Series-parallel zinc oxide collection system

Abstract

The present invention discloses a series-parallel zinc oxide collection system, which relates to the technical field of particulate gas distribution, including a front parallel box and a rear parallel box, four air distribution box groups are set between the front parallel box and the rear parallel box, and the four air distribution box groups are sequentially a first box group, a second box group, a third box group and a fourth box group; a rear side partition structure is fixedly provided in the rear parallel box; a parallel air inlet is provided on the front parallel box and a series air inlet is provided on its side; a channel opening and closing device is provided in the front parallel box, the channel opening and closing device is used to separate or open the parallel channels in the front parallel box, and the channel opening and closing device located between the first box group and the second box group blocks the series air inlet when the parallel channels are opened; an air outlet opening and closing device is installed in the front parallel box. The present invention realizes series-parallel switching of the air distribution boxes, achieves the purpose of taking into account both the temporary production of superior zinc oxide and the full-load production of daily type I zinc oxide, and is conducive to controlling the production cost and quality of type I zinc oxide.

Description

Technical Field

[0001] The present invention relates to the technical field of particle gas delivery and distribution, and in particular to a series-parallel zinc oxide collection system. Background Art

[0002] Indirect zinc oxide production process, the zinc-containing material is first melted in a melting crucible, the molten zinc liquid is introduced into an evaporation crucible and continuously generates zinc vapor under high temperature heating, such as Figure 19 As shown, zinc vapor is sprayed into the oxidation chamber to oxidize and form zinc oxide particles, which are then guided to the collection system through air flow for collection. Figure 21 As shown, the cooling pipe from the oxidation chamber to the collection system passes through the S-shaped path to naturally cool the air flow so that the air flow reaching the collection system reaches a temperature that is not likely to cause component ablation, such as 180°C; Figure 20 As shown in the figure, the collection system uses a wind box to distribute the airflow, and several collection bags are installed at the bottom of the wind box, such as Figure 19 and Figure 21 As shown, the bottom of the collecting bag is connected to the collecting bucket; after the air flow passes through the collecting bag, the gas flows out from the collecting bag, and the zinc oxide particles it carries are blocked by the collecting bag and gradually fall into the collecting bucket after being blocked, completing the collection purpose.

[0003] To control raw material costs, zinc slag and other zinc-containing materials are currently used to produce zinc oxide. However, zinc slag contains a high concentration of impurities such as iron and lead. During the production process, these impurities are inevitably sprayed into the oxidation chamber with the zinc vapor and then carried into the collection bag with the airflow, resulting in a high impurity content in the produced zinc oxide. Currently, through process optimization, the impurity content of the zinc oxide collected in the collection system generally meets the Type I zinc oxide specifications specified in "GB / T3185-2016 Zinc Oxide (Indirect Method)", meeting the requirements of most downstream industries. However, some specialized industries (such as the feed industry) have extremely high purity requirements for zinc oxide, such as lead content not exceeding 10ppm. Therefore, the Type I zinc oxide produced above cannot meet these requirements. Therefore, the production of this premium zinc oxide can only be considered using zinc ingots as a raw material. However, the price of zinc ingots is more than double that of zinc slag, resulting in a high cost of producing premium zinc oxide, which does not offer a price advantage.

[0004] During long-term production, the applicant discovered that the farther the collection system is from the cooling pipe, the higher the purity of the zinc oxide. This is because the zinc oxide that enters the collection system's air distribution box, which is adsorbed with impurity particles, weighs more and is therefore more likely to settle toward the collection bag first. Zinc oxide that is not adsorbed with impurity particles is more likely to drift farther with the airflow before settling toward the collection bag, resulting in differences in zinc oxide purity due to the distance it drifts. However, because existing collection systems employ parallel air distribution boxes, each corresponding to a collection hopper, zinc oxide of varying purities produced at the air distribution box due to varying drift distances ultimately ends up in the same collection hopper and is ultimately discharged through the same auger mechanism, making it difficult to extract zinc oxide of varying qualities separately. Furthermore, when using zinc slag to produce zinc oxide, even if zinc oxide of higher purity is produced at a more distant location, its impurity content does not meet the requirements for premium-grade zinc oxide. For example, the lead content is only 30 ppm at its best.

[0005] To this end, the inventors directly transformed a group of air distribution boxes corresponding to a certain boiler into a series mode, significantly extending the air flow distance at the collection system, so that the air distribution boxes at the end of the series can settle out the premium-grade zinc oxide that meets the requirements. Although this method can produce premium-grade zinc oxide, the air distribution boxes in the first half of the series, especially the air distribution boxes at the beginning of the series, will produce other zinc oxides that are lower than the type I zinc oxide index. This low-index zinc oxide needs to be subsequently processed to reach the type I zinc oxide index. This subsequent processing is a simple impurity removal process, or when premium-grade zinc oxide is not needed, this low-index zinc oxide is mixed with premium-grade zinc oxide to obtain conventional type I zinc oxide. Due to the relatively low demand for premium zinc oxide, multiple production systems in the actual workshop are usually fully loaded to produce conventional type I zinc oxide, and some are used to produce premium zinc oxide when there is special demand. Therefore, during the full-load production of type I zinc oxide, the zinc oxide produced by the production system with wind boxes in series needs to be subsequently mixed, which increases production costs caused by labor and equipment, prolongs the production cycle, and often causes quality problems such as material agglomeration after the mixing process. To this end, it is necessary to consider transforming one or several production systems to take into account the above-mentioned production characteristics for adaptive production. More specifically, its collection system should be able to switch the wind boxes in series and in parallel. Based on this, the inventors transformed the existing collection system and obtained the present invention. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a series-parallel zinc oxide collection system that realizes series-parallel switching of air distribution boxes, achieves the purpose of taking into account both the temporary production of superior zinc oxide and the daily full-load production of type I zinc oxide, and is beneficial to controlling the production cost and quality of type I zinc oxide.

