CN118528151A - A stainless steel pipe inner and outer surface abrasive jetting device - Google Patents

Abstract

The invention provides a stainless steel pipe inner and outer surface abrasive spraying device, belongs to the technical field of stainless steel pipes, and solves the technical problems that sand blasting cannot be well utilized in the prior art, so that polishing effect is affected, and the like. This inside and outside surface abrasive material injection apparatus of nonrust steel pipe, the on-line screen storage device comprises a base, first spout has been seted up to the upside of base, the inside of first spout is fixed with first motor, the output axle head of first motor is fixed with two-way threaded rod, threaded connection has two movable plates on the two-way threaded rod, be fixed with the second motor on the movable plate, the output axle head of second motor is fixed with the grip slipper, the second spout has all been seted up at two parts around the upside of base, the inside of second spout is fixed with the third motor, the output axle head of third motor is fixed with reciprocal threaded rod, threaded connection has the support on the reciprocal threaded rod, the support upper end is fixed with the storage box. The invention has the advantages of realizing the cooperative matching of the sand blasting and the polishing assembly and improving the polishing efficiency and quality.

Description

A stainless steel pipe inner and outer surface abrasive jetting device

Technical Field

The invention belongs to the technical field of stainless steel pipes and relates to a spraying device, in particular to an abrasive spraying device for inner and outer surfaces of a stainless steel pipe.

Background Art

During the processing of stainless steel bars, black oxide scale will be produced due to the need for rolling, edge binding, welding or artificial surface heating. At present, when sandblasting the black oxide scale, a manually operated sandblasting gun is used to sandblast the stainless steel, which has low efficiency in removing the oxide scale and wastes manpower.

After searching, it is found that a Chinese patent document discloses a device for abrasive jetting treatment of the surface of a stainless steel bar [Application No.: 202311306649.1; Publication No.: CN 117020971 B]. This jetting treatment device includes a main frame device placed on a table; a pipe clamping device is provided on the main frame device, and the pipe clamping device is used to clamp the stainless steel bar to limit the radial freedom of the stainless steel bar; a movable device is provided on the main frame device, and the main frame device is used to drive the movable device to move and rotate the stainless steel bar at the same time, and the movable device is used to perform abrasive jetting treatment on the stainless steel bar. The main frame device provided in this device can drive the stainless steel bar to rotate, and at the same time drive the grinding wheel mechanism and the jetting mechanism to move along the axial direction of the stainless steel bar, so as to effectively perform abrasive jetting treatment on the surface of the stainless steel bar without dead angles, and the treatment efficiency is high; the jetting mechanism can continuously spray sand particles from the nozzle to the stainless steel bar, and the sandblasting combined with the grinding wheel to grind the stainless steel bar further improves the effect of surface abrasive jetting treatment.

Although the main frame device disclosed in the patent can drive the stainless steel rod to rotate, and at the same time drive the grinding wheel mechanism and the spraying mechanism to move along the axial direction of the stainless steel rod, thereby effectively performing abrasive spraying treatment on the surface of the stainless steel rod without dead angles, the sandblasting part and the grinding wheel part of the device are located at different positions, and the sandblasting and grinding wheel grinding operations are carried out separately, and the sandblasting cannot be well utilized, thereby affecting the grinding and polishing effect.

Summary of the invention

The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose an abrasive jetting device for the inner and outer surfaces of a stainless steel pipe. The technical problem to be solved by the invention is: how to achieve coordinated cooperation between sandblasting and grinding components to improve the efficiency and quality of grinding and polishing.

The purpose of the present invention can be achieved by the following technical solutions:

A device for spraying abrasives on the inner and outer surfaces of a stainless steel pipe comprises a base, a first slide groove is provided on the upper side of the base, a first motor is fixed inside the first slide groove, a bidirectional threaded rod is fixed on the output shaft end of the first motor, two movable plates are threadedly connected on the bidirectional threaded rod, a second motor is fixed on the movable plate, a clamping seat is fixed on the output shaft end of the second motor, second slide grooves are provided on both the front and rear parts of the upper side of the base, a third motor is fixed inside the second slide groove, a reciprocating threaded rod is fixed on the output shaft end of the third motor, a bracket is threadedly connected on the reciprocating threaded rod, and the upper end of the bracket A material storage box is fixed, an electric telescopic rod is fixed inside the bracket, a first semicircular ring and a second semicircular ring are fixed to the telescopic ends of the two first electric telescopic rods respectively, a spraying mechanism is arranged on the bracket, the spraying mechanism is connected with the material storage box, the spraying mechanism is connected with a feeding seat, cavities are opened inside the first semicircular ring and the second semicircular ring, the feeding seat is connected with the cavity through a feeding port, a triangular guide block is arranged at the lower end of the inner part of the feeding seat, a plurality of spraying ports and grinding components are fixed on the inner circumferences of the first semicircular ring and the second semicircular ring, the spraying ports and the grinding components are connected with the cavity through through holes.

