CN215572238U - Negative pressure monitoring device for furnace chamber of graphitizing furnace - Google Patents
Negative pressure monitoring device for furnace chamber of graphitizing furnace Download PDFInfo
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- CN215572238U CN215572238U CN202120843146.8U CN202120843146U CN215572238U CN 215572238 U CN215572238 U CN 215572238U CN 202120843146 U CN202120843146 U CN 202120843146U CN 215572238 U CN215572238 U CN 215572238U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 25
- 238000005087 graphitization Methods 0.000 claims abstract description 56
- 238000000746 purification Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 25
- 150000003839 salts Chemical class 0.000 claims description 24
- 239000000428 dust Substances 0.000 claims description 19
- 238000009835 boiling Methods 0.000 claims description 18
- 238000011084 recovery Methods 0.000 claims description 18
- 238000009530 blood pressure measurement Methods 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 2
- 239000003546 flue gas Substances 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 239000003575 carbonaceous material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model discloses a negative pressure monitoring device for a furnace chamber of a graphitization furnace, which comprises a communicating pipe, a negative pressure measuring component, a negative pressure control component and a fan, wherein one end of the communicating pipe is hermetically inserted into the furnace chamber at the upper part of the graphitization furnace, the other end of the communicating pipe is hermetically connected with the input end of the negative pressure measuring component, the output end of the negative pressure measuring component is connected with the input end of the negative pressure control component, the output end of the negative pressure control component is connected with the fan, the inlet of the fan is communicated with the furnace chamber of the graphitization furnace through an exhaust pipe, and the outlet of the fan is communicated with a gas purification system. The monitoring device provided by the utility model directly monitors the pressure in the furnace cavity, has real and accurate monitoring data, and can also stably control the negative pressure in the furnace cavity of the graphitization furnace to a target level to ensure the normal production; the negative pressure monitoring device is safe and applicable, mature in technology, stable in quality, energy-saving and emission-reducing.
Description
Technical Field
The utility model belongs to the technical field of graphitization furnaces, and particularly relates to a negative pressure detection device for a furnace chamber of a graphitization furnace.
Background
The graphitizing furnace is a high-temperature treatment furnace for converting carbonaceous materials into artificial graphite materials, the working temperature can reach 2800 ℃, the production efficiency is high, and energy and electricity are saved. The furnace chamber of the graphitization furnace is connected with the boiling salt recovery area and then is communicated with the fan through the exhaust pipe, so that the gasified gas in the carbonaceous material can be exhausted at high temperature, and the negative pressure state is maintained in the furnace chamber of the graphitization furnace, thereby being beneficial to the graphitization process. The gas containing volatile gas and salt in the gas is gradually condensed and solidified in the discharging process to lead the exhaust pipe communicated with the graphitization furnace to be thinner and thinner, and even cause the exhaust pipe to be blocked, so that potential safety hazards appear, and therefore, the graphitization furnace needs to be monitored at negative pressure to guide the graphitization furnace to produce.
At present, negative pressure monitoring of the graphitization furnace mostly adopts the mode that a negative pressure detector is arranged on an exhaust pipe to monitor the negative pressure in the furnace, but the method can cause inaccurate monitoring results and is difficult to reasonably feed back to production.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a negative pressure monitoring device for a furnace chamber of a graphitization furnace, which is used for stably and accurately monitoring the negative pressure of the furnace chamber of the graphitization furnace and ensuring the production.
The technical scheme of the utility model is as follows:
the utility model provides a negative pressure monitoring device for a furnace chamber of a graphitization furnace, which comprises,
one end of the communicating pipe is hermetically inserted into a furnace cavity at the upper part of the graphitization furnace;
the input end of the negative pressure measuring component is hermetically connected with the other end of the communicating pipe;
the input end of the negative pressure control assembly is connected with the output end of the negative pressure measurement assembly;
the fan, the fan with the output of negative pressure control assembly is connected, the entry of fan pass through the exhaust pipe with boiling salt recovery area links to each other, boiling salt recovery area and graphitizing furnace chamber intercommunication, the export and the gas purification system intercommunication of fan.
Further, the negative pressure measuring assembly comprises a negative pressure transmitter, the input end of the negative pressure transmitter is connected with the other end of the communicating pipe in a sealing mode, and a negative pressure display is arranged on the negative pressure transmitter.