[0007] To solve the above technical problems, the technical solution of the present invention is: a series-parallel zinc oxide collection system, comprising a front parallel box and a rear parallel box, four air distribution box groups are provided between the near side walls of the front parallel box and the rear parallel box, each of the air distribution box groups includes at least one air distribution box, and the four air distribution box groups are sequentially a first box group, a second box group, a third box group and a fourth box group for forming a series connection; a rear side partition structure is fixedly provided in the rear parallel box between the second box group and the third box group; a parallel air inlet is provided on the front parallel box at a position corresponding to the position between the second box group and the third box group, and the parallel air inlet is used to connect to the cooling pipe; A series air inlet is provided on the front parallel box on the side of the parallel air inlet close to the first box group, and a series air inlet duct connected to the cooling duct is provided on the series air inlet; a channel opening and closing device is provided in the front parallel box between the first box group and the second box group and between the third box group and the fourth box group, respectively, the channel opening and closing device is used to separate or open the parallel channels in the front parallel box, and the channel opening and closing device between the first box group and the second box group blocks the series air inlet when the parallel channel is opened; an air outlet opening and closing device for opening and closing the parallel air inlets is installed in the front parallel box.

[0008] As an optimal technical solution, the channel opening and closing device includes opening and closing shaft through-holes respectively opened on the bottom and top of the front parallel box, and the channel opening and closing shaft is installed through the opening and closing shaft through-holes, and opening and closing shaft seats are respectively installed at the upper and lower ends of the channel opening and closing shaft outside the front parallel box, and the channel opening and closing shaft rotates with the opening and closing shaft seats; a channel opening and closing plate is fixed on the channel opening and closing shaft located in the front parallel box, and the channel opening and closing plate separates the parallel channels in the front parallel box when it rotates between the first box group and the second box group or between the third box group and the fourth box group; the outer end of the channel opening and closing shaft is connected to a channel opening and closing controller.

[0009] As a preferred technical solution, the channel opening and closing shaft in the channel opening and closing device located between the first box group and the second box group is located between the series air inlets and the parallel air inlets, and the corresponding channel opening and closing plate blocks the series air inlets when it rotates to the series air inlets.

[0010] As a preferred technical solution, the channel opening and closing shaft is provided with an air outlet opening and closing shaft hole axially penetrating therethrough; the air outlet opening and closing device comprises an air outlet opening and closing shaft rotatably installed in the air outlet opening and closing shaft hole, a linkage slot arranged along the length direction is provided on the side wall of the channel opening and closing shaft located in the front parallel box, an air outlet opening and closing connecting piece extending out of the linkage slot is fixedly provided on the air outlet opening and closing shaft, an air outlet opening and closing plate is fixedly provided on the air outlet opening and closing connecting piece, and the air outlet opening and closing plate is pressed against the corresponding channel opening and closing plate when the parallel air inlet is opened; The groove edge on the linkage groove close to the parallel air inlet is the linkage groove edge, and a delayed linkage interval is provided between the linkage groove edge and the air outlet opening and closing plate when the air outlet opening and closing plate opens the parallel air inlet. When the air outlet opening and closing plate closes the parallel air inlet, it first rotates through the delayed linkage interval and then links with the channel opening and closing shaft to rotate, and when the air outlet opening and closing plate closes the parallel air inlet, the channel opening and closing plate separates the parallel channels in the front parallel box; the end of the air outlet opening and closing shaft extending out of the channel opening and closing shaft is connected to an air outlet opening and closing controller.

[0011] As a preferred technical solution, the air vent opening and closing controller includes an opening and closing operation connecting pin radially penetrating and installed on the air vent opening and closing shaft, an opening and closing operation connecting pin is installed on the opening and closing operation connecting pin, and a state maintaining lever for positioning and holding the opening and closing operation lever is fixedly provided on the front parallel box.

[0012] As an optimal technical solution, the linkage groove passes through the channel opening and closing shaft upward, and a limiting collar mounted on the channel opening and closing shaft is rotatably installed in the upper opening and closing shaft seat, and a limiting block located in the linkage groove is fixed on the limiting collar, and the limiting block is used to limit the upper end of the air outlet opening and closing connecting piece; a collar pressure cover is fixed on the top of the upper opening and closing shaft seat.

[0013] As a preferred technical solution, the cooling pipe includes a cooling ascending section and a cooling descending section arranged in sequence, the upper end of the cooling ascending section is connected to the upper end of the cooling descending section adjacent to the downstream, and a deposition box is connected between the lower end of the cooling descending section and the lower end of the cooling ascending section adjacent to the downstream; the upper end of the last cooling ascending section is connected to the parallel air inlet, and the series air inlet duct is connected between the series air inlet and the upper end of the second-last cooling ascending section.

