CN104195312B - Variable volume heat treatment furnace - Google Patents
Variable volume heat treatment furnace Download PDFInfo
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- CN104195312B CN104195312B CN201410454992.5A CN201410454992A CN104195312B CN 104195312 B CN104195312 B CN 104195312B CN 201410454992 A CN201410454992 A CN 201410454992A CN 104195312 B CN104195312 B CN 104195312B
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Abstract
本发明实施例公开了一种可变容积热处理炉，包括炉体、炉门、后墙、炉车和中央处理器。炉体的前端设有与中央处理器电连接的定滑轮机构，炉门与定滑轮机构固定连接并通过定滑轮机构进行升降。炉车的下部、靠近炉体两侧壁的两个边侧设置的第一密封装置用于将炉车两个端面与炉体的两侧壁密封。炉体的底部设有沿炉体前后方向延伸的导轨，后墙的底部设有导向轮组；后墙的下部设有挂钩；在炉车进入炉体设定长度后，后墙移动直至与炉车的端面相贴并通过挂钩与炉车连接。后墙外围设有使后墙与炉体顶部、炉体两侧壁及炉车端面密封的第二密封装置。炉门上设有在炉车进入炉体设定长度且炉门降至炉车的上表面时将炉门与炉体密封的第三密封装置。
The embodiment of the invention discloses a heat treatment furnace with variable volume, which includes a furnace body, a furnace door, a rear wall, a furnace car and a central processing unit. The front end of the furnace body is provided with a fixed pulley mechanism electrically connected to the central processing unit, and the furnace door is fixedly connected with the fixed pulley mechanism and lifted by the fixed pulley mechanism. The first sealing device provided on the lower part of the furnace car and the two sides close to the two side walls of the furnace body is used to seal the two end faces of the furnace car and the two side walls of the furnace body. The bottom of the furnace body is provided with guide rails extending along the front and rear directions of the furnace body, and the bottom of the rear wall is provided with guide wheels; the lower part of the rear wall is provided with hooks; The end faces of the car are attached and connected with the furnace car through a hook. The outer periphery of the rear wall is provided with a second sealing device for sealing the rear wall with the top of the furnace body, the side walls of the furnace body and the end faces of the furnace car. The furnace door is provided with a third sealing device that seals the furnace door and the furnace body when the furnace car enters the furnace body to a predetermined length and the furnace door falls to the upper surface of the furnace car.
Description
Technical Field
The invention relates to the field of heat treatment, in particular to a heat treatment furnace with a variable volume.
Background
The heat treatment furnace is a general term for an industrial furnace for performing various metal heat treatments on metal workpieces. The heat treatment furnace is often heated by using a gas fuel, and the requirements on furnace atmosphere factors such as furnace temperature and furnace pressure are strict. For example, the temperature change of the heat treatment is required to be smooth in temperature rise and fall, and the temperature deviation is not more than +/-10 ℃.
Most of the existing heat treatment furnaces in the market are constant-volume heat treatment furnaces, namely, the volume of the furnace body of the heat treatment furnace for heat treatment is fixed. The fixed volume of the heat treatment furnace has the following problems:
on the one hand, when the number of the processed workpieces is less than the rated required number, a part of the space in the volume of the heat treatment furnace is left unused, resulting in waste of dead space. Although the number of workpieces to be processed during heat treatment is small, the parameters such as the furnace temperature and pressure required for heat treatment of the workpieces by the heat treatment furnace are the same as those for processing a rated number of workpieces, and therefore, from the viewpoint of energy utilization, the smaller the number of workpieces to be processed at one time by the heat treatment furnace, the greater the amount of energy wasted.
On the other hand, when the size of the processed workpiece changes with the requirements of the production process and the size of the workpiece is larger than the volume of the furnace body, the heat treatment furnace cannot realize the heat treatment of the large workpiece.
Disclosure of Invention
Aiming at the defects of the conventional constant-volume heat treatment furnace, the invention provides the heat treatment furnace which has variable volume, can adapt to workpieces with different sizes and/or quantities and can improve the energy utilization rate.