Further, the input end of the negative pressure transmitter is connected with the communicating pipe through threads.
Further, a mounting hole is formed in the furnace wall of the graphitization furnace, a sealing ring is arranged in the mounting hole, and the communicating pipe is inserted into the sealing ring and enters the furnace cavity in the upper portion of the graphitization furnace.
Further, a sealing gland coaxial with the mounting hole is arranged on the outer side of the furnace wall of the graphitization furnace, and the communicating pipe is sequentially inserted into the sealing gland and the sealing ring to enter the furnace cavity at the upper part of the graphitization furnace.
Further, the height of one end of the communication pipe is lower than that of the other end of the communication pipe.
Furthermore, an anticorrosive coating is coated on the inner wall of the communicating pipe.
Furthermore, the device also comprises a boiling salt recovery assembly, one end of the boiling salt recovery assembly is communicated with the furnace chamber of the graphitization furnace, and the other end of the boiling salt recovery assembly is communicated with the inlet of the fan through the exhaust pipe.
Furthermore, the boiling salt recovery assembly comprises a reburning chamber and a settling chamber, an inlet of the reburning chamber is communicated with the furnace chamber of the graphitizing furnace, an outlet of the reburning chamber is communicated with an inlet of the settling chamber, and an outlet of the settling chamber is communicated with an inlet of the fan through the exhaust pipe.
Furthermore, the boiling salt recovery assembly also comprises a dust remover, an inlet of the dust remover is communicated with an outlet of the settling chamber, and an outlet of the dust remover is communicated with an inlet of the fan through the exhaust pipe.
The beneficial effects of the utility model at least comprise:
the utility model provides a negative pressure detection device for a furnace chamber of a graphitization furnace, which comprises a communicating pipe, a negative pressure measurement component, a negative pressure control component and a fan, wherein the input end of the negative pressure measurement component is communicated with the furnace chamber of the graphitization furnace through the communicating pipe to measure the pressure in the furnace chamber of the graphitization furnace, the negative pressure measurement component transmits a measured pressure signal to the negative pressure control component, the negative pressure control component judges the pressure signal, if the monitored pressure is higher than a target value, the negative pressure control component sends an operation instruction for improving the induced air flow to the fan, and the fan executes an instruction for improving the induced air flow of the fan, so that the pressure in the furnace chamber is maintained at the target value; if the pressure signal is lower than the target value of the process requirement of the graphitization furnace, the negative pressure control assembly sends an operation instruction for reducing the induced air flow to the fan, and the fan executes the instruction for reducing the induced air flow so as to maintain the pressure in the furnace cavity at the target value. By adopting the device provided by the utility model, the problem of inaccurate monitoring result caused by negative pressure monitoring on the gas in the exhaust pipe is solved, the negative pressure in the furnace cavity of the graphitization furnace can be stably controlled at a target level, and the normal production is ensured; the negative pressure monitoring device is safe and applicable, mature in technology, stable in quality, energy-saving and emission-reducing.
Drawings
Fig. 1 is a schematic structural diagram of a negative pressure monitoring device for a furnace chamber of a graphitization furnace in the present embodiment;
fig. 2 is a schematic structural diagram of the monitoring assembly in fig. 1.
In fig. 1-2, 1-carbonaceous material, 2-monitoring component, 3-furnace chamber, 4-electrode, 5-boiling salt recovery component, 6-blower, 7-purification system, 21-sealing ring, 22-communicating pipe, 23-sealing cover, 24-negative pressure transmitter, 25-negative pressure display and 26-negative pressure control component.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
Fig. 1 is a schematic structural diagram of a negative pressure monitoring device for a furnace chamber of a graphitization furnace according to the present embodiment, and with reference to fig. 1, in the graphitization process, the electrode 4 generates heat through resistance by the carbon material and the negative electrode phase, the temperature in the furnace chamber 3 rises, volatile gas, salt gas and dust generated by the carbon material 1 at the high temperature of more than 2600 ℃ enter the exhaust pipe under the action of the fan and are gradually condensed and adhered to the pipe wall of the exhaust pipe, thereby reducing the effective ventilation section of the exhaust pipe, and the working induced air flow of the fan communicated with the furnace chamber 3 is unchanged, so that the gas speed in the exhaust pipe is increased, the arrangement of the negative pressure detector on the exhaust pipe can show that the negative pressure in the furnace chamber 3 is reduced, and the negative pressure in the furnace chamber 3 can not be changed under the condition, so that the detection result is inaccurate, and the production is difficult to guide.
