Corner-shaped box of mixed-flow drying machine and drying box body of corner-shaped box

Abstract

The utility model relates to the field of mixed-flow drying machines, and discloses an angular box of a mixed-flow drying machine and a drying box body of the angular box. The horn box comprises a box top wall extending from a first end to a second end of the horn box; the box side walls are respectively arranged at the bottom edges of the box top walls; the box side wall extends from the first end to the second end, and the height of the box side wall is gradually reduced to zero. The angular box is arranged in the drying box body. Through the box side walls with the gradually-changed heights on the angular box, when passing through the second end of the angular box, hot air can be diffused through the two sides and the bottom of the angular box at the same time, blocking of the angular box to hot air flowing is reduced, the hot air diffusion speed is increased, and the hot air diffusion path is increased; therefore, the problem that the angular box of the mixed-flow drying machine is poor in hot air diffusion is solved, and the effect of improving the drying rate and drying uniformity of the hot air on the materials is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mixed flow dryers, and particularly relates to an angular box of a mixed flow dryer and a drying box body thereof. BACKGROUND

[0002] The mixed flow dryer is widely used in grain drying and mainly consists of an elevator, a hot air system, a drying tower and a discharging device. The drying tower mainly comprises a storage section, a drying section, a recovery section, a cooling section and a discharging section which are stacked and communicated along the height direction. A plurality of angular boxes are generally staggered arranged in the drying section of the drying tower. The angular box is generally a long strip box body with a triangular or pentagonal cross section, and its two ends and bottom are open. The angular box is divided into an air inlet angular box and an air outlet angular box.

[0003] During operation, the granular material to be dried is transported to the storage section of the drying tower by the elevator; the material slowly flows from top to bottom to the drying section under the action of gravity, and the material is accumulated on the outside of the angular box; the hot air system provides hot air into the drying tower, the hot air enters from the end of the air inlet angular box, passes through the bottom of the air inlet angular box to the material layer, then enters the inside of the air outlet angular box from the bottom of the air outlet angular box, and exits from the end of the air outlet angular box; the hot air has multiple flow modes such as co-current, counter-current and cross-current in the material layer, so as to realize mixed flow heating and drying of the material; the dried material continues to flow downward to the recovery section, so that the temperature and moisture of the inner and outer layers of the material tend to be balanced; after the material is recovered, it enters the cooling section for cooling, and when the temperature of the material is reduced to the storage temperature, the material is discharged through the discharging device arranged in the discharging section, and the drying process of the material is completed.

[0004] The shape of the angular box directly affects the flow mode of the hot air during drying, and has a great influence on the drying performance of the mixed flow dryer and the quality of the grain. The existing technology, such as the angular box with a pentagonal cross section disclosed in Chinese patent CN201571453U. Although the side wall of the angular box can reduce the entry of the downward flowing material into the inside of the angular box, the side wall of the angular box also blocks the flow of the hot air, so that the hot air cannot timely diffuse through the two sides of the angular box, and the drying rate and drying uniformity of the material by the hot air are reduced. Content of the utility model

[0005] The purpose of the present application is to provide an angular box of a mixed flow dryer and a drying box body thereof, which is used to solve the problem of poor diffusion of the hot air by the angular box of the mixed flow dryer, so as to improve the drying rate and drying uniformity of the material by the hot air.

[0006] In order to achieve the above purpose, the first aspect of the present application provides an angular box of a mixed flow dryer, which comprises:

[0007] a box top wall extending from the first end to the second end of the angular box;

[0008] a box side wall disposed at the bottom edge of the box top wall, the box side wall extending from the first end to the second end, and the height of the box side wall gradually decreasing to zero.

[0009] In some embodiments, the length of the box side wall is 1 / 2 to 3 / 4 of the length of the box top wall.

[0010] In some embodiments, the box top wall extends from the first end to the second end, and the cross section of the box top wall gradually decreases proportionally.

[0011] In some embodiments, the box side wall is bent towards the inside of the corner-shaped box, and the box side wall and the vertical direction of the corner-shaped box form a side wall included angle B.

[0012] In some embodiments, the corner-shaped box further comprises a deflector disposed at the first end, and the deflector is used to partially close the bottom opening of the corner-shaped box.

[0013] In some embodiments, the deflector is arranged between the box side walls on both sides in a downward inclination, and the deflector and the horizontal direction of the corner-shaped box form a deflector included angle C.

