CN113618560B - Core block dry grinding device and system - Google Patents

Core block dry grinding device and system Download PDF

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Publication number
CN113618560B
CN113618560B CN202110859086.3A CN202110859086A CN113618560B CN 113618560 B CN113618560 B CN 113618560B CN 202110859086 A CN202110859086 A CN 202110859086A CN 113618560 B CN113618560 B CN 113618560B
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China
Prior art keywords
grinding
sealing cover
guide wheel
wheel
dust
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CN202110859086.3A
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Chinese (zh)
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CN113618560A (en
Inventor
翟家海
毛建中
魏定池
吴耀
聂兰强
周慧
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Hunan University
China Nuclear Power Engineering Co Ltd
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Hunan University
China Nuclear Power Engineering Co Ltd
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Application filed by Hunan University, China Nuclear Power Engineering Co Ltd filed Critical Hunan University
Priority to CN202110859086.3A priority Critical patent/CN113618560B/en
Publication of CN113618560A publication Critical patent/CN113618560A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Abstract

The invention provides a core block dry grinding device, comprising: the second sealing cover, the grinding wheel mechanism, the guide wheel mechanism, the feeding mechanism and the first pressing mechanism; the grinding wheel mechanism comprises a grinding wheel, the guide wheel mechanism comprises a guide wheel, the grinding wheel and the guide wheel are both positioned in the second sealing cover, the central axes of the grinding wheel and the guide wheel are parallel, and a dry grinding station for the core block is formed between the grinding wheel and the guide wheel; the feeding mechanism penetrates through the second sealing cover and is used for conveying the core blocks, and the dry grinding station is positioned on a conveying path of the core blocks; the first pressing mechanism is connected with the guide wheel mechanism and used for driving the guide wheel mechanism to be close to or far away from the grinding wheel mechanism so as to press the core blocks on the dry grinding station between the grinding wheel and the guide wheel or release the core blocks. Accordingly, a core dry milling system is provided. According to the invention, most of dust generated in the grinding process is collected in the second sealing cover, so that the damage of grinding parts caused by the fact that the dust is adhered to the surfaces of grinding wearing parts is avoided, and the loss of the dust in the collecting process is greatly reduced.

Description

Core block dry grinding device and system
Technical Field
The invention relates to the technical field of nuclear fuel production, in particular to a core block dry grinding device and system.
Background
In the process of processing the ceramic core block, the process is generally divided into wet grinding and dry grinding, wherein the wet grinding is to fully add cooling liquid to reduce the grinding temperature in the grinding process,
the grinding slag is taken away, the grinding condition is improved, and the dust diffusion generated during grinding of the workpiece is avoided. Then, in the wet grinding process, not only is grinding fluid added to the grinding area, but also the ground pellet finished product needs to be dried, so that the process is complicated and long-time consuming. The dry grinding is to grind the ceramic pellet directly, but dust generated by grinding the ceramic pellet can be generated in the dry grinding process, so that dust generated by grinding the ceramic pellet overflows, material waste can be caused, the ceramic pellet belongs to nuclear fuel, and the generated dust has radioactivity, can pollute the environment and can influence the health of human bodies.
The chinese patent application CN111251091A discloses a core block dry grinding and grinding slag collecting device, which places the whole grinding device in a local enclosure, and because the grinding slag generated by grinding can form raised dust adhered to the surface of the grinding wearing part in the running process of the grinding device, not only the grinding wearing part, especially the driving motor, is easily damaged, but also the dust adhered to the grinding part is not easy to collect.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pellet dry grinding device and a pellet dry grinding system which can improve the collection rate of grinding slag and prolong the service life of a grinding wearing part aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problem of the invention is as follows:
the invention provides a core block dry grinding device, comprising: the second sealing cover, the grinding wheel mechanism, the guide wheel mechanism, the feeding mechanism and the first pressing mechanism;
the grinding wheel mechanism comprises a grinding wheel, the guide wheel mechanism comprises a guide wheel, the grinding wheel and the guide wheel are both positioned in the second sealing cover, the central axes of the grinding wheel and the guide wheel are parallel, and a dry grinding station for the pellets is formed between the grinding wheel and the guide wheel;
the feeding mechanism penetrates through the second sealing cover and is used for conveying the pellets, and the dry grinding station is positioned on a conveying path of the pellets;
the first pressing mechanism is connected with the guide wheel mechanism and used for driving the guide wheel mechanism to be close to or far away from the grinding wheel mechanism so as to press the pellets on the dry grinding station between the grinding wheel and the guide wheel or loosen the pellets.
