CN114523422A - Novel shot blasting machine and shot blasting process for powder zinc impregnation component - Google Patents
Novel shot blasting machine and shot blasting process for powder zinc impregnation component Download PDFInfo
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- CN114523422A CN114523422A CN202210230416.7A CN202210230416A CN114523422A CN 114523422 A CN114523422 A CN 114523422A CN 202210230416 A CN202210230416 A CN 202210230416A CN 114523422 A CN114523422 A CN 114523422A
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- shot blasting
- shot
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- blasting chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
- B24C9/006—Treatment of used abrasive material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
A novel shot blasting machine and a shot blasting process for a powder zinc impregnation component comprise a conveyor belt, a shot blasting chamber and a water gun chamber, wherein different pills are mixed and loaded into the shot blasting machine and are sprayed on the surface of a steel part at a high speed to remove iron oxide scales; hanging the steel part on a rotatable hanging conveyor belt in a hanging manner, and leading the steel part to enter a shot blasting machine along with the conveyor belt, so that a shot blasting machine in a shot blasting chamber can blast mixed shot on the rotating and flying steel part to achieve omnibearing shot blasting and rust removal; impacting the surface of the steel piece by using a high-pressure water gun to further remove the iron oxide scale of the steel piece; the shot material collecting box and the dust suction box are arranged in the shot blasting chamber, steel shots after shot blasting and residues falling from the metal surface are collected, uncracked steel shots are collected for secondary utilization, and the dust suction box absorbs dust in the bin, which is caused by the fact that the shot shots strike the surface of the steel part, purifies the environment in the bin, can reduce shot blasting cost, and prolongs the service life of the shot blasting machine. The method has the advantages of no dead angle for removing the scale of the metal component, high removal rate, low abrasion degree of the metal component and low cost.
Description
Technical Field
The invention relates to the technical field of metal rust prevention, in particular to a novel shot blasting machine for a powder zinc impregnation component and a shot blasting process.
Background
The shot blasting machine uses an electric machine of a shot blasting machine as power, utilizes the shot blasting machine to throw out continuous high-speed steel shots with different angles to clean an oxide layer on the surface of a metal workpiece and various residues on the surface of the metal, and cleans rust slag remained on the surface of the metal after shot blasting treatment through subsequent sufficient washing, thereby being a pretreatment technology applied to metal surface anticorrosion treatment.
Common shot blasting machines comprise a crawler type shot blasting machine, a hook type shot blasting machine, a through type shot blasting machine, a catenary type shot blasting machine, a drum type shot blasting machine and the like, and the corresponding shot blasting machines can be selected according to the requirements of the industry. In order to obtain a metal surface infiltration layer with high-quality corrosion resistance, a metal workpiece needs to be put into a shot blasting machine for shot blasting and rust removal before being subjected to co-infiltration, so that an oxide layer and residues on the surface of the metal workpiece are cleaned, and the metal surface has certain roughness. The metal surface roughness is the main content of the shot blasting rust removal quality, and the surface roughness refers to the peak-valley distance of the metal surface profile, and is generally taken in micrometers as a unit. Proper roughness is very important for the anticorrosive coating on the metal surface layer, the roughness is too high, all wave crests can be completely covered by more seeping materials, the consumption of the seeping materials is increased, otherwise, the metal surface exposed in the air can be corroded, and the service life of a metal workpiece is shortened. The metal surface roughness is too low, the adhesive force between the coating and the metal surface is reduced, and the coating is easy to fall off. The existing shot blasting machine cannot perform comprehensive shot blasting on metal workpieces all around at one time, and can not collect dropped steel shots well, so that the efficiency is low, the labor cost is high, and dust is not treated, so that the service life of the machine is shortened due to dust accumulation in a shot blasting chamber.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a novel shot blasting machine and a shot blasting process for a powder zinc impregnation component, which are used for overcoming the problems of efficiency and cost in the prior shot blasting technology and are more suitable for industrial production.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel shot blasting machine for a powder zinc impregnation component comprises a conveyor belt, a first shot blasting chamber, a second shot blasting chamber and a water gun chamber; the high-pressure water spray head is arranged in the water gun chamber; the first shot blasting chamber, the second shot blasting chamber and the water gun chamber are sequentially arranged, and the conveyor belt is integrally arranged at the middle upper parts of the first shot blasting chamber, the second shot blasting chamber and the water gun chamber; the conveying belt is provided with a lifting hook and a rotating base, the lifting hook is arranged on the rotating base, and the lifting hook is used for hanging a metal workpiece; the first shot blasting chamber and the second shot blasting chamber are internally provided with a shot collecting box and a plurality of shot blasting devices, mixed shots are filled in a turbine of each shot blasting device, and the shot collecting boxes are arranged at the bottom of the shot blasting chambers; the mixed shot in the first shot blasting chamber has larger grain diameter and is used for roughly polishing the metal workpiece; the mixed shot in the second shot blasting chamber has smaller grain diameter, and is used for finely blasting metal workpieces.
