CN211220298U - Seamless stainless steel tube purging device - Google Patents
Seamless stainless steel tube purging device Download PDFInfo
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- CN211220298U CN211220298U CN201921858735.2U CN201921858735U CN211220298U CN 211220298 U CN211220298 U CN 211220298U CN 201921858735 U CN201921858735 U CN 201921858735U CN 211220298 U CN211220298 U CN 211220298U
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Abstract
The utility model discloses a seamless stainless steel pipe purging device, which comprises a high-pressure sand water tank part, a pipeline part, a stainless steel pipe moving workbench part, a structural support, a sand water recycling and recycling part and an electrical control part; the degreasing quality of the seamless stainless steel tube after cold rolling is improved by adopting a sand-water airflow blowing method, the blowing process adopts an early sand-water blowing process and a later air-blowing cleaning process, the early sand-water blowing process adopts high-pressure high-speed rotating sand-water airflow to strongly blow the stainless steel tube, and the later period adopts high-pressure high-speed rotating airflow to strongly clean the stainless steel tube; the problems of scale breaking or pretreatment and incomplete degreasing inside the stainless steel pipe, unstable degreasing quality and hard adhered sundries which are difficult to remove are solved, and the manufacturing quality of the stainless steel pipe is improved.
Description
Technical Field
The utility model relates to a seamless stainless steel pipe blasts device belongs to stainless steel pipeline shaping engineering technical field.
Background
In the process of rolling and forming the stainless steel pipe, the processes of degreasing, heat treatment, straightening, pickling or not and passivation (whether the pickling process is determined by the heat treatment process) are frequently carried out after the seamless stainless steel pipe is cold rolled, and the condition that the cleaning quality in the stainless steel pipe can not meet the requirement is usually existed, and the main performance is as follows: although the degreasing time is about 4 hours, the conditions of incomplete degreasing inside the stainless steel pipe and unstable degreasing quality still exist, meanwhile, part of sundries such as relatively hard grease, dust, metal particles and the like also exist inside the stainless steel pipe, so that the oxide skin of the stainless steel pipe is uneven in the heat treatment process, when a subsequent pickling process is carried out, the pickling and passivating liquid is difficult to completely and thoroughly contact with the surface of the stainless steel, the oxide skin is unevenly removed, and the subsequent pickling effect is poor;
the stainless steel scale phenomenon exists after the seamless stainless steel pipe is cold rolled, the final quality of a finished product can be influenced when the pickling process is not available, the pickling process is difficult to realize, the scale breaking or pretreatment before the pickling can solve the problem and improve the pickling effect, the iron scale in the stainless steel pipe is not easy to remove, the adhered hard impurities are difficult to completely remove by adopting high-speed water or air flow washing, the scale breaking or pretreatment effect is difficult to achieve, the final quality of the stainless steel pipe in the subsequent pickling and passivation process is difficult to improve due to the existence of the hard impurities and the scale breaking or pretreatment difficulty in the stainless steel pipe, and the service performance of a stainless steel pipeline system and the application of the stainless steel pipeline system in a high-quality pipeline system are directly influenced.
At present, the degreasing, heat treatment, straightening, pickling or not and passivation process processes are carried out after the stainless steel pipe is cold rolled, particularly the degreasing and cleaning process is still in a manual stage, the process efficiency is relatively low, the degreasing and cleaning process cannot solve the scale breaking or pretreatment problem and enable the inner surface of the stainless steel to achieve a high and stable cleaning degree, the quality of the subsequent pickling and passivation process is greatly influenced, and the quality and the efficiency of the degreasing and cleaning process in the stainless steel pipe need to be continuously improved by utilizing the currently advanced technical means.
SUMMERY OF THE UTILITY MODEL
For overcoming the not enough of prior art, the utility model provides a seamless nonrust steel pipe blasts device has solved broken scale or the difficult problem of preliminary treatment and the inside incomplete, the unstable and attached debris relatively hard problem that is difficult to the clear away of degreasing quality of nonrust steel pipe, has improved nonrust steel pipe manufacturing quality.
The utility model discloses a following technical scheme realizes:
a seamless stainless steel tube purging device comprises a high-pressure sand water tank part, a pipeline part, a stainless steel tube moving workbench part, a structural support and a sand water recycling and recycling part; the stainless steel pipe moving workbench part comprises a stainless steel pipe workbench, the two sides of the stainless steel pipe moving workbench part are respectively provided with a waiting area for the working procedure and a waiting area for the next working procedure, and the two ends of the stainless steel pipe moving workbench part are respectively provided with a high-pressure sand water tank part, a pipeline part and a sand water recycling and recycling part;
the high-pressure sand water tank part comprises a high-pressure sand water tank, and a sand leading-in device, a water leading-in device, a high-pressure sand water airflow and high-pressure gas replacement leading-out device are arranged on the high-pressure sand water tank;
the stainless steel pipe moving workbench is provided with a stainless steel pipe leading-in mechanical arm, a stainless steel pipe leading-out mechanical arm, a stainless steel pipe air claw mechanism, a stainless steel pipe inserting and extracting mechanism and a stainless steel pipe leading-out mechanical arm.
