Powder drying device

Abstract

The utility model relates to the technical field of drying equipment, in particular to a material powder drying device. Comprising a base body, a drying box movably placed on the base body, a plurality of sets of elastic connecting pieces and a hot air supply mechanism, the drying box is elastically connected with the base body through the elastic connecting pieces, and two symmetrically-arranged vibration motors are installed on the outer wall of the drying box; the hot air supply mechanism comprises a hot air pipeline vertically penetrating through the drying box, a heating box communicating with the hot air pipeline and a fan blowing air into the heating box, an electric heating piece is installed in the heating box, and the output end of the hot air pipeline communicates with the input end of the fan; and a feeding pipe and an exhaust pipe which are communicated with the material cavity are arranged on the drying box. The powder drying device can crush cakes in powder, improve the contact uniformity of the powder and a heat source, effectively shorten the powder drying time, continuously dry the powder, improve the drying efficiency and save more energy.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to a material powder drying device. Background Art

[0002] As we all know, powder drying equipment is widely used in various fields. Among them, the hot air circulation oven heats the air and circulates the hot air in the oven to evenly heat the material. It is suitable for drying chemical intermediates, dyes and other materials. This method is simple to operate and suitable for large-scale production.

[0003] For example, Chinese utility model patent publication number CN217303387U discloses a hot air circulation oven for silver powder processing, comprising: a device shell, a connection groove is opened at the top of the device shell, and two hot air circulation fans are fixedly connected to the top of the device shell; a tray, the tray is arranged in the connection groove; a second fixed plate, the second fixed plate is fixedly connected to one side end of the device shell, and a nut in the adjustment mechanism; it can make it more convenient for personnel to take out the silver powder.

[0004] However, the following defects were found: the powder was dried in a static manner, and the moisture inside the agglomerated particles in the powder was not discharged smoothly, which prolonged the drying time of the powder; and the powder was dried in batches on trays, and the loading and unloading time of the powder was long. Part of the heat in the oven was dissipated during the loading and unloading process of the powder, which affected the drying efficiency of the powder and caused a large heat loss, and had certain limitations in use. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a powder drying device which can break up lumps in powder, improve the uniformity of contact between powder and heat source, effectively shorten the drying time of powder, continuously dry the powder, improve the drying efficiency, and be more energy-efficient.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a material powder drying device, comprising a base, a drying box movably placed on the base, multiple groups of elastic connecting parts and a hot air supply mechanism, the drying box is elastically connected to the base through the elastic connecting parts, two symmetrically arranged vibration motors are installed on the outer wall of the drying box, the hot air supply mechanism comprises a hot air duct that runs through the drying box from top to bottom, a heating box connected to the hot air duct, and a fan that blows air into the heating box, an electric heating element is installed in the heating box, the output end of the hot air duct is connected to the input end of the fan, a material cavity is provided in the upper part of the drying box, a feed pipe and an exhaust pipe that are connected to the material cavity are provided on the drying box, a drying cavity is provided in the middle and lower part of the drying box, a first screen is installed at the junction of the drying cavity and the material cavity, and a discharge pipe is provided on one side of the bottom of the drying box.

[0007] Furthermore, the electric heating element may be an electric heating tube, an electric heating wire or other equivalent parts with electric heating effect; the feed pipe and the exhaust pipe are symmetrically arranged on both sides of the top of the drying box; the elastic connecting part is preferably a spring, and other equivalent parts with connecting effect may also be used.

[0008] Preferably, a conical collecting hood is installed in the drying box, the conical collecting hood is located below the first screen, and a ring opening with an inner diameter larger than the outer diameter of the hot air duct is provided at the small-diameter discharge end at the bottom of the conical collecting hood.

[0009] Preferably, a conical bulk material cover is fixedly mounted on the hot air duct, the conical bulk material cover is located below the conical collecting cover, the small-diameter end of the conical bulk material cover faces upward, and the conical bulk material cover is provided with a plurality of evenly distributed leakage holes.

