CN209857644U

CN209857644U - Non-oxidation device additionally arranged on box-type furnace

Info

Publication number: CN209857644U
Application number: CN201920106895.5U
Authority: CN
Inventors: 宋明国; 宋明清; 曲兆军
Original assignee: WAFANGDIAN GUANGDA BEARING MANUFACTURING Co Ltd
Current assignee: WAFANGDIAN GUANGDA BEARING MANUFACTURING Co Ltd
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2019-12-27
Anticipated expiration: 2029-01-23

Abstract

The utility model discloses a box-type furnace is additionally provided with a non-oxidation device, which comprises a vacuum pressure detection device, a connecting frame and a heat preservation shell, wherein the front surface of the heat preservation shell is hinged with a box cover through a hinge, the inner part of the heat preservation shell is provided with an inner container, the inner container is connected with the heat preservation shell through the connecting frame, the vacuum pressure detection device is inserted into the inner part of the inner container from the upper end surface of the heat preservation shell, the lower surface of the inner part of the inner container is provided with equidistant springs, the lower bottom surface of the inner part of the springs is provided with a stand column, the utility model is provided with a pressure sensor and a vacuum pressure detection sensor, the pressure sensor and the vacuum pressure detection sensor can control the opening and closing of a vacuum pump through the action of a programmable PLC, thereby avoiding the trouble of manually opening the vacuum pump and closing the vacuum pump, and the device, the metal is metallurgical in a vacuum state, so that the oxidation effect is avoided.

Description

Non-oxidation device additionally arranged on box-type furnace

Technical Field

The utility model relates to a box furnace technical field specifically is a box furnace installs no oxidation unit additional.

Background

The box-type resistance furnace is a common electric furnace, is divided into a vertical type, a horizontal type, a split type and an integrated type, has temperature sections of below 1200 ℃, 1400 ℃, 1600 ℃, 1700 ℃, 1800 ℃ and the like, respectively takes a resistance wire, a silicon-carbon rod and a silicon-molybdenum rod as heating elements, and is widely applied to production and experiments in the fields of ceramics, metallurgy, electronics, glass, chemical industry, machinery, refractory materials, new material development, special materials, building materials and the like;

when the furnace body is used for metal metallurgy, due to the fact that oxygen exists in the interior of a hearth, metal can be oxidized, the existing furnace body which pumps air out of the interior of the hearth by using a pump machine needs to be manually opened or closed, and the furnace body is troublesome, and the degree of vacuum in the interior of the hearth is difficult to control due to the fact that the pump machine is manually opened or closed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a box stove installs no oxidation unit additional, aims at setting up the box stove of oxygen-free that can be convenient open or close the pump machine.

The utility model discloses a realize like this:

a box-type furnace is additionally provided with a non-oxidation device, which comprises a vacuum pressure detection device, a connecting frame and a heat preservation shell, wherein the front surface of the heat preservation shell is hinged with a box cover through a hinge, an inner container is arranged in the heat preservation shell, the inner container is connected with the heat preservation shell through the connecting frame, the vacuum pressure detection device is inserted into the inner container from the upper end surface of the heat preservation shell, equidistant springs are arranged on the lower surface of the inner container, stand columns are arranged on the lower bottom surface of the inner portion of the springs, pressure sensors are arranged at the upper ends of the stand columns, a placing plate is fixed on the upper surfaces of the springs, a base is arranged on the lower end surface of the heat preservation shell, a vacuum pump is arranged in the base, an air suction end of the vacuum pump is connected with an air inlet pipe, one end, away from the vacuum pump, of the, the front surface of vacuum pump is given vent to anger the end and is connected with the outlet duct, and the front surface of base is passed to the front end of outlet duct, one side that the vacuum pump was kept away from to the inside of base is provided with programmable logic controller.

Furthermore, an interlayer is arranged between the inner container and the heat preservation shell, equidistant heating wires are arranged inside the interlayer, and the heating wires are electrically connected with an external power supply.

