CN220418104U

CN220418104U - Heat flow external circulation structure of pressure sintering furnace

Info

Publication number: CN220418104U
Application number: CN202321670656.5U
Authority: CN
Inventors: 陈伟; 孙浩斌
Original assignee: Zhuzhou Tianrui New Material Technology Co ltd
Current assignee: Zhuzhou Tianrui New Material Technology Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-01-30
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses a heat flow external circulation structure of a pressure sintering furnace, which relates to the technical field of sintering equipment and comprises a sintering furnace body, wherein one side of the sintering furnace body is communicated with a main circulation pipe, the outer side of the main circulation pipe is connected with an opening and closing valve I, an auxiliary circulation pipe is communicated between the first end and the tail end of the main circulation pipe, the outer sides of the front end and the rear end of the auxiliary circulation pipe are respectively connected with an opening and closing valve II and an opening and closing valve III, and cooling equipment is connected between the opening and closing valve II and the opening and closing valve III; a stepping motor is arranged on one side of the sintering furnace body, the output end of the stepping motor is connected with a driving rotary roller extending into the sintering furnace body, a fan blade is fixed on the outer side surface of the driving rotary roller, and a diversion cone is fixed on the inner wall of the sintering furnace body outside the main circulation pipe; through the application of the technical scheme, the heat flow circulation and control of the sintering furnace can be effectively improved, the quality of products and the stability of the sintering process are improved, and damage or potential safety hazards caused by overheating are prevented.

Description

Heat flow external circulation structure of pressure sintering furnace

Technical Field

The utility model relates to the technical field of sintering equipment, in particular to a heat flow external circulation structure of a pressure sintering furnace.

Background

The sintering furnace is equipment for sintering ore or powdery materials and is commonly used in the fields of metallurgy, chemical industry, material processing and the like. During sintering, circulation and control of heat flow are very important for uniformity of temperature distribution in the furnace and stability of product quality; in the working process of the sintering furnace, as the inside of the sintering furnace needs to keep a certain temperature range to ensure the normal operation of the sintering process, the internal heat flow is often provided with a heat flow external circulation structure, the heat transfer and the material exchange are enhanced, and the heat energy utilization efficiency and the production efficiency of the sintering furnace are improved.

The heat flow external circulation structure is mostly that one side of the sintering furnace body is communicated with a main circulation pipe for guiding and circulating heat flow in the furnace. The main circulation duct is usually located at the side or bottom of the furnace body and connects the circulation systems inside and outside the furnace chamber. An auxiliary circulating pipe is communicated between the head end and the tail end of the main circulating pipe. The auxiliary circulating pipe and the main circulating pipe form a circulating loop, so that heat flow can be circularly transferred between the inside and the outside of the furnace.

The existing main circulation pipe and the auxiliary circulation pipe are switched through a manual operation valve, the equipment cannot be automatically switched according to the internal temperature of an actual sintering furnace, manual operation is still needed after the equipment is overheated, the efficiency is low, the temperature adjustment duration is affected, and certain potential safety hazards exist after the equipment is used for a long time.

Disclosure of Invention

In order to solve the problems, the utility model provides a heat flow external circulation structure of a pressure sintering furnace, which comprises a sintering furnace body, wherein one side of the sintering furnace body is communicated with a main circulation pipe, the outer side of the main circulation pipe is connected with an opening and closing valve I, an auxiliary circulation pipe is communicated between the first end and the tail end of the main circulation pipe, the outer sides of the front end and the rear end of the auxiliary circulation pipe are respectively connected with an opening and closing valve II and an opening and closing valve III, and cooling equipment is connected between the opening and closing valve II and the opening and closing valve III; one side of the sintering furnace body is provided with a stepping motor, the output end of the stepping motor is connected with a driving rotary roller which extends into the sintering furnace body, the outer side surface of the driving rotary roller is fixed with a fan blade, and the inner wall of the sintering furnace body is fixed with a diversion cone outside the main circulation pipe.

Further, a driving gear is fixed on the outer side face of the driving rotary roller, square blocks are fixed on the side walls of the opening and closing rotary table of the opening and closing valve II and the opening and closing rotary table of the opening and closing valve III, the square blocks are fixed through a connecting frame, a driven gear I is slidably connected with the outer side face of the square block of the opening and closing valve II, a driven gear II is fixed on the side face of the opening and closing rotary table of the opening and closing valve I, and the driven gear I can be meshed with the driving gear and the driven gear II simultaneously.

Further, a linear driver is fixed on the cooling device, a connecting sleeve is fixed at the telescopic end of the linear driver, the connecting sleeve is rotationally connected with the driven gear, a ring groove is formed in the side wall of the driven gear I, and one end of the connecting sleeve is positioned in the ring groove.

Further, a temperature sensor is arranged in the sintering furnace body and is electrically connected with the linear driver and the stepping motor.

Further, the outside of the main circulation pipe is connected with a filter box, and a filter membrane and an active carbon box are arranged on the inner wall of the filter box.

