CN115430236A - Air duct heater convenient for replacing filter screen - Google Patents

Abstract

The invention discloses an air duct heater convenient for replacing a filter screen, which comprises an air duct heater body, wherein a box body is arranged on one side of the air duct heater body, openings are formed in one sides of the box body, which are adjacent to the air duct heater body, the other side of the box body is also provided with openings, a plurality of filter screen plates matched with the openings are movably arranged in the box body, a driving assembly is arranged on one side, located in the box body, of the plurality of filter screen plates and used for driving the filter screen plates to move so that the filter screen plates slide in the openings, an automatic material pushing assembly is arranged on the other side, located in the box body, of the plurality of filter screen plates and used for automatically pushing the plurality of filter screen plates to move so that one of the filter screen plates is always in contact with the driving assembly. According to the invention, through the matched use of the driving component and the automatic pushing component, the filter screen plate can be rapidly replaced without a bolt dismounting mode.

Description

An air duct heater for convenient replacement of filter screen

technical field

The invention relates to an air duct heater which is convenient for replacing filter screens, and belongs to the technical field of heating equipment.

Background technique

The air duct electric heater is mainly used to heat the required air flow from the initial temperature to the required air temperature, up to 850°C, and has been widely used in aerospace, weapon industry, chemical industry and colleges and universities And many other scientific research and production laboratories.

In order to prevent dust and other debris from entering the existing air duct heater and damaging the electric heating tube, a filter screen is usually installed at the air inlet end of the air duct heater, but the filter screen will be blocked every once in a while. The filter screen needs to be removed from the air inlet end for cleaning or replacement, and the filter screen is usually fixed in the duct heater by bolts, which is time-consuming and laborious to disassemble.

Therefore, it is necessary to invent a kind of air duct heater that is convenient to replace the filter screen to solve the above problems.

Contents of the invention

In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide an air duct heater that facilitates the replacement of the filter screen, which solves the problem that the existing air duct heater usually prevents dust and other sundries from entering the interior and damaging the electric heating tube. Install a filter at the air inlet end of the air duct heater, but every once in a while, the filter will be clogged, and the filter needs to be removed from the air inlet for cleaning or replacement, and the filter is usually fixed by bolts In the air duct heater, it is time-consuming and labor-intensive to disassemble and assemble.

In order to achieve the above goals, the present invention adopts the following technical solution: an air duct heater for convenient filter replacement, including an air duct heater body, a box body is provided on one side of the air duct heater body, and the box body The side adjacent to the air duct heater body is provided with openings, and the other side of the box is also provided with openings, and a plurality of filter screens matching the openings are movable in the box. A drive assembly is provided on one side of the plurality of filter screens, and the drive assembly is used to drive the filter screen to move so that the filter screen slides in the opening, and the other side of the box is equipped with an automatic The pusher assembly is used for automatically pushing a plurality of filter screen plates to move so that one of the filter screen plates is always in contact with the drive assembly.

As a preferred solution of the present invention, the drive assembly includes two rotating shafts, both ends of the two rotating shafts are rotatably connected between the upper and lower inner walls of the box through bearings, and each of the rotating shafts is fixedly sleeved with a Drive wheels, the two drive wheels are connected by belt transmission, and the upper and lower sides of each drive wheel are symmetrically provided with gears fixedly socketed with the rotating shaft, and each filter screen plate is symmetrically provided with two sets of tooth grooves, every two gears are meshed and connected in a group of tooth grooves.

As a preferred solution of the present invention, the bottom end of one of the rotating shafts passes through the box body and extends to the outside to be connected with a handle.

As a preferred solution of the present invention, one side of the handle is provided with a side plate connected to the box, the side plate is threaded and connected with a screw, and the side wall of the handle is equidistantly provided with multiple the positioning hole.

As a preferred solution of the present invention, the automatic pusher assembly includes a push rod, the side wall of the box is provided with a through hole, the push rod is movably connected in the through hole, and one end of the push rod passes through the through hole A push plate is connected to the inside of the box body, and a spring is connected between the push plate and the inner side wall of the box body, and the spring is sleeved on the push rod.

