Stirring structure of drying machine

Abstract

The utility model provides a stirring structure of a drying machine and belongs to the technical field of drying machines. The problem that an existing stirring structure only has a stirring function is solved. The stirring structure of the drying machine comprises a plurality of wall scraping strips arranged along the inner side wall of a drying machine shell, a stirring shaft, a plurality of water inlet pipes and a plurality of water outlet pipes, a water inlet channel and a water outlet channel are formed in the stirring shaft in the axial direction of the stirring shaft, heat exchange channels are formed in the wall scraping strips, and the wall scraping strips, the water inlet pipes and the water outlet pipes are arranged in a one-to-one correspondence mode. All the water inlet pipes and all the water outlet pipes are arranged at intervals in the axial direction of the stirring shaft, the outer ends of the water inlet pipes are fixedly connected with one ends of the wall scraping strips, the inner ends of the water inlet pipes are fixedly connected with the stirring shaft, the outer ends of the water outlet pipes are fixedly connected with the other ends of the wall scraping strips, the inner ends of the water outlet pipes are fixedly connected with the stirring shaft, and the water inlet channel is communicated with the water outlet channel through the water inlet pipes, the heat exchange channel and the water outlet pipes. The stirring structure of the dryer has the advantage of improving the drying efficiency of the dryer.

Description

Technical Field

[0001] The utility model belongs to the technical field of dryers and relates to a stirring structure of a dryer. Background Art

[0002] Drying equipment is also called dryer and dryer. It is a device used for drying operation. It vaporizes the moisture in the material by heating to obtain solid material with a specified moisture content. During the use of drying equipment, a stirring structure is required to stir the material in the shell.

[0003] Existing stirring structures, for example, Chinese patent literature discloses a polyester material stirring device for scraping inner wall materials based on stirring drive [patent number: 202122646622.X; application publication number: CN216031776U], including a stirring mechanism, the stirring mechanism includes a stirring vertical rod and a three-layer combined stirring member evenly distributed from top to bottom along the stirring vertical rod, the combined stirring member includes two stirring arms and one stirring arm, the length of the stirring arm is greater than the length of the stirring arm; the scraping mechanism is evenly distributed in the circumferential direction of the stirring vertical rod, the number of the scraping mechanism is three, the scraping mechanism is located between the stirring arms in the combined stirring member and between the stirring arms and the stirring arms, the scraping mechanism includes an arc-shaped scraping strip and a number of connecting rods distributed along the trajectory line of the scraping strip, the overall arc of the scraping strip can match the inner wall curved surface of the tank body, the scraping strip is provided with an arc surface matching the inner wall of the tank body, the upper end face of the scraping strip is a plane, the lower end of the scraping strip is pointed, and there is an installation height difference between the scraping mechanisms in the longitudinal direction.

[0004] The stirring device of this structure includes a scraping mechanism, which includes a scraping strip, which is used to scrape the inner wall of the dryer housing to prevent the material from sticking to the inner wall of the housing. However, the scraping strip, the stirring vertical rod, the stirring arm and the stirring small arm of the stirring device of this structure are all solid, and the scraping strip, the stirring vertical rod, the stirring arm and the stirring small arm only play the role of stirring, and have no drying effect. Summary of the invention

[0005] The utility model aims at the above problems existing in the prior art, proposes a stirring structure of a dryer, and solves the technical problem of how to improve the drying efficiency of the dryer through the stirring structure.

[0006] The purpose of the utility model can be achieved through the following technical solutions: the stirring structure of the dryer includes a plurality of scraping strips arranged along the inner wall of the dryer shell, characterized in that it also includes a stirring shaft, a plurality of water inlet pipes and a plurality of water outlet pipes, the stirring shaft has a water inlet channel and a water outlet channel along its own axial direction, the scraping strip has a heat exchange channel, the scraping strips, the water inlet pipes and the water outlet pipes are arranged in a one-to-one correspondence, all the water inlet pipes and all the water outlet pipes are arranged at intervals along the axial direction of the stirring shaft, the outer end of the water inlet pipe is fixedly connected to one end of the scraping strip, and the inner end is fixedly connected to the stirring shaft, the outer end of the water outlet pipe is fixedly connected to the other end of the scraping strip, and the inner end is fixedly connected to the stirring shaft, the water inlet channel is connected to the water outlet channel through the water inlet pipe, the heat exchange channel and the water outlet pipe.

