CN110804718B

CN110804718B - Hot galvanizing production process

Info

Publication number: CN110804718B
Application number: CN201911080775.3A
Authority: CN
Inventors: 陆军明; 陆振飞; 盛凯伟
Original assignee: Jiaxing Baoli Machinery Co ltd
Current assignee: Jiaxing Baoli Machinery Co ltd
Priority date: 2018-11-11
Filing date: 2019-11-07
Publication date: 2023-01-10
Anticipated expiration: 2039-11-07
Also published as: CN110804718A

Abstract

The invention discloses a hot galvanizing production process, which comprises the following steps: 1) Preheating an empty basket; 2) Centrifuging the first empty basket; 3) Feeding the first galvanizing basket; 4) Galvanizing; 5) Centrifuging the second empty basket; 6) Repeatedly moving until each bracket body is provided with a galvanized basket; 7) After the first galvanizing basket finishes galvanizing, the first main shaft rotates circumferentially, the centrifugal clamping mechanism descends to grab the first galvanizing basket, and the second main shaft drives the centrifugal clamping mechanism to ascend and rotates and centrifugalizes the first galvanizing basket; 8) After centrifugation is finished, the transfer device rotates to a centrifugation position, the first galvanizing basket is grabbed to rotate to a blanking position, the first galvanizing basket is rotated to an upper material position after overturning and dumping, and the material to be processed is placed in again; 9) The above actions, or the above cycle, are repeated. According to the invention, the transfer device rotates circumferentially by taking the third main shaft as a center, and the galvanizing, centrifuging, blanking and feeding are arranged on the same circumference, so that the volume is reduced, the occupied area is reduced, the discharging speed is high, the galvanizing period is shortened, and the production efficiency is high.

Description

Hot galvanizing production process

Technical Field

The invention belongs to the field of hot galvanizing, and particularly relates to a hot galvanizing production process.

Background

In order to ensure the aesthetic appearance and rust prevention performance of materials such as metals and alloys, hot dip galvanizing is generally performed on the surface of the materials. The hot galvanizing, also called hot dip galvanizing and hot dip galvanizing, is an effective metal anticorrosion mode, and the material after the pretreatment is put into a molten zinc liquid at about 530 ℃, and a zinc layer is attached to the surface of the material after complex physical and chemical actions are carried out under the condition that the zinc is in a liquid state, so that the purpose of anticorrosion is achieved.

At present, the domestic hot galvanizing production technology is still in a relatively laggard development stage, and a plurality of enterprises lack advanced technology and old equipment, so that the hot galvanizing is regarded as an industry with large raw material and energy consumption and serious environmental pollution in China. A large number of medium-small scale hot galvanizing enterprises still use coal, and the temperature of an external heating furnace exceeds 900 ℃ to directly bake a zinc pot, so that pressure is applied to surrounding refractory materials, the heat transfer effect is poor, and bad heat reaction occurs; meanwhile, the production problems of low processing efficiency, inaccurate temperature control, high fuel consumption, high waste gas temperature and the like are caused.

In order to solve the above problems, chinese patent CN 106244962 discloses an automatic generation system for small part hot galvanizing, which is provided with a closed track mechanism, wherein a feeding zone, a galvanizing zone, a centrifugal zone and a discharging zone are arranged along the track mechanism, the feeding mechanism on the track mechanism can be independently controlled, and the running speed is adjustable. But the length of the track mechanism is still relatively longer, the occupied space is larger, the time consumption of discharging and pouring can be shortened, and the whole production line system has improved space.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the hot galvanizing production process which is energy-saving and environment-friendly, occupies a small area, has high galvanizing efficiency and has good galvanizing quality.

The technical scheme adopted by the invention for solving the technical problems is as follows: a hot galvanizing production process comprises the following steps:

1) Preheating an empty basket: the first main shaft drives a bracket comprising a plurality of bracket bodies to descend to a galvanizing position, and an empty galvanizing basket on the bracket bodies is soaked in a galvanizing pool;

2) Centrifuging a first empty basket: the centrifugal clamping mechanism descends along with the second main shaft, a first galvanizing basket on a first bracket body located right below the centrifugal clamping mechanism is grabbed, and after the first galvanizing basket is completely separated from the liquid level of the zinc liquid pool, the second main shaft rotates at a high speed for centrifugation;

3) Feeding a first galvanized basket: the transfer device grabs the centrifuged first galvanized basket from the centrifugal clamping mechanism, rotates to the upper material level around the circumferential direction of the third main shaft, and places the material to be processed into the first galvanized basket;

4) And (3) galvanizing: the first main shaft rotates circumferentially until the second bracket body is positioned right below the second main shaft, the second bracket body is adjacent to the first bracket body, the transfer device rotates circumferentially around the third main shaft, and after the first galvanized basket which finishes feeding is placed on the first bracket body, the transfer device continues to rotate circumferentially around the third main shaft until the first galvanized basket is in a waiting position;

5) Centrifuging a second empty basket: the centrifugal clamping mechanism descends along with the second main shaft, a second galvanized basket on a second bracket body right below the centrifugal clamping mechanism is grabbed, and after the second galvanized basket is completely separated from the zinc liquid pool, the second main shaft rotates at a high speed for centrifugation;

6) Repeating the actions until each bracket body is provided with a galvanizing basket for the materials to be processed, and the galvanizing baskets are positioned at the galvanizing positions;

7) After materials in the first galvanizing basket are galvanized, the first main shaft rotates in the circumferential direction until the first bracket body is positioned under the second main shaft, the centrifugal clamping mechanism descends along with the second main shaft, the second main shaft drives the centrifugal clamping mechanism to ascend and simultaneously rotates and centrifuges the first galvanizing basket, and when the first galvanizing basket is completely separated from the galvanizing liquid pool, the second main shaft rotates and centrifuges at a high speed;

8) After the centrifugation is finished, the transfer device circumferentially rotates around the third main shaft to a centrifugation position, the centrifuged first galvanized basket is grabbed from the centrifugal clamping mechanism and circumferentially rotates around the third main shaft to a blanking position, after the first galvanized basket is overturned and poured, the transfer device continuously circumferentially rotates around the third main shaft to the blanking position, and the material to be processed is placed into the first galvanized basket again;

9) Repeating the above actions until the materials in each galvanizing basket finish galvanizing, or repeating the above cycle until all the materials finish galvanizing.