Further, vacuum pressure detection device includes mounting panel, protecting sheathing and vacuum pressure detection sensor, and vacuum pressure detection sensor's surface mounting has protecting sheathing, and vacuum pressure detection sensor's upper end is fixed with the mounting panel, and the mounting panel is fixed mutually with insulation housing's up end, and vacuum pressure detection sensor's lower extreme is located the inside of inner bag.

Furthermore, the output end of the vacuum pressure detection device is electrically connected with the input end of a programmable PLC, the output end of the programmable PLC is electrically connected with the input end of the vacuum pump, and the output end of the programmable PLC is connected with the switch circuit of the pressure sensor.

Furthermore, the output end of the pressure sensor is electrically connected with the input end of the programmable PLC, and the output end of the programmable PLC is electrically connected with the input end of the vacuum pump.

Furthermore, the two sides of the placing plate are rotatably provided with rollers through pin shafts, and one side of each roller, which is far away from the spring, is in contact with the inner wall of the inner container.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses set up pressure sensor and vacuum pressure detection sensor, pressure sensor and vacuum pressure detection sensor can control the opening and closing of vacuum pump through PLC's programmable logic controller's effect, and then avoided manual operation to open the vacuum pump and close the trouble of vacuum pump to this device can close the vacuum pump when reaching the vacuum value of settlement, the condition that the vacuum is unclear can not appear, and the metal is metallurgical under vacuum state, has avoided the oxidation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

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

fig. 2 is a schematic structural diagram of the vacuum pressure detection device of the present invention;

fig. 3 is a schematic view of the installation of the spring of the present invention;

fig. 4 is a schematic diagram of the position of the pressure sensor of the present invention;

fig. 5 is a schematic structural view of the vacuum pump of the present invention;

FIG. 6 is a schematic block diagram of the vacuum pump of the present invention being turned on;

fig. 7 is a schematic block diagram of the vacuum pump of the present invention being turned off.

In the figure: 1. a box cover; 2. heating wires; 3. a vacuum pressure detection device; 31. mounting a plate; 32. a protective housing; 33. a vacuum pressure detection sensor; 4. a connecting frame; 5. an interlayer; 6. an inner container; 7. a heat-insulating shell; 8. placing the plate; 81. a roller; 9. a spring; 10. a base; 11. a vacuum pump; 111. an air inlet pipe; 112. an air outlet pipe; 113. a fan housing; 12. a programmable PLC; 13. a pressure sensor; 14. and (4) a column.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a box-type furnace is additionally provided with an oxidation-free device, which comprises a vacuum pressure detection device 3, a connecting frame 4 and a heat preservation shell 7, wherein the front surface of the heat preservation shell 7 is hinged with a box cover 1 through a hinge, the heat preservation shell 7 plays the roles of heat preservation and protecting an inner container 6, the inner container 6 is arranged inside the heat preservation shell 7, the inner container 6 is used as a hearth, the inner container 6 is connected with the heat preservation shell 7 through the connecting frame 4, an interlayer 5 is arranged between the inner container 6 and the heat preservation shell 7, the interlayer 5 is used as an installation place of a heating wire 2, equidistant heating wires 2 are arranged inside the interlayer 5, the heating wires 2 are electrically connected with an external power supply, and the heating wires 2 can generate heat after being electrified so as to heat the;

referring to fig. 1 and 5, a base 10 is disposed on a lower end surface of the heat-insulating housing 7, the base 10 is configured to accommodate a vacuum pump 11 and a programmable PLC12, a vacuum pump 11 is disposed inside the base 10, the vacuum pump 11 is configured to pump the interior of the liner 6 into a vacuum state to prevent oxygen from being present inside the liner 6 and oxidize metallurgical metal, an air intake pipe 111 is connected to an air intake end of the vacuum pump 11, one end of the air intake pipe 111 far away from the vacuum pump 11 is inserted into the interior of the liner 6, an air hood 113 is installed at one end of the air intake pipe 111 inserted into the interior of the liner 6, an air outlet end of a front surface of the vacuum pump 11 is connected to an air outlet pipe 112, a front end of the air outlet pipe 112 penetrates through a front surface of the base 10, air inside the liner 6 can enter the interior of the vacuum pump 11 through the air hood 113 and the air, the programmable PLC12 can control the on-off of the vacuum pump 11;

