Air volume self-control mechanism, dynamic oxygen distribution kiln and self-feeding calcining equipment

Abstract

The utility model provides an air volume self-control mechanism, a dynamic oxygen distribution kiln and self-feeding calcining equipment. A blast fan of the air volume self-control mechanism is arranged in a pipe cavity of an air guide pipe, the air inlet side of the blast fan faces an air inlet of the air guide pipe, and the air outlet side of the blast fan faces an air outlet of the air guide pipe. The air volume adjusting assembly is arranged in a pipe cavity of the air guide pipe. An air passing fixed disc and an air control movable disc of the air volume adjusting assembly are attached to each other, the disc edge of the air passing fixed disc is fixedly connected to the pipe cavity wall of the air guide pipe, and the disc edge of the air control movable disc is rotationally connected to the pipe cavity wall of the air guide pipe. The rotary driver is fixedly connected to the pipe cavity wall of the air guide pipe and is arranged opposite to the air control movable disc in the axial direction; a second air passing opening is formed in the air passing fixed disc, and a first air passing opening is formed in the air control movable disc; the rotating shaft of the rotating driver is connected to the center position of the air control movable disc, so that the air control movable disc rotates relative to the air passing fixed disc, the first air passing opening and the second air passing opening are oppositely arranged or arranged in a staggered mode, and the air inlet amount is adjusted more accurately and stably.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electrode material preparation, and in particular to an air volume automatic control mechanism, a dynamic oxygen distribution kiln and a self-feeding calcining device. Background Art

[0002] With the rapid development of the new energy industry, the market demand for electrode materials is also increasing. Among them, the positive electrode material of the battery is usually cobalt tetroxide, which is usually calcined by cobalt carbonate in a rotary kiln. The oxygen content in the rotary kiln directly affects the production efficiency and quality of cobalt tetroxide. For example, if the oxygen content is too high, the cobalt carbonate reacts too quickly, which can easily cause cracks on the surface of the generated cobalt tetroxide. If the oxygen content is too low, the cobalt carbonate reacts fully to generate cobalt oxide.

[0003] At present, it is usually necessary to arrange an operator to adjust the air inlet and feeding system of the rotary kiln according to the real-time sampling test results of the equipment. However, manual adjustment often leads to unstable or unqualified product quality due to untimely adjustment. In order to reduce the occurrence of the above situation, some manufacturers have made further research and development.

[0004] For example, Chinese patent document CN206377689U discloses a dynamic control system for oxygen content in boiler flue gas, comprising a burner, a boiler body, an economizer, a dust collector, an induced draft fan and a chimney connected by pipelines, an air outlet of the blower is connected to the burner by a pipeline, an air inlet pipe is arranged below the second automatic air valve, a first automatic air valve is installed on the air inlet pipe, one end of the first automatic air valve is connected to the atmosphere through the air inlet pipe, and the other end is connected to the blower through a pipeline, a zirconia probe is installed on the main pipeline connecting the economizer and the dust collector, a signal output end of the zirconia probe is connected to an oxygen analyzer through a wire, a signal output end of the oxygen analyzer is connected to a central controller through a wire, a signal output end of the central controller is connected to a damper controller through a wire, a signal output end of the damper controller is connected to a damper opening actuator through a wire, and the damper opening actuator is installed on the first automatic air valve and the second automatic air valve.

[0005] However, the design of the above boiler flue gas oxygen content dynamic control system has the following problems:

[0006] Although the above-mentioned boiler flue gas oxygen content dynamic control system can detect the oxygen content in the boiler body through the zirconium oxide probe and control the air intake of the automatic air valve in time, the automatic air valve controls the air intake by changing the flipping angle of the valve plate. When the valve plate flips, the outside air will enter from the air inlet pipe under the action of the blower. The flipping angle of the valve plate is very easy to open excessively under the push of the outside air, and it is still difficult to accurately control the air intake, which will eventually lead to poor quality stability of the product. Utility Model Content

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an air volume automatic control mechanism, a dynamic oxygen distribution kiln and a self-feeding calcining equipment with stable structure and precise air volume control.

[0008] The purpose of this disclosure is achieved through the following technical solutions:

[0009] An air volume automatic control mechanism comprises an air guide pipe and an air blowing fan;

[0010] The blower fan is arranged in the tube cavity of the air duct, the air inlet side of the blower fan faces the air inlet of the air duct, and the air outlet side of the blower fan faces the air outlet of the air duct;

[0011] The air volume automatic control mechanism further includes an air volume regulating component, and the air volume regulating component is arranged in the tube cavity of the air guide pipe;

[0012] The air volume adjustment assembly includes an air flow fixed plate, an air control movable plate and a rotary driver; the air flow fixed plate and the air control movable plate fit each other and are arranged close to the air outlet of the air duct; the edge of the air flow fixed plate is fixedly connected to the tube cavity wall of the air duct, and the edge of the air control movable plate is rotatably connected to the tube cavity wall of the air duct; the rotary driver is fixedly connected to the tube cavity wall of the air duct and is axially arranged opposite to the air control movable plate;

[0013] The wind control movable disk is provided with a first air outlet, and the wind passing fixed disk is provided with a second air outlet; the rotating shaft of the rotating driver is connected to the center position of the wind control movable disk; the wind control movable disk rotates relative to the wind passing fixed disk so that the first air outlet and the second air outlet are arranged opposite to each other or staggered.

