CN215832401U

CN215832401U - Electric heating oven

Info

Publication number: CN215832401U
Application number: CN202121799636.9U
Authority: CN
Inventors: 张勇民
Original assignee: Wujiang Jing Yuan Electrical Co ltd
Current assignee: Wujiang Jing Yuan Electrical Co ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2022-02-15
Anticipated expiration: 2031-08-03

Abstract

The application discloses an electric heating oven, which comprises an oven body, a heating assembly and a conveying belt; the oven body comprises a support frame, a lower box body, an upper box body and a driving mechanism, wherein the lower box body is arranged on the support frame, the front end, the rear end and the upper end of the lower box body are both of an open structure, and the front end, the rear end and the lower end of the upper box body are both of an open structure; the left and right side walls of the upper box body are arranged on the left and right side walls of the lower box body in a vertically sliding manner, and a drying tunnel with front and rear ends being open is defined between the lower box body and the upper box body; the driving mechanism is arranged on the lower box body, can drive the upper box body to slide when being started, and can limit the sliding of the upper box body when being closed; the conveying belt is arranged on the supporting frame, and the two ends of the conveying belt penetrate through the drying tunnel from front to back; the heating assembly is arranged in the drying channel and is positioned above the conveying belt. The electric heating oven has the advantages of simple structure and reasonable layout, and can change the height of the drying tunnel in time according to the height of the workpiece on the conveying belt, improve the space occupancy rate in the drying tunnel, further improve the heat efficiency of the electric heating oven and reduce the energy consumption.

Description

Electric heating oven

Technical Field

The application relates to the field of drying equipment, in particular to an electric heating oven.

Background

The electric heating oven adopts a new energy-saving and environment-friendly heating technology, the electric heating tube is heated by the power supply to generate a heat source, then circulating air is formed inside the oven by the air blower to achieve uniform temperature, and workpieces are conveyed to the inside of the oven through the conveying belt to be dried, so that the effect of quick drying is obtained, and the aims of shortening the production period, saving energy, improving the product quality and the like are achieved.

However, the existing electric heating oven mainly has the following defects: 1. because the height of the oven is fixed, if the workpieces placed on the conveyor belt are shorter, the space occupancy rate in the oven is lower, the heat efficiency is low, and the energy consumption is high; 2. because the work piece is placed on the conveyer belt, the bottom of work piece is difficult for contacting with the inside high-temperature gas of oven, causes the bottom of work piece to dry inadequately easily.

SUMMERY OF THE UTILITY MODEL

An aim at of this application provides a simple structure, and is rationally distributed, and dries effectual electric heat oven to work piece bottom.

Another purpose of this application is in simple structure, rationally distributed, and height-adjustable's oven.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: an electric heating oven comprises an oven body, a heating assembly and a conveying belt;

the oven body comprises a support frame, a lower box body, an upper box body and a driving mechanism, wherein the lower box body is arranged on the support frame, the front end, the rear end and the upper end of the lower box body are both of an open structure, and the front end, the rear end and the lower end of the upper box body are both of an open structure; the left side wall and the right side wall of the upper box body are arranged on the left side wall and the right side wall of the lower box body in a vertically sliding mode, and a drying tunnel with front and rear ends being open is defined between the lower box body and the upper box body; the driving mechanism is arranged on the lower box body, the upper box body can be driven to slide up and down when the driving mechanism is started, and the upper box body can be limited to slide up and down when the driving mechanism is closed;

the conveying belt is arranged on the supporting frame, and two ends of the conveying belt penetrate through the drying tunnel along the front-back direction; the heating assembly is arranged in the drying tunnel and is positioned above the conveying belt.

Preferably, the conveying belt is a porous structure or a net structure. The advantages are that: the contact area between the bottom of the workpiece and the air in the drying tunnel can be increased, and therefore the drying effect on the bottom of the workpiece is improved.

Preferably, the drying device further comprises a circulating air duct system, wherein the circulating air duct system comprises an air box, a ventilation pipe and a fan, the air box is arranged at the outer bottom of the lower box body, and the air box is communicated with the drying duct through the ventilation pipe; the fan is arranged in the air box, a through hole penetrates downwards from the inner bottom of the lower box body, the through hole is located right above the fan, and the fan blows air into the drying channel through the through hole. The advantages are that: under the action of the circulating air duct system, air can be blown upwards from the bottom of the drying tunnel, so that the drying effect on the bottom of the workpiece can be further improved.

Preferably, a protective cover is arranged in the through hole. The advantages are that: the protection casing can be right the fan protects, prevents that the foreign matter from passing through the through-hole falls into in the bellows, right the fan causes the damage.