The purpose of the invention is realized by the following technical scheme: a variable volume heat treatment furnace comprises a furnace body, a furnace door arranged at the front end of the furnace body, a rear wall arranged at the rear end of the furnace body, a furnace carriage capable of walking and a central processing unit,
the front end of the furnace body is provided with a fixed pulley mechanism which is electrically connected with a central processing unit, and the furnace door is fixedly connected with the fixed pulley mechanism and is lifted through the fixed pulley mechanism;
the lower part of the furnace carriage and two sides close to two side walls of the furnace body are provided with first sealing devices which are electrically connected with the central processing unit and are used for sealing the end surfaces of the two sides of the furnace carriage with the two side walls of the furnace body after the furnace door is in a lifting state and the furnace carriage enters the furnace body for a set length;
the bottom of the furnace body is provided with a guide rail extending along the front-back direction of the furnace body, and the bottom of the rear wall is provided with a guide wheel set; the lower part of the rear wall is provided with a hook; after the furnace carriage enters the furnace body for a set length, the rear wall moves towards the furnace carriage until the rear wall is attached to the end face of the furnace carriage, and the rear wall is fixedly connected with the furnace carriage through the hook; the periphery of the rear wall is provided with a second sealing device which seals the rear wall with the top of the furnace body, two side walls of the furnace body and the end surface of the furnace carriage, and the second sealing device is electrically connected with the central processing unit;
and the furnace door is provided with a third sealing device electrically connected with the central processing unit and used for sealing the furnace door and the furnace body when the furnace carriage enters the furnace body for a set length and the furnace door is lowered to the upper surface of the furnace carriage.
Preferably, the furnace car comprises a support plate, a front longitudinal beam and a rear longitudinal beam, wherein the front longitudinal beam and the rear longitudinal beam are used for supporting the support plate and are connected through a connecting shaft;
the lower part of the front longitudinal beam is provided with a main motor wheel set and a speed reducer which is used for controlling the movement of the main motor wheel set and is electrically connected with the central processor; and a driven wheel set is arranged at the lower part of the rear longitudinal beam.
Furthermore, two ends of the connecting shaft are also provided with positioning devices, and each positioning device comprises a shaft sleeve, a connecting plate and a positioning plate which are sequentially arranged along the direction from the axis of the connecting shaft to the end part of the connecting shaft;
the shaft sleeve at one end of the connecting shaft is fixed on the front longitudinal beam, the shaft sleeve at the other end of the connecting shaft is fixed on the rear longitudinal beam, and the centers of the two shaft sleeves are overlapped; the connecting plate and the positioning plate are fixed on the shaft sleeve through bolts.
Preferably, the first sealing means comprises:
the first sealing boxes are arranged on the left side and the right side of the front longitudinal beam and have the same length as the front longitudinal beam;
the second cylinder is arranged at the lower part of the first sealing box, and a piston rod of the second cylinder is fixedly connected with the first sealing box;
the second sealing boxes are arranged on the left side and the right side of the rear longitudinal beam and have the same length as the front longitudinal beam;
and the third cylinder is arranged at the lower part of the second sealing box, and a piston rod of the third cylinder is fixedly connected with the second sealing box.
The rear wall comprises a wall body and a wall body mounting support, the wall body is mounted on the inner side face of the wall body mounting support, the second sealing device is arranged on the outer side face of the wall body mounting support, and the guide wheel set is mounted at the bottom of the wall body mounting support.
The second sealing device includes:
the furnace top sealing cylinder seat is arranged at the upper part of the wall body mounting bracket, a fourth cylinder and a furnace top sealing fiber box connected with a piston cylinder of the fourth cylinder are arranged on the furnace top sealing cylinder seat, and the length of the furnace top sealing fiber box is the same as the width of the furnace body;
the side seal box supports are arranged on two sides of the wall body mounting support, a fifth air cylinder and a side seal box connected with a piston cylinder of the fifth air cylinder are mounted on the side seal box supports, and the length of the side seal box is the same as the height between the upper surface of the furnace carriage and the lower surface of the top of the furnace body;
the spring compression sealing device arranged at the lower part of the wall body mounting support comprises a compression spring fixed on the wall body mounting support and a sealing block connected to the end part of the compression spring, the upper end face of the sealing block is attached to the lower end face of the wall body in a sealing mode, and the front side face of the sealing block is attached to the end face of the furnace car.
Preferably, the fixed pulley mechanism includes: the pulley support frame and a single fixed pulley block and a double fixed pulley block which are arranged on the pulley support frame; wherein,
the pulley support frame comprises a first furnace door column, a second furnace door column and a furnace door lifting beam; the first furnace door column and the second furnace door column are fixedly sealed at two sides of the front end of the furnace body, the heights of the first furnace door column and the second furnace door column are greater than the height of the furnace body, and the furnace door lifting beam is fixedly connected with the top of the first furnace door column and the top of the second furnace door column;
the single fixed pulley blocks are symmetrically arranged at two sides of the center of the furnace door lifting beam; the double fixed pulley blocks are arranged on one side of the furnace door lifting beam close to the first furnace door column or the second furnace door column;
an electric hoist mounting frame is arranged below one side of the furnace door lifting beam provided with the double fixed pulley blocks, and an electric hoist electrically connected with the central processing unit is mounted on the electric hoist mounting frame;
one end of a steel wire rope in the single fixed pulley block is fixedly connected with the upper part of the furnace door, and the other end of the steel wire rope is connected with the electric hoist after passing through the double fixed pulley blocks.