Further, before the step 2), the first main shaft drives the bracket to ascend until the clamping part of the galvanizing basket is exposed out of the upper surface of the galvanizing bath; after the step 6), when the second galvanizing basket is separated from the second bracket body, the bracket descends to the galvanizing position along with the first main shaft.

Further, in the step 7), the first main shaft drives the bracket to rise to the clamping part of the galvanizing basket to expose out of the upper surface of the galvanizing bath, and the centrifugal clamping mechanism descends along with the second main shaft to grab the first galvanizing basket.

Further, in the step 2), the first galvanizing basket is rotated and centrifuged while the second spindle drives the centrifugal clamping mechanism to ascend.

Further, in the step 5), the second galvanized basket is rotated and centrifuged while the second spindle drives the centrifugal clamping mechanism to ascend.

Further, before the step 2), the surface of the molten zinc above the first bracket body is subjected to ash scraping treatment.

Further, in the step 4), before the first galvanizing basket is placed on the first bracket body, the surface of the molten zinc above the first bracket body is subjected to ash scraping treatment.

Furthermore, the bracket body comprises a first bracket body, a second bracket body and a third bracket body which are adjacent in sequence, and after the third bracket body finishes adding the material to be processed, the material in the first galvanizing basket on the first bracket body just finishes the galvanizing process.

Further, in the step 3), the transfer device firstly rotates to the blanking position around the third main shaft in the circumferential direction, and rotates to the blanking position after the first galvanizing basket is turned over and subjected to the material pouring action.

Further, in the step 3), after the transfer device grabs the first galvanizing basket, the centrifugal clamping mechanism ascends along with the second main shaft to avoid a space for the transfer device to rotate; or when the transfer device grabs the first galvanizing basket, the transfer device descends firstly to avoid the centrifugal clamping mechanism.

The invention has the beneficial effects that: 1) The whole galvanizing process is completed by the up-and-down lifting and circumferential rotation of the galvanizing device, the centrifugal device and the transfer device and the turnover dumping of the turnover mechanism, and the design concept is ingenious; 2) The thinking that galvanization, centrifugation and dumping are arranged in different areas in the traditional process is broken through, the transfer device rotates in the circumferential direction by taking the third main shaft as a center, and the galvanization, the centrifugation, the blanking and the feeding are arranged on the same circumference, so that the volume is greatly reduced, the occupied area is reduced, the discharging speed is high, and the galvanization period is shortened; 3) The traditional thinking is broken through, the galvanizing device is designed to rotate in the circumferential direction, so that a plurality of bracket bodies arranged on the circumference of the first main shaft can be galvanized at the same time, a plurality of galvanizing baskets are not independently moved in the galvanizing bath for galvanizing, the galvanizing time is controlled for adjustment, but not the moving distance of the galvanizing baskets is controlled for adjustment, and the transverse length of the galvanizing bath is at least reduced; 4) The multi-stage automatic zinc plating device is characterized in that a plurality of circumferentially arranged bracket bodies are arranged, each bracket body is provided with a zinc plating basket, time lines of zinc plating, centrifugation, blanking and feeding are overlapped, centrifugation and zinc plating can be simultaneously carried out while blanking is carried out, time consumed for completing one zinc plating process cycle is short, and production efficiency is high; 5) The bracket is always soaked in the zinc liquid for preheating, other special heating procedures are not needed, and the energy is saved and the environment is protected; 6) The centrifugal device moves downwards to grab the galvanized basket instead of lifting the galvanized basket upwards and sending the galvanized basket to the centrifugal device, so that the consumed power is low; 7) The method has the advantages that the method starts to rotate and centrifuge when the galvanizing basket is not completely separated from the galvanizing bath, and does not rotate and centrifuge again after the materials in the galvanizing basket contact air, so that the defect that the galvanizing layer on the materials is not compact enough due to the fact that the materials are centrifuged again after being solidified is completely avoided, the galvanizing layer is uniform, and the product quality is good; 8) The turnover mechanism for dumping materials is arranged at the end part of the moving device, so that the dumping speed is high;

9) The centrifugal device is positioned above the galvanizing device, and the zinc liquid thrown out by centrifugation can directly enter the galvanizing pool for recycling; 10 The centrifugal device is positioned right above one of the bracket bodies, and can directly move down to grab the galvanized basket on the bracket body, so that the structural design is ingenious, and the production time is saved.

Drawings

Fig. 1 is a schematic perspective view of a hot dip galvanizing system according to the first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a hot dip galvanizing system according to a second embodiment of the present invention.

FIG. 3 is a schematic front view of a hot dip galvanizing system according to the present invention.

FIG. 4 is a schematic bottom view of the hot dip galvanizing system of the present invention.

Fig. 5 is a schematic perspective view of a galvanizing apparatus according to the first embodiment of the present invention.

FIG. 6 is a schematic perspective view of a galvanizing apparatus according to the second embodiment of the present invention.

FIG. 7 is a schematic front view of the galvanizing apparatus according to the present invention.

FIG. 8 is a schematic sectional view showing the galvanizing apparatus according to the present invention.

Fig. 9 is a schematic perspective view of the bracket of the present invention.

Fig. 10 is a perspective view of the bracket body.

Fig. 11 is a schematic top view of the bracket body.

Fig. 12 is a schematic perspective view of a centrifugal apparatus according to the present invention.

Fig. 13 is a schematic perspective view of a centrifugal apparatus according to the present invention.

FIG. 14 is a schematic front view of the centrifugal apparatus of the present invention.

FIG. 15 is a schematic view of the cross-sectional structure of the centrifuge of the present invention.

Fig. 16 is a schematic perspective view of the first transfer device according to the present invention.