referring to fig. 1, 2 and 7, the vacuum pressure detecting device 3 is inserted into the inner container 6 from the upper end surface of the thermal insulation casing 7, the vacuum pressure detecting device 3 includes a mounting plate 31, a protective casing 32 and a vacuum pressure detecting sensor 33, the protective casing 32 is mounted on the outer surface of the vacuum pressure detecting sensor 33, the protective casing 32 can protect the vacuum pressure detecting sensor 33 to prevent the vacuum pressure detecting sensor 33 from contacting the heating wire 2, the mounting plate 31 is fixed on the upper end of the vacuum pressure detecting sensor 33, the mounting plate 31 is used for mounting the vacuum pressure detecting sensor 33 on the upper end surface of the thermal insulation casing 7, the mounting plate 31 is fixed on the upper end surface of the thermal insulation casing 7, the lower end of the vacuum pressure detecting sensor 33 is located inside the inner container 6, the output end of the vacuum pressure detecting device 3 is electrically connected to the input end of the programmable PLC12, the output end of the programmable PLC12 is electrically, the output end of the programmable PLC12 is connected with a switch circuit of the pressure sensor 13, the programmable PLC12 needs to set a pressure value, the vacuum pressure detection sensor 33 detects the vacuum pressure in the liner 6 and transmits a signal to the programmable PLC12, when the pressure value reaches a set value, the programmable PLC12 controls the vacuum pump 11 to be closed, the programmable PLC12 cuts off the circuit of the pressure sensor 13, an opening key of the pressure sensor 13 is arranged on the heat preservation shell 7, and the closed pressure sensor 13 can be opened through the key each time the device is used;

referring to fig. 1, 3, 4 and 6, springs 9 are installed at equal intervals on the inner lower surface of the inner container 6, a placing plate 8 is fixed on the upper surface of the spring 9, rollers 81 are installed on both sides of the placing plate 8 through pin shafts, and one side of the roller 81 far away from the spring 9 contacts with the inner wall of the inner container 6, when the water to be metallurgically poured is placed on the placing plate 8, the spring 9 can be compressed, the roller 81 moves on the inner wall of the inner container 6 and moves downwards on the placing plate 8, the lower bottom surface of the inside of the spring 9 is provided with the upright post 14, the upper end of the upright post 14 is provided with the pressure sensor 13, the pressure sensor 13 can be pressed when the placing plate 8 moves downwards, the output end of the pressure sensor 13 is electrically connected with the input end of the programmable PLC12, and the output end of the programmable PLC12 is electrically connected with the input end of the vacuum pump 11, and the pressure sensor 13 is used for detecting a pressure signal. And transmits a pressure signal to the programmable PLC12, which programmable PLC12 controls the turning on of the vacuum pump 11.