Preferably, one end of the steel wire rope in the single fixed pulley block is fixedly connected with the pin shaft shackle at the upper part of the furnace door through a steel wire rope clamp.
Preferably, the third sealing means comprises:
elastic sealing strips arranged on the left side and the right side of the outer side face of the furnace door and on the top of the inner side face of the furnace door;
furnace gate hold-down mechanism includes: the lever support seat is arranged at the left end part and the right end part of the pressing rod; one end of the lever is connected with the first cylinder, and the other end of the lever is fixedly connected with the rear end face of the pressing rod;
the front end surface of the pressing rod is connected with the outer side surface of the furnace door.
Furthermore, a sixth air cylinder electrically connected with the central processing unit is further arranged on the wall mounting support, and a piston rod of the sixth air cylinder is connected with the hook.
According to the technical scheme, the length of the furnace carriage entering the furnace body is determined according to the number of the to-be-processed workpieces and the occupied space of the to-be-processed workpieces, the furnace carriage is connected with the position determined through the movable rear wall, the furnace door is dropped and is in sealed contact with the upper surface of the furnace carriage, the capacity of the furnace chamber of the heat treatment furnace is changed along with the change of the to-be-processed workpieces, and therefore the problems that a large amount of invalid space is wasted when the large-size furnace chamber processes small-sized workpieces, and large-sized workpieces cannot be subjected to heat treatment due to small furnace bodies can be effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view showing the structure of a variable volume heat treatment furnace according to the present invention;
FIG. 2 is a front view of an oven door shown in accordance with a preferred embodiment;
FIG. 3 is a schematic diagram illustrating a third seal according to a preferred embodiment;
FIG. 4 is a schematic structural view of a furnace carriage according to a preferred embodiment;
FIG. 5 is a cross-sectional view taken along the line C-C in FIG. 4;
FIG. 6 is a schematic structural view of the rear wall shown in accordance with a preferred embodiment;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;
fig. 8 is a cross-sectional view taken along the direction C-C in fig. 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows a schematic view of the structure of a variable volume heat treatment furnace of the present invention. As shown in fig. 1, the heat treatment furnace includes a furnace body 1, a furnace door 2, a furnace carriage 3, a rear wall 4, and a cpu (not shown).
The furnace door 2 is arranged at the front end of the furnace body 1, the front end of the furnace body 1 is provided with a fixed pulley mechanism electrically connected with the central processing unit, and the furnace door 2 is fixedly connected with the fixed pulley mechanism and is lifted under the control of the central processing unit through the fixed pulley mechanism, so that the front end of the furnace body is opened and closed.
The furnace body 1 is a main constituent part of a furnace chamber of a heat treatment furnace. Figure 2 is a front view of an oven door shown in accordance with a preferred embodiment. As shown in FIG. 2, the furnace body 1 has a door-shaped longitudinal section. As a preferred embodiment of the embodiments, the fixed pulley mechanism in the present application includes a pulley support frame and a single fixed pulley block 204 and a double fixed pulley block 205 mounted on the pulley support frame. Wherein, the pulley support frame comprises a first furnace door column 201, a second furnace door column 202 and a furnace door lifting beam 203. The first furnace door post 201 and the second furnace door post 202 are fixedly sealed at two sides of the front end of the furnace body 1, and the heights of the first furnace door post 201 and the second furnace door post 202 are greater than that of the furnace body 1. The oven door lifting beam 203 fixedly connects the top of the first oven door column 201 and the top of the second oven door column 202. Two sets of the single crown block 204 are preferably selected and symmetrically arranged at two sides of the center of the oven door lifting beam 203, and the double crown block 205 is arranged at one side of the oven door lifting beam 203 close to the first oven door post 201 or the second oven door post 202. An electric hoist mounting frame 206 is arranged below the first furnace door post 201 or the second furnace door post 202 on one side of the double fixed pulley blocks 205 arranged on the furnace door lifting beam 203, the electric hoist mounting frame 206 is used for mounting an electric hoist 207, and the electric hoist 207 is electrically connected with the central processing unit. The upper part of the oven door is provided with a plurality of pin shaft shackles 208, one end of a steel wire 209 in each group of single fixed pulley blocks 204 is fixedly connected with the pin shaft shackles 208 on the upper part of the oven door through a steel wire clamp 210, and the other end of the steel wire in each group of single fixed pulley blocks 204 is connected with an electric hoist 207 through a double fixed pulley block 205. After the electric block 207 is started, the electric block 207 lifts the oven door through the steel wire 209 of the single crown block 204. Preferably, in the present embodiment, the height of the furnace door to be lifted is higher than the height of the workpiece processed on the furnace body 1 or the furnace carriage.