[0007] The water inlet pipe and the water outlet pipe play a supporting role, so that the scraper strip, the water inlet pipe, the water outlet pipe and the stirring shaft are integrated into one, the scraper strip plays the role of scraping and stirring, the water inlet pipe and the water outlet pipe have a stirring function, so that the stirring structure has a stirring function. When the stirring structure is stirring, the medium enters through the water inlet channel of the stirring shaft, and then flows to the water outlet channel through the water inlet pipe, the heat exchange channel and the water outlet pipe. The medium exchanges heat with the stirring shaft, the water inlet pipe, the water outlet pipe and the scraper strip, and then the stirring shaft, the water inlet pipe, the water outlet pipe and the scraper strip exchange heat with the material, so that the stirring structure has a heat exchange function, the heat exchange area is increased, and the drying efficiency of the dryer is improved through the stirring structure.

[0008] In the above-mentioned stirring structure of the dryer, all the scraping bars are paired in pairs and divided into several groups, and the scraping bars in the same group are symmetrically arranged with the stirring shaft as the center. This structure makes the stirring structure evenly exchange heat with the material, improves the heat exchange effect, and can mix and stir the material at different heights, reducing the overall shear force of the stirring structure.

[0009] In the above-mentioned stirring structure of the dryer, the cross section of the scraper strip is polygonal, the cross section of the heat exchange channel is polygonal, and the shape of the cross section of the scraper strip is adapted to the shape of the cross section of the heat exchange channel. This structure enables the scraper strip to have sharp edges, so that the scraper strip has a better wall scraping effect, and at the same time enables the heat exchange channel to have a larger flow cross-sectional area, improves the heat exchange effect of the scraper strip, and thus improves the drying efficiency of the dryer; when the polygon is a triangle, the scraper strip has the greatest stability, so that the overall strength of the stirring structure is large, not easy to deform, and has good stability.

[0010] In the above-mentioned stirring structure of the dryer, the water inlet pipe is perpendicular to the stirring shaft, and the water outlet pipe is perpendicular to the stirring shaft.

[0011] In the above-mentioned stirring structure of the dryer, the stirring shaft comprises a hollow outer shaft and a hollow inner shaft, the inner shaft is inserted and fixed in the outer shaft, the inner shaft has the water inlet channel, and the space between the inner shaft and the outer shaft is the water outlet channel. This structure facilitates the formation of the water inlet channel and the water outlet channel.

[0012] In the above-mentioned stirring structure of the dryer, the inner shaft and the outer shaft are coaxially arranged and reasonably arranged, so that the positions of the water inlet channel and the water outlet channel are reasonable.

[0013] In the above-mentioned stirring structure of the dryer, the stirring shaft also includes an annular upper plug, the top of the inner shaft is inserted into the upper plug, the inner ring of the upper plug is fitted and fixedly connected to the inner shaft, the outer ring of the upper plug is fitted and fixedly connected to the outer shaft, and the upper plug has at least one through hole that connects the water outlet channel with the outside. The upper plug can separate the inner shaft and the outer shaft from each other, and the upper plug can connect the inner shaft and the outer shaft, and the medium in the water outlet channel can be discharged through the through hole.

[0014] In the above-mentioned stirring structure of the dryer, the stirring shaft further includes a conical lower plug, the top portion of which is embedded between the inner shaft and the outer shaft, and the inner shaft and the outer shaft are fixedly connected via the lower plug. The lower plug cooperates with the upper plug to separate the inner shaft and the outer shaft from each other, and the lower plug cooperates with the upper plug to fix the inner shaft and the outer shaft.

