Hot air circulation preheating device for microwave dryer

Abstract

The utility model belongs to the technical field of microwave dryers, and particularly relates to a hot air circulation preheating device for a microwave dryer, which comprises a mounting base, a microwave dryer main body is mounted above the mounting base, a drying cabin is mounted in the center of the interior of the microwave dryer main body, and inlet and outlet openings are formed in two sides of the drying cabin; air circulation in the drying cabin can be controlled through rotation of the fan blade main body, and the position of the hoisting rod in the front-back direction can be changed within a certain range through mutual sliding between the limiting clamping plate and the straight groove clamping opening. Therefore, the device can adjust the position of the fan blade main body above the front-back direction according to the relative width of articles placed on the conveying belt main body, the relative distance between the fan blade main body and the to-be-dried articles is guaranteed, the purpose of adjusting the hot air circulation range within a certain range is achieved, the utilization efficiency of hot air in a drying cabin is improved, and the drying effect is improved. The device practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of microwave drying machine, specifically a kind of hot air circulation preheating device for microwave drying machine. BACKGROUND

[0002] Microwave drying is a new drying method. When drying, microwave energy is directly converted into heat energy by acting on medium molecules. Since microwave has penetration performance, the medium is heated simultaneously inside and outside, and there is no need for heat conduction, so the heating speed is very fast. For food with water content below 30%, the drying speed can be shortened by hundreds of times.

[0003] Currently, the microwave drying machine in the prior art mainly includes a drying machine main body, a conveyor belt and hot air circulation fan blades and other structures. The conveyor belt is installed inside the lower part of the drying machine main body. The microwave-heated articles are placed above the conveyor belt. The articles are moved by the rotation of the conveyor belt. The hot air circulation fan blades are installed above the inside of the microwave drying machine main body. The rotation of the fan blades realizes the purpose of hot air circulation inside the microwave drying machine main body. The hot air circulation reduces the working efficiency of the microwave drying machine to a certain extent.

[0004] In the prior art, the articles to be dried are placed at the center above the conveyor belt and move with the conveyor belt. The hot air circulation fan blades are mostly fixed. This makes the relative area of hot air circulation inside the microwave drying machine fixed. The hot air inside the microwave drying machine is mostly generated from the vicinity of the articles to be dried. The relative width of the articles moving on the conveyor belt is not fixed. When the hot air circulation fan is far away from the heated articles in the conveyor, it is not conducive to hot air circulation.

[0005] Therefore, a hot air circulation preheating device for microwave drying machine is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0006] To make up for the shortcomings of the prior art, solve the problem that the hot air circulation fan blades are mostly fixed, which makes the relative area of hot air circulation inside the microwave drying machine fixed, and the hot air inside the microwave drying machine is mostly generated from the vicinity of the articles to be dried, and the fixed hot air circulation fan blades are not conducive to hot air circulation, a hot air circulation preheating device for microwave drying machine is proposed.

[0007] The utility model discloses a technical scheme that solves its technical problem is adopted: The utility model discloses a kind of hot air circulation preheating device for microwave drying machine, including installation base, microwave drying machine main body is installed in the upper of installation base, the inside center of microwave drying machine main body is installed with drying cabin, the both sides of drying cabin are all provided with inlet and outlet opening, conveying belt main body is installed below drying cabin, the both ends of conveying belt main body are respectively extended to the outside of drying cabin through inlet and outlet opening, the inner wall top surface of drying cabin is provided with straight slot bayonet, the quantity of straight slot bayonet is provided with multiple, multiple straight slot bayonet is arrayed along the inner wall edge direction of drying cabin, and the both ends of multiple straight slot bayonet are provided with circulation assembly.

[0008] Preferably, the circulation assembly includes a lifting rod, a synchronization link is installed through the outer wall of the lifting rod at the front and rear, one end of the lifting rod is fixed with a limiting clamping plate, the outer wall of the limiting clamping plate is clamped with the inner wall of the straight slot bayonet, and the outer wall of the lifting rod is fixed with a fan body near the other end edge.

[0009] Preferably, a circular groove is formed in the outer wall of the lifting rod near the center, a linkage ring is sleeved between the inner walls of the circular groove, a telescopic rod is fixed perpendicularly on the outer wall of the linkage ring, a lifting vertical plate is vertically installed at the lower center of the multiple straight slot bayonets on the inner wall top surface of the drying cabin, and the front wall and the rear wall of the lifting vertical plate are vertically connected with one end of the telescopic rod.

