Single-cone drying machine

Abstract

The utility model discloses a single-cone drying machine, which relates to the technical field of washing, drying and mixing equipment and comprises a machine body, a stirring shaft is arranged in the machine body, the upper end of the stirring shaft extends out of the machine body and is connected with a driving device, the surface of the stirring shaft is connected with a stirring blade assembly, and the stirring blade assembly comprises a plurality of supporting rods and stirring blades. The length of the supporting rods is gradually reduced from top to bottom, the supporting rods are distributed in an inverted cone shape, the stirring blades are connected with the stirring shaft through the supporting rods, and the stirring blades comprise a helical ribbon type blade and at least two scraper blades distributed from top to bottom. The helical ribbon blades and the scraper blades are spirally arranged by taking the stirring shaft as a center; and the helical direction of the helical ribbon blades is opposite to that of the scraper blades. A double-type stirring blade structure is adopted, double-helix stirring in opposite directions is formed, the stability of the gravity center of the stirring device is guaranteed through generated bidirectional axial force, the durability of parts such as a mechanical seal is improved, the advantages of the double-type stirring blades are combined, and the stirring and mixing effect is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of washing, drying and mixing equipment, in particular to a single cone drying machine. Background Art

[0002] The single cone vacuum dryer is also called a single cone vacuum dryer. It is a multifunctional fully enclosed vertical vacuum drying equipment that integrates drying, crushing and powder mixing. It is composed of a single cone and a vacuum cylinder. Due to its large capacity and small size, its drying efficiency is 3 to 5 times higher than that of a double cone rotary vacuum dryer of the same specification. It is an economical and practical multifunctional vacuum drying equipment. It is mainly used for powder drying in the pharmaceutical, chemical, pesticide, food and other industries to achieve closed continuous operation throughout the entire process. The existing single cone dryers include single screw dryers, double screw dryers and shovel dryers. The inventor found that the single screw dryer has a single spiral structure, and there are a lot of gaps in the pitch, so the stirring and mixing effect is not good. In addition, this form has problems such as the center of gravity of the stirring device is offset, the stability is not strong, and the process time of the material is affected.

[0003] Therefore, how to solve the problems in the prior art of poor stirring effect of single screw belt dryer, weak stability of stirring device, and affecting material process time has become an important technical problem to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a single cone dryer.

[0005] The technical solution adopted by the utility model is as follows: a single-cone dryer, comprising a body, a stirring shaft is arranged inside the body, the upper end of the stirring shaft extends out of the body and is connected to a driving device, a stirring blade assembly is connected to the surface of the stirring shaft, the body comprises a top cover, an upper body and a lower body, the upper body is cylindrical, the lower body is inverted cone, the stirring blade assembly comprises a plurality of support rods and stirring blades, the support rods are perpendicular to the stirring shaft, the length of the support rods gradually decreases from top to bottom and is distributed in an inverted cone shape, the stirring blades are connected to the stirring shaft through the support rods, the stirring blades comprise a spiral ribbon blade and at least two scraper blades distributed from top to bottom, the spiral ribbon blade and the scraper blade are spirally arranged with the stirring shaft as the center and the spiral direction of the spiral ribbon blade is opposite to the spiral direction of the scraper blade.

[0006] Preferably, the support rod is divided into a first support rod for connecting the spiral blade and the stirring shaft and a second support rod for connecting the scraper blade and the stirring shaft. The length of the first support rod is inconsistent with the length of the second support rod, so that the spiral blade and the scraper blade have an inner and outer double helix structure.

[0007] Preferably, the second support rod is arranged close to the first support rod.

[0008] Preferably, the spiral ribbon blades or scraper blades are clearance-matched with the inner wall of the machine body.

[0009] Preferably, the spiral ribbon blade is a continuous inclined curved surface, one end of which is connected to the upper end of the stirring shaft and is lower than the highest point of the upper body, and the other end is connected to the lower end of the stirring shaft and is lower than the clearance between the lower end surface of the stirring shaft and the inner wall of the bottom of the body.

[0010] Preferably, the side of the spiral ribbon blade facing the rotation direction of the stirring shaft is an inclined surface, and the scraper blade forms an angle of 45 degrees with the second support rod.

[0011] Preferably, a heating jacket is provided on the outside of the machine body, and a heat-insulating layer is provided on the outside of the heating jacket.

[0012] Preferably, the heating jacket is a spiral flow channel, the lower end of the spiral flow channel is a water inlet, and the upper end is a water outlet.

[0013] Preferably, the volume of the lower half of the stirring shaft gradually decreases and the lower end surface is a smooth curved surface.

[0014] Preferably, the support rod is detachably connected to the stirring shaft and the stirring blade.