[0015] In the above-mentioned stirring structure of the dryer, the stirring structure also includes a spiral bottom wall strip, a curved inlet pipe and a straight outlet pipe, the bottom wall strip has a connecting channel, the side of the lower plug has a water outlet hole connected to the water outlet channel, the axial center of the lower plug has a water inlet hole connected to the water inlet channel, the inner end of the inlet pipe is fixedly connected to the bottom end of the lower plug, and the outer end is fixedly connected to the bottom end of the bottom wall strip, the inner end of the outlet pipe is fixedly connected to the side of the lower plug, and the outer end is fixedly connected to the top of the bottom wall strip, and the water inlet channel is connected to the water outlet channel through the water inlet hole, the inlet pipe, the connecting channel, the outlet pipe and the water outlet hole. This structure enables the bottom of the stirring structure to have stirring and heat exchange functions, thereby improving the drying efficiency of the dryer.

[0016] As another case, in the stirring structure of the above-mentioned dryer, the stirring shaft includes a hollow outer shaft and a hollow inner shaft, the inner shaft is passed through and fixed in the outer shaft, the space between the inner shaft and the outer shaft is the water inlet channel, and the inner shaft has the water outlet channel.

[0017] Compared with the prior art, the stirring structure of the dryer provided by the utility model has the following advantages:

[0018] 1. The stirring structure has a stirring function to mix the materials evenly. At the same time, the stirring structure has a channel for the medium to circulate, so that the stirring structure has a heat exchange function and improves the drying efficiency of the dryer.

[0019] 2. The water inlet and outlet pipes of the mixing structure not only play a supporting role, but also have the function of circulating the medium, and have various functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the stirring structure.

[0021] Figure 2 It is a schematic diagram of the medium flow of the stirring structure.

[0022] Figure 3 This mixing structure Figure 2 Magnified view of area A.

[0023] Figure 4 This mixing structure Figure 2 Magnified view of area B.

[0024] In the figure, 1, shell; 2, scraper strip; 3, stirring shaft; 31, outer shaft; 32, inner shaft; 33, upper plug; 331, through hole; 34, lower plug; 341, water outlet hole; 342, water inlet hole; 4, water inlet pipe; 5, water outlet pipe; 6, water inlet channel; 7, water outlet channel; 8, heat exchange channel; 9, bottom wall strip; 10, inlet pipe; 11, outlet pipe; 12, connecting channel. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1 , Figure 2 As shown, the dryer includes a shell 1 and a stirring structure, the stirring structure includes a scraper bar 2, a stirring shaft 3, an inlet pipe 4, an outlet pipe 5, a bottom wall bar 9, an inlet pipe 10 and an outlet pipe 11, and the stirring shaft 3 includes an outer shaft 31, an inner shaft 32, an upper plug 33 and a lower plug 34.

[0027] The outer shaft 31 is hollow, and the inner shaft 32 is hollow. The inner shaft 32 is inserted and fixed in the outer shaft 31. The inner shaft 32 and the outer shaft 31 are coaxially arranged. In this embodiment, the inner shaft 32 has a water inlet channel 6, and the space between the inner shaft 32 and the outer shaft 31 is a water outlet channel 7. In actual production, the space between the inner shaft 32 and the outer shaft 31 is the water inlet channel 6, and the inner shaft 32 has a water outlet channel 7.

[0028] The scraper bar 2 has a heat exchange channel 8 and is arranged along the inner wall of the dryer housing 1. The scraper bar 2, the water inlet pipe 4 and the water outlet pipe 5 are arranged in a one-to-one correspondence. In this embodiment, the number of the scraper bars 2, the water inlet pipe 4 and the water outlet pipe 5 are ten, and the scraper bars 2 are paired in pairs to be divided into five groups. The scraper bars 2 in the same group are symmetrically arranged with the stirring shaft 3 as the center. In actual production, the number of the scraper bars 2, the water inlet pipe 4 and the water outlet pipe 5 can be eight or twelve, and the scraper bars 2 are paired in pairs to be divided into four or six groups.

