CN216245584U

CN216245584U - Vacuum heating furnace

Info

Publication number: CN216245584U
Application number: CN202123019460.3U
Authority: CN
Inventors: 崔学文
Original assignee: Liaoning Saint Wright Petrochemical Equipment Co ltd
Current assignee: Liaoning Saint Wright Petrochemical Equipment Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-04-08
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a vacuum heating furnace which comprises a heating furnace main body and a furnace cover, wherein mounting plates are symmetrically mounted on the side surface of the heating furnace main body, a threaded rod shaft is mounted on each mounting plate, one end of each threaded rod shaft is connected with the output end of a servo motor, a connecting frame is fixedly connected to the center of the top surface of the furnace cover, transmission rods are symmetrically mounted on the bottom surface of the connecting frame, lifting blocks are symmetrically mounted on the side surfaces of the transmission rods, nuts are mounted in the lifting blocks and are mutually meshed with the threaded rod shafts, a second connecting ring is mounted at the top end of the heating furnace main body, a sealing groove is formed in the second connecting ring, a first connecting ring is mounted at the bottom end of the furnace cover, a vacuum sealing piece is mounted on the first connecting ring, and the vacuum sealing piece is clamped and embedded in the sealing groove. Has the advantages that: the utility model greatly facilitates the taking and placing operation of the workpiece, does not need workers to lean into the inner cavity of the heating furnace main body for operation, is convenient for the workers to connect the furnace cover and the heating furnace main body in a sealing way, and improves the working efficiency.

Description

Vacuum heating furnace

Technical Field

The utility model relates to the technical field of vacuum heating furnaces, in particular to a vacuum heating furnace.

Background

The vacuum heating furnace is a device capable of heating a workpiece in a vacuum environment, is mainly used for ceramic firing, vacuum smelting, electric vacuum part degassing, annealing, metal part brazing, ceramic-metal sealing and the like, and has the advantages of no environmental pollution, high mechanical and electrical integration degree, low energy consumption, high workpiece firing quality and the like in practical use.

Traditional vacuum heating furnace is when putting and get the work piece of waiting to heat, need the workman to visit mostly and put into in the middle of the heating furnace main part inner chamber with the work piece, and need the manual work to carry out sealing connection with bell and heating furnace main part, not only the operation process is loaded down with trivial details, waste time and energy, but also there may be the danger that the workman is scalded by the waste heat in the heating furnace main part inner chamber, in addition, vacuum heating furnace is after accomplishing the firing of waiting to heat the work piece, often need wait that the furnace temperature falls to open the bell and take out the work piece after the safe temperature, traditional vacuum heating furnace carries out the furnace body cooling in heating main part outside or the oven mostly, cooling efficiency is lower, lead to this process comparatively slow, still more heat has been wasted, the work efficiency of a vacuum heating furnace is reduced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the vacuum heating furnace which has the advantages that the workpiece is convenient to take and place, workers do not need to lean into the inner cavity of the heating furnace main body, the safety is higher, the furnace cover and the heating furnace main body are convenient to be connected in a sealing mode, in addition, the cooling can be carried out from the inner cavity of the heating furnace main body, the cooling efficiency is improved, the heat loss is reduced, and the problems in the background technology are further solved.

(II) technical scheme

In order to realize the advantages of convenience for taking and placing the workpiece, no need of a worker to probe into the inner cavity of the heating furnace main body, higher safety, convenience for hermetically connecting the furnace cover with the heating furnace main body, capability of cooling from the inner cavity of the heating furnace main body, improvement on cooling efficiency and reduction of heat loss, the utility model adopts the following specific technical scheme: the utility model provides a vacuum heating furnace, includes heating furnace main part and bell, the mounting panel is installed to heating furnace main part side bilateral symmetry, and installs the screw rod axle on the mounting panel to servo motor output is connected to screw rod axle one end, bell top surface central authorities fixedly connected with link, and link bottom both ends symmetry install the transfer line to the elevator is installed to the opposite one side of transfer line side symmetry, install the nut in the elevator, and nut and screw rod axle intermeshing, second go-between is installed on heating furnace main part side top, and the seal groove has been seted up to second go-between top surface, first connecting ring is installed to bell side bottom, and installs vacuum seal spare in first connecting ring bottom surface to the vacuum seal spare inlay card is in the seal groove.

