Seamless steel tube burr grinding equipment

Abstract

The invention discloses seamless steel tube burr grinding equipment in the technical field of seamless steel tubes, and the seamless steel tube burr grinding equipment comprises a fixed cylinder which comprises an outer sleeve and a seamless steel tube; and the polishing mechanism is connected with the fixing cylinder, the polishing mechanism comprises a rotating rod, the rotating rod is arranged in an inner cavity of the seamless steel pipe, and the two ends of the rotating rod penetrate through the seamless steel pipe and are arranged on the outer side of the outer sleeve. Flexible abrasive materials are discharged through the discharging holes in the rotating rod, the flexible abrasive materials impact the side wall of an inner cavity of the seamless steel pipe under the centrifugal force generated by rotation of the rotating rod to polish burrs on the side wall of the inner cavity of the seamless steel pipe, the flexible materials are used for deburring, vibration of the steel pipe in the deburring process can be effectively reduced, and the deburring efficiency is improved. Damage in the steel pipe caused by vibration is avoided, and the production quality of the steel pipe is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of seamless steel pipes, in particular to a burr grinding device for seamless steel pipes. Background Art

[0002] Seamless steel pipe is a long steel strip with a hollow cross-section and no seams around it. It is made by punching a whole round steel bar. During the manufacturing process of seamless steel pipe, burrs may appear on the inner wall of the seamless steel pipe due to production equipment failure or wear problems during use. The burrs on the inner wall of the seamless steel pipe will not only increase the resistance inside the pipe, but also capture solid particles and other impurities, causing blockage and eddy currents, further affecting the transportation efficiency of the pipe. In addition, burrs may also cause increased wear and corrosion of the pipe wall, shortening the service life of the pipe.

[0003] Generally, manual deburring (using files, sandpaper, grinding heads and other tools) and grinding deburring (including vibration, sandblasting, rolling and other methods) are used to deburr seamless steel pipes. Manual deburring is inefficient, while grinding deburring requires a machine to drive the seamless steel pipe to rotate. The seamless steel pipe will vibrate during rotation, and the inner wall of the seamless steel pipe will touch the grinding tool, causing damage to the pipe wall, affecting the production quality of the seamless steel pipe. How to ensure the production quality of seamless steel pipes is an urgent problem to be solved by technicians in this technical field. Summary of the invention

[0004] The purpose of the present invention is to provide a burr grinding device for seamless steel pipes to solve the problem proposed in the above background technology that when removing burrs by grinding, the seamless steel pipe needs to be driven to rotate by a device, the seamless steel pipe will vibrate during the rotation process, and the inner wall of the seamless steel pipe will touch the grinding tool to cause damage to the pipe wall, thereby affecting the production quality of the seamless steel pipe.

[0005] To achieve the above object, the present invention provides the following technical solution: a burr grinding device for seamless steel pipes, comprising:

[0006] A fixed cylinder, the fixed cylinder comprising an outer sleeve and a seamless steel pipe, the seamless steel pipe being arranged in the inner cavity of the outer sleeve;

[0007] A grinding mechanism, the grinding mechanism is connected to the fixed tube, the grinding mechanism comprises a rotating rod, the rotating rod is arranged in the inner cavity of the seamless steel tube and the two ends of the rotating rod penetrate the seamless steel tube and are arranged on the outside of the outer sleeve;

[0008] A feed hole for feeding abrasive is provided at the end of the rotating rod, and a discharge hole for discharging abrasive is provided on the circumferential outer wall of the rotating rod. When the rotating rod rotates, the abrasive is discharged through the discharge hole. Under the action of the centrifugal force generated by the rotation of the rotating rod, the abrasive is ejected onto the inner cavity side wall of the seamless steel pipe to grind the burrs on the inner cavity of the seamless steel pipe.