Optionally, the inner cavity of the second seal cover includes a first cavity and a second cavity, the grinding wheel and the guide wheel are located at the upper portion of the first cavity, one end of the lower portion of the first cavity, which is far away from the first pressing mechanism, extends outward to form the second cavity, and one end of the bottom wall of the first cavity, which is far away from the second cavity, is inclined upward relative to one end of the bottom wall of the first cavity, which is close to the second cavity.
Optionally, the feeding mechanism comprises a feeding linear vibrator, a guide plate and a discharging linear vibrator, the feeding linear vibrator, the guide plate and the discharging linear vibrator are sequentially connected, the feeding linear vibrator and the discharging linear vibrator are respectively arranged on two sides of the dry grinding station along the axial direction of the grinding wheel, and the guide plate is located below the dry grinding station.
Optionally, the grinding wheel grinding machine further comprises a second pressing mechanism, and the second pressing mechanism is connected with the feeding mechanism and used for driving the feeding mechanism to be close to the grinding wheel.
Optionally, the first pressing mechanism includes a first carriage, a first pressing motor and a first lead screw, the first pressing motor is in transmission connection with the first lead screw, the first carriage is in threaded connection with the first lead screw, and the guide wheel mechanism is arranged on the first carriage;
the second pressing mechanism comprises a second sliding frame, a second pressing motor and a second lead screw, the second pressing motor is in transmission connection with the second lead screw, the second sliding frame is in threaded connection with the second lead screw, and the feeding mechanism is arranged on the second sliding frame;
the first sliding frame and the second sliding frame are connected in a sliding mode.
Optionally, the grinding wheel mechanism further comprises a first driving motor, and the first driving motor is in transmission connection with the grinding wheel and is used for driving the grinding wheel to rotate;
the guide wheel mechanism also comprises a second driving motor, and the second driving motor is in transmission connection with the guide wheel and is used for driving the guide wheel to rotate;
the first driving motor and/or the second driving motor are/is an angle motor.
The invention also provides a core block dry grinding system, which comprises a dust collecting device, a gas circulating device and a grinding machine, wherein the grinding machine comprises the core block dry grinding device,
an air inlet of the dust collecting device is communicated with an air outlet of the second sealing cover and is used for collecting the grinding slag generated by the dry grinding of the core blocks;
the air inlet of the gas circulating device is communicated with the air outlet of the dust collecting device, and the air outlet of the gas circulating device is communicated with the air inlet of the second sealing cover; the gas circulating device is used for driving gas to circularly flow among the second seal cover, the dust collecting device and the gas circulating device.
Optionally, the inner cavity of the second seal cover comprises a first cavity and a second cavity, the grinding wheel and the guide wheel of the pellet dry grinding device are located at the upper part of the first cavity, one end of the lower part of the first cavity, which is far away from the first pressing mechanism, extends outwards to form the second cavity, and one end of the bottom wall of the first cavity, which is far away from the second cavity, is inclined upwards relative to one end of the bottom wall of the first cavity, which is close to the second cavity;
the air inlet of the second sealing cover is arranged at the top of the second sealing cover and corresponds to the first cavity, and the air outlet of the second sealing cover is arranged at the top of the second sealing cover and corresponds to the second cavity.
Optionally, the grinding machine further comprises a first sealing cover, and the pellet dry grinding device is positioned in the first sealing cover;
the air inlet of the dust collecting device is also communicated with the air outlet of the first sealing cover and is used for collecting the grinding slag which escapes from the second sealing cover into the first sealing cover;
the air outlet of the gas circulating device is also communicated with the air inlet of the first sealing cover; the gas circulating device is also used for driving gas to circularly flow among the first seal cover, the dust collecting device and the gas circulating device.
Optionally, the dust collecting device comprises a cyclone separator, a filter element, a dust collecting box and a back flushing mechanism;
the filter element is arranged in the middle of the cyclone separator, the back blowing mechanism is communicated with the top of the cyclone separator and used for jetting pulse airflow to the filter element when the filter element needs to be cleaned so as to blow off the grinding slag adsorbed on the filter element, and the dust collecting box is communicated with the bottom of the cyclone separator and used for collecting the grinding slag falling on the filter element;
the air inlet of the dust collecting device is arranged on the side wall of the cyclone separator and corresponds to the position of the filter element, and the air outlet of the dust collecting device is arranged at the top of the cyclone separator.
Optionally, the air outlet of the dust collecting device is communicated with the air inlet of the gas circulating device through a fourth air pipe;
the back flushing mechanism comprises an air storage tank, a connecting pipe and a nozzle, a valve is arranged on the connecting pipe, the upper end of the connecting pipe is connected with the air storage tank, the lower end of the connecting pipe extends into the fourth air pipe and is connected with the nozzle, and the nozzle is located above the filter element.