Fig. 1 is a schematic structural diagram of a furnace chamber negative pressure monitoring device of a graphitization furnace according to this embodiment, fig. 2 is a schematic structural diagram of a monitoring assembly in fig. 1, and with reference to fig. 1 and fig. 2, the furnace chamber negative pressure monitoring device of this embodiment includes a communicating pipe 22, a negative pressure measuring assembly, a negative pressure control assembly 26, and a blower 6.
Wherein, the one end of communicating pipe 22 is inserted in the furnace chamber 3 on the graphitizing furnace in a sealing manner, the input end of the negative pressure measuring component is connected with the other end of communicating pipe 22 in a sealing manner, the output end of the negative pressure measuring component is connected with the input end of the negative pressure control component 26, the output end of the negative pressure control component 26 is connected with the fan 6, the inlet of the fan 6 is communicated with the furnace chamber 3 of the graphitizing furnace through the exhaust pipe, and the outlet of the fan 6 is communicated with the gas purification system 7. When the graphitization furnace works, volatile gas, salt gas and dust are generated in the furnace chamber 3, so that the air pressure in the furnace chamber 3 is raised, the inlet of the fan is communicated with the graphitization furnace chamber 3 through the exhaust pipe, so that the gas in the furnace chamber 3 is led out, so that the furnace chamber 3 generates negative pressure, one end of the communicating pipe 22 is inserted into the furnace chamber 3, the other end of the communicating pipe 22 is hermetically connected with the negative pressure measuring assembly, the negative pressure measuring assembly can measure the pressure in the furnace chamber 3 and transmit a pressure signal to the negative pressure control assembly 26, the negative pressure control assembly 26 analyzes the pressure signal, and if the monitored pressure is the same as a target value, no indication is given; if the monitored pressure is less than the target value, the negative pressure control assembly 26 will send an instruction to the fan 6 connected with the output end of the negative pressure control assembly to increase the negative pressure in the furnace chamber and reduce the induced air flow, and the fan 6 will increase and reduce the induced air flow, thereby increasing the pressure in the furnace chamber 3 to the target value; if the monitored pressure is greater than the target value, the negative pressure control assembly 26 will send a command to the fan 6 to decrease the pressure in the cavity 3 and increase the induced airflow, and the fan 6 will increase the induced airflow, thereby decreasing the pressure in the cavity 3 to the target value. Through the treatment, the negative pressure in the furnace cavity of the graphitization furnace can be stabilized at a target value, and the normal production is ensured.
The negative pressure control assembly 26 can adopt an industrial automation mechanism controlled by a computer remote control and a field PLC or a single chip microcomputer control mechanism mainly controlled by an embedded system to process pressure signals and send instructions, the negative pressure control assembly 26 can receive pressure data sent by the negative pressure monitoring assembly, analyze and compare the pressure data with a target value, and then send a control instruction to control an electromagnetic valve, an air valve and the like to execute specified actions, so that the draught fan 6 adjusts the draught air volume to stabilize the pressure of the furnace chamber at the target value. It is further noted that, in the present embodiment, the monitoring assembly 2 may include the above-mentioned negative pressure measuring assembly, the negative pressure control assembly 26 and the fan 6.
Specifically, referring to fig. 2, in this embodiment, the negative pressure measuring assembly may include a negative pressure transducer 24, wherein an input end of the negative pressure transducer 24 is hermetically connected to the other end of the communicating pipe 22 to measure the pressure inside the cavity 3; in order to obtain the pressure value in the furnace chamber 3, a negative pressure display 25 may be further provided on the negative pressure transducer. The negative pressure transducer is the most common pressure transducer in industrial practice and is widely applied to various industrial self-control environments, the working principle of the negative pressure transducer is that the pressure of a medium directly acts on a diaphragm of a sensor to enable the diaphragm to generate micro displacement in direct proportion to the pressure of the medium, so that the resistance of the sensor is changed, an electronic circuit is used for detecting the resistance change, the resistance change is converted and output to a standard signal corresponding to the pressure and transmitted to a negative pressure control assembly, and the resistance change monitored by the negative pressure transducer can be converted into the pressure change and displayed through a negative pressure display 25. Of course, any negative pressure measuring assembly capable of realizing negative pressure monitoring and negative pressure signal output may be selected, and is not limited in particular. The negative pressure display 25 is used for displaying the pressure value in the furnace cavity measured by the negative pressure transmitter 24.