In the present application, the side of the furnace door facing the furnace body 1 is the inner side of the furnace door, and the side opposite to the inner side, i.e., the side facing the outside of the heat treatment furnace is the outer side of the furnace door. Preferably, the furnace door is provided with a third sealing device for sealing the furnace door and the furnace body 1 when the furnace carriage enters the furnace body 1 for a set length and the furnace door is lowered to the upper surface of the furnace carriage. Fig. 3 is a schematic structural view illustrating a third sealing device according to a preferred embodiment. As shown in fig. 3, the third sealing means includes the following structure: elastic sealing strips (not shown in the figure) are arranged on the left side and the right side of the outer side surface of the furnace door and on the top of the inner side surface of the furnace door. And the furnace door pressing mechanism is arranged on the outer side surface of the furnace door. The oven door pressing mechanism comprises a pressing rod 301 and lever supporting seats 302 respectively arranged at the left end and the right end of the pressing rod 301. A lever 303 is arranged on each lever supporting seat, one end of the lever 303 is connected with a first air cylinder 304, and the other end of the lever 303 is connected with the rear end face of the pressing rod 301. The front end surface of the pressing rod is connected with the outer side surface of the furnace door. When the furnace door falls down and needs to be sealed, the first air cylinder 304 pushes the lever 303, the lever 303 pushes the pressing rod 301, and the pressing rod 301 acts on the furnace door, so that the elastic sealing strips at the top of the furnace door and the top of the furnace body 1, the elastic sealing strips at the left side and the right side of the furnace door and the first furnace door post 201 and the second furnace door post 202 at the two sides of the furnace body 1 are sealed. The front, rear, left, and right end surfaces of the pressing rod 301 are based on the direction of the pressing rod toward the furnace body, and are for convenience of explanation only, and are not intended to limit the direction of the pressing rod.
Preferably, the lower end surface of the furnace door is made of refractory sealing material, and when the furnace door is lowered onto the upper surface of the furnace carriage, the furnace door can realize the sealing of the lower end surface of the furnace door and the upper surface of the furnace carriage under the action of the gravity of the furnace door.
The furnace carriage 3 in this embodiment is a self-traveling device. Fig. 4 is a schematic structural view of a furnace car according to a preferred embodiment. As shown in fig. 4, the furnace carriage 3 includes a support plate 401, a front side member 402 for supporting the support plate, and a rear side member 403. Preferably, the front and rear side members are connected by a connecting shaft 404. Furthermore, in order to align the front longitudinal beam and the rear longitudinal beam, positioning devices are additionally arranged at two ends of the connecting shaft. Fig. 5 is a cross-sectional view taken along the direction C-C in fig. 4. as can be seen from fig. 5, the positioning device includes a bushing 501, a connecting plate 502 and a positioning plate 503. The shaft sleeve, the connecting plate and the positioning plate are sequentially arranged along the direction from the axis of the connecting shaft to the end part of the connecting shaft. The axle sleeve of connecting axle one end is fixed in on the front longitudinal, and the axle sleeve of the connecting axle other end is fixed in on the back longeron, and the center coincidence of diaxon cover to make the center of front longitudinal and back longeron align. The connecting plate and the positioning plate are fixed on the shaft sleeve through bolts, so that the front longitudinal beam and the rear longitudinal beam are tightly attached to each other.
The lower part of the front longitudinal beam is provided with a driving wheel set 405, a driven wheel set 406 and a speed reducer 407 which is used for controlling the movement of the driving wheel set and is electrically connected with the central processing unit. The speed reducer is electrically connected with the central processing unit. The left side and the right side of the front longitudinal beam are also provided with first sealing boxes (not shown in the figure) with the same length as the front longitudinal beam, and the lower part of each first sealing box is provided with a second air cylinder (not shown in the figure) for driving the first sealing box to move.
The lower part of the rear longitudinal beam is also provided with a driving wheel set 405 and a driven wheel set 406. The left side and the right side of the rear longitudinal beam are also provided with second sealing boxes (not shown in the figure) with the same length as the rear longitudinal beam, and the lower part of each second sealing box is provided with a third air cylinder (not shown in the figure) for driving the second sealing box to move.