Preferably, the ventilation pipe is of a telescopic structure, one end of the ventilation pipe is communicated with the air box, and the other end of the ventilation pipe is communicated with the drying tunnel through the top of the upper box body. The advantages are that: because the air temperature at the top in the drying tunnel is highest, high-temperature air can be sucked into the air box through the ventilation pipe and then blown out from the through hole, and therefore the drying efficiency of the bottom of the workpiece is accelerated; and because the ventilation pipe is of a telescopic structure, the interference on the up-and-down sliding adjustment of the upper box body can be avoided.

Preferably, the ventilation pipe includes interior sleeve pipe, outer tube, first communicating pipe and second communicating pipe, the one end of first communicating pipe is passed through go up the top of box with the drying tunnel intercommunication, the other end communicate in the upper end of outer tube, sliding connection about the lower extreme of outer tube in interior sheathed tube upper end, interior sheathed tube lower extreme passes through the second communicating pipe with bellows intercommunication. The advantages are that: high-temperature gas at the top in the drying channel is sucked into the air box, so that the drying efficiency of the bottom of the workpiece is accelerated; and because the lower end of the outer sleeve is connected with the upper end of the inner sleeve in a vertically sliding manner, the interference on vertically sliding adjustment of the upper box body can be avoided.

Preferably, both ends all are equipped with the sealing member around the drying tunnel, the lower extreme horizontal slip of sealing member set up in on the support frame, just the lower extreme of sealing member with the top of conveyer belt. The advantages are that: when the workpieces on the conveying belt need to enter and exit the drying tunnel, the workpieces can pass through the sealing piece by sliding; when no workpiece needs to enter or exit the drying tunnel, the front end and the rear end of the drying tunnel can be closed by sliding the sealing piece, so that the heat loss is reduced, and the energy consumption is further reduced.

Preferably, the sealing member includes a first sealing plate and a second sealing plate, the lower ends of the first sealing plate and the second sealing plate are all arranged on the support frame in a left-right sliding manner, and the first sealing plate and the second sealing plate are arranged side by side. The advantages are that: through the first sealing plate and the horizontal slip of second sealing plate can form the run-to-run structure, open and close during the drying tunnel, operating speed is fast, and weak point consuming time is favorable to improving the transmission efficiency of conveyer belt to shorten the interval that the drying tunnel was opened, further reduce thermal loss.

Preferably, both ends all upwards extend and are equipped with the connecting plate around the box down, the upper end level of connecting plate to the inboard direction of drying tunnel extends the limiting plate, the limiting plate is used for the restriction the lower extreme of going up the box drops the upper end of box down. The advantages are that: the limiting plate can limit the lower end of the upper box body to fall off the upper end of the lower box body.

Preferably, a driving part is arranged at the upper end of the limiting plate and used for driving the first sealing plate and the second sealing plate to slide. The advantages are that: the driving piece can automatically control the automatic opening or closing of the first sealing plate and the second sealing plate.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the height of the drying tunnel can be changed according to the height of the workpieces placed on the conveying belt and the height of the upper box body is automatically adjusted through the driving mechanism, so that the height of the drying tunnel is matched with the height of the workpieces, the space occupancy rate of the drying tunnel is improved, the heat efficiency of the electric heating oven is improved, and the energy consumption is reduced;

(2) the conveying belt is of a porous structure or a net structure, so that the contact area between the bottom of the workpiece and the air in the drying tunnel is increased, and the drying effect on the bottom of the workpiece is improved;

(3) under the action of the circulating air duct system, air can be blown upwards from the bottom of the drying tunnel, so that the drying effect on the bottom of the workpiece can be further improved.

Drawings

FIG. 1 is a perspective view of an electric oven (state one);

FIG. 2 is a perspective view of the electric oven (state two);

FIG. 3 is a top view of an electrically heated oven;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

fig. 5 is a schematic view of the through hole and the shield.

In the figure: 1. a baking oven body; 10. a drying tunnel; 11. a support frame; 111. a limiting chute; 12. a lower box body; 121. a through hole; 122. a connecting plate; 123. a limiting plate; 13. an upper box body; 14. a seal member; 141. a first sealing plate; 142. a second sealing plate; 15. a drive mechanism; 2. a heating assembly; 3. a conveyor belt; 4. a circulating air duct system; 41. an air box; 42. a fan; 43. a vent pipe; 431. an inner sleeve; 432. an outer sleeve; 433. a first communication pipe; 434. a second communicating pipe; 5. a protective cover; 6. a drive member.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1-5, an electric heating oven comprises an oven body 1, a heating assembly 2, a conveyor belt 3, a circulating air duct system 4, a protective cover 5 and a driving piece 6;