[0014] In some embodiments, the deflector is provided with a connecting edge on both sides, the cross section of the deflector is in the shape of "C", and the connecting edge is threadedly fastened with the box side wall.

[0015] In some embodiments, the corner-shaped box further comprises a bending edge disposed at the first end and / or the second end, and the bending edge is used to fix the corner-shaped box on the installation plane.

[0016] In some embodiments, the corner-shaped box further comprises a reinforcing rib disposed at the top corner of the box top wall, and the reinforcing rib transversely connects the two sides of the box top wall.

[0017] The second aspect of the present application provides a drying box body of a mixed flow dryer, and the inside of the drying box body is provided with the above-mentioned corner-shaped box.

[0018] In some embodiments, the cavity of the drying box body is provided with a drying section formed by the corner-shaped box and a recovery section formed by a reserved area along the vertical direction, and the recovery section is located between two drying sections.

[0019] In some embodiments, the drying box body is provided with an air outlet side for communicating with an air outlet, and a plurality of air outlets are arranged on the wall surface of the air outlet side at intervals, and the caliber of the air outlet gradually decreases as it approaches the air outlet.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] The application gradually changes the height of the box side wall of the corner-shaped box, so that the hot air can diffuse through the two sides and the bottom of the corner-shaped box when passing through the second end of the corner-shaped box, reduces the blockage of the corner-shaped box to the flow of hot air, increases the diffusion speed and diffusion path of the hot air, and solves the problem of poor diffusion of hot air caused by the corner-shaped box of the mixed-flow dryer, and improves the drying rate and drying uniformity of the hot air on the material.

[0022] Other features and advantages of the embodiments of the application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are included to provide a further understanding of the embodiments of the application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the embodiments of the application, but do not constitute a limitation on the embodiments of the application. For those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor. In the drawings:

[0024] Fig. 1 It is a structural view of the corner-shaped box of the specific embodiments of the application.

[0025] Fig. 2 It is a side view of the first end of the corner-shaped box of the specific embodiments of the application.

[0026] Fig. 3 It is a longitudinal sectional view of the corner-shaped box of the specific embodiments of the application.

[0027] Fig. 4 It is a front view of the air inlet side of the drying box body of the specific embodiments of the application, and the arrow in the figure is the flow direction of the material.

[0028] Fig. 5 It is a front view of the air outlet side of the drying box body of the specific embodiments of the application, and the arrow in the figure is the flow direction of the material.

[0029] Fig. 6 It is a transverse sectional view of the drying box body of the specific embodiments of the application.

[0030] Fig. 7 It is a longitudinal sectional view of the drying box body of the specific embodiments of the application.

[0031] Explanation of reference signs:

[0032] 11 box top wall 12 box side wall

[0033] 13 first end 14 second end

[0034] 15 air guide plate 16 bent edge

[0035] 21 drying section 22 tempering section

[0036] 31 air inlet angle box 32 air outlet angle box

[0037] 41 air inlet baffle 411 air inlet

[0038] 42 air outlet baffle 421 air outlet

[0039] 43 side baffle 5 air outlet DETAILED DESCRIPTION

[0040] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0041] As shown in the drawings, an angle box of a mixed flow dryer comprises: Figs. 1 to 3

[0042] a box top wall 11 extending from a first end 13 to a second end 14 of the angle box;

[0043] a box side wall 12 arranged at the bottom edge of the box top wall 11, respectively, and extending from the first end 13 to the second end 14, the height of the box side wall 12 gradually decreasing to zero.

[0044] In the present application, the angle box is generally a long strip-shaped box body, and the two ends thereof are a first end 13 and a second end 14, respectively. The two ends of the angle box are through and the bottom is open. The first end 13 of the angle box is provided with a box side wall 12, and the cross section thereof can be a pentagon. The second end 14 of the angle box cancels the box side wall 12, and the cross section thereof is correspondingly a triangle. The angle box is installed in the drying section 21 of the mixed flow dryer, and is divided into an air inlet angle box 31 and an air outlet angle box 32. In operation, hot air enters the inside of the air inlet angle box 31 from the first end 13 thereof, diffuses downward through the bottom of the air inlet angle box 31 into the material layer. Part of the hot air flows to the second end 14 of the air inlet angle box 31, and diffuses into the material layer through the two sides and the bottom of the air inlet angle box 31 at the same time. The hot air passes through the material layer for mixed flow drying. The hot air diffuses upward through the bottom of the air outlet angle box 32 into the inside thereof, and part of the hot air diffuses into the inside of the air outlet angle box 32 through the two sides of the air outlet angle box 32 at the same time, and finally exits from the first end 13 of the air outlet angle box 32. Since the second end 14 of the angle box cancels the box side wall 12, the hot air can diffuse through the two sides and the bottom of the angle box at the same time when passing through the second end 14 of the angle box, which reduces the obstruction to the flow of the hot air, increases the diffusion speed and diffusion path of the hot air, and thus solves the problem of poor diffusion of the hot air in the angle box of the mixed flow dryer, and achieves the effect of improving the drying rate and drying uniformity of the material by the hot air. ​