[0014] As an optimal technical solution, a collecting bucket is provided under each of the air distribution boxes, and a collecting bag group is installed at the bottom of the air distribution box and the bottom of the corresponding positions on the front parallel box and the rear parallel box, respectively. The lower end of the collecting bag group is connected to the corresponding collecting bucket below.

[0015] Due to the adoption of the above technical solution, the series-parallel zinc oxide collection system includes a front parallel box and a rear parallel box, four air distribution box groups are provided between the near side walls of the front parallel box and the rear parallel box, each of the air distribution box groups includes at least one air distribution box, and the four air distribution box groups are sequentially used to form a first box group, a second box group, a third box group and a fourth box group in series; a rear side partition structure is fixedly provided in the rear parallel box between the second box group and the third box group; a parallel air inlet is provided on the front parallel box at a position corresponding to the position between the second box group and the third box group, and the parallel air inlet is used to connect the cooling pipe; the front A series air inlet is provided on the parallel box on the side of the parallel air inlet close to the first box group, and a series air inlet duct connected to the cooling duct is provided on the series air inlet; a channel opening and closing device is provided in the front parallel box between the first box group and the second box group and between the third box group and the fourth box group, respectively, the channel opening and closing device is used to separate or open the parallel channels in the front parallel box, and the channel opening and closing device between the first box group and the second box group blocks the series air inlet when the parallel channel is opened; an air outlet opening and closing device for opening and closing the parallel air inlets is installed in the front parallel box. According to the present invention, when the air vent opening and closing device opens the parallel air inlet and the two channel opening and closing devices open the parallel channels in the front parallel box, the four air distribution box groups form a parallel state, which can be used for full-load production of type I zinc oxide, and the zinc oxide indicators output by the four air distribution box groups are relatively balanced, and no post-processing is required, which is beneficial to controlling the production cost and quality of type I zinc oxide, and is beneficial to avoiding the extension of the production cycle caused by subsequent mixing treatment. The air vent opening and closing device closes the parallel air inlet, the two channel opening and closing devices separate the parallel channels of the front parallel box, and after one of the channel opening and closing devices simultaneously opens the series air inlet, the four air distribution boxes form a series state of an M-shaped path, and the airflow containing zinc oxide particles enters the first box group, the second box group, the third box group and the fourth box group in sequence from the series air inlet. The airflow has a long drifting distance, and at least the fourth box group can produce premium grade zinc oxide. Thus, the present invention realizes the series-parallel switching of the air distribution boxes, achieving the purpose of taking into account both the temporary production of premium grade zinc oxide and the full-load production of daily type I zinc oxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are intended only to illustrate and explain the present invention and are not intended to limit the scope of the present invention.

[0017] Figure 1 This is a schematic top view of the cross-sectional structure of the air distribution box group in series connection according to an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the front parallel box;

[0019] Figure 3 yes Figure 2 The state diagram when the tuyere opening and closing plate starts to drive the channel opening and closing plate to rotate during the switching process of the parallel state;

[0020] Figure 4 yes Figure 3 The state diagram when the tuyere opening and closing plate drives the channel opening and closing plate to abut against the side wall of the front parallel box;

[0021] Figure 5 The embodiment of the present invention is Figure 4 Schematic diagram of the overall top-view cross-sectional structure in parallel state;

[0022] Figure 6 yes Figure 4 A magnified schematic diagram of the structure at position Ⅰ in FIG;

[0023] Figure 7 yes Figure 4 The state diagram when the tuyere opening and closing plate starts to drive the channel opening and closing plate to rotate during the switching process of the series state;

[0024] Figure 8 yes Figure 1 A-direction structural diagram;

[0025] Figure 9 yes Figure 8 Right side view of the collection system section;

[0026] Figure 10 yes Figure 8 A magnified schematic diagram of the structure at position II;

[0027] Figure 11 yes Figure 10 Schematic diagram of BB structure in;

[0028] Figure 12 yes Figure 10 Schematic diagram of CC structure in;

[0029] Figure 13 yes Figure 12 State diagram of the tuyere opening and closing controller when in series holding position;

[0030] Figure 14 yes Figure 13 Schematic diagram of the D-direction structure;

[0031] Figure 15 yes Figure 14 A magnified schematic diagram of the EE structure;

[0032] Figure 16 yes Figure 13 State diagram of the tuyere opening and closing controller when it switches to the parallel holding position;

[0033] Figure 17 This is a schematic diagram of confirming the axial position of the channel opening and closing shaft when modifying an existing collection system according to an embodiment of the present invention;

[0034] Figure 18 This is a schematic diagram of the principle of installation of various components of an embodiment of the present invention;

[0035] Figure 19 This is a schematic diagram of the structure of the existing zinc oxide production system;

[0036] Figure 20 yes Figure 19 A schematic diagram of the cross-sectional structure of the collection system from a top view;

[0037] Figure 21 yes Figure 19 Right side view of the collection system.