[0009] Preferably, mounting holes are evenly opened on the circumferential outer wall of the outer sleeve, and an ultrasonic device for detecting the wall thickness of the seamless steel pipe is detachably installed on the inner side of the mounting hole;

[0010] A first fixing seat for support is detachably mounted on the bottom of the circumferential outer side wall of the outer sleeve.

[0011] Preferably, the fixing cylinder further comprises a fixing ring;

[0012] The fixing ring is arranged in the inner cavity of the outer sleeve and is detachably connected to the seamless steel pipe.

[0013] Preferably, a driving blade for driving the abrasive to move is provided on the circumferential outer side wall of the rotating rod.

[0014] Preferably, the grinding mechanism further includes a first end cover and a second end cover;

[0015] The first end cover is arranged on the outer circumferential wall of the rotating rod and is connected to the end of the outer sleeve to seal one end of the seamless steel pipe;

[0016] The second end cover is arranged on the circumferential outer side wall of the rotating rod and is connected to the other end of the outer sleeve to seal the other end of the seamless steel pipe.

[0017] Preferably, the second end cover comprises:

[0018] Cover body;

[0019] A discharge nozzle, the discharge nozzle is arranged on a side of the cover body away from the outer sleeve, a discharge groove is provided on the side of the discharge nozzle away from the cover body, and the discharge groove penetrates the cover body and is in communication with the inner cavity of the seamless steel pipe;

[0020] A connecting block is arranged at the bottom of the discharge nozzle, and a first sliding groove is opened at the bottom of the connecting block.

[0021] Preferably, a filtering mechanism is provided at the end of the fixed cylinder, and the filtering mechanism comprises:

[0022] Screen assembly;

[0023] A base, the base being connected to the screen assembly;

[0024] A driving mechanism is connected to the screen body assembly and the base respectively.

[0025] Preferably, the screen assembly comprises:

[0026] A movable screen, wherein the inner cavity of the movable screen is evenly provided with filter holes, a sliding block is provided on the side wall of the movable screen, and a first connecting shaft is provided on the top side of the movable screen;

[0027] A fixed screen is arranged at the bottom of the movable screen and communicates with the inner cavity of the movable screen through filter holes. The inner cavity of the fixed screen is evenly provided with sieve holes. A discharge hopper is arranged at the bottom of the fixed screen and communicates with the inner cavity of the fixed screen through the sieve holes.

[0028] Preferably, the base comprises:

[0029] An outer frame, wherein a second sliding groove is provided on an inner side wall of the outer frame;

[0030] A mounting frame is detachably connected to the outer frame.

[0031] Preferably, the driving mechanism comprises:

[0032] A second fixing seat, wherein a guide groove is provided on a side wall of the second fixing seat, and a spring is provided inside the guide groove;

[0033] A bearing, wherein the bearing is arranged on a side wall of the second fixing seat, a crank is arranged on the side wall of the bearing, and a connecting sleeve is arranged at an end of the crank;

[0034] A sliding seat, the sliding seat is movably connected to the second fixed seat through a guide groove, the sliding seat is connected to the spring, and a second connecting shaft is arranged on the side wall of the sliding seat;

[0035] A first driving arm, wherein two ends of the first driving arm are respectively connected to the crank and the second connecting shaft;

[0036] A second driving arm, wherein an end portion of the second driving arm is connected to the second connecting shaft.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] (1) A fluid-like flexible abrasive is fed into the inner cavity of the rotating rod through the feed hole, and the flexible abrasive is discharged through the discharge hole on the rotating rod. The flexible abrasive hits the inner cavity side wall of the seamless steel pipe under the centrifugal force generated by the rotation of the rotating rod to grind the burrs on the inner cavity side wall of the seamless steel pipe. Deburring with a flexible material can effectively reduce the vibration of the steel pipe during the deburring process, avoid damage to the inside of the steel pipe caused by vibration, and ensure the production quality of the steel pipe;