[0010] Preferably, a straight slot opening is formed at the vertical projection of one of the straight slot bayonets at the center of the top surface of the drying cabin, an adjusting cover is fixed at the center of the top of the drying cabin, and a linkage short rod is arranged in front of and behind the inside of the adjusting cover.

[0011] Preferably, one end of the linkage short rod is connected with the top surface of one of the limiting clamping plates through the straight slot opening, and an L-shaped rack is installed on the outer wall of the linkage short rod.

[0012] Preferably, a center gear is installed on the inner wall top surface of the adjusting cover through a shaft rod, the center gear and the two L-shaped racks are meshed with each other, extrusion blocks are fixed on the both sides of the inner wall of the adjusting cover, and the side walls of the two extrusion blocks are in contact with the side walls of the two L-shaped racks, respectively.

[0013] The utility model has the advantages that:

[0014] The utility model provides a hot -blast circulation preheating device for microwave drying machine, the fan blade main part is installed in the one end of hoisting rod, can control the gas circulation inside dry cabin through the rotation of fan blade main part, and hoisting rod passes through the mutual sliding between spacing stopper and straight slot bayonet, makes the position of hoisting rod in front -back direction can change in certain range, and then makes the device can adjust the position of fan blade main part in front -back direction according to the relative width of the article placed on the conveyer belt main part, guarantees the relative distance between fan blade main part and the article to be dried, and then reaches the purpose of adjusting the hot gas circulation range in certain range, increases the utilization efficiency of hot air inside dry cabin, improves dry efficiency, improves the practicality of device. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of this application, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0016] Figure 1 It is the perspective view of the utility model;

[0017] Figure 2 It is the perspective view of dry cabin in the utility model;

[0018] Figure 3 It is the perspective view of the internal structure of dry cabin in the utility model;

[0019] Figure 4 It is the perspective view of linkage ring in the utility model;

[0020] Figure 5 It is the perspective view of adjusting cover in the utility model;

[0021] Legend:

[0022] 1, installation base; 2, microwave drying machine main body; 3, dry cabin; 31, inlet and outlet opening; 4, conveyer belt main body; 32, straight slot bayonet; 5, circulation assembly; 51, hoisting rod; 52, synchronous connecting rod; 511, spacing stopper; 53, fan blade main part; 512, circular groove; 54, linkage ring; 541, telescopic rod; 55, hoisting vertical board; 33, straight slot opening; 6, adjusting cover; 7, linkage short rod; 71, L rack; 61, central gear; 62, extrusion block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] The specific embodiments are given below.

[0025] Please refer to Figures 1-5 The utility model provides a kind of hot air circulation preheating device for microwave drying machine, including installation pedestal 1, the microwave drying machine main body 2 is installed above the installation pedestal 1, the inside center of the microwave drying machine main body 2 is equipped with drying cabin 3, the both sides of the drying cabin 3 are all equipped with inlet and outlet opening 31, the lower portion of the drying cabin 3 is equipped with conveying belt main body 4, the both ends of the conveying belt main body 4 are extended to the outside of drying cabin 3 respectively through inlet and outlet opening 31, the inner wall top surface of the drying cabin 3 is equipped with straight slot bayonet 32, the quantity of the straight slot bayonet 32 is equipped with multiple, multiple the straight slot bayonet 32 is arrayed along the direction of drying cabin 3 inner wall edge, the both ends of multiple the straight slot bayonet 32 are equipped with circulation assembly 5;

[0026] When working, to solve the problem that hot gas circulation fan blade is mostly fixedly arranged, so that the relative area of microwave drying machine internal hot gas circulation is fixed, and most of microwave drying machine internal hot air is generated from the vicinity of the drying material, fixedly arranged hot gas circulation fan blade is not conducive to hot gas circulation, microwave drying machine main body 2 is installed on installation pedestal 1, drying cabin 3 is installed in the microwave drying machine main body 2, and the raw material to be dried is entered into the inside of drying cabin 3 from the inlet and outlet opening 31 of one side under the rotation of conveying belt main body 4, is excluded from the other side of inlet and outlet opening 31 after microwave drying treatment in the inside 11, and the straight slot bayonet 32 is the structure for installing circulation assembly 5 in the inside of drying cabin 3, and the circulation of hot air in the inside of drying cabin 3 is realized by the mutual cooperation between circulation assembly 5 in the inside of drying cabin 3.