[0029] All water inlet pipes 4 and all water outlet pipes 5 are arranged at intervals along the axial direction of the stirring shaft 3, the water inlet pipe 4 is perpendicular to the stirring shaft 3, and the water outlet pipe 5 is perpendicular to the stirring shaft 3. The outer end of the water inlet pipe 4 is fixedly connected to one end of the scraping strip 2, and the inner end is fixedly connected to the stirring shaft 3, the outer end of the water outlet pipe 5 is fixedly connected to the other end of the scraping strip 2, and the inner end is fixedly connected to the stirring shaft 3, and the water inlet channel 6 is connected to the water outlet channel 7 through the water inlet pipe 4, the heat exchange channel 8 and the water outlet pipe 5.

[0030] In this embodiment, the cross-section of the scraper strip 2 is triangular, and the cross-section of the heat exchange channel 8 is triangular. The shape of the cross-section of the scraper strip 2 is compatible with the shape of the cross-section of the heat exchange channel 8. In actual production, the cross-section of the scraper strip 2 and the cross-section of the heat exchange channel 8 can both be quadrilateral or pentagonal.

[0031] like Figure 3 , Figure 4 As shown, the stirring shaft 3 also includes an annular upper plug 33 and a conical lower plug 34. The top of the inner shaft 32 is inserted into the upper plug 33. The inner ring of the upper plug 33 is fitted and fixedly connected to the inner shaft 32. The outer ring of the upper plug 33 is fitted and fixedly connected to the outer shaft 31. The top part of the lower plug 34 is embedded between the inner shaft 32 and the outer shaft 31. The inner shaft 32 and the outer shaft 31 are fixedly connected through the lower plug 34. In this embodiment, the upper plug 33 has two through holes 331 that connect the water outlet channel 7 with the outside. In actual production, the number of through holes 331 can be one or four.

[0032] The bottom wall strip 9 is spiral, the inlet pipe 10 is curved, the outlet pipe 11 is straight, the bottom wall strip 9 has a connecting channel 12, the side of the lower plug 34 has a water outlet hole 341 connected to the water outlet channel 7, the axial center of the lower plug 34 has a water inlet hole 342 connected to the water inlet channel 6, the inner end of the inlet pipe 10 is fixedly connected to the bottom end of the lower plug 34, and the outer end is fixedly connected to the bottom end of the bottom wall strip 9, the inner end of the outlet pipe 11 is fixedly connected to the side of the lower plug 34, and the outer end is fixedly connected to the top of the bottom wall strip 9, and the water inlet channel 6 is connected to the water outlet channel 7 through the water inlet hole 342, the inlet pipe 10, the connecting channel 12, the outlet pipe 11 and the water outlet hole 341.

[0033] During operation, the stirring shaft 3 rotates, thereby rotating the water inlet pipe 4, the water outlet pipe 5 and the scraper strip 2, which plays a stirring role. The medium enters through the water inlet channel 6 in the inner shaft 32, then flows to the water outlet channel 7 through the water inlet pipe 4, the heat exchange channel 8 and the water outlet pipe 5, and then is discharged through the through hole 331 of the upper plug 33, completing a cycle. Part of the medium flows to the water outlet channel 7 again through the water inlet hole 342, the inlet pipe 10, the connecting channel 12, the outlet pipe 11 and the water outlet hole 341, and then is discharged through the through hole 331 of the upper plug 33, completing a cycle.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although this article uses more terms such as shell 1, scraper strip 2, stirring shaft 3, outer shaft 31, inner shaft 32, upper plug 33, through hole 331, lower plug 34, water outlet hole 341, water inlet hole 342, water inlet pipe 4, water outlet pipe 5, water inlet channel 6, water outlet channel 7, heat exchange channel 8, bottom wall strip 9, inlet pipe 10, outlet pipe 11, connecting channel 12, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A stirring structure of a dryer, comprising a plurality of scraping strips (2) arranged along the inner wall of a dryer housing (1), characterized in that: It also comprises a stirring shaft (3), a plurality of water inlet pipes (4) and a plurality of water outlet pipes (5); the stirring shaft (3) has a water inlet channel (6) and a water outlet channel (7) along its own axial direction; the scraper strip (2) has a heat exchange channel (8); the scraper strip (2), the water inlet pipe (4) and the water outlet pipe (5) are arranged in a one-to-one correspondence; all the water inlet pipes (4) and all the water outlet pipes (5) are arranged at intervals along the axial direction of the stirring shaft (3); the outer end of the water inlet pipe (4) is fixedly connected to one end of the scraper strip (2), and the inner end is fixedly connected to the stirring shaft (3); the outer end of the water outlet pipe (5) is fixedly connected to the other end of the scraper strip (2), and the inner end is fixedly connected to the stirring shaft (3); the water inlet channel (6) is connected to the water outlet channel (7) through the water inlet pipe (4), the heat exchange channel (8) and the water outlet pipe (5).