[0039] (2) The ultrasonic data of the seamless steel pipe during the deburring process is collected by an ultrasonic collection device, and the wall thickness data of the seamless steel pipe is obtained by using the ultrasonic data. The rotation speed of the rotating rod is adjusted according to the real-time displayed wall thickness data of the seamless steel pipe to avoid the influence of the wall thickness of the seamless steel pipe due to the excessively high rotation speed of the rotating rod, and also to avoid the inability of the abrasive to effectively remove the burrs due to the excessively low rotation speed of the rotating rod;

[0040] (3) The abrasive discharged through the discharge chute contains a large amount of metal chips from grinding. The metal chips in the abrasive are filtered through the filter holes, and the abrasive is discharged through the filter holes into the inner cavity of the fixed screen. The metal chips remain in the inner cavity of the movable screen. The bottom of the inner cavity of the fixed screen is evenly provided with sieve holes. The bottom of the fixed screen is integrally formed with a discharge hopper, which is connected with the inner cavity of the fixed screen through the sieve holes. The abrasive is filtered for the second time through the sieve holes to further remove the metal chips in the abrasive. The abrasive without the metal chips is discharged through the discharge hopper for recycling and reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the structure of the present invention;

[0042] Figure 2 It is a partial cross-sectional schematic diagram of the fixing cylinder of the present invention;

[0043] Figure 3 This is a schematic diagram of the grinding mechanism structure of the present invention;

[0044] Figure 4 This is a schematic diagram of the second end cover structure of the present invention;

[0045] Figure 5 It is a schematic diagram of the structure of the filtering mechanism of the present invention;

[0046] Figure 6 It is a schematic diagram of the structure of the screen assembly of the present invention;

[0047] Figure 7 It is a schematic cross-sectional view of a fixed screen of the present invention;

[0048] Figure 8 This is a schematic diagram of the base structure of the present invention;

[0049] Fig. 9 It is a schematic diagram of the driving mechanism structure of the present invention.

[0050] In the figure: 100 fixed cylinder, 110 outer sleeve, 110a mounting hole, 110b first fixed seat, 120 fixed ring, 130 seamless steel pipe, 200 grinding mechanism, 210 rotating rod, 210a feeding hole, 210b discharging hole, 210c driving blade, 220 first end cover, 230 second end cover, 230a cover body, 230b discharging nozzle, 230b-1 discharging trough, 230c connecting block, 230c-1 first slide trough, 300 filtering mechanism, 310 screen body assembly, 310a movable screen, 310a-1 filtering hole, 3 10a-2 slider, 310a-3 first connecting shaft, 310b fixed screen, 310b-1 screen hole, 310b-2 discharge hopper, 320 base, 320a outer frame, 320a-1 second slide groove, 320b mounting frame, 330 driving mechanism, 330a second fixed seat, 330a-1 guide groove, 330a-2 spring, 330b bearing, 330b-1 crank, 330b-2 connecting sleeve, 330c sliding seat, 330c-1 second connecting shaft, 330d first driving arm, 330e second driving arm. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] The present invention provides a burr grinding device for seamless steel pipes. A fluid-like flexible abrasive is fed into the inner cavity of a rotating rod through a feed hole, and the flexible abrasive is discharged through a discharge hole on the rotating rod. The flexible abrasive hits the inner cavity side wall of the seamless steel pipe under the centrifugal force generated by the rotation of the rotating rod to grind the burrs on the inner cavity side wall of the seamless steel pipe. The flexible material is used for deburring, which can effectively reduce the vibration of the steel pipe during the deburring process, avoid damage to the inside of the steel pipe caused by vibration, and ensure the production quality of the steel pipe. Please refer to Figure 1 , comprising: a fixed cylinder 100, a grinding mechanism 200 and a filtering mechanism 300;

[0053] Example 1

[0054] See also Figure 1-3 , the fixed cylinder 100 and the grinding mechanism 200 are detachably connected;

[0055] The fixed sleeve 100 includes an outer sleeve 110, a fixed ring 120 and a seamless steel pipe 130;

[0056] A first fixing seat 110b is detachably mounted on the bottom of the circumferential outer wall of the outer sleeve 110. The first fixing seat 110b is placed on the ground or on a workbench. The first fixing seat 110b is detachably connected to the ground or the workbench, and the outer sleeve 110 is supported by the first fixing seat 110b.