[0010] Preferably, a second screen is provided in the middle of the drying chamber, and the second screen is located below the conical bulk material cover; further, the first screen and the second screen are between the hot air duct.

[0011] Preferably, a plurality of circumferentially evenly distributed percussion hammers are installed on the inner wall of the drying chamber near the conical bulk material cover.

[0012] Preferably, the wall thickness of the conical bulk material cover is 4-6 mm, and the conical bulk material cover is made of copper.

[0013] Preferably, a flexible flame-retardant rubber sealing ring is provided at the connection between the hot air duct and the drying box.

[0014] Preferably, a spherical arc portion is provided at the bottom of the outer wall of the drying box, a supporting portion which fits with the spherical arc portion is provided on the seat body, and the spherical arc portion is rotatably installed in the supporting portion.

[0015] Compared with the prior art, the utility model provides a material powder drying device, which has the following beneficial effects: the material powder drying device puts the powder into the first screen in the material cavity through the feed pipe, the fan blows air into the heating box, the electric heating element heats the air, the hot air enters the hot air duct, the hot air duct dissipates heat into the drying box, and the cooled air flows back to the air suction port of the fan again, thus realizing the circulation of hot air to reduce the loss of heat to the outside, the vibration motor drives the drying box to vibrate with high frequency and low amplitude, and under the action of vibration, the powder is dispersed and falls through the first screen, and the powder left on the first screen is The agglomerates come into contact with the rising hot air flow, and the powder agglomerates are gradually dried from the outside to the inside. Under the action of vibration, the dry powder on the outer layer of the powder agglomerates is shaken off, so that the inside of the powder agglomerates is fully in contact with the heat source, thereby accelerating the drying efficiency of the powder agglomerates. Under the vibration of the first screen and the action of gravity, the powder is dispersed and falls into the drying chamber, and the dispersed powder is fully in contact with the hot air in the drying chamber and is dried. The dried powder is discharged through a discharge pipe, and the agglomerates in the powder are broken up, thereby improving the uniformity of contact between the powder and the heat source, effectively shortening the drying time of the powder, and continuously drying the powder to improve the drying efficiency and save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the top plan structure of the utility model.

[0018] Figure 3 The utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0019] Figure 4 The utility model Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0020] Markings in the attached drawings: 1. base; 2. drying box; 3. elastic connector; 4. vibration motor; 5. hot air duct; 6. heating box; 7. fan; 8. electric heating element; 9. material chamber; 10. feed pipe; 11. exhaust pipe; 12. drying chamber; 13. first screen; 14. conical collecting cover; 15. ring mouth; 16. conical bulk cover; 17. leakage hole; 18. second screen; 19. knocking hammer; 20. flexible flame-retardant rubber sealing ring; 21. ball arc part; 22. supporting part. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0023] 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, further definition and explanation thereof is not required in subsequent drawings.

[0024] Example 1

[0025] Please refer to Figures 1 to 3 A material powder drying device comprises a base body 1, a drying box 2 movably placed on the base body 1, a plurality of groups of elastic connecting members 3 and a hot air supply mechanism, the drying box 2 is elastically connected to the base body 1 through the elastic connecting member 3, two symmetrically arranged vibration motors 4 are installed on the outer wall of the drying box 2, the hot air supply mechanism comprises a hot air duct 5 which passes through the drying box 2 from top to bottom, a heating box 6 which is connected to the hot air duct 5, and a fan 7 which blows air into the heating box 6, an electric heating element 8 is installed in the heating box 6, the output end of the hot air duct 5 is connected to the input end of the fan 7, a material cavity 9 is provided in the upper part of the drying box 2, a feeding pipe 10 and an exhaust pipe 11 which are connected to the material cavity 9 are provided on the drying box 2, a drying cavity 12 is provided in the middle and lower part of the drying box 2, a first screen 13 is installed at the junction of the drying cavity 12 and the material cavity 9, and a discharge pipe is provided on one side of the bottom of the drying box 2. Furthermore, the electric heating element 8 can be an electric heating tube, an electric heating wire or other equivalent parts with electric heating effect; the feed pipe 10 and the exhaust pipe 11 are symmetrically arranged on both sides of the top of the drying box 2; the elastic connecting member 3 is preferably a spring, and other equivalent parts with connecting effect can also be used.