The piston rod of the first sealing box is fixedly connected with the second cylinder of the first sealing box; the second sealing box, a piston rod of the second sealing box and a third cylinder fixedly connected with the second sealing box form a first sealing device of the furnace car.
In the present application, the direction in which the furnace carriage advances is defined as the front-rear direction of the front side member and the rear side member, and the direction horizontally perpendicular to the direction in which the furnace carriage advances is defined as the left-right direction.
The furnace car realizes the self-walking function under the control of the speed reducer. When the workpiece to be processed needs to be subjected to heat treatment, the workpiece to be processed is loaded on the upper surface of the furnace car. The furnace carriage enters the furnace body 1 from the outside of the furnace, and the upper surface of the furnace carriage forms the bottom surface of the furnace chamber of the heat treatment furnace. After the furnace carriage reaches the designated position, the first sealing boxes on the two sides of the front longitudinal beam and the second sealing boxes on the two sides of the rear longitudinal beam are pushed by the corresponding cylinders to seal the left and right side end faces of the furnace carriage with the side walls of the furnace body 1.
The rear wall 4 is installed at a rear end opposite to the door 2. Fig. 6 is a schematic structural view illustrating a rear wall according to a preferred embodiment, fig. 7 is a sectional view taken along a-a direction of fig. 6, and fig. 8 is a sectional view taken along C-C direction of fig. 6. As shown in fig. 6, 7 and 8, the rear wall 4 includes a wall 601 and a wall mounting bracket 602. The bottom of the wall body mounting bracket 602 is provided with a guide wheel set 603, the bottom of the furnace body 1 is provided with a guide rail (not shown in the figure) which extends along the front-back direction of the furnace body 1 and has a length larger than that of the furnace body 1, the wall body mounting bracket 602 realizes the movement of the wall body in the furnace body 1 in the rolling of the guide wheel set along the guide rail, and the wall body can stay at any position in the furnace body 1.
The surface of the wall body mounting bracket facing the furnace body 1 is the inner side surface of the wall body mounting bracket, and the surface opposite to the inner side surface, namely the surface facing the outside of the heat treatment furnace is the outer side surface of the wall body mounting bracket. The wall 601 is mounted on the inner side of the wall mounting bracket. The surface of the wall 601 opposite to the inner side of the wall mounting bracket 602 is the outer side of the wall, and the surface facing the furnace body 1 is the inner side.
The lower portion of the rear wall, i.e., the lower portion of the wall mounting bracket, is provided with a hook 604. After the furnace carriage 3 enters the furnace body 1 and the inner side surface of the wall body of the rear wall is attached to the end surface of the furnace carriage, the rear wall is fixedly connected with the furnace carriage through the hook 604. The furnace car 3 moves to drive the rear wall to move to a designated position. When the furnace carriage 3 is discharged, the hook 604 is released, the rear wall is left in place, and the furnace carriage 3 is freely moved in and out.
And a second sealing device for sealing the rear wall, the top of the furnace body 1, two side walls of the furnace body 1 and the end surface of the furnace carriage is arranged on the periphery of the rear wall, and the second sealing device is electrically connected with the central processing unit. Specifically, the method comprises the following steps: the upper part of the wall body mounting bracket is provided with a furnace top sealing cylinder seat 605, and the furnace top sealing cylinder seat is provided with a fourth cylinder 606 and a furnace top sealing fiber box 607 connected with a piston cylinder of the fourth cylinder. The furnace top sealing fiber box 607 is driven by the fourth cylinder 606 to move up and down. The length of the furnace top sealing fiber box is the same as the width of the furnace body 1 in the left-right direction, and one surface of the furnace top sealing fiber box is hermetically attached to the outer side surface of the wall body. After the rear wall enters the furnace body 1, the top surface of the furnace top sealing fiber box is opposite to the top surface of the furnace body 1, the furnace top sealing fiber box moves upwards after the fourth cylinder is started, the top surface of the furnace top sealing fiber box is attached to the top of the furnace body 1, and the sealing between the rear wall body and the top of the furnace body 1 is realized.
And side seal box supports 608 are arranged on two sides of the wall mounting support, a fifth air cylinder 609 and a side seal box 610 connected with a piston cylinder of the fifth air cylinder are mounted on the side seal box supports 608, and the length of the side seal box is equal to the height between the upper surface of the furnace carriage and the lower surface of the top of the furnace body 1. The lower side seal box is moved in the left-right direction by the fifth cylinder 609. One side of the side seal box is hermetically attached to the outer side face of the wall body, the surface opposite to the side wall of the furnace body 1 moves to the side wall of the furnace body 1 after the fifth cylinder is started and is hermetically attached to the side wall of the furnace body 1, and therefore the rear wall body and the side wall of the furnace body 1 are sealed.