Preferably, the high-pressure sand water tank is a pressure-bearing tank body with an opening cover at the top, the opening cover is fixedly connected with a switch rod and is connected with one side of the top of the high-pressure sand water tank through a rotating shaft, the rotating shaft is positioned at the joint of the opening cover and the switch rod, and the top of the switch rod is connected with a tank cover pneumatic device;
sand and water are led in when the high-pressure sand water tank is opened, and the water leading-in device is in a mode of controlling leading-in by an electromagnetic valve;
the sand leading-in device is a pneumatic spiral pushing-in device, the water leading-in device comprises a clean water supply pipe, and the sand leading-in device and the water leading-in device are arranged on the opposite sides of the pneumatic device of the tank cover at the top of the high-pressure sand water tank;
the lower part of the high-pressure sand water tank is provided with a high-pressure sand water airflow and high-pressure gas replacement and derivation device, and the high-pressure sand water airflow and high-pressure gas replacement and derivation device comprises a Y-shaped branched pipe fitting, a high-pressure sand water internal spiral thread outlet pipe and an air inlet electromagnetic valve;
the Y-shaped branched pipe fitting comprises a first connector, a second connector and a third connector, the first connector is connected with a high-pressure air supply pipe, the second connector is connected with a high-pressure airflow outlet pipe, and the high-pressure air supply pipe and the high-pressure airflow outlet pipe are both arranged on the side wall of the high-pressure sand water tank and penetrate through the side wall of the high-pressure sand water tank; the third interface is connected with a high-pressure sand water internal spiral thread outlet pipe, the outlet end of the high-pressure sand water internal spiral thread outlet pipe is connected with a butt-joint insertion bell mouth, and the butt-joint insertion bell mouth is connected with a stainless steel pipe.
The air inlet electromagnetic valve connected with a high-pressure air source is respectively connected to two pipe interfaces on the Y-shaped upper side of the Y-shaped branched pipe fitting through a high-pressure air conveying pipe and a high-pressure airflow outlet pipe of the high-pressure sand water tank, one pipe interface on the Y-shaped lower side of the Y-shaped branched pipe fitting is connected with a high-pressure sand water internal spiral outlet pipe, and the foremost end of the high-pressure sand water internal spiral outlet pipe is also provided with a butt-joint insertion horn mouth; the inlet solenoid valve may also be an electro-pneumatic valve.
The center line of the pipe orifice of the spiral outlet pipe in the high-pressure sand water is consistent with the horizontal center line of the clamping piece of the stainless steel pipe air claw mechanism, and the stainless steel pipe can be inserted into the pipe orifice of the spiral outlet pipe in the high-pressure sand water through a butt-joint insertion bell mouth;
the input end of the air inlet electromagnetic valve is connected with a high-pressure air source, and the output ends of the two interlocked ends of the air inlet electromagnetic valve are respectively connected with a high-pressure air source inlet of the high-pressure sand water tank and a pipe joint on the Y-shaped lower side of the Y-shaped branched pipe fitting of the high-pressure sand water tank outlet.
Preferably, the stainless steel pipe leading-in mechanical arm and the stainless steel pipe leading-out mechanical arm are both stainless steel pipe pneumatic rotating mechanical arms and are arranged at the left end and the right end of the same plane on the stainless steel pipe moving workbench, the stainless steel pipe leading-in mechanical arm and the stainless steel pipe leading-out mechanical arm respectively comprise two branch arms, the bottom ends of the two branch arms are connected, and the top ends of the two branch arms are arranged in front of and behind and are both arc-shaped grooves; the central axes of the top ends of the stainless steel pipe leading-in mechanical arm and the top end branch arm of the stainless steel pipe leading-out mechanical arm are coincided;
the stainless steel pipe leading-in mechanical arm and the stainless steel pipe leading-out mechanical arm rotate and swing left and right, the stainless steel pipe leading-in mechanical arm rotates and swings left and right to serve as a leading-in process, the stainless steel pipe leading-out mechanical arm rotates and swings right and left to serve as a leading-out process, a right terminal of the stainless steel pipe leading-in mechanical arm and a left terminal top circular arc groove of the stainless steel pipe leading-out mechanical arm are provided with a coincidence center line in the front-back direction, two branches of the mechanical arm are intersected with each other, the coincidence center line of the two branch top circular arc grooves of the stainless steel pipe leading-in and leading-out mechanical arm in the front-back direction coincides with the center line;
the stainless steel pipe guiding-in robot is used for guiding the stainless steel pipe from the left positioning terminal to the right positioning terminal, namely a stainless steel pipe inserting and extracting operation central line in a rotating and swinging mode, and the stainless steel pipe guiding-out robot is used for guiding the stainless steel pipe from the left positioning terminal, namely the stainless steel pipe inserting and extracting operation central line to the right positioning terminal in a rotating mode.
Preferably, the stainless steel air claw mechanism comprises an air claw cylinder, two clamping pieces and two crossed sliding rods, a sliding block is arranged at the top of the air claw cylinder, the middle parts of the clamping pieces are connected with the crossed sliding rods, sliding grooves are formed in the crossed sliding rods, the sliding block penetrates through the crossed part of the two crossed sliding rods, and the sliding block is matched with the sliding grooves;
the stainless steel pipe air claw mechanism is arranged in the middle of two crossed branches of a stainless steel pipe leading-in mechanical arm and a stainless steel pipe leading-out mechanical arm of a stainless steel pipe moving workbench, a clamping piece of the stainless steel pipe air claw mechanism is two opposite arc-shaped grooves, the front-back direction center line of the two opposite arc-shaped grooves of the clamping piece is completely overlapped with the front-back direction overlapped center line of the arc-shaped grooves at the tops of the two branch mechanical arms of the leading-in mechanical arm and the leading-out mechanical arm, and the stainless steel pipe inserting and extracting operation center line is completely overlapped in height and front-.
