Stirring storage tank and dry powder production system

Abstract

The utility model relates to the technical field of machinery, in particular to a stirring storage tank and a dry powder production system. The stirring storage tank comprises a tank body, an air inlet assembly, a powder outlet pipeline and a plurality of nozzle mechanisms; the air inlet assembly comprises an annular pipe which is located at the bottom of an inner cavity of the tank body. The nozzle mechanism comprises a supporting pipe and a nozzle; the nozzle is communicated with the annular pipe through a supporting pipe. A ventilation cavity is formed in the center of the nozzle. At least two air outlet holes are formed in the peripheral side of the nozzle; one end of each air outlet is connected with the ventilation cavity, and the other end penetrates to the outer wall of the nozzle; the supporting pipe inclines towards the center of the annular pipe, and the central axes of the air outlet holes incline towards the center of the annular pipe. An inlet of the powder outlet pipeline is located in the center of the annular pipe, and an outlet of the powder outlet pipeline extends out of the tank body. Therefore, dry powder and gas can be efficiently mixed, and meanwhile, the gas injection effect is better to reduce dry powder accumulation.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a stirring storage tank and a dry powder production system. Background Art

[0002] The existing dry powder storage container is aerated and stirred, and then pressed into the powder discharge pipe. The air flow is sprayed vertically through the nozzle, and the impact drives the dry powder to rise and then enter the powder discharge pipe.

[0003] This method of vertical ventilation through the nozzle has defects: since the nozzle is buried under the dry powder, part of the dry powder is directly pressed into the powder outlet pipe after ventilation and fails to mix with the gas. The dry powder is lifted entirely by the impact of the airflow, and the gas and dry powder are not mixed evenly during the whole process.

[0004] In addition, when the dry powder inventory is less than a certain amount, the airflow can only drive a small amount of airflow to circulate a small amount of dry powder at the edge of the dry powder accumulation area, resulting in a small amount of subsequent dry powder spraying and a large amount of dry powder residue in the tank. Utility Model Content

[0005] The objectives of the present invention include, for example, providing a mixing storage tank and a dry powder production system, which can efficiently achieve mixing of dry powder and gas, while having a better air injection effect to reduce dry powder accumulation.

[0006] The embodiment of the present utility model can be implemented as follows:

[0007] In a first aspect, the utility model provides a stirring storage tank, comprising:

[0008] Tank body, air inlet assembly, powder outlet pipe, and multiple nozzle mechanisms;

[0009] The air intake assembly includes an annular tube and an air intake pipe, wherein the annular tube is located at the bottom of the inner cavity of the tank;

[0010] The nozzle mechanism includes a support tube and a nozzle; the nozzle is connected to the annular tube through the support tube, and the center of the nozzle has a ventilation cavity;

[0011] At least two air outlet holes are provided on the circumference of the nozzle; one end of each air outlet hole is connected to the ventilation cavity, and the other end passes through the outer wall of the nozzle; the support tube is inclined toward the center of the annular tube, and the central axis of the air outlet holes is inclined toward the center of the annular tube;

[0012] The inlet of the powder outlet pipeline is located at the center of the annular pipe, and the outlet of the powder outlet pipeline extends to the outside of the tank body.

[0013] In an optional embodiment, the central axes of the plurality of air outlet holes are all located on a preset installation plane.

[0014] In an optional embodiment, the support tube remains perpendicular to the preset installation plane.

[0015] In an optional embodiment, the angle between the support tube and the circumferential plane where the annular tube is located is 60-80°.

[0016] In an optional embodiment, the plurality of air outlet holes are evenly distributed circumferentially on the nozzle.

[0017] In an optional embodiment, the air intake assembly also includes an air intake pipe; one end of the air intake pipe is connected to the annular pipe, and the other end of the air intake pipe extends outside the tank body; the connection between the air intake pipe and the annular pipe forms an intersection, and the line between the intersection and the center of the annular pipe forms a reference line; multiple nozzles are evenly distributed on the annular pipe, and the nozzle closest to the intersection maintains an angle of 15-20° with the reference line.

[0018] In an optional embodiment, the annular tube is in the shape of a circular ring.

