Improved hot air circulation tunnel furnace

Abstract

The utility model relates to the technical field of hot air circulation, in particular to an improved hot air circulation tunnel furnace, which is provided with a filtering mechanism convenient to disassemble, is convenient to disassemble and clean on the basis of meeting the filtering requirement, and improves the practicability. Comprising a tunnel furnace body, a connecting frame, a fan motor, fan blades, an electric heating pipe, a fixed ring frame, a top ring, a hinge, a closed ring frame, a filtering net piece, a pressing ring and a hot air tunnel, the output end of the top of the tunnel furnace body communicates with the input end of the hot air tunnel, and the middle-rear side of the interior of the tunnel furnace body is connected with the outer side of the fan motor through the connecting frame; a plurality of sets of electric heating pipes are connected to the front side in the tunnel furnace body, the left middle side of the front end of a fixed ring frame is movably connected with the left middle side of the rear end of a closed ring frame through a hinge, the inner ring side of the front end of the fixed ring frame is connected with the rear side of a top ring, and the middle of the inner ring side of the closed ring frame is connected with the outer side of a pressing ring. And the filter mesh is movably mounted on the rear side of the pressing ring in the closed ring frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hot air circulation, specifically to an improved hot air circulation tunnel furnace. BACKGROUND

[0002] In order to adapt to the development of the drying field industry, the production efficiency is improved by adopting the assembly line production mode of the tunnel furnace drying, but a large amount of energy consumption gives birth to the generation of the hot air circulation system, the hot air circulation tunnel furnace utilizes the circulating device to deliver the hot air back into the tunnel furnace for heating again, greatly reducing the energy consumption and developing a new direction in resource utilization.

[0003] The patent specification with the application number CN202020748196.3 discloses a hot air circulation tunnel furnace, which comprises a hot air generator, a fan and a furnace body, the hot air generator and the fan are connected and arranged on the top of the furnace body, and the top of the furnace body is provided with an air inlet channel communicated with the fan; the inside of the furnace body is provided with a first circulating channel, a second circulating channel and a conveyor belt, the first circulating channel is located on the inner side wall of the furnace body and is communicated with the air inlet channel, and the other end extends to the bottom of the conveyor belt; the second circulating channel is located between the first circulating channel and the conveyor belt and is communicated with the air inlet channel; the top and bottom of the conveyor belt are respectively provided with an upper air box and a lower air box along the length direction thereof, the upper air box comprises a plurality of upper air supply pieces and an air supply plate, the plurality of upper air supply pieces are arranged at equal intervals to form a plurality of upper air ducts, the air supply plate is provided with a plurality of air supply holes, and the lower air box comprises a plurality of lower air supply pieces arranged at equal intervals, and the plurality of lower air supply pieces form a plurality of lower air ducts. The device can drive external air to enter during the hot air circulation process, and at the same time, impurities in the air can enter the tunnel furnace to pollute the products, which is not safe enough. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides an improved hot air circulation tunnel furnace which is provided with a filter mechanism convenient to disassemble, meets the basis of filtration, is convenient to disassemble and clean, and improves practicality.

[0006] (II) Technical scheme

[0007] In order to achieve the above object, the utility model provides the following technical scheme: An improved hot air circulation tunnel furnace, including tunnel furnace body, connecting frame, fan motor, fan blade, electric heating tube, fixed ring frame, top ring, hinge, close ring frame, filter screen, pressure ring and hot air tunnel, the tunnel furnace body top output end is linked with hot air tunnel input end intercommunication, tunnel furnace body inside rear side is connected with fan motor outside through connecting frame, fan motor output end is connected with fan blade inner end middle part, tunnel furnace body inside front side is connected with a plurality of electric heating tubes, tunnel furnace body front side is linked with fixed ring frame rear side intercommunication, fixed ring frame front end left middle side is movably connected with close ring frame rear end left middle side through hinge, fixed ring frame front end inner ring side is connected with top ring rear side, close ring frame inner ring side middle part is connected with pressure ring outside, filter screen is movably installed in close ring frame rear side of pressure ring.

[0008] Preferably, it also includes screw groove seat, fixed sheet and fixed bolt, the middle part of the outer side of the fixed ring frame is connected with a group of the inner side of the screw groove seat, the middle part of the upper and lower end of the close ring frame is connected with a group of the inner end of the fixed sheet, and the fixed sheet is movably provided with the fixed bolt.

[0009] Preferably, it also includes handle frame and handle sleeve, the middle part of the front side of the close ring frame is connected with the inner end of the handle frame, and the handle sleeve is sleeved with the outer side of the handle frame.

[0010] Preferably, it also includes fixed seat, and the lower end of the left and right side of the tunnel furnace body is connected with a group of the inner side of the fixed seat.

[0011] Preferably, it also includes external thread mouth and internal thread cover, the rear side of the tunnel furnace body is connected with the inner side of the external thread mouth, and the external thread mouth is detachably screwed with the inner side of the internal thread cover.

