Hot air circulating oven

Abstract

The utility model provides a hot air circulating oven which comprises an oven body, a frame body is arranged in the oven body, air cavities are formed between the left side wall and the right side wall of the oven body and the left side wall and the right side wall of the frame body, a plurality of trays which are longitudinally distributed are inserted into the frame body, the trays can vibrate at the inserting positions of the trays and the frame body, and the upper side of each tray is connected with a cover plate with first air holes in a covering mode. A plurality of ventilation openings communicated with the air cavity are formed in the inner wall of the frame body. The stirring device has the advantages that the tray capable of vibrating is inserted into the frame body, hot air is blown into the frame body through the air cavity for drying, meanwhile, the tray vibrates, medicinal materials in the tray are vibrated, the medicinal materials cannot be stacked together, the stirring effect is achieved, the cover plate is arranged, the medicinal materials in the tray are limited, and the stirring effect is good. Light medicinal materials are prevented from flying out of the tray after being blown by hot air; according to the drying box, the drying effect is more uniform, light traditional Chinese medicine cannot be blown away by hot air in the drying process, and the use reliability is higher.

Description

Technical Field

[0001] The utility model belongs to the field of drying equipment, in particular to a hot air circulation oven. Background Art

[0002] During the processing of traditional Chinese medicine decoction pieces, it is necessary to dry them. When drying, a hot air drying oven is used. The traditional Chinese medicine is placed on a tray inside the oven, and then hot air is blown into the oven to achieve the drying effect. However, for some traditional Chinese medicine with relatively light quality, it is very likely to be blown away from the tray during the hot air blowing, and the traditional Chinese medicine being blown by the hot air is very likely to accumulate in a certain position of the tray, which causes the problem of uneven drying, affects the drying effect, and ultimately leads to poor production quality of traditional Chinese medicine decoction pieces. Content of the Utility Model

[0003] In view of this, the utility model aims to overcome the above deficiencies in the prior art and proposes a hot air circulation oven.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] A hot air circulation oven includes a box body. A frame body is arranged inside the box body, and air cavities are arranged between the left and right side walls and the rear side wall of the box body and the frame body. A plurality of longitudinally distributed trays are inserted in the frame body, and the trays can vibrate at the insertion part with the frame body. A cover plate with first ventilation holes is covered on the upper side of the trays, and a plurality of ventilation openings communicating with the air cavities are arranged on the inner wall of the frame body.

[0006] Further, a vibrator is fixedly connected to the inner wall of the frame body.

[0007] Further, the tray includes a tray board provided with second ventilation holes. A square frame is fixedly connected to the upper side of the tray board, and connecting blocks are fixedly connected outward on both sides of the square frame. Connecting columns are vertically fixedly connected to each connecting block. Positioning blocks are fixedly connected to both sides of the cover plate corresponding to the connecting blocks, and positioning holes are arranged on each positioning block corresponding to the connecting columns. The cover plate is covered on the square frame, and the positioning blocks are sleeved on the connecting columns through the positioning holes.

[0008] Further, an annular limiting edge is circumferentially fixedly connected to each connecting column, and the outer surface of the limiting edge is set to an inverted V-shaped structure. The limiting edge is located above the positioning block.

[0009] Further, a handle is fixedly connected to the upper side of the cover plate.

[0010] Further, U-shaped connecting rails are fixedly connected to the inner walls of the left and right sides of the frame body corresponding to the tray board. The two ends of the tray board are inserted into the U-shaped grooves of the connecting rails, and a first gap is arranged between the two ends of the tray board and the corresponding U-shaped grooves.

[0011] Further, a plurality of springs are fixedly connected to the upper side of the U-shaped groove of each connecting rail. When the supporting plate is lapped on the lower side wall of the U-shaped groove, a second gap is provided between the lower end of the spring and the supporting plate.

[0012] Further, a stop block is vertically provided at the front end of each connecting rail, and the upper end of the stop block is rotatably connected to the T-shaped fixing column fixed above the U-shaped groove, and the lower end extends freely across the U-shaped groove.

[0013] Further, ventilation openings are provided above each tray corresponding to the frame body, and guide plates inclined downward are fixedly connected to the inner wall of the frame body above each row of ventilation openings, and a plurality of through holes are uniformly provided on the guide plates.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] In the hot air circulation oven of the present utility model, a vibratable tray is inserted into the frame body. While blowing hot air into the frame body through the air cavity for drying, the tray vibrates to vibrate the medicinal materials in the tray, so that they will not pile up together, thereby achieving the effect of turning and mixing. And a cover plate is provided to limit the medicinal materials in the tray to prevent the medicinal materials with lighter quality from flying out of the tray after being blown by the hot air; the drying effect of this drying oven is more uniform, and the lighter traditional Chinese medicines will not be blown away by the hot air during the drying process, and the use reliability is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the hot air circulation oven according to an embodiment of the present utility model;

[0018] Figure 2 is a front view of the hot air circulation oven according to an embodiment of the present utility model;

[0019] Figure 3 is Figure 2 a partial enlarged view of part A in

[0020] Description of the reference numerals:

[0021] 1, box body; 2, frame body; 201, ventilation opening; 3, tray; 301, supporting plate; 302, square frame; 303, connecting block; 304, connecting column; 4, cover plate; 401, first ventilation hole; 402, positioning block; 403, handle; 5, connecting rail; 501, U-shaped groove; 6, spring; 7, limiting edge; 8, stop block; 9, vibrator; 10, guide plate; 1001, through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. 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.