Further, a heat exchange plate is installed on the bottom surface of the inner side of the furnace cover, a hollow pipe is fixedly installed in the center of the heat exchange plate, four groups of cooling plates are evenly connected to the side surfaces of the hollow pipe, and a plurality of object placing plates are fixedly installed between the side surfaces of the cooling plates.

Furthermore, one side of the inner cavity of the furnace cover is communicated with a water inlet pipe, and the other side of the inner cavity of the furnace cover is communicated with a water outlet pipe.

Furthermore, a first partition plate is installed in the center of the inner cavity of the furnace cover, a second partition plate is installed in the inner cavity of the hollow pipe, and the second partition plate and the first partition plate are located on the same plane.

Furthermore, the top end of the side face of the inner cavity of the hollow pipe is communicated with the top end of the side face of the inner cavity of the cooling plate to form a water inlet hole, and the bottom end of the side face of the inner cavity of the hollow pipe is communicated with the bottom end of the side face of the inner cavity of the cooling plate to form a backflow hole.

Further, a vacuumizing mechanism is fixed on the side face of the heating furnace main body, a plurality of electric heaters are uniformly installed on the inner wall of the heating furnace main body, a temperature sensor is installed on the bottom surface of an inner cavity of the heating furnace main body, a vacuum gauge is installed on the bottom surface of the heating furnace main body, and an air inlet valve is installed on the bottom surface of the heating furnace main body.

Furthermore, a plurality of supporting legs are evenly installed on the bottom surface of the heating furnace main body.

Furthermore, the heating furnace main body and the furnace cover both comprise a hearth and a sealed furnace shell.

(III) advantageous effects

Compared with the prior art, the utility model provides a vacuum heating furnace, which has the following beneficial effects:

(1) the utility model is provided with a connecting frame and a placing plate, when in use, a worker synchronously starts a servo motor arranged on the bottom surface of an installation plate to drive a threaded rod shaft to rotate, the threaded rod shaft is meshed with a nut arranged in a lifting block, the lifting block rises along with the rotation of the threaded rod shaft, so that the lifting block drives a transmission rod and the connecting frame to rise synchronously, and a furnace cover rises synchronously along with the connecting frame because the center of the bottom surface of the connecting frame is fixedly connected with the center of the top surface of the furnace cover, in addition, a heat exchange plate is fixedly arranged on the inner side of the furnace cover, a hollow pipe is fixedly arranged in the center of the heat exchange plate, the side surface of the hollow pipe is uniformly connected with a cooling plate, in addition, a plurality of layers of placing plates are uniformly arranged between the cooling plates, at the moment, the placing plate falls off from the inner cavity of a main body of a heating furnace along with the rising of the furnace cover, the worker can place the workpiece on the placing plate to complete the feeding of the workpiece, the steps are operated reversely, the furnace cover is lowered and reset until the first connecting ring arranged at the edge of the bottom end of the furnace cover is tightly abutted against the second connecting ring arranged at the edge of the top end of the heating furnace main body, and the vacuum sealing piece arranged at the bottom surface of the first connecting ring is clamped in the sealing groove arranged at the top surface of the second connecting ring to complete the connection and the sealing of the furnace cover and the heating furnace main body, a worker starts the vacuumizing mechanism to vacuumize the inner cavity of the heating furnace main body to a near vacuum state, the vacuum gauge can display the vacuum state of the inner cavity of the heating furnace main body, when the reading of the vacuum gauge reaches a parameter value, the electric heater arranged on the inner wall of the hearth is started to heat the workpiece, the temperature sensor feeds back the temperature of the inner cavity of the heating furnace main body in real time, when the heating operation of the workpiece is completed, the inner cavity of the heating furnace main body is cooled, and when the temperature sensor monitors that the temperature is reduced to a safe range, the air inlet valve is opened, the air pressure of the inner cavity of the heating furnace main body is balanced, the furnace cover is opened according to the steps again, and the workpiece which is well heated and processed can be taken out, so that the workpiece taking and placing operation is greatly facilitated, a worker does not need to visit the inner cavity of the heating furnace main body to operate, the operation is simple, the safety is higher, the furnace cover and the heating furnace main body are also greatly facilitated for the worker to be connected in a sealing mode, and the working efficiency is improved.