Optionally, the bottom of the cyclone separator is communicated with the dust collecting box through a dust collecting hopper, and an air hammer is arranged on the dust collecting hopper.
According to the invention, the grinding wheel and the guide wheel of the grinding device are arranged in the second sealing cover, the feeding mechanism for conveying the core blocks passes through the second sealing cover and passes through the dry grinding station formed between the grinding wheel and the guide wheel, so that grinding is smoothly carried out, and most of dust generated in the grinding process is collected in the second sealing cover, thereby avoiding the damage of the grinding part caused by the dust adhered to the surface of the grinding wearing part, and greatly reducing the loss of the dust in the collecting process.
Drawings
Fig. 1 is a schematic perspective view of a pellet dry-milling apparatus according to embodiment 1 of the present invention;
fig. 2 is a schematic front view of a pellet dry-milling apparatus according to embodiment 1 of the present invention;
fig. 3 is a schematic side view of the pellet dry grinding apparatus provided in embodiment 1 of the present invention;
fig. 4 is a schematic perspective view of a pellet dry grinding system provided in embodiment 2 of the present invention;
FIG. 5 is a schematic diagram of a side view of a dry pellet milling system provided in example 2 of the present invention;
FIG. 6 is a schematic perspective view of an assembled dust collecting device and gas circulation device in example 2 of the present invention;
FIG. 7 is a schematic view showing the structure of a dust collecting apparatus in embodiment 2 of the present invention;
fig. 8 is a schematic diagram of a gas circulation loop in the pellet dry grinding system provided in embodiment 2 of the present invention.
In the figure: 1-grinding machine; 2-a dust collecting device; 3-a gas circulation device; 4-pellet dry milling device; 5-a first sealing cover; 6-glove box; 11-a lathe bed; 12-stainless steel plate; 21-a cyclone separator; 22-a filter element; 23-a dust collection box; 24-a blowback mechanism; 25-a dust collecting hopper; 26-air hammer; 31-a first air tube; 32-a second trachea; 33-third trachea; 34-a fourth gas tube; 41-grinding wheel; 42-a guide wheel; 43-a feeding mechanism; 44-a first hold-down mechanism; 45-a second hold-down mechanism; 46-a second sealed housing; 51-glove port; 241-an air storage tank; 242-connecting tube; 243-nozzle; 411 — first drive motor; 421-a second drive motor; 441-a first carriage; 442-a first compacting motor; 443-a first lead screw; 444-lead screw support; 451-a second carriage; 452-a second compacting motor; 453-second lead screw; 461-air inlet; 462-an exhaust port; 463 — a first chamber; 464-a second cavity; 465-guide plate.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
The invention provides a core block dry grinding device, comprising: the second sealing cover, the grinding wheel mechanism, the guide wheel mechanism, the feeding mechanism and the first pressing mechanism;
the grinding wheel mechanism comprises a grinding wheel, the guide wheel mechanism comprises a guide wheel, the grinding wheel and the guide wheel are both positioned in the second sealing cover, the central axes of the grinding wheel and the guide wheel are parallel, and a dry grinding station for the pellets is formed between the grinding wheel and the guide wheel;
the feeding mechanism penetrates through the second sealing cover and is used for conveying the pellets, and the dry grinding station is positioned on a conveying path of the pellets;
the first pressing mechanism is connected with the guide wheel mechanism and used for driving the guide wheel mechanism to be close to or far away from the grinding wheel mechanism so as to press the core blocks on the dry grinding station between the grinding wheel and the guide wheel or release the core blocks.
The invention also provides a core block dry grinding system, which comprises a dust collecting device, a gas circulating device and a grinding machine, wherein the grinding machine comprises the core block dry grinding device,
an air inlet of the dust collecting device is communicated with an air outlet of the second sealing cover and is used for collecting the grinding slag generated by the dry grinding of the core block;
the air inlet of the gas circulating device is communicated with the air outlet of the dust collecting device, and the air outlet of the gas circulating device is communicated with the air inlet of the second sealing cover; the gas circulating device is used for driving gas to circularly flow among the second seal cover, the dust collecting device and the gas circulating device.
Example 1:
the present embodiment provides a core block dry-grinding apparatus, as shown in fig. 1 to fig. 3, which includes: a second seal cover 46, a grinding wheel mechanism, a guide wheel mechanism, a feeding mechanism 43 and a first pressing mechanism 44.