More specifically, the outer wall of the other end of the communicating pipe 22 may be provided with a thread, and the negative pressure transmitter 24 and the communicating pipe 22 may be connected by the thread; in order to improve the connection strength between the communicating pipe and the negative pressure transmitter, a set screw can be arranged, one end of the set screw is perpendicular to the axial direction of the communicating pipe and is fixed on the thread of the communicating pipe 22, and the other end of the set screw is inserted into the negative pressure transmitter 24; in order to improve the sealing performance, a sealing ring may be further disposed at the other end of the communication pipe 22, and of course, other connection methods may be adopted for the communication pipe 22 and the negative pressure transmitter 24, and any connection method that satisfies the sealing connection may be used in the present invention.
Referring to fig. 1 and 2, in this embodiment, the furnace wall of the graphitization furnace may be provided with a mounting hole, a sealing ring 21 may be disposed in the mounting hole, and a communication pipe 22 is inserted into the sealing ring 21 and enters the furnace chamber 3 on the upper portion of the graphitization furnace, so as to ensure that the negative pressure transmitter 24 accurately measures the pressure in the furnace chamber 2, and further avoid the gas in the furnace chamber 2 from being exhausted to affect the environment.
Further, in this embodiment, in order to improve the sealing performance between the monitoring device and the furnace chamber 3, a sealing cover 23 may be provided on the outer side of the furnace wall of the graphitization furnace, which is coaxial with the mounting hole, and the communication pipe 22 may be inserted into the furnace chamber 2 in the upper portion of the graphitization furnace by inserting the sealing cover 23 and the sealing ring 21 in this order.
Preferably, in this embodiment, the height of one end of the communication pipe 22 is lower than that of the other end of the communication pipe 22, because the density of the gas is small, and the gas moves upward, so that the pressure in the cavity 3 can be accurately measured.
In this embodiment, since the gas in the furnace chamber at high temperature contains gasified volatile components and salts (sodium sulfate, sodium silicate, etc.), and also contains dust, and these mixtures cause oxidation corrosion to the inner wall of the communication pipe 22, an anticorrosive coating may be coated on the inner wall of the communication pipe 22 to improve the service life of the communication pipe 22.
Further, in this embodiment, the monitoring device may further include a boiling salt recovery assembly 5, one end of the boiling salt recovery assembly 5 is communicated with the furnace chamber 2 of the graphitization furnace, and the other end of the boiling salt recovery assembly 5 is communicated with the inlet of the fan 6 through an exhaust pipe.
Specifically, the boiling salt recovery assembly can comprise a reburning chamber, a settling chamber and a dust remover, wherein an inlet of the reburning chamber is communicated with the furnace chamber 2 of the graphitization furnace, an outlet of the reburning chamber is communicated with an inlet of the settling chamber, an outlet of the settling chamber is communicated with an inlet of the dust remover, and an outlet of the dust remover is communicated with an inlet of the fan 6 through an exhaust pipe. The carbon powder which is not completely combusted in the graphitization furnace enters the reburning chamber, so that the unburned carbon powder is completely combusted; in order to better enable the settling chambers to better recover recovered materials, two-stage settling is arranged, the number of the settling chambers with the number of layers of the settling chambers can be set according to the dust content in the gas, for example, 2 settling chambers can be designed, and certainly, other numbers of settling chambers can be designed, the gas and the smoke dust in the furnace chamber 3 move under the action of the fan 6, in the moving process, the temperature is gradually reduced, then the salts can gradually form solids, and the smoke dust and the formed salt solids are accumulated in the settling chambers under the action of gravity and can be recycled; the dust remover is a kind of existing technology, for example, the dust remover includes a bag dust remover and an electric dust remover, and the specific selection can be performed according to the actual need, and is not limited specifically here.