[0019] In an optional embodiment, a gravity ball is further included in the ventilation cavity, the air outlet is located on the inner wall of the ventilation cavity to form a first opening, and the connection between the support tube and the inner wall of the ventilation cavity forms a second opening; the calibers of the first opening and the second opening are both smaller than the diameter of the gravity ball; the gravity ball is configured to fall down by gravity to block the second opening.

[0020] In an optional embodiment, a mating channel is provided at the bottom of the nozzle, the top of the mating channel extends to the ventilation cavity, and the bottom of the mating channel passes through to the bottom outer wall of the nozzle; the top of the support tube is inserted into the mating channel, and the top outer wall of the support tube is pressed against the inner wall of the mating channel, and the top opening of the support tube forms the second opening.

[0021] In a second aspect, the present invention provides a dry powder production system, which includes a stirring storage tank according to any one of the aforementioned embodiments.

[0022] The beneficial effects of the embodiments of the present invention include, for example:

[0023] The mixing storage tank of this embodiment includes a tank body, an air inlet assembly, a powder discharge pipe, and multiple nozzle mechanisms. The annular pipe of the air inlet assembly is located at the bottom of the tank body. Dry powder tends to settle toward the bottom due to gravity, allowing gas to be ejected from the bottom of the tank body, thereby maximizing the mixing of the dry powder and gas. The inlet of the powder discharge pipe is located at the center of the annular pipe, allowing the mixed dry powder to be discharged from the discharge pipe promptly. This prevents residual dry powder from settling, ensures powder discharge efficiency, and thus ensures the quality of the mixed dry powder mixture. Furthermore, multiple nozzle mechanisms are provided on the annular pipe, each nozzle having at least two air outlets, and both the nozzle mechanisms and the air outlets are inclined toward the center of the annular pipe. Because each nozzle is located at a different distance from the air inlet end of the annular pipe, the pressure of the air jet from each nozzle varies. The air outlets toward the center of the annular pipe can form a small vortex in the center of the annular pipe, driving the dry powder. Other air outlets farther away from the annular pipe can also sweep the inner wall surface of the dry powder storage tank and act as dust collectors. This arrangement increases the dust-raising capacity at the bottom of the tank cavity, ensuring uniform mixing of the dry powder while improving the situation of a large amount of dry powder residue. In summary, this mixing storage tank has a simple structure and is easy to operate, effectively improving the defects of uneven dry powder mixing and a large amount of dry powder residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic structural diagram of a stirring storage tank according to an embodiment of the present utility model;

[0026] Figure 2 This is a partial schematic diagram of an air intake assembly of a stirring storage tank according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic cross-sectional view of a stirring storage tank according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic cross-sectional view of the nozzle mechanism of the stirring storage tank according to an embodiment of the present utility model.

[0029] Icons: 100-tank body; 101-cleaning port; 102-pressure gauge interface; 103-dry powder addition port; 104-safety valve interface; 105-vent pipe; 200-air inlet assembly; 210-annular pipe; 220-air inlet pipe; 300-powder outlet pipe; 400-nozzle mechanism; 410-support pipe; 420-nozzle; 421-vent chamber; 422-air outlet; 423-matching channel; 500-gravity ball; 510-first opening; 520-second opening; A-preset installation plane; B-intersection point; C-reference line. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0034] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0035] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0036] Existing dry powder storage containers aerate and stir the dry powder before forcing it into the powder outlet pipe. Airflow is sprayed vertically through a nozzle, causing the impact to lift the dry powder and then enter the powder outlet pipe. However, this method of vertical aeration through a nozzle has the following drawbacks:

[0037] 1. The dry powder and gas are not mixed evenly;

[0038] 2. There is a lot of residual dry powder in the dry powder tank;

[0039] 3. After the ventilation is stopped, the dry powder in the tank will precipitate into the nozzle and be deposited in the air inlet pipe, affecting the use of the dry powder storage tank after adding dry powder.

[0040] To improve the above technical problems, a stirring storage tank and a dry powder production system are provided in the following embodiments.

[0041] Please refer to Figure 1 This embodiment provides a stirring storage tank, including a tank body 100, an air intake assembly 200, a powder outlet pipe 300, and multiple nozzle mechanisms 400.