As a preferred solution of the present invention, the other end of the push rod passes through the through hole and extends to the outside of the box to be connected with a baffle, and the diameter of the baffle is larger than the diameter of the through hole.

As a preferred solution of the present invention, the top of the box body is hinged with a cover plate, the top end of the cover plate is provided with a first fixing plate, the surface of the first fixing plate is provided with a first threaded hole, and the top of the box body is A second fixing plate is provided, and a second threaded hole is opened on the surface of the second fixing plate, and the first fixing plate and the second fixing plate are fixedly connected by bolts passing through the first threaded hole and the second threaded hole .

As a preferred solution of the present invention, a set of limit plates are provided on the upper and lower side walls of the air duct heater body, and each set of limit plates is provided with two, four limit plates and the air duct heater A slideway is formed between the inner walls of the main body for the filter screen to pass through.

As a preferred solution of the present invention, a material receiving frame is provided on the side of the box away from the main body of the air duct heater, and a buffer pad is provided on the surface of the material receiving frame.

In the above-mentioned technical scheme, the technical effects and advantages provided by the present invention:

1. In the present invention, through the combined use of the provided driving assembly and the automatic material pushing assembly, the filter screen can be quickly replaced without disassembling and assembling bolts.

2. The handle provided is convenient for users to operate, and the handle is fixed by turning the screw so that the screw is inserted into the positioning hole, so as to prevent the filter plate moving into the air duct heater body from moving, and the bolt penetrates through the first The first fixing plate and the second fixing plate are fixedly connected together by means of the threaded hole and the second threaded hole, which can facilitate the fixing of the cover plate and facilitate the opening and closing of the cover plate.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the air duct heater body and the box of the present invention;

Fig. 3 is the structural representation of the automatic material pushing assembly of the present invention;

Fig. 4 is an enlarged view of area A of the present invention.

Meanings of reference signs in the figure:

1. Air duct heater body; 11. Limiting plate; 2. Box body; 21. Side plate; 22. Screw; 23. Cover plate; 24. First fixing plate; 25. Second fixing plate; 3. Filtration Stencil; 31, tooth groove; 4, driving assembly; 41, rotating shaft; 411, handle; 412, positioning hole; 42, driving wheel; 43, gear; 5, automatic pusher assembly; 51, push rod; 52, push Plate; 53, spring; 54, baffle plate; 6, receiving frame; 61, buffer pad.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

The present invention provides an air duct heater which is convenient to replace the filter screen as shown in Fig. The adjacent side of the air duct heater body 1 is provided with openings, and the other side of the box body 2 is also provided with openings. A plurality of filter screen plates 3 matching the openings are movable in the box body 2 . A drive assembly 4 is provided on one side of the plurality of filter screen plates 3, and the drive assembly 4 is used to drive the filter screen plates 3 to move so that the filter screen plates 3 slide in the opening. An automatic pusher assembly 5 is provided on the side, and the automatic pusher assembly 5 is used to automatically push a plurality of filter screen plates 3 to move so that one of the filter screen plates 3 is always in contact with the drive assembly 4 .

The driving assembly 4 includes two rotating shafts 41, the two ends of which are connected between the upper and lower inner walls of the box body 2 through bearings, and each rotating shaft 41 is fixedly sleeved with a driving wheel 42, between the two driving wheels 42 Each drive wheel 42 is symmetrically provided with a gear 43 fixedly socketed with the rotating shaft 41 on the upper and lower sides of each driving wheel 42, and two groups of tooth grooves 31 are symmetrically provided on one side of each filter screen plate 3, and each two gears 43 are meshingly connected in a group of tooth grooves 31.

The bottom end of one of the rotating shafts 41 passes through the box body 2 and extends to the outside to be connected with a handle 411 , which can be conveniently operated by the user through the provided handle 411 .

One side of the handle 411 is provided with a side plate 21 connected to the box body 2. The side plate 21 is threaded and connected with a screw rod 22. The side wall of the handle 411 is equidistantly provided with a plurality of positioning holes 412 matching with the screw rod 22. By rotating the screw rod 22 so that the screw rod 22 is inserted into the positioning hole 412 to fix the handle 411, thereby preventing the filter screen plate 3 moving into the air duct heater body 1 from moving.

