A conveying device for producing zinc oxide to prevent overflow

Abstract

The present invention relates to the field of pneumatic conveying technology, specifically to a conveying device for the production of secondary zinc oxide that prevents overflow, including a circular mixing tank, two sides of the circular mixing tank are respectively connected to a conveying pipe, and the ends of the two conveying pipes away from the circular mixing tank are respectively provided with a first air inlet mechanism for conveying external air into the conveying pipe, and the two conveying pipes are respectively installed with a vertically distributed discharge tank whose bottom corresponds to the discharge pipe, and a shaft extending along its axis is rotatably installed in the discharge tank. Under the action of centrifugal force, the present invention can throw the powder that falls into the temporary storage tank out from the throwing outlet, and impact on the inner edge wall of the annular impact plate, thereby breaking up the agglomerated and accumulated powder, and avoiding agglomeration causing pipeline blockage. In addition, the powder monomers that are impacted and scattered have a small density and can be suspended in the air in stages, prolonging the contact time with the airflow, increasing the action time of wind force on the powder, thereby improving the conveying effect of wind force on the powder.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic conveying, in particular to a conveying device for producing zinc oxide and preventing overflow. Background Art

[0002] Zinc oxide is a white or light yellow powder crystal composed of oxygen and zinc elements. It exists in nature in the form of mineral zinc ore and can also be prepared by chemical synthesis. Zinc oxide has many uses in industry, including as an additive for rubber, plastic, coating, cosmetics and other products, as well as for optical materials, electronic materials, etc. It has excellent optical, electrical and thermal properties and is widely used in different fields.

[0003] In the production process, zinc oxide is mainly transported through conveying pipes and pneumatic conveying. Due to the electrostatic attraction between zinc oxide powder particles or the influence of environmental humidity and other factors, agglomeration occurs. Agglomerated zinc oxide will cause blockage or poor operation of the conveying pipe during pneumatic conveying, thereby affecting the conveying efficiency.

[0004] In addition, in the production process of zinc oxide, in order to change the properties of zinc oxide or improve its performance in specific applications, it is sometimes necessary to mix zinc oxide with other powders for processing. For example, mixing zinc oxide with silica gel powder can improve the wear resistance and aging resistance of rubber products, mixing zinc oxide with titanium dioxide can improve the whiteness and gloss of coatings and plastic products, and mixing zinc oxide with carbon black can improve the conductivity and wear resistance. When zinc oxide is mixed with other powders, it is necessary to use a conveying device to convey the processed zinc oxide and other powders to the mixing equipment for mixing. After the mixing is completed, it is necessary to use a conveying device to continue to convey the mixed powder to the next production process. The mixing and conveying production line is long, which increases the processing time and reduces production efficiency. In addition, special mixing equipment is required, which increases the investment in equipment costs. Summary of the invention

[0005] The object of the present invention is to provide a conveying device for zinc oxide production which is anti-blocking and has a powder mixing function and can prevent overflow, so as to solve the technical problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions.

[0007] A conveying device for producing secondary zinc oxide to prevent overflow, comprising a circular mixing tank, with conveying pipes connected to both sides of the circular mixing tank, first air inlet mechanisms for conveying external air into the conveying pipes are respectively provided on the ends of the two conveying pipes away from the circular mixing tank, and discharge tanks which are vertically distributed and whose bottom ends correspond to and communicate with the conveying pipes are respectively installed on the two conveying pipes, a shaft extending along its axis is rotatably installed in the discharge tank, the bottom end of the shaft extends into the conveying pipe, a temporary storage tank with an upward opening is fixed to the bottom end of the shaft, the top of the temporary storage tank extends into the discharge tank and slidably fits with the inner wall of the discharge tank, a spiral auger blade is fixed to the outside of the shaft and above the temporary storage tank, a plurality of ejection outlets are arranged around the shaft on the temporary storage tank, an annular impact plate is installed on the periphery of the temporary storage tank through a connecting rod fixed on its outer wall, and the position of the annular impact plate corresponds to the position of the ejection outlet.