[0038] In the figure: 1-front parallel box; 11-parallel air inlet; 12-series air inlet; 13-insertion avoidance long hole; 14-insertion hole closing plate; 15-distance line; 16-connection line;

[0039] 2-rear parallel box; 21-rear side partition structure;

[0040] 3-air distribution box group; 31-first box group; 32-second box group; 33-third box group; 34-fourth box group;

[0041] 4-channel opening and closing device; 41-opening and closing shaft through hole; 42-channel opening and closing shaft; 43-opening and closing shaft seat; 44-channel opening and closing plate;

[0042] 5 - tuyere opening and closing device; 51 - tuyere opening and closing shaft; 52 - linkage slot; 53 - tuyere opening and closing connector; 54 - tuyere opening and closing plate; 55 - delayed linkage interval; 56 - tuyere opening and closing controller; 561 - opening and closing operation connecting pin; 562 - opening and closing operating lever; 563 - state holding lever; 564 - holding protrusion;

[0043] 6-limiting collar; 61-limiting block; 62-ring gland;

[0044] 7-cooling pipe; 71-cooling ascending section; 72-cooling descending section; 73-deposition box; 74-series air inlet pipe;

[0045] 8-cloth bellows; 81-cloth collection bag assembly; 82-collection bucket;

[0046] 9- boiler; 91- evaporation crucible; 92- oxidation chamber. DETAILED DESCRIPTION

[0047] The present invention will be further described below with reference to the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. It is understood that those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims.

[0048] like Figure 1 and Figure 5 As shown, the series-parallel zinc oxide collection system includes a front parallel box 1 and a rear parallel box 2. Four air distribution box groups 3 are provided between the near side walls of the front parallel box 1 and the rear parallel box 2. Each of the air distribution box groups 3 includes at least one air distribution box 8. Conventionally, as Figure 8 As shown, a zinc oxide production system includes a boiler 9, a collection system and a cooling pipe 7 therebetween. Four or five air distribution boxes 8 are usually arranged in a collection system. In this embodiment, they are divided into four groups, that is, when there are a total of four air distribution boxes 8, one air distribution box 8 is a group, and when there are a total of five air distribution boxes 8, one air distribution box group 3 includes two air distribution boxes 8. Among them, the front parallel box 1 and the rear parallel box 2 use their inner cavities to form a parallel channel, which connects the four air distribution box groups 3 horizontally, so that the four air distribution box groups 3 are in a parallel state. Of course, this parallel arrangement is well known. It is also well known that the air flow in the cooling pipe 7 is formed by the cold air descending from the collection system and the hot air being sucked from the oxidation chamber 92 at the boiler 9. Therefore, the air flow containing zinc oxide particles entering the collection system can randomly float in the four parallel air distribution box groups 3, achieving a relatively balanced effect of the zinc oxide components settled in the four air distribution box groups 3, that is, conventional type I zinc oxide is produced at all four air distribution box groups 3.

[0049] Conventionally, such as Figure 8 As shown, a collection hopper 82 is provided below each of the air distribution boxes 8. Collection bag groups 81 are installed at the bottom of the air distribution boxes 8 and at corresponding locations on the front and rear parallel boxes 1 and 2. The lower ends of the collection bag groups 81 are connected to the corresponding collection hoppers 82 below. As the airflow above the collection bag groups 81 descends, it drives zinc oxide particles into each collection bag. Gas overflows through the gaps in the collection bags, and the zinc oxide particles are trapped by the collection bags, achieving the purpose of solid-gas separation. The trapped zinc oxide particles gradually settle into the collection hopper 82 below, where they are collected and discharged.

[0050] like Figure 1 and Figure 5As shown, the four air distribution box groups 3 in this system are respectively used to form a first box group 31, a second box group 32, a third box group 33 and a fourth box group 34 in series. Of course, the purpose of this sorting definition is to better illustrate the structural principle, not to limit the scope of protection.

[0051] like Figure 1 and Figure 5 As shown, a rear side partition structure 21 is fixedly provided in the rear parallel box 2 between the second box group 32 and the third box group 33. The rear side partition structure 21 directly separates the passage between the second box group 32 and the third box group 33 in the rear parallel box 2. This can quickly assist the four air distribution box groups 3 to form a series state without substantially affecting the random drifting of airflow when connected in parallel. This auxiliary function will be explained in a unified manner later and will not be repeated here. The rear side partition structure 21 can be implemented by a plate fixedly provided in the rear parallel box 2.

[0052] like Figures 1 to 7 As shown, a parallel air inlet 11 is provided on the front parallel box 1 at a position corresponding to the position between the second box group 32 and the third box group 33. The parallel air inlet 11 is used to connect to the cooling pipe 7. The placement of the parallel air inlet 11 at this position further ensures the uniformity of the zinc oxide components deposited at the four air distribution box groups 3. Of course, the parallel air inlet 11 is located on the side wall of the front parallel box 1 away from the air distribution box groups 3.

[0053] Conventionally, such as Figure 9 As shown, the cooling pipe 7 includes a cooling upstream section 71 and a cooling downstream section 72 arranged in sequence. The upper end of the cooling upstream section 71 is connected to the upper end of the downstream adjacent cooling downstream section 72, and a settling box 73 is connected between the lower end of the downstream adjacent cooling upstream section 71. The upper end of the last cooling upstream section 71 is connected to the parallel air inlet 11. The zinc oxide-containing airflow from the oxidation chamber 92 naturally dissipates heat through the longer cooling pipe 7 before ultimately reaching the collection system. During this process, some zinc oxide with large particle size and high levels of adherent impurities will first settle in the settling box 73, achieving a single-stage separation and extraction. This is also one of the well-known optimization processes for promoting the production of type I zinc oxide in the collection system.

