CN207276657U - A kind of annealing energy-saving furnace - Google Patents

Abstract

The utility model discloses a kind of annealing energy-saving furnace,Feed mechanism including furnace body and positioned at furnace body side,The furnace body inner top center is equipped with thermal circulation fan and positioned at the thermal circulation fan both sides or the heater of surrounding,The thermal circulation fan blowing mouth is downward,The overall lower section of the thermal circulation fan and heater is connected with downward opening wind scooper,Both sides are equipped with deflector below the wind scooper,Spacing is equipped between the deflector and the inboard wall of furnace body,And it is equipped with hair-dryer in spacing,Two pieces of deflector opposite sides are respectively equipped with several horizontal positioned flow deflectors,The flow deflector is distributed up and down,Several spouts are additionally provided with the deflector,The spout is respectively arranged on above every piece of flow deflector,The utility model realizes homo genizing annelaing,While improving product quality and production efficiency,Its heat insulation effect achievees the purpose that energy-saving.

Description

An energy-saving annealing furnace

technical field

The utility model relates to the field of annealing furnace equipment, in particular to an energy-saving annealing furnace.

Background technique

Annealing is a heat treatment method in which the forging is heated to a temperature at which phase transformation occurs or partially occurs, and then slowly cooled after heat preservation. The purpose of annealing is to eliminate structural defects, improve the structure to homogenize the composition and refine the grains, improve the mechanical properties of forgings, reduce residual stress; at the same time reduce hardness, improve plasticity and toughness, and improve cutting performance. Therefore, annealing is not only to eliminate and improve the structural defects and internal stress left over from the previous process, but also to prepare for the subsequent process. Therefore, annealing belongs to the heat treatment of semi-finished products, also known as pre-heat treatment. However, generally during the annealing process, due to the difference in the air volume of the circulating air at each position in the furnace, the temperature of the workpiece at each position in the furnace will be different, resulting in unstable product quality.

In view of the above problems, the Chinese patent with the notification number CN205170917U discloses a kind of annealing furnace, which includes a furnace body, an I-shaped fixing frame is arranged in the furnace body, and a circulating air is arranged between the I-shaped fixing frame and the inner wall of the furnace body. The furnace body is provided with a circulating fan and a heating pipe located in the circulating air duct, the heating pipe is located above the circulating fan, and a filter is provided at the upper end of the I-shaped fixing frame. The utility model adopts the way of circulating air duct, the circulating air is sent in from the top, and then returned from the bottom, and a filter is installed so that the air in the furnace body is continuously purified.

However, this solution adopts the method of circulating air duct because the blower is installed at the bottom. After the circulating air reaches the top of the filter, it is difficult to accurately control the air flow downwards into the I-shaped fixing frame, so it may cause uneven air flow velocity in each part. Once The uneven flow rate of the air flow can easily lead to the disorder of the hot air flow in the furnace, that is, the large temperature difference between the upper and lower sides during annealing, and the product quality is difficult to guarantee.

Utility model content

Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an energy-saving annealing furnace, which improves the uniformity of the temperature in the furnace, ensures that the technological requirements of the product are met, and saves energy and reduces consumption.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions:

An energy-saving annealing furnace, comprising a furnace body and a feeding mechanism located on one side of the furnace body, a heat circulation fan and heaters located on both sides or around the heat circulation fan are arranged in the center of the top of the furnace body, the heat circulation fan The blowing port of the circulation fan is downward, and the overall lower part of the heat circulation fan and the heater is connected with an air guide hood with an opening facing downward, and deflectors are arranged on both sides of the lower side of the air guide cover, and the deflectors are connected with the A space is provided between the walls of the furnace body, and a blower is provided in the space.

By adopting the above technical scheme, the material is fed into the furnace body through the feeding mechanism, and the heated air is blown into the bottom of the furnace body through the wind guide hood, and then returned from the bottom, so that the hot air in the furnace body forms regular convection, and its structure strengthens the heater. The degree of coordination between the heat cycle motor and the blower behind the deflectors on both sides adopt the left and right jet flow method to speed up the heating speed and improve the heating uniformity of the materials in the furnace.

Further, the wind guide cover includes a chamfered pyramid-shaped fixed cover and fan blade groups distributed in the fixed cover, and the fan blade groups are distributed in a trumpet shape from top to bottom in the fixed cover.