[0024] 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 an indirect connection 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 by specific circumstances.

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0026] As shown in the figure, a hot air circulation oven includes a box body 1, a frame body 2 is arranged inside the box body 1, and a wind cavity is arranged between the left and right side walls and the rear side wall of the box body 1 and the frame body 2, a plurality of longitudinally distributed trays 3 are inserted in the frame body 2, and the trays 3 can vibrate at the insertion point with the frame body 2, a cover plate 4 with a first air hole 401 is connected to the upper side cover of the tray 3, and a plurality of vents 201 connected to the wind cavity are opened on the inner wall of the frame body 2. In this embodiment, the front side opening of the box body 1 is provided, and an opening and closing door (not shown in the figure) is provided at the front side opening. In this embodiment, a vibrating tray 3 is inserted in the frame body 2, and hot air is blown into the frame body 2 through the wind cavity to dry, so that the tray 3 vibrates, and the medicinal materials in the tray 3 are vibrated, and they are not piled up together, thereby achieving the effect of turning and mixing, and a cover plate 4 is provided to limit the position of the medicinal materials in the tray 3, so as to prevent the lighter medicinal materials from flying out of the tray 3 after being swept by the hot air.

[0027] A vibrator 9 is fixedly connected to the inner wall of the frame body 2. In this embodiment, the vibrator 9 is a vibration motor. By vibrating the vibration motor, the tray 3 vibrates, and then the medicinal materials in the tray 3 vibrate and displace, achieving the effect of turning and mixing, and the drying is more thorough.

[0028] The tray 3 includes a tray board 301 provided with second ventilation holes. A square frame 302 is fixedly connected to the upper side of the tray board 301, and connecting blocks 303 are fixedly connected outwardly on both sides of the square frame 302. Connecting columns 304 are vertically fixedly connected to each connecting block 303. Positioning blocks 402 are fixedly connected to the corresponding positions of both sides of the cover plate 4 corresponding to the connecting blocks 303. Positioning holes are opened at the positions corresponding to the connecting columns 304 on each positioning block 402. The cover plate 4 is connected to the square frame 302 in a covering manner, and the positioning blocks 402 are sleeved on the connecting columns 304 through the positioning holes.

[0029] An annular limiting edge 7 is circumferentially fixedly connected to each connecting column 304, and the outer surface of the limiting edge 7 is set as an inverted V-shaped structure. The limiting edge 7 is located above the positioning block 402. In this embodiment, the limiting edge 7 is made of rubber and is adhesively fixed to the connecting column 304. By setting the limiting edge 7, when the operator presses the cover plate 4 downward forcefully, the positioning block 402 passes downward through the limiting edge 7, so that the limiting edge 7 is located above the positioning block 402 after passing through the positioning hole. During the drying process, the positioning block 402 is limited to a certain extent to prevent the cover plate 4 from moving upward due to vibration and disengaging from the tray 3.

[0030] A handle 403 is fixedly connected to the upper side of the cover plate 4, which is convenient for the operator to remove or install the cover plate 4 on the tray 3.

[0031] C-shaped connecting rails 5 are fixedly connected to the corresponding positions of the left and right inner walls of the frame body 2 corresponding to the tray board 301. Both ends of the tray board 301 are inserted into the C-shaped grooves 501 of the connecting rails 5, and a first gap is provided between the end parts of both ends of the tray board 301 and the corresponding C-shaped grooves 501. Setting the first gap makes it more convenient for the tray 3 to vibrate left and right.

[0032] A plurality of springs 6 are fixedly connected to the upper side of the C-shaped groove 501 of each connecting rail 5. When the tray board 301 is lapped on the lower side wall of the C-shaped groove 501, a second gap is provided between the lower end of the spring 6 and the tray board 301, which does not affect the insertion of the tray 3 into the connecting rail 5 or the extraction from the connecting rail 5, and is also convenient for the tray 3 to vibrate up and down. And when vibrating up and down, by touching the spring 6, the impact on the tray 3 is reduced, making the vibration of the tray 3 softer.