Fig. 17 is a schematic perspective view of a second transfer device according to the present invention.

Fig. 18 is a simplified view of the first embodiment of the housing of the present invention.

Fig. 19 is a simplified diagram of the structure of the housing of the present invention.

FIG. 20 is a schematic top view of the transfer device of the present invention at the lower zinc level.

FIG. 21 is a schematic top view of the transfer device of the present invention at a loading position.

FIG. 22 is a schematic top view of a transfer device of the present invention at a first, lowered position.

FIG. 23 is a schematic top view of the transfer device of the present invention at a second loading position.

FIG. 24 is a schematic top view of the transfer device in the waiting position according to the present invention.

FIG. 25 is a schematic top view of the transfer device in an eccentric position according to the present invention.

FIG. 26 is a schematic view showing the structure of the first zinc plating basket of the present invention at the position "a".

FIG. 27 is a schematic view showing the structure of the second zinc coating basket of the present invention at position a.

FIG. 28 is a schematic view showing the structure of a third zinc coating basket of the present invention at position a.

FIG. 29 is a schematic view showing the structure of a fourth zinc plating basket of the present invention at position a.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

As shown in fig. 1 and 2, a hot galvanizing production system comprises a casing 1, which is covered above a galvanizing bath 2 to form a relatively closed space, a galvanizing device, a centrifugal device and a transfer device are arranged in the casing 1, specifically, the devices are arranged in the space formed by the galvanizing bath 2 and the casing 1, and a partition plate 10 parallel to the upper surface of a zinc liquid in the galvanizing bath 2 is arranged in the casing 1.

As shown in fig. 5 to 11, the galvanizing apparatus includes a first main shaft 32 which is driven by a rotary servo motor 321 to rotate in a circumferential direction, a carriage 31 which is connected to a bottom end of the first main shaft 32 and is rotatable in synchronization with the first main shaft 32, and a first elevating mechanism 33 for driving the first main shaft 32 and the carriage 31 to move up and down in synchronization. The bracket 31 includes a plurality of bracket bodies 311 disposed along a circumference of the first spindle 32, in this embodiment, the number of the bracket bodies 311 is three, or may be four, and the bracket bodies include a first bracket body, a second bracket body 312, a third bracket body 313 and a fourth bracket body 314 disposed adjacently in sequence, the four bracket bodies are connected to a bottom end of the first spindle 32 through a tray 317, specifically, the bracket body 311 includes an "L" -shaped connecting arm 315, a circular ring body 318 and a "V" -shaped reinforcing rib 316, the two "L" -shaped connecting arms 315 are connected to each other through a transverse plate 310, the transverse plate 310 is fixedly connected to the tray 317, the circular ring body 318 is integrally connected between the two "L" -shaped connecting arms 315, in order to improve strength of the bracket body 311, the "V" -shaped reinforcing rib 316 is fixedly connected between the two "L" -shaped connecting arms 315 and the circular ring body 318, and two open ends of the "V" -shaped reinforcing rib 316 are respectively connected to the two "L" -shaped connecting arms 315, which are connected to the circular ring body 318, so as to form a stable supporting function; for the convenience of processing and for ensuring the stable erection of the galvanized basket 4 on the bracket body 311, a plurality of "7" shaped contact convex parts 319 are uniformly distributed along the circumferential direction at the upper opening of the circular ring body 318, and comprise outer side surfaces in contact fit with the outer wall of the galvanized basket and top surfaces in contact fit with the lower surfaces of the edges of the galvanized basket, the outer side surfaces are perpendicular to the top surfaces, the top surfaces of the adjacent "7" shaped contact convex parts 319 are positioned on the same horizontal plane, and the outer side surfaces of the adjacent "7" shaped contact convex parts 319 are positioned on the same circular ring surface.

The first lifting mechanism 33 comprises a first reduction gearbox 331 fixedly connected with the partition plate 10 of the shell 1, a lifting cylinder 332, a connecting plate 333 connected with the lifting cylinder 332, and lifting screw rods 334 respectively connected to two sides of the connecting plate 333, one end of each lifting screw rod 334 is connected with the first reduction gearbox 331, and the lifting cylinder 332 is used for driving the two lifting screw rods 334 to synchronously move up and down along a direction parallel to the first main shaft 32. When the lifting cylinder 332 is started, the telescopic motion of the lifting screw 334 can drive the first main shaft 32 to move up or down, and the first reduction box 331 is relatively immobile.

The rotary servo motor 321 is arranged on the first reduction gearbox 331, an external spline gear 324 is sleeved outside a first output shaft 322 of the rotary servo motor and then vertically extends into the first reduction gearbox 331 to be matched and connected with an internal spline gear 325, and a first-stage gear 323 is sleeved outside the internal spline gear 325; the first-stage gear 323 is meshed with the intermediate gear 326, an intermediate shaft 327 is sleeved at the center of the intermediate gear 326, and the upper end and the lower end of the intermediate shaft 327 are connected with the first reduction gearbox 331 through bearings; the first main shaft 32 vertically passes through the first reduction gearbox 331, a first shaft sleeve 328 is sleeved on the part, corresponding to the first reduction gearbox 331, of the outer wall, a third-stage gear 329 is connected outside the first shaft sleeve 328 in a matching manner, and the third-stage gear 329 is connected with the intermediate gear 326 in a meshing manner. When the rotary servo motor 321 is started, the first output shaft 322 drives the first stage gear 323 to rotate synchronously, so as to drive the intermediate gear 326 to rotate, thereby driving the third stage gear 329 to rotate, driving the first main shaft 32 and the first shaft sleeve 328 to rotate synchronously, and further realizing circumferential rotation of the first main shaft 32.