The rotating angle of the rotating base is 360 degrees, and the transmission speed of the conveyor belt is 30-60 cm/min; the time for completing one rotation of the rotary base is the same as the time for transporting the conveyor belt in the first shot blasting chamber, the second shot blasting chamber and the water gun chamber respectively, so that the time from the beginning of the time when any one lifting hook enters the first shot blasting chamber or the second shot blasting chamber to the end of the time when the lifting hook exits the first shot blasting chamber, the second shot blasting chamber and the water gun chamber is counted, and the lifting hook just rotates one circle in the period.
The two ends of the conveying belt are arranged in a high-altitude mode through the two racks, the rotating bases and the lifting hooks are provided with a plurality of parts, and adjacent rotating bases are provided with intervals.
6 impeller heads are arranged in the first impeller blasting chamber and the second impeller blasting chamber respectively; wherein, 3 groups of the inverted regular triangles are distributed at two sides of the conveyor belt, and the two sides are mirror-symmetrical; the two impeller heads above are horizontal to the conveyor belt, and the emission port is inclined downwards by 15 degrees; the impeller head at the bottom is lower than the horizontal position of the conveyor belt, and the emission port is inclined upwards by 30 degrees.
The high pressure water spray head of squirt room is equipped with 6 altogether, and it distributes in squirt indoor wall both sides, and every side is equipped with 3 and is the distribution of falling triangle, and the position of both sides high pressure water spray head is mirror symmetry.
The high-pressure water nozzles at the two bottom corners on the inverted triangle incline downwards by 30 degrees, the high-pressure water nozzles at the lower top corner incline upwards by 30 degrees, a pressurizer is arranged at the water outlet of each high-pressure water nozzle, and each high-pressure water nozzle is provided with 6 nozzles; the spraying amount of each high-pressure water spray head is 8-10 Kg/min.
The mixed shot materials in the first shot blasting chamber adopt high-carbon steel cast steel shots and old steel grit; the diameter of the cast steel shot is 1-3 mm; the mixed shot material in the second shot blasting chamber adopts high-carbon steel grit, the steel grit is new and old mixed diamond-shaped steel grit, and the diagonal length of the diamond-shaped steel grit is 0.3-0.425 mm.
The mixing ratio of cast steel shots and old steel grits of the mixed shot materials in the first shot blasting chamber is 9: 1-10: 1, and the Rockwell hardness of the cast steel shots is 50-60 HRC; the mixing ratio of the new mixed diamond steel grit to the old mixed diamond steel grit in the second shot blasting chamber is 3: 2-1: 1, and the Rockwell hardness of the new steel grit is 32-40 HRC.
And the first shot blasting chamber and the second shot blasting chamber are internally provided with dust suction boxes, and the dust suction boxes are arranged on the upper parts of the first shot blasting chamber and the second shot blasting chamber and are used for absorbing dust in the shot blasting chambers.
The bottom of the pill collecting box is inclined, the inclined bottom end is connected with the filter screen, and a groove baffle is arranged at the downstream of the filter screen so as to separate pills from waste rust slag and collect usable pills.
The diameter of a gap of a filter screen of the shot collecting box in the first shot blasting chamber is slightly smaller than 1 mm; and the diameter of a gap of a filter screen of the shot collecting box in the second shot blasting chamber is slightly smaller than 0.3 mm.
The water gun chamber, the second shot blasting chamber and the first shot blasting chamber are separated by leather curtains, so that dust in the shot blasting chamber is prevented from polluting the water gun chamber, and water in the water gun chamber is prevented from splashing into the shot blasting chamber to influence shot blasting quality.