[0014] In one embodiment, there are multiple second air outlets, and multiple second air outlets are opened around the center of the air outlet fixed disk; there are multiple first air outlets, and multiple first air outlets are opened around the center of the wind control disk, and a blocking piece is formed between two adjacent first air outlets; each of the first air outlets is connected to the corresponding second air outlet, or each of the blocking pieces blocks the corresponding second air outlet.

[0015] In one of the embodiments, the disk edge of the wind control disk and the tube cavity wall of the air duct are connected via a sealing bearing; the inner ring of the sealing bearing is fixedly connected to the disk edge of the wind control disk, and the outer ring of the sealing bearing is fixedly connected to the tube cavity wall of the air duct.

[0016] In one of the embodiments, a breathable and water-absorbent spacer is further provided in the tube cavity of the air duct; the breathable and water-absorbent spacer is provided between the blower fan and the air volume regulating component, and the edge of the breathable and water-absorbent spacer is connected to the tube cavity wall of the air duct.

[0017] In one of the embodiments, a dust-blocking screen is provided at the air inlet of the air duct, and an edge of the dust-blocking screen is connected to the end face of the air inlet of the air duct.

[0018] A dynamic oxygen distribution kiln, comprising a hot kiln, a plurality of heating rings, an oxygen quantity detector and an air volume automatic control mechanism as claimed in any one of claims 1 to 4;

[0019] A plurality of the heating sleeve rings are respectively sleeved outside the hot kiln and are spaced apart along the length direction of the hot kiln; the oxygen detector and the air volume automatic control mechanism are respectively installed on the hot kiln, the detection end of the oxygen detector is arranged in the hot kiln, and the air outlet of the air duct is connected to the air inlet of the hot kiln; the oxygen detector is respectively electrically connected to the blower fan and the rotary driver.

[0020] In one of the embodiments, a temperature rising zone and a high temperature zone are provided outside the hot kiln; the temperature rising zone is close to the feed end of the hot kiln, and the high temperature zone is close to the discharge end of the hot kiln; a plurality of the heating rings are divided into a plurality of temperature rising rings and a plurality of high temperature rings, a plurality of the temperature rising rings are arranged at intervals in the temperature rising zone, and a plurality of the high temperature rings are arranged at intervals in the high temperature zone; the oxygen detector is located in the high temperature zone.

[0021] A self-feeding calcining device, comprising a feeding device and a dynamic oxygen distribution kiln as claimed in any one of claims 1 to 4;

[0022] The feeding device includes a silo and a material quantity control valve; the material quantity control valve is arranged at the discharge port of the silo, the discharge port of the silo is connected to the feed end of the material quantity control valve, and the discharge end of the material quantity control valve is connected to the end of the feed end of the hot kiln; the feeding motor of the material quantity control valve is electrically connected to the oxygen detector.

[0023] In one embodiment, the self-feeding calcining equipment further includes a dust collector and an induced draft fan;

[0024] The air outlet of the hot kiln is connected to the air inlet of the dust collector, the air outlet of the dust collector is connected to the air inlet of the induced draft fan, and the dust exhaust port of the dust collector is connected to the feed port of the silo.

[0025] In one of the embodiments, the self-feeding calcining equipment further comprises a cooling device;

[0026] The cold material device includes a cold kiln, a refrigeration sleeve and a condensate circulation mechanism; the feed end of the cold kiln is connected to the discharge end of the hot kiln, and the cold kiln is arranged in the inner cylinder of the refrigeration sleeve; a water inlet is provided at the top of the inner cylinder wall of the refrigeration sleeve, and the water inlet is connected to the condensate outlet of the condensate circulation mechanism; a water outlet is provided at the bottom of the inner cylinder wall of the refrigeration sleeve, and the water outlet is connected to the condensate inlet of the condensate circulation mechanism.

[0027] Compared with the prior art, the present invention has at least the following advantages:

[0028] 1) By making the air inlet side of the blower fan face the air inlet of the air guide duct, and making the air outlet side of the blower fan face the air outlet of the air guide duct, when the blower fan is started, air can quickly flow from the air inlet of the air guide duct to the air outlet of the air guide duct. Since the air flow fixed plate and the air control movable plate are arranged close to the air outlet of the air guide duct, the air flow fixed plate and the air control movable plate are coaxially fitted, and the rotating shaft of the rotating driver is connected to the center position of the air control movable plate, when the air intake volume needs to be adjusted, the rotating driver can drive the air control movable plate to rotate through the rotating shaft, so that the second air outlet of the air flow fixed plate and the first air outlet of the air control movable plate can gradually become opposite and connected, or gradually staggered and close the air outlet of the air guide duct, thereby finally realizing automatic adjustment of the air intake volume.