The grinding wheel mechanism comprises a grinding wheel 41, the guide wheel mechanism comprises a guide wheel 42, the grinding wheel 41 and the guide wheel 42 are both positioned in a second sealing cover 46, the central axes of the grinding wheel 41 and the guide wheel 42 are parallel, and a dry grinding station of the pellets is formed between the grinding wheel 41 and the guide wheel 42;
the feeding mechanism 43 passes through the second sealing cover 46 and is used for conveying the core blocks, and the dry grinding station is positioned on the conveying path of the core blocks;
the first pressing mechanism 44 is connected to the guide wheel mechanism for driving the guide wheel mechanism closer to or away from the grinding wheel mechanism to press the pellets on the dry grinding station between the grinding wheel 41 and the guide wheel 42 or to release the pellets.
Therefore, the dust generated in the grinding process is limited in the second sealing cover 46, and the dust in the second sealing cover 46 can be collected through a dust collecting device such as a negative pressure device or a gas circulation filtering type dust collecting device, so that the powder is prevented from being diffused to the surface of each part of the grinding mechanism, particularly a wearing part, the service life of the wearing part is prolonged, and the recovery rate of the dust is improved.
In this embodiment, the inner cavity of the second seal cover 46 includes a first cavity 463 and a second cavity 464, the grinding wheel 41 and the guide wheel 42 are located at the upper portion of the first cavity 463, one end of the lower portion of the first cavity 463, which is far away from the first pressing mechanism 44, extends outward to form the second cavity 464, and one end of the bottom wall of the first cavity 463, which is far away from the second cavity 464, is inclined upward relative to one end of the bottom wall of the second cavity 463.
The second sealing cover 46 is provided with two cavities, which is beneficial to the collection of dust by the gas circulation filtering dust collecting device. Specifically, the gas circulation filtration type dust collecting device blows grinding slag into the second cavity 464 by inflating the first cavity 463, and then sucks air and dust from the second cavity 464 to achieve the purpose of dust collection. Further, when the grinding area is charged with air, the core block and the grinding wheel 41 can be cooled by air to perform a cooling function.
The diapire slope setting of first cavity 463 is convenient for grind the sediment and is gathered to second cavity 464 to improve the rate of recovery of grinding the sediment.
In this embodiment, the feeding mechanism 43 includes a feeding linear vibrator, a guide plate, and a discharging linear vibrator, the feeding linear vibrator, the guide plate, and the discharging linear vibrator are sequentially connected, the feeding linear vibrator and the discharging linear vibrator are respectively disposed on two sides of the dry grinding station along the axial direction of the grinding wheel 41, and the guide plate is located below the dry grinding station.
An inclined jaw convenient for ceramic core blocks to enter a grinding station is arranged at one end, close to the grinding station, of the feeding linear vibrator, the ceramic core blocks are conveyed into the grinding station through the feeding linear vibrator and are placed on a guide plate, and the ceramic core blocks are transferred to the discharging linear vibrator in a vibration mode after being ground.
In this embodiment, the grinding wheel mechanism further includes a first driving motor 411, and the first driving motor 411 is in transmission connection with the grinding wheel 41 and is used for driving the grinding wheel 41 to rotate.
The guide wheel mechanism further comprises a second driving motor 421, and the second driving motor 421 is in transmission connection with the guide wheel 42 and is used for driving the guide wheel 42 to rotate.
The first driving motor 411 and/or the second driving motor 421 are rotation angle motors.
In this embodiment, the first pressing mechanism 44 includes a first carriage 441, a first pressing motor 442, and a first lead screw 443, the first pressing motor 442 is drivingly connected to the first lead screw 443, the first carriage 441 is threadedly connected to the first lead screw 443, and the guide wheel mechanism is disposed on the first carriage 441.
The guide wheel 42 and the second driving motor 421 for driving the guide wheel 42 to rotate are respectively mounted on the first carriage 441, the first pressing motor 442 is in transmission connection with the first carriage 441 through a first lead screw 443, the first pressing motor 442 is also connected with a lead screw support 444, and the position of the guide wheel 42 relative to the lead screw support 444 can be adjusted through the first pressing motor 442 during grinding, so that the guide wheel 42 presses the ceramic core blocks to grind the ceramic core blocks.
In this embodiment, a second pressing mechanism 45 is further included, and the second pressing mechanism 45 is connected to the feeding mechanism 43 and is used for driving the feeding mechanism 43 to approach the grinding wheel 41. When the grinding wheel 41 is worn during grinding, the feeding mechanism 43 is close to the grinding wheel 41 by the second pressing mechanism 45 to supplement the wear amount of the grinding wheel 41, so that the ceramic core blocks can be further pressed by the grinding wheel 41 and the guide wheel 42.
The second pressing mechanism 45 comprises a second carriage 451, a second pressing motor 452 and a second lead screw 453, the second pressing motor 452 is in transmission connection with the second lead screw 453, the second carriage 451 is in threaded connection with the second lead screw 453, and the feeding mechanism 43 is arranged on the second carriage 451.
