CN115351646A

CN115351646A - Galvanized pipe port grinding machine

Info

Publication number: CN115351646A
Application number: CN202211294171.0A
Authority: CN
Inventors: 赵观军
Original assignee: Jiangsu Jingsheng Hose Co ltd
Current assignee: Jiangsu Jingsheng Hose Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2022-11-18

Abstract

The invention belongs to the field of galvanized pipe fittings, and particularly relates to a port grinding machine for a galvanized pipe fitting, which comprises a machine body; a frame is fixedly connected to the outside of the machine body; the top end of the rack is fixedly connected with a fixed frame; a first motor is fixedly connected inside the fixing frame; fix the inside at the organism through the body that sets up, utilize in the port of a dagger insertion body, the cooperation is beaten the wheel and is polished along with a motor output end rotation, the condition that the body port produced deformation when polishing has been reduced, utilize No. two daggers, no. three daggers and No. four daggers are fixed in the outside of rim plate, adapt to the inside support of body of different thicknesses, improve the effect of polishing to body adaptability, it runs through the fixed block to utilize spacing bolt, and it is spacing to insert the inner wall of rim plate, play the spacing effect of a dagger, utilize the guide bar direction at last, make a dagger insert more easily in the body, the cooperation is spacing to the body, the department of polishing is placed to the body of being convenient for and is processed.

Description

Galvanized pipe port grinding machine

Technical Field

The invention belongs to the field of galvanized pipe fittings, and particularly relates to a port grinding machine for a galvanized pipe fitting.

Background

The galvanized pipe fitting is a pipe fitting after a galvanizing process, the galvanizing process is to plate a layer of zinc on the surface of the pipe fitting made of metal and alloy materials, so that the antirust capacity and the aesthetic degree of the pipe fitting are improved, a hot galvanizing method is generally adopted for galvanizing, and the galvanized pipe fitting is uniform in plating and strong in adhesive force.

The pipe fitting can cut according to the demand after the galvanization, because the section port that the pipe cut can be uneven, also can have the burr on the port to influence the installation accuracy of galvanization pipe, so need use the polisher to polish port department.

At present when the polisher is used, fix the zinc-plated pipe on the machine mostly, directly polish to port department, because not supported in the thin pipe port and be the cavity state, when polishing its port, lead to the pipe port to be polished inside deformation to need cut the rework with deformation department, cause the wasting of resources of pipe.

Therefore, the invention provides a port grinding machine for a galvanized pipe fitting.

Disclosure of Invention

To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a port grinding machine for a galvanized pipe fitting, which comprises a machine body; a frame is fixedly connected to the outside of the machine body; the top end of the rack is fixedly connected with a fixed frame; a first motor is fixedly connected inside the fixing frame; the output end of the first motor is fixedly connected with a polishing wheel, and the polishing wheel is positioned in the fixing frame; the top end of the rack is provided with a first support column; the top end of the rack is provided with a supporting component, and the supporting component is used for fixing a first support column; a pipe body is arranged on the inner side wall of the machine body; place the body and pass in the inside of organism to utilize supporting component to support a dagger fixed stay, insert on a dagger port department of body, promote the mount in the frame and slide the laminating body outside, the output of a motor rotates, drives the wheel of polishing and rotates, polishes the lateral wall of body, utilizes the inside of a dagger insert body to support, has reduced and has produced deformation when the body port is polished, thereby has improved the efficiency of body processing.

Preferably, the supporting component comprises a supporting frame, a rotating rod and a wheel disc; the support frame is fixedly connected to the top end of the rack; the rotating rod is rotatably connected to the inner side wall of the support frame; the wheel disc is fixedly connected to the outer part of the rotating rod, and a support column is rotatably connected to the inner side wall of the wheel disc; install the inside wall at the rim plate with a dagger to rely on the bull stick to rotate to connect at the inside wall of support frame, play the effect that supports a dagger, after fixed to the rim plate, insert the port department of body with a dagger, can polish pipe body port department, produced deformation when having reduced the pipe body port and polished.

Preferably, a second brace is fixedly connected to the outer part of the wheel disc; a third support column is fixedly connected to the outer part of the wheel disc; four brace columns are fixedly connected to the outer part of the wheel disc; fix No. two daggers, no. three daggers and No. four daggers in the outside of rim plate respectively for to the body of different thickness insert the support, can rotate the rim plate according to the body of different thicknesses when polishing, adjust to suitable position insert the body inside can, play the effect of polishing to different thickness bodies.