The working principle is as follows: when the device is used, the box cover 1 is opened, metal needing metallurgy is placed on the upper surface of the placing plate 8, the placing plate 8 can compress the spring 9 after being pressurized, the roller 81 moves downwards on the inner wall of the inner container 6 at the moment, the placing plate 8 also moves downwards, when the placing plate 8 moves to contact the pressure sensor 13, the pressure sensor 13 detects a pressure signal and transmits the signal to the programmable PLC12, the programmable PLC12 controls the vacuum pump 11 to be started, air in the inner container 6 can enter the vacuum pump 11 together with the air cover 113 and the air inlet pipe 111 and is exhausted into the atmosphere through the air outlet pipe 112, when all the metal needing metallurgy is placed in the inner container 6, the box cover 1 is closed, the heating wire 2 is electrified, the heating wire 2 heats the metal in the inner container 6, meanwhile, the vacuum pump 11 pumps the inner container 6 to be in a vacuum state, the vacuum pressure detection sensor 33 detects the vacuum degree in the inner container 6, and transmit the signal to PLC12, when the vacuum degree reaches the set value of PLC12, PLC12 controls vacuum pump 11 to close, PLC12 controls the power-on circuit of the pressure sensor 13 to be cut off at the same time, even if the placing plate 8 contacts the pressure sensor 13, the pressure sensor 13 can not transmit the signal to PLC12, make the vacuum pump 11 can not be started again, after metallurgy, open the case lid 1;

when the next metallurgy is performed again, the circuit power-on button of the pressure sensor 13 needs to be opened to restore the pressure sensor 13 to the operating state.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a box stove installs no oxidation unit additional, includes vacuum pressure detection device (3), link (4) and lagging casing (7), its characterized in that: the front surface of the heat-insulating shell (7) is hinged with a box cover (1) through a hinge, a liner (6) is arranged in the heat-insulating shell (7), the liner (6) is connected with the heat-insulating shell (7) through a connecting frame (4), the vacuum pressure detection device (3) is inserted into the liner (6) from the upper end surface of the heat-insulating shell (7), equidistant springs (9) are installed on the lower surface of the interior of the liner (6), a stand column (14) is installed on the lower bottom surface of the interior of the spring (9), a pressure sensor (13) is installed at the upper end of the stand column (14), a placing plate (8) is fixed on the upper surface of the spring (9), a base (10) is arranged on the lower end surface of the heat-insulating shell (7), a vacuum pump (11) is arranged in the base (10), and an air suction end of the vacuum pump (11) is connected with an air, the one end that vacuum pump (11) was kept away from in intake pipe (111) inserts the inside of inner bag (6), and intake pipe (111) insert the inside one end of inner bag (6) and install fan housing (113), the front surface of vacuum pump (11) is given vent to anger the end and is connected with outlet duct (112), and the front end of outlet duct (112) passes the front surface of base (10), one side that vacuum pump (11) were kept away from in the inside of base (10) is provided with Programmable Logic Controller (PLC) (12).

2. The box-type furnace additional non-oxidation device as claimed in claim 1, wherein an interlayer (5) is arranged between the inner container (6) and the heat preservation shell (7), heating wires (2) are arranged in the interlayer (5) at equal intervals, and the heating wires (2) are electrically connected with an external power supply.

3. The box-type furnace charging non-oxidation device according to claim 1, wherein the vacuum pressure detection device (3) comprises a mounting plate (31), a protective casing (32) and a vacuum pressure detection sensor (33), the protective casing (32) is mounted on the outer surface of the vacuum pressure detection sensor (33), the mounting plate (31) is fixed to the upper end face of the heat preservation casing (7), and the lower end of the vacuum pressure detection sensor (33) is located inside the inner container (6).

4. The box-type furnace charging non-oxidation device according to claim 1, wherein the output end of the vacuum pressure detection device (3) is electrically connected with the input end of a programmable PLC (12), the output end of the programmable PLC (12) is electrically connected with the input end of the vacuum pump (11), and the output end of the programmable PLC (12) is connected with the switch circuit of the pressure sensor (13).

5. The box furnace charging non-oxidation device according to claim 1, wherein the output of the pressure sensor (13) is electrically connected to the input of the programmable PLC (12), and the output of the programmable PLC (12) is electrically connected to the input of the vacuum pump (11).

6. The box-type furnace charging non-oxidation device as claimed in claim 1, wherein the two sides of the placing plate (8) are rotatably provided with rollers (81) through pin shafts, and one side of the roller (81) far away from the spring (9) is contacted with the inner wall of the inner container (6).