CN110978299A - Stone material cutting raise dust water spray subsides and circulating water treatment facilities - Google Patents

Stone material cutting raise dust water spray subsides and circulating water treatment facilities Download PDF

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Publication number
CN110978299A
CN110978299A CN201911163935.0A CN201911163935A CN110978299A CN 110978299 A CN110978299 A CN 110978299A CN 201911163935 A CN201911163935 A CN 201911163935A CN 110978299 A CN110978299 A CN 110978299A
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CN
China
Prior art keywords
cutting
receiving tank
stone
water
water receiving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911163935.0A
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Chinese (zh)
Inventor
王增魁
匡金宏
匡书培
梁建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leiyang Xinshun Stone Co Ltd
Original Assignee
Leiyang Xinshun Stone Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leiyang Xinshun Stone Co Ltd filed Critical Leiyang Xinshun Stone Co Ltd
Priority to CN201911163935.0A priority Critical patent/CN110978299A/en
Publication of CN110978299A publication Critical patent/CN110978299A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28DWORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/22Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
    • B28D1/24Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising with cutting discs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/03Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06Spray cleaning
    • B01D47/063Spray cleaning with two or more jets impinging against each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28DWORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00Accessories specially adapted for use with machines or devices of the preceding groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28DWORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/02Accessories specially adapted for use with machines or devices of the preceding groups for removing or laying dust, e.g. by spraying liquids; for cooling work

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The invention discloses stone cutting raise dust water spray sedimentation and circulating water treatment equipment, relates to the technical field of stone processing, and mainly solves the problem of dust treatment generated in the existing stone processing process; the dust-settling water-circulation dust-settling device mainly comprises a base, wherein a shell is arranged on the base, cutting tables are symmetrically arranged in the shell, a water-receiving backflow pipe is arranged on each cutting table, a hydraulic seat is arranged at the bottom end of the shell and connected with a hydraulic column, the front end of the hydraulic column is rotatably connected with a blade, an electric nozzle is arranged on each cutting table and connected with a guide pipe, a water receiving tank is arranged in the middle of the lower side of each cutting table, an electric pump is arranged in each water receiving tank and connected with the guide pipe, and the dust-settling water-circulation dust-settling device achieves dust-settling effect and water circulation through the backflow pipe, the water receiving tank, the electric pump, the.

Description

Stone material cutting raise dust water spray subsides and circulating water treatment facilities
Technical Field
The invention relates to the technical field of stone cutting equipment, in particular to stone cutting raise dust water spraying sedimentation and circulating water treatment equipment.
Background
Common stone materials in the market at present mainly comprise natural stone and artificial stone, the natural stone is divided into slate and granite according to the quality of physical and chemical characteristics, the artificial stone is divided into terrazzo and synthetic stone according to the working procedures, and the terrazzo is formed by forging and pressing raw materials such as cement, concrete and the like.
No matter be natural stone or rostone, carry out the degree of depth and add man-hour, all need cut the stone material, can produce a large amount of dusts during the stone material cutting, current stone material cutting device does not have corresponding dust fall to handle, produces very big influence to human health.
Disclosure of Invention
An embodiment of the present invention provides a stone cutting raise dust water spray sedimentation and circulating water treatment apparatus, so as to solve the problems proposed in the above background art.
The utility model provides a stone material cutting raise dust water spray subsides and circulating water treatment facilities, includes the base, be provided with the casing on the base, be provided with the cutting bed in the casing, its characterized in that, the top of casing is provided with cutting device, the cutting bed sets up for the symmetry, the upper surface of cutting bed is provided with transport roller in succession, place the stone material body on the transport roller, transport roller links to each other with power device, install electronic shower nozzle on the cutting bed, electronic shower nozzle links to each other with the pipe, be provided with the back flow on the cutting bed, the water receiving tank has been placed to the downside of cutting bed, be provided with the charge pump in the water receiving tank, the charge pump links to each other with the pipe, the back flow sets up directly over the water.
As a further scheme of the embodiment of the invention: the cutting device comprises a hydraulic seat, the hydraulic seat is connected with a hydraulic column, the hydraulic column is rotatably connected with the blade through a rotating shaft, and a first motor used for driving the blade is arranged on the hydraulic column.
As a further scheme of the embodiment of the invention: filter equipment includes first sieve and second sieve, be provided with the sieve grillage in the water receiving case, first sieve and second sieve pass through sieve grillage and water receiving case sliding connection.