Preferably, a rotating wheel is fixedly connected to the outer part of the rotating rod, which is far away from the wheel disc; a plurality of groups of grooves are formed outside the rotating wheel; a fixed block is fixedly connected to the outer part of the support frame; a limiting bolt is inserted into the wheel disc and penetrates through the fixing block; an elastic piece is sleeved outside the limiting bolt; utilize spacing bolt to run through the fixed block, and during inserting the rim plate inner wall and corresponding the jack, it is spacing to rely on the elastic component to draw and drag spacing bolt, plays the fixed spacing effect of a support column to when rotating the rim plate, can grip in the outside recess of runner, rotate the runner and drive the bull stick and rotate the inside wall at the support frame, drive the rim plate and rotate the regulation.

Preferably, a guide rod is sleeved outside the first support column; a limiting sleeve is sleeved outside the first support column; utilize the guide bar to fix the tip position at a dagger, the inside wall sliding insertion of the inclined plane laminating body of dependence guide bar plays direction male effect, utilize the stop collar to fix the lateral wall at a dagger simultaneously for to the spacing use of body, be convenient for spacing to the position of polishing, and No. two daggers, no. three daggers and No. four outside equal rigid couplings of dagger have not equidimension guide bar and stop collar, all be the supplementary effect of polishing of adaptability.

Preferably, the inner side wall of the first support column is in threaded connection with a threaded rod; four groups of slope-shaped blocks are fixedly connected to the outer part of the threaded rod and are positioned in the guide rod; the inner side wall of the guide rod is connected with four groups of matching sliding blocks in a sliding manner, and the bottom ends of the matching sliding blocks are arc-shaped; the outer parts of the four groups of matched sliding blocks are fixedly connected with supporting plates; the outer part of the supporting plate is fixedly connected with an anti-skid pad; when the diameter of the mouth of pipe internal diameter of part body and a dagger had the deviation, the outside of gripping the threaded rod is rotated, the threaded rod and the inner wall screw-thread fit of a dagger, drive the circular arc bottom that multiunit sloping block rotated laminating cooperation slider, utilize the domatic direction of sloping block, with cooperation slider jack-up, the backup pad on cooperation slider top outwards supports, the slipmat laminating is on the inner wall of body antiskid, no. two daggers, all be provided with the support piece that corresponds the size in No. three daggers and No. four daggers, play the effect of supporting to the internal portion of body, play the fixed spacing effect to a dagger simultaneously.

Preferably, the inner side wall of the machine body is rotatably connected with a first gear; two groups of electric push rods are arranged in the first gear, and the two groups of electric push rods are symmetrically arranged; the output end of the electric push rod is fixedly connected with a pressing plate; utilize a gear revolve to connect on the inner wall of organism to with the relative extension of two sets of electric push rod output, drive two sets of clamp plates with the body centre gripping in the inside of organism, the multiunit backup pad supports fixed at the inner wall of body simultaneously, when rotating a gear revolve, drives body and a dagger and rotates simultaneously, the usable wheel of polishing is polished to the port circumference of body, improves the effect of polishing.

Preferably, a second motor is installed inside the machine body; the output end of the second motor is fixedly connected with a second gear; the second gear is meshed with the first gear; the output end of the second motor is utilized to rotate, the second gear is driven to rotate along with the second motor, and the teeth of the second gear are meshed with the teeth of the first gear, so that the first gear rotates along with the second gear, the pipe body is driven to rotate and polish, and the effect of automatically rotating the pipe body to polish is achieved.

Preferably, four groups of collecting plates are inserted outside the wheel disc; the top end of the frame is provided with a dust collecting groove; a baffle is fixedly connected to the outer part of the fixing frame; the multi-group collecting plate is inserted into the outer position of the wheel disc in an inserting mode, the collecting plate is in a curved arc shape, waste chips can fall to the end portion of the collecting plate to be collected when being polished and falling, a small amount of waste chips can fall into the dust collecting groove to be collected, the waste chips which are polished are collected, the cleaning function is facilitated, the baffle is fixed to the sliding groove of the fixing frame, meanwhile, the waste chips are reduced to enter the sliding groove of the fixing frame, and the sliding of the fixing frame is influenced.