[0008] It can be seen that under the action of centrifugal force, the powder that falls into the temporary storage tank can be thrown out from the throwing outlet and impact on the inner edge wall of the annular impact plate, thereby breaking up the clumped and accumulated powder to avoid clumping and causing pipeline blockage. In addition, the powder monomers that are impacted and scattered have a small density and can be suspended in the air in stages, prolonging the contact time with the airflow and increasing the action time of wind on the powder, thereby improving the conveying effect of wind on the powder.

[0009] It integrates the functions of conveying and mixing. It can not only complete the conveying of zinc oxide, but also realize the mixing of zinc oxide and added powder. Zinc oxide can be mixed with other powders during the conveying process, and can be directly conveyed to the downstream process after mixing. There is no need to use mixing equipment, which reduces the investment in equipment costs, shortens working hours, and effectively improves production efficiency.

[0010] Preferably, the bottom of the circular mixing tank is connected to a discharge pipe for conveying the mixed material in the circular mixing tank to the next process, and the discharge tank is connected to a feed pipe near its top for conveying the material into the discharge tank, a feed valve is installed in the feed pipe, and a driving mechanism is provided at the top of the discharge tank, and the driving mechanism is used to drive the shaft to rotate in the discharge tank.

[0011] Preferably, the driving mechanism includes a fixed seat, a driving motor, a main gear, a connecting shaft and a driven gear. The driving motor is fixed to the top of the discharge tank through the fixed seat, the main gear is fixed to the output shaft of the driving motor, the top of the shaft extends through and extends to the top of the discharge tank, the connecting shaft is fixed to the top of the shaft, and the driven gear is fixed to the top of the connecting shaft and meshes with the main gear accordingly.

[0012] Preferably, a partition plate is fixed in the circular mixing tank to divide the space in the circular mixing tank and between the two conveying pipes into two separate compartments. A plurality of diverter plates are fixed on both sides of the partition plate, and the diverter plates divide the compartments into a plurality of vertically extending diverter channels. The airflow flowing into the circular mixing tank through the conveying pipe can be diverted into the diverter channel through the diverter plate, so that the powder is also diverted into the diverter channel. Under the obstruction of the partition plate, the airflow continues to flow downward along the diverter channel. Before mixing, the powder is diverted into multiple strands to ensure that it is in a diffuse state in the circular mixing tank to avoid excessive accumulation of powder and affect the uniform mixing in the later stage. A second air inlet mechanism is provided on the outside of the circular mixing tank and below the partition plate. The second air inlet mechanism is used to convey external air into the circular mixing tank.

[0013] Preferably, the second air inlet mechanism includes an air inlet pipe and a second fan, the air inlet pipe is fixed on the side of the circular mixing tank and is connected with the interior of the circular mixing tank, the air inlet pipe is kept perpendicular to the circular mixing tank, the central axis of the air inlet pipe is kept parallel to the tangent of the outer circle of the cross-section of the circular mixing tank, and the second fan is installed in the air inlet pipe. When the second fan is working, the external air is transported into the circular mixing tank through the air inlet pipe along the tangent direction of the inner edge of the circular mixing tank, and mixed with the airflow flowing downward from the diversion cavity to form a vortex airflow in the circular mixing tank, which can fully mix the secondary zinc oxide transported downward in the diversion cavity with the added powder, thereby improving the mixing processing quality, and the airflows in two directions complement each other, making the conveying airflow stronger and improving the conveying effect.

[0014] Preferably, the first air inlet mechanism includes an air inlet box, a guide tube and a first fan. The air inlet box has an air inlet on the top. The guide tube is fixed to the bottom of the air inlet box and communicates with the interior of the air inlet box. The bottom end of the guide tube is correspondingly communicated with the conveying pipe. The first fan is installed in the guide tube. An anti-overflow mechanism is also provided in the air inlet box.

