Vertical vacuum dryer

Abstract

The utility model relates to the technical field of drying of powder and particle materials, in particular to a vertical vacuum drying machine which comprises a barrel body used for containing materials and a jacket arranged on the wall face of the barrel body, and a thermal medium used for conducting heat exchange with the materials is arranged in the jacket. The drying machine is characterized by further comprising a first frame body serving as a support and a second frame body used for being connected with the barrel body; the second frame body is connected with a vibration motor, so that the barrel body can be powered by the vibration motor and is driven by the second frame body to realize vibration operation; the first frame body and the second frame body are connected through an elastic piece. According to the vertical dryer disclosed by the utility model, the vibration motor is used for providing power for the barrel body to turn over materials, and compared with a traditional structure, the vertical dryer has the advantages that the heat energy utilization rate is increased, the charging coefficient is increased, and the structure of the dryer is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of drying powder and granular materials, in particular to a vertical vacuum dryer. Background Art

[0002] Vacuum dryer is a low-temperature device that heats materials in a vacuum. It is used for dehydration and drying of high value-added and heat-sensitive agricultural and sideline products, health products, food, medicinal materials, fruits and vegetables, chemical raw materials, etc.; it is used for low-temperature concentration of chemical products, removal of crystal water, drying of enzyme preparations, etc.

[0003] Vertical vacuum dryer is a type of vacuum dryer, which is mainly suitable for drying in the fields of pharmaceuticals, metallurgy, etc. Compared with horizontal dryers, it occupies a larger area and has higher drying efficiency.

[0004] Current vertical dryers have the following drawbacks:

[0005] First, a stirring device is installed in the dryer to act on the material. This stirring method causes uneven heating of the material, and the frequency of repeated heating between the material surface and the heat source is low, resulting in low utilization of the heat source and long drying time.

[0006] Second, in order to achieve full contact between the material and the heat source, the loading factor in the dryer is low, at around 40%, resulting in low drying efficiency;

[0007] Third, it is necessary to provide the stirring device with supporting rotating joints, sealing mechanisms and other structures that are easy to harbor dirt and be blocked by foreign objects, resulting in high equipment costs and high maintenance costs. Utility Model Content

[0008] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a vertical vacuum dryer.

[0009] According to a vertical vacuum dryer proposed by the utility model, in some examples of the utility model, the dryer includes a cylinder for containing materials and a jacket arranged on the wall of the cylinder, wherein the jacket contains a heat medium for heat exchange with the materials, wherein the extension direction of the cylinder is longitudinal, and when placed on a horizontal ground, its extension direction is perpendicular to the ground, that is, the cylinder is a vertical structure.

[0010] The difference from the traditional vertical vacuum dryer is that: the present dryer also includes a first frame as a support and a second frame for connecting with the cylinder; for example, the first frame can be fixedly placed on the ground as a supporting structure of the dryer, and the second frame is connected with a vibration motor, so that the cylinder can be powered by the vibration motor and transmitted through the second frame to achieve vibration operation, so that the material and the inner wall of the cylinder can achieve frequent and uniform heat exchange; in order to assist the vibration operation of the cylinder, the first frame and the second frame are also connected by an elastic member, and the deformation force of the elastic member offsets part of the vibration effect, thereby ensuring that the first frame can remain stable and the second frame can always follow the vibration.

[0011] The vibration motor is used to provide power to the cylinder to turn the material over. The material can achieve high-frequency heat exchange under the high-frequency vibration, thereby improving the utilization rate of thermal energy. And because the material and the inner wall of the cylinder can exchange heat at high frequency, the charging factor is improved. At the same time, there is no need to set a rotating joint or a sealing structure that can be easily blocked.

[0012] In some examples of the present invention, the second frame includes a plane frame formed by two or more rods cross-fixed, such as a cross frame, a well frame, a triangular frame, etc., and the plane in the plane frame is interpreted as a plurality of rods being basically in the same plane, and the ideal state is that the plane is perpendicular to the extension direction of the cylinder;

[0013] One side of the planar frame is fixed relative to the cylinder, and several ends of the planar frame are connected to the first frame by elastic members. For example, when the planar frame is a cross body, it has four ends, and the four ends allow the cylinder to be placed relatively stably. Specifically, the four ends can be connected to the first frame by elastic members, so that the cylinder can be stably supported, and vibration operation can be achieved under the support.