oven body 1 includes support frame 11, lower box 12, goes up box 13, actuating mechanism 15 and sealing member 14, and lower box 12 sets up on support frame 11, and both ends and upper end are open structure around lower box 12, and both ends and lower extreme are open structure around going up box 13. The left and right side walls of the upper box body 13 are arranged on the left and right side walls of the lower box body 12 in a vertically sliding manner, and a drying tunnel 10 with front and rear ends being open is defined between the lower box body 12 and the upper box body 13; the conveyer belt 3 is arranged on the support frame 11, and two ends of the conveyer belt 3 penetrate through the drying tunnel 10 along the front-back direction; the heating assembly 2 is disposed inside the drying tunnel 10 and above the conveyor belt 3. The driving mechanism 15 is arranged on the outer wall of the lower box body 12, and when the driving mechanism 15 is started, the upper box body 13 can be driven to slide up and down, so that the height of the drying tunnel 10 can be adjusted in time according to the height of the workpiece, the height of the drying tunnel 10 is matched with the height of the workpiece, the space occupancy rate in the drying tunnel 10 is further improved, the heat efficiency of the electric heating oven is improved, and the energy consumption is reduced. Furthermore, the upper case 13 is restricted from sliding up and down when the driving mechanism 15 is closed, so that the height of the drying tunnel 10 is maintained. The driving mechanism 15 is preferably a hydraulic cylinder or a lead screw lifter, and can precisely control the upper box body 13 to slide up and down after being started, and can lock the upper box body 13 when being closed, so that the upper box body 13 is prevented from automatically sliding down under the action of self gravity. Two sealing pieces 14 are respectively arranged at the front end and the rear end of the drying tunnel 10; each sealing member 14 includes a first sealing plate 141 and a second sealing plate 142, the lower ends of the first sealing plate 141 and the second sealing plate 142 are slidably disposed on the supporting frame 11 from left to right (as shown in fig. 1 and 2, the first sealing plate 141 and the second sealing plate 142 can only slide from left to right under the limit of the limit sliding groove 111), and the first sealing plate 141 and the second sealing plate 142 are disposed side by side; when the first sealing plate 141 and the second sealing plate 142 are close to each other, the drying tunnel 10 (as shown in fig. 1) is closed, so that the loss of heat in the drying tunnel 10 is reduced, the heating efficiency of the drying tunnel 10 is improved, and the energy consumption of the electric heating oven is reduced; when the first sealing plate 141 and the second sealing plate 142 are far away from each other, the drying tunnel 10 is opened, so that the workpiece can normally pass through the drying tunnel; moreover, the split structure formed between the first sealing plate 141 and the second sealing plate 142 can operate the first sealing plate 141 and the second sealing plate 142 at the same time when the drying tunnel 10 is opened and closed, and compared with a single sealing plate, the time can be shortened by half, that is, the operation speed when the drying tunnel 10 is opened and closed is faster, the time consumption is shorter, and the improvement of the transmission efficiency of the conveyor belt 3 is facilitated, so that the time interval when the drying tunnel 10 is opened (that is, when a workpiece enters and exits the drying tunnel 10) is shortened, and further the loss of heat is further reduced. In addition, the front end and the rear end of the lower box 12 are both provided with a connecting plate 122 extending upwards, the upper end of the connecting plate 122 horizontally extends towards the inner side of the drying tunnel 10 to form a limiting plate 123, the limiting plate 123 can limit the lower end of the upper box 13 from falling off the upper end of the lower box 12, so as to prevent the upper box 13 from separating from the lower box 12 due to improper operation. In addition, the driving member 6 may be disposed at the upper end of the limiting plate 123, or may be disposed on the supporting frame 11 or the limiting chute 111; the driving member 6 is preferably an air cylinder, which has a simple principle and structure, is easy to install and maintain, and is fast in operation, so that the sliding of the first sealing plate 141 and the second sealing plate 142 can be rapidly driven, thereby further shortening the time interval when the drying tunnel 10 is opened or closed. It should be noted that the first sealing plate 141 and the second sealing plate 142 should be slightly higher than the upper surface of the conveyer belt 3 to avoid interference with the conveying of the conveyer belt 3.

The circulating air duct system 4 comprises an air box 41, a ventilation pipe 43 and a fan 42, wherein the air box 41 is arranged at the outer bottom of the lower box body 12, and the air box 41 is communicated with the drying tunnel 10 through the ventilation pipe 43. Fan 42 sets up in the inside of bellows 41, and the interior bottom of lower box 12 is run through downwards and is equipped with through-hole 121, and through-hole 121 is located fan 42 directly over, and protection casing 5 is embedded in through-hole 121, can protect fan 42, prevents that the foreign matter from falling into bellows 41 through-hole 121 to cause the damage to fan 42. In addition, the conveyer belt 3 is preferably a porous structure or a mesh structure, so that on one hand, the contact area between the bottom of the workpiece and the air inside the drying tunnel 10 can be increased, and on the other hand, the ventilation capacity of the conveyer belt 3 can be increased, thereby further improving the drying effect and the drying efficiency on the bottom of the workpiece.