[0033] A stop block 8 is vertically provided at the front end of each connecting rail 5, and the upper end of the stop block 8 is rotatably connected to a T-shaped fixing column fixedly connected above the C-shaped groove 501, and the lower end hangs freely across the C-shaped groove 501. In this embodiment, the tray board 301 is limited by the stop block 8 to prevent the tray board 301 from moving forward during the vibration process and hitting the opening and closing door.

[0034] A vent 201 is provided on the frame 2 corresponding to the top of each tray 3, and a guide plate 10 arranged obliquely downward is fixedly connected to the inner wall of the frame 2 above each row of vents 201, and a plurality of through holes 1001 are evenly provided on the guide plate 10. In this embodiment, the vents 201 are located on the left and right side walls and the rear side wall of the frame 2 corresponding to the top of each tray 3. The guide plate 10 arranged obliquely downward guides the hot air blown out of the vent 201 to blow toward the tray 3. At the same time, due to the through holes 1001 provided on the guide plate 10, a part of the hot air is dispersed from the guide hole, changing the hot air flow direction, and drying the tray 3 above.

[0035] In this embodiment, a hot air blower is provided outside the box body 1, and the hot air blower is connected to the air cavity through an air duct (not shown in the figure).

[0036] The working process of this embodiment is as follows:

[0037] Place the medicinal materials to be dried in the tray 3, cover the cover plate 4, and then insert the tray 3 into the frame 2. After the tray 3 is placed, turn the block 8 to make it fall freely to limit the position of the tray 3; close the opening and closing door, start the hot air blower to blow hot air into the air cavity, and the hot air is blown into the frame 2 from each vent 201, and is guided to a certain extent by the guide plate 10 at each vent 201, so that the hot air is blown more concentratedly to the tray 3 for better drying. At the same time, a part of the hot air is blown upward obliquely through the through hole 1001 on the guide plate 10, and blown to the upper tray 3 for drying. While blowing in hot air, start the vibrator 9, and each tray 3 will vibrate between the corresponding connecting rails 5 after being vibrated, and then vibrate the medicinal materials in the tray 3 to prevent the lighter medicinal materials from piling up after being swept by the hot air, and finally achieve the effect of stirring.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot air circulation oven, characterized in that: It includes a box body. Inside the box body, there is a rack, and there is an air cavity between the left and right side walls and the rear side wall of the box body and the rack. A plurality of longitudinally distributed trays are inserted in the rack, and the trays can vibrate at the insertion joints with the rack. A cover plate with first ventilation holes is covered on the upper side of the trays, and a plurality of ventilation openings communicating with the air cavity are opened on the inner wall of the rack.

2. A hot air circulation oven according to claim 1, characterized in that: A vibrator is fixedly connected to the inner wall of the rack.

3. A hot air circulation oven according to claim 1, characterized in that: The tray includes a tray board provided with second ventilation holes. A square frame is fixedly connected to the upper side of the tray board, and connecting blocks are fixedly connected outward on both sides of the square frame. Connecting columns are vertically fixedly connected to each connecting block. Positioning blocks are fixedly connected to both sides of the cover plate corresponding to the connecting blocks, and positioning holes are opened on each positioning block corresponding to the connecting columns. The cover plate is covered on the square frame, and the positioning blocks are sleeved on the connecting columns through the positioning holes.

4. A hot air circulation oven according to claim 3, characterized in that: An annular limiting edge is circumferentially fixedly connected to each connecting column, and the outer surface of the limiting edge is set as an inverted V-shaped structure. The limiting edge is located above the positioning block.

5. The hot air circulation oven according to claim 1, characterized in that: A handle is fixedly connected to the upper side of the cover plate.

6. A hot air circulation oven according to claim 3, characterized in that: C-shaped connecting rails are fixedly connected to the inner walls on the left and right sides of the rack corresponding to the tray board. Both ends of the tray board are inserted into the C-shaped grooves of the connecting rails, and there is a first gap between the end parts of both ends of the tray board and the corresponding C-shaped grooves.

7. A hot air circulation oven according to claim 6, characterized in that: A plurality of springs are fixedly connected to the upper side of the C-shaped groove of each connecting rail. When the tray board is lapped on the lower side wall of the C-shaped groove, there is a second gap between the lower end of the spring and the tray board.

8. A hot air circulation oven according to claim 6, characterized in that: A stop block is vertically provided at the front end of each connecting rail, and the upper end of the stop block is rotatably connected to a T-shaped fixing column fixedly connected above the C-shaped groove, and the lower end crosses the C-shaped groove and freely hangs down.

9. A hot air circulation oven according to claim 1, characterized in that: Ventilation openings are opened on the rack corresponding to the upper side of each tray, and inclined downwardly arranged flow guide plates are fixedly connected to the inner wall of the rack above each row of ventilation openings, and a plurality of through holes are uniformly opened on the flow guide plates.

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