(2) The utility model is provided with the cooling plate and the heat exchange plate, as mentioned above, after the heating processing of the workpiece is completed, the cooling water is injected into the inner cavity of the furnace cover through the water inlet pipe, the cooling water enters one side of the first clapboard in the furnace cover and enters one side of the second clapboard arranged in the hollow pipe, at the moment, the cooling water can exchange heat through the heat exchange plate arranged on the bottom surface of the furnace cover, the temperature of the inner cavity of the main body of the heating furnace is reduced, meanwhile, the cooling water entering the hollow pipe flows into the cooling plate through the water inlet hole, the heat exchange efficiency of the cooling water and the inner cavity of the main body of the heating furnace is improved through the cooling plate, the cooling water absorbing heat flows into the other side of the second clapboard through the backflow hole and enters the other side of the first clapboard, finally, the cooling water is led out through the water outlet pipe, the heat absorbed by the cooling water can be recycled, in addition, the outer sides of the main body of the heating furnace and the furnace cover are both provided with the sealed furnace shells, can reduce the loss of the heat in-process of radiating outward to reduce the waste of energy, and in this process, heat transfer board and cooling plate all are in the middle of the heating furnace main part inner chamber, can increase heat transfer cooling area, improve cooling efficiency, thereby further improve a vacuum heating furnace's work efficiency.

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 of a structure of a vacuum heating furnace according to an embodiment of the present invention;

FIG. 2 is a side cross-sectional view of a vacuum furnace according to an embodiment of the present invention;

FIG. 3 is an enlarged view at A of FIG. 2 according to an embodiment of the present invention;

FIG. 4 is a perspective view of a cooling plate and a placement plate of a vacuum heating furnace according to an embodiment of the present invention.

In the figure:

1. a connecting frame; 2. a water inlet pipe; 3. a furnace cover; 4. a first connecting ring; 5. a heating furnace main body; 6. a threaded rod shaft; 7. a lifting block; 8. a servo motor; 9. a vacuum gauge; 10. supporting legs; 11. an intake valve; 12. mounting a plate; 13. a nut; 14. a vacuum pumping mechanism; 15. a transmission rod; 16. a second connection ring; 17. a water outlet pipe; 18. a hollow tube; 19. a heat exchange plate; 20. a first separator; 21. a second separator; 22. a cooling plate; 23. a storage plate; 24. an electric heater; 25. a water inlet hole; 26. a return orifice; 27. a temperature sensor; 28. a sealing groove; 29. a vacuum seal; 30. a hearth; 31. and sealing the furnace shell.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the present invention, a vacuum heating furnace is provided.