As shown in fig. 4, the ventilation duct 43 includes an inner duct 431, an outer duct 432, a first communication duct 433, and a second communication duct 434, one end of the first communication duct 433 is communicated with the drying tunnel 10 through the top of the upper box 13, the other end is communicated with the upper end of the outer duct 432, the lower end of the outer duct 432 is connected to the upper end of the inner duct 431 in a vertically sliding manner, and the lower end of the inner duct 431 is communicated with the air box 41 through the second communication duct 434. According to the principle of thermal expansion and cold contraction, the temperature of the gas at the top in the drying tunnel 10 is the highest, and after the fan 42 is started, the high-temperature gas at the top in the drying tunnel 10 is sucked into the air box 41 through the first communicating pipe 433, the outer sleeve 432, the inner sleeve 431 and the second communicating pipe 434 in sequence, and then is upwards blown into the drying tunnel 10 through the through hole 121, so that the drying efficiency of the bottom of the workpiece is accelerated. Because the lower end of the outer sleeve 432 is connected to the upper end of the inner sleeve 431 in a vertically sliding manner, when the upper box 13 slides up and down, the outer sleeve 432 slides along with the upper box 13, and in the sliding process, the lower end of the outer sleeve 432 is always in contact with the upper end of the inner sleeve 431, so that mutual interference between the air intake of the air box 41 and the sliding of the upper box 13 is avoided.

Obviously, the ventilation pipe 43 may also be of a telescopic structure, one end of which is communicated with the air box 41, and the other end of which is communicated with the drying tunnel 10 through the top of the upper box body 13, so that the interference caused by the up-and-down sliding adjustment of the upper box body 13 can be avoided while the high-temperature air at the top in the drying tunnel 10 is sucked into the air box 41.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. The utility model provides an electric heat oven, includes oven body, heating element and conveyer belt, its characterized in that:

2. The electrically heated oven of claim 1, wherein the conveyor belt is a porous structure or a mesh structure.

3. The electrothermal oven of claim 2, further comprising a circulating air duct system, wherein the circulating air duct system comprises an air box, a ventilation pipe and a fan, the air box is arranged at the outer bottom of the lower box body, and the air box is communicated with the oven tunnel through the ventilation pipe; the fan is arranged in the air box, a through hole penetrates downwards from the inner bottom of the lower box body, the through hole is located right above the fan, and the fan blows air into the drying channel through the through hole.

4. An electrically heated oven as claimed in claim 3 wherein a protective shield is provided within the through hole.

5. The electrothermal oven of claim 3, wherein the ventilation tube is of a telescopic structure, and one end of the ventilation tube is communicated with the air box, and the other end of the ventilation tube is communicated with the oven tunnel through the top of the upper box body.

6. The electrothermal oven according to claim 3, wherein the vent pipe comprises an inner sleeve, an outer sleeve, a first communicating pipe and a second communicating pipe, one end of the first communicating pipe is communicated with the oven tunnel through the top of the upper box body, the other end of the first communicating pipe is communicated with the upper end of the outer sleeve, the lower end of the outer sleeve is connected to the upper end of the inner sleeve in a vertically sliding manner, and the lower end of the inner sleeve is communicated with the air box through the second communicating pipe.

7. The electrothermal oven of any one of claims 1 to 6, wherein the front end and the rear end of the drying tunnel are provided with sealing members, the lower ends of the sealing members are arranged on the support frame in a left-right sliding manner, and the lower ends of the sealing members are arranged above the conveying belt.

8. The electrothermal oven of claim 7, wherein the sealing member comprises a first sealing plate and a second sealing plate, the lower ends of the first sealing plate and the second sealing plate are slidably disposed on the support frame from side to side, and the first sealing plate and the second sealing plate are disposed side by side.

9. The electrothermal oven of claim 8, wherein the front end and the rear end of the lower oven body are both provided with a connecting plate extending upwards, the upper end of the connecting plate horizontally extends towards the inner side of the oven tunnel to form a limiting plate, and the limiting plate is used for limiting the lower end of the upper oven body from falling off the upper end of the lower oven body.

10. The electrothermal oven of claim 9, wherein the limiting plate is provided at an upper end thereof with a driving member for driving the first sealing plate and the second sealing plate to slide.