[0015] The beneficial effects of the utility model are as follows: a double-type stirring blade structure is adopted, and the spiral ribbon blades and the scraper blades are used in conjunction with each other to form a double-helix stirring in opposite directions. The generated bidirectional axial force ensures the stability of the center of gravity of the stirring device and improves the durability of components such as the machine seal. Combined with the advantages of the up and down circulation of the spiral ribbon blades and the scraper blades that can crush larger materials, the stirring and mixing effect is effectively improved, the friction and impact force of the materials on the stirring blades during stirring are reduced, the stirring blades are less worn, the work efficiency is high, and the production cost is reduced. At the same time, the inverted cone body makes it easier for materials to fall and less likely to get blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0017] Figure 1 This is a front view of a single cone dryer of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the stirring blade in the utility model;

[0019] In the figure, 1-machine body, 101-top cover, 102-upper machine body, 103-lower machine body, 2-agitation shaft, 3-support rod, 301-first support rod, 302-second support rod, 4-spiral blade, 5-scraper blade, 6-heating jacket, 7-insulation layer, 8-water inlet, 9-water outlet. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0021] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0022] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0023] like Figure 1 to Figure 2 As shown, it is an embodiment of the utility model, a single cone dryer, including a body 1, a stirring shaft 2 is arranged inside the body 1, the upper end of the stirring shaft 2 extends out of the body 1 and is connected to a driving device, a stirring blade assembly is connected to the surface of the stirring shaft 2, the body includes a top cover 101, an upper body 102 and a lower body 103, the upper body 102 is cylindrical, the lower body 103 is inverted cone, the stirring blade assembly includes a plurality of support rods 3 and stirring blades, the support rods 3 are perpendicular to the stirring shaft 2, the length of the support rods 3 gradually decreases from top to bottom, and is distributed in an inverted cone shape, the stirring blades are connected to the stirring shaft 2 through the support rods 3, the stirring blades include a spiral ribbon blade 4 and at least two scraper blades 5 distributed from top to bottom, the spiral ribbon blade 4 and the scraper blade 5 are spirally arranged with the stirring shaft 2 as the center, and the spiral direction of the spiral ribbon blade 4 is opposite to the spiral direction of the scraper blade 5.

[0024] Through the above settings, a double-type stirring blade structure is adopted, and the spiral blade 4 and the scraper blade 5 are used in conjunction with each other. The scraper blade 5 crushes the material, and the material rises along the spiral belt, and then falls at the highest point. When it reaches the bottom position of the equipment, it is lifted up by the spiral belt again. This process is repeated. The reverse spiral formed by the spiral blade 4 and the scraper blade 5 can achieve the purpose of full stirring, and the generated bidirectional axial force ensures the stability of the center of gravity of the stirring device, improves the durability of components such as the machine seal, and the spiral blade can minimize the friction and impact force between the material and the material, so that the material has both horizontal and vertical movement, reducing the friction and impact force of the material on the stirring blade during stirring, making the stirring blade less worn, high working efficiency, and reducing production costs. Moreover, the turbine resistance generated by the rotation of the stirring blade with the inverted cone structure is smaller than that of the conventional cylindrical turbine, which reduces the power requirements for the equipment, reduces energy consumption, and shortens the process time. The body has an inverted cone structure, and the inclined inner wall is more conducive to the falling of the material, which is convenient for discharging.

[0025] In a preferred embodiment, the support rod 3 is divided into a first support rod 301 for connecting the helical blade 4 and the stirring shaft 2 and a second support rod 302 for connecting the scraper blade 5 and the stirring shaft 2. The length of the first support rod 301 is inconsistent with the length of the second support rod 302, so that the helical blade 4 and the scraper blade 5 have an inner and outer double helix structure. In this way, the helix formed by the helical blade 4 and the scraper blade 5 is an inner and outer double-layer helix, which can ensure sufficient stirring of the material.

[0026] In a preferred embodiment, the second support rod 302 is disposed close to the first support rod 301. It can be understood that the first support rod 301 and the second support rod 302 are respectively connected to the spiral blade 4 and the scraper blade 5 to rotate to form a double helix to generate a bidirectional axial force, and the heights of the two support rods are close to the same, so that the axial force distribution is more uniform, which is conducive to maintaining the stability of the center of gravity of the dryer.

[0027] In a preferred embodiment, the spiral ribbon blade 4 or the scraper blade 5 is in clearance fit with the inner wall of the machine body 1. In this way, the stirring blade is close to the inner wall of the machine body 1, so that the stirring area is wider and the stirring is more sufficient.

[0028] In a preferred embodiment, the spiral ribbon blade 4 is a continuous inclined curved surface, one end of which is connected to the upper end of the stirring shaft 2 and is lower than the highest point of the upper body 102, and the other end of which is connected to the lower end of the stirring shaft 2 and is lower than the clearance between the lower end surface of the stirring shaft 2 and the inner wall of the bottom of the body 1. It can be understood that the spiral ribbon blade has the function of circulating and stirring the material up and down. Such a setting can ensure that the spiral ribbon blade rotates to produce a continuous and sufficient stirring area. One end of the stirring shaft is not connected to the equipment, and space for material discharge is provided while achieving the purpose of sufficient stirring and mixing.

[0029] In a preferred embodiment, the spiral ribbon blade 4 has an inclined surface on one side facing the rotation direction of the stirring shaft 2, and the scraper blade 5 forms a 45-degree angle with the second support rod 302. It can be understood that the inclined surface of the spiral ribbon blade 4 on the side facing the rotation direction of the stirring shaft 2 can make the material flip up and down during the rotation process, so that the material is stirred more fully, and the 45-degree angle between the scraper blade 5 and the second support rod 302 can crush the material while also making the material fall faster.