[0027] Further, as shown in Figure 3 And Figure 4 The circulation assembly 5 includes a lifting rod 51, a plurality of the lifting rods 51 are installed between the outer walls of the front and rear portions, a synchronous connecting rod 52 is installed through the outer walls, one end of the lifting rod 51 is fixedly connected to a limiting clamping plate 511, the outer wall of the limiting clamping plate 511 is clamped with the inner wall of the straight slot bayonet 32, and a fan body 53 is fixed to the outer wall of the lifting rod 51 near the other end edge.

[0028] When working, the synchronous connecting rod 52 is connected with the front and rear position access openings 31 respectively, so that the front and rear position hoisting rods 51 can move synchronously, the fan body 53 is installed at one end of the hoisting rod 51, the rotation of the fan body 53 can control the gas circulation in the drying cabin 3, the hoisting rod 51 can change the position in the front and rear direction within a certain range through the mutual sliding between the limiting clamping plate 511 and the straight slot clamping opening 32, and the blowing directions of the front and rear position fan bodies 53 are opposite, so that the air circulation in the drying cabin 3 is realized.

[0029] Further, as shown in Figure 3 and Figure 4 , the outer wall of the hoisting rod 51 is provided with a circular groove 512 near the center, the inner wall of the circular groove 512 is sleeved with a linkage ring 54, the outer wall of the linkage ring 54 is vertically fixed with an extension rod 541, the inner wall of the top of the drying cabin 3 is vertically installed with a hoisting vertical plate 55 below the center of the plurality of straight slot clamping openings 32, and the front wall and the rear wall of the hoisting vertical plate 55 are vertically connected with one end of the extension rod 541.

[0030] When working, the hoisting rod 51 is installed on the linkage ring 54 through the circular groove 512, the hoisting vertical plate 55 is hoisted below the straight slot clamping opening 32, and the extension rod 541 is connected with the hoisting vertical plate 55 and the linkage ring 54, so that the hoisting rod 51 can move forward and backward without affecting the support of the lower part of the hoisting rod 51, and the structural stability of the device is improved.

[0031] Further, as shown in Figure 2 and Figure 3 , the vertical projection of one of the straight slot clamping openings 32 at the center of the top of the drying cabin 3 is provided with a straight slot opening 33, the top center of the drying cabin 3 is fixed with an adjusting cover 6, and the front and rear of the inside of the adjusting cover 6 are provided with linkage short rods 7.

[0032] When working, the straight slot opening 33 is provided, so that the position of the circulating assembly 5 can be adjusted from the top of the drying cabin 3, the straight slot opening 33 is blocked by the adjusting cover 6, so that the hot gas is prevented from leaking from the top, and the linkage short rod 7 is a structure inside the adjusting cover 6 for linkage with the circulating assembly 5.

[0033] Further, as shown in Figure 4 and Figure 5 , one end of the linkage short rod 7 is connected with the top of one of the limiting clamping plates 511 through the straight slot opening 33, and the outer wall of the linkage short rod 7 is installed with an L-shaped rack 71.

[0034] When working, the linkage short rod 7 is connected with the limiting clamping plate 511 through the straight slot opening 33, so that the position of the lifting rod 51 in front and back position can be adjusted by adjusting the position of the linkage short rod 7. The L-shaped rack 71 is one of the structures for connecting the position of the lifting rod 51 in front and back direction.

[0035] Further, as shown in Figure 4 and Figure 5 The inner wall top surface of the adjusting cover 6 is provided with a central gear 61 through a shaft rod, the central gear 61 and the two L-shaped racks 71 are in meshing relationship, and the two sides of the inner wall of the adjusting cover 6 are fixedly provided with extrusion blocks 62, and the adjacent side walls of the two extrusion blocks 62 are in contact with the side walls of the two L-shaped racks 71 respectively.

[0036] When working, the adjusting cover 6 is provided with the central gear 61, the central gear 61 and the L-shaped rack 71 are in meshing relationship, so that the synchronous reverse movement of the L-shaped rack 71 can be controlled by rotating the central gear 61, the position of the lifting rod 51 is controlled, the extrusion blocks 62 are fixed on the side walls of the adjusting cover 6, the position of the L-shaped rack 71 is limited by the contact between the extrusion blocks 62 and the two L-shaped racks 71, and the installation stability of the L-shaped rack 71 is increased