[0012] Preferably, it also includes screw handle sheet, and one side of the outer end of the internal thread cover is connected with the inner side of the screw handle sheet.

[0013] (Three) beneficial effects

[0014] Compared with the prior art, the utility model provides an improved hot air circulation tunnel furnace, which has the following beneficial effects:

[0015] The filter screen is installed in the rear side of the pressure ring in the close ring frame, then the close ring frame is closed under the constraint of the hinge, the top ring is supported on the rear side of the filter screen, and the filter screen is fixed in the close ring frame through cooperation of the pressure ring, when running, the electric heating tube generates heat, and under the connection of the connecting frame, the fan motor drives the fan blade to rotate, air flow of the close ring frame is introduced, external dust and impurities are filtered through the filter screen, and hot air flow is formed in the tunnel furnace body and discharged through the hot air tunnel, the filter mechanism is convenient to disassemble, the filter is convenient to disassemble and clean, and practicability is improved. DRAWINGS

[0016] Figure 1 is a schematic view of the structure of the utility model;

[0017] Figure 2 is a front view of the utility model Figure 1 ;

[0018] Figure 3 is a top view of the utility model Figure 1 ;

[0019] Figure 4 is a right view of the utility model Figure 1 .

[0020] In the drawing, mark: 1, tunnel furnace body; 2, connecting frame; 3, fan motor; 4, fan blade; 5, electric heating tube; 6, fixed ring frame; 7, top ring; 8, hinge; 9, close ring frame; 10, filter screen; 11, pressing ring; 12, hot air tunnel; 13, screw groove seat; 14, fixed sheet; 15, fixed bolt; 16, handle frame; 17, handle cover; 18, fixed seat; 19, outer thread mouth; 20, inner thread cover; 21, screw handle sheet. DETAILED DESCRIPTION

[0021] 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 in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0022] EMBODIMENT

[0023] Please refer to Figures 1-4The utility model provides a kind of improved hot air circulation tunnel furnace, including tunnel furnace body 1, connecting frame 2, fan motor 3, fan blade 4, electric heating tube 5, fixed ring frame 6, top ring 7, hinge 8, close ring frame 9, filter screen 10, press ring 11 and hot air tunnel 12, tunnel furnace body 1 top output end is connected with the input end of hot air tunnel 12, and the inside rear side of tunnel furnace body 1 is connected with the outside of fan motor 3 by connecting frame 2, and the inside middle part of fan blade 4 is connected with the output end of fan motor 3, and the front side of tunnel furnace body 1 is connected with the rear side of fixed ring frame 6, and the front end left middle side of fixed ring frame 6 is movably connected with the rear end left middle side of close ring frame 9 by hinge 8, and the inner ring side of front end of fixed ring frame 6 is connected with the rear side of top ring 7, and the inner ring side middle part of close ring frame 9 is connected with the outside of press ring 11, and filter screen 10 is movably installed in the rear side of press ring 11 in close ring frame 9;Filter screen 10 is installed in the rear side of press ring 11 in close ring frame 9, then close ring frame 9 is closed under the constraint of hinge 8, so that top ring 7 is supported in the rear side of filter screen 10, and press ring 11 cooperates to fix filter screen 10 in the mouth position in close ring frame 9, when running, electric heating tube 5 generates heat by running, and fan motor 3 drives fan blade 4 to rotate under the connection of connecting frame 2, to form the air flow of close ring frame 9, filter the external dust and impurities through filter screen 10, and form hot air flow in tunnel furnace body 1 and discharge through hot air tunnel 12.

[0024] It also includes screw groove seat 13, fixed sheet 14 and fixed bolt 15, and the middle part of the upper and lower ends of the outer side of fixed ring frame 6 is connected with a group of inner sides of screw groove seat 13 respectively, and the middle part of the upper and lower ends of close ring frame 9 is connected with a group of inner ends of fixed sheet 14 respectively, and fixed bolt 15 is movably arranged in fixed sheet 14;When close ring frame 9 is closed, screw groove seat 13 and fixed sheet 14 can be corresponded, and then fixed bolt 15 can be screwed into screw groove seat 13 through fixed sheet 14, so that close ring frame 9 is fixed, and the reliability is improved.

[0025] It also includes handle frame 16 and handle sleeve 17, and the inner end of handle frame 16 is connected with the middle part of the front side of close ring frame 9, and handle sleeve 17 is sleeved with the outer side of handle frame 16;Handle frame 16 can be held and contacted through handle sleeve 17, and close ring frame 9 can be opened and closed through handle frame 16, so that the convenience is improved.

[0026] It also includes fixed seat 18, and the lower ends of the left and right sides of tunnel furnace body 1 are connected with a group of inner sides of fixed seat 18 respectively;Two groups of fixed seat 18 can be installed and fixed in corresponding positions, so that tunnel furnace body 1 is connected at the positions, and the stability is improved.