Preferably, the stainless steel pipe inserting and extracting mechanism is a front and rear pneumatic displacement mechanism of a stainless steel pipe moving workbench, and the lower part of the stainless steel pipe moving workbench comprises a front and rear displacement horizontal rail and a matched roller mechanism.
Preferably, the high-pressure water introducing device is connected with a water inlet electromagnetic valve, and the high-pressure air supply pipe is connected with an air inlet electromagnetic valve.
The method for purging the seamless stainless steel pipe by using the device adopts a sand-water airflow purging method, and adopts an early sand-water purging process and a later air-blowing cleaning process in the purging process:
in the early stage sand water blast washing process, strong blast washing is carried out on the stainless steel pipe by adopting high-pressure high-speed rotating sand water airflow;
and in the later air-blowing cleaning process, the stainless steel pipe is cleaned strongly by adopting high-pressure high-speed rotating airflow.
The seamless stainless steel tube purging device is controlled by a PLC system and specifically comprises the following steps:
step one, opening a cover of a high-pressure sand water tank by a cover pneumatic device, leading sand into the high-pressure sand water tank by a pneumatic spiral pushing device, leading water into the high-pressure sand water tank by controlling a water inlet electromagnetic valve, wherein the leading-in time is n1 and n2 respectively, and when the Max time of the maximum water inlet leading-in time (n 1 and n 2) is up, closing the high-pressure sand water tank by the cover pneumatic device and keeping the cover in a jacking state;
step two, the stainless steel pipe leading-in mechanical arm leads in a stainless steel pipe from the waiting area of the right side of the working procedure to the center of a clamping piece of the stainless steel pipe gas claw mechanism, and leads in and out of the front central line and the rear central line which are superposed in the middle of two branch mechanical arms of the mechanical arm, two opposite arc-shaped grooves of the clamping piece of the stainless steel pipe gas claw mechanism clamp the stainless steel pipe, and a stainless steel pipe inserting and extracting mechanism pushes the stainless steel pipe forwards to insert into a pipe orifice of a spiral thread outlet pipe in high-pressure sand water through a butt-joint insertion bell mouth;
thirdly, a high-pressure air source is controlled to enter a high-pressure sand water tank through an air inlet electromagnetic valve, high-pressure sand water airflow rotating at a high speed is formed and blown into the stainless steel pipe, strong blowing is carried out on the interior of the stainless steel pipe, then the stainless steel pipe is blown into a sand water recovery tank from the other end of the stainless steel pipe, and recovered sand water liquid is recycled after standing separation;
fourthly, the high-speed high-pressure rotary sand water airflow purging time of the stainless steel pipe is n3, when the n3 time is up, the air inlet electromagnetic valve controls switching, a high-pressure air source is changed from being led into the high-pressure sand water tank to bypass the high-pressure sand water tank, then the high-speed high-pressure rotary airflow cleaning purging stainless steel pipe is directly formed through a Y-shaped branched pipe fitting at the outlet of the high-pressure sand water tank and an internal spiral outlet pipe, and the high-speed high-pressure rotary airflow purging stainless steel pipe is dispersed in the air;
fifthly, the cleaning time of the high-speed high-pressure rotating airflow of the stainless steel pipe is n4, when the time of n4 is up, the air inlet electromagnetic valve is controlled to cut off the input of a high-pressure air source, the stainless steel pipe is backwards drawn out of the high-pressure sand water internal spiral line outlet pipe and is in butt joint with and inserted into the bell mouth by the stainless steel pipe inserting and drawing mechanism, the stainless steel pipe which is blown twice is loosened by two opposite arc-shaped grooves of the stainless steel pipe air claw mechanism clamping piece, and the stainless steel pipe guiding mechanical arm rotates to the right side to guide the stainless;
the high-pressure sand water tank introduces sand water once, the number of the stainless steel pipes which are circularly purged is n5, when the number of the stainless steel pipes which are circularly purged reaches n5, the PLC system opens the high-pressure sand water tank again to introduce sand and water, and when the number of the stainless steel pipes which are circularly purged is less than n5, the performed purging process does not include the process of opening the high-pressure sand water tank to introduce sand and water.
Preferably, the values of n1, n2, n3, n4, n5 are determined by the test procedure purge quality.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model overcomes current degrease and cleaning process can not solve broken scale or the difficult problem of preliminary treatment and make the stainless steel internal surface reach the problem of higher cleanliness factor, the method that high-pressure high-speed rotatory sand and water air current and high-pressure high-speed rotatory gas wash stainless steel intraduct has been adopted, solved broken scale or the difficult problem of preliminary treatment and the inside degrease of stainless steel incomplete, the problem that the degreasing quality is unstable and adhere to debris and be difficult to clear away, make the pickle, the passivation liquid can be comparatively complete, thoroughly with stainless steel surface contact, stainless steel tube manufacturing quality has been improved.