[0054] like Figures 1 to 7As shown, a series air inlet 12 is provided on the front parallel box 1 on the side of the parallel air inlet 11 near the first box group 31. The series air inlet 12 is provided with a series air inlet duct 74 connected to the cooling duct 7. Channel opening and closing devices 4 are respectively provided in the front parallel box 1 between the first box group 31 and the second box group 32 and between the third box group 33 and the fourth box group 34. The channel opening and closing devices 4 are used to separate or open the parallel channels in the front parallel box 1. The channel opening and closing devices 4 located between the first box group 31 and the second box group 32 block the series air inlet 12 when the parallel channels are opened. An air outlet opening and closing device 5 for opening and closing the parallel air inlet 11 is installed in the front parallel box 1.

[0055] When the air inlet opening and closing device 5 opens the parallel air inlet 11 and the two channel opening and closing devices 4 open the parallel channels in the front parallel box 1, as shown in FIG. Figure 5 As shown, the four air distribution box groups 3 are connected in parallel and can be used to produce type I zinc oxide at full load. The zinc oxide indicators produced by the four air distribution box groups 3 are relatively balanced and do not require post-processing, which is beneficial to controlling the production cost and quality of type I zinc oxide and avoiding the extension of the production cycle caused by subsequent mixing treatment.

[0056] The air vent opening and closing device 5 closes the parallel air inlet 11, the two channel opening and closing devices 4 separate the parallel channels of the front parallel box 1, and after one of the channel opening and closing devices 4 opens the series air inlet 12 at the same time, the four air distribution box groups 3 form a series state of an M-shaped path; in this process, the fixed separation of the rear side partition structure 21 plays a role in assisting the formation of the series state. After the series state is formed, as shown in FIG. Figure 1 As shown, the airflow containing zinc oxide particles enters the first box group 31, the second box group 32, the third box group 33, and the fourth box group 34 in sequence from the series air inlet 12. The airflow has a long drifting distance, and at least the fourth box group 34 can produce premium-grade zinc oxide. This enables the three air distribution box groups to be switched in series and parallel, achieving the goal of balancing the temporary production of premium-grade zinc oxide with the daily full-load production of type I zinc oxide.

[0057] In the series connection state, the airflow travels a significantly longer distance, the resistance along the way increases, and the suction force of the collection bag group 81 on the oxidation chamber 92 decreases, so the airflow in the cooling pipe 7 slows down, which will lead to an increase in the amount of deposition in the oxidation chamber 92 and the deposition boxes 73 in the cooling pipe 7. The zinc oxide deposited in these places is of relatively low quality, which will reduce the output of high-quality zinc oxide in the collection system. Figure 9As shown, the series air inlet duct 74 is connected between the series air inlet 12 and the upper end of the next-to-last cooling upward section 71 in this embodiment to shorten the air flow path, ensure the air flow rate, and thus ensure the output of high-quality zinc oxide at the collection system.

[0058] Based on the above changes, the flow path of the cooling pipe 7 is reduced, and the temperature of the air flow reaching the collection system may reach a high temperature of more than 200°C. Therefore, preferably, at least the collection bag group 81 at the first box group 31 uses a collection bag made of glass fiber to avoid ablation and ensure normal filtering effect.

[0059] like Figure 10 and Figure 18 As shown, the channel opening and closing device 4 of this embodiment includes opening and closing shaft through holes 41 respectively opened on the bottom and top of the box of the front parallel box 1, and a channel opening and closing shaft 42 is installed through the opening and closing shaft through hole 41. Of course, the channel opening and closing shaft 42 is preferably located on the side of the front parallel box 1 away from the air distribution box group 3, and is preferably close to the side wall of this side. When it is not possible to completely close to the side wall of this side, a sealing strip should be added to the side wall to seal the gap between the channel opening and closing shaft 42 and the side wall. Opening and closing shaft seats 43 are respectively installed at the upper and lower ends of the channel opening and closing shaft 42 outside the front parallel box 1. The channel opening and closing shaft 42 rotates with the opening and closing shaft seat 43 to achieve the rotational installation of the channel opening and closing shaft 42. Among them, the lower side of the opening and closing shaft seat 43 is provided with an inward convex step, and the channel opening and closing shaft 42 is provided with a corresponding outward convex step to limit the height of the channel opening and closing shaft 42. This is easily obtained by those skilled in the art by combining conventional technical means, and will not be described in detail here and is not shown in the accompanying drawings. However, since the frequency of series-parallel switching operation in this embodiment is low, no bearings or other components are required between the channel opening and closing shaft 42 and the opening and closing shaft seat 43, thereby reducing oil pollution. If necessary, a sealing ring can be added to the opening and closing shaft seat 43 for sealing. The sealing ring is preferably a polytetrafluoroethylene sealing ring to also avoid impurity contamination.

[0060] like Figures 1 to 7 As shown, a channel opening and closing plate 44 is fixed on the channel opening and closing shaft 42 in the front parallel box 1. When the channel opening and closing plate 44 rotates between the first box group 31 and the second box group 32 or between the third box group 33 and the fourth box group 34, the parallel channels in the front parallel box 1 are separated. More specifically, as shown in FIG. Figure 1 and Figure 2As shown, when the free end of the channel opening and closing plate 44 abuts against the side wall of the front parallel box 1 between the first box group 31 and the second box group 32, or between the third box group 33 and the fourth box group 34, a partition is formed for the parallel channels in the front parallel box 1. The channel opening and closing plate 44 is preferably implemented by a rigid plate body and a flexible baffle disposed around the rigid plate body. This can achieve a better closed separation while reducing resistance to the rotation of the channel opening and closing plate 44, thereby promoting smooth rotation of the channel opening and closing plate 44.