[0057] There are two fixing rings 120, which are detachably mounted at both ends of the inner cavity of the outer sleeve 110. The two fixing rings 120 are symmetrically arranged. The fixing rings 120 can be divided into multiple groups according to the outer diameter of the seamless steel pipe 130, and each group has two fixing rings 120. The fixing ring 120 is selected according to the outer diameter of the seamless steel pipe 130 to be processed.

[0058] The seamless steel pipe 130 is detachably connected to the fixing ring 120, and the fixing ring 120 is sleeved on the outer circumferential wall of the seamless steel pipe 130. The seamless steel pipe 130 is fixedly installed in the inner cavity of the outer sleeve 110 through the fixing ring 120;

[0059] The grinding mechanism 200 includes a rotating rod 210, a first end cover 220 and a second end cover 230;

[0060] The first end cover 220 is mounted on the outer circumferential wall of the rotating rod 210 through a bearing. The side wall of the first end cover 220 contacts the end of the outer sleeve 110 and is detachably mounted on the end of the outer sleeve 110 through a locking mechanism. The side of the first end cover 220 facing the outer sleeve 110 also contacts the end of the seamless steel pipe 130 to seal the end of the seamless steel pipe 130.

[0061] The second end cover 230 includes a cover body 230a;

[0062] The cover 230a is mounted on the outer circumferential wall of the rotating rod 210 through a bearing, and the side wall of the cover 230a contacts the end of the outer sleeve 110 away from the first end cover 220 and is detachably mounted on the end of the outer sleeve 110 through a locking mechanism. The side of the cover 230a facing the outer sleeve 110 also contacts the end of the seamless steel pipe 130 away from the first end cover 220 to seal the end of the seamless steel pipe 130.

[0063] The rotating rod 210 is installed in the inner cavity of the seamless steel pipe 130 through the first end cover 220 and the cover body 230a and is coaxially arranged with the seamless steel pipe 130;

[0064] A feeding hole 210a is provided at the end of the rotating rod 210, and the feeding hole 210a vertically penetrates the other end of the rotating rod 210;

[0065] Discharge holes 210b are evenly formed on the outer circumferential wall of the rotating rod 210, and the discharge holes 210b are connected with the inner cavity of the feed hole 210a. The discharge holes 210b are arranged in the inner cavity of the seamless steel pipe 130;

[0066] A gear is also installed on the outer circumferential wall of the rotating rod 210. The gear is arranged outside the first end cover 220. The rotating rod 210 is driven to rotate by the motor and the gear installed on the output shaft of the motor in conjunction with the gear installed on the rotating rod 210.

[0067] A material pipe is installed on the inner side of the feed hole 210a on the end of the rotating rod 210 adjacent to the first end cover 220 through a bearing, and a material pump is installed on the end of the material pipe away from the rotating rod 210. The fluid-like flexible abrasive is transported to the inner cavity of the feed hole 210a through the material pump and discharged through the discharge hole 210b. Under the centrifugal force generated by the rotation of the rotating rod 210, the abrasive is splashed onto the inner cavity side wall of the seamless steel pipe 130. The inner cavity of the seamless steel pipe 130 is deburred by the splashed flexible abrasive, which can effectively reduce the vibration of the steel pipe during the deburring process, avoid damage to the inside of the steel pipe caused by vibration, and ensure the production quality of the steel pipe.