2. The stirring structure of the dryer according to claim 1, characterized in that: All the scraping strips (2) are paired in pairs and divided into a plurality of groups, and the scraping strips (2) in the same group are symmetrically arranged with the stirring shaft (3) as the center.

3. The stirring structure of the dryer according to claim 1, characterized in that: The cross section of the scraper strip (2) is polygonal, and the cross section of the heat exchange channel (8) is polygonal, and the shape of the cross section of the scraper strip (2) is compatible with the shape of the cross section of the heat exchange channel (8).

4. The stirring structure of the dryer according to claim 1, 2 or 3, characterized in that: The water inlet pipe (4) is perpendicular to the stirring shaft (3), and the water outlet pipe (5) is perpendicular to the stirring shaft (3).

5. The stirring structure of the dryer according to claim 1, 2 or 3, characterized in that: The stirring shaft (3) comprises a hollow outer shaft (31) and a hollow inner shaft (32); the inner shaft (32) is inserted and fixed in the outer shaft (31); the inner shaft (32) has the water inlet channel (6); and the space between the inner shaft (32) and the outer shaft (31) is the water outlet channel (7).

6. The stirring structure of the dryer according to claim 5, characterized in that: The inner shaft (32) and the outer shaft (31) are coaxially arranged.

7. The stirring structure of the dryer according to claim 5, characterized in that: The stirring shaft (3) further comprises an annular upper plug (33), the top of the inner shaft (32) is inserted into the upper plug (33), the inner ring of the upper plug (33) is fitted and fixedly connected to the inner shaft (32), the outer ring of the upper plug (33) is fitted and fixedly connected to the outer shaft (31), and the upper plug (33) has at least one through hole (331) for connecting the water outlet channel (7) with the outside.

8. The stirring structure of the dryer according to claim 5, characterized in that: The stirring shaft (3) further comprises a conical lower plug (34), the top portion of which is embedded between the inner shaft (32) and the outer shaft (31), and the inner shaft (32) and the outer shaft (31) are fixedly connected via the lower plug (34).

9. The stirring structure of the dryer according to claim 8, characterized in that: The stirring structure further comprises a spiral bottom wall strip (9), a curved inlet pipe (10) and a straight outlet pipe (11), wherein the bottom wall strip (9) has a connecting passage (12), the side of the lower plug (34) has a water outlet hole (341) connected to the water outlet passage (7), the axial center of the lower plug (34) has a water inlet hole (342) connected to the water inlet passage (6), the inner end of the inlet pipe (10) is connected to the inner end of the inlet pipe (11), and the inner end of the inlet pipe (10) is connected to the inner end of the inlet pipe (11). The bottom end of the lower plug (34) is fixedly connected, and the outer end is fixedly connected to the bottom end of the bottom wall strip (9); the inner end of the outlet pipe (11) is fixedly connected to the side of the lower plug (34), and the outer end is fixedly connected to the top of the bottom wall strip (9); the water inlet channel (6) is connected to the water outlet channel (7) through the water inlet hole (342), the inlet pipe (10), the connecting channel (12), the outlet pipe (11) and the water outlet hole (341).

10. The stirring structure of the dryer according to claim 1, 2 or 3, characterized in that: The stirring shaft (3) comprises a hollow outer shaft (31) and a hollow inner shaft (32); the inner shaft (32) is inserted and fixed in the outer shaft (31); the space between the inner shaft (32) and the outer shaft (31) is the water inlet channel (6); and the inner shaft (32) has the water outlet channel (7).

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