Preferably, a rubber pad is fixedly connected to the outer part of the pressure plate; a plurality of groups of convex blocks are fixedly connected to the outer part of the rubber pad; the rubber pad is fixedly connected to the outer portion of the pressing plate and matched with the plurality of groups of bumps to be attached to the side wall of the tube body, the effect of anti-skidding fixing of the tube body is achieved, meanwhile, the rubber pad is tightly attached to the side wall of the tube body, and the clamping tightness of the pressing plate is further improved.

The invention has the following beneficial effects:

1. according to the port grinding machine for the galvanized pipe fitting, the arranged pipe body is fixed inside the machine body, the first bracing column is inserted into the port of the pipe body, the grinding wheel is matched to rotate along with the output end of the first motor for grinding, the deformation of the port of the pipe body is reduced during grinding, the second bracing column, the third bracing column and the fourth bracing column are fixed outside the wheel disc to adapt to internal support of the pipe body with different thicknesses, the adaptive grinding effect of the pipe body is improved, the limiting bolt penetrates through the fixing block and is inserted into the inner wall of the wheel disc for limiting the first bracing column, and finally the guiding rod is used for guiding, so that the first bracing column is more easily inserted into the pipe body, the limiting sleeve is matched for limiting the pipe body, and the grinding position of the pipe body is convenient to process.

2. According to the port grinding machine for the galvanized pipe fitting, the inner side wall of the first support column is rotated through the arranged threaded rod threads to drive the slope blocks to extrude the matching slide block, so that the matching slide block slides up, the support plate is driven to be supported on the inner wall of the pipe body, and the effect of self-adaptive support on the inner wall of the pipe body is achieved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic view of the construction of the wheel disc of the present invention;

FIG. 3 is a schematic view of the construction of the housing of the present invention;

FIG. 4 is a schematic structural view of a first hinge of the present invention;

FIG. 5 is a schematic view of the construction of the guide bar of the present invention;

FIG. 6 is a schematic view of a threaded rod of the present invention;

FIG. 7 is a schematic view of the first gear of the present invention;

fig. 8 is a schematic view of the structure of the pressure plate of the present invention.

In the figure: 1. a body; 11. a frame; 12. a fixed mount; 13. a first motor; 14. grinding the wheel; 15. a first support column; 16. a pipe body; 2. a support frame; 21. a rotating rod; 22. a wheel disc; 3. a second brace strut; 31. a third support column; 32. a fourth brace strut; 4. a rotating wheel; 41. a fixed block; 42. a limiting bolt; 43. an elastic member; 5. a guide bar; 51. a limiting sleeve; 6. a threaded rod; 61. a sloping block; 62. matching with the sliding block; 63. a support plate; 64. a non-slip mat; 7. a first gear; 71. an electric push rod; 72. pressing a plate; 8. a second motor; 81. a second gear; 9. a collection plate; 91. a dust collecting groove; 92. a baffle plate; 93. a rubber pad; 94. and (6) a bump.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example one

As shown in fig. 1 to 6, a port grinding machine for galvanized pipe fittings according to an embodiment of the present invention includes a machine body 1; a frame 11 is fixedly connected to the outside of the machine body 1; a fixed frame 12 is fixedly connected to the top end of the frame 11; a first motor 13 is fixedly connected inside the fixed frame 12; the output end of the first motor 13 is fixedly connected with a polishing wheel 14, and the polishing wheel 14 is positioned inside the fixed frame 12; a first support column 15 is arranged at the top end of the frame 11; the top end of the frame 11 is provided with a support assembly, and the support assembly is used for fixing a first support column 15; a pipe body 16 is arranged on the inner side wall of the machine body 1; at present when the polisher is used, fix the zinc-plated pipe on the machine mostly, directly polish to port department, because the interior unsupported of thin pipe port is the cavity state, when polishing its port, lead to the pipe port to be polished inward deformation, thereby need to cut the deformation department and do over again, cause the wasting of resources of pipe, consequently, place body 16 in the inside of organism 1 and pass, and utilize supporting component to pass a stay 15 fixed stay, the port department of body 16 inserts on a stay 15, it is outside to promote mount 12 slip laminating body 16 on the frame 11, the output of a motor 13 rotates, drive wheel 14 and rotate, polish the lateral wall of body 16, utilize a stay 15 to insert the inside support of body 16, reduced and produced deformation when body 16 port is polished, thereby the efficiency of body 16 processing has been improved.