[0015] Preferably, the overflow prevention mechanism includes an overflow prevention plate, a plurality of first rotating shafts and a plurality of sealing plates. The overflow prevention plate is provided with a plurality of flow slots which pass through the flow slots at intervals, and mounting holes are provided on the inner walls on both sides of each flow slot. The first rotating shafts are arranged in the flow slots one by one, and both ends are inserted into the mounting holes accordingly. The ends of the first rotating shafts are rotatably connected to the mounting holes accordingly, and the sealing plates are fixedly mounted on the first rotating shafts one by one. A torsion spring is provided in each mounting hole, and one end of the torsion spring is fixed to the end of the first rotating shaft, and the other end is fixed to the inner end wall of the mounting hole.

[0016] Preferably, a mounting ring is fixed inside the air inlet duct, a sealing disk is matched inside the mounting ring, a second rotating shaft rotatably connected to the sealing disk is inserted inside the sealing disk, both ends of the second rotating shaft respectively extend to the outside of the sealing disk and are fixed to the inner edge wall of the mounting ring, and the second rotating shaft is arranged above the centerline of the mounting ring.

[0017] Preferably, a second filter is installed at the port of the air inlet pipe away from the circular mixing tank, and a first filter is installed in the air inlet.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0019] 1. Under the action of centrifugal force, the present invention can throw the powder falling into the temporary storage tank out from the throwing outlet and impact on the inner edge wall of the annular impact plate, thereby breaking up the agglomerated powder and avoiding the blockage of the pipeline caused by agglomeration. In addition, the powder monomers scattered by impact have a small density and can be suspended in the air in stages, prolonging the contact time with the airflow and increasing the action time of wind force on the powder, thereby improving the conveying effect of wind force on the powder.

[0020] 2. The present invention integrates the functions of conveying and mixing, which can not only complete the conveying of zinc oxide, but also realize the mixing of zinc oxide and added powder. Zinc oxide and other powders can be mixed during the conveying process, and can be directly conveyed to the downstream process after mixing. There is no need to use mixing equipment, which reduces the investment in equipment costs, shortens working hours, and effectively improves production efficiency.

[0021] 3. The present invention can divert the airflow flowing into the circular mixing tank through the conveying pipe into the diversion cavity through the diversion plate, so that the powder is also diverted into the diversion cavity. Under the obstruction of the partition plate, the airflow continues to flow downward along the diversion cavity. Before mixing, the powder is diverted into multiple strands to ensure that it is in a dispersed state in the circular mixing tank, avoiding excessive accumulation of powder and affecting the uniform mixing in the later stage.

[0022] 4. When the second fan of the present invention is working, the external air is transported into the circular mixing tank through the air inlet pipe along the tangent direction of the inner edge of the circular mixing tank, and mixed with the airflow flowing downward from the diversion cavity, so as to form a vortex airflow in the circular mixing tank, and the secondary zinc oxide diverted and transported downward in the diversion cavity can be fully mixed with the added powder, thereby improving the mixing processing quality, and the airflows in two directions complement each other, so that the conveying airflow is stronger and the conveying effect is improved.

[0023] 5. After the wind disappears, the present invention can drive the first rotating shaft and the sealing plate to rotate and reset through the reset elastic force of the torsion spring, and the sealing plate will block the flow slot to prevent the residual powder in the conveying pipe from overflowing to the outside through the guide tube, the air inlet box and the air inlet in turn and polluting the environment. At the same time, after the wind disappears, the gravity of the sealing disk is used to automatically reset the sealing disk to a natural suspended state, thereby sealing the mounting ring and preventing the residual powder in the circular mixing tank from flowing back into the air inlet pipe and overflowing to pollute the environment. The opening and closing of the sealing plate and the sealing disk can be adaptively adjusted according to the wind force, without the need for additional drive, thereby further reducing the investment in equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 2 A schematic diagram of the flow direction of gas and powder in the conveying device provided by the present invention;