[0068] Example 2

[0069] See also Figure 1-3 The outer circumferential wall of the outer sleeve 110 is evenly provided with mounting holes 110a, and an ultrasonic collecting device is detachably installed on the inner side of the mounting hole 110a. The collecting end of the ultrasonic collecting device is in contact with the outer circumferential wall of the seamless steel pipe 130. The ultrasonic collecting device collects ultrasonic data of the seamless steel pipe 130 during the deburring process, and the wall thickness data of the seamless steel pipe 130 is obtained by using the ultrasonic data.

[0070] A data cable is connected to the end of the ultrasonic collection device away from the seamless steel pipe 130, and the data cable is connected to a computer. The computer displays the collected wall thickness data of the seamless steel pipe 130, and the rotation speed of the rotating rod 210 is adjusted according to the real-time displayed wall thickness data of the seamless steel pipe 130 to avoid the wall thickness of the seamless steel pipe 130 being affected by the excessively high rotation speed of the rotating rod 210. It can also avoid the abrasive being unable to effectively remove burrs due to the excessively low rotation speed of the rotating rod 210.

[0071] Example 3

[0072] See also Figure 1-4 A driving blade 210c is welded on the circumferential outer wall of the rotating rod 210. The driving blade 210c is arranged in a spiral shape. The driving blade 210c is arranged in the inner cavity of the seamless steel pipe 130. The driving blade 210c is close to the inner wall of the seamless steel pipe 130 but does not contact the inner wall of the seamless steel pipe 130. The driving blade 210c is driven by the rotating rod 210 to rotate in the inner cavity of the seamless steel pipe 130. The abrasive entering the inner cavity of the seamless steel pipe 130 is spirally conveyed by the rotation of the driving blade 210c.

[0073] The second end cover 230 includes a discharge nozzle 230b;

[0074] The discharge nozzle 230b is integrally formed on the bottom of the cover body 230a away from the outer sleeve 110;

[0075] A discharge groove 230b-1 is formed on one end of the discharge nozzle 230b away from the cover body 230a. The discharge groove 230b-1 obliquely penetrates the cover body 230a toward the outer sleeve 110, and the discharge groove 230b-1 is connected to the inner cavity of the seamless steel pipe 130.

[0076] Driven by the rotation of the driving blade 210c, the abrasive moves toward the side of the cover body 230a, enters the inner side of the discharge groove 230b-1 and is discharged through the side of the discharge nozzle 230b away from the cover body 230a, thereby preventing the abrasive from accumulating in the inner cavity of the seamless steel pipe 130 and affecting the rotation of the rotating rod 210, thereby affecting the burr removal effect.

[0077] Example 4

[0078] See also Figure 1-7 , the filter mechanism 300 is placed on a side adjacent to the cover 230a, and the filter mechanism 300 includes a screen assembly 310;

[0079] The screen assembly 310 includes a movable screen 310a and a fixed screen 310b, wherein the bottom of the movable screen 310a contacts the top of the fixed screen 310b;

[0080] The inner cavity of the movable screen 310a corresponds to the discharge groove 230b-1, and the abrasive discharged through the discharge groove 230b-1 enters the inner cavity of the movable screen 310a. The movable screen 310a can move back and forth on the top of the fixed screen 310b under the action of external force, so that the abrasive can be evenly spread on the bottom of the inner cavity of the movable screen 310a.

[0081] The inner cavity of the movable screen 310a is a platform structure with a large upper portion and a small lower portion. The inner wall of the movable screen 310a is evenly provided with filter holes 310a-1. The abrasive discharged through the discharge groove 230b-1 contains a large amount of metal chips from grinding. The metal chips in the abrasive are filtered through the filter holes 310a-1, and the abrasive is discharged into the inner cavity of the fixed screen 310b through the filter holes 310a-1, and the metal chips remain in the inner cavity of the movable screen 310a.