Further, the outside of the main circulating pipe is communicated with a nitrogen through pipe, one end of the nitrogen through pipe is connected with a nitrogen generator, and the outer side surface of the nitrogen through pipe is connected with a start-stop valve IV.

The utility model has the following beneficial effects:

1. when the temperature monitor detects that the temperature in the sintering furnace body is too high, the system can automatically start the stepping motor and the linear driver. The stepping motor drives the driving roller and the exhaust fan blade to stop rotating, and the circulation of heat flow is blocked. The linear driver drives the driven gear I to be meshed with the driving gear II and the driven gear II, the states of the opening and closing valve II and the opening and closing valve III are switched, and heat flow is guided to the auxiliary circulating pipe and is subjected to cooling treatment through the cooling equipment. By the mode, the temperature of the sintering furnace can be effectively and automatically controlled, manual operation is not needed, and damage or potential safety hazards caused by overheating are prevented.

2. Through the outer circulation of heat flow, the heat flow is led to the main circulation pipe from the sintering furnace body through the guide cone, carries out impurity filtration through rose box, filter membrane and active carbon box, then flows back to the sintering furnace body, has realized the cyclic utilization of heat flow. Therefore, the heat energy utilization efficiency can be improved, and the energy consumption can be reduced.

3. The temperature sensor is arranged in the sintering furnace body, and feedback control is performed according to the monitored temperature signal, so that the monitoring and the adjustment of the internal temperature of the sintering furnace are realized. When the temperature is too high, the system can take corresponding measures to reduce the temperature in the furnace and protect the furnace body and materials.

Drawings

FIG. 1 is a schematic view of the internal structure of the present utility model;

fig. 2 is a schematic diagram of the gear engaged state in the present utility model.

The reference numerals are explained as follows: 1. a sintering furnace body; 2. a main circulation pipe; 3. opening and closing a valve I; 4. a secondary circulation pipe; 5. opening and closing a valve II; 6. opening and closing a valve III; 7. a cooling device; 8. a stepping motor; 9. driving a rotating roller; 10. a fan blade; 11. a diversion cone; 12. a drive gear; 13. square blocks; 14. a connecting frame; 15. a driven gear I; 16. a driven gear II; 17. a linear driver; 18. a connecting sleeve; 19. a temperature sensor; 20. a nitrogen gas through pipe; 21. opening and closing a valve IV; 22. a filter box; 23. a filter membrane; 24. an active carbon box.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model is further described below with reference to the accompanying drawings:

the utility model provides a pressure sintering furnace heat flow external circulation structure, as shown in figure 1, includes sintering furnace body 1, and one side of sintering furnace body 1 communicates has main circulating pipe 2, and main circulating pipe 2's outside is connected with and opens and close valve one 3, and main circulating pipe 2 connects between the end to end and has vice circulating pipe 4, and the front and back both ends outside of vice circulating pipe 4 is connected with respectively and opens and closes valve two 5 and opens and close valve three 6, opens and closes between valve two 5 and the valve three 6 and is connected with cooling device 7; the outside of the main circulation pipe 2 is connected with a filter box 22, and a filter membrane 23 and an active carbon box 24 are arranged on the inner wall of the filter box 22; the outside of the main circulation pipe 2 is communicated with a nitrogen pipe 20, one end of the nitrogen pipe 20 is connected with a nitrogen generator, and the outer side surface of the nitrogen pipe 20 is connected with a start-stop valve IV 21.

In this embodiment, as shown in fig. 1, a stepping motor 8 is disposed at one side of a sintering furnace body 1, an output end of the stepping motor 8 is connected with a driving roller 9 extending into the sintering furnace body 1, an exhaust fan blade 10 is fixed on an outer side surface of the driving roller 9, and a diversion cone 11 is fixed on an inner wall of the sintering furnace body 1 outside a main circulation pipe 2.

In this embodiment, as shown in fig. 1 and 2, a driving gear 12 is fixed on the outer side surface of the driving roller 9, square blocks 13 are fixed on the side walls of the opening and closing turntables of the opening and closing valve two 5 and the opening and closing valve three 6, the two square blocks 13 are fixed through a connecting frame 14, a driven gear one 15 is slidably connected on the outer side surface of the square block 13 of the opening and closing valve two 5, a driven gear two 16 is fixed on the side surface of the opening and closing turntable of the opening and closing valve one 3, and the driven gear one 15 can be meshed with the driving gear 12 and the driven gear two 16 at the same time; a linear driver 17 is fixed on the cooling equipment 7, a connecting sleeve 18 is fixed at the telescopic end of the linear driver 17, the connecting sleeve 18 is rotationally connected with a driven gear I15, a ring groove is formed in the side wall of the driven gear I15, and one end of the connecting sleeve 18 is positioned in the ring groove; the sintering furnace body 1 is internally provided with a temperature sensor 19, and the temperature sensor 19 is electrically connected with the linear driver 17 and the stepping motor 8.