Referring to the drawings and the detailed description, the utility model is further explained, as shown in fig. 1-4, a vacuum heating furnace according to an embodiment of the utility model comprises a heating furnace main body 5 and a furnace cover 3, wherein mounting plates 12 are symmetrically mounted on two sides of a side surface of the heating furnace main body 5, a screw rod shaft 6 is mounted on the mounting plates 12, one end of the screw rod shaft 6 is connected with an output end of a servo motor 8, a connecting frame 1 is fixedly connected to the center of the top surface of the furnace cover 3, transmission rods 15 are symmetrically mounted on two ends of the bottom surface of the connecting frame 1, lifting blocks 7 are symmetrically mounted on a side surface of the transmission rods 15, nuts 13 are mounted in the lifting blocks 7, the nuts 13 are engaged with the screw rod shaft 6, a second connecting ring 16 is mounted on the top end of the side surface of the heating furnace main body 5, a sealing groove 28 is formed on the top surface of the second connecting ring 16, a first connecting ring 4 is mounted at the bottom surface of the side surface of the furnace cover 3, and a vacuum sealing element 29 is mounted on the bottom surface of the first connecting ring 4, and vacuum seal 29 inlay card is in seal groove 28, vacuum seal 29 is current mature technology, and no longer gives details here, has played very big effect that has made things convenient for the workman to connect bell 3 and heating furnace main part 5 sealing, has improved work efficiency.

In one embodiment, the heat exchange plate 19 is installed on the bottom surface of the inner side of the furnace cover 3, the hollow tube 18 is fixedly installed in the center of the heat exchange plate 19, four groups of cooling plates 22 are evenly connected to the side surfaces of the hollow tube 18, and a plurality of object placing plates 23 are fixedly installed between the side surfaces of the four groups of cooling plates 22, so that the effect of facilitating workers to place or take workpieces on the object placing plates 23 is achieved, the workers do not need to lean into the inner cavity of the heating furnace main body 5 to operate, the operation is simple, and the safety is higher.

In one embodiment, one side of the inner cavity of the furnace cover 3 is communicated with a water inlet pipe 2, and the other side of the inner cavity of the furnace cover 3 is communicated with a water outlet pipe 17, so that the functions of leading in cooling water and recovering the cooling water are achieved.

In one embodiment, a first partition plate 20 is installed in the center of the inner cavity of the furnace cover 3, a second partition plate 21 is installed in the inner cavity of the hollow tube 18, and the second partition plate 21 and the first partition plate 20 are located on the same plane, which plays a role in guiding the flow of cooling water, so that the heat exchange and cooling effects of the cooling water are better.

In one embodiment, the top end of the side surface of the inner cavity of the hollow tube 18 is communicated with the top end of the side surface of the inner cavity of the cooling plate 22 to form a water inlet 25, the bottom end of the side surface of the inner cavity of the hollow tube 18 is communicated with the bottom end of the side surface of the inner cavity of the cooling plate 22 to form a backflow hole 26, so that the effect of leading cooling water into the inner cavity of the cooling plate 22 is achieved, the heat exchange cooling area can be increased, the cooling efficiency is improved, and the working efficiency of the vacuum heating furnace is further improved.

In one embodiment, the side surface of the heating furnace main body 5 is fixed with the vacuumizing mechanism 14, the inner wall of the heating furnace main body 5 is uniformly provided with a plurality of electric heaters 24, the bottom surface of the inner cavity of the heating furnace main body 5 is provided with the temperature sensor 27, the bottom surface of the heating furnace main body 5 is provided with the vacuum gauge 9, and the bottom surface of the heating furnace main body 5 is provided with the air inlet valve 11, wherein the vacuumizing mechanism 14, the electric heaters 24, the temperature sensor 27, the vacuum gauge 9 and the air inlet valve 11 are all the existing mature technologies, and are not repeated herein, so that the effect of vacuumizing and heating the inner cavity of the heating furnace main body 5 is achieved.

In one embodiment, a plurality of supporting legs 10 are uniformly arranged on the bottom surface of the heating furnace main body 5, and play a role of supporting and stabilizing equipment.

In one embodiment, the furnace body 5 and the furnace cover 3 each include a hearth 30 and a sealed furnace shell 31, which serve to reduce the loss of heat during the outward radiation process, thereby reducing the waste of energy.