[0042] The air intake assembly 200 includes an annular tube 210 , which is located at the bottom of the inner cavity of the tank body 100 ;

[0043] The nozzle mechanism 400 includes a support tube 410 and a nozzle 420 ; the nozzle 420 is connected to the annular tube 210 through the support tube 410 , and a ventilation cavity 421 is formed in the center of the nozzle 420 ;

[0044] At least two air outlet holes 422 are provided around the nozzle 420; one end of each air outlet hole 422 is connected to the ventilation cavity 421, and the other end passes through the outer wall of the nozzle 420; the support tube 410 is inclined toward the center of the annular tube 210, and the central axis of the air outlet holes 422 is inclined toward the center of the annular tube 210;

[0045] The inlet of the powder outlet pipe 300 is located at the center of the annular pipe 210 , and the outlet of the powder outlet pipe 300 extends to the outside of the tank body 100 .

[0046] The annular tube 210 of the air inlet assembly 200 of such a mixing storage tank is arranged at the bottom of the inner cavity of the tank body 100, and the dry powder tends to settle toward the bottom due to gravity, so that the gas can be ejected from the bottom position of the tank body 100, thereby mixing the dry powder and the gas to the greatest extent possible; at the same time, the inlet of the powder discharge pipe 300 is located at the center of the annular tube 210, so that the mixed dry powder can be discharged from the powder discharge pipe 300 in a timely manner, which not only avoids the residual deposition of dry powder, but also ensures the powder discharge efficiency, thereby ensuring the quality of the mixed dry powder mixture.

[0047] Furthermore, multiple nozzle mechanisms 400 are provided on the annular tube 210, each nozzle 420 having at least two air outlets 422, and both the nozzle mechanisms 400 and the air outlets 422 are inclined toward the center of the annular tube 210. Because each nozzle 420 is at a different distance from the air inlet end (here, the air inlet tube 220) on the annular tube, the pressure of the jet from each nozzle 420 is different. Thus, the air outlet 422 facing the center of the annular tube 210 can form a small vortex in the center of the annular tube 210, driving the dry powder, while the other air outlets 422 away from the annular tube 210 can also sweep the inner wall surface of the dry powder storage tank and play a dust-raising role. This arrangement increases the dust-raising capacity of the bottom of the inner cavity of the tank body 100, while ensuring uniform mixing of the dry powder, and improving the situation where there is a large amount of residual dry powder. This can effectively improve the defects of uneven mixing of dry powder and a large amount of residual dry powder.

[0048] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As can be seen from the figure, nozzle 420 is provided with through holes only on the circumference, and no air outlet holes 422 are provided on the top of nozzle 420 away from annular tube 210. This has the advantage of preventing dry powder from falling directly into vent cavity 421 and clogging air inlet assembly 200, while also ensuring that the air outlet holes 422 on the circumference have a higher air pressure during jetting, thereby improving the dust removal capability of nozzle mechanism 400. Optionally, annular tube 210 is annular.

[0049] from Figure 1 As can be seen in the figure, a dry powder addition port 103 is provided at the top of the tank body 100. A pressure gauge port 102 and a safety valve port 104 are provided on the upper side of the tank body 100. A venting pipe 105 is provided on the side wall of the tank body 100. A purge port 101 is provided at the bottom of the tank body 100, located below the air inlet assembly 200.

[0050] Furthermore, the tank body 100 is a cylindrical structure, and the center of the annular tube 210 is located at the central axis of the tank body 100 .

[0051] See also Figure 1 、 Figure 2 and Figure 3 As can be seen from the figure, in an optional embodiment, the central axes of the multiple air outlet holes 422 are all located on the preset installation plane A. That is, the multiple air outlet holes 422 of each nozzle 420 are all located on the same plane, which facilitates processing and avoids causing air flow turbulence in the ventilation cavity 421 and affecting the jet effect of the air outlet holes 422.

[0052] It should be noted that in this embodiment, the multiple nozzle mechanisms 400 have the same shape and size, and each nozzle mechanism 400 is at the same distance from the annular tube 210. It is readily understood that in other embodiments of the present invention, the structure of the nozzle mechanism 400 can be adjusted as needed, and the relative positions of the multiple air outlet holes 422 of the nozzle mechanism 400 can be reasonably selected and designed based on actual needs. This is merely an example.

[0053] In an optional embodiment, the support tube 410 remains perpendicular to the preset installation plane A.