[0082] The inner cavity of the fixed screen 310b is connected with the inner cavity of the movable screen 310a through the filter hole 310a-1, and the abrasives that filter the metal chips enter the inner cavity of the fixed screen 310b;

[0083] The bottom of the inner cavity of the fixed screen 310b is evenly provided with sieve holes 310b-1, and a discharge hopper 310b-2 is integrally formed at the bottom of the fixed screen 310b. The discharge hopper 310b-2 is connected with the inner cavity of the fixed screen 310b through the sieve holes 310b-1. The abrasive is filtered twice through the sieve holes 310b-1 to further remove metal chips in the abrasive. The abrasive without metal chips is discharged through the discharge hopper 310b-2 to be recycled and reused.

[0084] Example 5

[0085] In order to further separate the metal chips in the abrasive, an electromagnet can be embedded in the bottom of the inner cavity of the fixed screen 310b. The electromagnet can adsorb the metal chips in the abrasive, which can further separate the metal chips in the abrasive, prevent the fine metal chips from passing through the filter hole 310a-1, and separate the metal chips cleanly.

[0086] Example 6

[0087] See also Figure 1 , Figure 5-6 and Figure 8-9 The left and right side walls of the movable screen 310a are integrally formed with sliders 310a-2, and the top rear side of the movable screen 310a is integrally formed with a first connecting shaft 310a-3;

[0088] The second end cover 230 further includes a connecting block 230c;

[0089] The connecting block 230c is integrally formed at the bottom of the discharge nozzle 230b, and a first slide groove 230c-1 is provided at the bottom of the connecting block 230c;

[0090] The filtering mechanism 300 includes a base 320 and a driving mechanism 330;

[0091] The base 320 includes an outer frame 320a and a mounting frame 320b;

[0092] A side edge of the outer frame 320a adjacent to the cover body 230a is connected to the first slide groove 230c-1 through a linear bearing, and the outer frame 320a can slide on the connecting block 230c through the linear bearing and the first slide groove 230c-1;

[0093] The left and right inner side walls of the outer frame 320a are both provided with guide grooves 330a-1 matching the slider 310a-2, and the movable screen 310a is slidably connected to the outer frame 320a through the cooperation of the slider 310a-2 and the guide grooves 330a-1;

[0094] There are two mounting frames 320b, which are mounted on the front and rear sides of the outer frame 320a, one in front and one in the back. The two ends of the mounting frames 320b are detachably connected to the left and right side walls of the outer frame 320a, respectively. The mounting frames 320b span the upper end of the outer frame 320a.

[0095] The driving mechanism 330 includes a second fixed seat 330a, a bearing 330b, a sliding seat 330c, a first driving arm 330d and a second driving arm 330e;

[0096] The second fixing seat 330a is disposed at the upper end of the outer frame 320a, and the two ends of the top of the second fixing seat 330a are detachably connected to the two mounting frames 320b on one side facing the outer frame 320a respectively;

[0097] A guide groove 330a-1 is provided on the side wall of the second fixing seat 330a, and the guide groove 330a-1 vertically penetrates the other side wall of the second fixing seat 330a, and springs 330a-2 are detachably installed at the front and rear ends of the guide groove 330a-1;

[0098] The bearing 330b is embedded in the side of the second fixing seat 330a away from the guide groove 330a-1, and the bearing 330b passes through the other side wall of the second fixing seat 330a. The left and right sides of the bearing 330b are flush with the left and right sides of the second fixing seat 330a.

[0099] A crank 330b-1 is detachably mounted on the bearing 330b. The crank 330b-1 is hollow, and both ends of the crank 330b-1 are open. One end of the crank 330b-1 passes through the bearing 330b, and the other end corresponds to the rotating rod 210.

[0100] The end of the crank 330b-1 facing the rotating rod 210 is detachably mounted with a connecting sleeve 330b-2 via a spline or a flat key, and the end of the connecting sleeve 330b-2 away from the crank 330b-1 is detachably connected to the rotating rod 210 via a spline or a flat key, and the crank 330b-1 is driven to rotate by the cooperation of the rotating rod 210 and the connecting sleeve 330b-2;

[0101] The inner cavity of the crank 330b-1 is connected to the inner cavity of the rotating rod 210 through the connecting sleeve 330b-2. Part of the abrasive that has not been discharged from the discharge hole 210b enters the inner cavity of the crank 330b-1 through the connecting sleeve 330b-2 and is discharged into the inner cavity of the movable screen 310a through the end of the crank 330b-1 away from the connecting sleeve 330b-2.

