickling pool, improves the contact effect between the acid liquid and the pipe wall, further improves the pickling effect and pickling efficiency, and simultaneously improves Pickling effect on the outer wall of seamless steel pipe;

(2) The utility model can filter and absorb the uncorroded large pieces of rust in the acid liquid through the electromagnetic filter screen in the acid liquid filter box, and collect the rust to prevent a large amount of rust from entering the acid liquid again when the acid liquid circulates. The effect of the subsequent pickling in the washing pool is effectively improved, and the quality of the acid solution in the acid solution cycle is effectively improved when the stainless steel pipe is acidified.

Description of drawings

In the attached picture:

Fig. 1 is the structural representation of steel pipe pickling internal circulation device that the utility model proposes;

Fig. 2 is the structural representation of the steel pipe limit frame in the steel pipe pickling internal circulation device proposed by the utility model;

Fig. 3 is the structural representation of the high-pressure air outlet pipe in the steel pipe pickling internal circulation device proposed by the utility model;

Fig. 4 is a structural schematic diagram of the acid liquid filter box in the steel pipe pickling internal circulation device proposed by the utility model.

In the figure: 1-pickling tank, 2-steel steel limit frame, 21-installation splint, 22-connecting rod, 23-steel pipe sleeve, 3-seamless steel pipe, 4-installation bracket, 5-limiting frame lifting cylinder , 6-tracheal drive cylinder, 7-high-pressure intake pipe, 8-high-pressure outlet pipe, 9-acid liquid filter box, 91-cabinet, 92-filter, 10-sliding groove, 11-slider, 12-outlet pipe Port, 13-circulation liquid outlet pipe, 14-circulation liquid inlet pipe.

detailed description

Now in conjunction with accompanying drawing, the utility model is described in further detail. Referring to Figures 1-4, a steel pipe pickling internal circulation device, a steel pipe pickling internal circulation device, includes a pickling tank 1, a mounting bracket 4 arranged above the pickling tank 1 and a The steel pipe limit frame 2, the middle part of the mounting bracket 4 is vertically installed with the limit frame lifting cylinder 5 with the piston rod end downwardly arranged, the limit frame lifting cylinder 5 piston rod ends are fixedly installed on the steel pipe limit frame 2, and the mounting bracket 4 is provided with a slide groove 10, and a horizontally movable high-pressure air outlet pipe 8 is vertically arranged in the pickling tank 1, and a plurality of air outlet pipe ports 12 are vertically opened in the direction of the high-pressure air outlet pipe 8 relative to the steel pipe limit frame 2. The upper end of the air pipe 8 is extended and installed in the sliding groove 10. The high-pressure air outlet pipe 8 located in the sliding groove 10 is covered with a slider 11 matching the sliding groove 10. The side of the high-pressure air outlet pipe 8 is provided with a piston rod end facing the high-pressure outlet. The trachea drive cylinder 6 provided by the trachea 8 is fixedly mounted on the side of the high pressure outlet pipe 8 at the end of the piston rod of the trachea drive cylinder 8, and is used to drive the horizontal movement of the high pressure outlet pipe 8. The top of the high pressure outlet pipe 8 is connected with a high pressure inlet pipe 7.

The steel pipe limit frame 2 includes two installation splints 21 and a connecting rod 22 for connecting the installation splints 21. The installation splint 21 is equipped with a plurality of steel pipe sleeves 23 arranged in an array, and the steel pipe sleeves 23 are screw-mounted on the installation splint 21. At the same time, the seamless steel pipes 3 with different diameters can be installed and fixed by changing the inner diameter of the steel pipe sleeve 23 .

A circulation outlet pipe 13 is installed on the bottom side of the pickling pool 1, and the other end of the circulation outlet pipe 13 is connected and installed at the inlet port of the acid filter box 9, and the outlet port of the acid filter box 9 is connected with a circulation inlet port. The pipe 14 and the outlet port of the circulating liquid inlet pipe 14 are arranged above the pickling tank 1 .

The acid filter box 9 comprises a casing 91, and a filter screen 92 is installed in the casing 91. In the present embodiment, the filter screen 92 is an electromagnetic filter screen 92, and the electromagnetic filter screen 92 can remove the large piece of rust that is not completely corroded in the acid solution. Filtration and adsorption to collect rust to prevent a large amount of rust from re-entering the pickling tank 1 during acid circulation to affect the effect of subsequent pickling, effectively improving the quality of acid in the acid circulation of stainless steel pipes .

Discharge pumps are flange-mounted on the circulating liquid outlet pipe 13 and the circulating liquid inlet pipe 14. In this embodiment, the unloading pumps are self-priming acid and alkali resistant explosion-proof sulfuric acid discharge pumps.

The flange on the high-pressure air outlet pipe 8 is equipped with an air pump. In this embodiment, the air pump can increase the air pressure of the high-pressure air inlet pipe 7 to 2-5 times. It only needs to use the air in the high-pressure air inlet pipe 7 as an air source. The intake pipe 7 is a deformable bellows.