The technological processes of degreasing, heat treatment, straightening, pickling or not and passivation after the seamless stainless steel tube is cold rolled are innovated into the application of the technological processes of degreasing, high-pressure and high-speed sand water airflow blowing, heat treatment, straightening, pickling or not and passivation, so that the degreasing quality after the seamless stainless steel tube is cold rolled is improved, the pretreatment quality before the stainless steel tube is pickled or before a finished product is improved, pickling and passivation liquid can be completely and thoroughly contacted with the inner surface of the stainless steel, and the improvement of the degreasing quality ensures the quality of the subsequent process of cold rolling the seamless stainless steel tube
The method of blasting the inside of the stainless steel pipe by the high-pressure rotating sand water airflow and the high-pressure rotating airflow is adopted, so that the attached hard impurities are easy to remove, the degreasing effect is relatively obvious, the inner surface of the stainless steel can reach higher cleaning degree, and a better process foundation is provided for the subsequent pickling and passivation process;
the automatic process purging process is adopted, so that the stable high-quality state of the stainless steel tube purging process is ensured, and the process quality and efficiency with higher stability are ensured;
the stainless steel pipe purging process and the stainless steel purging device can be more suitable for the requirements of water and humid environment by adopting a pneumatic mode, so that the comprehensive energy consumption of the purging process is relatively low and the environment is protected.
Drawings
FIG. 1 is a flow chart of the process of using the seamless stainless steel tube purging device of the present invention;
FIG. 2 is a schematic structural diagram of a seamless stainless steel tube purging device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a high pressure ladle portion of an embodiment of the invention;
fig. 4 is a schematic view of a stainless steel pipe moving table part according to an embodiment of the present invention.
In the figure: 1-a stainless steel pipe moving workbench, 2-a stainless steel pipe pneumatic leading-in mechanical arm, 3-a stainless steel pipe pneumatic leading-out mechanical arm, 4-a stainless steel pipe air claw mechanism, 5-a stainless steel pipe inserting and extracting mechanism, 6-a stainless steel pipe, 7-a clean water supply pipe, 8-a recycling water supply pipe, 9-a high-pressure air supply pipe, 10-a Y-shaped branched pipe fitting, 11-a high-pressure sand water internal spiral thread outlet pipe, 12-a butt joint insertion bell mouth, 13-a high-pressure sand water tank, 14-an air inlet electromagnetic valve, 15-an air inlet electromagnetic valve, 16-a pneumatic spiral pushing device, 17-a tank cover pneumatic device, 19-a vertical water tank, 20-a sand recovery water tank, 21-a working procedure waiting area, 22-a next working procedure waiting area and 23-a branch arm; 24-an opening cover, 25-a switch rod, 26-a rotating shaft, 27-a high-pressure airflow outlet pipe, 28-an air claw cylinder, 29-a clamping piece, 30-a cross sliding rod, 31-a sliding block, 32-a sliding groove, 101-a first interface, 102-a second interface and 103-a third interface.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the scope of the present invention is not limited to these embodiments, and any changes or equivalent substitutions that do not depart from the spirit of the present invention are intended to be included within the scope of the present invention.
In order to ensure that the high-pressure rotating sand water airflow flushing process achieves stable and higher cleaning degree on the inner surface of stainless steel and reliably solves the problem of scale breaking or pretreatment, ensure that pickling solution and passivation solution can be more completely and thoroughly contacted with the surface of the stainless steel and improve the overall quality and process efficiency of a seamless stainless steel pipe, an automatic purging process is adopted in the stainless steel pipe purging process, and a pneumatic mode is adopted as a main energy supply mode for automatic process control in consideration of the convenience and suitable conditions of high-pressure air source utilization.
The utility model discloses a seamless stainless steel pipe blasts method has adopted two kinds of blasts methods that carry out successively, and the first blast method is adopted high pressure rotatory sand and water air current to blast the stainless steel pipe, and after the first blast method was accomplished in the time limit, the second blast method that begins to adopt was adopted again, and the second blast method is adopted high pressure rotatory air current to blast same root stainless steel pipe, and used sand and water recovery repeated material recycles;
the two kinds of blow-washing methods are switched by adopting a mode that an air inlet electromagnetic valve switches the same high-pressure air source, namely the air inlet electromagnetic valve cuts off the high-pressure air source of the first kind of blow-washing method and simultaneously connects the high-pressure air source of the first kind of blow-washing method, the blow-washing air flows of the two kinds of methods respectively form high-pressure rotating sand water air flow and high-pressure rotating air flow through the same high-pressure sand water internal spiral thread outlet pipe, the high-pressure sand water internal spiral thread outlet pipe is connected with a Y-shaped lower side pipe orifice of the Y-shaped branched pipe fitting in front, the blow-washing air flows of the two kinds of methods are respectively connected with two Y-shaped pipe orifices above the Y-shaped branched pipe fitting, and the outlet end of the high-pressure sand water internal spiral thread;
the high-pressure sand water tank part is a device for providing high-pressure rotating sand water airflow, and comprises a high-pressure sand water tank, a sand and water introducing device, a Y-shaped branched pipe fitting and a high-pressure sand water internal spiral outlet pipe;
the high-pressure sand water tank is a pressure-bearing tank body with an opening cover 24 at the top, the opening cover 24 is fixedly connected with a switch rod 25 and is connected with one side of the top of the high-pressure sand water tank 13 through a rotating shaft 26, the rotating shaft 26 is positioned at the joint of the opening cover 24 and the switch rod 25, and the top of the switch rod 25 is connected with a tank cover pneumatic device 17.