[0029] 2) Compared with the dynamic control system of oxygen content in boiler flue gas in the prior art, the air volume automatic control mechanism disclosed in the present invention rotates the air control movable disk relative to the air flow fixed disk so that the second air flow outlet and the first air flow outlet can gradually become relative to each other. When the air is discharged from the air outlet of the air duct through the second air flow outlet and the first air flow outlet in sequence, since the air flow fixed disk and the air control movable disk fit each other, the disk edges of the air flow fixed disk and the air control movable disk are both connected to the pipe cavity of the air duct, the air flow fixed disk and the air control movable disk will fit tightly under the push of external air, so that the friction between the air flow fixed disk and the air control movable disk increases and the relative position of the second air flow outlet and the first air flow outlet is further stabilized, so that the air volume automatic control mechanism disclosed in the present invention is less susceptible to interference from external air, and ultimately a more precise and stable adjustment of the air intake volume is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a structural schematic diagram of an air volume automatic control mechanism according to an embodiment of the present disclosure;

[0032] Figure 2 for Figure 1 A longitudinal sectional view of the air volume automatic control mechanism shown;

[0033] Figure 3 for Figure 2 A transverse cross-sectional view of the air volume automatic control mechanism at A1-A2 shown;

[0034] Figure 4 It is a structural schematic diagram of a dynamic oxygen distribution kiln according to another embodiment of the present disclosure;

[0035] Figure 5 It is a schematic structural diagram of a self-feeding calcining device according to another embodiment of the present disclosure.

[0036] Reference numerals: 10, self-feeding calcining equipment; 100, dynamic oxygen distribution kiln; 110, air volume automatic control mechanism; 1110, air guide pipe; 1120, blast fan; 1130, air volume adjustment component; 1131, air flow fixed plate; 113a, second air flow outlet; 1132, air control dynamic plate; 113b, first air flow outlet; 113d, blocking plate; 1133, rotating driver; 113c, rotating shaft; 1140, sealing bearing; 1150, air permeable and water-absorbing spacer; 1160, dust-blocking screen; 120, hot kiln; 130, Heating collar; 1310, heating collar; 131a, heating zone; 1320, high temperature collar; 132a, high temperature zone; 140, oxygen detector; 200, feeding device; 210, silo; 220, material quantity control valve; 2210, feeding motor; 300, dust collector; 400, induced draft fan; 500, cooling device; 510, cooling kiln; 520, refrigeration sleeve; 5210, water inlet; 5220, water outlet; 530, condensate circulation mechanism; 5310, condensate outlet; 5320, condensate inlet. DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0038] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0041] like Figure 1 and Figure 2 As shown, an automatic air volume control mechanism 110 of an embodiment includes an air duct 1110, an air blower fan 1120 and an air volume adjustment component 1130; the air blower fan 1120 is arranged in the tube cavity of the air duct 1110, the air inlet side of the air blower fan 1120 faces the air inlet of the air duct 1110, and the air outlet side of the air blower fan 1120 faces the air outlet of the air duct 1110; the air volume adjustment component 1130 is arranged in the tube cavity of the air duct 1110; the air volume adjustment component 1130 includes an air flow fixed plate 1131, an air control movable plate 1132 and a rotating driver 1133; the air flow fixed plate 1131 and the air control movable plate 1132 are fitted to each other and are arranged close to the air outlet of the air duct 1110; The edge of the wind plate 1131 is fixedly connected to the tube wall of the air duct 1110, and the edge of the wind control movable plate 1132 is rotatably connected to the tube wall of the air duct 1110; the rotary driver 1133 is fixedly connected to the tube wall of the air duct 1110, and is axially arranged opposite to the wind control movable plate 1132; a second air outlet 113a is provided on the wind plate 1131, and a first air outlet 113b is provided on the wind control movable plate 1132; a rotating shaft 113c of the rotary driver 1133 is connected to the center position of the wind control movable plate 1132; the wind control movable plate 1132 rotates relative to the wind plate 1131, so that the first air outlet 113b and the second air outlet 113a are arranged opposite to or staggered.