[0102] The sliding seat 330c is slidably installed in the inner cavity of the guide groove 330a-1, and the sliding seat 330c is arranged between the two springs 330a-2 and is detachably connected to the springs 330a-2;

[0103] The second connecting shaft 330c-1 is rotatably connected to the sliding seat 330c through a bearing, and two ends of the second connecting shaft 330c-1 respectively pass through two sides of the sliding seat 330c;

[0104] One end of the first driving arm 330d is rotatably connected to the crank 330b-1 through a bearing, the other end of the first driving arm 330d is rotatably connected to the second connecting shaft 330c-1, one end of the second driving arm 330e is rotatably connected to the second connecting shaft 330c-1, and the other end of the second driving arm 330e is rotatably connected to the first connecting shaft 310a-3;

[0105] Specifically, the rotating rod 210 drives the crank 330b-1 to rotate through the connecting sleeve 330b-2, and drives the end of the first driving arm 330d connected to the crank 330b-1 to make a circular motion through the crank 330b-1. The end of the first driving arm 330d connected to the second connecting shaft 330c-1 makes a push-pull motion under the limit of the sliding seat 330c and the second connecting shaft 330c-1. The connected end drives the sliding seat 330c to make reciprocating motion back and forth on the inner side of the second slide groove 320a-1 through the second connecting shaft 330c-1, and the second connecting shaft 330c-1 drives the movable screen 310a to make reciprocating motion back and forth on the top of the fixed screen 310b through the cooperation of the second driving arm 330e and the first connecting shaft 310a-3, so that the abrasive entering the inner cavity of the fixed screen 310b can be spread flat on the inner cavity of the fixed screen 310b, thereby improving the filtering efficiency.

[0106] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A burr grinding device for seamless steel pipes, characterized in that: include: A fixed cylinder (100), the fixed cylinder (100) comprising an outer sleeve (110) and a seamless steel pipe (130), the seamless steel pipe (130) being arranged in the inner cavity of the outer sleeve (110); A grinding mechanism (200), the grinding mechanism (200) being connected to the fixed cylinder (100), the grinding mechanism (200) comprising a rotating rod (210), the rotating rod (210) being arranged in the inner cavity of the seamless steel pipe (130) and having two ends penetrating the seamless steel pipe (130) and arranged on the outside of the outer sleeve (110); The end of the rotating rod (210) is provided with a feeding hole (210a) for feeding abrasive, and the outer circumferential wall of the rotating rod (210) is provided with a discharging hole (210b) for discharging abrasive. When the rotating rod (210) rotates, the abrasive is discharged through the discharging hole (210b), and under the action of the centrifugal force generated by the rotation of the rotating rod (210), the abrasive is ejected onto the inner cavity side wall of the seamless steel pipe (130) to grind the burrs of the inner cavity of the seamless steel pipe (130).

2. The burr grinding device for seamless steel pipe according to claim 1, characterized in that: The outer circumferential wall of the outer sleeve (110) is evenly provided with mounting holes (110a), and an ultrasonic device for detecting the wall thickness of the seamless steel pipe (130) is detachably mounted on the inner side of the mounting hole (110a); A first fixing seat (110b) for support is detachably mounted on the bottom of the circumferential outer side wall of the outer sleeve (110).

3. The burr grinding device for seamless steel pipe according to claim 1, characterized in that: The fixing cylinder (100) further comprises a fixing ring (120); The fixing ring (120) is disposed in the inner cavity of the outer sleeve (110) and is detachably connected to the seamless steel pipe (130).