The Y-shaped branched pipe fitting comprises a first connector 101, a second connector 102 and a third connector 103, the first connector 101 is connected with a high-pressure air supply pipe 9, the second connector 102 is connected with a high-pressure airflow outlet pipe 27, and the high-pressure air supply pipe 9 and the high-pressure airflow outlet pipe 27 are both arranged on the side wall of the high-pressure sand water tank 13, penetrate through the side wall of the high-pressure sand water tank and are introduced into the high-pressure sand water tank; the third interface 103 is connected with a high-pressure sand water internal spiral thread outlet pipe 11, the outlet end of the high-pressure sand water internal spiral thread outlet pipe is connected with a butt-joint insertion bell mouth 12, and the butt-joint insertion bell mouth is connected with a stainless steel pipe 6.
Because the high-pressure sand water tank is a pressure-bearing tank body, water, sand and gas need to enter the high-pressure sand water tank to form a high-pressure sand gas mixture, a method of introducing water and sand through an opening at the top of the high-pressure sand water tank and then pressurizing and sealing the water and sand is adopted; the top cover opening and the pressurizing operation of the high-pressure sand water tank are finished by adopting a pneumatic device, sand is introduced by adopting a pneumatic spiral device, and water is controlled by adopting an electromagnetic valve; the high-pressure air source of the high-pressure sand water tank is led in by the same air inlet electromagnetic valve which is switched by two kinds of blow washing methods;
the stainless steel pipe moving worktable part finishes the leading-in of a stainless steel pipe from the waiting area of the working procedure and the insertion of the stainless steel pipe into the spiral thread outlet pipe in the high-pressure sand water, the stainless steel pipe is drawn out from the spiral thread outlet pipe in the high-pressure sand water after the purging process of the stainless steel pipe is finished and is guided to the waiting area of the next working procedure, the stainless steel pipe moving worktable part comprises a stainless steel pipe leading-in mechanical arm, a stainless steel pipe air claw mechanism, a stainless steel pipe inserting and drawing mechanism and a stainless steel pipe leading-out mechanical arm which are all finished by adopting a pneumatic device, and the pneumatic device comprises an air inlet electromagnetic valve, a water filter, a pressure reducing;
the stainless steel air claw mechanism comprises an air claw cylinder 28, two clamping pieces 29 and two crossed sliding rods 30, wherein a sliding block 31 is arranged at the top of the air claw cylinder, the middle parts of the clamping pieces are connected with the crossed sliding rods 30, sliding grooves 32 are formed in the crossed sliding rods, the sliding block penetrates through the crossed part of the two crossed sliding rods, and the sliding block is matched with the sliding grooves;
the pipeline part is mainly a high-pressure gas pipeline, a water supply and recycling water pipeline, the high-pressure gas source adopts a centralized gas source, and the high-pressure gas pipeline is mainly a pipeline part from the high-pressure gas source to the gas inlet electromagnetic valve;
the sand water recovery part comprises a vertical water tank 19 and a sand water recovery tank 20;
the structural support combines the high-pressure sand water tank part, the stainless steel pipe movable workbench part and the sand water recovery part into a whole;
the PLC of the electric control part performs program control to meet the control requirement of the stainless steel pipe purging process.
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given with reference to the accompanying drawings and preferred embodiments of the present invention for the specific embodiments, structures, features and effects thereof according to the present invention.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the method for purging a seamless stainless steel pipe according to the preferred embodiment of the present invention mainly comprises the steps of purging the stainless steel pipe by using high-pressure rotating sand airflow in the early stage and purging the same stainless steel pipe by using high-pressure rotating airflow in the later stage: seamless stainless steel pipe blasts device includes high pressure sand water tank part, pipeline part, stainless steel pipe mobile workbench part, structural support and sand water recovery part, electrical control part, wherein:
fig. 1 is a process flow diagram of a seamless stainless steel tube purging method, wherein,
the method for blasting the stainless steel pipe by adopting high-pressure rotary sand water airflow in the earlier stage is realized by adopting the following modes:
after the sand, water and high-pressure air sources meet the conditions, the PLC system controls a pneumatic device of a tank cover of the high-pressure sand water tank to open the tank cover of the high-pressure sand water tank 13, a pneumatic spiral pushing device 16 guides sand into the high-pressure sand water tank 13, water is also guided into the high-pressure sand water tank under the control of a water inlet electromagnetic valve 15, the guiding time is n1 and n2 respectively, the maximum time values of n1 and n2 are taken, and when the maximum time value is reached, the PLC system controls the pneumatic device of the tank cover to close the high-pressure sand water tank and keep the tank cover in a jacking state;
when the sand water is added into the high-pressure sand water tank, the PLC system controls the stainless steel pipe introduction mechanical arm to rotationally introduce the stainless steel pipe from a waiting area on the right side to the center of the stainless steel pipe air claw mechanism clamping piece and insert the stainless steel pipe to be purged into a central line of a pipe orifice of the spiral thread outlet pipe in the high-pressure sand water, two opposite arc-shaped grooves of the stainless steel pipe air claw mechanism clamping piece clamp the stainless steel pipe to be purged, and the stainless steel pipe insertion and extraction mechanism pushes the stainless steel pipe to be purged forwards and inserts the stainless steel pipe to be purged into the pipe orifice of the spiral thread outlet pipe in the high-pressure sand water through the butt-joint insertion bell mouth;