It can be understood that the driving mode of the air pump, unloading pump, limit frame lifting cylinder 5, and air pipe driving cylinder 6 in the utility model can be driven by an external power line, and the air pump, unloading pump, limit The control of the frame lifting cylinder 5 and the air pipe driving cylinder 6 can be programmed and controlled by the main control system, and its control principle can be realized by the existing control technology. The models of air pump, discharge pump, spacer frame lifting cylinder 5, air pipe drive cylinder 6 are not limited to a single type and can be existing types suitable for the utility model on the market.

Working principle: install the seamless steel pipe 3 to be pickled in the steel pipe sleeve 23 on the steel pipe limiter 2, lift the cylinder 5 by starting the limiter, immerse the steel limiter 2 into the pickling pool 1, and start The air pipe drives the cylinder 6 to move the high-pressure air outlet pipe 8 toward the seamless steel pipe 3, and the outlet pipe mouth 12 is sequentially moved and inserted into the seamless steel pipe 3, and the high-pressure air blown out through the air outlet pipe mouth 12 performs high-pressure flushing on the inner wall of the seamless steel pipe 3, At the same time, the high pressure makes the acid liquid circulate and convect in the pickling tank 1, which improves the cleaning effect on the outer wall of the seamless steel pipe 3. At the same time, the acid liquid after pickling can be filtered by the acid liquid filter box 9 to clean the seamless steel pipe 3. Multiple times of pickling can reduce the cost of pickling without reducing the pickling effect.

The utility model inserts the seamless steel pipe 3 through high-pressure air, so that the acid liquid forms a high-pressure circular flushing in the pickling pool 1, improves the contact effect between the acid liquid and the pipe wall, further improves the pickling effect and pickling efficiency, and simultaneously improves For the pickling effect on the outer wall of the seamless steel pipe 3, the uncorroded large pieces of rust in the acid liquid can be filtered and adsorbed through the electromagnetic filter screen 92 in the acid liquid filter box 9, and the rust is collected to prevent the acid liquid from circulating When a large amount of rust enters the pickling tank 1 again, the effect of subsequent pickling is affected, and the quality of the acid solution in the acid solution cycle is effectively improved when the stainless steel pipe is acidified.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (8)

1. The utility model provides a steel pipe pickling inner loop device, a serial communication port, including the pickling bath, set up the installing support and can dip in the pickling bath top steel pipe spacing in the pickling bath, the vertical spacing lifting cylinder who installs the downward setting of tailpiece of the piston rod end in installing support middle part, spacing lifting cylinder tailpiece of the piston rod end fixed mounting is on the spacing of steel pipe, the sliding tray has been seted up on the installing support, but the vertical high-pressure outlet duct that is provided with horizontal migration in the pickling bath, the relative spacing orientation of steel pipe of high-pressure outlet duct has vertically seted up a plurality of mouths of giving vent to anger, high-pressure outlet duct upper end extension is installed in the sliding tray, high-pressure outlet duct side is provided with the trachea actuation cylinder that the tailpiece of the piston rod end set up towards high-pressure outlet duct, trachea actuation cylinder tailpiece of the piston rod end fixed mounting is in the high-pressure outlet duct side for drive high-pressure outlet duct's horizontal migration, the high-pressure outlet duct top is connected with high-pressure intake pipe.

2. The steel pipe pickling internal circulation device of claim 1, wherein the steel pipe limiting frame comprises two mounting clamping plates and a connecting rod for connecting the mounting clamping plates, and a plurality of steel pipe sleeves arranged in an array are mounted on the mounting clamping plates.

3. The steel pipe acid washing internal circulation device as claimed in claim 1, wherein a circulation liquid outlet pipe is installed at the bottom side of the acid washing tank, the other end of the circulation liquid outlet pipe is installed at the liquid inlet port of the acid liquid filtering tank in a communicating manner, a circulation liquid inlet pipe is installed at the liquid outlet port of the acid liquid filtering tank in a communicating manner, and the liquid outlet port of the circulation liquid inlet pipe is arranged above the acid washing tank.

4. The steel pipe pickling internal circulation device of claim 3, wherein the acid liquor filtering tank comprises a tank body, and a filter screen is installed in the tank body.

5. The steel pipe pickling internal circulation device of claim 4, wherein the filter screen is an electromagnetic filter screen.

6. The steel pipe pickling internal circulation device of claim 3, wherein each of the circulating liquid outlet pipe and the circulating liquid inlet pipe is provided with a discharging pump in a flange mode.

7. The steel pipe pickling internal circulation device according to claim 1, wherein a sliding block matched with the sliding groove is sleeved outside the high-pressure gas outlet pipe in the sliding groove.

8. The steel pipe pickling internal circulation device of claim 1, wherein an air pump is mounted on a flange on the high-pressure gas outlet pipe.

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