As shown in fig. 12-15, the centrifugal device is used for lifting the galvanized basket 4 on the bracket 31 and then performing rotary centrifugation, and comprises a second main shaft 51 which can rotate circumferentially under the driving of a rotary servo motor 511, a centrifugal clamping mechanism 52 which is connected with the bottom end of the second main shaft 51 and can rotate synchronously with the second main shaft 51, a second lifting mechanism 53 which is used for driving the second main shaft 51 and the centrifugal clamping mechanism 52 to move up and down synchronously, and a centrifugal cover 54 which is covered on the periphery of the galvanized basket 4 and can move up and down under the driving of a centrifugal lifting mechanism 55; the centrifugal clamping mechanism 52 is driven by the clamping cylinder 521 to clamp or loosen the galvanizing basket (the above is related to the prior art, and is not described herein), and includes a cover 522 capable of covering the opening at the upper portion of the galvanizing basket, so as to prevent the workpiece from separating from the galvanizing basket under high-speed rotation, and prevent the molten zinc from being thrown out from the opening at the upper portion of the galvanizing basket. The bottom end of the second main shaft 51 is provided with a pneumatic slip ring (which is the prior art and is not described again); the second lifting mechanism 53 has a structure similar to that of the first lifting mechanism 33, and includes a second reduction gearbox 531 fixedly connected to the housing 1, a lifting cylinder 532, a connecting plate 533 connected to the lifting cylinder 532, and lifting screws 534 respectively connected to two sides of the connecting plate 533, wherein one end of each lifting screw 534 is connected to the second reduction gearbox 531, and the lifting cylinder 532 is used for driving the two lifting screws 534 to synchronously move up and down along a direction parallel to the second main shaft 51. When the lifting cylinder 532 is started, the telescopic motion of the lifting screw 534 can drive the second main shaft 51 to move up or down, and the second reduction gearbox 531 is relatively immobile.

The rotary servo motor 511 is arranged on the second reduction gearbox 531, an external spline gear is sleeved outside a second output shaft of the rotary servo motor and then vertically extends into the second reduction gearbox 531 to be matched and connected with the internal spline gear, and a first-stage gear is sleeved outside the internal spline gear; the first-stage gear is meshed with the intermediate gear, an intermediate shaft is sleeved at the center of the intermediate gear, and the upper end and the lower end of the intermediate shaft are connected with a second reduction gearbox 531 through bearings; the second spindle 51 is sleeved with a second shaft sleeve corresponding to the outer wall of the second reduction gearbox 531, and a third-stage gear is connected outside the second shaft sleeve in a matching manner and is meshed with the intermediate gear. When the rotary servo motor 511 is started, the second output shaft drives the first-stage gear to rotate synchronously, so as to drive the intermediate gear to rotate, thereby driving the third-stage gear to rotate, driving the second spindle 51 and the second spindle sleeve to rotate synchronously, and further realizing circumferential rotation of the second spindle 51.

The centrifugal lifting mechanism 55 comprises a connecting plate 551 connected with the shell 1, two lifting rods 552 penetrating through the connecting plate 551, and a lifting cylinder 553 for driving the two lifting rods 552 to synchronously move up and down along the direction parallel to the first main shaft 32, wherein the bottom end of the lifting cylinder 553 is connected with the centrifugal cover 54, the centrifugal cover 54 is a hollow cylindrical structure with the height slightly larger than that of the galvanizing basket 4, and can block zinc liquid thrown out when the galvanizing basket 4 is centrifuged and drain the zinc liquid to fall into the galvanizing pool 2. Of course, the centrifuge shield 54 may be a hollow frustum-shaped structure having a height slightly greater than that of the galvanizing basket 4 and a lower opening larger than an upper opening.

As shown in fig. 16 and 17, the transferring device comprises a third main shaft 62 which can rotate circumferentially under the driving of a rotary servo motor 621, a turnover mechanism 61 which is connected with the bottom end of the third main shaft 62 and can rotate synchronously with the third main shaft 62, a third lifting mechanism 64 which is used for driving the third main shaft 62 and the turnover mechanism 61 to move synchronously up and down, and a claw mechanism 63 which is connected with the turnover mechanism 61 and is used for clamping the galvanized basket 4. The third lifting mechanism 64 is similar to the first lifting mechanism 33 in structure, and includes a third reduction box 641 fixedly connected to the housing 1, a lifting cylinder 632, a connecting plate 633 connected to the lifting cylinder 632, and lifting screws 634 respectively connected to two sides of the connecting plate 633, wherein one end of the lifting screws 634 is connected to the third reduction box 641, and the lifting cylinder 632 is configured to drive the two lifting screws 634 to move up and down synchronously along a direction parallel to the third main shaft 62. When the lifting cylinder 632 is activated, the telescopic motion of the lifting screw 634 can drive the third main shaft 62 to move up or down, and the third reduction box 641 is relatively stationary.

The rotary servo motor 621 is installed on the third reduction gearbox 641, and a third output shaft thereof is sleeved with an external spline gear and then vertically extends into the third reduction gearbox 641 to be matched and connected with the internal spline gear, and the internal spline gear is sleeved with a first-stage gear; the first stage gear is engaged with the intermediate gear, the center of the intermediate gear is sleeved with an intermediate shaft, and the upper end and the lower end of the intermediate shaft are connected with the third reduction gearbox 641 through a bearing; the part of the outer wall of the third main shaft 62 corresponding to the third reduction gearbox 641 is sleeved with a third shaft sleeve, a third-stage gear is connected outside the third shaft sleeve in a matching manner, and the third-stage gear is meshed with the intermediate gear. When the rotary servo motor 621 is started, the third output shaft drives the first-stage gear to rotate synchronously, so as to drive the intermediate gear to rotate, thereby driving the third-stage gear to rotate, driving the third main shaft 62 and the third shaft sleeve to rotate synchronously, and further realizing circumferential rotation of the third main shaft 62.

The turnover mechanism 61 comprises a turnover speed reducer 612 connected with the third main shaft 62 and a turnover shaft 611 penetrating out of one side face of the turnover speed reducer 612, the turnover shaft 611 is perpendicular to the third main shaft 62, the jaw mechanism 63 (which is any fixture capable of realizing self-centering in the prior art and is not described in detail in the specific structure) is connected with the turnover shaft 611, and the turnover speed reducer 612 controls the turnover shaft 611 to rotate circumferentially by taking the central axis thereof as the central axis, so that the jaw mechanism 63 is driven to turn over and pour the galvanized basket 4 after clamping the galvanized basket.