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the feed tank and the conveying pipe in the present invention;

[0027] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0028] Figure 5 This is one of the cross-sectional structural schematic diagrams of a circular mixing tank in the present invention;

[0029] Figure 6 This is the second schematic diagram of the cross-sectional structure of the circular mixing tank in the present invention;

[0030] Figure 7 The third schematic diagram of the cross-sectional structure of the circular mixing tank in the present invention;

[0031] Figure 8 This is one of the schematic diagrams of the air inlet pipe structure layout in the present invention;

[0032] Fig. 9 This is the second schematic diagram of the air inlet pipe structure layout in the present invention;

[0033] Fig.10 is a detailed structural diagram of the first air inlet mechanism in the present invention;

[0034] Fig.11 It is a schematic diagram of the local structure of the surface of the anti-overflow plate in the present invention;

[0035] Fig.12 Schematic diagram of the cross-sectional structure of the anti-overflow plate in the present invention;

[0036] Fig.13 It is a schematic diagram of the closed state and the open state of the blocking plate in the present invention;

[0037] Fig.14 This is a schematic diagram of the installation of the blocking disk structure in the present invention;

[0038] Fig.15 Schematic diagram of the closed state and the open state of the occluding disk in the present invention.

[0039] In the figure: 1, circular mixing tank; 101, compartment; 102, diversion cavity; 11, partition plate; 12, diversion plate; 2, conveying pipe; 3, unloading tank; 301, feed pipe; 302, feed valve; 31, shaft; 32, spiral auger blade; 33, temporary storage tank; 34, ejection outlet; 35, connecting rod; 36, annular impact plate; 37, driving mechanism; 371, fixing seat; 372, driving motor; 373, main gear; 374, connecting shaft; 375, driven gear; 4. First air inlet mechanism; 41. Air inlet box; 411. Air inlet; 412. First filter; 42. Guide tube; 43. First fan; 44. Anti-overflow mechanism; 441. Anti-overflow plate; 442. Flow slot; 443. Mounting hole; 444. First rotating shaft; 445. Torsion spring; 446. Sealing plate; 5. Discharge pipe; 6. Second air inlet mechanism; 61. Air inlet pipe; 62. Second fan; 63. Mounting ring; 64. Sealing plate; 641. Second rotating shaft; 65. Second filter. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1 - Fig.12 as well as Fig.14 The present invention provides a conveying device for producing secondary zinc oxide with overflow prevention, comprising a circular mixing tank 1, wherein two sides of the circular mixing tank 1 are respectively connected with conveying pipes 2, and the ends of the two conveying pipes 2 away from the circular mixing tank 1 are respectively provided with first air inlet mechanisms 4 for conveying external air into the conveying pipes 2, so as to form an airflow flowing toward one side of the circular mixing tank 1 in the conveying pipes 2, and the two conveying pipes 2 are respectively provided with discharge tanks 3 which are vertically distributed and whose bottom ends correspond to and communicate with the conveying pipes 2, and the discharge tanks 3 are respectively connected with a feeding pipe 301 for conveying materials into the discharge tank 3 near the top thereof, and a feeding valve 302 is installed in the feeding pipe 301, and when the materials are put into the discharge tank 3 through the feeding pipe 301, the feeding valve 302 is in an open state, and when the materials are not put into the discharge tank 3, the feeding valve 302 is in a closed state, so as to prevent the secondary zinc oxide in the discharge tank 3 from overflowing from the feeding pipe 301, and the bottom of the circular mixing tank 1 is connected with a discharge pipe 5 。

[0042] The secondary zinc oxide is transported to the discharge tank 3 through the feed pipe 301, and the secondary zinc oxide will fall downward into the conveying pipe 2. Other added powders are transported to another discharge tank 3 through another feed pipe 301, and the added powders fall downward into the conveying pipe 2. The secondary zinc oxide and the added powders are finally blown into the circular mixing tank 1 under the action of the airflow generated by the operation of the first air inlet mechanism 4 to achieve mixing. After the mixing is completed, the mixed material is transported to the next process through the discharge pipe 5, thereby realizing the function of transporting the secondary zinc oxide and mixing with other added powders.