The automatic pusher assembly 5 includes a push rod 51, the side wall of the box body 2 is provided with a through hole, the push rod 51 is movably connected in the through hole, and one end of the push rod 51 runs through the through hole and extends to the inside of the box body 2 to be connected with a push plate 52 A spring 53 is connected between the push plate 52 and the inner wall of the box body 2 , and the spring 53 is sleeved on the push rod 51 .

The other end of the push rod 51 passes through the through hole and extends to the outside of the box body 2 to connect with a baffle 54. The diameter of the baffle 54 is larger than the diameter of the through hole. The set baffle 54 can prevent the push rod 51 from moving beyond the proper range.

The top of the box body 2 is hinged with a cover plate 23, the top of the cover plate 23 is provided with a first fixed plate 24, the surface of the first fixed plate 24 is provided with a first threaded hole, the top of the box body 2 is provided with a second fixed plate 25, and the second fixed plate 24 is provided with a second fixed plate 25. The surface of the plate 25 is provided with a second threaded hole, and the first fixed plate 24 and the second fixed plate 25 are fixedly connected by bolts passing through the first threaded hole and the second threaded hole, and the bolts penetrate the first threaded hole and the second threaded hole. The first fixing plate 24 and the second fixing plate 25 are fixedly connected together by means of threaded holes, which can facilitate the fixing of the cover plate 23 and facilitate the opening and closing of the cover plate 23 .

A group of limit plates 11 are provided on the upper and lower side walls of the air duct heater body 1, and each set of limit plates 11 is provided with two, and a filter for filtering is formed between the four limit plates 11 and the inner wall of the air duct heater body 1. The slideway through which the screen plate 3 passes can make the filter screen plate 3 more stable and smooth when moving into the air duct heater body 1 through the provided slideway.

The side of the box body 2 away from the air duct heater body 1 is provided with a material receiving frame 6, and the surface of the material receiving frame 6 is provided with a buffer pad 61, and the material receiving frame 6 can be used to accept the filter screen removed from the box body 2 Plate 3, the buffer pad 61 that is provided can avoid that filter screen plate 3 collides with material receiving frame 6 and produce louder sound, and prevents filter screen plate 3 from being knocked bad.

The working principle of the present invention:

Referring to accompanying drawings 1-4 of the specification, when the filter screen plate 3 needs to be replaced, the user rotates the screw 22 to move the screw 22 out of the positioning hole 412, and then rotates the handle 411 to drive one of the rotating shafts 41 to rotate, and the drive on one of the rotating shafts 41 The wheel 42 drives the driving wheel 42 on the other rotating shaft 41 to rotate through the belt, thereby driving the other rotating shaft 41 to rotate, the two rotating shafts 41 rotate simultaneously, and the gears 43 on the two rotating shafts 41 drive the filter screen by meshing with the tooth groove 31 The plate 3 moves, and the filter screen plate 3 moves from the air duct heater body 1 into the box body 2, then moves out from the opening on the other side of the box body 2 and falls on the receiving frame 6, and at the same time, under the action of the spring 53, The push plate 52 drives the remaining filter screen 3 in the box body 2 to move, so that the gear 43 engages in the tooth groove 31 of the filter screen 3 closest to the drive assembly 4, and then reverses the handle 411 to pass through the gear 43 and the tooth groove 31. The meshing way drives the filter screen plate 3 to move, so that the filter screen plate 3 moves into the air duct heater body 1, and the filter screen plate 3 can be replaced quickly without disassembling bolts.

Referring to Figures 1-4 of the specification, when using this device, the handle 411 provided can facilitate the user's operation, and the handle 411 can be fixed by rotating the screw 22 so that the screw 22 is inserted into the positioning hole 412, thereby preventing it from moving to The filter screen plate 3 in the air duct heater body 1 moves, and the set baffle plate 54 can prevent the moving distance of the push rod 51 from exceeding the appropriate range, and the first threaded hole and the second threaded hole are fixed by bolts. The plate 24 and the second fixing plate 25 are fixedly connected together, the cover plate 23 can be fixed conveniently, and the cover plate 23 can be opened and closed conveniently, and the filter screen plate 3 can be moved into the air duct heater body 1 through the provided slideway It is more stable and smooth, and the set material receiving frame 6 can be used to accept the filter screen plate 3 removed from the box body 2, and the set buffer pad 61 can prevent the filter screen plate 3 from colliding with the material receiving frame 6 and cause large sound, and prevent the filter panel 3 from being damaged.