[0045] Specifically, the length of the box side wall 12 is 1 / 2 to 3 / 4 of the length of the box top wall 11. That is, when the box side wall 12 extends from the first end 13 to the second end 14 to a position of 1 / 2 to 3 / 4 of the length of the box top wall 11, the height of the box side wall 12 is reduced to zero. When the length of the box side wall 12 is too short, the material flowing downward in the drying section 21 is easy to enter the interior of the angular box through the two sides of the angular box, blocking the hot air flowing in the interior of the angular box, so that the material layer near the second end 14 of the angular box cannot be effectively mixed and dried, and the hot air cannot timely leave the material layer, which is easy to cause the drying degree of the material at different positions to be uneven. When the length of the box side wall 12 is too long, only a small amount of hot air can diffuse through the two sides and the bottom of the angular box when passing through the second end 14 of the angular box, and the angular box has poor effect on improving the diffusion capacity of the hot air.

[0046] Specifically, the box top wall 11 extends from the first end 13 to the second end 14, and the cross section of the box top wall 11 gradually decreases in proportion. The first end 13 of the angular box is the air inlet side and the air outlet side of the drying section 21, and the second end 14 of the angular box is away from the first end 13, and the flow rate of the hot air diffusing to the second end 14 naturally decreases. The gradually decreasing cross section of the box top wall 11 can significantly improve the flow rate of the hot air at the second end 14, so that the hot air can be uniformly and efficiently mixed and dried in the material layer.

[0047] Specifically, the box side wall 12 is bent towards the interior of the angular box, and the box side wall 12 and the vertical direction of the angular box form a side wall included angle B. Compared with the vertically downward box side wall 12, the box side wall 12 bent towards the interior of the angular box can form a slope protection effect on the material stacked outside the box side wall 12, further preventing the material from entering the interior of the angular box, and avoiding the material blocking the hot air flowing in the interior of the angular box.

[0048] In some embodiments, the angular box is mainly formed by bending sheet metal. The box top wall 11 includes a first face and a second face that are top edge coincident, and the first face and the second face have a top wall included angle A. The top wall included angle A is between 45° and 90°, and is generally selected to be 60°. The top edge of the box top wall 11 is inclined downward, and the vertex at the first end 13 is higher than the vertex at the second end 14, so as to guide the hot air to enter from the first end 13 and then gradually diffuse downward, reducing the loss of the hot air. The bottom edges of the first face and the second face are respectively symmetrically provided with the box side wall 12. The side wall included angle B of the box side wall 12 is between 15° and 45°, and is generally selected to be 30°. The box side wall 12 extends from the first end 13 to the second end 14 to a position of 2 / 3 of the length of the box top wall 11. The cross section of the first end 13 of the angular box is larger than the cross section of the second end 14.

[0049] As Figs. 1 to 3As shown, specifically, the corner-shaped box further comprises a baffle 15 arranged at the first end 13, which is used to partially close the bottom opening of the corner-shaped box. When the material flows downward along the outer side of the corner-shaped box, the baffle 15 can block the material from splashing outward from the first end 13 to the drying section 21, thereby reducing the loss of material; at the same time, the baffle 15 can also prevent the material entering the interior of the corner-shaped box from accumulating at the first end 13, thereby avoiding the material from blocking the flow of hot air. In addition, when the hot air enters from the first end 13 of the corner-shaped box, the baffle 15 can guide the hot air to diffuse downward after entering the corner-shaped box for a distance, thereby avoiding the material near the bottom of the first end 13 from being excessively dried.

[0050] Further, the baffle 15 is arranged obliquely downward between the side walls 12 on both sides, and the baffle 15 has a baffle included angle C with the horizontal direction of the corner-shaped box. The side of the baffle 15 close to the first end 13 is higher than the side away from the first end 13. Compared with the horizontal arrangement, the obliquely downward arrangement of the baffle 15 can better prevent the material from splashing outward from the first end 13 and prevent the material from accumulating at the first end 13.