Specifically, the first carriage 441 is slidably disposed on the second carriage 451, and the second carriage 451 is slidably disposed on the stainless steel plate 12 of the grinding machine 1.
Example 2:
the present embodiment provides a core block dry grinding system, as shown in fig. 4, comprising a dust collecting device 2, a gas circulating device 3 and a grinding machine 1.
The grinding machine 1 comprises a machine body 11, a stainless steel plate 12, a first sealing cover 5 and the pellet dry grinding device of the embodiment 1, wherein the pellet dry grinding device is positioned in the first sealing cover 5, so that dust generated in the dry grinding process can not overflow from a working area.
Wherein, the stainless steel plate 12 is arranged on the lathe bed 11, and the pellet dry grinding device and the first sealing cover 5 are arranged on the stainless steel plate 12. Specifically, the bottom of the stainless steel plate 12 is provided with a first blind hole for connecting with the lathe bed 11, and the top of the stainless steel plate 12 is provided with a second blind hole for connecting with the pellet dry grinding device 4. The lathe bed 11 is connected with the stainless steel plate 12 through the first blind hole, the pellet dry grinding device 4 is connected with the stainless steel plate 12 through the second blind hole, step surfaces are arranged on the periphery of the top of the stainless steel plate 12, and the first sealing cover 5 is connected with the stainless steel plate 12 through the step surfaces, so that the pellet dry grinding device 4 is separated from the lathe bed 11, dust generated in grinding is prevented from contacting with the lathe bed 11, the lathe bed 11 is generally made of cast iron, and after the dust of the ceramic pellet contacts with the cast iron, the quality of the ceramic pellet can be influenced reversely. In addition, the stainless steel plate 12 is adopted to separate the grinding machine 1 from the pellet dry grinding device 4, and the blind holes are respectively adopted for connection, so that the sealing performance in the first sealing cover 5 is fully ensured, and dust leakage is prevented from polluting the environment and damaging the human body.
In order to facilitate the replacement of the parts of the pellet dry grinding device 4, as shown in fig. 5, a glove hole 51 is formed in the first sealing cover 5, and a glove for replacing the parts of the pellet dry grinding device 4 is installed in the glove hole 51. First driving motor 411 in this embodiment, second driving motor 421, first motor 442 and the second motor 452 that compresses tightly adopt the corner motor respectively, the corner motor includes 90 corner motors and 180 corner motors, because adopt gloves to change each part of pellet dry grinding device 4, there is very big restriction to the size of working area among the change process, adopt straight cylinder motor to make the motor change the in-process need accommodate the length of motor in the working area, adopt the corner motor, make the mounted position of motor and motor take place to buckle, conveniently directly operate the mounted position, more convenient to detach.
In this embodiment, the air inlet of the dust collecting device 2 is communicated with the air outlet 462 of the second sealing cover 46 through the second air pipe 32, and is used for collecting the grinding slag generated by the dry grinding of the pellets;
the air inlet of the gas circulation device 3 is communicated with the air outlet of the dust collecting device 2, the air outlet of the gas circulation device 3 is communicated with the air inlet 461 of the second sealing cover 46 through the first air pipe 31, and a circulation main path is formed through the first air pipe 31 to exhaust air into the second sealing cover 46; the gas circulation device 3 is used for driving the gas to circularly flow among the second seal cover 46, the dust collection device 2 and the gas circulation device 3.
In this embodiment, the air inlet of the dust collecting device 2 is also communicated with the air outlet of the first sealing cover 5, and is used for collecting the grinding slag which escapes from the second sealing cover 46 into the first sealing cover 5;
the third air pipe 33 is connected to the first air pipe 31, and the third air pipe 33 communicates with the first sealing cover 5, so that the air outlet of the gas circulation device 3 also communicates with the first sealing cover 5, and the third air pipe 33 forms a circulation branch path to exhaust the air into the first sealing cover 5, so that the gas circulation device 3 also drives the gas to circularly flow among the first sealing cover 5, the dust collecting device 2 and the gas circulation device 3.
Since the second sealing cap 46 is in communication with the first sealing cap 5 through the feed opening (i.e., the opening through which the feed mechanism 43 passes through the second sealing cap 46), part of the dust inevitably enters the first sealing cap 5 during the grinding process. The dust escaping into the first sealing cover 5 is collected through the dust collecting device 2 connected with the first sealing cover 5, and the gas between the first sealing cover 5 and the dust collecting device 2 is circulated through the gas circulating device 3, so that the sealing in the dry grinding treatment process is further ensured, and the energy consumption is reduced.