[0061] Preferably, the channel opening and closing shaft 42 in the channel opening and closing device 4 between the first box group 31 and the second box group 32 is located between the series air inlet 12 and the parallel air inlet 11, as shown in FIG. Figure 4 As shown, the corresponding channel opening and closing plate 44 blocks the series air inlet 12 when it rotates to the series air inlet 12, thereby achieving the dual function of the channel opening and closing plate 44 and reducing the arrangement of structural parts.

[0062] The outer end of the channel opening and closing shaft 42 is connected to a channel opening and closing controller to control the opening and closing rotation of the channel opening and closing plate 44 .

[0063] like Figure 6 and Figure 10 As shown, in this embodiment, the channel opening and closing shaft 42 is provided with an axially extending hole for an air vent opening and closing shaft 51. The air vent opening and closing device 5 includes an air vent opening and closing shaft 51 rotatably mounted in the hole for the air vent opening and closing shaft 51. A linkage slot 52 arranged along the length direction is provided on the side wall of the channel opening and closing shaft 42 located in the front parallel box 1. An air vent opening and closing connector 53 extending from the linkage slot 52 is fixed to the air vent opening and closing shaft 51. An air vent opening and closing plate 54 is fixed to the air vent opening and closing connector 53. The air vent opening and closing plate 54 presses against the corresponding channel opening and closing plate 44 when the parallel air inlet 11 is opened. The groove edge on the linkage groove 52 close to the parallel air inlet 11 is the linkage groove edge, and the linkage groove edge is provided with a delayed linkage interval 55 between the air outlet opening and closing plate 54 and the air outlet opening and closing plate 54 when the parallel air inlet 11 is opened. When the air outlet opening and closing plate 54 closes the parallel air inlet 11, it first rotates through the delayed linkage interval 55 and then links with the channel opening and closing shaft 42 to rotate, and when the air outlet opening and closing plate 54 closes the parallel air inlet 11, the channel opening and closing plate 44 separates the parallel channels in the front parallel box 1; the air outlet opening and closing shaft 51 extends out of the channel opening and closing shaft 42 at one end and is connected to an air outlet opening and closing controller 56.

[0064] Through the above structural principle, the tuyere opening and closing device 5 also serves as the channel opening and closing controller, achieving the purpose of linking the opening and closing of the tuyere and the parallel channel with the tuyere opening and closing controller 56. This can greatly simplify the opening and closing structure layout within the front parallel box 1 and reduce the impact on channel flow. The tuyere opening and closing plate 54 is preferably implemented as a rigid plate with a flexible baffle disposed thereon. The overall plate surface area is based on the ability to cover and seal the parallel air inlet 11, and does not need to fully cover the cross-section of the front parallel box 1.

[0065] like Figure 1 and Figure 2 As shown, the air vent opening and closing plates 54 on both sides of this embodiment are used to jointly close the parallel air inlets 11. More specifically, each air vent opening and closing plate 54 only closes half of the parallel air inlets 11. As a result, this embodiment is more convenient to install in the front parallel box 1 with a smaller parallel channel cross-section. Preferably, the second box group 32 and the third box group 33 are both equipped with a single air distribution box 8, which can further reduce the distance between the distal ends of the front connection ends of the second box group 32 and the third box group 33 and the parallel air inlets 11, facilitating the smooth arrangement of the linkage opening and closing structure of this embodiment.

[0066] Preferably, if Figure 10 、 Figure 11 and Figure 18 As shown, the top of the front parallel box 1 is provided with a slotted hole 13 that communicates with the upper opening and closing shaft through-hole 41 to facilitate the installation of the channel opening and closing shaft 42 and channel opening and closing plate 44, as well as the tuyere opening and closing shaft 51 and tuyere opening and closing plate 54. This installation will be described later and will not be repeated here. Preferably, the slotted hole 13 on the front parallel box 1 is covered with a slotted hole sealing plate 14 to seal the slotted hole 13 after installation, ensuring the airtightness of the front parallel box 1.

[0067] In addition, the ambient temperature at the air distribution box 8 of the collection system is relatively high, ranging from tens to hundreds of degrees Celsius, and after the transformation, the temperature at the first box group 31 may still be around 200 degrees Celsius. Considering the low frequency of series-parallel switching operation, the air outlet opening and closing controller 56 of this embodiment does not use power such as drive cylinders and motors, but adopts a mechanical structure. Specifically, Figure 10 as well as Figures 12 to 16As shown, the tuyere opening and closing controller 56 includes an opening and closing operation connecting pin 561 radially penetrating and installed on the tuyere opening and closing shaft 51, an opening and closing operating rod 562 is installed on the opening and closing operation connecting pin 561, and a state maintaining block rod 563 for positioning and blocking the opening and closing operating rod 562 is fixedly provided on the front parallel box 1. Of course, there are two state maintaining block rods 563 corresponding to each opening and closing operating rod 562, and they respectively position and block the open and closed positions. Based on the fact that a patrol platform is provided near the upper end of the collection bag group 81 at the collection system, the opening and closing operating rod 562 in this embodiment is preferably provided on the lower end of the tuyere opening and closing shaft 51 to facilitate manual operation; correspondingly, the state maintaining block rod 563 is fixedly provided at the lower part of the front parallel box 1.