A novel shot blasting process of a shot blasting machine for a powder zinc impregnation component comprises the following steps:
1) fixing a metal workpiece to be shot-blasted on a lifting hook of a conveyor belt;
2) the metal workpiece moves forwards on the conveyor belt at a constant speed and passes through the first shot blasting chamber, and the shot blasting machine sprays thick mixed shot to strike the surface of the metal workpiece so as to roughly remove the iron oxide scale on the surface of the metal workpiece; then the metal workpiece enters a second shot blasting chamber to carry out fine blasting on the metal workpiece;
3) the mixed shot materials which are hit on the surface of the metal workpiece fall into a shot material collecting box at the bottom end in the shot blasting chamber; the shot material collecting box collects reusable steel shots for secondary utilization, so that shot blasting cost is reduced;
4) the high-pressure water spray head of the water gun chamber sprays high-pressure water to impact the surface of the metal workpiece, so that iron scales at the dead corner of the metal workpiece are further removed, and the surface quality of the workpiece is improved.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the invention improves the shot blasting and rust removing efficiency of the co-infiltration of the metal workpiece through the shot collecting box, the suspension type conveyor belt with the rotatable hook base and the dust suction box. Wherein, the shot collecting box can save the time for collecting reusable steel shots; the rotatable lifting hook can lead the steel piece to be subjected to all-around rust removal in the shot blasting chamber; the dust collection box arranged in the shot blasting chamber can purify the environment in the shot blasting chamber when the shot blasting chamber works, prevent the dust which is knocked down from being adsorbed on the inner wall of the shot blasting chamber to cause the service life of the shot blasting chamber to be reduced, and simultaneously prevent the dust in the air from being adhered to the surface of a steel piece which is just shot blasted, and the service life of the shot blasting machine can be prolonged due to the existence of the dust collection box.
2. In order to effectively remove rust on the surface of the steel piece, the invention utilizes the suspended conveyor belt and the rotatable hook base, so that the steel piece can rotate 360 degrees at one time in the first shot blasting chamber, the second shot blasting chamber and the water gun chamber, and the efficiency and the quality of shot blasting rust removal are improved.
3. The invention effectively separates the residue from the broken steel shots and the steel shots which can be recycled, and a driver is arranged around the filter screen, so that the filter screen vibrates, and the residue of the shot box can be effectively separated. The baffle is arranged below the filter screen, steel shots which fall from the filter screen are collected, the quality of collecting secondary shots by the collecting box is improved, the cost of shot blasting and rust removal is reduced, and the working efficiency of the shot blasting machine is improved.
4. The diameter of the pore of the filter screen of the shot collecting box is slightly smaller than the diameter of the minimum steel shot emitted in the shot blasting chamber, so that shot residues and crushed steel shots can be screened off, complete steel shots are collected for secondary utilization, and the cost of shot blasting can be effectively reduced.
5. Aiming at the requirements of the surface of a metal workpiece after shot blasting, the invention improves the hardness, granularity, injection distance, angle and the like of a steel shot according to the size of the shot-blasted workpiece, improves the shot blasting efficiency, saves energy consumption, ensures that the surface roughness of the obtained product meets the subsequent zinc impregnation standard, and can improve the absorptivity of a penetrating agent.
6. The conveying device is compact in structure, strong in universality and high in automation degree, facilitates workers to replace workpieces, and improves production efficiency.
Drawings
FIG. 1 is a schematic structural view of a shot blasting machine according to the present invention;
FIG. 2 is a schematic view of the structure of the conveyor belt;
FIG. 3 is a schematic structural view of a pellet collecting box;
FIG. 4 is a schematic view of the structure of the high pressure water jet head.
Reference numerals: the shot blasting machine comprises a first shot blasting chamber 1, a second shot blasting chamber 2, a water gun chamber 3, shot collecting boxes 4 and 5, a conveyor belt 6, shot blasting devices 7 and 9, a high-pressure water nozzle 8, a dust suction box 10 and a lifting hook 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As shown in fig. 1, the shot blasting machine for powder zincizing members of the present embodiment includes a conveyor belt 6, a first shot blasting chamber 1, a second shot blasting chamber 2, and a water gun chamber 3; the first shot blasting chamber 1, the second shot blasting chamber 2 and the water gun chamber 3 are sequentially arranged, and the conveyor belt 6 is integrally arranged at the middle upper parts of the first shot blasting chamber, the second shot blasting chamber and the water gun chamber; the two ends of the conveyor belt 6 are arranged in a high-altitude mode through two racks; and the water gun chamber 3, the second shot blasting chamber 2 and the first shot blasting chamber 1 are separated by leather curtains, so that dust in the shot blasting chambers is prevented from polluting the water gun chamber, and water in the water gun chamber is prevented from splashing into the shot blasting chambers to influence the shot blasting quality.