By adopting the above technical scheme, the horn-shaped divergent distribution of fan blades guides the hot air, improves the heat convection method in the prior art, prevents the phenomenon of uneven air flow velocity in various parts, further ensures uniform temperature distribution, and greatly saves production. cost.

Further, the blade set includes a second blade set arranged vertically, a first blade set and a third blade set located on both sides of the second blade set, the first blade set and The third fan blade group is inclined to the outside of the second fan blade group.

By adopting the above technical solutions, the directions of the fan blades at different positions are further limited, so that the hot air blown out by the thermal cycle motor through the air guide cover can fill the entire enclosed space to form convection.

Further, a fixing piece is provided on the side wall of the furnace body, and the deflector is suspended in the furnace body through the fixing piece, and is parallel to the side wall of the furnace body.

By adopting the above technical scheme, a circulating air channel M is formed in the furnace body under the limitation of the path of the air guide cover and the deflector plate, forming regular convection, and its detachable structure is convenient for staff to install and repair.

Further, several horizontal deflectors are respectively arranged on the opposite sides of the two deflectors, the deflectors are distributed up and down, and several nozzles are provided on the deflectors, and the nozzles are respectively set above each deflector.

By adopting the above technical scheme and adopting the jet flow on the left and right sides, the circulating air is directly sprayed from the nozzle to the surface of the material in layers, which effectively increases the heating speed, shortens the heating time, and then reduces energy consumption.

Further, the feeding mechanism includes a guide rail placed on a horizontal plane, a feeding table is provided on the guide rail, and the bottom of the feeding table is equipped with traveling wheels slidingly connected with the guide rail, and annealed bricks are also provided on the feeding table.

By adopting the above technical scheme, the guide rail and the walking wheel cooperate to realize fast in, fast out and slow positioning during feeding and unloading, which facilitates the transportation and operation of materials and improves production efficiency, and annealed bricks are placed on the feeding table for isolation Thermal insulation.

Further, the furnace body includes a side wall insulation wall and a furnace door installed on one side of the feeding mechanism, and a sealing strip is provided between the insulation wall and the furnace door.

By adopting the above technical scheme, when the furnace door is closed, the sealing strip is compressed to achieve an airtight sealing effect, reduce heat loss, and ensure the heat preservation effect of the annealing furnace.

Further, the thermal insulation wall is composed of an outer wall panel, an inner wall panel, and thermal insulation cotton filled between the outer wall panel and the inner wall panel, and the outer wall panel, thermal insulation cotton, and inner wall panel are arranged from outside to inside They are connected in sequence, and the thermal insulation cotton is compacted through the outer wall board and the inner wall board.

By adopting the above technical scheme, bolts are used to fix the outer wall panels and inner wall panels and the thermal insulation cotton is compacted, and the thermal insulation capacity of the thermal insulation cotton is used to block the heat transfer in the thermal insulation cotton, preventing the thermal insulation cotton from loosening and leaving gaps to cause heat loss. It greatly reduces the heat lost through the conduction of the insulation wall, highlighting the energy-saving concept of green environmental protection.

In summary, the utility model has the following beneficial effects:

1. Through the sliding connection of the feeding mechanism, the fast movement and slow positioning during feeding are realized, which facilitates the transportation of materials, saves manpower and material resources, and improves production efficiency;

2. The good sealing performance of the annealing furnace is ensured through the sealing cooperation of the insulation wall, the furnace door and the sealing strip, and the three-layer structure of the insulation wall further blocks the transfer of heat, which has the advantage of good insulation effect;

3. The hot air is directional convected along the circulating air duct through the path restriction of the air guide hood on the furnace top and the deflectors on both sides to ensure that the heating temperature inside the furnace body is evenly distributed. To the surface of the material, the heating time is greatly shortened and the energy loss is reduced.

Description of drawings

Fig. 1 is the overall structure schematic diagram of a kind of energy-saving annealing furnace of the present utility model;

Fig. 2 is the structural representation of feeding mechanism in a kind of energy-saving annealing furnace of the utility model;

Fig. 3 is a schematic structural view of the furnace body part in an energy-saving annealing furnace of the present invention;

Fig. 4 is a structural cross-sectional view of the furnace body part along the A-A direction in Fig. 1 .