[0043] A shaft rod 31 extending along its axis is rotatably installed in the unloading tank 3, and the bottom end of the shaft rod 31 extends into the conveying pipe 2. A driving mechanism 37 is provided at the top of the unloading tank 3. The driving mechanism 37 is used to drive the shaft rod 31 to rotate in the unloading tank 3. A temporary storage tank 33 with an upward opening is fixed at the bottom end of the shaft rod 31. The top of the temporary storage tank 33 extends into the unloading tank 3 and slides with the inner wall of the unloading tank 3. A spiral auger blade 32 is fixed on the outside of the shaft rod 31 and located above the temporary storage tank 33. A plurality of ejection outlets 34 are arranged around the shaft rod 31 on the temporary storage tank 33. An annular impact plate 36 is installed on the periphery of the tank 33 through a connecting rod 35 fixed on its outer wall. The position of the annular impact plate 36 corresponds to the position of the ejection outlet 34. The driving mechanism 37 drives the shaft 31 to rotate, and the rotating shaft 31 drives the spiral auger blades 32 to rotate, and the secondary zinc oxide at the bottom of the discharge tank 3 is spirally conveyed to the temporary storage tank 33. Under the spiral conveying action of the spiral auger blades 32, the secondary zinc oxide can be effectively prevented from accumulating at the lower end of the discharge tank 3 and causing blockage. Similarly, when adding powder on the other side, it also has the same beneficial effect.

[0044] When the shaft 31 rotates, it drives the temporary storage tank 33 and the annular impact plate 36 to rotate synchronously. Under the action of centrifugal force, the secondary zinc oxide that falls into the temporary storage tank 33 is thrown out from the throwing outlet 34 and hits the inner edge wall of the annular impact plate 36, which can break up the aggregated secondary zinc oxide and avoid the blockage of the pipeline caused by the agglomeration. In addition, the secondary zinc oxide monomers that are impacted and scattered have a small density and can be suspended in the air in stages, which prolongs the contact time with the airflow and increases the action time of wind on the particles, thereby improving the conveying effect of wind on the secondary zinc oxide. Similarly, when the added powder is added on the other side, it also has the same beneficial effect.

[0045] See also Figure 3The driving mechanism 37 includes a fixed seat 371, a driving motor 372, a main gear 373, a connecting shaft 374 and a driven gear 375. The driving motor 372 is fixed to the top of the discharge tank 3 through the fixed seat 371, the main gear 373 is fixed to the output shaft of the driving motor 372, the top of the shaft rod 31 extends to the top of the discharge tank 3, the connecting shaft 374 is fixed to the top of the shaft rod 31, and the driven gear 375 is fixed to the top of the connecting shaft 374 and meshes with the main gear 373. The driving motor 372 is driven, and its output shaft drives the main gear 373 to rotate. The rotating main gear 373 meshes and drives the driven gear 375 to rotate. Under the connection action of the connecting shaft 374, the shaft rod 31 is driven to rotate, providing drive for the rotation of the shaft rod 31.

[0046] See also Figure 1 , Figure 5 , Figure 6 and Figure 7 A partition plate 11 is fixed in the circular mixing tank 1, which divides the space in the circular mixing tank 1 and between the two conveying pipes 2 into two separate compartments 101. A plurality of diverter plates 12 are fixed on both sides of the partition plate 11, and the diverter plates 12 divide the compartment 101 into a plurality of vertically extending diverter channels 102. A second air inlet mechanism 6 is provided on the outside of the circular mixing tank 1 and below the partition plate 11. The second air inlet mechanism 6 is used to convey external air into the circular mixing tank 1. When the airflow blows the powder into the circular mixing tank 1, the airflow is diverted by the diverter plate 12 into the diverter channel 102, so that the powder is also diverted into the diverter channel 102, and can continue to flow downward along the diverter channel 102 under the obstruction of the partition plate 11. Before mixing, the powder is diverted into multiple strands to ensure that it is in a dispersed state in the circular mixing tank 1 to avoid excessive accumulation of powder and affect the uniform mixing in the later stage.