[0042] It can be understood that by making the air inlet side of the blower fan 1120 face the air inlet of the air guide 1110, and making the air outlet side of the blower fan 1120 face the air outlet of the air guide 1110, when the blower fan 1120 is started, air can flow quickly from the air inlet of the air guide 1110 to the air outlet of the air guide 1110. Since the air flow fixed plate 1131 and the air control movable plate 1132 are arranged close to the air outlet of the air guide 1110, the air flow fixed plate 1131 and the air control movable plate 1132 are coaxially attached to each other. The rotating shaft 113c of the rotating driver 1133 is connected to the center position of the wind control disk 1132, so that when the air intake volume needs to be adjusted, the rotating driver 1133 can drive the wind control disk 1132 to rotate through the rotating shaft 113c, so that the second air outlet 113a of the air passing plate 1131 and the first air outlet 113b of the wind control disk 1132 can gradually become relative and connected or gradually staggered to close the air outlet of the air guide 1110, ultimately realizing automatic adjustment of the air intake volume.

[0043] It can be understood that compared with the boiler flue gas oxygen content dynamic control system of the prior art, the air volume automatic control mechanism 110 of this embodiment, by rotating the air control disk 1132 relative to the air flow fixed disk 1131, makes the second air flow opening 113a and the first air flow opening 113b gradually relative to each other. When the air is discharged from the air outlet of the air guide 1110 through the second air flow opening 113a and the first air flow opening 113b in sequence, the air flow fixed disk 1131 and the air control disk 1132 are in contact with each other, and the air flow fixed disk 1131 is in contact with the air flow fixed disk 1131. The disk edge of 131 and the disk edge of the wind control movable disk 1132 are both connected to the tube cavity of the air guide 1110. The air flow fixed disk 1131 and the wind control movable disk 1132 are pushed by the outside air to fit tightly, so that the friction between the air flow fixed disk 1131 and the wind control movable disk 1132 increases and further stabilizes the relative position of the second air outlet 113a and the first air outlet 113b, making the air volume automatic control mechanism 110 of this embodiment less susceptible to interference from the outside air, and finally achieving a more accurate and stable adjustment of the air intake volume.

[0044] Combination Figure 1As shown, in the present embodiment, there are multiple second air outlets 113a, and the multiple second air outlets 113a are opened around the center position of the air outlet fixed disk 1131; there are multiple first air outlets 113b, and the multiple first air outlets 113b are opened around the center position of the wind control disk 1132, and a blocking piece 113d is formed between two adjacent first air outlets 113b; each first air outlet 113b is connected to the corresponding second air outlet 113a, or each blocking piece 113d blocks the corresponding second air outlet 113a. It can be understood that since multiple second air outlets 113a are opened around the center position of the air outlet plate 1131, and multiple first air outlets 113b are opened around the center position of the wind control disk 1132, when the air intake volume needs to be increased, the rotary driver 1133 drives the wind control disk 1132 to rotate relative to the air outlet plate 1131, so that each first air outlet 113b is gradually connected with the corresponding second air outlet 113a, and the air can be discharged from the air outlet of the air duct 1110 more evenly and smoothly through each first air outlet 113b and the corresponding second air outlet 113a in turn. Since the blocking piece 113d is formed between two adjacent first air outlets 113b, when the air intake needs to be reduced, the rotary driver 1133 drives the wind control disk 1132 to rotate relative to the air flow fixed disk 1131, so that each first air outlet 113b is gradually staggered with the corresponding second air outlet 113a, and each blocking piece 113d gradually blocks the corresponding second air outlet 113a, so that the air outlet of the air duct 1110 is completely blocked, which can quickly prevent air from being discharged.

[0045] Combination Figure 1 As shown, further, a breathable and water-absorbing spacer 1150 is also provided in the tube cavity of the air duct 1110; the breathable and water-absorbing spacer 1150 is provided between the blower fan 1120 and the air volume adjustment component 1130, and the edge of the breathable and water-absorbing spacer 1150 is connected to the tube cavity wall of the air duct 1110. It can be understood that the breathable and water-absorbing spacer 1150 can absorb moisture in the air to prevent excessive air humidity from reducing subsequent calcination efficiency. Specifically, the breathable and water-absorbing spacer 1150 can be a water-absorbing sponge, etc., which is not limited here.

[0046] Combination Figure 1 As shown, in another embodiment, a dust-blocking screen 1160 is provided at the air inlet of the air duct 1110, and the edge of the dust-blocking screen 1160 is connected to the end face of the air inlet of the air duct 1110. It can be understood that by connecting the edge of the dust-blocking screen 1160 to the end face of the air inlet of the air duct 1110, the dust-blocking screen 1160 can securely cover the air inlet of the air duct 1110 to prevent solid impurities in the air from entering.