[0054] from Figure 1 and Figure 2 As can also be seen in the figure, in an optional embodiment, the support tube 410 forms an angle α with the circumferential plane of the annular tube 210, α = 60-80°, preferably 70°. This causes the nozzle mechanism 400 to tilt toward the center of the annular tube 210, thereby forming a vortex at the center of the annular tube 210 and the inlet of the powder discharge duct 300, thereby providing a dust removal effect.

[0055] In an optional embodiment, the plurality of air outlet holes 422 are evenly distributed around the nozzle 420. This ensures that the plurality of air outlet holes 422 of the nozzle 420 eject air more smoothly and avoids airflow interference between the air outlet holes 422.

[0056] from Figure 3 It can also be seen that in an optional embodiment, the air intake assembly 200 also includes an air intake pipe 220; one end of the air intake pipe 220 is connected to the annular pipe 210, and the other end of the air intake pipe 220 extends to the outside of the tank body 100; the connection between the air intake pipe 220 and the annular pipe 210 forms an intersection point B, and the line between the intersection point B and the center of the annular pipe 210 forms a reference line C; multiple nozzles 420 are evenly distributed on the annular pipe 210, and the nozzle 420 closest to the intersection point B has an angle β with the reference line C, β = 15-20°.

[0057] In this embodiment, the stirring storage tank includes four nozzle mechanisms 400, which are evenly distributed circumferentially on the circular annular tube 210, two of which are located near the reference line C, and both of the nozzle mechanisms 400 maintain an angle of 15° with the reference line C; along the direction of the center line passing through the circular annular tube 210 and perpendicular to the reference line C, the other two nozzle mechanisms 400 maintain an angle of 15° with the center line.

[0058] like Figure 4As shown, in an optional embodiment, the mixing storage tank further includes a gravity ball 500 disposed in the ventilation cavity 421. The air outlet 422 is located on the inner wall of the ventilation cavity 421 to form a first opening 510. The connection between the support tube 410 and the inner wall of the ventilation cavity 421 forms a second opening 520. The diameters of the first opening 510 and the second opening 520 are both smaller than the diameter of the gravity ball 500. The gravity ball 500 is configured to fall due to gravity to block the second opening 520. During ventilation, the gravity ball 500 is blown up by the air flow, and the air flow can pass through the gap between the gravity ball 500 and the ventilation cavity 421 and eject air from the air outlet 422. After the air flow is stopped, the steel ball falls due to gravity to block the second opening 520.

[0059] Optionally, the gravity ball 500 is a metal ball, preferably a steel ball.

[0060] In an alternative embodiment, a mating channel 423 is provided at the bottom of the nozzle 420. The top of the mating channel 423 extends to the vent cavity 421, and the bottom of the mating channel 423 passes through the bottom outer wall of the nozzle 420. The top of the support tube 410 is inserted into the mating channel 423, and the top outer wall of the support tube 410 abuts against the inner wall of the mating channel 423. The top of the support tube 410 forms a second opening 520. This arrangement facilitates assembly, disassembly, and maintenance of the nozzle mechanism 400.

[0061] When in use, the nozzle mechanism 400 is installed at a certain tilt angle, so that the air outlet 422 of the nozzle 420 and the inner wall of the tank body 100 have a certain angle on the plane.

[0062] Furthermore, since the annular tube 210 of the air intake assembly 200 forms a complete ring inside the tank body 100, the gas will be depressurized after flowing through the nozzle 420 and ejected from the lower end, which makes the pressure of the air outlet 422 of the nozzle 420 farthest away lower than that of other ports, and the gas is also more likely to flow to the end with the lowest pressure.

[0063] In addition, the nozzle 420 is installed obliquely, and the air flow is blocked and drained through the tank body 100, and the gas flow forms a small vortex, which drives the dry powder and gas to mix evenly; and the remaining air outlet holes 422 of the nozzle 420 can also blow the inner wall surface of the tank body 100 and play a role in dust removal.

[0064] Secondly, the present invention provides a dry powder production system comprising a mixing and storage tank according to any of the aforementioned embodiments. This dry powder production line system can produce a uniformly mixed product while addressing existing shortcomings such as uneven mixing of dry powder and gas, a large amount of residual dry powder in the dry powder tank, and the precipitation of dry powder in the tank after ventilation is stopped, which can enter the nozzle 420 and be deposited in the air intake pipe, affecting the use of the dry powder storage tank after adding dry powder.