As shown in fig. 1 to 4, the support assembly includes a support frame 2, a rotary rod 21 and a wheel disc 22; the support frame 2 is fixedly connected to the top end of the frame 11; the rotating rod 21 is rotatably connected to the inner side wall of the support frame 2; the wheel disc 22 is fixedly connected to the outer part of the rotating rod 21, and a support column 15 is rotatably connected to the inner side wall of the wheel disc 22; when body 16 is fixed in the inside of organism 1, for supporting a dagger 15, install a dagger 15 at the inside wall of rim plate 22 to rely on bull stick 21 to rotate the inside wall of connecting at support frame 2, play the effect of supporting a dagger 15, after fixed to rim plate 22, insert a dagger 15 port department of body 16, can polish body 16 port department, produced deformation when having reduced body 16 port and polishing.

A second support column 3 is fixedly connected to the outer part of the wheel disc 22; a third brace 31 is fixedly connected to the outer part of the wheel disc 22; a four-number stay 32 is fixedly connected to the outer part of the wheel disc 22; when polishing the 16 ports of body to different thicknesses, because a dagger 15 can not insert in the thinner body 16, so fix the outside at rim plate 22 with No. two daggers 3, no. three daggers 31 and No. four daggers 32 respectively for insert the support to the body 16 of different thicknesses, can rotate rim plate 22 according to the body 16 of different thicknesses when polishing, adjust to suitable position insert body 16 inside can, play the effect of polishing to different thickness bodies 16.

The outer part of the rotating rod 21 far away from the wheel disc 22 is fixedly connected with a rotating wheel 4; a plurality of groups of grooves are formed outside the rotating wheel 4; a fixed block 41 is fixedly connected to the outer part of the support frame 2; a limiting bolt 42 is inserted into the wheel disc 22, and the limiting bolt 42 penetrates through the fixing block 41; an elastic part 43 is sleeved outside the limiting bolt 42; when rim plate 22 rotates the adjusting position, in order to be fixed with a pillar 15, after adjusting a position of pillar 15, utilize spacing bolt 42 to run through fixed block 41, and insert in the corresponding jack of rim plate 22 inner wall, it is spacing to rely on elastic component 43 to draw spacing bolt 42, play the fixed spacing effect to a pillar 15, and when rotating rim plate 22, can grip in the outside recess of runner 4, it drives bull stick 21 and rotates the inside wall at support frame 2 to rotate runner 4, drive rim plate 22 and rotate the regulation.

The guide rod 5 is sleeved outside the first support column 15; a limiting sleeve 51 is sleeved outside the first support column 15; when inserting the polishing to 16 ports of body, because the tip of a dagger 15 differs little with body 16's opening diameter, lead to a dagger 15 to be difficult to aim at body 16 inside fast and insert, so utilize guide bar 5 to fix the tip position at a dagger 15, rely on the inclined plane laminating body 16's of guide bar 5 inside wall sliding insertion, play direction male effect, utilize stop collar 51 to fix the lateral wall at a dagger 15 simultaneously, be used for the spacing use of body 16, be convenient for spacing to polish to the position of polishing, and No. two daggers 3, the equal rigid coupling in outside of No. three daggers 31 and No. four daggers 32 has guide bar 5 and stop collar 51 of equidimension not, all be the supplementary effect of polishing of suitability.

As shown in fig. 1 to 6, a threaded rod 6 is connected to the inner side wall of the first support column 15 in a threaded manner; four groups of slope blocks 61 are fixedly connected to the outer part of the threaded rod 6 and are positioned in the guide rod 5; the inner side wall of the guide rod 5 is connected with four groups of matching sliding blocks 62 in a sliding manner, and the bottom ends of the matching sliding blocks 62 are arc-shaped; the outer parts of the four groups of matched sliding blocks 62 are fixedly connected with supporting plates 63; the outer part of the supporting plate 63 is fixedly connected with an anti-skid pad 64; when the diameter of the mouth of pipe internal diameter of part body 16 and a dagger 15 has the deviation, the outside of holding threaded rod 6 is rotated, threaded rod 6 and the inner wall screw-thread fit of a dagger 15, drive the circular arc bottom that multiunit sloping block 61 rotated laminating cooperation slider 62, utilize the domatic direction of sloping block 61, with cooperation slider 62 jack-up, the backup pad 63 on cooperation slider 62 top outwards supports, non-slip mat 64 laminates antiskid on the inner wall of body 16, no. two daggers 3, all be provided with the support piece that corresponds the size in No. three daggers 31 and No. four daggers 32, play the effect to the inside support of body 16, play simultaneously to the fixed spacing effect of a dagger 15.