[0068] When the four air distribution box groups 3 are switched in series, the air outlet opening and closing shaft 51 is rotated in the positive direction by the opening and closing operating lever 562. Figure 7 and Figure 2 As shown in sequence, the tuyere opening and closing shaft 51 rotates through the delayed linkage interval 55 and then links with the channel opening and closing shaft 42 to rotate until the tuyere opening and closing plate 54 reaches the position of closing the parallel air inlet 11. At this time, the channel opening and closing plate 44 is in the position of separating the parallel channels in the front parallel box 1. During this process, the tuyere opening and closing shaft 51 rotates about 180 degrees and reaches the position shown in FIG. Figure 13 In the series holding position shown, the opening and closing operation lever 562 can be swung upwards based on the hinged connection of the opening and closing operation connecting pin 561. Figure 14 As shown, it is swung to the state maintaining lever 563 at this position, so that the state maintaining lever 563 blocks the air outlet opening and closing shaft 51 from rotating back, thereby achieving the positioning and holding purpose, and the four air distribution box groups 3 are kept in a series state.

[0069] On the contrary, when the four air distribution box groups 3 are switched to the parallel state, the opening and closing operating rod 562 is swung downward to leave the position of the state holding lever 563, and the air outlet opening and closing shaft 51 is rotated in the opposite direction by the opening and closing operating rod 562, as shown in FIG. Figure 3 and Figure 4 As shown in sequence, the tuyere opening and closing plate 54 rotates an angle of a delayed linkage interval 55 and then links the channel opening and closing shaft 42 to rotate until it reaches the side wall of the front parallel box 1 away from the air distribution box group 3. During this process, the tuyere opening and closing shaft 51 rotates back about 180 degrees and reaches the position shown in FIG. Figure 16 The parallel holding position shown is then maintained, and the opening and closing operating rod 562 is then swung upward to reach the state holding stop rod 563 on this side for positioning and holding, and the four wind box groups 3 are maintained in a parallel state.

[0070] Based on the above structural principles, such as Figure 15 As shown, the state maintaining lever 563 preferably has a certain elasticity and a rod structure with a holding protrusion 564 at the lower end to prevent the opening and closing operating lever 562 from falling, such as being realized by bending common Q235 round steel and other profiles.

[0071] Preferably, if Figure 10 and Figure 18 As shown, the linkage slot 52 passes through the channel opening and closing shaft 42 upward, and a limiting collar 6 sleeved on the channel opening and closing shaft 42 is rotatably installed in the upper opening and closing shaft seat 43, and a limiting block 61 located in the linkage slot 52 is fixed on the limiting collar 6, and the limiting block 61 is used to limit the upper end of the air outlet opening and closing connector 53; a collar pressure cover 62 is fixed on the top of the upper opening and closing shaft seat 43.

[0072] Based on the above structure, this embodiment also provides a modification method for the series-parallel zinc oxide collection system, which is detailed as follows.

[0073] Step 1: If Figure 17 As shown, the distance between the axis of the channel opening and closing shaft 42 and the side wall of the front parallel box 1 away from the air distribution box group 3 is determined to obtain the distance line 15 where the axis of the channel opening and closing shaft 42 is located; a line 16 is drawn between the center of the parallel air inlet 11 and the far edge of the front connection end of the second box group 32 or the third box group 33, and the intersection of the perpendicular bisector of the line 16 and the distance line 15 is the axis position of the channel opening and closing shaft 42, and the distance from the axis of the channel opening and closing shaft 42 to the center of the parallel air inlet 11 is the length of the air inlet opening and closing plate 54.

[0074] Step 2: Open the opening and closing shaft through hole 41 at the top and bottom of the front parallel box 1 corresponding to the axial position of the channel opening and closing shaft 42, and open an insertion avoidance long hole 13 at the top of the front parallel box 1 to communicate with the corresponding opening and closing shaft through hole 41.

[0075] Step 3: If Figure 18 As shown, the opening and closing shaft seat 43 on the lower side is installed, and the channel opening and closing shaft 42 is inserted downward from the opening and closing shaft through hole 41 on the upper side in a manner that the channel opening and closing plate 44 corresponds to the insertion avoidance long hole 13, and the channel opening and closing shaft 42 is highly positioned at the opening and closing shaft seat 43 on the lower side; the linkage slot 52 is made to face the insertion avoidance long hole 13, and the air outlet opening and closing shaft 51 is inserted into the channel opening and closing shaft 42 in a manner that the air outlet opening and closing plate 54 corresponds to the insertion avoidance long hole 13, and the air outlet opening and closing shaft 51 is highly positioned by the air outlet opening and closing connecting piece 53 resting against the lower side edge of the linkage slot 52.

[0076] Step 4: The limiting collar 6 and the upper opening and closing shaft seat 43 are simultaneously mounted on the upper end of the channel opening and closing shaft 42 in such a manner that the limiting block 61 corresponds to the linkage slot 52 , and the upper opening and closing shaft seat 43 is fixedly mounted on the front parallel box 1 .

[0077] Step 5: Install the collar cover 62 on the upper opening and closing shaft seat 43 to close the insertion avoidance slot 13 .