Specifically, the gas circulation device 3 is a fan, and as shown in fig. 8, the air flow circulation flow of the circulation main path is the second sealing cover 46-the dust collecting device 2-the fan-the second sealing cover 46; the dust generated in the grinding process can be collected in the second sealing cover 46 and enter the dust collecting device 2 for collection, the dust is prevented from being adhered to the surfaces of the first sealing cover 5 and each part of the pellet dry grinding device 4, the dust collecting efficiency and the dust recovery rate are improved, and meanwhile the grinding wheel 41, the guide wheel 42 and the pellets can be cooled.
The airflow circulation flow of the circulation branch is a first sealing cover 5, a second sealing cover 46, a dust collecting device 2, a fan and the first sealing cover 5, so that dust escaping into the first sealing cover 5 in the grinding process enters the dust collecting device 2 to be collected, and clean air enters the first sealing cover 5 again to be recycled.
Negative pressure is formed between the first sealing cover 5 and the second sealing cover 46, and the gas of the first sealing cover 5 flows into the second sealing cover 46, so that the dust generated by grinding is reduced from escaping from the second sealing cover 46, the dust is further prevented from adhering to each part of the grinding mechanism and the surface of the first sealing cover 5, and the recovery rate of the dust is improved. In addition, when absorbing the gaseous dust in the second sealed cowling 46 through dust collector 2, the wind speed is the better to the effect of collection dirt sooner, but when exhausting in the second sealed cowling 46, the too big ceramic pellet that probably blows off from material feeding unit of wind speed, leads to grinding work to go on, can also reduce the wind speed that gas blew into in the second sealed cowling 46 through setting up the circulation branch road in this embodiment, all circulation processes can be realized through a fan for the structure is more retrencied.
In this embodiment, the air inlet 461 of the second sealing cover 46 is disposed at the top of the second sealing cover 46 and corresponds to the first cavity 463, and the air outlet 462 of the second sealing cover 46 is disposed at the top of the second sealing cover 46 and corresponds to the second cavity 464. The grinding area is charged through an inlet 461 and the air and dust in the area are extracted through an outlet 462. When the grinding area is charged with air, the core block and the grinding wheel 41 can be cooled by air, so that the cooling effect is achieved. An air inlet 461 is provided above the grindstone 41 and the guide roller 42, an air outlet 462 is provided below the grindstone 41 and the guide roller 42, and a guide plate 465 inclined toward the air outlet 462 is provided below the grindstone 41 and the guide roller 42, so that dust can be collected in the air outlet 462, thereby improving the recovery rate of dust.
Further, glove boxes 6 are respectively attached to the outer sides of the dust collecting device 2 and the gas circulation device 3 in order to ensure the sealing property between the dust collecting device 2 and the gas circulation device 3.
In this embodiment, as shown in fig. 6 and 7, the dust collecting device 2 includes a cyclone separator 21, a filter element 22, a dust collecting box 23, and a blowback mechanism 24.
The filter element 22 is arranged at the middle position in the cyclone separator 21, the air inlet of the dust collecting device 2 is arranged on the side wall of the cyclone separator 21 corresponding to the position of the filter element 22, the air outlet of the dust collecting device 2 is arranged at the top of the cyclone separator 21, and the air outlet of the dust collecting device 2 is communicated with the air inlet of the gas circulation device 3 through a fourth air pipe 34.
The blowback mechanism 24 is communicated with the top of the cyclone separator 21 and is used for jetting pulse airflow to the filter element 22 when the filter element 22 needs to be cleaned so as to blow off the grinding slag adsorbed on the filter element 22.
The dust collecting box 23 is communicated with the bottom of the cyclone separator 21 through a dust hopper 25 and is used for collecting the grinding slag falling from the filter element 22.
When the dust collecting device 2 works, gas and dust pass through the dust collecting device 2 under the action of the fan, and the dust is collected. Specifically, the whirl air intake is connected 32 with the second trachea, and when gas and dust got into the whirl separation chamber, because the whirl air intake sets up in cyclone 21's side, forms the wind of circling round in the whirl separation intracavity, makes the dust of big granule collide with the inner wall in whirl separation chamber under the effect of centrifugal force to drop and collect in dust collection box 23, form the one-level of dust and remove dust. Particularly, when the cyclone air inlet is arranged, the air direction during air inlet is staggered with the axis of the cyclone separation cavity.
The gas and the unseparated dust in the cyclone separation cavity pass through the filter element 22, so that the small-particle dust is adhered to the filter element 22 to form secondary dust removal of the dust, and the dust on the filter element 22 is blown down into the dust collection box 23 to be collected under the action of the blowback mechanism 24. The two-stage filtration enhances the dust filtration and collection effect.