[0047] Combination Figure 2 and Figure 3As shown, in another embodiment, the edge of the wind control disk 1132 is connected to the tube cavity wall of the air duct 1110 through a sealing bearing 1140; the inner ring of the sealing bearing 1140 is fixedly connected to the edge of the wind control disk 1132, and the outer ring of the sealing bearing 1140 is fixedly connected to the tube cavity wall of the air duct 1110. It can be understood that by fixing the inner ring of the sealing bearing 1140 to the edge of the wind control disk 1132 and fixing the outer ring of the sealing bearing 1140 to the tube cavity wall of the air duct 1110, not only can the wind control disk 1132 maintain a seal with the tube cavity wall of the air duct 1110, but also can smoothly rotate the wind control disk 1132 in the tube cavity of the air duct 1110. Among them, the sealing bearing 1140 can be a ball bearing, etc., which is not limited here.

[0048] Combination Figure 4 As shown, the present disclosure also provides a dynamic oxygen distribution kiln 100, including a hot kiln 120, a plurality of heating rings 130, an oxygen quantity detector 140 and an air volume automatic control mechanism 110 of any of the above-mentioned embodiments; the plurality of heating rings 130 are respectively sleeved outside the hot kiln 120 and are arranged at intervals along the length direction of the hot kiln 120; the oxygen quantity detector 140 and the air volume automatic control mechanism 110 are respectively installed on the hot kiln 120, the detection end of the oxygen quantity detector 140 is arranged in the hot kiln 120, and the air outlet of the air guide 1110 is connected to the air inlet of the hot kiln 120; the oxygen quantity detector 140 is respectively electrically connected to the blower fan 1120 and the rotation driver 1133.

[0049] It can be understood that by connecting the air outlet of the air duct 1110 to the air inlet of the hot kiln 120, the detection end of the oxygen detector 140 is arranged in the hot kiln 120, because the oxygen detector 140 is electrically connected to the rotary driver 1133, when the detection end of the oxygen detector 140 detects that the oxygen content in the hot kiln 120 is lower than a predetermined value, the oxygen detector 140 sends a signal to increase the rotation speed of the blower fan 1120, and the rotary driver 1133 drives the wind control disk 1132 to rotate, so that the first air outlet 113b is connected to the second air outlet 113a, and the air can be heated. The oxygen quickly enters the hot kiln 120 from the air inlet of the hot kiln 120 through the first air port 113b, the second air port 113a and the air outlet of the air guide 1110. When the detection end of the oxygen detector 140 detects that the oxygen content in the hot kiln 120 is higher than the predetermined value, the oxygen detector 140 sends a signal to reduce the speed of the blower fan 1120, and the rotary driver 1133 drives the wind control disk 1132 to rotate, so that the first air port 113b and the second air port 113a are gradually staggered, the air intake is reduced, and finally the oxygen content of the hot kiln 120 is dynamically adjusted. Because a plurality of heating sleeves 130 are sleeved outside the hot kiln 120 at intervals, when the oxygen content of the hot kiln 120 is within the predetermined value, the materials in the hot kiln 120 can be uniformly heated and calcined through the heating sleeves 130. The predetermined value of the oxygen content can be in the range of 0 to 25%, which is not limited here.

[0050] Combination Figure 4As shown, in this embodiment, a temperature rising zone 131a and a high temperature zone 132a are provided outside the hot kiln 120; the temperature rising zone 131a is close to the feeding end of the hot kiln 120, and the high temperature zone 132a is close to the discharging end of the hot kiln 120; the plurality of heating rings 130 are divided into a plurality of temperature rising rings 1310 and a plurality of high temperature rings 1320, the plurality of temperature rising rings 1310 are arranged at intervals in the temperature rising zone 131a, and the plurality of high temperature rings 1320 are arranged at intervals in the high temperature zone 132a; the oxygen detector 140 is located in the high temperature zone 132a. It can be understood that by arranging the temperature rising zone 131a close to the feed end of the hot kiln 120 and arranging a plurality of temperature rising rings 1310 at intervals in the temperature rising zone 131a, the temperature range of the temperature rising rings 1310 is (150-650) ±30°C, which can preheat the material entering from the feed end of the hot kiln 120 to avoid cracking due to excessive temperature rise. At the same time, by setting the high temperature zone 132a close to the discharge end of the hot kiln 120 and arranging a plurality of high temperature rings 1320 at intervals in the high temperature zone 132a, the temperature range of the high temperature rings 1320 is 800±30°C, and the material can react better with oxygen when entering the discharge end of the hot kiln 120 after preheating. At the same time, since the oxygen detector 140 is located in the high temperature zone 132a, the oxygen detector 140 can more accurately detect the oxygen content at the discharge end of the hot kiln 120, so that the air volume automatic control mechanism 110 can supply oxygen to the hot kiln 120 in a timely manner, ensuring that the material can react with oxygen continuously and fully.