The working principle of the present invention is: when working, the stainless steel pipe is placed between the two clamping seats, the bidirectional threaded rod is driven to rotate by the first motor, and the bidirectional threaded rod drives the two movable plates to move toward each other, so that the two clamping seats are close to each other, thereby clamping the two ends of the stainless steel pipe, and then the first semicircular ring and the second semicircular ring are driven close by the electric telescopic rod, so that the grinding assembly contacts the surface of the stainless steel pipe, and the second motor, the third motor and the spraying mechanism are turned on, so that the stainless steel rotates while the grinding assembly reciprocates left and right, and the stainless steel pipe is ground and polished by the grinding assembly, and the stainless steel pipe is ground by the abrasive sprayed from the spray port, and the grinding assembly and the spray port are arranged at intervals, so that the abrasive can cooperate with the grinding assembly, which greatly improves the efficiency of grinding and polishing.

A first semicircular cover is fixed on both the front and rear sides of the first semicircular ring, and a second semicircular cover is fixed on both the front and rear sides of the second semicircular ring. The first semicircular cover and the second semicircular cover on the same side form a collecting cover. A discharge pipe is fixed on the second semicircular cover, a telescopic tube is fixed on the other end of the discharge pipe, a circulating pipe is fixed on the other end of the telescopic rod, a circulating pipe is provided on the circulating pipe, and the other end of the circulating pipe is connected to the storage box.

With the above structure, during operation, a closed space is formed by the collecting cover in cooperation with the first semicircular ring and the second semicircular ring, so that the ejected abrasive will not splash outward. On the one hand, the abrasive can rebound multiple times through the collecting cover, the first semicircular ring and the second semicircular ring to improve the grinding effect. On the other hand, the abrasive will not splash and affect the environment. The abrasive enters the circulation pipe through the discharge pipe and the telescopic rod and is then sent into the storage box, which is convenient for collecting and reusing the abrasive and reducing the cost of use.

A plurality of arc-shaped plates are evenly distributed on the inner peripheral arm of the cavity.

With the above structure, the abrasive can be lifted up multiple times by the arc plate when entering the cavity, preventing the abrasive from agglomerating under the action of gravity, thereby making the abrasive and the airflow mix evenly and improving the grinding effect of the stainless steel pipe.

The grinding assembly includes a hollow seat, which is fixedly connected to the first semicircular ring and the second semicircular ring respectively, and the interior of the hollow seat is slidably connected to a limit plate, a first spring is fixed between the limit plate and the interior of the hollow seat, a grinding block is fixed on the limit plate, an injection channel is opened in the middle of the grinding block, an injection pipe is slidably connected in the injection channel, and the injection pipe is fixedly connected to the through hole.

With the above structure, when the grinding block contacts the stainless steel tube, the first spring can be squeezed to make the grinding block retract into the hollow seat for a section. Therefore, during grinding, the elastic force of the first spring can keep the grinding block and the stainless steel tube in contact at all times, thereby ensuring the grinding effect. At the same time, the abrasive can be ejected through the injection pipe and the injection channel and enter between the grinding block and the stainless steel tube, so that the grinding block can grind and polish the stainless steel tube with the abrasive, thereby greatly improving the grinding and polishing effect.

A first inclined block is fixed to the inner bottom of the first semicircular cover, and a second inclined block is fixed to the inner bottom of the second semicircular cover. The upper inclined surfaces of the first inclined block and the second inclined block are located in the same plane, and the lower end of the second inclined block is flush with the lower end of the inner circumference of the discharge pipe.

By adopting the above structure, the inclined surface formed by the first inclined block and the second inclined block can be used to guide the abrasive, so that all the abrasive can enter the discharge pipe, preventing the abrasive from accumulating on the arc surface at the bottom of the first semicircular cover and the second semicircular cover, causing waste.

The spraying assembly includes a transfer box, which is fixedly connected to the bracket, an intermittent feeding assembly is arranged between the transfer box and the storage box, the lower end of the transfer box is connected to the feeding seat through a discharge pipe, a fourth motor is fixed to the left side of the transfer box, a hollow shaft is fixed to the output shaft end of the fourth motor, a plurality of stirring blades are fixed on the hollow shaft, an air supply cavity connected to the hollow shaft is provided inside the stirring blade, a plurality of air injection ports are provided on the stirring blade, an air guide seat is fixed to the right end of the transfer box, the air guide seat is connected to the hollow shaft, the air guide seat is connected to a refrigeration box through a pipeline, and an air supply pump is fixed on the refrigeration box.

By adopting the above structure, during feeding, the abrasive in the storage box is intermittently fed into the transfer box through the intermittent feeding assembly, and the air pump feeds the low-temperature air in the refrigeration box into the hollow shaft through the air guide seat, and then sprays it into the transfer box through the air delivery cavity and the air jet port. At the same time, the fourth motor and the air delivery pump are turned on, the fourth motor drives the hollow shaft to rotate, and the hollow shaft drives the stirring blades to rotate. The stirring blades are used to make the abrasive evenly dissipate into the low-temperature air, and then are sprayed out through the spray port and the spray channel. The setting of this structure can not only improve the effect of abrasive dissipation, but also use low-temperature air to cool the stirring blades, hollow shafts and grinding blocks to prevent excessive temperature during grinding and stirring and grinding of stainless steel pipes, thereby protecting the device and extending the service life of the device.