As shown in fig. 1-2, a rotating base is arranged on the conveyor belt 6 at intervals of 50cm, and a lifting hook 11 is arranged on the rotating base and used for hanging a metal workpiece; the rotating angle of the rotating base is 360 degrees, and the transmission speed of the conveyor belt is 30-60 cm/min; the time for completing one rotation of the rotary base is the same as the time for respectively transporting the conveyor belt in the first shot blasting chamber and the second shot blasting chamber, so that the time from the beginning of the time when any one hook enters the first shot blasting chamber or the second shot blasting chamber to the end of the time when the hook exits the first shot blasting chamber or the second shot blasting chamber is counted, and the hook just rotates for one rotation in the period, so that the mixed shot and the high-pressure water sprayer can strike the surface of the metal workpiece in an all-around manner, and shot blasting and rust removal can be efficiently carried out.
As shown in fig. 1, the first shot blasting chamber and the second shot blasting chamber are respectively provided with a shot collecting box and a plurality of shot blasting devices, and mixed shots are filled in turbines of the shot blasting devices;
the shot collecting box 4 and the shot blasting device 7 are arranged at the bottom of the first shot blasting chamber 1, and the shot collecting box 5 and the shot blasting device 9 are arranged at the bottom of the second shot blasting chamber 2; the mixed shot material in the first shot blasting chamber 1 has larger grain size and is used for roughly polishing a metal workpiece; the mixed shot material in the second shot blasting chamber 2 has smaller grain diameter, and is used for finely blasting metal workpieces.
6 impeller heads are arranged in the first impeller blasting chamber and the second impeller blasting chamber respectively; wherein, 3 groups of the inverted regular triangles are distributed at two sides of the conveyor belt, and the two sides are mirror-symmetrical; the two impeller heads above are horizontal to the conveyor belt, and the emission port is inclined downwards by 15 degrees; the impeller head at the bottom is lower than the horizontal position of the conveyor belt, and the emission port is inclined upwards by 30 degrees.
The mixed shot materials in the first shot blasting chamber adopt high-carbon steel cast steel shots and old steel grit; the diameter of the cast steel shot is 1-3 mm; the mixed shot material in the second shot blasting chamber adopts high-carbon steel grit, the steel grit is new and old mixed diamond-shaped steel grit, and the diagonal length of the diamond-shaped steel grit is 0.3-0.425 mm.
The mixing ratio of cast steel shots and old steel grits of the mixed shot materials in the first shot blasting chamber is 9: 1-10: 1, and the Rockwell hardness of the cast steel shots is 50-60 HRC; the mixing ratio of the new mixed diamond steel grit to the old mixed diamond steel grit in the second shot blasting chamber is 3: 2-1: 1, and the Rockwell hardness of the new steel grit is 32-40 HRC.
As shown in fig. 1 and 3, the bottom of the pill collecting box is inclined, the inclined bottom end is connected with a filter screen, and a groove baffle plate is arranged at the downstream of the filter screen so as to separate pills from waste rust slag and collect available pills. Specifically, the diameter of a gap of a filter screen of the shot collecting box in the first shot blasting chamber is slightly smaller than 1 mm; and the diameter of a gap of a filter screen of the shot collecting box in the second shot blasting chamber is slightly smaller than 0.3 mm.
And the first shot blasting chamber and the second shot blasting chamber are internally provided with dust suction boxes 10, and the dust suction boxes 10 are arranged on the upper parts of the first shot blasting chamber and the second shot blasting chamber. In this embodiment, the suction box is equipped with the mouth of pipe, and mouth of pipe department has 6 blades, and the driver is connected to the blade, and the during operation driver makes the blade incite fast, thereby the inside and outside air current of shot blasting room is different to reach the dust in the absorption shot blasting room, so, reaches the purification shot blasting room, prolongs the life-span of shot-blasting machine, promotes the effect of throwing ball efficiency.
