CN116510418B - Dust collector and use its oil base drill chip thermal desorption device - Google Patents
Dust collector and use its oil base drill chip thermal desorption device Download PDFInfo
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- CN116510418B CN116510418B CN202310723196.6A CN202310723196A CN116510418B CN 116510418 B CN116510418 B CN 116510418B CN 202310723196 A CN202310723196 A CN 202310723196A CN 116510418 B CN116510418 B CN 116510418B
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- dust
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- horizontal pipe
- reducing horizontal
- reducing
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- 239000000428 dust Substances 0.000 title claims abstract description 94
- 238000003795 desorption Methods 0.000 title claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 230000003247 decreasing effect Effects 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 21
- 239000002199 base oil Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000007790 scraping Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/18—Cleaning-out devices
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
Abstract
The application belongs to the technical field of oilfield environment protection, and discloses a dust removal device and an oil-based drilling cuttings thermal desorption device using the same. The dust removing device comprises a reducing pipeline component, an impeller conveyer and a collecting tank, wherein the reducing pipeline component comprises a reducing horizontal pipe and a scraper component rotationally connected in the reducing horizontal pipe, the reducing horizontal pipe comprises a first air inlet connected with an external front channel, a first air outlet connected with an external rear channel and a first discharge outlet connected with the impeller conveyer, the scraper component is used for pushing dust falling in air flow flowing to the first air outlet through the first air inlet into the impeller conveyer through the first discharge outlet, and the collecting tank is used for collecting dust from the impeller conveyer. The reducing horizontal pipe is configured such that an inner diameter in a direction from the first air inlet toward the first air outlet is gradually increased and then gradually decreased, and the scraper assembly is not in contact with an inner wall of the reducing horizontal pipe. The dust removing device can prevent the airflow pipeline from being blocked.
Description
Technical Field
The application relates to the technical field of oilfield environment protection, in particular to a dust removing device and an oil-based drilling cuttings thermal desorption device using the dust removing device.
Background
The oil-based drilling fluid has excellent performance and is widely applied to drilling operation, but a large amount of oil-based drilling cuttings are generated in the use process of the oil-based drilling fluid, and the oil-based drilling fluid belongs to HW08 dangerous wastes specified in the national dangerous waste directory (2021 edition) and can seriously influence the drilling operation and the ecological environment.
In view of this, the prior art generally uses reinjection of oil-based drill cuttings, thermal desorption, solvent extraction, incineration, etc. to isolate or eliminate contamination to some extent. The thermal desorption method is the most widely applied method, and is a method for evaporating base oil of oil-based drilling cuttings in a thermal desorption reaction kettle under the condition of 300-500 ℃ by utilizing an indirect heating mode and then collecting oil steam by utilizing a condensing device.
However, in order to better evaporate the base oil in the oil-based drill cuttings fast, all possess the agitator in the thermal desorption reation kettle, the agitator can raise and distribute the dust in the oil-based drill cuttings to the base oil gas phase, and the base oil steam of high temperature carries dirt ability reinforce, and the steam line that leads to condensing equipment that finally leads to the thermal desorption reation kettle is very easily to take place to block up, and clear up the difficulty after blocking up, very big influence the stability of oil-based drill cuttings processing operation.
Disclosure of Invention
In order to solve the problem that an air flow pipeline at the rear end of the oil-based drilling cuttings is blocked due to the fact that a large amount of dust is generated in the operation engineering of the thermal desorption reaction kettle, the application provides a dust removing device and an oil-based drilling cuttings thermal desorption device using the dust removing device.