The grinding block is provided with a plurality of curved flow-dividing channels, one end of the flow-dividing channel is communicated with the injection channel, and the other end of the flow-dividing channel is communicated with the outside of the grinding block.

With the above structure, during operation, the diversion channel can be used to divert the abrasive in the injection channel to improve the uniformity of the abrasive spraying. At the same time, the low-temperature abrasive can be used to evenly cool the grinding block, further improving the cooling effect on the grinding block.

The intermittent feeding assembly includes a feeding pipe, the lower end of which is connected to the transfer box, the upper end of which is connected to the storage box, a sliding sleeve is fixed to the inside of the feeding pipe through a support rod, a sliding rod is slidably connected to the slider, the upper end of the sliding rod extends into the storage box and is fixed with a conical seat, the lower end of the sliding rod extends into the transfer box and is fixed with an arc plate, the arc plate corresponds to the middle stirring rod, and a plurality of leakage holes are opened on the arc plate.

With the above structure, during operation, the hollow shaft drives the stirring blade to rotate. When the stirring blade contacts the arc plate, the arc plate rises under the arc surface of the arc plate, thereby driving the conical seat to rise through the sliding rod, so that the conical seat is separated from the feed end of the feed pipe, and the abrasive enters the transfer box through the feed pipe. When the stirring blade is separated from the arc plate, the arc plate and the conical seat descend under the action of gravity, so that the conical seat re-seals the upper end of the feed pipe, thereby realizing intermittent feeding, preventing continuous feeding from causing abrasive accumulation and affecting the spraying effect, and can also reduce the loss of abrasive. At the same time, the structure is simple and convenient, does not require additional drive, has a low failure rate, and is easy to maintain.

A plurality of clamping components are arranged inside the clamping seat, and the clamping components include a plurality of guide rods and contact plates. The guide rods are fixedly connected to the clamping seat, and two support plates are slidably connected to the guide rods. Clamping plates are fixed to the ends of the support plates, and clamping blocks are fixed to the opposite surfaces of the two clamping plates. The opposite surfaces of the two clamping plates are hinged with driving rods, and the other ends of the two driving rods are hinged to the contact plates. A second spring is fixed between the contact plates and the clamping seat.

With the above structure, when the two clamping seats move toward each other, the end of the stainless steel pipe first enters between the two clamping blocks, and then contacts the contact plate to push the contact plate. The contact plate drives the two clamping blocks to move toward each other through two driving rods to clamp and fix the stainless steel pipe. This structure has high clamping stability, and clamps inside and outside at the same time with the same clamping force. While increasing the clamping force, it can prevent the stainless steel pipe from being damaged, and is highly practical.

Compared with the prior art, the abrasive jetting device for the inner and outer surfaces of stainless steel pipes has the following advantages:

1. During operation, the stainless steel pipe is placed between two clamping seats, and the bidirectional threaded rod is driven to rotate by the first motor, and the bidirectional threaded rod drives the two movable plates to move toward each other, so that the two clamping seats are close to each other, thereby clamping the two ends of the stainless steel pipe, and then the first semicircular ring and the second semicircular ring are driven close by the electric telescopic rod, so that the grinding assembly contacts the surface of the stainless steel pipe, and the second motor, the third motor and the spraying mechanism are turned on, so that the stainless steel rotates while the grinding assembly reciprocates left and right, and the stainless steel pipe is ground and polished by the grinding assembly, and the abrasive sprayed from the spray port is used to grind the stainless steel pipe at the same time, and the grinding assembly and the spray port are arranged at intervals, so that the abrasive can cooperate with the grinding assembly, which greatly improves the efficiency of grinding and polishing.

2. The structural setting of the collecting hood, when working, forms a closed space through the collecting hood in cooperation with the first semicircular ring and the second semicircular ring, so that the ejected abrasive will not splash outward. On the one hand, the abrasive can rebound multiple times through the collecting hood, the first semicircular ring and the second semicircular ring to improve the grinding effect. On the other hand, the abrasive will not splash and affect the environment. The abrasive enters the circulation pipe through the discharge pipe and the telescopic rod, and is then sent into the storage box, which is convenient for collecting and reusing the abrasive and reducing the cost of use.

3. The setting of the arc plate can make the abrasive be lifted up by the arc plate for many times when entering the cavity, so as to prevent the abrasive from piling up under the action of gravity, thereby making the abrasive and the airflow mixed evenly and improving the grinding effect of the stainless steel pipe.