[0078] Step 6: Install the tuyere opening and closing controller 56 on the lower end of the tuyere opening and closing shaft 51 .

[0079] Among them, steps five and six are in no particular order.

[0080] The above steps are used to realize the series-parallel transformation of the existing collection system parallel air distribution box 8. If, when switching to the series state, the channel opening and closing plate 44 crosses or crosses several collection bags at the second box group 32 or the third box group 33, such as Figure 17 As shown, during the transformation process, the zinc drop openings corresponding to these collecting bags at the bottom of the front parallel box 1 should be closed, that is, these collecting bags will no longer be used, so as to ensure the quality step change of each air distribution box group 3 settling in sequence in the series state.

[0081] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A series-parallel zinc oxide collection system, comprising a front parallel box and a rear parallel box, wherein four air distribution box groups are provided between the proximal side walls of the front parallel box and the rear parallel box, each of the air distribution box groups comprising at least one air distribution box, characterized in that:

18. The heat dissipation controller of claim 17, wherein the cooling fan is mounted on a front panel and configured to connect the cooling fan to the cooling fan. The cooling fan is mounted on a front panel and configured to connect the cooling fan to the cooling fan. The cooling fan is mounted on a front panel and configured to connect the cooling fan to the cooling fan. The channel opening and closing device includes opening and closing shaft through holes respectively opened on the bottom and top of the front parallel box, a channel opening and closing shaft is installed through the opening and closing shaft through holes, and opening and closing shaft seats are respectively installed at the upper and lower ends of the channel opening and closing shaft outside the front parallel box, and the channel opening and closing shaft rotates with the opening and closing shaft seats; a channel opening and closing plate is fixed on the channel opening and closing shaft located in the front parallel box, and the channel opening and closing plate separates the parallel channels in the front parallel box when it rotates between the first box group and the second box group or between the third box group and the fourth box group; the outer end of the channel opening and closing shaft is connected to a channel opening and closing controller.

2. The series-parallel zinc oxide collection system according to claim 1, characterized in that: The channel opening and closing shaft in the channel opening and closing device located between the first box group and the second box group is located between the serial air inlets and the parallel air inlets, and the corresponding channel opening and closing plate blocks the serial air inlets when it rotates to the serial air inlets.

3. The series-parallel zinc oxide collection system according to claim 1, characterized in that: The channel opening and closing shaft is provided with an air outlet opening and closing shaft hole axially extending therethrough; the air outlet opening and closing device includes an air outlet opening and closing shaft rotatably installed in the air outlet opening and closing shaft hole, and a linkage slot arranged along the length direction is provided on the side wall of the channel opening and closing shaft located in the front parallel box, an air outlet opening and closing connecting piece extending out of the linkage slot is fixed on the air outlet opening and closing shaft, and an air outlet opening and closing plate is fixed on the air outlet opening and closing connecting piece, and the air outlet opening and closing plate is pressed against the corresponding channel opening and closing plate when the parallel air inlet is opened; the linkage slot The groove edge close to the parallel air inlets is a linkage groove edge, and a delayed linkage interval is provided between the linkage groove edge and the air outlet opening and closing plate when the air outlet opening and closing plate opens the parallel air inlets. When the air outlet opening and closing plate closes the parallel air inlets, the air outlet opening and closing plate first rotates through the delayed linkage interval and then links the channel opening and closing shaft to rotate, and when the air outlet opening and closing plate closes the parallel air inlets, the channel opening and closing plate separates the parallel channels in the front parallel box; the air outlet opening and closing shaft extends out of the channel opening and closing shaft at one end which is connected to an air outlet opening and closing controller.

4. The series-parallel zinc oxide collection system according to claim 3, characterized in that: The air vent opening and closing controller includes an opening and closing operation connecting pin radially penetrating and installed on the air vent opening and closing shaft, an opening and closing operation rod is installed on the opening and closing operation connecting pin, and a state retaining lever for positioning and holding the opening and closing operation rod is fixedly provided on the front parallel box.

5. The series-parallel zinc oxide collection system according to claim 3, characterized in that: The linkage slot passes through the channel opening and closing shaft upward, and a limiting collar mounted on the channel opening and closing shaft is rotatably installed in the upper opening and closing shaft seat, and a limiting block located in the linkage slot is fixed on the limiting collar, and the limiting block is used to limit the upper end of the air outlet opening and closing connector; a collar pressure cover is fixed on the top of the upper opening and closing shaft seat.

6. The series-parallel zinc oxide collection system according to claim 1, characterized in that: The cooling pipe includes a cooling ascending section and a cooling descending section arranged in sequence, the upper end of the cooling ascending section is connected to the upper end of the cooling descending section adjacent to the downstream, and a deposition box is connected between the lower end of the cooling descending section and the lower end of the cooling ascending section adjacent to the downstream; the upper end of the last cooling ascending section is connected to the parallel air inlet, and the series air inlet duct is connected between the series air inlet and the upper end of the second-last cooling ascending section.

7. The series-parallel zinc oxide collection system according to any one of claims 1 to 6, characterized in that: A collecting bucket is provided under each of the air distribution boxes, and a collection bag group is installed at the bottom of the air distribution box and the bottom of the corresponding positions on the front parallel box and the rear parallel box, respectively. The lower end of the collection bag group is connected to the corresponding collection bucket below.

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