The dust removing device according to the present application includes: the variable diameter pipeline assembly comprises a variable diameter horizontal pipe and a scraper assembly, wherein the scraper assembly is rotationally connected in the variable diameter horizontal pipe, the variable diameter horizontal pipe comprises a first air inlet used for being communicated with an external front channel, a first air outlet used for being communicated with an external rear channel, a first discharging hole used for being communicated with the impeller conveyor, the scraper assembly is used for pushing dust falling in air flowing to the first air outlet from the first air inlet into the impeller conveyor through the first discharging hole, and the collection tank is used for collecting dust from the impeller conveyor, wherein the variable diameter horizontal pipe is configured to gradually increase and then gradually decrease in the direction from the first air inlet to the first air outlet, and the scraper assembly is not contacted with the inner wall of the variable diameter horizontal pipe.
Further, the scraper component comprises a first driving motor connected with the reducing horizontal pipe, a first rotating shaft connected with a driving shaft of the first driving motor, and a scraping blade connected with the first rotating shaft, wherein the axial direction of the first rotating shaft is perpendicular to the axial direction of the first air inlet and the axial direction of the first air outlet respectively, and the bottommost end of the scraping blade is close to the bottom wall of the reducing horizontal pipe.
Further, a hollowed-out structure is formed on the scraping blade.
Further, the inner wall of the reducing horizontal tube is formed into a smooth arc surface.
Further, the impeller conveyor comprises a housing and a conveying blade assembly, the conveying blade assembly comprises a second driving motor fixedly connected to the outside of the housing, a second rotating shaft connected with a driving shaft of the second driving motor and located in the housing, and a plurality of blade groups arranged at intervals along the circumferential direction of the second rotating shaft, the axial direction of the second rotating shaft is perpendicular to the axial direction of the first rotating shaft, and a conveying cavity for containing dust is formed between each adjacent blade group and the side wall of the housing.
Further, the blade group comprises a fixed blade connected with the second rotating shaft and a telescopic blade elastically connected with the fixed blade, and an installation gap is formed between the telescopic blade and the inner wall of the shell.
Further, a closed valve is arranged between the discharge port of the impeller conveyor and the feed port of the collecting tank.
Further, a second air inlet and a second air outlet are formed in the upper portion of the collecting tank, a second discharge hole is formed in the bottom of the collecting tank, and a discharge valve is connected to the second discharge hole.
Further, the collecting tank is internally preset with the highest dust level and the lowest dust level, and is further provided with a first sensor for detecting whether dust reaches the highest dust level to transmit high-level signals so as to enable the collecting tank to discharge materials, and a second sensor for detecting whether dust reaches the lowest dust level to transmit low-level signals so as to enable the discharge valve to be closed.
Further, the device comprises a thermal desorption reaction kettle, a condensing device and the dust removing device which is communicated between an air outlet of the thermal desorption reaction kettle and an air inlet of the condensing device.
Compared with the prior art, the dust removing device has the following advantages:
1) Through setting up reducing horizontal tube, can make the dust in the air current deposit gradually in the flow direction from first air inlet to first gas outlet, the dust removes to the minimum under the effect of self gravity, simultaneously under the normal running fit of scraper subassembly, can assist the dust to subside fast and be pushed into the impeller conveyer through first discharge gate to further be carried by the impeller conveyer and collect in the collection tank;
2) Through the integrated design mechanism of the scraper component, the impeller conveyor and the airtight valve, the high-efficiency conveying of dust deposited in the reducing horizontal pipe is realized, and the pipeline blockage is effectively avoided;
3) The impeller conveyor adopts a structure that the fixed blades are matched with the telescopic blades, and the impeller conveyor is matched with the material sealing function between the adjacent blade groups, so that the air tightness of the impeller conveyor at high temperature is ensured, and meanwhile, the abrasion of the blade groups is reduced.
Drawings
Fig. 1 is a schematic structural view of a dust removing device according to an embodiment of the present application;
fig. 2 is a schematic view of the impeller conveyor shown in fig. 1.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings for a better understanding of the objects, structures and functions of the present application.