[0026] A flexible flame-retardant rubber sealing ring 20 is provided at the connection between the hot air duct 5 and the drying box 2. A spherical arc portion 21 is provided at the bottom of the outer wall of the drying box 2, and a supporting portion 22 that fits the spherical arc portion 21 is provided on the seat body 1. The spherical arc portion 21 is rotatably installed in the supporting portion 22; Figure 3 As shown in the dotted line, under the action of the ball arc portion 21 and the supporting portion 22, the drying box 2 is placed on the base 1 like a "tumbler", realizing the movable connection between the drying box 2 and the base 1, ensuring the vibration effect of the drying box 2 while preventing the drying box 2 from overturning.

[0027] A conical collecting cover 14 is installed in the drying box 2 and is located below the first screen 13 . A ring opening 15 with an inner diameter larger than the outer diameter of the hot air duct 5 is provided at the small-diameter discharge end at the bottom of the conical collecting cover 14 .

[0028] In the powder drying device provided in this embodiment, the flexible flame-retardant rubber sealing ring 20 can realize a flexible sealing connection between the drying box 2 and the hot air duct 5 to prevent the powder from escaping from the gap between the hot air duct 5 and the drying box 2; the conical collecting hood 14 can gather the falling powder to the outer wall of the hot air duct 5, so that the falling powder contacts the outer wall of the hot air duct 5, thereby improving the heat exchange effect between the powder and the hot air duct 5, thereby improving the drying effect of the powder.

[0029] Example 2

[0030] The powder drying device provided in Example 1 is further optimized. For details, please refer to Figure 3-4 A conical bulk material cover 16 is fixedly installed on the hot air duct 5, and the conical bulk material cover 16 is located below the conical collecting cover 14. The small-diameter end of the conical bulk material cover 16 faces upward, and a plurality of evenly distributed leakage holes 17 are provided on the conical bulk material cover 16.

[0031] A second screen 18 is provided in the middle of the drying chamber 12 and is located below the conical bulk material cover 16 ; further, between the first screen 13 and the second screen 18 and the hot air duct 5 , the screen hole diameter on the second screen 18 is smaller than the screen hole diameter on the first screen 13 .

[0032] A plurality of circumferentially evenly distributed percussion hammers 19 are installed on the inner wall of the drying chamber 12 near the conical bulk material cover 16. In this embodiment, the wall thickness of the conical bulk material cover 16 is 4-6 mm, and the conical bulk material cover 16 is made of copper.

[0033] In the powder drying device provided in the present embodiment, the falling powder falls to the conical bulk cover 16, and the copper material has a good heat conduction effect. The conical bulk cover 16 can further extend the heat dissipation area of ​​the hot air duct 5 into the drying chamber 12, and the heated conical bulk cover 16 further heats and dries the powder. At the same time, the vibration of the drying box 2 drives the knocking hammer 19 to produce a knocking effect on the edge of the conical bulk cover 16. Under the knocking action, the conical bulk cover 16 vibrates, and the particle agglomerates in the powder are further broken up. The powder on the conical bulk cover 16 is evenly dispersed and falls through the leakage hole 17 and the edge of the conical bulk cover 16. The second screen 18 intercepts the agglomerated particles in the powder again. The second screen 18 further breaks the residual agglomerates during the vibration of the drying box 2, so as to achieve the complete breaking of the agglomerates in the powder material, further improve the heating and drying effect of the powder, and effectively reduce the accumulation of the powder material at the conical bulk cover 16.