As a further scheme of the embodiment of the invention: the bottom of the water receiving tank is provided with universal wheels.
As a further scheme of the embodiment of the invention: the bottom of cutting bed is connected the adjustment post, be provided with the cavity under the casing, the adjustment post is connected the thread bush, the thread bush links to each other with two-way lead screw, two-way lead screw cooperation thread bush and cavity sliding connection, two-way lead screw and second motor rotate to be connected.
As a further scheme of the embodiment of the invention: the bidirectional screw rod is installed in a cavity of the shell through a bearing.
As a further scheme of the embodiment of the invention: handles are arranged on the first sieve plate and the second sieve plate.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: the invention realizes dust-fall treatment of dust generated during cutting of a stone body through the arrangement of the cutting table, the electric spray head, the water receiving tank, the electric pump and the guide pipe which are symmetrically arranged in a separating way, enables most dust-fall sewage to flow back to the water receiving tank through a gap generated during cutting of the stone body, enables a part of dust-fall sewage to flow back to the water receiving tank through the return pipe on the cutting table, and returns back to the electric spray head through the electric pump and the guide pipe after being filtered by the first sieve plate and the second sieve plate of the water receiving tank to achieve the treatment of cyclic water spray dust fall.
Drawings
Fig. 1 is a schematic structural diagram of a stone cutting raise dust water spray sedimentation and circulating water treatment device.
Fig. 2 is a schematic structural diagram of a water receiving tank in the stone cutting raise dust water spraying sedimentation and circulating water treatment equipment.
Fig. 3 is a schematic structural diagram of a cutting table in stone cutting raise dust water spray sedimentation and circulating water treatment equipment.
In the figure: 1-base, 2-shell, 3-cutting table, 4-conveying roller, 5-stone body, 6-hydraulic base, 7-hydraulic column, 8-first motor, 9-blade, 10-rotating shaft, 11-electric nozzle, 12-return pipe, 13-guide pipe, 14-adjusting column, 15-threaded sleeve, 16-bidirectional screw rod, 17-bearing, 18-second motor, 19-water receiving tank, 20-electric pump, 21-universal wheel, 22-first sieve plate, 23-second sieve plate, 24-sieve plate frame and 25-handle.
Detailed Description
In the description of the present invention, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "top," "bottom," "inner," "outer," etc. indicate orientations or positional relationships based on those illustrated in the drawings, which are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Example 1:
a stone cutting raise dust water spray settlement and circulating water treatment device comprises a base 1, wherein a shell 2 is arranged on the base 1, cutting tables 3 are arranged in the shell 2, the cutting tables 3 are symmetrically arranged and are spaced at intervals, so that a blade 9 can not touch when being lowered, a cutting device is arranged at the top of the shell 2, a conveying roller 4 is continuously arranged on the upper surface of each cutting table 3, a stone body 5 is placed on each conveying roller 4, each conveying roller 4 is connected with a power device, the stone body 5 can be pushed forwards through each conveying roller 4, an electric nozzle 11 is arranged on each cutting table 3, the electric nozzle 11 is connected with a conduit 13, the electric nozzle 11 sprays water at a cutting position, dust generated by cutting is reduced in real time, a return pipe 12 is arranged on each cutting table 3, and a water receiving tank 19 is placed on the lower side of each cutting table 3, the sewage after dust fall is guided into a water receiving tank 19 through a return pipe 12, an electric pump 20 is arranged in the water receiving tank 19, the electric pump 20 is connected with a conduit 13, the return pipe 12 is arranged right above the water receiving tank 19, and a filtering device is arranged in the water receiving tank 19, so that the sewage mixed with dust is cleaned through the filtering device and can be recycled.
Further, cutting device includes hydraulic pressure seat 6, hydraulic pressure post 7 is connected to hydraulic pressure seat 6, and the position of blade 9 can be adjusted in the use of hydraulic pressure post 7, hydraulic pressure post 7 rotates with blade 9 through pivot 10 to be connected, be provided with the first motor 8 that is used for driving blade 9 on the hydraulic pressure post 7, drive blade 9 through the motor and rotate, cut stone material body 5, at the in-process of cutting, dust is walked to 11 spun hosepipes of electric spray head, and most sewage falls to the water receiving tank from the breach of cutting.
Further, filter equipment includes first sieve 22 and second sieve 23, be provided with sieve frame 24 in the water receiving tank 19, first sieve 22 and second sieve 23 pass through sieve frame 24 and water receiving tank 19 sliding connection.