The working principle is as follows: the utility model is provided with a connecting frame 1 and a placing plate 23, when in use, a worker synchronously starts a servo motor 8 arranged on the bottom surface of an installing plate 12 to drive a threaded rod shaft 6 to rotate, the threaded rod shaft 6 is meshed with a nut 13 arranged in an elevating block 7, the elevating block 7 ascends along with the rotation of the threaded rod shaft 6, so that the elevating block 7 drives a transmission rod 15 to synchronously ascend together with the connecting frame 1, the furnace cover 3 ascends along with the connecting frame 1 because the center of the bottom surface of the connecting frame 1 is fixedly connected with the center of the top surface of the furnace cover 3, in addition, a heat exchange plate 19 is fixedly arranged on the inner side of the furnace cover 3, a hollow pipe 18 is fixedly arranged in the center of the heat exchange plate 19, cooling plates 22 are uniformly connected on the side surfaces of the hollow pipe 18, in addition, multiple layers of placing plates 23 are uniformly arranged among the cooling plates 22, at the moment, the placing plate 23 is separated from the inner cavity of a heating furnace main body 5 along with the ascending of the furnace cover 3, the worker can place a workpiece on the placing plate 23 to complete the feeding of the workpiece, after the placement is finished, the operation is reversed according to the steps, the furnace cover 3 is lowered and reset until the first connecting ring 4 arranged at the edge of the bottom end of the furnace cover 3 is tightly abutted to the second connecting ring 16 arranged at the edge of the top end of the heating furnace main body 5, and the vacuum sealing piece 29 arranged at the bottom surface of the first connecting ring 4 is clamped in the sealing groove 28 arranged at the top surface of the second connecting ring 16, so that the connection and the sealing of the furnace cover 3 and the heating furnace main body 5 are finished, a worker starts the vacuumizing mechanism 14 to vacuumize the inner cavity of the heating furnace main body 5 to be in a near vacuum state, the vacuum gauge 9 can display the vacuum state of the inner cavity of the heating furnace main body 5, when the reading of the vacuum gauge 9 reaches the parameter value, the electric heater 24 arranged on the inner wall of the hearth 30 is started to heat the workpiece, the temperature sensor 27 feeds back the temperature of the inner cavity of the heating furnace main body 5 in real time, and when the heating operation of the workpiece is finished, the inner cavity of the heating furnace main body 5 is cooled, when the temperature sensor 27 detects that the temperature is reduced to a safe range, the air inlet valve 11 is opened, the air pressure in the inner cavity of the heating furnace main body 5 is balanced, the furnace cover 3 is opened again according to the steps, and the heated and processed workpiece is taken out, so that the taking and placing operation of the workpiece is greatly facilitated, a worker does not need to lean into the inner cavity of the heating furnace main body 5 for operation, the operation is simple, the safety is higher, the worker can conveniently and hermetically connect the furnace cover 3 and the heating furnace main body 5, and the working efficiency is improved, in addition, the cooling plate 22 and the heat exchange plate 19 are arranged, as mentioned above, after the heating processing of the workpiece is completed, cooling water is injected into the inner cavity of the furnace cover 3 through the water inlet pipe 2, enters the first partition plate 20 side in the furnace cover 3 and enters the second partition plate 21 side installed in the hollow pipe 18, and the cooling water can exchange heat through the heat exchange plate 19 installed on the bottom surface of the furnace cover 3, the temperature of the inner cavity of the heating furnace main body 5 is reduced, and simultaneously the cooling water entering the hollow pipe 18 flows into the cooling plate 22 through the water inlet hole 25, the heat exchange efficiency of the cooling water and the inner cavity of the heating furnace main body 5 is improved by the cooling plate 22, the cooling water absorbing heat flows into the other side of the second clapboard 21 through the return hole 26, and enters the other side of the first clapboard 20 and is finally led out through the water outlet pipe 17, the heat absorbed by the cooling water can be recycled, in addition, the outer sides of the hearth 30 of the heating furnace main body 5 and the furnace cover 3 are provided with the sealed furnace shells 31, so that the loss in the process of radiating heat outwards can be reduced, therefore, the waste of energy is reduced, and in the process, the heat exchange plate 19 and the cooling plate 22 are both positioned in the inner cavity of the heating furnace main body 5, so that the heat exchange cooling area can be increased, the cooling efficiency is improved, and the working efficiency of the vacuum heating furnace is further improved.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A vacuum heating furnace comprises a heating furnace main body (5) and a furnace cover (3), and is characterized in that mounting plates (12) are symmetrically mounted on two sides of the side surface of the heating furnace main body (5), screw rod shafts (6) are mounted on the mounting plates (12), one ends of the screw rod shafts (6) are connected with the output end of a servo motor (8), a connecting frame (1) is fixedly connected to the center of the top surface of the furnace cover (3), transmission rods (15) are symmetrically mounted at two ends of the bottom surface of the connecting frame (1), lifting blocks (7) are symmetrically mounted on the side surface of one side opposite to the transmission rods (15), nuts (13) are mounted in the lifting blocks (7), the nuts (13) are meshed with the screw rod shafts (6), second connecting rings (16) are mounted at the top ends of the side surface of the heating furnace main body (5), and sealing grooves (28) are formed in the top surfaces of the second connecting rings (16), the furnace cover is characterized in that a first connecting ring (4) is installed at the bottom end of the side face of the furnace cover (3), a vacuum sealing element (29) is installed on the bottom face of the first connecting ring (4), and the vacuum sealing element (29) is clamped and embedded in a sealing groove (28).