[0047] See also Figure 8 and Fig. 9 The second air inlet mechanism 6 includes an air inlet pipe 61 and a second fan 62. The air inlet pipe 61 is fixed on the side of the circular mixing tank 1 and is connected to the inside of the circular mixing tank 1. The air inlet pipe 61 is perpendicular to the circular mixing tank 1, and the central axis of the air inlet pipe 61 is parallel to the tangent of the outer circle of the cross section of the circular mixing tank 1. The second fan 62 is installed in the air inlet pipe 61. The air inlet pipe 61 extends along the tangent direction parallel to the outer edge of the cross section of the circular mixing tank 1. When the second fan 62 is working, the external air can be transported into the circular mixing tank 1 through the air inlet pipe 61 along the tangent direction of the inner edge of the circular mixing tank 1, and mixed with the airflow flowing downward from the diverter cavity 102 to form a vortex airflow in the circular mixing tank 1. The secondary zinc oxide diverted and transported downward in the diverter cavity 102 can be fully mixed with the added powder to improve the mixing processing quality. The airflows in the two directions complement each other, making the conveying airflow stronger and improving the conveying effect.

[0048] See also Figure 1 , Fig.10 , Fig.11 and Fig.12 The first air inlet mechanism 4 includes an air inlet box 41, a guide tube 42 and a first fan 43. The top of the air inlet box 41 is provided with an air inlet 411. The guide tube 42 is fixed to the bottom of the air inlet box 41 and communicates with the inside of the air inlet box 41. The bottom end of the guide tube 42 is correspondingly communicated with the conveying pipe 2. The first fan 43 is installed in the guide tube 42. When the first fan 43 works, the external air is sucked into the air inlet box 41 and the guide tube 42 through the air inlet 411, and blown into the conveying pipe 2, so that an airflow for blowing the powder into the circular mixing tank 1 can be formed in the conveying pipe 2.

[0049] See also Fig.10 , Fig.11 and Fig.12 An overflow prevention mechanism 44 is also provided in the air inlet box 41, and the overflow prevention mechanism 44 includes an overflow prevention plate 441, a plurality of first rotating shafts 444 and a plurality of blocking plates 446. A plurality of flow slots 442 which pass through the overflow prevention plate 441 are provided at intervals, and mounting holes 443 are provided on the inner walls on both sides of each flow slot 442. The first rotating shafts 444 are arranged in the flow slots 442 in a one-to-one correspondence, and both ends are correspondingly inserted into the mounting holes 443. The ends of the first rotating shafts 444 are correspondingly rotatably connected with the mounting holes 443, and the blocking plates 446 are fixedly mounted on the first rotating shafts 444 in a one-to-one correspondence. A torsion spring 445 is provided in each mounting hole 443, and one end of the torsion spring 445 is fixed to the end of the first rotating shaft 444, and the other end is fixed to the inner end wall of the mounting hole 443.

[0050] As the instruction manual Fig.13 As shown, when the first fan 43 is not working, the restraining effect of the torsion spring 445 is used to prevent the first rotating shaft 444 from rotating at will, thereby ensuring that the sealing plate 446 is in a horizontal state and the flow slot 442 is blocked to prevent the residual powder in the conveying pipe 2 from overflowing to the outside through the guide tube 42, the air inlet box 41 and the air inlet 411 in turn and polluting the environment. When the first fan 43 is working, the wind blows the sealing plates 446 to rotate and tilt, canceling the blockage of the flow slot 442, so that the air flow can smoothly enter the guide tube 42. At the same time, the sealing plate 446 drives the first rotating shaft 444 to rotate, and the end of the first rotating shaft 444 drives the torsion spring 445 to twist. The torsion spring 445 accumulates force. After the wind disappears, the reset elastic force of the torsion spring 445 can drive the first rotating shaft 444 and the sealing plate 446 to rotate and reset, and the sealing plate 446 blocks the flow slot 442 again, thereby realizing the adaptive opening and closing of the sealing plate 446.