The working principle of the utility model is as follows:

during normal operation, the first opening and closing valve 3 is in a communication state, the second opening and closing valve 5 and the third opening and closing valve 6 are in a cut-off state, the driven gear 15 is not meshed with the driving gear 12 and the driven gear 16, the stepping motor 8 drives the driving rotary roller 9 to rotate at the moment, and then drives the fan blade 10 to rotate, heat flow in the sintering furnace body 1 is guided into the main circulation pipe 2 through the guide cone 11, the heat flow passes through the filter box 22, and after impurities in the heat flow are filtered by the filter membrane 23 and the activated carbon box 24, the heat flow returns into the sintering furnace body 1 through the tail end of the main circulation pipe 2.

When the temperature monitor detects that the temperature inside the sintering furnace body 1 is too high, the stepping motor 8 stops running, the linear driver 17 starts to drive the driven gear 15 to move towards the direction of the driving gear 12 and the driven gear 16 until the driven gear 15 is meshed with the driving gear 12 and the driven gear 16, the stepping motor 8 starts to drive the driving rotary roller 9 and the driving gear 12 to rotate a certain angle, then drives the driven gear 15 to rotate, the opening and closing rotary table of the opening and closing valve 2 rotates to enable the opening and closing valve 5 to be switched to a communicating state, the opening and closing rotary table of the opening and closing valve 6 is synchronously driven to rotate through the cooperation of the two square blocks 13 and the connecting frame 14, the driven gear 15 drives the opening and closing rotary table of the opening and closing valve 3 to rotate through the driven gear 16 at the same time, the linear driver 17 is retracted again to drive the driven gear 15 to be disengaged, and after the stepping motor 8 is started again, heat flows through the auxiliary circulating pipe 4 after a section of the main circulating pipe 2, and is cooled through the cooling equipment 7, and then flows back into the sintering furnace body 1, so that the temperature inside the sintering furnace body 1 is reduced.

In the sintering process, the opening and closing valve IV 21 can be opened according to actual conditions, nitrogen is filled to protect the material of the sintering furnace body 1 from oxidation damage, atmosphere conditions are regulated, the sintering efficiency is improved, and pollution risks are reduced.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. The utility model provides a pressure sintering furnace heat flow extrinsic cycle structure, includes sintering furnace body (1), its characterized in that: one side of the sintering furnace body (1) is communicated with a main circulating pipe (2), the outer side of the main circulating pipe (2) is connected with an opening and closing valve I (3), an auxiliary circulating pipe (4) is communicated between the front end and the rear end of the main circulating pipe (2), the outer sides of the front end and the rear end of the auxiliary circulating pipe (4) are respectively connected with an opening and closing valve II (5) and an opening and closing valve III (6), and cooling equipment (7) is connected between the opening and closing valve II (5) and the opening and closing valve III (6); one side of the sintering furnace body (1) is provided with a stepping motor (8), the output end of the stepping motor (8) is connected with a driving rotary roller (9) extending to the inside of the sintering furnace body (1), the outer side surface of the driving rotary roller (9) is fixed with a fan blade (10), and the inner wall of the sintering furnace body (1) is fixed with a diversion cone (11) at the outer side of the main circulation pipe (2).

2. The pressure sintering furnace heat flow external circulation structure according to claim 1, wherein: the driving rotary roller is characterized in that a driving gear (12) is fixed on the outer side face of the driving rotary roller (9), square blocks (13) are fixed on the side walls of the opening and closing rotary table of the opening and closing valve II (5) and the opening and closing valve III (6), the two square blocks (13) are fixed through a connecting frame (14), a driven gear I (15) is slidably connected with the outer side face of the square block (13) of the opening and closing valve II (5), a driven gear II (16) is fixed on the side face of the opening and closing rotary table of the opening and closing valve I (3), and the driven gear I (15) can be meshed with the driving gear (12) and the driven gear II (16) simultaneously.

3. The pressure sintering furnace heat flow external circulation structure according to claim 2, wherein: a linear driver (17) is fixed on the cooling equipment (7), a connecting sleeve (18) is fixed at the telescopic end of the linear driver (17), the connecting sleeve (18) is rotationally connected with a driven gear I (15), a ring groove is formed in the side wall of the driven gear I (15), and one end of the connecting sleeve (18) is located in the ring groove.

4. A pressure sintering furnace heat flow external circulation structure according to claim 3, wherein: the sintering furnace is characterized in that a temperature sensor (19) is arranged in the sintering furnace body (1), and the temperature sensor (19) is electrically connected with the linear driver (17) and the stepping motor (8).

5. The pressure sintering furnace heat flow external circulation structure according to claim 1, wherein: the outside of the main circulation pipe (2) is connected with a filter box (22), and a filter membrane (23) and an active carbon box (24) are arranged on the inner wall of the filter box (22).

6. The pressure sintering furnace heat flow external circulation structure according to claim 1, wherein: the nitrogen generator is characterized in that the outer side of the main circulating pipe (2) is communicated with a nitrogen through pipe (20), one end of the nitrogen through pipe (20) is connected with a nitrogen generator, and the outer side of the nitrogen through pipe (20) is connected with a fourth opening and closing valve (21).