[0065] In summary, the embodiments of the present invention provide a mixing storage tank and a dry powder production system, which have at least the following advantages:

[0066] When high-pressure gas enters, the gravity ball 500 is blown up, and after ventilation stops, the gravity ball 500 falls back to block the second opening 520, thereby effectively improving the defects of dry powder deposition and air intake pipe after ventilation stops.

[0067] The multiple air outlet holes 422 of the nozzle mechanism 400 and the oblique installation of the nozzle mechanism 400 form a vortex so that the dry powder can be fully stirred, ensuring that the dry powder and the gas are evenly mixed;

[0068] The obliquely mounted nozzle mechanism 400 and the plurality of air outlet holes 422 can increase the sweeping area of the airflow passing through the inner wall of the tank body 100, effectively solving the defects of uneven dry powder mixing and a large amount of dry powder residue.

[0069] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. Therefore, the scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A stirring storage tank, characterized in that: include: A tank body (100), an air intake assembly (200), a powder outlet pipe (300), and a plurality of nozzle mechanisms (400); The air intake assembly (200) comprises an annular tube, and the annular tube (210) is located at the bottom of the inner cavity of the tank body (100); The nozzle mechanism (400) comprises a support tube (410) and a nozzle (420); the nozzle (420) is connected to the annular tube (210) through the support tube (410), and a ventilation cavity (421) is provided at the center of the nozzle (420); At least two air outlet holes (422) are provided on the circumference of the nozzle (420); one end of each air outlet hole (422) is connected to the ventilation cavity (421), and the other end passes through the outer wall of the nozzle (420); the support tube (410) is inclined toward the center of the annular tube (210), and the central axis of each air outlet hole (422) is inclined toward the center of the annular tube (210); The inlet of the powder outlet pipe (300) is located at the center of the annular pipe (210), and the outlet of the powder outlet pipe (300) extends to the outside of the tank body (100).

2. The stirring storage tank according to claim 1, characterized in that: The central axes of the plurality of air outlet holes (422) are all located on a preset installation plane (A).

3. The stirring storage tank according to claim 2, characterized in that: The support tube (410) remains perpendicular to the preset installation plane (A).

4. The stirring storage tank according to claim 2, characterized in that: The included angle between the support tube (410) and the circumferential plane where the annular tube (210) is located is 60-80°.

5. The stirring storage tank according to claim 1, characterized in that: The plurality of air outlet holes (422) are evenly distributed on the nozzle (420) in a circumferential direction.

6. The stirring storage tank according to claim 1, characterized in that: The air intake assembly (200) further includes an air intake pipe (220); one end of the air intake pipe (220) is connected to the annular pipe (210), and the other end of the air intake pipe (220) extends to the outside of the tank body (100); The connection between the air intake pipe (220) and the annular pipe (210) forms an intersection point (B), and a line connecting the intersection point (B) and the center of the annular pipe (210) forms a reference line (C); a plurality of nozzles (420) are evenly distributed on the annular pipe (210), and the nozzle (420) closest to the intersection point (B) maintains an angle of 15-20 degrees with the reference line (C).

7. The stirring storage tank according to claim 1, characterized in that: The annular tube (210) is in the shape of a circular ring.

8. The stirring storage tank according to any one of claims 1 to 7, characterized in that: The invention also includes a gravity ball (500) arranged in the ventilation cavity (421), the air outlet (422) is located on the inner wall of the ventilation cavity (421) to form a first opening (510), and the connection between the support tube (410) and the inner wall of the ventilation cavity (421) forms a second opening (520); the diameters of the first opening (510) and the second opening (520) are both smaller than the diameter of the gravity ball (500); the gravity ball (500) is configured to fall down by gravity to block the second opening (520).

9. The stirring storage tank according to claim 8, characterized in that: A fitting channel (423) is provided at the bottom of the nozzle (420), the top of the fitting channel (423) extends to the ventilation cavity (421), and the bottom of the fitting channel (423) passes through to the bottom outer wall of the nozzle (420); the top of the support tube (410) is inserted into the fitting channel (423), and the top outer wall of the support tube (410) is pressed against the inner wall of the fitting channel (423), and the top opening of the support tube (410) forms the second opening (520).

10. A dry powder production system, characterized in that: The dry powder production system comprises the stirring storage tank according to any one of claims 1 to 9.

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