In this embodiment, the back-blowing mechanism includes an air storage tank 241, a connection pipe 242 and a nozzle 243, the connection pipe 242 is provided with a valve, the upper end of the connection pipe 242 is connected with the air storage tank 241, the lower end of the connection pipe 242 extends into the fourth air pipe 34 and is connected with the nozzle 243, and the nozzle 243 is located above the filter element 22. In this embodiment, in the work engineering of the ceramic pellet dry grinding device, the blower and the nozzle 243 are controlled to work alternately, that is, when the blower works, the motor for driving the blower is turned on, the valve on the nozzle 243 is turned off, the gas is driven to circulate, and the dust is collected, when the nozzle 243 works, the valve on the nozzle 243 is turned on, and the motor for driving the blower is turned off, so that the gas in the gas storage tank 241 is sprayed to the filter element 22 through the nozzle 243, and the dust on the filter element 22 falls off and is collected.
In this embodiment, the dust collecting hopper 25 is an inverted cone structure, and an inverted cone inner cavity is arranged inside the dust collecting hopper 25, so that falling dust can be collected in the dust collecting box 23, a valve is arranged between the dust collecting box 23 and the dust collecting hopper 25, and the valve can be closed to clean the dust after the dust collecting box 23 is full of dust.
In order to prevent the dust from adhering to the inner walls of the cyclone 21 and the dust hopper 25, an air hammer 26 is installed on the side surface of the dust hopper 25, and the dust hopper 25 is struck by the air hammer 26 to generate vibration, so that the dust adhering to the inner walls of the cyclone 21 and the dust hopper 25 can fall into the dust collecting box 23.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and scope of the invention, and such modifications and improvements are also considered to be within the scope of the invention.

Claims (9)

1. A core block dry grinding system comprises a dust collecting device (2), a gas circulating device (3) and a grinding machine (1), and is characterized in that the grinding machine (1) comprises a core block dry grinding device,
the pellet dry grinding device comprises: a second sealing cover (46), a grinding wheel mechanism, a guide wheel mechanism, a feeding mechanism (43) and a first pressing mechanism (44);
the grinding wheel mechanism comprises a grinding wheel (41), the guide wheel mechanism comprises a guide wheel (42), the grinding wheel (41) and the guide wheel (42) are both positioned in a second sealing cover (46), the central axes of the grinding wheel (41) and the guide wheel (42) are parallel, and a dry grinding station for the core block is formed between the grinding wheel (41) and the guide wheel (42);
the feeding mechanism (43) passes through a second sealing cover (46) and is used for conveying the core blocks, and the dry grinding station is positioned on a conveying path of the core blocks;
the first pressing mechanism (44) is connected with the guide wheel mechanism and is used for driving the guide wheel mechanism to be close to or far away from the grinding wheel mechanism so as to press the pellets on the dry grinding station between the grinding wheel (41) and the guide wheel (42) or release the pellets;
an air inlet of the dust collecting device (2) is communicated with an air outlet (462) of the second sealing cover (46) through a second air pipe (32) and is used for collecting the grinding slag generated by the dry grinding of the core blocks;
the air inlet of the gas circulating device (3) is communicated with the air outlet of the dust collecting device (2), the air outlet of the gas circulating device (3) is communicated with the air inlet (461) of the second sealing cover (46) through the first air pipe (31), and the gas circulating device (3) is used for driving gas to circularly flow among the second sealing cover (46), the dust collecting device (2) and the gas circulating device (3);
the grinding machine (1) also comprises a first sealing cover (5), and the pellet dry grinding device is positioned in the first sealing cover (5);
the first air pipe (31) is connected with a third air pipe (33), and the third air pipe (33) is communicated with the first sealing cover (5).
2. The pellet dry grinding system according to claim 1, characterized in that the inner cavity of the second sealing cover (46) comprises a first cavity (463) and a second cavity (464), the grinding wheel (41) and the guide wheel (42) of the pellet dry grinding device are positioned at the upper part of the first cavity (463), one end of the lower part of the first cavity (463) far away from the first pressing mechanism (44) extends outwards to form the second cavity (464), and one end of the bottom wall of the first cavity (463) far away from the second cavity (464) is inclined upwards relative to one end close to the second cavity (464);
the air inlet of the second sealing cover (46) is arranged at the top of the second sealing cover (46) and corresponds to the first cavity (463), and the air outlet of the second sealing cover (46) is arranged at the top of the second sealing cover (46) and corresponds to the second cavity (464).