4. The burr grinding device for seamless steel pipe according to claim 1, characterized in that: A driving blade (210c) for driving the abrasive to move is arranged on the circumferential outer wall of the rotating rod (210).

5. The burr grinding device for seamless steel pipe according to claim 4, characterized in that: The grinding mechanism (200) further comprises a first end cover (220) and a second end cover (230); The first end cover (220) is arranged on the outer circumferential wall of the rotating rod (210) and is connected to the end of the outer sleeve (110) to seal one end of the seamless steel pipe (130); The second end cover (230) is disposed on the circumferential outer wall of the rotating rod (210) and is connected to the other end of the outer sleeve (110) to seal the other end of the seamless steel pipe (130).

6. The burr grinding device for seamless steel pipe according to claim 5, characterized in that: The second end cover (230) comprises: Cover body (230a); a discharge nozzle (230b), the discharge nozzle (230b) being arranged on a side of the cover body (230a) away from the outer sleeve (110), a discharge groove (230b-1) being provided on the side of the discharge nozzle (230b) away from the cover body (230a), the discharge groove (230b-1) penetrating the cover body (230a) and communicating with the inner cavity of the seamless steel pipe (130); A connecting block (230c), wherein the connecting block (230c) is arranged at the bottom of the discharge nozzle (230b), and a first sliding groove (230c-1) is opened at the bottom of the connecting block (230c).

7. The burr grinding device for seamless steel pipe according to claim 1, characterized in that: A filtering mechanism (300) is provided at the end of the fixed cylinder (100), and the filtering mechanism (300) comprises: A screen assembly (310); A base (320), wherein the base (320) is connected to the screen assembly (310); A driving mechanism (330) is connected to the screen assembly (310) and the base (320) respectively.

8. The burr grinding device for seamless steel pipe according to claim 7, characterized in that: The screen assembly (310) comprises: A movable screen (310a), wherein the inner cavity of the movable screen (310a) is evenly provided with filter holes (310a-1), a sliding block (310a-2) is arranged on the side wall of the movable screen (310a), and a first connecting shaft (310a-3) is arranged on the top side of the movable screen (310a); A fixed screen (310b), wherein the fixed screen (310b) is arranged at the bottom of the movable screen (310a) and is connected to the inner cavity of the movable screen (310a) through the filter holes (310a-1); the inner cavity of the fixed screen (310b) is evenly provided with sieve holes (310b-1); a discharge hopper (310b-2) is arranged at the bottom of the fixed screen (310b) and is connected to the inner cavity of the fixed screen (310b) through the sieve holes (310b-1).

9. The burr grinding device for seamless steel pipe according to claim 7, characterized in that: The base (320) comprises: An outer frame (320a), wherein a second sliding groove (320a-1) is provided on an inner side wall of the outer frame (320a); A mounting frame (320b), wherein the mounting frame (320b) is detachably connected to the outer frame (320a).

10. The burr grinding device for seamless steel pipe according to claim 7, characterized in that: The driving mechanism (330) comprises: A second fixed seat (330a), wherein a guide groove (330a-1) is provided on a side wall of the second fixed seat (330a), and a spring (330a-2) is provided inside the guide groove (330a-1); A bearing (330b), wherein the bearing (330b) is arranged on a side wall of the second fixing seat (330a), a crank (330b-1) is arranged on the side wall of the bearing (330b), and a connecting sleeve (330b-2) is arranged at the end of the crank (330b-1); A sliding seat (330c), the sliding seat (330c) is movably connected to the second fixed seat (330a) through a guide groove (330a-1), the sliding seat (330c) is connected to the spring (330a-2), and a second connecting shaft (330c-1) is provided on a side wall of the sliding seat (330c); A first driving arm (330d), wherein two ends of the first driving arm (330d) are respectively connected to the crank (330b-1) and the second connecting shaft (330c-1); A second driving arm (330e), wherein an end portion of the second driving arm (330e) is connected to the second connecting shaft (330c-1).

Images