The lower part of the wall body mounting bracket is provided with a spring compression sealing device 611, and the spring compression sealing device comprises a compression spring fixed on the wall body mounting bracket and a sealing block connected at the end part of the compression spring. The upper end face of the sealing block is hermetically attached to the lower end face of the wall 601, and the front side face of the sealing block is attached to the end face of the furnace car. After the furnace carriage is fixedly connected with the wall body mounting bracket, the end face of the furnace carriage extrudes the compression sealing block, and a spring in the spring compression sealing device forms a reaction force on the end face of the furnace carriage when being extruded, so that the compression sealing block is attached to the end face of the furnace carriage in a sealing manner.
Preferably, the wall mounting bracket is further provided with a sixth cylinder 612 electrically connected with the central processing unit, and a piston rod of the sixth cylinder is connected with the hook and used for pushing the hook 604 when the inner side surface of the rear wall body is in contact with the end surface of the furnace carriage, so that the rear wall and the furnace carriage are automatically connected.
The operation of the variable volume heat treatment furnace of the present invention will be explained in detail.
When the workpiece to be processed needs to be processed, the workpiece to be processed is loaded on the upper surface of the furnace carriage outside the furnace, then the furnace carriage is pushed into the furnace body 1 from the front end of the furnace body 1, and the length of the furnace carriage entering the furnace body 1 is determined by the length of the workpiece to be processed placed on the furnace carriage in the front-back direction of the furnace body 1. When the position of the furnace carriage entering the furnace body 1 is determined, the rear wall is moved to move towards the furnace carriage along the slide rail at the bottom of the furnace body 1 and is fixedly connected with the furnace carriage through the hook after contacting with the end surface of the furnace carriage, and meanwhile, the spring compression sealing device at the lower part of the rear wall realizes automatic sealing when the spring compression sealing device and the furnace carriage are connected. After the rear wall is connected with the furnace car, the furnace door falls down through the pulley mechanism, and then a second cylinder and a third cylinder for a first sealing box and a second sealing box at the bottom of the furnace car, a fourth cylinder and a fifth cylinder for a furnace top sealing fiber box and a side sealing box on a wall body mounting bracket of the rear wall and a furnace door pressing mechanism for a furnace door sealing device are simultaneously started, so that the furnace chamber of the heat treatment furnace enclosed by the furnace door, two side walls of the furnace body 1 and the rear wall is sealed. After the furnace chamber is sealed, the workpiece to be treated in the furnace chamber can be subjected to heat treatment.
According to the technical scheme, the length of the furnace carriage entering the furnace body is determined according to the number of the to-be-processed workpieces and the occupied space of the to-be-processed workpieces, the furnace carriage is connected with the position determined through the movable rear wall, the furnace door is dropped and is in sealed contact with the upper surface of the furnace carriage, the capacity of the furnace chamber of the heat treatment furnace is changed along with the change of the to-be-processed workpieces, and therefore the problems that a large amount of invalid space is wasted when the large-size furnace chamber processes small-sized workpieces, and large-sized workpieces cannot be subjected to heat treatment due to small furnace bodies can be effectively solved.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. A variable volume heat treatment furnace comprises a furnace body (1), a furnace door (2) arranged at the front end of the furnace body (1), a rear wall (4) arranged at the rear end of the furnace body (1), a furnace carriage (3) capable of walking and a central processing unit, and is characterized in that,
the front end of the furnace body (1) is provided with a fixed pulley mechanism which is electrically connected with a central processing unit, and the furnace door (2) is fixedly connected with the fixed pulley mechanism and is lifted through the fixed pulley mechanism;
the lower part of the furnace carriage (3) and two sides close to two side walls of the furnace body (1) are provided with first sealing devices electrically connected with the central processing unit, and the first sealing devices are used for sealing the end surfaces of the two sides of the furnace carriage (3) with the two side walls of the furnace body (1) after the furnace door (2) is in a lifting state and the furnace carriage (3) enters the furnace body (1) for a set length;
the bottom of the furnace body (1) is provided with a guide rail extending along the front-back direction of the furnace body (1), and the bottom of the rear wall (4) is provided with a guide wheel set; the lower part of the rear wall (4) is provided with a hook; after the furnace carriage (3) enters the furnace body (1) for a set length, the rear wall (4) moves towards the furnace carriage (3) until the rear wall is attached to the end face of the furnace carriage (3), and the rear wall (4) is fixedly connected with the furnace carriage (3) through the hook; the periphery of the rear wall (4) is provided with a second sealing device which seals the rear wall (4) with the top of the furnace body (1), two side walls of the furnace body (1) and the end surface of the furnace carriage (3), and the second sealing device is electrically connected with the central processing unit;
the furnace door (2) is provided with a third sealing device which is electrically connected with the central processing unit and is used for sealing the furnace door (2) and the furnace body (1) when the furnace car (3) enters the furnace body (1) for a set length and the furnace door (2) is lowered to the upper surface of the furnace car (3);
the furnace car (3) comprises a supporting plate (401), a front longitudinal beam (402) and a rear longitudinal beam (403) which are used for supporting the supporting plate, wherein the front longitudinal beam (402) and the rear longitudinal beam (403) are connected through a connecting shaft;
the lower part of the front longitudinal beam is provided with a main motor wheel set (405) and a speed reducer (407) which is used for controlling the movement of the main motor wheel set and is electrically connected with the central processing unit; a driven wheel group (406) is arranged at the lower part of the rear longitudinal beam;
the rear wall (4) comprises a wall body (601) and a wall body mounting support (602), the wall body (601) is mounted on the inner side face of the wall body mounting support (602), the second sealing device is arranged on the outer side face of the wall body mounting support (602), and the guide wheel set is mounted at the bottom of the wall body mounting support (602).