[0051] See also Figure 8 , Fig. 9 and Fig.14A mounting ring 63 is fixed inside the air inlet pipe 61, a blocking disk 64 is matched and arranged inside the mounting ring 63, a second rotating shaft 641 rotatably connected to the blocking disk 64 is inserted into the blocking disk 64, both ends of the second rotating shaft 641 extend to the outside of the blocking disk 64 respectively, and are fixed to the inner edge wall of the mounting ring 63, and the second rotating shaft 641 is arranged above the central axis of the mounting ring 63.

[0052] As the instruction manual Fig.15 As shown, when the second fan 62 is working to generate airflow, the sealing disk 64 is blown to rotate around the second rotating shaft 641 to an inclined state, and the blocking of the mounting ring 63 is cancelled, so that the airflow can flow normally. Since the second rotating shaft 641 is arranged above the circle of the mounting ring 63, after the wind disappears, the gravity of the sealing disk 64 is used to automatically reset the sealing disk 64 to a natural suspended state, thereby sealing the mounting ring 63 and preventing the residual powder in the circular mixing tank 1 from flowing back into the air inlet pipe 61 and overflowing to pollute the environment. The opening and closing of the sealing disk 64 has the effect of adaptive adjustment, and no additional drive is required.

[0053] See also Figure 8 , Fig. 9 and Fig.10 A second filter 65 is installed at the end of the air inlet pipe 61 away from the circular mixing tank 1, and a first filter 412 is installed in the air inlet 411. The second filter 65 and the first filter 412 can filter dust and particulate impurities in the air to prevent them from entering the interior of the device and causing pollution to the transported powder.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A conveying device for producing zinc oxide to prevent overflow, characterized in that: It comprises a circular mixing tank (1), wherein two sides of the circular mixing tank (1) are respectively connected to a delivery pipe (2), and the ends of the two delivery pipes (2) away from the circular mixing tank (1) are respectively provided with a first air inlet mechanism (4) for delivering external air into the delivery pipes (2); A discharge tank (3) is installed on each of the two conveying pipes (2) and is vertically distributed and has a bottom end corresponding to the discharge tank (2). A shaft (31) extending along its axis is rotatably installed in the discharge tank (3), and the bottom end of the shaft (31) extends into the conveying pipe (2); A temporary storage tank (33) with an upward opening is fixed at the bottom end of the shaft rod (31); the top of the temporary storage tank (33) extends into the discharge tank (3) and is slidably fitted with the inner wall of the discharge tank (3); a spiral auger blade (32) is fixed outside the shaft rod (31) and above the temporary storage tank (33); The temporary storage tank (33) is provided with a plurality of ejection outlets (34) around the shaft (31); an annular impact plate (36) is installed on the periphery of the temporary storage tank (33) via a connecting rod (35) fixed on the outer wall thereof; the position of the annular impact plate (36) corresponds to the position of the ejection outlet (34); A partition plate (11) is fixed inside the circular mixing tank (1) to divide the space inside the circular mixing tank (1) and between the two conveying pipes (2) into two separate compartments (101); A plurality of flow dividers (12) are respectively fixed on both sides of the partition plate (11), and the flow dividers (12) divide the compartment (101) into a plurality of vertically extending flow divider channels (102); A second air inlet mechanism (6) is provided on the outer side of the circular mixing tank (1) and below the partition plate (11), and the second air inlet mechanism (6) is used to transport external air into the circular mixing tank (1); The second air inlet mechanism (6) comprises an air inlet pipe (61) and a second fan (62); The air inlet pipe (61) is fixed to the side of the circular mixing tank (1) and is connected to the inside of the circular mixing tank (1). The air inlet pipe (61) and the circular mixing tank (1) are kept perpendicular, and the central axis of the air inlet pipe (61) is kept parallel to the tangent line of the outer circle of the cross section of the circular mixing tank (1). The second fan (62) is installed in the air inlet pipe (61); The first air inlet mechanism (4) comprises an air inlet box (41), a guide tube (42) and a first fan (43); The top of the air inlet box (41) is provided with an air inlet (411); the guide tube (42) is fixed to the bottom of the air inlet box (41) and is connected to the inside of the air inlet box (41); the bottom end of the guide tube (42) is connected to the delivery pipe (2) correspondingly; The first fan (43) is installed in the guide tube (42); An anti-overflow mechanism (44) is also provided in the air inlet box (41).