Specifically, the first sieve plate 22 and the second sieve plate 23 perform secondary cleaning on the sewage, and the filtered sewage is sent back to the electric nozzle 11 through the electric pump 20 to participate in the dust settling treatment again.
According to the stone cutting dust spraying sedimentation and circulating water treatment equipment shown in the embodiment, dust falling treatment is performed on dust generated in the cutting process through the electric spray pipe arranged on the cutting table 3 and the electric pump 20 in the water receiving tank, most of sewage generated in the dust falling process flows into the water receiving tank 19 placed in advance below through gaps generated in the cutting of the stone body 5, part of sewage is blocked and returned to the surface of the cutting table 3, the part of sewage is guided back to the water receiving tank 19 through the return pipe 12 arranged in advance on the surface of the cutting table 3, so that all water used in the dust falling process returns to the water receiving tank 19, the upper part of the water receiving tank 19 is provided with the filtering devices which are the first sieve plate 22 and the second sieve plate 23 respectively, after the sewage is filtered through the first sieve plate 22 and the second sieve plate 23, the water quality reaches the quality of dust falling again, and in fact, the water for dust fall only needs to ensure that no large-particle impurities exist in the water, and the electric pump 20 is prevented from being damaged, the guide pipe 13 is prevented from being blocked, and the like, so that the two layers of filtering devices of the first sieve plate 22 and the second sieve plate 23 are enough to ensure the filtering effect.
Example 2:
this embodiment is a further improvement and a limitation of embodiment 1 on the basis of embodiment 1.
A stone material cutting raise dust water spray settlement and circulating water treatment equipment, includes all parts in embodiment 1, still includes:
further, the bottom of water receiving box 19 is provided with universal wheel 21, and universal wheel 21 can make things convenient for the removal of water receiving box 19 to arrange, and when the cutting was ended, can take out casing 2 with water receiving box 19 through universal wheel 21 conveniently, clear up and carry out operations such as moisturizing in the water receiving box 19 and the first sieve 22 and the second sieve 23 in the water receiving box 19 to and the water receiving box 19.
Furthermore, the bottom end of the cutting table 3 is connected with an adjusting column 14, a cavity is arranged under the shell 2, the adjusting column 14 is connected with a threaded sleeve 15, the threaded sleeve 15 is connected with a bidirectional screw rod 16, the bidirectional screw rod is matched with the threaded sleeve 15 and is in sliding connection with the cavity, and the bidirectional screw rod 16 is rotatably connected with a second motor 18.
In particular, through the arrangement, the distance between the cutting tables 3 which are symmetrically arranged can be adjusted by means of the second motor 18 and the bidirectional screw mandrel 16, so that the cutting device has the advantages of being suitable for cutting operations of stone bodies 5 with different sizes, expanding the application range of the device and reducing the limitation.
Further, the bidirectional screw 16 is mounted in a cavity of the housing 2 through a bearing 17.
Further, a handle 25 is arranged on the first sieve plate 22 and the second sieve plate 23.
Specifically, the handle 25 can quickly take out the first sieve plate 22 and the second sieve plate 23 from the water receiving tank 19, and clean the impurities deposited on the first sieve plate 22 or the second sieve plate 23.
More specifically, the advantage of having both the first screen 22 and the second screen 23 in the water receiving tank 19 is that when one of them is cleaned, the other continues to perform the filtering function.
A stone material cutting raise dust water spray settlement and circulating water treatment facilities that above-mentioned embodiment demonstrates has increased second motor 18 and two-way lead screw 16 in the bottom of casing 2 for the distance between cutting bed 3 becomes adjustable, through starting second motor 18, can adjust the distance of cutting bed 3 to present at the certain limit, has enlarged the scope of 5 cutting sizes of stone material body, has reduced the device's limitation.