4. The setting of the grinding assembly is that when the grinding block contacts the stainless steel pipe, the first spring can be squeezed to make the grinding block retract into the hollow seat for a section, so that during grinding, the elastic force of the first spring can keep the grinding block and the stainless steel pipe in contact at all times to ensure the grinding effect. At the same time, the abrasive can be ejected through the injection pipe and the injection channel and enter between the grinding block and the stainless steel pipe, so that the grinding block can grind and polish the stainless steel pipe with the abrasive, which greatly improves the grinding and polishing effect.

5. The setting of the spraying component is to intermittently feed the abrasive in the storage box into the transfer box through the intermittent feeding component, and the air pump feeds the low-temperature air in the refrigeration box into the hollow shaft through the air guide seat, and then sprays it into the transfer box through the air delivery cavity and the air jet port. At the same time, the fourth motor and the air delivery pump are turned on, and the fourth motor drives the hollow shaft to rotate, and the hollow shaft drives the stirring blade to rotate. The stirring blade is used to make the abrasive evenly escape into the low-temperature air, and then it is sprayed out through the spray port and the spray channel. The setting of this structure can not only improve the effect of abrasive escape, but also use low-temperature air to cool the stirring blade, hollow shaft and grinding block to prevent the temperature from being too high during grinding and stirring and grinding of stainless steel pipes, thereby protecting the device and extending the service life of the device.

6. The intermittent feeding component is set up, and the hollow shaft drives the stirring blade to rotate. When the stirring blade contacts the arc plate, the arc plate rises under the arc surface of the arc plate, thereby driving the conical seat to rise through the sliding rod, so that the conical seat is separated from the feeding end of the feeding pipe, and the abrasive enters the transfer box through the feeding pipe. When the stirring blade is separated from the arc plate, the arc plate and the conical seat descend under the action of gravity, so that the conical seat re-blocks the upper end of the feeding pipe, thereby realizing intermittent feeding, preventing continuous feeding from causing abrasive accumulation and affecting the spraying effect, and can also reduce the loss of abrasive. At the same time, the structure is simple and convenient, does not require additional drive, has a low failure rate, and is easy to maintain.

7. The structural setting of the clamping assembly is that when the two clamping seats move toward each other, the end of the stainless steel pipe first enters between the two clamping blocks, and then contacts the contact plate to push the contact plate. The contact plate drives the two clamping blocks to move toward each other through two driving rods to clamp and fix the stainless steel pipe. This structure has high clamping stability, and clamps inside and outside at the same time with the same clamping force. While increasing the clamping force, it can prevent the stainless steel pipe from being clamped and is highly practical.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of a base in the present invention.

FIG. 3 is a schematic diagram of the structure of the support in the present invention.

FIG. 4 is a schematic diagram of the structure of the first semicircular ring and the second semicircular ring in the present invention.

FIG. 5 is a schematic diagram of the structure of the grinding assembly of the present invention.

FIG. 6 is a schematic structural diagram of the material collecting cover in the present invention.

FIG. 7 is a schematic diagram of the structure of the spraying assembly of the present invention.

FIG. 8 is a partial enlarged view of point A in FIG. 7 .

FIG. 9 is a schematic diagram of the structure of the gap feeding assembly of the present invention.

FIG. 10 is a schematic structural diagram of the clamping seat in the present invention.

FIG. 11 is a schematic diagram of a partial structure of the clamping assembly of the present invention.

In the figure, 1, base; 2, moving plate; 3, second motor; 4, clamping seat; 5, bracket; 6, storage box; 7, third motor; 8, reciprocating threaded rod; 9, first motor; 10, bidirectional threaded rod; 11, circulation pipe; 12, electric telescopic rod; 13, first semicircular cover; 14, second semicircular cover; 15, telescopic pipe; 16, circulation pump; 17, second semicircular ring; 18, first semicircular ring; 19, feeding seat; 20, triangular guide block; 21, feeding port; 22, cavity; 23, arc plate; 24, through hole; 25, spray port; 26, hollow seat; 27, grinding block; 28, limit plate; 29 , first spring; 30, injection pipe; 31, diversion channel; 32, injection channel; 33, first tilting block; 34, second tilting block; 35, discharge pipe; 36, transfer box; 37, fourth motor; 38, hollow shaft; 39, stirring blade; 40, feed pipe; 41, discharge pipe; 42, sliding sleeve; 43, air guide seat; 44, refrigeration box; 45, air pump; 46, jet nozzle; 47, sliding rod; 48, conical seat; 49, arc plate; 50, leakage hole; 51, guide rod; 52, support plate; 53, clamping plate; 54, clamping block; 55, second spring; 56, trigger rod; 57, resistance plate.