[0034] The use process of the powder drying device provided by the utility model is as follows: the powder is placed into the first screen 13 in the material chamber 9 through the feed pipe 10, the fan 7 blows air into the heating box 6, the electric heating element 8 heats the air, and the hot air enters the hot air duct 5, the hot air duct 5 dissipates heat into the drying box 2, and the cooled air flows back to the suction port of the fan 7 again, so that the circulation of hot air is realized to reduce the loss of heat to the outside, and the vibration motor 4 drives the drying box 2 to vibrate with high frequency and low amplitude. Under the action of vibration, the powder passes through the first screen 13 disperses and falls, and the powder agglomerates retained on the first screen 13 come into contact with the rising hot air flow, and the powder agglomerates are gradually dried from the outside to the inside, and under the action of vibration, the dry powder on the outer layer of the powder agglomerates is shaken off, so that the inside of the powder agglomerates is fully in contact with the heat source, thereby accelerating the drying efficiency of the powder agglomerates, and under the vibration of the first screen 13 and the action of gravity, the powders are dispersed and fall into the drying chamber 12, and under the action of the conical collecting cover 14 and the conical bulk cover 16, the powders are fully dried in the drying chamber 12, and the dried powders can be discharged through the discharge pipe.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A powder drying device, characterized in that: The invention comprises a base (1), a drying box (2) movably placed on the base (1), a plurality of sets of elastic connecting members (3) and a hot air supply mechanism, wherein the drying box (2) is elastically connected to the base (1) via the elastic connecting members (3), two symmetrically arranged vibration motors (4) are installed on the outer wall of the drying box (2), and the hot air supply mechanism comprises a hot air duct (5) penetrating the drying box (2) from top to bottom, a heating box (6) connected to the hot air duct (5), and a fan (7) for blowing air into the heating box (6), wherein the hot air supply mechanism comprises a hot air duct (5) penetrating the drying box (2) from top to bottom, a heating box (6) connected to the hot air duct (5), and a fan (7) for blowing air into the heating box (6), An electric heating element (8) is installed in the heating box (6), the output end of the hot air duct (5) is connected to the input end of the fan (7), a material chamber (9) is provided in the upper part of the drying box (2), a feed pipe (10) and an exhaust pipe (11) which are connected to the material chamber (9) are provided on the drying box (2), a drying chamber (12) is provided in the middle and lower part of the drying box (2), a first screen (13) is installed at the connection between the drying chamber (12) and the material chamber (9), and a discharge pipe is provided on one side of the bottom of the drying box (2).

2. A powder drying device according to claim 1, characterized in that: A conical material collecting hood (14) is installed in the drying box (2). The conical material collecting hood (14) is located below the first screen (13). A ring opening (15) having an inner diameter larger than the outer diameter of the hot air duct (5) is provided at the small-diameter discharge end at the bottom of the conical material collecting hood (14).

3. A powder drying device according to claim 1, characterized in that: A conical bulk material cover (16) is fixedly mounted on the hot air duct (5). The conical bulk material cover (16) is located below the conical collecting cover (14). The small-diameter end of the conical bulk material cover (16) faces upward. The conical bulk material cover (16) is provided with a plurality of evenly distributed leakage holes (17).

4. A powder drying device according to claim 1, characterized in that: A second screen (18) is provided in the middle of the drying chamber (12), and the second screen (18) is located below the conical bulk material cover (16).

5. A powder drying device according to claim 1, characterized in that: A plurality of circumferentially evenly distributed striking hammers (19) are installed on the inner wall of the drying chamber (12) adjacent to the conical bulk material cover (16).

6. A powder drying device according to claim 5, characterized in that: The wall thickness of the conical bulk material cover (16) is 4-6 mm, and the conical bulk material cover (16) is made of copper.

7. A powder drying device according to claim 1, characterized in that: A flexible flame-retardant rubber sealing ring (20) is provided at the connection between the hot air duct (5) and the drying box (2).

8. A powder drying device according to claim 1, characterized in that: The bottom of the outer wall of the drying box (2) is provided with a spherical arc portion (21), and the base body (1) is provided with a supporting portion (22) that fits with the spherical arc portion (21), and the spherical arc portion (21) is rotatably installed in the supporting portion (22).

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