As shown in fig. 1 and 7, a first gear 7 is rotatably connected to the inner side wall of the machine body 1; two groups of electric push rods 71 are arranged in the first gear 7, and the two groups of electric push rods 71 are symmetrically arranged; the output end of the electric push rod 71 is fixedly connected with a press plate 72; when body 16 is fixed at the inner wall of organism 1, be not convenient for polish to the port circumference of body 16, so utilize a gear 7 to rotate and connect on the inner wall of organism 1, and extend relatively with two sets of electric push rod 71 outputs, drive two sets of clamp plates 72 with body 16 centre gripping in the inside of organism 1, it is fixed at the inner wall of body 16 that multiunit backup pad 63 supports simultaneously, when rotating a gear 7 rotatory, drive body 16 and a dagger 15 and rotate simultaneously, usable wheel 14 of polishing is polished to the port circumference of body 16, improve the effect of polishing.

A second motor 8 is arranged in the machine body 1; the output end of the second motor 8 is fixedly connected with a second gear 81; the second gear 81 is meshed with the first gear 7; when the circumference of the port of the pipe body 16 is polished, the output end of the second motor 8 is utilized to rotate, the second gear 81 is driven to rotate along with the output end of the second motor, and the teeth of the second gear 81 are meshed with the teeth of the first gear 7, so that the first gear 7 rotates along with the output end of the second motor, the pipe body 16 is driven to rotate and polish, and the effect of automatically rotating and polishing the pipe body 16 is achieved.

As shown in fig. 1 to 4, four sets of collecting plates 9 are inserted to the outside of the wheel disc 22; the top end of the frame 11 is provided with a dust collecting groove 91; a baffle 92 is fixedly connected to the outside of the fixed frame 12; can produce the sweeps when 16 ports of body polish, in order to collect the clearance to the sweeps, peg graft the outside position at rim plate 22 with multiunit collecting plate 9, collecting plate 9's shape is curved arcuation, the sweeps is polished when dropping, can drop to collecting plate 9's tip and collect, and a small amount of sweeps can fall into dust collecting tank 91 and locate to collect, play and collect the sweeps of polishing, the effect of the clearance of being convenient for, baffle 92 fixes the spout department at mount 12 simultaneously, reduce the sweeps and get into in mount 12's the spout, influence mount 12's slip.

Example two

As shown in fig. 8, a first comparative example, in which another embodiment of the present invention is: a rubber pad 93 is fixedly connected to the outer part of the pressing plate 72; a plurality of groups of bumps 94 are fixedly connected to the outer part of the rubber pad 93; when the surface of the pipe body 16 is smooth, the two groups of pressing plates 72 are used for clamping, so that slipping is easy to occur, rubber pads 93 are fixedly connected to the outer portions of the pressing plates 72, the plurality of groups of bumps 94 are matched with the side wall of the pipe body 16, the pipe body 16 is prevented from slipping and fixed, meanwhile, the rubber pads 93 are tightly attached to the side wall of the pipe body 16, and clamping tightness of the pressing plates 72 is further improved.

During the working process, when the cross-section ports of the pipe bodies 16 with different thicknesses are polished, the pipe bodies 16 penetrate through the interior of the machine body 1, the output ends of the two groups of electric push rods 71 extend to drive the two groups of pressing plates 72 to clamp and fix the pipe bodies 16, the rubber pads 93 and the multiple groups of lugs 94 are matched to be attached to the exterior of the pipe bodies 16 to achieve the effect of enhancing the clamping tightness in an anti-skidding manner, the first support column 15, the second support column 3, the third support column 31 and the fourth support column 32 are selected to be inserted into the interior of the pipe bodies 16 to be supported according to the inner diameter of the pipe bodies 16, the limiting bolts 42 penetrate through the fixing blocks 41 to be inserted into the interior of the wheel disc 22 to achieve the effect of fixing the wheel disc 22 and reducing the deformation of the cross-section ports when the pipe bodies 16 are polished, the pipe bodies 16 are sleeved on the exterior of the first support column 15, and the interior of the pipe bodies 16 is supported by the first support column 15, if there is a space in the inside of body 16 and a support column 15 diameter, rotatable threaded rod 6, threaded rod 6 drives multiunit sloping block 61 and with cooperation slider 62 jack-up, multiunit cooperation slider 62 drives backup pad 63 outwards expansion respectively, support the inner wall of body 16, play and support fixed effect to adapting to the inside of body 16, rotate with a motor 13 output, drive the port department of polishing wheel 14 to body 16 and polish, the output of cooperation No. two motor 8 rotates, drive No. two gear 81 and a gear 7 meshing rotation, it polishes to drive the circumference of body 16 port, improve the effect of polishing to body 16 port, when the sweeps of polishing drops, utilize collecting plate 9 to install on rim plate 22, play the effect of collecting the sweeps, some sweeps can drop in collecting vat 91, play the effect of supplementary collection sweeps.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and so on.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a galvanized pipe fitting port polisher which characterized in that: comprises a machine body (1); a frame (11) is fixedly connected to the outside of the machine body (1); a fixed frame (12) is fixedly connected to the top end of the frame (11); a first motor (13) is fixedly connected inside the fixing frame (12); the output end of the first motor (13) is fixedly connected with a grinding wheel (14), and the grinding wheel (14) is positioned in the fixed frame (12); a support column (15) is arranged at the top end of the frame (11); the top end of the frame (11) is provided with a supporting component, and the supporting component is used for fixing a support column (15); a pipe body (16) is installed on the inner side wall of the machine body (1).