DETAILED DESCRIPTION

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in Figures 1 to 11, the abrasive jetting device for the inner and outer surfaces of a stainless steel pipe comprises a base 1, a first chute is provided on the upper side of the base 1, a first motor 9 is fixed inside the first chute, a bidirectional threaded rod 10 is fixed to the output shaft end of the first motor 9, two movable plates 2 are threadedly connected to the bidirectional threaded rod 10, a second motor 3 is fixed to the movable plate 2, a clamping seat 4 is fixed to the output shaft end of the second motor 3, second chute is provided at both the front and rear parts of the upper side of the base 1, a third motor 7 is fixed inside the second chute, a reciprocating threaded rod 8 is fixed to the output shaft end of the third motor 7, a bracket 5 is threadedly connected to the reciprocating threaded rod 8, and a material storage box is fixed to the upper end of the bracket 5. 6. An electric telescopic rod 12 is fixed inside the bracket 5, and the telescopic ends of the two first electric telescopic rods 12 are respectively fixed with a first semicircular ring 18 and a second semicircular ring 17. A spraying mechanism is provided on the bracket 5, and the spraying mechanism is connected to the storage box 6. The spraying mechanism is connected to a feeding seat 19. A cavity 22 is opened inside the first semicircular ring 18 and the second semicircular ring 17. The feeding seat 19 is connected to the cavity 22 through a feeding port 21. A triangular guide block 20 is provided at the lower end of the feeding seat 19. A plurality of spraying ports 25 and a grinding assembly are fixed to the inner circumference of the first semicircular ring 18 and the second semicircular ring 17. The spraying ports 25 and the grinding assembly are connected to the cavity 22 through a through hole 24.

During operation, the stainless steel pipe is placed between the two clamping seats 4, and the bidirectional threaded rod 10 is driven to rotate by the first motor 9, and the bidirectional threaded rod 10 drives the two movable plates 2 to move toward each other, so that the two clamping seats 4 are close to each other, thereby clamping the two ends of the stainless steel pipe, and then the first semicircular ring 18 and the second semicircular ring 17 are driven close by the electric telescopic rod 12, so that the grinding assembly contacts the surface of the stainless steel pipe, and the second motor 3, the third motor 7 and the spraying mechanism are turned on, so that while the stainless steel rotates, the grinding assembly reciprocates left and right, and the stainless steel pipe is ground and polished by the grinding assembly, and the stainless steel pipe is ground by the abrasive sprayed from the spray port 25 at the same time, and the grinding assembly and the spray port 25 are arranged at intervals, so that the abrasive can cooperate with the grinding assembly, which greatly improves the efficiency of grinding and polishing.

The first semicircular cover 13 is fixed to the front and rear sides of the first semicircular ring 18, and the second semicircular cover 17 is fixed to the front and rear sides of the second semicircular ring 17. The first semicircular cover 13 and the second semicircular cover 14 on the same side form a collecting cover, and a discharge pipe 35 is fixed to the second semicircular cover 14, and the other end of the discharge pipe 35 is fixed to the telescopic tube 15, and the other end of the telescopic rod is fixed to the circulation pipe 11, and the circulation pipe 11 is provided with a circulation pump 16, and the other end of the circulation pipe 11 is connected to the storage box 6.

With the above structure, during operation, a closed space is formed by the collecting hood in cooperation with the first semicircular ring 18 and the second semicircular ring 17, so that the ejected abrasive will not splash outward. On the one hand, the abrasive can rebound multiple times through the collecting hood, the first semicircular ring 18 and the second semicircular ring 17 to improve the grinding effect. On the other hand, the abrasive will not splash and affect the environment. The abrasive enters the circulation pipe 11 through the discharge pipe 35 and the telescopic rod, and is then sent into the storage box 6, which is convenient for collecting and reusing the abrasive and reducing the cost of use.

A plurality of arc plates 23 are evenly distributed on the inner peripheral arm of the cavity 22. With the above structure, when the abrasive enters the cavity 22, it is lifted up multiple times by the arc plates 23, so as to prevent the abrasive from agglomerating under the action of gravity, thereby making the abrasive and the airflow evenly mixed, and improving the grinding effect of the stainless steel pipe.

The grinding assembly includes a hollow seat 26, which is fixedly connected to the first semicircular ring 18 and the second semicircular ring 17 respectively. The interior of the hollow seat 26 is slidably connected to a limit plate 28, and a first spring 29 is fixed between the limit plate 28 and the interior of the hollow seat 26. A grinding block 27 is fixed on the limit plate 28, and an injection channel 32 is opened in the middle of the grinding block 27. An injection pipe 30 is slidably connected in the injection channel 32, and the injection pipe 30 is fixedly connected to the through hole 24.

With the above structure, when the grinding block 27 contacts the stainless steel tube, the first spring 29 can be squeezed to make the grinding block 27 retract into the hollow seat 26 for a certain distance. Therefore, during grinding, the elastic force of the first spring 29 can keep the grinding block 27 in contact with the stainless steel tube at all times to ensure the grinding effect. At the same time, the abrasive can be ejected through the injection pipe 30 and the injection channel 32 and enter between the grinding block 27 and the stainless steel tube, so that the grinding block 27 can grind and polish the stainless steel tube with the abrasive, which greatly improves the grinding and polishing effect.