2. A conveying device for producing zinc oxide to prevent overflow according to claim 1, characterized in that: The bottom of the circular mixing tank (1) is connected to a discharge pipe (5) for conveying the mixed materials in the circular mixing tank (1) to the next process; The feed tank (3) is connected to a feed pipe (301) near its top end for conveying materials into the feed tank (3), and a feed valve (302) is installed in the feed pipe (301); A driving mechanism (37) is provided at the top of the discharge tank (3), and the driving mechanism (37) is used to drive the shaft (31) to rotate inside the discharge tank (3).

3. A conveying device for producing zinc oxide to prevent overflow according to claim 2, characterized in that: The driving mechanism (37) comprises a fixing seat (371), a driving motor (372), a main gear (373), a connecting shaft (374) and a driven gear (375); The driving motor (372) is fixed to the top of the feeding tank (3) through the fixing seat (371), and the main gear (373) is fixed to the output shaft of the driving motor (372); The top end of the shaft (31) extends through the top of the discharge tank (3), the connecting shaft (374) is fixed on the top end of the shaft (31), and the driven gear (375) is fixed on the top end of the connecting shaft (374) and meshes with the main gear (373) accordingly.

4. The conveying device for producing zinc oxide with overflow prevention according to claim 1, characterized in that: The anti-overflow mechanism (44) comprises an anti-overflow plate (441), a plurality of first rotating shafts (444) and a plurality of blocking plates (446); The anti-overflow plate (441) is provided with a plurality of vertically penetrating flow slots (442) at intervals, and the inner walls on both sides of each flow slot (442) are respectively provided with mounting holes (443); The first rotating shafts (444) are arranged one by one in the circulation slots (442), and both ends are correspondingly inserted into the mounting holes (443), the ends of the first rotating shafts (444) are correspondingly rotatably connected to the mounting holes (443), and the blocking plates (446) are fixedly sleeved on the first rotating shafts (444) one by one; A torsion spring (445) is provided in each of the mounting holes (443), one end of the torsion spring (445) is fixed to the end of the first rotating shaft (444), and the other end is fixed to the inner end wall of the mounting hole (443).

5. The conveying device for producing zinc oxide with overflow prevention according to claim 1, characterized in that: A mounting ring (63) is fixed inside the air inlet pipe (61), a blocking disk (64) is matched and arranged inside the mounting ring (63), and a second rotating shaft (641) rotatably connected to the blocking disk (64) is inserted into the blocking disk (64); Both ends of the second rotating shaft (641) extend to the outside of the blocking disk (64) respectively, and are fixed to the inner edge wall of the mounting ring (63); The second rotating shaft (641) is arranged above the central axis of the mounting ring (63).

6. The conveying device for producing zinc oxide with overflow prevention according to claim 4, characterized in that: A second filter screen (65) is installed at the end of the air inlet pipe (61) away from the circular mixing tank (1); A first filter screen (412) is installed in the air inlet (411).

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