[0051] Further, the baffle 15 is arranged obliquely downward between the side walls 12 on both sides, and the baffle 15 has a baffle included angle C with the horizontal direction of the corner-shaped box. The side of the baffle 15 close to the first end 13 is higher than the side away from the first end 13. Compared with the horizontal arrangement, the obliquely downward arrangement of the baffle 15 can better prevent the material from splashing outward from the first end 13 and prevent the material from accumulating at the first end 13.

[0052] In some embodiments, the baffle 15 is formed by a sheet metal bending process. The shape of the baffle 15 is adapted to the bottom of the first end 13 of the corner-shaped box, and the baffle 15 can be fitted between the side walls 12 on both sides. The connecting edges of the baffle 15 and the side walls 12 are provided with mounting holes, and a bolt assembly is used for fastening. The length of the baffle 15 is 50 mm. The baffle included angle C is 15° to 45°, and is generally 30°.

[0053] Specifically, the corner-shaped box further comprises a bent edge 16 arranged at the first end 13 and / or the second end 14, which is used to fix the corner-shaped box to the mounting plane.

[0054] In some embodiments, the bent edge 16 is bent 90° from the edge of the top wall 11 or the side wall 12. The bent edge 16 is provided with a mounting hole. When the corner-shaped box is mounted, the bent edges 16 at the first end 13 and the second end 14 are attached to the vertical mounting plane, and fastening is completed by a threaded member.

[0055] Specifically (not shown in the figure), the corner box also includes reinforcing ribs at the top corners of the top wall 11, with the reinforcing ribs laterally connecting the two sides of the top wall 11. When material falls from top to bottom into the corner box, it impacts the top wall 11. The reinforcing ribs enhance the structural strength of the top wall 11, prevent deformation of the corner box, and increase its service life.

[0056] In some embodiments, the reinforcing ribs are elongated strips welded to the top corners of the top wall 11 of the box, and respectively connecting the first and second surfaces of the top wall 11. The reinforcing ribs extend from the first end 13 to the second end 14 of the corner box. The corner box with reinforcing ribs is typically disposed on the upper layer of the drying section 21.

[0057] like Figs. 4 to 7 As shown, a drying chamber of a mixed-flow dryer has the aforementioned angular box installed inside.

[0058] In some embodiments, the drying chamber is a through-type chamber, serving as part of the drying tower of a mixed-flow dryer. The drying chamber includes an inlet enclosure 41, an outlet enclosure 42, and side enclosures 43, wherein the inlet enclosure 41 and the outlet enclosure 42 are arranged opposite to each other. One side of the inlet enclosure 41 is the air inlet side of the drying chamber, and one side of the outlet enclosure 42 is the air outlet side of the drying chamber.

[0059] In some embodiments, the corner box is divided into an air inlet corner box 31 and an air outlet corner box 32. The first end 13 of the air inlet corner box 31 is fastened to the air inlet enclosure 41, and the second end 14 is fastened to the air outlet enclosure 42. The first end 13 of the air inlet corner box 31 connects to the air inlet 411 on the air inlet enclosure 41, and the second end 14 of the air inlet corner box 31 is blocked by the air outlet enclosure 42. The first end 13 of the air outlet corner box 32 is fastened to the air outlet enclosure 42, and the second end 14 is fastened to the air inlet enclosure 41. The first end 13 of the air outlet corner box 32 connects to the air outlet 421 on the air outlet enclosure 42, and the second end 14 of the air outlet corner box 32 is blocked by the air inlet enclosure 41. The air inlet corner box 31 and the air outlet corner box 32 are arranged alternately along the horizontal and vertical sides of the drying chamber, respectively. The air inlet corner box 31 and the air outlet corner box 32 are arranged in layers and staggered, with the air inlet corner box 31 located on the top layer.

[0060] In some embodiments, granular grains fall from the top of the drying chamber and flow in a curved, staggered manner from top to bottom through the gaps between adjacent angled boxes. Hot air enters the grain layer sequentially through the air inlet 411 of the air inlet enclosure 41, the first end 13 of the air inlet angled box 31, and the bottom of the air inlet angled box 31; the hot air mixes and diffuses within the grain layer and comes into direct contact with the grain, carrying away the moisture released by the evaporation of the grain; the hot air leaves the grain layer sequentially through the bottom of the air outlet angled box 32, the first end 13 of the air outlet angled box 32, and the air outlet 421 of the air outlet enclosure 42.