As shown in fig. 18 and 19, the galvanizing bath 2 is square, but may also be round or oval, the galvanizing device and the centrifugal device are located right above the galvanizing bath 2, and the third main shaft 62 of the transfer device is installed at the edge position of the insulating layer 21 of the galvanizing bath 2 and is located on the straight line of the symmetry axis of the galvanizing bath 2. The shell 1 comprises a heat dissipation area 11 positioned right above the galvanizing bath 2, a left dust collection area 12 and a right dust collection area 13 which are respectively positioned at two sides of the heat dissipation area 11, wherein the left dust collection area 12 and the right dust collection area 13 are used for collecting smoke dust, so that excessive dust and other impurities are prevented from being stored in the upper surface area of the galvanizing bath 2, at least one air outlet 14 and at least one air supply hole 15 are formed between the heat dissipation area 11 and the left dust collection area 12, and at least one air outlet 16 and at least one air supply hole 17 are formed between the heat dissipation area 11 and the right dust collection area 13; the air outlet hole 14 is connected with an air outlet pipeline 19, the air outlet pipeline 19 is communicated with the outside of the shell 1 and used for exhausting hot air in the heat dissipation area 11 to the outside, the air supply hole 15 is connected with an air supply pipeline 18, and the air supply pipeline 18 is connected with a fan outside the shell and used for conveying cold air into the heat dissipation area 11; similarly, the air outlet 16 is provided with another air outlet pipeline communicated with the outside, and the air supply outlet 17 is provided with another air supply pipeline connected with an external fan.

A circle which is circumscribed with the four bracket bodies on the bracket 31 is made by taking the center of the galvanizing bath 2 as the center of a circle, and is defined as a first circle A, and the size of the first circle A is slightly smaller than that of an inscribed circle of the galvanizing bath 2; taking the orthographic projection of the third main shaft 62 as a circle center, taking the vertical distance from the central axis of the third main shaft 62 to the central axis of the galvanized basket clamped by the turnover mechanism 62 as a radius to make a circle, and defining the circle as a second circle B; the first circle A intersects with the second circle B, and the second circle B passes through the central axes of two adjacent bracket bodies, and the second circle B also intersects with the extension lines of two adjacent ridge lines of the galvanizing bath 2.

As shown in fig. 20 to 29, the transfer device has a centrifugal position, a waiting position, a discharging position, a loading position, and a discharging position, wherein the five stations are sequentially arranged in a clockwise direction (or in a counterclockwise direction) with the third spindle 62 as a center, and for facilitating discharging of different types of materials, the discharging position may include a first discharging position and a second discharging position, and the second discharging position is located between the first discharging position and the waiting position, i.e., the centrifugal position, the waiting position, the second discharging position, the first discharging position, the loading position, and the discharging position are arranged in the clockwise direction. When the galvanizing basket is placed on the bracket body and the material to be processed is dipped below the zinc level of the galvanizing bath 2, the bracket body is defined as being in the galvanizing position. It can also be derived from the above that the transfer device reciprocates through a rotation angle of 270 ° about the third main shaft 62.

When the zinc plating basket is in a centrifugal position, the turnover mechanism 61 is used for grabbing the zinc plating basket 4 which is centrifuged on the centrifugal device; when the zinc-plated basket 4 is placed at a material feeding position, the turnover mechanism 61 can turn over the zinc-plated basket 4 in a vertical plane; in the zinc-lowering position, the tilting mechanism 61 can place the galvanizing basket 4 on the bracket body 311.

The hot galvanizing production process adopting the hot galvanizing production system comprises the following steps:

1) Preheating an empty basket: the first lifting mechanism 33 drives the first main shaft 32 to drive the brackets 31 to move downwards to a galvanizing position, and an empty galvanizing basket on each bracket body 311 is soaked below the liquid level of the galvanizing bath 2 to preheat the galvanizing basket and prepare for galvanizing a workpiece; at this time, the centrifugal clamping mechanism 52 of the centrifugal device is positioned right above the position of the first galvanized basket 41 on the first bracket body; the first bracket body is positioned at the position a;

2) When the preheating treatment is completed or the galvanizing procedure is started, performing ash scraping treatment on the surface of the zinc liquid above the first galvanizing basket 41;

3) The first main shaft 32 drives the bracket 31 to move upwards until the clamping part of the galvanizing basket is exposed out of the upper surface of the zinc liquid pool 2, and most part of the galvanizing basket is still soaked in the zinc liquid of the zinc liquid pool 2;

4) Centrifuging a first empty basket: the centrifugal clamping mechanism 52 and the second main shaft 51 move downwards under the driving of the second main shaft 51, the centrifugal clamping mechanism 52 is matched with the clamping part, the first galvanizing basket 41 is grabbed and then moves upwards, the first galvanizing basket 41 is rotated and centrifuged while the first galvanizing basket 41 is lifted, and after the first galvanizing basket 41 is completely separated from the liquid level of the galvanizing bath 2, the second main shaft 51 rotates at a high speed to centrifuge the first galvanizing basket 41;

5) Feeding the first galvanized basket, namely stopping the transfer device at a waiting position until the first galvanized basket 41 finishes centrifuging, rotating the transfer device anticlockwise to grab the first galvanized basket 41 from the centrifugal clamping mechanism 52, and rotating the first galvanized basket 41 clockwise to a discharging position around the third main shaft 62; in order to avoid interference, after the transfer device grabs the first galvanized basket 41, the centrifugal clamping mechanism 52 ascends along with the second spindle 51 under the driving of the second lifting mechanism 53 to avoid a space for the transfer device to rotate, or after the transfer device grabs the first galvanized basket 41, the transfer device descends along with the third spindle 62 under the driving of the third lifting mechanism 64 to avoid the relatively immovable centrifugal clamping mechanism 52; after the turnover mechanism 61 turns over the first galvanizing basket 41 for material pouring (even if the material to be processed is not placed in the first galvanizing basket 41 at this time), the turnover mechanism continues to rotate clockwise to the upper material level, and the material to be processed is placed in the first galvanizing basket 41;