As shown in fig. 1 and 4, the inside of squirt gun chamber is equipped with 6 high pressure water sprays 8, and it distributes in squirt gun chamber inner wall both sides, and every side is equipped with 3 and is the distribution of falling triangle, and the position of both sides high pressure water spray is mirror symmetry. Specifically, the high-pressure water spray nozzles at two bottom corners on the inverted triangle are inclined downwards by 30 degrees, the high-pressure water spray nozzles at the lower top corner are inclined upwards by 30 degrees, a pressurizer is arranged at a water outlet of each high-pressure water spray nozzle, and each high-pressure water spray nozzle is provided with 6 spray nozzles; the spraying amount of each high-pressure water nozzle is 8-10 Kg/min, so that the sprayed water is large in flow speed and wide in coverage area, and the residues at the sunken parts of the metal surface can be washed clean in an all-around and effective manner under the action of the conveyor belt at the included angle between the water flow direction and the metal surface.
The invention sends steel into the shot blasting machine in a vertical shape at a fixed speed, and adopts a catenary hanger type track for shot blasting treatment of large-tonnage and large-volume workpieces. The lifting hook system adopts a traveling structure, a single lifting hook is taken as a carrying tool of a workpiece, the workpiece to be shot-blasted is hung on a special lifting hook of a shot-blasting catenary conveying line, and the workpiece enters a shot-blasting machine for shot-blasting treatment. The problems of scratch and low subsequent cleaning efficiency caused by the turnover of large-size workpieces in the shot blasting chamber are solved, and the working quality and the working efficiency are improved.
The working principle and the steps of the invention are as follows:
the first step is as follows: during being vertical and sending into shot-blasting machine with fixed speed with steel, rotatable suspension type conveyer belt makes the steel sheet can be in the sky in the shot-blasting room, and rotatable lifting hook can make the steel part 360 clockwise rotations a week in the shot-blasting room. The suspended design can ensure that the plate can rotate in a three-dimensional manner, cannot block shot materials from shooting the steel plate, is favorable for fully performing shot blasting and rust removal, and cannot obstruct the collection of shot-blasted steel shots.
The second step is that: and the steel to be thrown enters the frame of the shot blasting machine along with the conveyor belt. Along with the action of the conveyor belt, the metal workpieces sequentially enter a first shot blasting chamber and a second shot blasting chamber, wherein each shot blasting chamber is provided with 6 steel shot emitters, 1 dust suction box and 1 shot collecting box; the steel shot emitter in the first shot blasting chamber mainly emits cast steel shots with the thickness of 1-3 mm, and the rough blasting effect is achieved; the emitter prepared in the second shot blasting chamber mainly emits cast steel shots with the thickness of 0.3mm to 0.425mm, and the fine blasting effect is achieved
The third step: the dust suction box positioned above the shot blasting chamber can effectively absorb dust in the bin, so that the effects of purifying the shot blasting chamber, prolonging the service life of the shot blasting machine and improving the shot blasting efficiency are achieved. The driver is installed around the filter screen of the pill collecting box, so that the filter screen vibrates, the residues of the pill collecting box can be effectively separated, the fallen residues fall from the pores of the filter screen, and the quality of collecting secondary pills by the collecting box is improved.
The fourth step: and cleaning residues on the metal surface in a water gun chamber. And the second shot blasting chamber is separated from the water gun chamber by a leather curtain, so that dust in the shot blasting chamber is prevented from polluting the water gun chamber, and water in the water gun chamber is prevented from splashing into the shot blasting chamber to influence shot blasting quality. The indoor 6 high-pressure spray guns that contain of squirt, the spray gun downward sloping of two base angle departments of the triangle of falling 30, the spray gun tilt up 30 of lower apex angle, the delivery port department of every nozzle has a presser, and every high-pressure spray gun mouth has 6 nozzles, and its interval is minimum for spun water velocity is big, the covering surface is wide, and rivers direction and metal surface contained angle are under the effect of conveyer belt, from can all-round effectively with the metal surface residue of depressed place clean.
The rotary suspension type conveyor belt is adopted, so that the steel plate of the metal workpiece can rotate in the shot blasting chambers, the steel plate just goes out of the first shot blasting chamber after the homeotropic needle rotates for a circle, and the steel plate rotates for a circle in the second shot blasting chamber. The rotatable suspension type can enable the plate to vertically enter the shot blasting chambers and receive shot blasting rust removal at different angles in all directions in the first shot blasting chamber and the second shot blasting chamber respectively.