[0014] In some examples of the present invention, the second frame body further includes a first columnar body, one end of the first columnar body has an edge protrusion, the cylinder body and the edge protrusion are connected by bolts, and the other end of the first columnar body is fixedly connected to the plane frame body, that is, the plane frame body and the cylinder body are connected by the action of the first columnar body;

[0015] The edge convex structure makes one end of the first column have a plane or curved surface that fits the bottom of the cylinder. The surface increases the contact area between the first column and the cylinder, thereby making the connection between the first column and the cylinder more secure, and the lower end of the first column is also connected to the plane frame by bolts.

[0016] In some examples of the present invention, the second frame also includes a second column, which is connected to one end of the planar frame away from the first column, so that the vibration motor is connected to the second column, that is, the second column provides a support structure for the installation of the vibration motor, so that the vibration motor can be relatively located directly below the cylinder to ensure that the material can fully receive the vibration effect.

[0017] In some examples of the utility model, a feed pneumatic valve is provided at the upper end of the cylinder, and a discharge pneumatic valve is provided at the lower end of the cylinder. The vacuum valves of the feed pneumatic valve and the discharge pneumatic valve piston structure can ensure the vacuum degree in the tank.

[0018] In some examples of the utility model, a vacuum filter is also provided at the upper end of the cylinder, and a vacuum port is provided on one side of the vacuum filter; wherein the vacuum filter has multiple filter elements, and a sintered filter element or a wire mesh folded filter element may also be provided, and the vacuum port is used to vacuum the cylinder. A nitrogen backflush port may also be provided on the cylinder to prevent the vacuum cover from being blocked during the drying process of some powder materials, and the vacuum filter may be backflushed from time to time during the drying process to ensure smooth air extraction and accelerate drying.

[0019] In some examples of the present invention, the jacket is connected with a heat medium inlet and outlet to facilitate the circulation of the heat medium in the jacket.

[0020] In some examples of the present invention, there are a plurality of elastic members, which correspond one-to-one to a plurality of ends of the planar frame, respectively, so as to ensure that the cylinder can be in a relatively stable state when vibrating.

[0021] In some examples of the present invention, the elastic member includes a first plate body connected to the ends of the plane frame body and a second plate body connected to the first frame body; and also includes a plurality of springs distributed in an annular shape along the central axis of the elastic member, the springs can generate elastic deformation directed between the first plate body and the second plate body, that is, the deformation effect of the spring can resist part of the vibration effect in the longitudinal direction, ensuring that the first frame body and the second frame body are always connected under the action of vibration;

[0022] During the vibration operation, the first frame and the second frame not only generate longitudinal vibration under the action of vibration, but also generate lateral vibration displacement. If the frequent vibration is not controlled, it will cause high-frequency wear on the connection between the first frame and the second frame, resulting in damage to the frame or the spring. Therefore, the spring has two ends in a plane perpendicular to the central axis, one end of which is connected to the first plate by a first rivet, and the other end is connected to the second plate by a second rivet. In this way, when the first frame and the second frame generate lateral vibration displacement, the two may be misaligned, and the springs respectively connected to the two can accommodate the misalignment by deforming, and use the deformation force to restore the misalignment.

[0023] In some examples of the utility model, the spring is a sheet-like body extending at both ends and bent into a snake shape. The first pull nail penetrates the spring and the first disk body along the extension direction of the spring to connect the spring with the first disk body. The second pull nail penetrates the spring and the second disk body along the extension direction of the spring to connect the spring with the second disk body. The design of the sheet-like body is to enhance the quality of the spring and facilitate the penetration of the pull nail.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A perspective view of a vertical vacuum dryer.

[0027] Figure 2 This is a schematic diagram of the running direction of materials in the cylinder when the dryer is operating;

[0028] Figure 3 is a top view of the first frame 30;

[0029] Figure 4 is a front view of the elastic member;

[0030] Figure 5 for Figure 4 Sectional view at AA;

[0031] Description of reference numerals:

[0032] 10- cylinder, 101- n-shaped wall, 102- feeding pneumatic valve, 103- discharging pneumatic valve, 104- vacuum filter, 105- vacuum port, 106- heat medium inlet and outlet, 107- heat medium pipeline;

[0033] 20-jacket, 201-partition, 202-plane partition 202;

[0034] 30- first frame;

[0035] 40-second frame, 401-plane frame, 402-first columnar body, 403-edge protrusion, 404-second columnar body, bolt 405;

[0036] 50-Vibration motor;

[0037] 60-elastic member, 601-first disk body, 602-second disk body, 603-spring, 604-first rivet, 605-second rivet. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, 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 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 are within the scope of protection of the utility model.