[0037] Working principle: in order to solve the problem that the relative area of hot air circulation of microwave drying machine is fixed because the hot air circulation fan is fixed, and the hot air in microwave drying machine is mostly generated from the vicinity of the drying material, the microwave drying machine main body 2 is installed on the mounting base 1, the drying cabin 3 is installed in the mounting base 1, the raw material to be dried enters the drying cabin 3 from one side of the inlet and outlet opening 31 under the rotation of the conveying belt main body 4, and is discharged from the other side of the inlet and outlet opening 31 after the microwave drying treatment in the 11, the circulation of hot air in the drying cabin 3 is realized through the cooperation between the circulation assemblies 5, the synchronous connecting rods 52 are connected with the inlet and outlet openings 31 at the front and rear positions respectively, so that the lifting rods 51 at the front and rear positions can move synchronously, the fan body 53 is installed at one end of the lifting rod 51, the rotation of the fan body 53 can control the gas circulation in the drying cabin 3, the lifting rod 51 can change the position in the front and rear directions within a certain range through the mutual sliding between the limiting clamping plates 511 and the straight slot clamps 32, the lifting rod 51 is installed through the circular ring groove 512, the lifting vertical plate 55 is hung below the straight slot clamp 32, the lifting vertical plate 55 and the linkage ring 54 are connected through the telescopic rod 541, so that the lifting rod 51 can move forward and backward without affecting the lifting rod 51, the linkage short rod 7 is connected with the limiting clamping plates 511 through the straight slot opening 33, so that the position of the linkage short rod 7 can be adjusted to adjust the position of the lifting rod 51 at the front and rear positions, the adjusting cover 6 is installed on the center gear 61, the center gear 61 and the L-shaped rack 71 are engaged with each other, so that the rotation of the center gear 61 can control the synchronous reverse movement of the L-shaped rack 71, and the L-shaped rack 71 is limited in position through the mutual contact between the extrusion blocks 62 and the two L-shaped racks 71.

[0038] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A hot air circulation preheating device for a microwave dryer, comprising a mounting base (1), a microwave dryer body (2) mounted above the mounting base (1), a drying chamber (3) mounted at the center of the microwave dryer body (2), inlet and outlet openings (31) on both sides of the drying chamber (3), and a conveyor belt body (4) mounted below the drying chamber (3), characterized in that: Two ends of the conveying belt body (4) extend to the outside of the drying cabin (3) through the access opening (31) respectively, a straight slot notch (32) is arranged on the top surface of the inner wall of the drying cabin (3), a plurality of the straight slot notches (32) are arranged in an array along the edge direction of the inner wall of the drying cabin (3), and the two ends of the plurality of straight slot notches (32) are provided with a circulating assembly (5).

2. The hot air circulation preheating device for a microwave dryer according to claim 1, characterized in that: The circulating assembly (5) comprises a hoisting rod (51), a synchronous connecting rod (52) is installed through the outer walls of the front and rear hoisting rods (51) respectively, one end of the hoisting rod (51) is fixedly connected with a limiting clamping plate (511), the outer wall of the limiting clamping plate (511) is clamped with the inner wall of the straight slot notch (32), and the outer wall of the hoisting rod (51) is fixedly connected with a fan body (53) near the other end edge.

3. The hot air circulation preheating device for a microwave dryer according to claim 2, characterized in that: A circular groove (512) is arranged on the outer wall of the hoisting rod (51) near the center, a linkage ring (54) is arranged in the circular groove (512), a telescopic rod (541) is vertically fixed on the outer wall of the linkage ring (54), a hoisting vertical plate (55) is vertically installed below the center of the plurality of straight slot notches (32) on the top surface of the inner wall of the drying cabin (3), and the front wall and the rear wall of the hoisting vertical plate (55) are vertically connected with one end of the telescopic rod (541).

4. The hot air circulation preheating device for a microwave dryer according to claim 3, characterized in that: A straight slot opening (33) is arranged on the vertical projection of one of the straight slot notches (32) on the center of the top surface of the drying cabin (3), an adjusting cover (6) is fixed on the center of the top of the drying cabin (3), and linkage short rods (7) are arranged in the front and rear of the adjusting cover (6).

5. The hot air circulation preheating device for a microwave dryer according to claim 4, characterized in that: One end of the linkage short rod (7) is connected with the top surface of one of the limiting clamping plates (511) through the straight slot opening (33), and an L-shaped rack (71) is installed on the outer wall of the linkage short rod (7).

6. The hot air circulation preheating device for a microwave dryer according to claim 5, characterized in that: A center gear (61) is installed on the inner wall top surface of the adjusting cover (6) through a shaft rod, the center gear (61) and the two L-shaped racks (71) are in meshing connection, and extrusion blocks (62) are fixed on the two sides of the inner wall of the adjusting cover (6).

Images