A first inclined block 33 is fixed to the inner bottom of the first semicircular cover 13, and a second inclined block 34 is fixed to the inner bottom of the second semicircular cover 14. The upper inclined surfaces of the first inclined block 33 and the second inclined block 34 are located in the same plane, and the lower end of the second inclined block 34 is flush with the lower end of the inner circumference of the discharge pipe 35.

By adopting the above structure, the inclined surface formed by the first inclined block 33 and the second inclined block 34 can be used to guide the abrasive, so that all the abrasive can enter the discharge pipe 35, preventing the abrasive from accumulating on the curved surface at the bottom of the first semicircular cover 13 and the second semicircular cover 14 and causing waste.

The spraying assembly includes a transfer box 36, which is fixedly connected to the bracket 5, and an intermittent feeding assembly is arranged between the transfer box 36 and the storage box 6. The lower end of the transfer box 36 is connected to the feeding seat 19 through a discharge pipe 41, and a fourth motor 37 is fixed to the left side of the transfer box 36, and a hollow shaft 38 is fixed to the output shaft end of the fourth motor 37, and a plurality of stirring blades 39 are fixed on the hollow shaft 38. An air supply cavity connected to the hollow shaft 38 is provided inside the stirring blade 39, and a plurality of air injection ports 46 are provided on the stirring blade 39. An air guide seat 43 is fixed to the right end of the transfer box 36, and the air guide seat 43 is connected to the hollow shaft 38. The air guide seat 43 is connected to a refrigeration box 44 through a pipeline, and an air supply pump 45 is fixed to the refrigeration box 44.

By adopting the above structure, during feeding, the abrasive in the storage box 6 is intermittently fed into the transfer box 36 through the intermittent feeding assembly, and the air pump 45 feeds the low-temperature air in the refrigeration box 44 into the hollow shaft 38 through the air guide seat 43, and then sprays it into the transfer box 36 through the air delivery cavity and the air jet port 46. At the same time, the fourth motor 37 and the air pump 45 are turned on, and the fourth motor 37 drives the hollow shaft 38 to rotate, and the hollow shaft 38 drives the stirring blade 39 to rotate. The stirring blade 39 is used to make the abrasive evenly escape into the low-temperature air, and then it is sprayed out through the injection port 25 and the injection channel. The arrangement of this structure can not only improve the effect of abrasive escape, but also use the low-temperature air to cool the stirring blade 39, the hollow shaft 38 and the grinding block 27 to prevent the temperature from being too high during grinding and stirring and grinding the stainless steel pipe, thereby protecting the device and extending the service life of the device.

The grinding block 27 is provided with a plurality of curved flow-dividing channels 31 , one end of the flow-dividing channel 31 is connected to the injection channel 32 , and the other end of the flow-dividing channel 31 is connected to the outside of the grinding block 27 .

With the above structure, during operation, the diversion channel 31 can be used to divert the abrasive in the injection channel 32 to improve the uniformity of the abrasive spraying. At the same time, the low-temperature abrasive can be used to evenly cool the grinding block 27 to further improve the cooling effect on the grinding block 27.

The intermittent feeding assembly includes a feed pipe 40, the lower end of which is connected to the transfer box 36, and the upper end of which is connected to the storage box 6. A sliding sleeve 42 is fixed to the interior of the feed pipe 40 through a support rod, and a sliding rod 47 is slidably connected to the slider. The upper end of the sliding rod 47 extends into the storage box 6 and is fixed with a conical seat 48, and the lower end of the sliding rod 47 extends into the transfer box 36 and is fixed with an arc plate 49, which corresponds to the middle stirring rod and has a plurality of leakage holes 50.

With the above structure, during operation, the hollow shaft 38 drives the stirring blade 39 to rotate. When the stirring blade 39 contacts the arc plate 49, the arc plate 49 rises under the arc surface of the arc plate 49, thereby driving the conical seat 48 to rise through the slide rod 47, so that the conical seat 48 is separated from the feed end of the feed pipe 40, and the abrasive enters the transfer box 36 through the feed pipe 40. When the stirring blade 39 is separated from the arc plate 49, under the action of gravity, the arc plate 49 and the conical seat 48 descend, so that the conical seat 48 re-blocks the upper end of the feed pipe 40, thereby realizing intermittent feeding, preventing continuous feeding from causing abrasive accumulation and affecting the spraying effect, and also reducing the loss of abrasive. At the same time, the structure is simple and convenient, does not require additional drive, has a low failure rate, and is easy to maintain.

A plurality of clamping components are arranged inside the clamping seat 4, and the clamping components include a plurality of guide rods 51 and contact plates 57. The guide rods 51 are fixedly connected to the clamping seat 4, and two support plates 52 are slidably connected to the guide rods 51. Clamping plates 53 are fixed to the ends of the support plates 52, and clamping blocks 54 are fixed to the opposite surfaces of the two clamping plates 53. Driving rods 56 are hinged on the opposite surfaces of the two clamping plates 53, and the other ends of the two driving rods 56 are hinged to the contact plates 57. A second spring 55 is fixed between the contact plates 57 and the clamping seat 4.