[0061] Specifically, the cavity of the drying box is provided with drying sections 21 formed by the angle boxes and recovery sections 22 formed by the reserved areas in the vertical direction, and the recovery sections 22 are located between the two drying sections 21. In operation, the material flows into the recovery section 22 after being dried by mixing flow for the first time in the upper drying section 21; the recovery section 22 is not provided with the angle boxes, and the mixing flow drying of the material by the hot air is suspended; the material enters the lower drying section 21 for mixing flow drying for the second time after recovery. The provision of the recovery section 22 enables the material to be dried by mixing flow for two times with an interval, so that the moisture inside the material can be naturally conducted to the surface of the material, the shrinkage and expansion balance between the inside and the surface of the material is maintained, and the burst rate of the material is reduced, and the drying quality of the material is improved.

[0062] Specifically, the drying box is provided with an air outlet side for communicating with the air outlet 5, and a plurality of air outlets 421 are arranged on the wall surface of the air outlet side at intervals, and the diameters of the air outlets 421 gradually decrease as they approach the air outlet 5. The air outlet 5 is usually provided with a fan, and the fan generates negative pressure to discharge the hot air in the drying box from the air outlet side. The diameters of the air outlets 421 of the air outlet side are determined according to the positions of the air outlets 421 relative to the air outlet 5, and the diameters of the air outlets 421 closer to the air outlet 5 are smaller, so as to prevent the material from being sucked out by the fan and reduce the loss of the material.

[0063] In some embodiments, the wall surface of the air outlet side is an air outlet surrounding plate 42. The air outlet 5 and the fan of the mixing flow dryer are arranged in the lower part of the drying box. The diameters of the air outlets 421 on the air outlet surrounding plate 42 decrease in a stepped manner from top to bottom.

[0064] In the description of the present application, it should be understood that the terms "first", "second" are used only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0065] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0066] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0067] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A corner box of a mixed flow dryer, characterized by The angular box comprises: a box top wall (11) extending from a first end (13) to a second end (14) of the angular box; a box side wall (12) arranged at the bottom edge of the box top wall (11) respectively; the box side wall (12) extends from the first end (13) to the second end (14), and the height of the box side wall (12) gradually decreases to zero; the box side wall (12) is bent towards the inside of the angular box, and the box side wall (12) and the vertical direction of the angular box form a side wall included angle B.

2. The corner cassette of claim 1, wherein, The length of the box side wall (12) is 1 / 2 to 3 / 4 of the length of the box top wall (11).

3. The corner cassette of claim 1, wherein, The box top wall (11) extends from the first end (13) to the second end (14), and the cross section of the box top wall (11) gradually decreases in proportion.

4. The corner mailbox of claim 1, wherein, The angular box further comprises a deflector (15) arranged at the first end (13), which is used to partially close the bottom opening of the angular box.

5. The corner cassette of claim 4, wherein, The deflector (15) is arranged between the box side walls (12) on both sides and inclined downward, and the deflector (15) and the horizontal direction of the angular box form a deflector included angle C.

6. The corner cassette of claim 4, wherein, Both sides of the deflector (15) are provided with connecting edges, the cross section of the deflector (15) is "C" type, and the connecting edges are threadedly fastened with the box side walls (12).

7. The corner box according to any one of claims 1 to 6, characterized in that The angular box further comprises a bending edge (16) arranged at the first end (13) and / or the second end (14), which is used to fix the angular box on the installation plane.

8. The corner box according to any one of claims 1 to 6, characterized in that The angular box further comprises a reinforcing rib arranged at the top corner of the box top wall (11), which transversely connects both sides of the box top wall (11).

9. A drying cabinet of a mixed flow dryer, characterized by The inside of the drying box body is provided with the angular box according to any one of claims 1 to 8.

10. The drying cabinet of claim 9, wherein, The cavity of the drying box body is provided with drying sections (21) formed by the angular box and recovery sections (22) formed by the reserved area along the vertical direction, and the recovery sections (22) are located between two drying sections (21).

11. The drying cabinet of claim 9, wherein, The drying box body is provided with an air outlet side for communicating with the air outlet (5), and a plurality of air outlets (421) are arranged on the wall surface of the air outlet side at intervals, and the caliber of the air outlet (421) gradually decreases as it approaches the air outlet (5).

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