2. The variable-volume heat treatment furnace according to claim 1, wherein positioning devices are further arranged at two ends of the connecting shaft, and each positioning device comprises a shaft sleeve (501), a connecting plate (502) and a positioning plate (503) which are sequentially arranged along the direction from the axis of the connecting shaft to the end part of the connecting shaft;
a shaft sleeve (501) at one end of the connecting shaft is fixed on the front longitudinal beam (402), a shaft sleeve at the other end of the connecting shaft is fixed on the rear longitudinal beam (403), and the centers of the two shaft sleeves (501) are overlapped; the connecting plate (502) and the positioning plate (503) are fixed on the shaft sleeve through bolts.
3. The variable volume heat treatment furnace of claim 1 or 2, wherein the first sealing means comprises:
the first sealing boxes are arranged on the left side and the right side of the front longitudinal beam and have the same length as the front longitudinal beam;
the second cylinder is arranged at the lower part of the first sealing box, and a piston rod of the second cylinder is fixedly connected with the first sealing box;
the second sealing boxes are arranged on the left side and the right side of the rear longitudinal beam and have the same length as the front longitudinal beam;
and the third cylinder is arranged at the lower part of the second sealing box, and a piston rod of the third cylinder is fixedly connected with the second sealing box.
4. The variable volume heat treatment furnace of claim 1, wherein the second sealing means comprises:
the furnace top sealing cylinder seat is arranged at the upper part of the wall body mounting bracket, a fourth cylinder and a furnace top sealing fiber box connected with a piston cylinder of the fourth cylinder are arranged on the furnace top sealing cylinder seat, and the length of the furnace top sealing fiber box is the same as the width of the furnace body (1);
the side seal box supports are arranged on two sides of the wall body mounting support, a fifth air cylinder and a side seal box connected with a piston cylinder of the fifth air cylinder are mounted on the side seal box supports, and the length of the side seal box is the same as the height between the upper surface of the furnace carriage (3) and the lower surface of the top of the furnace body (1);
the spring compression sealing device arranged at the lower part of the wall body mounting support comprises a compression spring fixed on the wall body mounting support and a sealing block connected to the end part of the compression spring, the upper end face of the sealing block is attached to the lower end face of the wall body in a sealing mode, and the front side face of the sealing block is attached to the end face of the furnace car (3).
5. The variable volume heat treatment furnace of claim 1, wherein the fixed pulley mechanism comprises: the pulley support frame, a single fixed pulley block (204) and a double fixed pulley block (205) are arranged on the pulley support frame; wherein,
the pulley support frame comprises a first furnace door column (201), a second furnace door column (202) and a furnace door lifting beam (203); the furnace door lifting beam (203) is fixedly connected with the top of the first furnace door column (201) and the top of the second furnace door column (202);
the single fixed pulley blocks (204) are symmetrically arranged at two sides of the center of the furnace door lifting beam (203); the double fixed pulley blocks (205) are arranged on one side of the furnace door lifting beam (203) close to the first furnace door column (201) or the second furnace door column (202);
an electric hoist mounting rack (206) is arranged below one side of the furnace door lifting beam (203) provided with the double fixed pulley blocks (205), and an electric hoist (207) electrically connected with the central processing unit is mounted on the electric hoist mounting rack (206);
one end of a steel wire rope (209) in the single fixed pulley block (204) is fixedly connected with the upper part of the furnace door (2), and the other end of the steel wire rope (209) is connected with the electric hoist (207) after passing through the double fixed pulley blocks (205).