With the above structure, when the two clamping seats 4 move toward each other, the end of the stainless steel pipe first enters between the two clamping blocks 54, and then contacts the contact plate 57 to push the contact plate 57. The contact plate 57 drives the two clamping blocks 54 to move toward each other through the two driving rods 56 to clamp and fix the stainless steel pipe. This structure has high clamping stability, and clamps inside and outside at the same time with the same clamping force. While increasing the clamping force, it can prevent the stainless steel pipe from being damaged, and is highly practical.

The working principle of the present invention is as follows: during operation, the stainless steel pipe is placed between the two clamping seats 4, and the bidirectional threaded rod 10 is driven to rotate by the first motor 9, and the bidirectional threaded rod 10 drives the two movable plates 2 to move toward each other, so that the two clamping seats 4 are close to each other, and the end of the stainless steel pipe first enters between the two clamping blocks 54, and then contacts the contact plate 57, and pushes the contact plate 57. The contact plate 57 drives the two clamping blocks 54 to move toward each other through the two driving rods 56, clamps and fixes the stainless steel pipe, and then the electric telescopic rod 1 is used to move the two clamping blocks 54 toward each other. 2 drives the first semicircular ring 18 and the second semicircular ring 17 to approach each other. When the grinding block 27 contacts the stainless steel pipe, the first spring 29 can be squeezed to make the grinding block 27 retract into the hollow seat 26 for a certain distance. Therefore, during grinding, the grinding block 27 can always contact with the stainless steel pipe under the elastic force of the first spring 29 to ensure the grinding effect. The second motor 3, the third motor 7 and the fourth motor 37 are turned on to make the stainless steel rotate while the grinding assembly reciprocates left and right. The stainless steel pipe is polished by the grinding assembly. The hollow shaft 38 drives the stirring blade 39 to rotate. When the stirring blade 39 contacts the arc plate 49, the arc plate 49 is lifted up under the arc surface of the arc plate 49, thereby driving the conical seat 48 to lift up through the slide bar 47, so that the conical seat 48 is separated from the feeding end of the feeding pipe 40, and the abrasive enters the transfer box 36 through the feeding pipe 40. When the stirring blade 39 is separated from the arc plate 49, the arc plate 49 and the conical seat 48 are lowered under the action of gravity, so that the conical seat 48 blocks the upper end of the feeding pipe 40 again, thereby realizing intermittent feeding. The air pump 45 delivers the low-temperature air in the refrigeration box 44 into the hollow shaft 38 through the air guide seat 43, and then sprays it into the transfer box 36 through the air delivery cavity and the jet port 46. The fourth motor 37 drives the hollow shaft 38 to rotate, and the hollow shaft 38 drives the stirring blade 39 to rotate. The stirring blade 39 is used to make the abrasive evenly escape into the low-temperature air, and then spray it out through the spray port 25 and the spray channel. In addition, the grinding component and the spray port 25 are arranged at intervals, so that the abrasive can cooperate with the grinding component, which greatly improves the efficiency of grinding and polishing.

In summary, by configuring the first semicircular ring 18, the second semicircular ring 17, the grinding assembly, the spray port 25 and other structures, the sandblasting and grinding assemblies can be coordinated to improve the efficiency and quality of the grinding and polishing.

The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims (9)