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made. It should also be regarded as the protection scope of the present invention.

Claims (9)

1. An air duct heater for convenient filter replacement, comprising an air duct heater body (1), characterized in that: a box (2) is provided on one side of the air duct heater body (1), the The box body (2) is provided with an opening on one side adjacent to the air duct heater body (1), and the other side of the box body (2) is also provided with an opening. A filter screen plate (3) adapted to the opening, a driving assembly (4) is arranged on one side of the plurality of filter screen plates (3) in the box body (2), and the drive assembly (4) is used for Drive the filter screen plate (3) to move so that the filter screen plate (3) slides in the opening, and the other side of the multiple filter screen plates (3) in the box (2) is provided with an automatic pusher assembly (5) , the automatic pushing component (5) is used to automatically push a plurality of filter screen plates (3) to move so that one of the filter screen plates (3) is always in contact with the drive assembly (4). 2. An air duct heater for convenient filter replacement according to claim 1, characterized in that: the drive assembly (4) includes two rotating shafts (41), and the two rotating shafts (41) Both ends are rotatably connected between the upper and lower inner walls of the box body (2) through bearings, each of the rotating shafts (41) is fixedly sleeved with a driving wheel (42), and the two driving wheels (42) are connected by a belt Transmission connection, the upper and lower sides of each drive wheel (42) are symmetrically provided with gears (43) fixedly socketed with the rotating shaft (41), and each filter screen plate (3) is symmetrically provided with two groups of teeth Slots (31), every two gears (43) are meshed and connected in a group of tooth grooves (31). 3. An air duct heater for convenient filter replacement according to claim 2, characterized in that: the bottom end of one of the rotating shafts (41) passes through the box (2) and extends to the outside to connect with a handle ( 411). 4. An air duct heater for convenient filter replacement according to claim 3, characterized in that: one side of the handle (411) is provided with a side plate (21) connected to the box body (2), so The side plate (21) is threadedly connected with a screw rod (22), and the side wall of the handle (411) is equidistantly provided with a plurality of positioning holes (412) matched with the screw rod (22). 5. The air duct heater for convenient filter replacement according to claim 1, characterized in that: the automatic pusher assembly (5) includes a push rod (51), and the side of the box body (2) The wall is provided with a through hole, and the push rod (51) is movably connected in the through hole, and one end of the push rod (51) passes through the through hole and extends to the inside of the box body (2) to be connected with a push plate (52). A spring (53) is connected between the push plate (52) and the inner wall of the box body (2), and the spring (53) is sleeved on the push rod (51). 6. An air duct heater for convenient filter replacement according to claim 5, characterized in that: the other end of the push rod (51) passes through a through hole and extends to the outside of the box (2) to connect with a baffle (54), the diameter of the baffle (54) is larger than the diameter of the through hole. 7. An air duct heater for convenient filter replacement according to claim 1, characterized in that: the top of the box (2) is hinged with a cover (23), and the top of the cover (23) is provided with There is a first fixed plate (24), the surface of the first fixed plate (24) is provided with a first threaded hole, the top of the box (2) is provided with a second fixed plate (25), and the second fixed plate (25) A second threaded hole is opened on the surface, and the first fixing plate (24) and the second fixing plate (25) are fixedly connected by bolts passing through the first threaded hole and the second threaded hole. 8. The air duct heater for convenient filter replacement according to claim 1, characterized in that: the upper and lower side walls of the air duct heater body (1) are provided with a set of limiting plates (11), Each group of limiting plates (11) is provided with two, and a slideway for the filter screen plate (3) to pass is formed between the four limiting plates (11) and the inner wall of the air duct heater body (1). 9. An air duct heater for convenient filter replacement according to claim 1, characterized in that: the side of the box body (2) away from the air duct heater body (1) is provided with a receiving frame (6 ), the surface of the receiving frame (6) is provided with a buffer pad (61).

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