According to the invention, the shot blasting rust removal can be carried out on the steel plate in all directions by setting the number, the position and the inclination angle of the shot blasting devices, so that the shot blasting rust removal effect is improved. Shot materials moving at a high speed are shot to the surface of metal from a steel shot emitter, iron rust and residues on the surface of the metal are knocked down by collision, the knocked-down residues and the steel shots fall into a shot material collecting box with the bottom inclined, and slide down on a filter screen at the bottommost part of the shot material collecting box along with the smooth bottom, the diameter of a pore of the filter screen is slightly smaller than the diameter of the minimum steel shot emitted in the shot blasting chamber, so that the knocked-down residues and the knocked-down steel shots can be sieved, the complete steel shots are collected for secondary utilization, and the cost of shot blasting shots can be effectively reduced.
The invention can effectively separate the residue from the broken steel shots and the steel shots which can be recycled, and the driver can be arranged around the filter screen, so that the filter screen vibrates to effectively separate the residue of the shot box. The baffle is arranged below the filter screen, steel shots which fall from the filter screen are collected, the quality of collecting secondary shots by the collecting box is improved, the cost of shot blasting and rust removal is reduced, and the working efficiency of the shot blasting machine is improved.
According to the shot material collecting box, a large amount of dust is raised when the filter screen of the shot material collecting box vibrates and steel shots collide with residues and iron rust on the surface of metal, the dust can fill the shot blasting chamber, and a layer of residue is deposited on the inner wall of the shot blasting chamber. To above problem, the dust collection box that is located shot-blasting room top can effectually absorb the dust in the storehouse, reaches the shot-blasting room of purification, prolongs the life-span of shot-blasting machine, promotes the effect of throwing ball efficiency.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (13)
1. The utility model provides a novel a shot-blasting machine that is used for powder to ooze zinc component which characterized in that: the shot blasting machine comprises a conveyor belt, a first shot blasting chamber, a second shot blasting chamber and a water gun chamber; the high-pressure water spray head is arranged in the water gun chamber; the first shot blasting chamber, the second shot blasting chamber and the water gun chamber are sequentially arranged, and the conveyor belt is integrally arranged at the middle upper parts of the first shot blasting chamber, the second shot blasting chamber and the water gun chamber; the conveying belt is provided with a lifting hook and a rotating base, the lifting hook is arranged on the rotating base, and the lifting hook is used for hanging a metal workpiece; the first shot blasting chamber and the second shot blasting chamber are internally provided with a shot collecting box and a plurality of shot blasting devices, mixed shots are filled in a turbine of each shot blasting device, and the shot collecting boxes are arranged at the bottom of the shot blasting chambers; the mixed shot in the first shot blasting chamber has larger grain size and is used for roughly polishing a metal workpiece; the mixed shot in the second shot blasting chamber has smaller grain diameter, and is used for finely blasting metal workpieces.
2. The novel shot blasting machine for powder zincizing members as recited in claim 1, wherein: the rotating angle of the rotating base is 360 degrees, and the transmission speed of the conveyor belt is 30-60 cm/min; the time for completing one rotation of the rotary base is the same as the time for transporting the conveyor belt in the first shot blasting chamber, the second shot blasting chamber and the water gun chamber respectively, so that the time from the beginning of the time when any one lifting hook enters the first shot blasting chamber or the second shot blasting chamber to the end of the time when the lifting hook exits the first shot blasting chamber, the second shot blasting chamber and the water gun chamber is counted, and the lifting hook just rotates one circle in the period.
3. The novel shot blasting machine for powder zincizing members as recited in claim 1, wherein: the two ends of the conveying belt are arranged in a high-altitude mode through the two racks, the rotating bases and the lifting hooks are provided with a plurality of parts, and adjacent rotating bases are provided with intervals.
4. The novel shot blasting machine for powder zincizing members as recited in claim 1, wherein: 6 impeller heads are arranged in the first impeller blasting chamber and the second impeller blasting chamber respectively; wherein, 3 groups of the inverted regular triangles are distributed at two sides of the conveyor belt, and the two sides are mirror-symmetrical; the two impeller heads above are horizontal to the conveyor belt, and the emission port is inclined downwards by 15 degrees; the impeller head at the bottom is lower than the horizontal position of the conveyor belt, and the emission port is inclined upwards by 30 degrees.