[0051] Combination Figure 5 As shown, the present disclosure further provides a self-feeding calcining equipment 10, including a feeding device 200 and a dynamic oxygen distribution kiln 100 of any of the above-mentioned embodiments; the feeding device 200 includes a silo 210 and a material quantity control valve 220; the material quantity control valve 220 is arranged at the discharge port of the silo 210, the discharge port of the silo 210 is connected to the feed end of the material quantity control valve 220, and the discharge end of the material quantity control valve 220 is connected to the end of the feed end of the hot kiln 120; the feeding motor 2210 of the material quantity control valve 220 is electrically connected to the oxygen quantity detector 140. It can be understood that by connecting the discharge port of the silo 210 to the feed end of the material quantity control valve 220, and the discharge end of the material quantity control valve 220 to the end of the feed end of the hot kiln 120, because the oxygen detector 140 is electrically connected to the feeding motor 2210 of the material quantity control valve 220, when the detection end of the oxygen detector 140 detects that the oxygen content in the hot kiln 120 is lower than a predetermined value, the oxygen detector 140 sends a signal to increase the speed of the feeding motor 2210, so that the material is accelerated to enter the hot kiln 120 to fully react with oxygen, and when the detection end of the oxygen detector 140 detects that the oxygen content in the hot kiln 120 is higher than a predetermined value, the oxygen detector 140 sends a signal to reduce the speed of the feeding motor 2210, thereby slowing down the speed at which the material enters the hot kiln 120, avoiding excessive material from entering and aggravating insufficient reaction with oxygen.

[0052] Combination Figure 5 As shown, in this embodiment, the self-feeding calcining equipment 10 further includes a dust collector 300 and an induced draft fan 400; the air outlet of the hot kiln 120 is connected to the air inlet of the dust collector 300, the air outlet of the dust collector 300 is connected to the air inlet of the induced draft fan 400, and the dust exhaust port of the dust collector 300 is connected to the feed port of the silo 210. It can be understood that by connecting the air outlet of the hot kiln 120 to the air inlet of the dust collector 300 and connecting the air outlet of the dust collector 300 to the air inlet of the induced draft fan 400, the interior of the dust collector 300 generates a negative pressure under the suction action of the induced draft fan 400, and the carbon dioxide and part of the material dust generated by the calcined material in the hot kiln 120 enter the interior of the dust collector 300 under the action of the negative pressure, so that the carbon dioxide in the hot kiln 120 is discharged in time to increase the oxygen content in the hot kiln 120 and accelerate the material reaction. By connecting the dust exhaust port of the dust collector 300 to the feed port of the silo 210, the material dust can re-enter the silo 210 through the feed port of the silo 210, thereby reducing material loss.

[0053] Combination Figure 5 As shown, further, the self-feeding calcining equipment 10 also includes a cold material device 500; the cold material device 500 includes a cold kiln 510, a refrigeration sleeve 520 and a condensed water circulation mechanism 530; the feed end of the cold kiln 510 is connected to the discharge end of the hot kiln 120, and the cold kiln 510 is arranged in the inner cylinder of the refrigeration sleeve 520; a water inlet 5210 is opened at the top of the inner cylinder wall of the refrigeration sleeve 520, and the water inlet 5210 is connected to the condensed water outlet 5310 of the condensed water circulation mechanism 530; a water outlet 5220 is opened at the bottom of the inner cylinder wall of the refrigeration sleeve 520, and the water outlet 5220 is connected to the condensed water inlet 5320 of the condensed water circulation mechanism 530. It can be understood that because the feed end of the cold kiln 510 is connected to the discharge end of the hot kiln 120, the calcined material in the hot kiln 120 can enter the cold kiln 510. By setting the refrigeration sleeve 520 in the middle of the cold kiln 510, since the condensate outlet 5310 of the condensate circulation mechanism 530 is connected to the water inlet 5210 at the top of the inner cylinder wall of the refrigeration sleeve 520, the condensate in the condensate circulation mechanism 530 can enter the inner cylinder of the refrigeration sleeve 520 to cool the material in the cold kiln 510. At the same time, the condensate in the inner cylinder of the refrigeration sleeve 520 can flow back to the condensate circulation mechanism 530 through the water outlet 5220 at the bottom of the inner cylinder wall of the refrigeration sleeve 520, so that the condensate can circulate and cool the material in the cold kiln 510.

[0054] In one embodiment, for better understanding, the process of calcining cobalt carbonate in the dynamic oxygen distribution kiln 100 of the above embodiment is described as follows:

[0055] During operation, the cobalt carbonate in the silo 210 first enters the material quantity control valve 220, the feeding motor 2210 of the material quantity control valve 220 is started and rotated at a frequency of 30 Hz, and the cobalt carbonate enters the hot kiln 120 from the material quantity control valve 220, and the cobalt carbonate is first preheated in the temperature rising zone 131a, and then enters the high temperature zone 132a for calcination. When the oxygen detector 140 detects that the oxygen content in the high temperature zone 132a of the hot kiln 120 is lower than 19.8%, the oxygen detector 140 sends a signal to reduce the speed of the feeding motor 2210 to 15 Hz, increase the speed of the blast fan 1120 to 20 Hz, and make the rotary driver 1133 drive the wind control disc 1132 to rotate, so that the outside air can accelerate through the guide The air duct 1110 enters into the hot kiln 120 to increase the oxygen content in the hot kiln 120. When the oxygen detector 140 detects that the oxygen content in the high temperature zone 132a of the hot kiln 120 is higher than 20.2%, the oxygen detector 140 sends a signal to increase the speed of the feeding motor 2210 to 30Hz, reduce the speed of the blower fan 1120 to 5Hz, and drive the rotary driver 1133 to drive the wind control disk 1132 to rotate, which can slow down the speed of the outside air entering the hot kiln 120 through the air duct 1110, thereby making the content in the hot kiln 120 accurately maintained in the range of 19.8%-20.2%, the cobalt tetroxide production efficiency is increased by nearly 20%, and the cobalt tetroxide conversion rate is increased by nearly 10%.

[0056] Compared with the prior art, the present invention has at least the following advantages:

[0057] 1) By making the air inlet side of the blower fan 1120 face the air inlet of the air guide 1110, and making the air outlet side of the blower fan 1120 face the air outlet of the air guide 1110, when the blower fan 1120 is started, air can flow quickly from the air inlet of the air guide 1110 to the air outlet of the air guide 1110. Since the air passing plate 1131 and the air control plate 1132 are arranged close to the air outlet of the air guide 1110, the air passing plate 1131 and the air control plate 1132 are coaxially fitted. The rotating shaft 113c of the rotating driver 1133 is connected to the center position of the wind control disk 1132, so that when the air intake volume needs to be adjusted, the rotating driver 1133 can drive the wind control disk 1132 to rotate through the rotating shaft 113c, so that the second air outlet 113a of the air passing plate 1131 and the first air outlet 113b of the wind control disk 1132 can gradually become relative and connected or gradually staggered to close the air outlet of the air guide 1110, ultimately realizing automatic adjustment of the air intake volume.

[0058] 2) Compared with the boiler flue gas oxygen content dynamic control system in the prior art, the air volume automatic control mechanism 110 disclosed in the present invention rotates the air control movable disc 1132 relative to the air flow fixed disc 1131, so that the second air flow opening 113a and the first air flow opening 113b can gradually move relative to each other. When the air passes through the second air flow opening 113a and the first air flow opening 113b in sequence and is discharged from the air outlet of the air guide 1110, the air flow fixed disc 1131 and the air control movable disc 1132 fit each other, and the air flow fixed disc 1131 and the air flow fixed disc 1132 are in contact with each other. The disk edge of 31 and the disk edge of the wind control movable disk 1132 are both connected to the tube cavity of the air guide 1110, and the air flow fixed disk 1131 and the wind control movable disk 1132 are pushed by the outside air to fit tightly, so that the friction between the air flow fixed disk 1131 and the wind control movable disk 1132 is increased and the relative position of the second air outlet 113a and the first air outlet 113b is further stabilized, so that the air volume automatic control mechanism 110 disclosed in the present invention is less likely to be disturbed by the outside air, and finally a more accurate and stable adjustment of the air intake volume is achieved.

[0059] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. An air volume automatic control mechanism (110), comprising an air guide duct (1110) and an air blowing fan (1120); The air-blowing fan (1120) is arranged in the tube cavity of the air duct (1110), the air inlet side of the air-blowing fan (1120) faces the air inlet of the air duct (1110), and the air outlet side of the air-blowing fan (1120) faces the air outlet of the air duct (1110); It is characterized in that The air volume automatic control mechanism (110) further comprises an air volume adjustment component (1130), wherein the air volume adjustment component (1130) is arranged in the tube cavity of the air guide tube (1110); The air volume adjustment component (1130) comprises an air flow fixed disk (1131), an air control disk (1132) and a rotary driver (1133); the air flow fixed disk (1131) and the air control disk (1132) are fitted together and arranged close to the air outlet of the air guide duct (1110); the disk edge of the air flow fixed disk (1131) is fixedly connected to the tube cavity wall of the air guide duct (1110), and the disk edge of the air control disk (1132) is rotatably connected to the tube cavity wall of the air guide duct (1110); the rotary driver (1133) is fixedly connected to the tube cavity wall of the air guide duct (1110), and is axially arranged opposite to the air control disk (1132); The wind control disk (1132) is provided with a first air outlet (113b), and the air outlet fixed disk (1131) is provided with a second air outlet (113a); the rotating shaft (113c) of the rotating driver (1133) is connected to the center position of the wind control disk (1132); the wind control disk (1132) rotates relative to the air outlet fixed disk (1131) so that the first air outlet (113b) and the second air outlet (113a) are arranged opposite to each other or staggered.