[0030] In a preferred embodiment, a heating jacket 6 is disposed outside the body 1, and a heat-insulating layer 7 is disposed outside the heating jacket 6 to create a constant temperature environment inside the dryer body.

[0031] In a preferred embodiment, the heating jacket 6 is a spiral flow channel, the lower end of the spiral flow channel is a water inlet 8, and the upper end is a water outlet 9. Through the above settings, in actual work, the stirring device is first cleaned and disinfected, and then the material is put into the body from the feed port, and hot water enters the spiral flow channel from the water inlet 8 to heat the material in the body, and then flows out from the water outlet 9, and the stirring shaft 2 drives the stirring blade to rotate, and fully stirs and heats the material. Since the boiling point of water increases under vacuum, the water evaporates into gas and is drawn out by the vacuum machine through the vacuum hole along with the air, thereby achieving the purpose of drying.

[0032] In a preferred embodiment, the volume of the lower half of the stirring shaft 2 gradually decreases and the lower end surface is a smooth curved surface. In this way, the contact surface between the front end of the lower part of the stirring shaft and the material is small, and the overall structure is streamlined, which reduces the resistance between the stirring shaft and the material, improves the stirring efficiency, and shortens the process time.

[0033] In a preferred embodiment, the support rod 3 is detachably connected to the stirring shaft 2 and the stirring blade. For example, the support rod 3 is spirally connected to the stirring shaft 2, and the support rod 3 is screwed to the stirring blade. In this way, when the support rod 3 or the stirring blade is damaged, there is no need to disassemble the entire stirring device, and only the support rod 3 or the stirring blade needs to be disassembled, thereby improving maintenance efficiency and reducing maintenance costs. Of course, other connection methods, such as flange and bolt connection, can also be used.

[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A single cone dryer, comprising a body (1), wherein a stirring shaft (2) is arranged inside the body (1), the upper end of the stirring shaft (2) extends out of the body (1) and is connected to a driving device, and a stirring blade assembly is connected to the surface of the stirring shaft (2), characterized in that: The machine body (1) comprises a top cover (101), an upper machine body (102) and a lower machine body (103); the upper machine body (102) is cylindrical; the lower machine body (103) is inverted cone shape; the stirring blade assembly comprises a plurality of support rods (3) and stirring blades; the support rods (3) are perpendicular to the stirring shaft (2); the length of the support rods (3) gradually decreases from top to bottom and is distributed in an inverted cone shape; the stirring blades are connected to the stirring shaft (2) via the support rods (3); the stirring blades comprise a spiral ribbon blade (4) and at least two scraper blades (5) distributed from top to bottom; the spiral ribbon blade (4) and the scraper blade (5) are arranged in a spiral with the stirring shaft (2) as the center, and the spiral direction of the spiral ribbon blade (4) is opposite to the spiral direction of the scraper blade (5).

2. A single cone dryer according to claim 1, characterized in that: The support rod (3) is divided into a first support rod (301) for connecting the spiral ribbon blade (4) and the stirring shaft (2) and a second support rod (302) for connecting the scraper blade (5) and the stirring shaft (2). The length of the first support rod (301) is inconsistent with the length of the second support rod (302), so that the spiral ribbon blade (4) and the scraper blade (5) have an inner and outer double helix structure.

3. A single cone dryer according to claim 2, characterized in that: The second support rod (302) is arranged close to the first support rod (301).

4. A single cone dryer according to claim 2, characterized in that: The spiral ribbon blades (4) or scraper blades (5) are clearance-matched with the inner wall of the machine body (1).

5. A single cone dryer according to claim 4, characterized in that: The spiral ribbon blade (4) is a continuous inclined curved surface, one end of which is connected to the upper end of the stirring shaft (2) and is lower than the highest point of the upper body (102), and the other end of which is connected to the lower end of the stirring shaft (2) and is lower than the lower end surface of the stirring shaft (2) and is clearance-matched with the bottom inner wall of the body (1).

6. A single cone dryer according to claim 2, characterized in that: The side of the spiral ribbon blade (4) facing the rotation direction of the stirring shaft (2) is an inclined surface, and the scraper blade (5) forms an angle of 45 degrees with the second support rod (302).

7. The single cone dryer according to claim 1, characterized in that: A heating jacket (6) is provided on the outside of the machine body (1), and a heat-insulating layer (7) is provided on the outside of the heating jacket (6).

8. A single cone dryer according to claim 7, characterized in that: The heating jacket (6) is a spiral flow channel, the lower end of the spiral flow channel is a water inlet (8), and the upper end is a water outlet (9).

9. The single cone dryer according to claim 1, characterized in that: The volume of the lower half of the stirring shaft (2) gradually decreases and the lower end surface is a smooth curved surface.

10. The single cone dryer according to claim 1, characterized in that: The support rod (3) is detachably connected to the stirring shaft (2) and the stirring blade.

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