6. The variable volume heat treatment furnace according to claim 5, characterized in that one end of the wire rope (209) in the single crown block (204) is fixedly connected with a pin shackle (208) at the upper part of the furnace door (2) through a wire rope clamp (210).
7. The variable volume heat treatment furnace of claim 5 or 6, wherein the third sealing means comprises:
elastic sealing strips are arranged on the left side and the right side of the outer side surface of the furnace door (2) and the top of the inner side surface of the furnace door (2);
furnace gate hold-down mechanism includes: the pressing device comprises a pressing rod (301), lever supporting seats (302) arranged at the left end and the right end of the pressing rod (301), and levers (303) arranged on the lever supporting seats (302); one end of the lever (303) is connected with the first cylinder (304), and the other end of the lever is fixedly connected with the rear end face of the pressing rod (301);
the front end surface of the pressing rod (301) is connected with the outer side surface of the furnace door (2).
8. The variable-volume heat treatment furnace according to claim 1 or 4, wherein the wall mounting bracket (602) is further provided with a sixth cylinder (612) electrically connected with the central processing unit, and a piston rod of the sixth cylinder (612) is connected with the hook (604).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410454992.5A CN104195312B (en) | 2014-09-01 | 2014-09-01 | Variable volume heat treatment furnace |
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| CN201410454992.5A CN104195312B (en) | 2014-09-01 | 2014-09-01 | Variable volume heat treatment furnace |
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| CN104195312A CN104195312A (en) | 2014-12-10 |
| CN104195312B true CN104195312B (en) | 2017-05-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107447078B (en) * | 2017-09-05 | 2024-01-23 | 国网河南省电力公司三门峡供电公司 | A vacuum annealing furnace door structure that adopts top opening and pneumatic sealing |
| CN108707736B (en) * | 2018-08-10 | 2024-03-19 | 河南天利热工装备股份有限公司 | Sealing structure of variable-volume furnace |
| CN108775809A (en) * | 2018-08-10 | 2018-11-09 | 河南天利热工装备股份有限公司 | A kind of combustion type transfiguration stove |
| CN109708466A (en) * | 2019-01-22 | 2019-05-03 | 武汉重工铸锻有限责任公司 | Variable-capacity tunnel-type connecting rod heating furnace and heating method |
| CN110468272B (en) * | 2019-08-30 | 2021-02-09 | 武汉一冶钢结构有限责任公司 | Large-scale heat treatment furnace with movable variable volume |
| CN114721259B (en) * | 2022-03-10 | 2024-05-28 | 燕山大学 | Furnace body variable volume control method |
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| CN204080029U (en) * | 2014-09-01 | 2015-01-07 | 宜宾富源发电设备有限公司 | Variable volume heat treatment furnace |
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| JP3378974B2 (en) * | 1995-12-28 | 2003-02-17 | 同和鉱業株式会社 | Metal heat treatment equipment |
| CN101435015B (en) * | 2008-11-19 | 2011-01-19 | 南京宝色股份公司 | Trolley type annealing furnace |
| CN202119255U (en) * | 2011-03-31 | 2012-01-18 | 江苏苏能环保科技有限公司 | Capacity-changeable heating furnace body |
| CN202671592U (en) * | 2012-07-09 | 2013-01-16 | 丹阳市江南工业炉有限公司 | Ultra-large type trolley type gas heat treatment furnace with movable back wall |
| CN102703650B (en) * | 2012-07-09 | 2013-07-31 | 丹阳市江南工业炉有限公司 | Super-large trolley type gas heat treatment furnace |
| CN203298599U (en) * | 2013-05-03 | 2013-11-20 | 湖州恒辉工业炉有限公司 | Sectional variable-capacity trolley heat treatment furnace |
| CN203501778U (en) * | 2013-10-21 | 2014-03-26 | 哈尔滨铭阳炉业有限公司 | Variable volume trolley type gas-fired thermal treatment furnace |
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| CN204080029U (en) * | 2014-09-01 | 2015-01-07 | 宜宾富源发电设备有限公司 | Variable volume heat treatment furnace |
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Denomination of invention: Variable volume heat treatment furnace Granted publication date: 20170503 Pledgee: Sichuan Changning Zhuhai Rural Commercial Bank Co.,Ltd. Pledgor: YIBIN FUYUAN EQUIPMENT OF POWER GENERATION Co.,Ltd. Registration number: Y2026980013475 |
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