Fig. 1 shows a structure of a dust removing device 100 according to an embodiment of the present application. The dust removing apparatus 100 may include: the reducing pipe assembly 1, the impeller conveyor 2 and the collection tank 3 which are sequentially and longitudinally communicated, the reducing pipe assembly 1 can comprise a reducing horizontal pipe 12 and a scraper assembly rotatably connected in the reducing horizontal pipe 12, the reducing horizontal pipe 12 can comprise a first air inlet 15 which is used for being communicated with an external front channel, a first air outlet 16 which is used for being communicated with an external rear channel and a first discharge outlet 17 which is used for being communicated with the impeller conveyor 2, the scraper assembly is used for pushing dust falling in an air flow flowing to the first air outlet 16 through the first air inlet 15 into the impeller conveyor 2 through the first discharge outlet 17, and the collection tank 3 is used for collecting dust from the impeller conveyor 2. Wherein the reducing horizontal tube 12 is configured such that the inner diameter in a direction from the first air inlet 15 toward the first air outlet 16 is gradually increased and then gradually decreased, and the scraper assembly is not in contact with the inner wall of the reducing horizontal tube.
When the dust removing device 100 of the embodiment of the application works, the air flow carrying dust from the external front channel enters the reducing horizontal tube 12 through the first air inlet 15, and the air flow enters the rear channel through the first air outlet 16 under the condition of micro negative pressure. As the inner diameter of the reducing horizontal pipe 12 is gradually increased, the flow speed of the dust-carrying airflow is firstly reduced, and dust begins to deposit downwards under the action of gravity; the inner diameter of the reducing horizontal tube 12 is then gradually reduced and the flow rate of the air stream is gradually increased so that the air stream (which now still contains a small amount of unsettled fine dust) can quickly flow out of the first air outlet 16, which avoids the deposition of unsettled fine dust at the first air outlet 16 and into the rear channel, thereby preventing clogging of the air stream duct.
The dust removing device 100 of the embodiment of the application can gradually deposit dust in the airflow in the flowing direction from the first air inlet 15 to the first air outlet 16 by arranging the reducing horizontal pipe 12, and the dust moves to the lowest point under the action of gravity, and simultaneously can assist the dust to quickly settle and be pushed into the impeller conveyor 2 through the first discharge hole 17 under the running fit of the scraper component, and further is conveyed into the collecting tank 3 by the impeller conveyor 2 for collecting. By arranging the scraper component not to contact with the inner wall of the reducing horizontal pipe 12, on one hand, the scraper component can disturb dust at the bottom in the reducing horizontal pipe 12 in a rotating manner so as to push the dust at the bottom in the reducing horizontal pipe 12 into the impeller conveyor 2 better, and on the other hand, friction between the scraper component and the inner wall of the reducing horizontal pipe 12 due to thermal expansion can be prevented, so that the operation safety can be ensured.
In a preferred embodiment as shown in fig. 1, the doctor assembly may include a first drive motor 11 coupled to a variable diameter horizontal tube 12, a first shaft 13 coupled to a drive shaft of the first drive motor 11, and a doctor blade 14 coupled to the first shaft 13. The axial direction of the first rotating shaft 13 is perpendicular to the axial directions of the first air inlet 15 and the first air outlet 16 respectively, and the bottommost end of the scraping blade 14 is close to the bottom wall of the reducing horizontal pipe 12. By this arrangement, the wiper blade 14 can disturb the dust in the diameter-variable horizontal pipe 12 near the bottom wall thereof in a horizontally rotating manner to push the dust at the bottom in the diameter-variable horizontal pipe 12 into the impeller conveyor 2, and simultaneously can prevent the wiper blade 14 from rubbing against the bottom of the diameter-variable horizontal pipe 12 due to thermal expansion, thereby ensuring the safety of operation.
Preferably, the gap may range from 0.5 to 1.5 cm. The wiper blade 14 may rotate at a speed of 6rpm to 120 rpm.