2. The galvanized pipe port grinder of claim 1, wherein: the supporting component comprises a supporting frame (2), a rotating rod (21) and a wheel disc (22); the support frame (2) is fixedly connected to the top end of the rack (11); the rotating rod (21) is rotatably connected to the inner side wall of the support frame (2); the rotary table (22) is fixedly connected to the outer portion of the rotary rod (21), and a support column (15) is rotatably connected to the inner side wall of the rotary table (22).

3. The port grinder for galvanized pipe according to claim 2, characterized in that: a second brace strut (3) is fixedly connected to the outer part of the wheel disc (22); a third brace strut (31) is fixedly connected to the outer part of the wheel disc (22); and four brace struts (32) are fixedly connected to the outer part of the wheel disc (22).

4. The port grinder for galvanized pipe according to claim 3, characterized in that: the outer part of the rotating rod (21) far away from the wheel disc (22) is fixedly connected with a rotating wheel (4); a plurality of groups of grooves are formed outside the rotating wheel (4); a fixed block (41) is fixedly connected to the outer part of the support frame (2); a limiting bolt (42) is inserted into the wheel disc (22), and the limiting bolt (42) penetrates through the fixing block (41); an elastic piece (43) is sleeved outside the limiting bolt (42).

5. The galvanized pipe port grinder of claim 4, wherein: a guide rod (5) is sleeved outside the first support column (15); and a limiting sleeve (51) is sleeved outside the first support column (15).

6. The port grinder for galvanized pipe according to claim 5, characterized in that: the inner side wall of the first support column (15) is in threaded connection with a threaded rod (6); four groups of slope blocks (61) are fixedly connected to the outer part of the threaded rod (6) and are positioned in the guide rod (5); the inner side wall of the guide rod (5) is connected with four groups of matching sliding blocks (62) in a sliding manner, and the bottom ends of the matching sliding blocks (62) are arc-shaped; the outer parts of the four groups of matched sliding blocks (62) are fixedly connected with supporting plates (63); and the outer part of the supporting plate (63) is fixedly connected with a non-slip mat (64).

7. The port grinder for galvanized pipe according to claim 6, characterized in that: the inner side wall of the machine body (1) is rotatably connected with a first gear (7); two groups of electric push rods (71) are arranged in the first gear (7), and the two groups of electric push rods (71) are symmetrically arranged; the output end of the electric push rod (71) is fixedly connected with a pressure plate (72).

8. The galvanized pipe port grinder of claim 7, wherein: a second motor (8) is arranged in the machine body (1); the output end of the second motor (8) is fixedly connected with a second gear (81); the second gear (81) is meshed with the first gear (7).

9. The port grinder for galvanized pipe according to claim 8, characterized in that: four groups of collecting plates (9) are inserted outside the wheel disc (22); the top end of the frame (11) is provided with a dust collecting groove (91); and a baffle (92) is fixedly connected to the outer part of the fixed frame (12).

10. The galvanized pipe port grinder as set forth in claim 9, wherein: a rubber pad (93) is fixedly connected to the outer part of the pressing plate (72); and a plurality of groups of convex blocks (94) are fixedly connected to the outer part of the rubber pad (93).