[0039] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] Reference below Figure 1 to Figure 5A vertical vacuum dryer provided in an embodiment of the utility model is described.

[0043] Specifically, please refer to Figure 1 The dryer comprises a cylinder 10 for holding materials, and the cylinder 10 extends longitudinally on a perspective surface, that is, when the dryer is placed on a horizontal ground, the cylinder extends in a direction perpendicular to the horizontal ground, and the extension direction is different from the horizontal extension in a horizontal dryer; the extension direction is characterized by a larger longitudinal space, so that the wall surface at the middle of the bottom of the cylinder is concave toward the inside of the cylinder, forming an n-shaped wall surface 101, so that the heat medium can move deeply into the middle of the cylinder 10 along the n-shaped wall surface 101, thereby increasing the heat exchange area and improving the heat exchange efficiency;

[0044] Please continue to refer to Figure 1 The dryer further comprises a jacket 20 arranged on the wall surface of the cylinder 10, wherein the jacket 20 contains a heat medium for heat exchange with the material, and the heat medium may be any one of air, water or medium oil; the jacket 20 is formed by wrapping a layer of a partition 201 in the shape of the cylinder 20 on the outer wall surface of the cylinder 10, and is formed by the space between the partition 201 and the outer wall of the cylinder 20, and a plane partition 202 is further arranged at the position where the partition 201 meets the n-shaped wall surface 101, and the direction of the plane partition 202 points to the n-shaped wall surface 101, so that the heat medium can be filled into the concave n-shaped wall surface 101.

[0045] Please continue to refer to Figure 1 The dryer further comprises a first frame 30 as a support and a second frame 40 for connecting with the cylinder 10; wherein the first frame 30 can be placed on a horizontal ground as a support frame of the entire dryer, and the second frame 40 is a frame of the cylinder 10, so that the cylinder 10 has an end that can be stably connected with the first frame 30, especially when the cylinder 10 is a longitudinally extending cylinder, the arrangement of the second frame 40 needs to make the cylinder 10 remain stable even under vibration;

[0046] Therefore, please refer to Figures 1-2 The second frame 40 is arranged as follows: it includes a plane frame 401 formed by two cross-fixed rods, that is, a cross, and the cross has four ends and two sides. When arranged in the dryer, the two sides of the cross are basically parallel to the horizontal ground, so that one side is fixed relative to the cylinder 10, and the four ends are connected to the first frame 30.

[0047] Please continue to refer to Figures 1-2The arrangement of the second frame 40 is more specifically as follows: the second frame 40 further includes a first columnar body 402, which is hollow, that is, it basically presents a cylindrical structure with two ends open, and the cylindrical structure also extends longitudinally, is coaxial with the cross and the cylinder 10, and its two ends are fixedly connected to the cylinder 10 and the cross respectively;

[0048] For more details, please refer to Figure 2 A basically annular lip 403 is welded to one end of the first column 402 close to the cylinder 10. The width of the lip 403 is greater than the wall thickness of the first column 402 to increase the contact area with the cylinder 10. At the same time, the lip 403 follows the shape of the cylinder 10 and is in an inclined state to facilitate a close fit with the cylinder 10. On this basis, the lip 403 and the cylinder 10 are fixedly connected by multiple bolts 405.

[0049] Please continue to refer to Figure 1 The dryer further comprises a vibration motor 50 connected to the second frame 40, so that the drum 10 can be powered by the vibration motor 50 and transmitted through the second frame 40 to achieve vibration operation;

[0050] Please refer to Figure 3 , is the direction of material movement in the cylinder when arranged in this way.

[0051] Please continue to refer to Figures 1-2 The arrangement between the second frame 40 and the vibration motor 50 is as follows: the second frame 40 also includes a second columnar body 404, which is also hollow, that is, it basically presents a cylindrical structure with two ends open, and the cylindrical structure is also longitudinally extended, and is also coaxial with the cross and the cylinder 10, and its upper end is connected to the other side of the cross; and the vibration motor 50 is connected to the outer wall surface of the second columnar body 404.

[0052] Please continue to refer to Figure 1 The first frame 30 and the second frame 40 are connected by an elastic member 60. Specifically, the first frame 30 also has ends corresponding to the four ends of the cross, and the corresponding ends are connected by the elastic member 40.