after the PLC detects that a to-be-blasted pipe orifice inserted into the spiral thread outlet pipe in the high-pressure sand water is inserted, a high-pressure air source enters the high-pressure sand water tank through a high-pressure pipeline through an air inlet electromagnetic valve, the high-pressure air flow entering the high-pressure sand water tank forms strong stirring on the sand water in the tank, after high pressure is quickly formed in the tank, the high-pressure sand water air flow forms high-pressure sand water air flow rotating at high speed to be blasted into the stainless steel pipe after passing through the outlet pipe of the tank body and the pipe orifice of the spiral thread outlet pipe in the high-pressure sand water, the high-pressure sand water air flow rotating at high speed blows the interior of the stainless steel pipe, then the sand water flow is flushed into a sand;
when the high-pressure sand water blow wash time of the stainless steel pipe is n3 and n3 is up, the PLC system changes a high-pressure air source from being led into the high-pressure sand water tank to bypassing the high-pressure sand water tank through an air inlet electromagnetic valve, when the pressure of the high-pressure sand water tank is lower than the pressure of an outlet pipe of the high-pressure sand water tank, the high-pressure sand water airflow flowing out of the high-pressure sand water tank stops, and the high-pressure airflow after being controlled and switched by the air inlet electromagnetic valve directly forms high-speed rotating airflow for cleaning and washing the inside of the stainless steel pipe through a Y-shaped;
the cleaning time of the high-pressure air flow of the stainless steel pipe is n4, when the time of n4 is up, the PLC system controls the input of a cut-off high-pressure air source through an air inlet electromagnetic valve of a high-pressure sand water tank, a stainless steel pipe inserting and extracting mechanism extracts the stainless steel pipe backwards out of a spiral grain outlet pipe in the high-pressure sand water and is in butt joint with the outlet pipe to be inserted into a bell mouth, two opposite arc-shaped grooves of a clamping piece of a stainless steel pipe air claw mechanism loosen the washed stainless steel pipe, and then the stainless steel pipe guiding mechanical arm rotates towards the right side to guide the;
the high-pressure sand water tank has a certain capacity, the sand water amount obtained by one-time stainless steel pipe purging is relatively small, if the high-pressure sand water tank is opened to add one-time sand water after one-time purging, the relative efficiency is reduced, and therefore the number n5 of the stainless steel pipes which can be purged after the sand water is added after the tank is opened every time needs to be set; in addition the utility model discloses a method of the leading-in method of steel pipe is not adopted to let in to the method of jar addition sand water, and one of them reason is that high-pressure sand water jar is inside to have a high pressure, need have suitable and the leading-in switching device of high pressure, and another reason is that the sand water mixture condenses easily after placing a period and blocks up the pipeline, needs often clearance and inspection, and the clearance degree of difficulty can be some big, after considering these reasons that target in place, the utility model discloses a method of the leading-in sand water of jar of opening, the jar body still need repressurize after closing to guarantee process quality.
n1, n2, n3, n4 and n5 need to determine the high-pressure sand water airflow purging quality and the high-pressure airflow purging quality according to the results of the test process, and when the purging quality meets the requirements and the process is economical and reasonable, the required time is the set values of n1, n2, n3, n4 and n 5;
FIG. 2 is a diagram of a seamless stainless steel pipe purging device, wherein the whole purging device comprises a high-pressure sand water tank part, a pipeline part, a stainless steel pipe moving workbench part, a structural support, a sand water recycling and recycling part and an electrical control part, the whole stainless steel pipe purging device is vertically arranged, the high-pressure sand water tank part is arranged at one end and is a water tank which is vertically arranged opposite to the high-pressure sand water tank part, the stainless steel pipe moving workbench part is arranged in the middle of the water tank, the sand water recycling and recycling part is arranged at the other end of the water tank, and the sand water recycling and recycling part mainly comprises standing separation and impurity removal for recycling; the part in the pipe is mainly a high-pressure air pipe, high-pressure air is mainly used as a main energy source of the pneumatic part, a centralized supply mode is adopted, and the pneumatic device is a main power source of the stainless steel pipe purging device;
FIG. 3 is a schematic view of a high pressure sand water tank section; the high-pressure sand water tank is a sand-water airflow device which forms high-pressure high-speed rotation, the high-pressure sand-water tank part comprises a high-pressure sand water tank 13, a sand and water leading-in device and a high-pressure sand-water airflow and high-pressure gas replacement leading-out device, the high-pressure sand-water tank leads in sand, water and high-pressure gas to form a high-pressure mixture of sand, water and gas, the high-pressure sand-water tank leads in sand, adopts a pneumatic spiral conveying device which is a combination of a pneumatic motor and a spiral conveyor, the high-pressure sand-water tank leads in water and is controlled by an electromagnetic valve, a water source is composed of clean water and recycled water, the recycled water is obtained by standing, separating and filtering recycled water, the high-pressure high-speed sand-water airflow is formed at the outlet of the high-pressure sand water tank, and the high-pressure high-speed sand-;