1. A device for spraying abrasives on the inner and outer surfaces of a stainless steel pipe, comprising a base (1), characterized in that a first slide groove is provided on the upper side of the base (1), a first motor (9) is fixed inside the first slide groove, a bidirectional threaded rod (10) is fixed to the output shaft end of the first motor (9), two movable plates (2) are threadedly connected to the bidirectional threaded rod (10), a second motor (3) is fixed to the movable plate (2), a clamping seat (4) is fixed to the output shaft end of the second motor (3), a second slide groove is provided on the front and rear parts of the upper side of the base (1), a third motor (7) is fixed inside the second slide groove, a reciprocating threaded rod (8) is fixed to the output shaft end of the third motor (7), a bracket (5) is threadedly connected to the reciprocating threaded rod (8), a material storage box (6) is fixed to the upper end of the bracket (5), and the bracket An electric telescopic rod (12) is fixed inside the bracket (5), and the telescopic ends of the two first electric telescopic rods (12) are respectively fixed with a first semicircular ring (18) and a second semicircular ring (17). A spraying mechanism is arranged on the bracket (5), and the spraying mechanism is connected to the material storage box (6). The spraying mechanism is connected to the feeding seat (19). The first semicircular ring (18) and the second semicircular ring (17) are both provided with a cavity (22). The feeding seat (19) is connected with the cavity (22) through a feeding port (21). A triangular material guide block (20) is arranged at the lower end of the feeding seat (19). A plurality of spraying ports (25) and a grinding assembly are fixed on the inner circumference of the first semicircular ring (18) and the second semicircular ring (17). The spraying ports (25) and the grinding assembly are both connected with the cavity (22) through a through hole (24). 2. An abrasive jetting device for the inner and outer surfaces of a stainless steel pipe according to claim 1, characterized in that a first semicircular cover (13) is fixed on both the front and rear sides of the first semicircular ring (18), a second semicircular cover (17) is fixed on both the front and rear sides of the second semicircular ring (17), the first semicircular cover (13) and the second semicircular cover (14) on the same side form a collecting cover, a discharge pipe (35) is fixed on the second semicircular cover (14), a telescopic tube (15) is fixed on the other end of the discharge pipe (35), a circulation pipe (11) is fixed on the other end of the telescopic rod, a circulation pump (16) is arranged on the circulation pipe (11), and the other end of the circulation pipe (11) is connected to the storage box (6). 3. An abrasive jetting device for inner and outer surfaces of a stainless steel pipe according to claim 1, characterized in that a plurality of arc-shaped plates (23) are evenly distributed on the inner peripheral arm of the cavity (22). 4. An abrasive jetting device for the inner and outer surfaces of a stainless steel pipe according to claim 1, characterized in that the grinding assembly includes a hollow seat (26), the hollow seat (26) is fixedly connected to the first semicircular ring (18) and the second semicircular ring (17) respectively, the interior of the hollow seat (26) is slidably connected with a limit plate (28), a first spring (29) is fixed between the limit plate (28) and the interior of the hollow seat (26), a grinding block (27) is fixed on the limit plate (28), a jet channel (32) is opened in the middle of the grinding block (27), a jet pipe (30) is slidably connected in the jet channel (32), and the jet pipe (30) is fixedly connected to the through hole (24). 5. An abrasive jetting device for the inner and outer surfaces of a stainless steel pipe according to claim 2, characterized in that a first inclined block (33) is fixed to the inner bottom of the first semicircular cover (13), and a second inclined block (34) is fixed to the inner bottom of the second semicircular cover (14), the upper inclined surfaces of the first inclined block (33) and the second inclined block (34) are located in the same plane, and the lower end of the second inclined block (34) is flush with the lower end of the inner circumference of the discharge pipe (35). 6. A stainless steel pipe inner and outer surface abrasive jetting device according to claim 4, characterized in that the jetting assembly comprises a transfer box (36), the transfer box (36) is fixedly connected to the bracket (5), an intermittent feeding assembly is arranged between the transfer box (36) and the storage box (6), the lower end of the transfer box (36) is connected to the feeding seat (19) through a feed pipe (41), a fourth motor (37) is fixed on the left side of the transfer box (36), and the output shaft end of the fourth motor (37) is connected to the feed seat (19) through a feed pipe (41). A hollow shaft (38) is fixed, a plurality of stirring blades (39) are fixed on the hollow shaft (38), an air delivery cavity connected to the hollow shaft (38) is provided inside the stirring blade (39), a plurality of air jet ports (46) are provided on the stirring blade (39), an air guide seat (43) is fixed at the right end of the transfer box (36), the air guide seat (43) is connected to the hollow shaft (38), the air guide seat (43) is connected to a refrigeration box (44) through a pipeline, and an air delivery pump (45) is fixed on the refrigeration box (44). 7. An abrasive jetting device for inner and outer surfaces of a stainless steel pipe according to claim 6, characterized in that a plurality of curved diversion channels (31) are provided on the grinding block (27), one end of the diversion channel (31) is connected to the jetting channel (32), and the other end of the diversion channel (31) is connected to the outside of the grinding block (27). 8. An abrasive jetting device for the inner and outer surfaces of a stainless steel pipe according to claim 6, characterized in that the intermittent feeding assembly includes a feed pipe (40), the lower end of the feed pipe (40) is connected to the transfer box (36), the upper end of the feed pipe (40) is connected to the storage box (6), the interior of the feed pipe (40) is fixed with a sliding sleeve (42) through a support rod, a sliding rod (47) is slidably connected in the slider, the upper end of the sliding rod (47) extends into the storage box (6) and is fixed with a conical seat (48), the lower end of the sliding rod (47) extends into the transfer box (36) and is fixed with an arc plate (49), the arc plate (49) corresponds to the middle stirring rod, and a plurality of leakage holes (50) are opened on the arc plate (49). 9. An abrasive jetting device for the inner and outer surfaces of a stainless steel pipe according to claim 1, characterized in that a plurality of clamping components are arranged inside the clamping seat (4), and the clamping components include a plurality of guide rods (51) and abutment plates (57), the guide rods (51) are fixedly connected to the clamping seat (4), two support plates (52) are slidably connected to the guide rods (51), a clamping plate (53) is fixed to the end of the support plate (52), clamping blocks (54) are fixed to the opposite surfaces of the two clamping plates (53), driving rods (56) are hinged to the opposite surfaces of the two clamping plates (53), the other ends of the two driving rods (56) are hinged to the abutment plates (57), and a second spring (55) is fixed between the abutment plates (57) and the clamping seat (4).