3. Pellet dry milling system according to claim 1 or 2, characterized in that the dust collecting device (2) comprises a cyclone (21), a filter cartridge (22), a dust collection box (23) and a blowback mechanism (24);
the filter element (22) is arranged at the middle position in the cyclone separator (21), the back blowing mechanism (24) is communicated with the top of the cyclone separator (21) and is used for jetting pulse airflow to the filter element (22) when the filter element (22) needs to be cleaned so as to blow off the grinding slag adsorbed on the filter element (22), and the dust collecting box (23) is communicated with the bottom of the cyclone separator (21) and is used for collecting the grinding slag falling off the filter element (22);
the air inlet of the dust collecting device (2) is arranged on the side wall of the cyclone separator (21) and corresponds to the position of the filter element (22), and the air outlet of the dust collecting device (2) is arranged at the top of the cyclone separator (21).
4. Pellet dry grinding system according to claim 3, characterized in that the air outlet of the dust collecting device (2) communicates with the air inlet of the gas circulation device (3) through a fourth air pipe (34);
the blowback mechanism includes gas holder (241), connecting pipe (242) and nozzle (243), be provided with the valve on connecting pipe (242), the upper end and gas holder (241) of connecting pipe (242) are connected, and its lower extreme stretches into in fourth trachea (34) and is connected with nozzle (243), nozzle (243) are located the top of filter core (22).
5. Pellet dry grinding system according to claim 3, characterized in that the bottom of the cyclone (21) communicates with the dust collection box (23) through a dust hopper (25), on which dust hopper (25) an air hammer (251) is arranged.
6. Pellet dry grinding system according to claim 1 or 2, characterized in that the feeding mechanism (43) comprises a feeding linear vibrator, a guide plate and a discharging linear vibrator, which are connected in sequence, the feeding linear vibrator and the discharging linear vibrator are respectively arranged on both sides of the dry grinding station in the axial direction of the grinding wheel (41), and the guide plate is arranged below the dry grinding station.
7. Pellet dry grinding system according to claim 1 or 2, characterized in that the pellet dry grinding device further comprises a second pressing mechanism (45), said second pressing mechanism (45) being connected to the feeding mechanism (43) for driving the feeding mechanism (43) close to the grinding wheel (41).
8. The pellet dry milling system of claim 7, wherein the first pressing mechanism (44) comprises a first carriage (441), a first pressing motor (442) and a first lead screw (443), the first pressing motor (442) and the first lead screw (443) are in driving connection, the first carriage (441) and the first lead screw (443) are in threaded connection, and the guide wheel mechanism is arranged on the first carriage (441);
the second pressing mechanism (45) comprises a second sliding frame (451), a second pressing motor (452) and a second lead screw (453), the second pressing motor (452) is in transmission connection with the second lead screw (453), the second sliding frame (451) is in threaded connection with the second lead screw (453), and the feeding mechanism (43) is arranged on the second sliding frame (451);
the first carriage (441) and the second carriage (451) are slidably connected.
9. Pellet dry grinding system according to claim 1 or 2, characterized in that the grinding wheel mechanism further comprises a first drive motor (411), the first drive motor (411) being in driving connection with the grinding wheel (41) for driving the grinding wheel (41) in rotation;
the guide wheel mechanism further comprises a second driving motor (421), and the second driving motor (421) is in transmission connection with the guide wheel (42) and is used for driving the guide wheel (42) to rotate;
the first driving motor (411) and/or the second driving motor (421) are/is a corner motor.
CN202110859086.3A 2021-07-28 2021-07-28 Core block dry grinding device and system Active CN113618560B (en)

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Application Number Priority Date Filing Date Title
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JP2519112B2 (en) * 1990-01-06 1996-07-31 富士ゼロックス株式会社 Elastic roll for fixing with excellent releasability
CN203003627U (en) * 2012-11-14 2013-06-19 中信戴卡股份有限公司 Wheel wobble blurring device
CN203546125U (en) * 2013-11-07 2014-04-16 湖北新冶钢特种钢管有限公司 Double-layered smoke hood of gas protection electric slag furnace
CN108854399A (en) * 2018-07-25 2018-11-23 徐州好百年家具有限公司 A kind of deduster for avoiding dust from inversely spreading
CN209080218U (en) * 2018-12-04 2019-07-09 广州山河环保科技有限公司 A kind of feeding seal device
CN210366060U (en) * 2019-07-17 2020-04-21 广汉市蜀汉粮油机械有限公司 Novel movable grain unloading and dust preventing device
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CN210818780U (en) * 2019-10-22 2020-06-23 威海环海钓具有限公司 Centerless grinding machine
CN211707683U (en) * 2020-01-11 2020-10-20 郑州天力粮食工程有限公司 Dust removing device for grinding roller of flour mill
CN111251091A (en) * 2020-01-17 2020-06-09 中国核电工程有限公司 Core block dry grinding and grinding slag collecting device

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