5. The novel shot blasting machine for powder zincizing members as recited in claim 1, wherein: the high pressure water spray head of squirt room is equipped with 6 altogether, and it distributes in squirt indoor wall both sides, and every side is equipped with 3 and is the distribution of falling triangle, and the position of both sides high pressure water spray head is mirror symmetry.
6. The novel shot blasting machine for powder zincizing members as recited in claim 5, wherein: the high-pressure water nozzles at the two bottom corners on the inverted triangle incline downwards by 30 degrees, the high-pressure water nozzles at the lower top corner incline upwards by 30 degrees, a pressurizer is arranged at the water outlet of each high-pressure water nozzle, and each high-pressure water nozzle is provided with 6 nozzles; the spraying amount of each high-pressure water spray head is 8-10 Kg/min.
7. The novel shot blasting machine for powder zincizing members as recited in claim 1, wherein: the mixed shot materials in the first shot blasting chamber adopt high-carbon steel cast steel shots and old steel grit; the diameter of the cast steel shot is 1-3 mm; the mixed shot material in the second shot blasting chamber adopts high-carbon steel grit, the steel grit is new and old mixed diamond-shaped steel grit, and the diagonal length of the diamond-shaped steel grit is 0.3-0.425 mm.
8. The novel shot blasting machine for powder zincizing members as recited in claim 7, wherein: the mixing ratio of cast steel shots and old steel grits of the mixed shot materials in the first shot blasting chamber is 9: 1-10: 1, and the Rockwell hardness of the cast steel shots is 50-60 HRC; the mixing ratio of the new mixed diamond steel grit to the old mixed diamond steel grit in the second shot blasting chamber is 3: 2-1: 1, and the Rockwell hardness of the new steel grit is 32-40 HRC.
9. The novel shot blasting machine for powder zinciferous members of claim 1, wherein: and the first shot blasting chamber and the second shot blasting chamber are internally provided with dust suction boxes, and the dust suction boxes are arranged on the upper parts of the first shot blasting chamber and the second shot blasting chamber and are used for absorbing dust in the shot blasting chambers.
10. The novel shot blasting machine for powder zincizing members as recited in claim 1, wherein: the bottom of the pill collecting box is inclined, the inclined bottom end is connected with the filter screen, and a groove baffle is arranged at the downstream of the filter screen so as to separate pills from waste rust slag and collect usable pills.
11. A novel shot-blasting machine for powder-zincized components according to claim 10, characterized in that: the diameter of a gap of a filter screen of the shot collecting box in the first shot blasting chamber is slightly smaller than 1 mm; and the diameter of a gap of a filter screen of the shot collecting box in the second shot blasting chamber is slightly smaller than 0.3 mm.
12. The novel shot blasting machine for powder zincizing members as recited in claim 1, wherein: the water gun chamber, the second shot blasting chamber and the first shot blasting chamber are separated by leather curtains, so that dust in the shot blasting chamber is prevented from polluting the water gun chamber, and water in the water gun chamber is prevented from splashing into the shot blasting chamber to influence shot blasting quality.
13. The shot blasting process of the novel shot blasting machine for the powder zincizing component, which is disclosed by any one of claims 1 to 12, is characterized by comprising the following steps of:
1) fixing a metal workpiece to be shot-blasted on a lifting hook of a conveyor belt;
2) the metal workpiece moves forwards on the conveyor belt at a constant speed and passes through the first shot blasting chamber, and the shot blasting machine sprays thick mixed shot to strike the surface of the metal workpiece so as to roughly remove the iron oxide scale on the surface of the metal workpiece; then the metal workpiece enters a second shot blasting chamber to carry out fine blasting on the metal workpiece;
3) the mixed shot materials which are hit on the surface of the metal workpiece fall into a shot material collecting box at the bottom end in the shot blasting chamber; the shot material collecting box collects reusable steel shots for secondary utilization, so that shot blasting cost is reduced;
4) the high-pressure water spray head of the water gun chamber sprays high-pressure water to impact the surface of the metal workpiece, so that iron scales at the dead corner of the metal workpiece are further removed, and the surface quality of the workpiece is improved.
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| CN202210230416.7A CN114523422A (en) | 2022-03-10 | 2022-03-10 | Novel shot blasting machine and shot blasting process for powder zinc impregnation component |
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| CN202210230416.7A CN114523422A (en) | 2022-03-10 | 2022-03-10 | Novel shot blasting machine and shot blasting process for powder zinc impregnation component |
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