the high-pressure sand water airflow and high-pressure gas replacement guiding device comprises a Y-shaped branched pipe fitting 10, a high-pressure sand water internal spiral thread outlet pipe and an air inlet electromagnetic valve; the Y-shaped branched pipe fitting and the air inlet electromagnetic valve are switching devices of a high-pressure air source, the high-pressure air source is divided into high-pressure high-speed sand water airflow and high-pressure high-speed airflow which are conducted at different time intervals through the air inlet electromagnetic valve, the high-pressure high-speed sand water airflow is formed by adding sand, water and high-pressure air into a high-pressure sand water tank, and the high-pressure high-speed sand water airflow is mainly used for purging impurities in the stainless steel; the high-pressure high-speed airflow does not pass through the high-pressure sand water tank, does not form a mixture with other substances, and mainly plays a role in cleaning the inside of the stainless steel pipe;
the high-pressure high-speed sand-water airflow and the high-pressure high-speed airflow respectively form high-pressure high-speed rotating sand-water airflow and high-pressure high-speed rotating airflow through the Y-shaped branched pipe fitting and the high-pressure sand-water spiral threaded pipe, and the stainless steel pipe is strongly blasted and strongly cleaned at different time intervals;
FIG. 4 is a schematic view of a stainless steel pipe transfer table section that completes the stainless steel pipe introduction, clamping, insertion, extraction, and extraction cycle, and that uses a pneumatic device suitable for the environment, and includes a stainless steel pipe introduction robot, a stainless steel pipe pneumatic gripper mechanism, a stainless steel pipe insertion and extraction mechanism, and a stainless steel pipe extraction robot; the stainless steel pipe leading-in mechanical arm and the stainless steel pipe leading-out mechanical arm adopt the same mechanical structure which swings from right to left pneumatically, the mechanical arm is connected with the cylinder body, and the cylinder pull rod is fixedly connected;
the stainless steel pipe guiding-in mechanical arm, the stainless steel pipe guiding-out mechanical arm and the stainless steel pipe gas claw mechanism have coincident center lines with the same height as the stainless steel pipe at the center of an arc groove at the top of the mechanical arm and the center of a clamping piece of the gas claw mechanism in the process of inserting and extracting the purging gas, the two arms of the stainless steel pipe guiding-in mechanical arm and the stainless steel pipe guiding-out mechanical arm are arranged in a crossed mode, the stainless steel pipe gas claw mechanism is arranged in the middle of the stainless steel pipe guiding-in mechanical arm and the stainless steel pipe guiding-out mechanical arm, one side of the stainless steel pipe inserting and extracting mechanism is connected with the stainless steel pipe;
the pneumatic device is provided with an air inlet electromagnetic valve, a water filter, a pressure reducing valve, an oil atomizer triple piece and the like which are required by a pneumatic circuit.
The utility model discloses a sand water air current blasts the method and improves the degrease quality after seamless stainless steel pipe cold rolling.
The method innovating the traditional technological processes of degreasing, heat treatment, straightening, pickling or not and passivating after cold rolling the seamless stainless steel tube as follows: the degreasing, high-pressure and high-speed sand-water airflow blowing, heat treatment, straightening, pickling or not and passivation process processes of the stainless steel tube not only improve the degreasing quality of the seamless stainless steel tube after cold rolling, but also improve the pretreatment quality of the stainless steel tube before pickling or before finished products, so that pickling and passivation liquid can be completely and thoroughly contacted with the inner surface of the stainless steel tube, and the improvement of the degreasing quality ensures the quality of the subsequent process of the seamless stainless steel tube cold rolling.
The high-pressure sand water tank partially completes the mixing of sand, water and high-pressure gas, the formation of high-pressure high-speed sand water airflow, and the supply and switching of the early-stage high-pressure high-speed sand water airflow and the later-stage high-pressure high-speed airflow in different periods; the stainless steel pipe moving workbench part completes the procedures of leading-in, clamping, inserting, extracting and leading-out of the stainless steel pipe; the process operation adopts a PLC process control and pneumatic mode, and the process sand water is recovered and recycled;
the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A seamless stainless steel tube purging device is characterized by comprising a high-pressure sand water tank part, a pipeline part, a stainless steel tube moving workbench part, a structural support and a sand water recycling and recycling part; the stainless steel pipe moving workbench part comprises a stainless steel pipe workbench, the two sides of the stainless steel pipe moving workbench part are respectively provided with a waiting area for the working procedure and a waiting area for the next working procedure, and the two ends of the stainless steel pipe moving workbench part are respectively provided with a high-pressure sand water tank part, a pipeline part and a sand water recycling and recycling part;
the high-pressure sand water tank part comprises a high-pressure sand water tank, and a sand leading-in device, a water leading-in device, a high-pressure sand water airflow and high-pressure gas replacement leading-out device are arranged on the high-pressure sand water tank;
the stainless steel tube moving workbench is provided with a stainless steel tube leading-in mechanical arm, a stainless steel tube leading-out mechanical arm, a stainless steel tube gas claw mechanism and a stainless steel tube inserting and extracting mechanism.