In the figure: 1, feeding mechanism; 11, guide rail; 12, feeding table; 13, annealed brick; 14, walking wheel; 2, furnace body; 21, insulation wall; 211, outer wall panel; 212, inner wall panel; 213 , thermal insulation cotton; 22, furnace door; 23, sealing strip; 3, heater; 4, heat circulation fan; 5, wind guide cover; 51, fixed cover; 52, first fan blade group; 54, the third fan blade group; 6, deflector; 61, fixing piece; 62, deflector; 63, spout; 7, blower.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail.

An energy-saving annealing furnace, as shown in FIGS. 1 to 3 , includes a feeding mechanism 1 for feeding materials into the annealing furnace and a furnace body 2 connected with the feeding mechanism 1 . The feeding mechanism 1 includes a guide rail 11 placed on a horizontal plane. The guide rail 11 extends from one side of the furnace body 2 to the inside of the furnace body 2. A feeding table 12 is placed on the guide rail 11. A walking wheel 14 is installed at the bottom of the feeding table 12. The guide rail 11 and the The walking wheels 14 cooperate to realize fast in and out movement and slow positioning during loading and unloading, which facilitates the transportation of materials and saves a lot of manpower and material resources. An annealed brick 13 is placed on the feeding table 12 for heat insulation, highlighting the energy-saving concept of green environmental protection.

As shown in Figures 1 and 3, the body of furnace 2 is formed by connecting the insulation wall 21. A furnace door 22 is installed on the side of the body of furnace 2 located at the feeding mechanism 1. In order to ensure the good sealing performance of the annealing furnace, the insulation wall 21 and the furnace Sealing strips 23 are embedded between the doors 22 for pressure-tight fit. As shown in Figure 4, the thermal insulation wall 21 is made up of the outer wall board 211, the inner wall board 212 and the insulation cotton 213 filled between the outer wall board 211 and the inner wall board 212, and the outer wall board 211, the inner wall board 212. The insulation cotton 213 is connected in sequence from outside to inside, and locked by a screw. One end of the screw is welded and fixed on the inner side of the outer wall panel 211 vertically, and the other end passes through the insulation cotton 213 and the inner wall panel 212 and is connected with a nut, and tightened The nut can compact the insulation cotton 213 and lock the fixed inner wallboard 212, and block the transfer of heat by the insulation cotton 213, greatly reducing the heat loss from the furnace wall heat conduction, further ensuring the heat preservation effect of the annealing furnace.

As shown in Fig. 3 and Fig. 4, a heater 3 and a heat circulation blower 4 are installed in the center of the inner top of the furnace body 2, and the heater 3 is located on both sides or around the heat circulation blower 4. In this embodiment of the utility model, with Two heaters 3 are taken as an example for illustration, and the two heaters 3 are respectively located on both sides of the thermal circulation fan 4 and on both sides in the direction of the guide rail 11 . The blowing port of the thermal circulation fan 4 is downward, and the whole of the thermal circulation fan 4 and the heater 3 is covered with a wind guide 5 , and the opening of the wind guide 5 is downward. The air guide cover 5 includes a fixed cover 51 and a fan blade group distributed in the fixed cover 51, the fixed cover 51 is chamfered, and the fan blade group includes a vertically arranged second fan blade group 53 and a fan blade group located in the second fan. The first fan blade group 52 and the third fan blade group 54 on both sides of the blade group 53, the first fan blade group 52 and the third fan blade group 54 are inclined to the outside of the second fan blade group 53, so that the first fan blade group 52. The second blade set 53 and the third blade set 54 are divergently distributed in a trumpet shape from top to bottom in the fixed cover 51 . The hot air blown out from the thermal circulation fan 4 is directed and blown out by the first blade set 52 , the second blade set 53 , and the third blade set 54 along the ventilation paths between adjacent blades.

As shown in Fig. 1, Fig. 3 and Fig. 4, a fixing part 61 is installed on the side wall of the body of furnace 2, and a vertical deflector 6 is arranged on both sides of the air outlet of the thermal circulation fan 4, and the deflector 6 passes through The fixing part 61 is suspended in the furnace body 2 . The wind deflector 5 on the top of the body of furnace 2 and the deflector 6 on the side wall of the body of furnace 2 make the hot air blown out from the heat circulation fan 4 form a circulation air duct M that blows from the top and returns air from the bottom, and the heat supply circulation fan 4 The generated hot air flows in an orderly manner, so that the temperature distribution inside the furnace body 2 is uniform, and at the same time, this structure facilitates the disassembly and maintenance of the deflector 6 . There is a space between the deflector 6 and the side wall of the body of heater 2 and two blowers 7 are housed to place in this space. As shown in Figure 4, several deflectors 62 extend laterally from opposite sides of the two deflectors 6, and the deflectors 62 are distributed up and down, and several nozzles 63 are also opened on the deflectors 6, and the nozzles 63 correspond to each other. It is arranged on the top of each deflector 62, adopts the way of jet flow on the left and right sides, and the circulating air is directly sprayed from the nozzle 63 to the surface of the material in layers, which effectively improves the heating speed, shortens the heating time, and reduces energy consumption.