6) And (3) galvanizing: the first spindle 32 rotates clockwise 90 degrees with the bracket 31, so that the centrifugal clamping mechanism 52 of the centrifugal device is positioned right above the position of the first galvanized basket 41 on the second bracket body 312, the transfer device continues to rotate clockwise around the third spindle 62 to the lower galvanizing position, and the first galvanized basket 41 which is finished to be loaded is placed on the first bracket body; before the first galvanizing basket 41 is placed into the galvanizing bath 2, ash scraping treatment is carried out on the surface of the zinc liquid; the first bracket body is transferred from the position a to the position b; the transfer device continues to rotate clockwise about the third spindle 62 to the waiting position;

7) Centrifuging a second empty basket: when the transfer device transfers the first galvanized basket 41 from the loading position to the unloading position, the centrifugal clamping mechanism 52 and the second spindle 51 are driven by the second spindle 51 to move downwards, the centrifugal clamping mechanism 52 is matched with the clamping part, the second galvanized basket 42 positioned at the position a is grabbed and then moves upwards, the second galvanized basket 42 is rotated and centrifuged when the second galvanized basket 42 ascends, and the second spindle 51 rotates at a high speed to centrifuge the second galvanized basket 42 after the second galvanized basket 42 is completely separated from the liquid level of the molten zinc pool 2; at this time, the material in the first galvanizing basket 41 is in the galvanizing process;

8) The first main shaft 32 drives the bracket 31 to move downwards until the clamping part of the galvanizing basket is immersed in the zinc liquid pool 2;

9) Feeding a second galvanizing basket: the transfer device stops at a waiting position and rotates anticlockwise after the second galvanizing basket 41 finishes centrifuging, the second galvanizing basket 42 is grabbed from the centrifugal clamping mechanism 52, and the second galvanizing basket rotates clockwise around the third main shaft 62 to a discharging position; in order to avoid interference, after the transfer device grabs the second galvanized basket 42, the centrifugal clamping mechanism 52 ascends along with the second spindle 51 under the driving of the second lifting mechanism 53 to avoid space for the transfer device to rotate, or after the transfer device grabs the second galvanized basket 42, the transfer device descends along with the third spindle 62 under the driving of the third lifting mechanism 64 to avoid the relatively immovable centrifugal clamping mechanism 52; after the turnover mechanism 61 turns over the second galvanizing basket 42 for material pouring (even if the material to be processed is not placed in the second galvanizing basket 42 at the moment), the second galvanizing basket continues to rotate clockwise to the material feeding position, and the material to be processed is placed in the second galvanizing basket 42;

10 ) galvanization is performed: the first spindle 32 rotates clockwise 90 degrees with the bracket 31, so that the centrifugal clamping mechanism 52 of the centrifugal device is positioned right above the position of the third galvanizing basket 43 on the third bracket body 313, the transfer device continues to rotate clockwise around the third spindle 62 to a lower galvanizing position, the first spindle 32 moves upwards with the bracket 31 until the clamping part of the galvanizing basket is exposed out of the upper surface of the galvanizing bath 2, and then the second galvanizing basket 42 which finishes feeding is placed on the second bracket body 312; before the second galvanizing basket 42 is put into the galvanizing bath 2, at least the surface of the molten zinc above the second bracket body 312 is subjected to ash scraping treatment; at this time, the first carriage body is shifted from the position b to the position c, and the second carriage body 312 is shifted from the position a to the position b; the transfer device continues to rotate clockwise about the third spindle 62 to the waiting position;

11 Third empty basket centrifuge: when the transfer device transfers the second galvanized basket 42 from the upper material position to the lower zinc position, the centrifugal clamping mechanism 52 and the second main shaft 51 are driven by the second main shaft 51 to move downwards, the centrifugal clamping mechanism 52 is matched with the clamping part, the third galvanized basket 43 positioned at the position a is grabbed and then moves upwards, the third galvanized basket 43 is rotated and centrifuged while rising, and after the third galvanized basket 43 is completely separated from the liquid level of the molten zinc pool 2, the second main shaft 51 rotates at a high speed to centrifuge the third galvanized basket 43; at this time, the materials in the first galvanizing basket 41 and the second galvanizing basket 42 are in the galvanizing process;

12 The first main shaft 32 carries the bracket 31 to move downwards until the clamping part of the galvanizing basket is immersed in the zinc liquid pool 2;

13 ) third galvanizing basket feeding: the transfer device stops at a waiting position and rotates anticlockwise after the third galvanizing basket 43 finishes centrifuging, the third galvanizing basket 43 is grabbed from the centrifugal clamping mechanism 52 and rotates clockwise around the third main shaft 62 to a discharging position; in order to avoid interference, after the transfer device grabs the third galvanized basket 43, the centrifugal clamping mechanism 52 ascends along with the second spindle 51 under the driving of the second lifting mechanism 53 to avoid a space for the transfer device to rotate, or after the transfer device grabs the third galvanized basket 43, the transfer device descends along with the third spindle 62 under the driving of the third lifting mechanism 64 to avoid the relatively immovable centrifugal clamping mechanism 52; after the turnover mechanism 61 turns over the third galvanizing basket 43 to pour the material (even if the material to be processed is not still placed in the third galvanizing basket 43 at this time), the turnover mechanism continues to rotate clockwise to the upper material level, and the material to be processed is placed in the third galvanizing basket 43;