2. The air volume automatic control mechanism (110) according to claim 1, characterized in that: There are multiple second air outlets (113a), and multiple second air outlets (113a) are opened around the center position of the air outlet fixed disk (1131); there are multiple first air outlets (113b), and multiple first air outlets (113b) are opened around the center position of the wind control disk (1132), and a blocking piece (113d) is formed between two adjacent first air outlets (113b); each of the first air outlets (113b) is connected to the corresponding second air outlet (113a), or each of the blocking pieces (113d) blocks the corresponding second air outlet (113a).

3. The air volume automatic control mechanism (110) according to claim 1, characterized in that: The disk edge of the wind control disk (1132) and the tube cavity wall of the air guide tube (1110) are connected via a sealing bearing (1140); the inner ring of the sealing bearing (1140) is fixedly connected to the disk edge of the wind control disk (1132), and the outer ring of the sealing bearing (1140) is fixedly connected to the tube cavity wall of the air guide tube (1110).

4. The air volume automatic control mechanism (110) according to claim 1, characterized in that: A breathable and water-absorbent spacer (1150) is also provided in the tube cavity of the air duct (1110); the breathable and water-absorbent spacer (1150) is provided between the blower fan (1120) and the air volume adjustment component (1130), and the edge of the breathable and water-absorbent spacer (1150) is connected to the tube cavity wall of the air duct (1110).

5. The air volume automatic control mechanism (110) according to claim 1, characterized in that: A dust-blocking screen (1160) is provided at the air inlet of the air guide duct (1110), and the edge of the dust-blocking screen (1160) is connected to the end face of the air inlet of the air guide duct (1110).

6. A dynamic oxygen distribution kiln (100), characterized in that: It comprises a hot kiln (120), a plurality of heating rings (130), an oxygen detector (140) and an air volume automatic control mechanism (110) according to any one of claims 1 to 5; A plurality of heating sleeve rings (130) are respectively sleeved outside the hot kiln (120) and are arranged at intervals along the length direction of the hot kiln (120); the oxygen detector (140) and the air volume automatic control mechanism (110) are respectively installed on the hot kiln (120), the detection end of the oxygen detector (140) is arranged in the hot kiln (120), and the air outlet of the air guide pipe (1110) is connected to the air inlet of the hot kiln (120); the oxygen detector (140) is respectively electrically connected to the blower fan (1120) and the rotation driver (1133).

7. The dynamic oxygen distribution kiln (100) according to claim 6, characterized in that: The hot kiln (120) is also provided with a temperature rising zone (131a) and a high temperature zone (132a) spaced apart from each other; the temperature rising zone (131a) is close to the feeding end of the hot kiln (120), and the high temperature zone (132a) is close to the discharging end of the hot kiln (120); the plurality of heating rings (130) are divided into a plurality of temperature rising rings (1310) and a plurality of high temperature rings (1320); the plurality of temperature rising rings (1310) are spaced apart in the temperature rising zone (131a), and the plurality of high temperature rings (1320) are spaced apart in the high temperature zone (132a); the oxygen detector (140) is located in the high temperature zone (132a).

8. A self-feeding calcining device (10), characterized in that: A dynamic oxygen distribution kiln (100) comprising a feeding device (200) and any one of claims 6 to 7; The feeding device (200) comprises a material bin (210) and a material quantity control valve (220); the material quantity control valve (220) is arranged at the material outlet of the material bin (210), the material outlet of the material bin (210) is connected to the material feed end of the material quantity control valve (220), and the material discharge end of the material quantity control valve (220) is connected to the end of the material feed end of the hot kiln (120); the feeding motor (2210) of the material quantity control valve (220) is electrically connected to the oxygen detector (140).

9. The self-feeding calcining device (10) according to claim 8, characterized in that: The self-feeding calcining equipment (10) further includes a dust collector (300) and an induced draft fan (400); The air outlet of the hot kiln (120) is connected to the air inlet of the dust collector (300), the air outlet of the dust collector (300) is connected to the air inlet of the induced draft fan (400), and the dust exhaust port of the dust collector (300) is connected to the feed port of the silo (210).

10. The self-feeding calcining device (10) according to claim 8, characterized in that: The self-feeding calcining equipment (10) further comprises a cooling device (500); The cold material device (500) comprises a cold kiln (510), a refrigeration sleeve (520) and a condensate circulation mechanism (530); the feed end of the cold kiln (510) is connected to the discharge end of the hot kiln (120), and the cold kiln (510) is arranged in the inner cylinder of the refrigeration sleeve (520); a water inlet (5210) is provided at the top of the inner cylinder wall of the refrigeration sleeve (520), and the water inlet (5210) is connected to the condensate outlet (5310) of the condensate circulation mechanism (530); a water outlet (5220) is provided at the bottom of the inner cylinder wall of the refrigeration sleeve (520), and the water outlet (5220) is connected to the condensate inlet (5320) of the condensate circulation mechanism (530).

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