In the preferred embodiment shown in fig. 1, the shape of the bottommost end of the wiper blade 14 is preferably similar to the shape of the bottom wall within the reducing horizontal tube 12 so that the wiper blade 14 can more uniformly disturb the entire circumferential dust of the bottom wall within the reducing horizontal tube 12 during horizontal rotation so that the dust can slide down uniformly into the first discharge port 17 over the entire circumference of the bottom wall within the reducing horizontal tube 12.
Also preferably, as shown in fig. 1, the topmost end of the wiper blade 14 may be configured as a flat surface, and is preferably parallel to a line connecting the first air inlet 15 and the first air outlet 16. By this arrangement, the topmost end of the wiper blade can always be parallel to the flow direction of the air flow from the first air inlet 15 to the first air outlet 16 when the wiper blade rotates horizontally, so that the influence of the topmost end of the wiper blade 14 on the horizontal flow of the air flow can be avoided.
Further, as shown in fig. 1, the wiper 14 may have a hollowed-out structure 18 formed thereon. The hollowed-out structure 18 reduces the resistance to rotation of the wiper blade 14.
According to the application, in the preferred embodiment shown in fig. 1, the inner wall of the reducing horizontal tube 12 is formed as a smooth arc which contributes to the dust collection at the first outlet 17 from high to low.
According to the present application, in the embodiment shown in fig. 1 and 2, the impeller conveyor 2 may include a housing 26 and a conveying blade assembly, which may include a second driving motor 21 fixedly coupled to the outside of the housing 26, a second rotating shaft 22 coupled to a driving shaft of the second driving motor 21 and positioned in the housing 26, and a plurality of blade groups 23 spaced apart in a circumferential direction of the second rotating shaft 22, an axial direction of the second rotating shaft 22 being perpendicular to an axial direction of the first rotating shaft 13, and a conveying chamber for accommodating dust being formed between adjacent blade groups 23 and a sidewall of the housing 26. In this embodiment, the dust entering the first discharge port 17 enters the conveying chamber corresponding to the feed port 24 through the feed port 24 of the impeller conveyor 2, and as the second driving motor 21 drives the second rotating shaft 22 to rotate, the conveying chambers corresponding to the adjacent blade groups rotate, so that the dust sequentially enters the conveying chambers, and when the conveying chambers rotate to be opposite to the discharge port 25 of the impeller conveyor 2, the dust in the conveying chambers enters the collecting tank 3 through the discharge port 25 for collection.
It should be noted that the number of the blade groups 23 may be specifically selected according to actual needs. Preferably, in order to achieve a smoother conveying effect of the impeller conveyor 2, the number of the vane groups 23 may be set to six, and the included angles between adjacent vanes are set to 60 °.
In a preferred embodiment as shown in fig. 2, the vane group 23 may include a fixed vane 231 coupled to the second rotation shaft 22 and a telescopic vane 232 elastically coupled to the fixed vane 231, with an installation gap formed between the telescopic vane 232 and an inner wall of the housing 26. By adopting the structure that the fixed blades 231 are matched with the telescopic blades 232 and matched with the material sealing function between the adjacent blade groups 23, the air tightness of the impeller conveyor 2 at high temperature is ensured, and meanwhile, the abrasion of the blade groups 23 is reduced.
Preferably, as shown in fig. 2, the fixed blade 231 and the telescopic blade 232 may be elastically connected by a spring 233, and the spring 233 sets a certain pre-compression force.
According to the application, as shown in fig. 1, a sealing valve 4 can be arranged between the discharge opening 25 of the impeller conveyor 2 and the feed opening of the collection tank 3. The upper portion of collection jar 3 has seted up second air inlet 32 and second gas outlet 31, and second discharge gate 35 has been seted up to the bottom of collection jar 3, and second discharge gate 35 department is connected with discharge valve 5.
In the preferred embodiment shown in fig. 1, the collection tank 3 may be pre-provided with a highest dust level and a lowest dust level, and the collection tank 3 is further provided with a first sensor 33 for detecting whether the dust reaches the highest dust level to transmit a high level signal to cause the collection tank 3 to discharge, and a second sensor 34 for detecting whether the dust reaches the lowest dust level to transmit a low level signal to cause the discharge valve 5 to close.