14 ) galvanization is performed: the first spindle 32 rotates clockwise 90 degrees with the bracket 31, so that the centrifugal clamping mechanism 52 of the centrifugal device is positioned right above the position of the fourth galvanizing basket 44 on the fourth bracket body 314, the transfer device continues to rotate clockwise around the third spindle 62 to a lower galvanizing position, the first spindle 32 drives the bracket 31 to move upwards until the clamping part of the galvanizing basket is exposed out of the upper surface of the galvanizing bath 2, and then the third galvanizing basket 43 which finishes feeding is placed on the third bracket body 313; before the third galvanizing basket 43 is placed in the galvanizing bath 2, at least the surface of the molten zinc above the third bracket body 313 is subjected to ash scraping treatment; at this time, the first carriage body is transferred from the c position to the d position, the second carriage body 312 is transferred from the b position to the c position, and the third carriage body 313 is transferred from the a position to the b position; the transfer device continues to rotate clockwise about the third spindle 62 to the waiting position;

15 A fourth empty basket centrifuge: when the transfer device transfers the third galvanizing basket 43 from the loading position to the unloading position, the centrifugal clamping mechanism 52 and the second main shaft 51 are driven by the second main shaft 51 to move downwards, the centrifugal clamping mechanism 52 is matched with the clamping part, the fourth galvanizing basket 44 at the position a is grabbed and then moves upwards, the fourth galvanizing basket 44 is rotated and centrifuged while rising, and after the fourth galvanizing basket 44 is completely separated from the liquid level of the galvanizing bath 2, the second main shaft 51 rotates at a high speed to centrifuge the fourth galvanizing basket 44; at this time, the materials in the first, second and third galvanizing

baskets

41, 42 and 43 are in the galvanizing process;

16 The first main shaft 32 carries the bracket 31 to move downwards until the clamping part of the galvanizing basket is immersed into the zinc liquid in the zinc liquid pool 2;

17 Feeding a fourth galvanizing basket: the transfer device stops at a waiting position and rotates anticlockwise after the fourth galvanizing basket 44 finishes centrifuging, the fourth galvanizing basket 44 is grabbed from the centrifugal clamping mechanism 52 and rotates clockwise around the third main shaft 62 to a discharging position; after the turnover mechanism 61 turns over the fourth galvanizing basket 44 for material pouring (even if the material to be processed is not still placed in the fourth galvanizing basket 44 at this time), the turnover mechanism continues to rotate clockwise to the material feeding position, and the material to be processed is placed in the fourth galvanizing basket 44;

18 ) galvanizing: the first spindle 32 rotates clockwise 90 degrees with the bracket 31, so that the centrifugal clamping mechanism 52 of the centrifugal device is positioned right above the position of the first galvanized basket 41 on the first bracket body, the transfer device continues to rotate clockwise around the third spindle 62 to the lower galvanizing position, the first spindle 32 moves upwards with the bracket 31 until the clamping part of the galvanized basket is exposed out of the upper surface of the molten zinc bath 2, and then the fourth galvanized basket 44 which finishes feeding is placed on the fourth bracket body 314; before the fourth galvanizing basket 44 is placed in the galvanizing bath 2, at least the surface of the molten zinc above the fourth bracket body 314 is subjected to ash scraping treatment; at this time, the first carriage returns to the position a from the position d, the second carriage 312 is transferred to the position d from the position c, the third carriage 313 is transferred to the position c from the position b, and the fourth carriage 314 is transferred to the position b from the position a; the transfer device continues to rotate clockwise about the third spindle 62 to the waiting position;

19 After the fourth bracket 314 finishes adding the material to be processed and is transferred to the position b, the material in the first galvanizing basket 41 on the first bracket rotates for a circle, the galvanizing time is reached, and the galvanizing process is finished, wherein the first galvanizing basket 41 is positioned right below the centrifugal clamping mechanism 52;

20 The surface of the zinc liquid above the bracket 31 is subjected to ash scraping treatment, and the first main shaft 32 drives the bracket 31 to move upwards until the clamping part of the galvanizing basket is exposed out of the upper surface of the zinc liquid pool 2;

21 The centrifugal clamping mechanism 52 and the second main shaft 51 move downwards under the driving of the second main shaft 51, the centrifugal clamping mechanism 52 is matched with the clamping part, the first galvanizing basket 41 is grabbed and then moves upwards, the first galvanizing basket 41 is rotated and centrifuged while the first galvanizing basket 41 is lifted, and after the first galvanizing basket 41 is completely separated from the liquid level of the galvanizing bath 2, the second main shaft 51 rotates at a high speed to centrifuge the first galvanizing basket 41;

22 After the centrifugation is completed, the transferring device grabs the first galvanized basket 41 which is completed with the centrifugation from the centrifugal clamping mechanism 52 and rotates clockwise around the third main shaft 62 to a discharging position; the turnover mechanism 61 turns over the first galvanizing basket 41 to pour the material, so as to transfer the processed material, and then continues to rotate clockwise to the upper material level, and the material to be processed is placed into the first galvanizing basket 41 (if the galvanizing of the whole material is completed, the first galvanizing basket 41 can be vacant);

23 The first main shaft 32 rotates clockwise 90 degrees with the bracket 31, if the galvanizing process is not finished by the materials in the second galvanizing basket 42, the first main shaft 32 can move downwards with the bracket 31 until the clamping part of the galvanizing basket is immersed in the galvanizing liquid pool 2, and the steps 20 to 22 are repeated when the galvanizing time is up; generally, after the material in the first galvanizing basket 41 finishes the material pouring operation, the material in the second galvanizing basket 42 also finishes the galvanizing process;

24 The centrifugal clamping mechanism 52 and the second main shaft 51 move downwards under the driving of the second main shaft 51, the centrifugal clamping mechanism 52 is matched with the clamping part, the second galvanized basket 42 is grabbed and then moves upwards, the second galvanized basket 42 is rotated and centrifuged while the second galvanized basket 42 is lifted, and after the second galvanized basket 42 is completely separated from the liquid level of the molten zinc pool 2, the second main shaft 51 rotates at a high speed to centrifuge the second galvanized basket 42;

25 After the centrifugation is completed, the transfer device picks up the centrifuged second galvanized basket 42 from the centrifugal clamping mechanism 52 and rotates clockwise around the third main shaft 62 to a discharging position; the turnover mechanism 61 turns over the second galvanizing basket 42 to pour the material, so as to transfer the processed material, and then continue to rotate clockwise to the upper material level, and place the material to be processed into the second galvanizing basket 42 (if the whole material is galvanized, the second galvanizing basket 42 may be empty, or the number of the galvanizing baskets may be three, or at least two);

26 The first main shaft 32 rotates clockwise 90 degrees with the bracket 31, and the centrifugal clamping mechanism 52 is matched with the transfer device to finish the material pouring process of the third galvanized basket 43 and the fourth galvanized basket 44;

27 Repeating the action cycle until the galvanizing process of the whole material is completed.

The foregoing detailed description is intended to illustrate and not limit the invention, which is intended to be within the spirit and scope of the appended claims, and any changes and modifications that fall within the true spirit and scope of the invention are intended to be covered by the following claims.