[0027] The outer threaded mouth 19 is connected with the inside of the tunnel furnace body 1, and the inner threaded cover 20 is detachably screwed with the outside of the outer threaded mouth 19.

[0028] The screwing handle 21 is connected with one side of the outer end of the inner threaded cover 20, and the inner threaded cover 20 is rotatably connected with the screwing handle 21, so that the inner threaded cover 20 is conveniently screwed and disassembled.

[0029] In summary, the improved hot air circulating tunnel furnace is used, the filter screen 10 is installed at the rear side of the pressing ring 11 in the closed loop frame 9, then the handle frame 16 is held and contacted through the handle sleeve 17, the closed loop frame 9 is closed under the constraint of the hinge 8, the top ring 7 is supported at the rear side of the filter screen 10, when the closed loop frame 9 is closed, the screw groove seat 13 and the fixed plate 14 are corresponded, then the fixed bolt 15 is screwed into the screw groove seat 13 through the fixed plate 14, the closed loop frame 9 is fixed and closed, and cooperates with the pressing ring 11 to fix the filter screen 10 at the opening position in the closed loop frame 9, when running, the electric heating pipe 5 is run to generate heat, and the fan motor 3 is run to drive the fan blade 4 to rotate under the connection of the connecting frame 2, air flow of the closed loop frame 9 is introduced, external dust and impurities are filtered through the filter screen 10, hot air flow is formed in the tunnel furnace body 1 and is discharged through the hot air tunnel 12, and the tunnel furnace body 1 is connected at the position through the two groups of fixed seats 18, so that the tunnel furnace body 1 is connected at the position, the inner threaded cover 20 is rotatably connected with the screwing handle 21, the tunnel furnace body 1 is protected after the inner threaded cover 20 is fixed on the outside of the outer threaded mouth 19, and the tunnel furnace body 1 is conveniently maintained after the inner threaded cover 20 is disassembled from the outside of the outer threaded mouth 19.

[0030] The fan motor 3 and the electric heating pipe 5 are common devices purchased on the market and known by those skilled in the art, and here, the devices are only used, and are not improved in structure and function, and will not be described in detail.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An improved hot air circulating tunnel furnace, characterized by: The utility model provides a tunnel furnace body (1), connecting frame (2), fan motor (3), fan blade (4), electric heating tube (5), fixed ring frame (9), hinge (8), close ring frame (9), filter screen (10), pressing ring (11) and hot air tunnel (12) are included, the tunnel furnace body (1) top output end is linked with hot air tunnel (12) input end communication, tunnel furnace body (1) inside rear side is connected with the outside of fan motor (3) through connecting frame (2), the output end of fan motor (3) is connected with the inner end middle part of fan blade (4), and the inside front side of tunnel furnace body (1) is connected with multiple electric heating tubes (5), and the front side of tunnel furnace body (1) is connected with the rear side of fixed ring frame (6), and the front end left middle side of fixed ring frame (6) is movably connected with the rear end left middle side of close ring frame (9) through hinge (8), and the inner ring side of front end of fixed ring frame (6) is connected with the rear side of top ring (7), and the inner ring side middle part of close ring frame (9) is connected with the outside of pressing ring (11), and filter screen (10) is movably installed in the rear side of pressing ring (11) in close ring frame (9).

2. The improved hot air circulation tunnel furnace according to claim 1, wherein: It further includes screw groove seat (13), fixed sheet (14) and fixed bolt (15), the middle part of the outside upper and lower end of fixed ring frame (6) is connected with the inside of a group of screw groove seat (13) respectively, and the middle part of the upper and lower end of close ring frame (9) is connected with the inside of a group of fixed sheet (14) respectively, and fixed bolt (15) is movably arranged in the inside of fixed sheet (14).

3. The improved hot air circulation tunnel furnace as claimed in claim 1, wherein: It further includes handle frame (16) and handle sleeve (17), the middle part of the front side of close ring frame (9) is connected with the inside of handle frame (16), and handle sleeve (17) is sleeved on the outside of handle frame (16).

4. The improved hot air circulation tunnel furnace as claimed in claim 1, wherein: It further includes fixed seat (18), and the inside of a group of fixed seat (18) is connected with the lower end of the left and right side of tunnel furnace body (1) respectively.

5. The improved hot air circulation tunnel furnace as claimed in claim 1, wherein: It further includes external thread mouth (19) and internal thread cover (20), and the rear side of tunnel furnace body (1) is connected with the inside of external thread mouth (19) communication, and the inside of internal thread cover (20) is detachably screwed on the outside of external thread mouth (19).

6. The improved hot air circulation tunnel furnace as claimed in claim 5, wherein: It further includes screw handle piece (21), and the inside of screw handle piece (21) is connected with the outside one side of internal thread cover (20).

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