2. The seamless stainless steel pipe purging device as claimed in claim 1, wherein the high pressure sand water tank is a pressure-bearing tank body with an open top, the open top is fixedly connected with a switch lever and is connected with one side of the top of the high pressure sand water tank through a rotating shaft, the rotating shaft is located at the joint of the open top and the switch lever, and a tank cover pneumatic device is connected to the top of the switch lever;
the sand leading-in device is a pneumatic spiral pushing-in device, the water leading-in device comprises a clean water supply pipe, and the sand leading-in device and the water leading-in device are arranged on the opposite sides of the pneumatic device of the tank cover at the top of the high-pressure sand water tank;
the lower part of the high-pressure sand water tank is provided with a high-pressure sand water airflow and high-pressure gas replacement and lead-out device which comprises a Y-shaped branched pipe fitting and a high-pressure sand water internal spiral thread outlet pipe;
the Y-shaped branched pipe fitting comprises a first connector, a second connector and a third connector, the first connector is connected with a high-pressure air supply pipe, the second connector is connected with a high-pressure airflow outlet pipe, and the high-pressure air supply pipe and the high-pressure airflow outlet pipe are both arranged on the side wall of the high-pressure sand water tank and penetrate through the side wall of the high-pressure sand water tank; the third interface is connected with a high-pressure sand water internal spiral thread outlet pipe, the outlet end of the high-pressure sand water internal spiral thread outlet pipe is connected with a butt-joint insertion bell mouth, and the butt-joint insertion bell mouth is connected with a stainless steel pipe.
3. The seamless stainless steel pipe purging device according to claim 1, wherein the stainless steel pipe introduction mechanical arm and the stainless steel pipe discharge mechanical arm are both stainless steel pipe pneumatic rotating mechanical arms and are mounted at the left end and the right end of the same plane on the stainless steel pipe moving workbench, each of the stainless steel pipe introduction mechanical arm and the stainless steel pipe discharge mechanical arm comprises two branch arms, the bottom ends of the two branch arms are connected, and the top ends of the two branch arms are arranged in front of the back and are both arc-shaped grooves; the central axes of the top ends of the stainless steel pipe leading-in mechanical arm and the top end branch arm of the stainless steel pipe leading-out mechanical arm are coincided;
the stainless steel pipe leading-in mechanical arm and the stainless steel pipe leading-out mechanical arm rotate and swing left and right, the stainless steel pipe leading-in mechanical arm rotates and swings left and right to serve as a leading-in process, the stainless steel pipe leading-out mechanical arm rotates and swings right and left to serve as a leading-out process, a right terminal of the stainless steel pipe leading-in mechanical arm and a left terminal top circular arc groove of the stainless steel pipe leading-out mechanical arm are provided with a coincidence center line in the front-back direction, two branches of the mechanical arm are intersected with each other, the coincidence center line of the two branch top circular arc grooves of the stainless steel pipe leading-in and leading-out mechanical arm in the front-back direction coincides with the center line;
the stainless steel pipe guiding-in robot is used for guiding the stainless steel pipe from the left positioning terminal to the right positioning terminal, namely a stainless steel pipe inserting and extracting operation central line in a rotating and swinging mode, and the stainless steel pipe guiding-out robot is used for guiding the stainless steel pipe from the left positioning terminal, namely the stainless steel pipe inserting and extracting operation central line to the right positioning terminal in a rotating mode.
4. The seamless stainless steel tube purging device as claimed in claim 1, wherein the stainless steel tube air claw mechanism comprises an air claw cylinder, two clamping pieces and two cross sliding rods, a sliding block is arranged at the top of the air claw cylinder, the cross sliding rods are connected to the middle of the clamping pieces, sliding grooves are formed in the cross sliding rods, the sliding block penetrates through the cross position of the two cross sliding rods, and the sliding block is matched with the sliding grooves;
the stainless steel pipe air claw mechanism is arranged in the middle of two crossed branches of a stainless steel pipe leading-in mechanical arm and a stainless steel pipe leading-out mechanical arm of a stainless steel pipe moving workbench, a clamping piece of the stainless steel pipe air claw mechanism is two opposite arc-shaped grooves, the front-back direction center line of the two opposite arc-shaped grooves of the clamping piece is completely overlapped with the front-back direction overlapped center line of the arc-shaped grooves at the tops of the two branch mechanical arms of the leading-in mechanical arm and the leading-out mechanical arm, and the stainless steel pipe inserting and extracting operation center line is completely overlapped in height and front-.
5. The seamless stainless steel pipe purging device as claimed in claim 1, wherein the stainless steel pipe inserting and extracting mechanism is a front and rear pneumatic displacement mechanism of a stainless steel pipe moving table, and the lower portion of the stainless steel pipe moving table comprises a front and rear displacement horizontal rail and a matching roller mechanism.
6. The seamless stainless steel pipe purging device as claimed in claim 2, wherein a water inlet solenoid valve is connected to the water introduction means, and a gas inlet solenoid valve is connected to the high pressure gas supply pipe.
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| CN201921858735.2U CN211220298U (en) | 2019-10-31 | 2019-10-31 | Seamless stainless steel tube purging device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110682216A (en) * | 2019-10-31 | 2020-01-14 | 太原中金天威不锈钢管股份有限公司 | Seamless stainless steel pipe purging device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110682216A (en) * | 2019-10-31 | 2020-01-14 | 太原中金天威不锈钢管股份有限公司 | Seamless stainless steel pipe purging device and method |
| CN110682216B (en) * | 2019-10-31 | 2024-04-16 | 太原中金天威不锈钢管股份有限公司 | Seamless stainless steel tube purging method |
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