Preferably, the first sensor 33 may be installed at a position corresponding to the highest dust level, and the second sensor 34 may be installed at a position corresponding to the lowest dust level.
Further, the first sensor 33 may be preferably installed at 2/3 of the height of the collection tank 3, and the second sensor 34 may be installed at the lowest part of the cylindrical body of the collection tank 3 as shown in fig. 1.
In connection with this embodiment, the dust removing device 100 according to the embodiment of the present application has the following working procedures: during dust collection, the wiper blade 14 is driven by the first driving motor 11 to rotate, and pushes dust deposited in the reducing horizontal pipe 12 to the impeller conveyor 2 at the lowest point. Each blade group 23 in the impeller conveyor 2 rotates at a certain speed under the drive of the second drive motor 21, and dust in the conveying chamber at the lowest point is conveyed downwards into the collection tank 3. When the dust in the collection tank 3 reaches the highest dust position, the first sensor 33 arranged on the collection tank 3 is triggered to send out a high-level signal to prompt the collection tank 3 to discharge, and when the first sensor 33 is triggered, the scraping blade 14 and the impeller conveyor 2 stop working, and the sealing valve 4 is closed. During discharging, a valve of the second air outlet 31 of the collecting tank 3 and a vacuum pump connected with the valve are opened, oil gas in the tank is discharged, and when the pressure in the collecting tank 3 is reduced to 0-1000 Pa, preferably to 1000Pa, the valve of the second air outlet 31 is closed; then, the valve of the second air inlet 32 of the collecting tank 3 is opened to introduce nitrogen so as to adjust the pressure in the collecting tank 3 to normal pressure; finally, the discharge valve 5 is opened to discharge the dust in the collection tank 3, and when the second sensor 34 mounted on the collection tank 3 is triggered, the discharge is completed, and the discharge valve 5 can be closed. Discharging air in the tank after discharging is completed, opening a valve of a second air outlet 31 of the collecting tank 3 and a vacuum pump connected with the valve, discharging air in the tank, introducing nitrogen to adjust the pressure of the collecting tank 3 to normal pressure, and closing a valve of a second air inlet 32 of the collecting tank 3; finally, when dust collection needs to be continued, the sealing valve 4, the scraping blade 14 and the impeller conveyor 2 can be restarted.
The application also provides a thermal desorption device for the oil-based drilling cuttings, which comprises a thermal desorption reaction kettle, a condensing device and the dust removal device 100, wherein the dust removal device 100 is communicated between an air outlet of the thermal desorption reaction kettle and an air inlet of the condensing device.
In the device, the front channel outside the dust removal device 100 is the air outlet channel of the thermal desorption reaction kettle, the rear channel outside is the air inlet channel of the condensing device, and the air flow flowing to the first air outlet 16 through the first air inlet 15 is the high-temperature oil gas carrying the oil-based drilling cuttings. In a thermal desorption reaction kettle, in order to better evaporate the base oil in the oil-based drilling cuttings quickly, a stirrer is arranged in the thermal desorption reaction kettle, dust in the oil-based drilling cuttings is lifted and distributed into a base oil gas phase by the stirrer, and high-temperature base oil vapor has strong dust carrying capacity, so that an air inlet channel of the thermal desorption reaction kettle, which leads to a condensing device, is extremely easy to be blocked, and is difficult to clear after being blocked, so that the stability of oil-based drilling cuttings treatment operation is greatly influenced.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.