2. The vacuum heating furnace according to claim 1, wherein a heat exchange plate (19) is installed on the bottom surface of the inner side of the furnace cover (3), a hollow pipe (18) is fixedly installed in the center of the heat exchange plate (19), four groups of cooling plates (22) are uniformly connected to the sides of the hollow pipe (18), and a plurality of object placing plates (23) are fixedly installed between the sides of the four groups of cooling plates (22).

3. A vacuum heating furnace according to claim 1, characterized in that one side of the inner cavity of the furnace cover (3) is communicated with a water inlet pipe (2), and the other side of the inner cavity of the furnace cover (3) is communicated with a water outlet pipe (17).

4. A vacuum heating furnace according to claim 2, characterized in that a first partition (20) is arranged in the center of the inner cavity of the furnace cover (3), a second partition (21) is arranged in the inner cavity of the hollow tube (18), and the second partition (21) and the first partition (20) are on the same plane.

5. The vacuum heating furnace according to claim 2, wherein the top end of the side surface of the inner cavity of the hollow tube (18) is communicated with the top end of the side surface of the inner cavity of the cooling plate (22) through a water inlet hole (25), and the bottom end of the side surface of the inner cavity of the hollow tube (18) is communicated with the bottom end of the side surface of the inner cavity of the cooling plate (22) through a return hole (26).

6. The vacuum heating furnace according to claim 1, wherein a vacuumizing mechanism (14) is fixed on the side surface of the heating furnace main body (5), a plurality of electric heaters (24) are uniformly installed on the inner wall of the heating furnace main body (5), a temperature sensor (27) is installed on the bottom surface of the inner cavity of the heating furnace main body (5), a vacuum gauge (9) is installed on the bottom surface of the heating furnace main body (5), and an air inlet valve (11) is installed on the bottom surface of the heating furnace main body (5).

7. A vacuum heating furnace according to claim 1, wherein a plurality of support legs (10) are uniformly installed on the bottom surface of the heating furnace main body (5).

8. A vacuum heating furnace according to claim 1, characterized in that the furnace body (5) and the furnace cover (3) each comprise a hearth (30) and a sealed furnace shell (31).