Claims

1. A hot galvanizing production process is characterized by comprising the following steps:

1) Preheating an empty basket: the first main shaft (32) takes the bracket (31) comprising a plurality of bracket bodies (311) to descend to a galvanizing position, and an empty galvanizing basket on the bracket bodies (311) is soaked in the galvanizing bath (2);

2) Centrifuging a first empty basket: the centrifugal clamping mechanism (52) descends along with the second main shaft (51), grabs the first galvanized basket (41) on the first bracket body right below the centrifugal clamping mechanism, and when the first galvanized basket (41) is completely separated from the liquid level of the molten zinc pool (2), the second main shaft (51) rotates at a high speed for centrifugation;

3) Feeding a first galvanized basket: the first galvanized basket (41) after centrifugation is grabbed from the centrifugal clamping mechanism (52) by the transfer device, rotates to the upper material level around the third main shaft (62) in the circumferential direction, and the material to be processed is placed into the first galvanized basket (41);

4) And (3) galvanizing: the first main shaft (32) rotates circumferentially until a second bracket body is positioned right below the second main shaft (51), the second bracket body is adjacent to the first bracket body, the transfer device rotates circumferentially around a third main shaft (62), and after the first galvanized basket (41) which finishes feeding is placed on the first bracket body, the transfer device continues to rotate circumferentially around the third main shaft (62) until the first galvanized basket is in a waiting position;

5) Centrifuging a second empty basket: the centrifugal clamping mechanism (52) descends along with the second main shaft (51), grabs a second galvanized basket (42) on a second bracket body (312) positioned right below the centrifugal clamping mechanism, and after the second galvanized basket (42) is completely separated from the zinc liquid pool (2), the second main shaft (51) rotates at a high speed for centrifugation;

7) After materials in the first galvanizing basket (41) are galvanized, the first main shaft (32) rotates in the circumferential direction until the first bracket body is positioned under the second main shaft (51), the centrifugal clamping mechanism (52) descends along with the second main shaft (51), the first galvanizing basket (41) is grabbed, the second main shaft (51) drives the centrifugal clamping mechanism (52) to ascend, the first galvanizing basket (41) rotates and centrifuges, and when the first galvanizing basket (41) is completely separated from the galvanizing liquid pool (2), the second main shaft (51) rotates and centrifuges at a high speed;

8) After centrifugation is finished, the transfer device circumferentially rotates around the third main shaft (62) to a centrifugal position, the centrifuged first galvanized basket (41) is grabbed from the centrifugal clamping mechanism, circumferentially rotates around the third main shaft (62) to a blanking position, after the first galvanized basket (41) is turned over and poured, the transfer device continuously circumferentially rotates around the third main shaft (62) to the blanking position, and the material to be processed is placed into the first galvanized basket (41) again;

9) Repeating the above actions until the materials in each galvanizing basket finish galvanizing, or repeating the above cycle until all the materials finish galvanizing;

before the step 2), the first main shaft (32) with the bracket (31) ascends until the clamping part of the galvanizing basket is exposed out of the upper surface of the galvanizing bath (2).

2. A hot dip galvanizing production process according to claim 1, characterized in that: after said step 6), after the second galvanizing basket (42) is separated from the second bracket body, the bracket (31) is lowered to the galvanizing station along with the first main shaft (32).

3. A hot dip galvanizing production process according to claim 2, characterized in that: in the step 7), the first main shaft (32) with the bracket (31) ascends until the clamping part of the galvanizing basket is exposed out of the upper surface of the galvanizing bath (2), and the centrifugal clamping mechanism (52) descends along with the second main shaft (51) to grab the first galvanizing basket.

4. A hot dip galvanizing production process according to claim 1, characterized in that: and in the step 2), the second spindle (51) drives the centrifugal clamping mechanism (52) to ascend, and simultaneously rotates and centrifuges the first galvanizing basket.

5. The hot galvanizing production process according to claim 1, characterized in that: and in the step 5), the second galvanized basket is rotated and centrifuged while the second spindle (51) drives the centrifugal clamping mechanism (52) to ascend.

6. The hot galvanizing production process according to claim 1, characterized in that: before the step 2), performing ash scraping treatment on the surface of the molten zinc above the first bracket body.

7. The hot galvanizing production process according to claim 1, characterized in that: in the step 4), before the first galvanizing basket (41) is placed on the first bracket body, ash scraping treatment is carried out on the surface of the molten zinc above the first bracket body.

8. The hot galvanizing production process according to claim 1, characterized in that: the bracket body comprises a first bracket body, a second bracket body (312) and a third bracket body (313) which are adjacent in sequence, and after the third bracket body (313) finishes adding the material to be processed, the material in a first galvanizing basket (41) on the first bracket body just finishes the galvanizing process.

9. The hot galvanizing production process according to claim 1, characterized in that: in the step 3), the transfer device rotates to the blanking position circumferentially around the third main shaft (62), and rotates to the blanking position after turning over and pouring the first galvanizing basket (41).

10. A hot dip galvanizing production process according to claim 1, characterized in that: in the step 3), after the transfer device grabs the first galvanized basket (41), the centrifugal clamping mechanism (52) ascends along with the second main shaft (51) so as to avoid a space for the transfer device to rotate; or when the transfer device grabs the first galvanizing basket (41), the transfer device descends to avoid the centrifugal clamping mechanism (52).