In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (8)
1. A dust collector for oil-based drill cuttings thermal desorption device, characterized by comprising: a reducing pipe assembly, an impeller conveyor and a collecting tank which are sequentially and longitudinally communicated, wherein the reducing pipe assembly comprises a reducing horizontal pipe and a scraper assembly rotationally connected in the reducing horizontal pipe, the reducing horizontal pipe comprises a first air inlet which is used for being communicated with an external front channel, a first air outlet which is used for being communicated with an external rear channel, and a first discharging port which is used for being communicated with the impeller conveyor, the scraper assembly is used for pushing dust falling in an air flow flowing to the first air outlet through the first air inlet into the impeller conveyor through the first discharging port, the collecting tank is used for collecting dust from the impeller conveyor, wherein the reducing horizontal pipe is configured such that the inner diameter of the reducing horizontal pipe in the direction from the first air inlet to the first air outlet is gradually increased and then gradually decreased, the scraper assembly is not contacted with the inner wall of the reducing horizontal pipe,
the scraper assembly comprises a first driving motor connected with the reducing horizontal pipe, a first rotating shaft connected with a driving shaft of the first driving motor, and the axial direction of the first rotating shaft is perpendicular to the axial directions of the first air inlet and the first air outlet respectively; the impeller conveyor comprises a shell and a conveying blade assembly, wherein the conveying blade assembly comprises a second driving motor fixedly connected to the outside of the shell, a second rotating shaft connected with a driving shaft of the second driving motor and positioned in the shell, and a plurality of blade groups which are arranged at intervals along the circumferential direction of the second rotating shaft, the axial direction of the second rotating shaft is perpendicular to the axial direction of the first rotating shaft, and a conveying cavity for accommodating dust is formed between the adjacent blade groups and the side wall of the shell; the blade group include with the fixed blade that the second pivot links to each other and with fixed blade elastic connection's flexible blade, flexible blade with be formed with the installation clearance between the inner wall of shell, fixed blade with flexible blade is direct through spring elastic connection, and the spring is set for there is the precompaction, makes flexible blade can be perpendicular to in the direction of second pivot is flexible, and can for fixed blade twists.
2. The dust extraction device of claim 1, wherein the scraper assembly further comprises a scraper blade coupled to the first shaft, wherein a bottommost end of the scraper blade is proximate the bottom wall of the reducing horizontal tube.
3. The dust removing device according to claim 2, wherein the wiper blade is formed with a hollowed-out structure.
4. A dust removing device according to any one of claims 1 to 3, wherein an inner wall of the reducing horizontal pipe is formed as a smooth arc surface.
5. A dust collector according to any one of claims 1 to 3, wherein a sealing valve is further provided between the outlet of the impeller conveyor and the inlet of the collection tank.
6. A dust collector according to any one of claims 1 to 3, wherein a second air inlet and a second air outlet are provided in the upper part of the collection tank, a second discharge port is provided in the bottom of the collection tank, and a discharge valve is connected to the second discharge port.
7. The dust collector of claim 6 wherein the collection tank is provided with a highest dust level and a lowest dust level, and wherein the collection tank is further provided with a first sensor for detecting whether the dust reaches the highest dust level to transmit a high level signal to enable the collection tank to discharge the dust, and a second sensor for detecting whether the dust reaches the lowest dust level to transmit a low level signal to enable the discharge valve to close.
8. An oil-based drilling cuttings thermal desorption device, characterized by comprising a thermal desorption reaction kettle, a condensing device and a dust removal device according to any one of claims 1 to 7, wherein the dust removal device is communicated between an air outlet of the thermal desorption reaction kettle and an air inlet of the condensing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310723196.6A CN116510418B (en) | 2023-06-16 | 2023-06-16 | Dust collector and use its oil base drill chip thermal desorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310723196.6A CN116510418B (en) | 2023-06-16 | 2023-06-16 | Dust collector and use its oil base drill chip thermal desorption device |
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| Publication Number | Publication Date |
|---|---|
| CN116510418A CN116510418A (en) | 2023-08-01 |
| CN116510418B true CN116510418B (en) | 2023-09-22 |
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| CN202310723196.6A Active CN116510418B (en) | 2023-06-16 | 2023-06-16 | Dust collector and use its oil base drill chip thermal desorption device |
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