Working process: The material is transported to the inside of the furnace body 2 through the feeding table 12, the furnace door 22 is closed to form a closed space, the heater 3 and the heat circulation fan 4 are turned on, and the heated air is blown out from the air guide hood 5 at the top of the furnace body 2 , the circulating air channel M is formed under the limitation of the path of the air guide cover 5 and the deflector plate 6, and the hot air is sent in from the top, and then returned from the bottom, so that the hot air in the furnace body 2 forms a regular convection, and at the same time, the two sides are guided The blower 7 behind the flow plate 6 sprays left and right, accelerates the heating rate, further improves the heating uniformity of the materials in the furnace, and effectively saves energy.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (8)

1. a kind of annealing energy-saving furnace, including furnace body（2）And positioned at the furnace body（2）The feed mechanism of side（1）, its feature exists In：The furnace body（2）Inner top center is equipped with thermal circulation fan（4）And positioned at the thermal circulation fan（4）Both sides or surrounding Heater（3）, the thermal circulation fan（4）Blowing mouth is downward, the thermal circulation fan（4）And heater（3）Overall lower section It is connected with downward opening wind scooper（5）, the wind scooper（5）Lower section both sides are equipped with deflector（6）, the deflector（6）With The furnace body（2）Spacing is equipped between inner wall, and hair-dryer is equipped with spacing（7）.

A kind of 2. annealing energy-saving furnace according to claim 1, it is characterised in that：The wind scooper（5）Including falling prismatic table shape Fixed cover（51）And it is distributed in the fixed cover（51）Interior flabellum group, the flabellum group is in the fixed cover（51）It is interior from up to It is lower to be distributed into horn-like diverging.

A kind of 3. annealing energy-saving furnace according to claim 2, it is characterised in that：The flabellum group includes the be vertically arranged Two flabellum groups（53）With positioned at the second flabellum group（53）First flabellum group of both sides（52）And the 3rd flabellum group（54）, it is described First flabellum group（52）With the 3rd flabellum group（54）To the second flabellum group（53）Outside tilts.

A kind of 4. annealing energy-saving furnace according to claim 3, it is characterised in that：The furnace body（2）Side wall wall is equipped with Fixing piece（61）, the deflector（6）Pass through fixing piece（61）Hang on furnace body（2）It is interior, and and furnace body（2）Side wall is parallel.

A kind of 5. annealing energy-saving furnace according to claim 4, it is characterised in that：Two pieces of deflectors（6）Opposite side point She You not several horizontal positioned flow deflectors（62）, the flow deflector（62）Distribution up and down, the deflector（6）On be additionally provided with Several spouts（63）, the spout（63）It is respectively arranged on every piece of flow deflector（62）Top.

A kind of 6. annealing energy-saving furnace according to claim 5, it is characterised in that：The feed mechanism（1）Including being placed in water Guide rail in plane（11）, the guide rail（11）It is equipped with feeding table（12）, the feeding table（12）Bottom is equipped with traveling wheel （14）With guide rail（11）It is slidably connected, the feeding table（12）On be additionally provided with annealing brick（13）.

A kind of 7. annealing energy-saving furnace according to claim 6, it is characterised in that：The furnace body（2）Insulation including side wall Wall（21）With installed in feed mechanism（1）The fire door of side（22）, the insulated wall（21）With fire door（22）Between be equipped with sealing Bar（23）.

A kind of 8. annealing energy-saving furnace according to claim 7, it is characterised in that：The insulated wall（21）By Side fascia （211）, lining（212）And it is filled in the Side fascia（211）With lining（212）Between heat-preservation cotton（215）Composition, The Side fascia（211）, heat-preservation cotton（215）, lining（212）Connect successively from outside to inside, and pass through the Side fascia（211） And lining（212）It is compacted heat-preservation cotton（215）.