The negative pressure detection device for the furnace chamber of the graphitization furnace directly monitors the pressure in the furnace chamber, has real and accurate monitoring data, solves the problem of inaccurate negative pressure monitoring result in the furnace chamber caused by negative pressure monitoring on gas in the exhaust pipe, can also stably control the negative pressure in the furnace chamber of the graphitization furnace at a target level, and ensures normal production; the negative pressure monitoring device is safe and applicable, mature in technology, stable in quality, energy-saving and emission-reducing.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A negative pressure monitoring device for a furnace chamber of a graphitization furnace is characterized by comprising,
one end of the communicating pipe is hermetically inserted into a furnace cavity at the upper part of the graphitization furnace;
the input end of the negative pressure measuring component is hermetically connected with the other end of the communicating pipe;
the input end of the negative pressure control assembly is connected with the output end of the negative pressure measurement assembly;
the fan, the fan with the output of negative pressure control assembly is connected, the entry of fan pass through the exhaust pipe with graphitizing furnace chamber intercommunication, the export and the gas purification system intercommunication of fan.
2. The negative pressure monitoring device for the furnace chamber of the graphitization furnace as claimed in claim 1, wherein the negative pressure measuring assembly comprises a negative pressure transmitter, the input end of the negative pressure transmitter is connected with the other end of the communicating pipe in a sealing manner, and a negative pressure display is arranged on the negative pressure transmitter.
3. The negative pressure monitoring device for the furnace chamber of the graphitization furnace as claimed in claim 2, wherein the input end of the negative pressure transmitter is in threaded connection with the communicating pipe.
4. The negative pressure monitoring device for the furnace chamber of the graphitization furnace as claimed in claim 1, wherein a mounting hole is formed in the furnace wall of the graphitization furnace, a sealing ring is arranged in the mounting hole, and the communicating pipe is inserted into the sealing ring and enters the furnace chamber at the upper part of the graphitization furnace.
5. The negative pressure monitoring device for the furnace chamber of the graphitization furnace as claimed in claim 4, wherein a sealing gland coaxial with the installation hole is arranged on the outer side of the furnace wall of the graphitization furnace, and the communicating pipe is inserted into the furnace chamber at the upper part of the graphitization furnace in sequence through the sealing gland and the sealing ring.
6. The negative pressure monitoring device for the furnace chamber of the graphitization furnace as claimed in claim 4, wherein the height of one end of the communicating pipe is lower than that of the other end of the communicating pipe.
7. The negative pressure monitoring device for the furnace chamber of the graphitization furnace as claimed in claim 4, wherein an anticorrosive layer is coated on the inner wall of the communicating pipe.
8. The graphitizing furnace chamber negative pressure monitoring device of any one of claims 1 to 7, characterized in that the device further comprises a boiling salt recovery assembly, one end of the boiling salt recovery assembly is communicated with the graphitizing furnace chamber, and the other end of the boiling salt recovery assembly is communicated with the fan inlet through the exhaust pipe.
9. The graphitizing furnace chamber negative pressure monitoring device of claim 8, wherein the boiling salt recovery assembly comprises a reburning chamber and a settling chamber, an inlet of the reburning chamber is communicated with the graphitizing furnace chamber, an outlet of the reburning chamber is communicated with an inlet of the settling chamber, and a flue gas outlet of the settling chamber is communicated with an inlet of the fan through the exhaust pipe.
10. The negative pressure monitoring device for the furnace chamber of the graphitization furnace as claimed in claim 9, wherein the boiling salt recovery assembly further comprises a dust remover, an inlet of the dust remover is communicated with a flue gas outlet of the settling chamber, and an outlet of the dust remover is communicated with the inlet of the fan through the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120843146.8U CN215572238U (en) | 2021-04-21 | 2021-04-21 | Negative pressure monitoring device for furnace chamber of graphitizing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120843146.8U CN215572238U (en) | 2021-04-21 | 2021-04-21 | Negative pressure monitoring device for furnace chamber of graphitizing furnace |
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| Publication Number | Publication Date |
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| CN215572238U true CN215572238U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120843146.8U Active CN215572238U (en) | 2021-04-21 | 2021-04-21 | Negative pressure monitoring device for furnace chamber of graphitizing furnace |
Country Status (1)
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| CN (1) | CN215572238U (en) |
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2021
- 2021-04-21 CN CN202120843146.8U patent/CN215572238U/en active Active
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