[0053] Please refer to Figures 4-5 The elastic member 60 specifically includes a first disk body 601 fixedly connected to the ends of the planar frame body 401 and a second disk body 602 fixedly connected to the first frame body 30; it also includes a plurality of springs 603 distributed in a ring shape along the central axis L of the elastic member 60, the spring 603 can generate elastic deformation pointing between the first disk body 601 and the second disk body 602, and the spring 603 has two ends in a plane perpendicular to the central axis L, one end of which is connected to the first disk body 601 by a first rivet 604, and the other end is connected to the second disk body 602 by a second rivet 605.

[0054] Please continue to refer to Figure 4 The spring 603 is a sheet-like body extending at both ends and bent into a snake shape. The first rivet 604 penetrates the spring 603 and the first disk body 601 along the extension direction of the spring 603 to connect the spring 603 to the first disk body 601. The second rivet 605 penetrates the spring 603 and the second disk body 602 along the extension direction of the spring 603 to connect the spring 603 to the second disk body 602.

[0055] Please continue to refer to Figure 1 A feed pneumatic valve 102 is provided at the upper end of the cylinder 10, and a discharge pneumatic valve 103 is provided at the lower end of the cylinder 10 to control the inflow and outflow of materials.

[0056] Please continue to refer to Figure 1 A vacuum filter 104 is also provided at the upper end of the cylinder 10 , and a vacuum port 105 is provided on one side of the vacuum filter 104 for maintaining the vacuum inside the cylinder 10 .

[0057] Please continue to refer to Figure 1 The jacket 20 is connected with a heat medium inlet and outlet 106, and the heat medium inlet and outlet 106 is connected with a heat medium pipeline 107. The heat medium pipeline 107 sequentially passes through the first column 402, the plane frame 401, the second column 404, and the first frame 30 and is output outside the dryer to be connected with the heat medium heating device.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation 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 one or more embodiments or examples in a suitable manner.

[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vertical vacuum dryer, comprising a cylinder for holding materials and a jacket arranged on the wall of the cylinder, wherein the jacket contains a heat medium for heat exchange with the materials; characterized in that: The dryer also includes a first frame as a support and a second frame connected to the cylinder; the second frame is connected to a vibration motor, so that the cylinder can be powered by the vibration motor and transmitted through the second frame to achieve vibration operation; the first frame and the second frame are connected by an elastic member.

2. The vertical vacuum dryer according to claim 1, characterized in that: The second frame includes a plane frame formed by two or more rods cross-fixed, wherein one side of the plane frame is fixed relative to the cylinder, and a plurality of ends of the plane frame are connected to the first frame by the elastic member.

3. The vertical vacuum dryer according to claim 2, characterized in that: The second frame also includes a first columnar body, one end of the first columnar body has a flange, the cylinder body and the flange are connected by bolts, and the other end of the first columnar body is fixedly connected to the planar frame.

4. The vertical vacuum dryer according to claim 3, characterized in that: The second frame also includes a second column, which is connected to one end of the plane frame away from the first column, so that the vibration motor is connected to the second column.

5. A vertical vacuum dryer according to any one of claims 1 to 4, characterized in that: The upper end of the cylinder is provided with a feeding pneumatic valve, and the lower end of the cylinder is provided with a discharging pneumatic valve.

6. A vertical vacuum dryer according to any one of claims 1 to 4, characterized in that: A vacuum filter is also arranged at the upper end of the cylinder, and a vacuum port is arranged at one side of the vacuum filter.

7. A vertical vacuum dryer according to any one of claims 1 to 4, characterized in that: The jacket is connected with a heat medium inlet and outlet.

8. A vertical vacuum dryer according to any one of claims 2 to 4, characterized in that: There are a plurality of elastic members, which correspond to a plurality of ends of the planar frame one by one.

9. The vertical vacuum dryer according to claim 8, characterized in that: The elastic member includes a first disk body respectively connected to the ends of the planar frame and a second disk body connected to the first frame; and also includes a plurality of springs distributed in a ring shape along the central axis of the elastic member, the springs can generate elastic deformation pointing between the first disk body and the second disk body, and the spring has two ends in a plane perpendicular to the central axis, one end of the spring is connected to the first disk body by a first rivet, and the other end is connected to the second disk body by a second rivet.

10. The vertical vacuum dryer according to claim 9, characterized in that: The spring is a sheet-like body extending at both ends and bent into a snake shape. The first pull nail penetrates the spring and the first disk body along the extension direction of the spring to connect the spring to the first disk body. The second pull nail penetrates the spring and the second disk body along the extension direction of the spring to connect the spring to the second disk body.

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