It should be noted that: the invention realizes dust-fall treatment of dust generated during cutting of a stone body through the arrangement of the cutting table, the electric spray head, the water receiving tank, the electric pump and the guide pipe which are symmetrically arranged in a separating way, enables most dust-fall sewage to flow back to the water receiving tank through a gap generated during cutting of the stone body, enables a part of dust-fall sewage to flow back to the water receiving tank through the return pipe on the cutting table, and returns back to the electric spray head through the electric pump and the guide pipe after being filtered by the first sieve plate and the second sieve plate of the water receiving tank to achieve the treatment of cyclic water spray dust fall.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. A stone cutting raise dust water spray settlement and circulating water treatment device comprises a base (1), wherein a shell (2) is arranged on the base (1), a cutting table (3) is arranged in the shell (2), and the stone cutting device is characterized in that a cutting device is arranged at the top of the shell (2), the cutting table (3) is symmetrically arranged, a conveying roller (4) is continuously arranged on the upper surface of the cutting table (3), a stone body (5) is placed on the conveying roller (4), the conveying roller (4) is connected with a power device, an electric nozzle (11) is installed on the cutting table (3), the electric nozzle (11) is connected with a guide pipe (13), a return pipe (12) is arranged on the cutting table (3), a water receiving tank (19) is placed on the lower side of the cutting table (3), and an electric pump (20) is arranged in the water receiving tank (19), the electric pump (20) is connected with the guide pipe (13), the return pipe (12) is arranged right above the water receiving tank (19), and the filtering device is arranged in the water receiving tank (19).
2. A stone cutting raise dust water spray settlement and circulating water treatment equipment according to claim 1, characterized in that, the cutting device includes hydraulic base (6), hydraulic base (6) connect hydraulic column (7), hydraulic column (7) are connected with blade (9) through pivot (10) rotation, be provided with first motor (8) that is used for driving blade (9) on hydraulic column (7).
3. A stone cutting raise dust water spray settlement and circulating water treatment equipment as claimed in claim 1, characterized in that, filter equipment includes first sieve board (22) and second sieve board (23), be provided with sieve grillage (24) in water receiving tank (19), first sieve board (22) and second sieve board (23) pass through sieve grillage (24) and water receiving tank (19) sliding connection.
4. A stone cutting raise dust water spray settlement and circulating water treatment equipment according to claim 3, characterized in that the first sieve plate (22) and the second sieve plate (23) are provided with handles (25).
5. A stone cutting raise dust water spray settlement and circulating water treatment equipment as claimed in claim 3, characterized in that the bottom of the water receiving tank (19) is provided with universal wheels (21).
6. The stone cutting raise dust water spray settlement and circulating water treatment equipment as claimed in claim 1, wherein the bottom end of the cutting table (3) is connected with an adjusting column (14), a cavity is arranged right below the shell (2), the adjusting column (14) is connected with a threaded sleeve (15), the threaded sleeve (15) is connected with a bidirectional screw rod (16), the bidirectional screw rod is matched with the threaded sleeve (15) to be in sliding connection with the cavity, and the bidirectional screw rod (16) is rotatably connected with a second motor (18).
7. A stone cutting raise dust water spray settlement and circulating water treatment equipment as claimed in claim 6, characterized in that, the bidirectional screw rod (16) is installed in the cavity of the shell (2) through a bearing (17).
CN201911163935.0A 2019-11-25 2019-11-25 Stone material cutting raise dust water spray subsides and circulating water treatment facilities Pending CN110978299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911163935.0A CN110978299A (en) 2019-11-25 2019-11-25 Stone material cutting raise dust water spray subsides and circulating water treatment facilities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911163935.0A CN110978299A (en) 2019-11-25 2019-11-25 Stone material cutting raise dust water spray subsides and circulating water treatment facilities

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CN110978299A true CN110978299A (en) 2020-04-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111686978A (en) * 2020-06-23 2020-09-22 徐州伟盛机械制造有限公司 Spare part processing equipment that sprays paint
CN111844468A (en) * 2020-07-21 2020-10-30 李平 Automatic grinding device of car stone head
CN111889800A (en) * 2020-07-24 2020-11-06 盐城鼎恒机械有限公司 Scrap collecting mechanism of horizontal circular saw mark machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204438150U (en) * 2014-12-15 2015-07-01 西安越度机电科技有限公司 Based on the cement plant chimney automatic dustfall cylinder of Spiral fan
CN107053496A (en) * 2017-06-24 2017-08-18 李明 A kind of stone machining equipment with dust suction subassembly
CN107498718A (en) * 2017-09-17 2017-12-22 褚森冰 A kind of stone cutting device of temperature lowering water reusable edible
CN109834854A (en) * 2019-03-19 2019-06-04 青岛石尚石业有限公司 A kind of dust-proof cutter device of safe and reliable processing of stone
CN209289544U (en) * 2018-08-02 2019-08-23 深圳市汇莱福珠宝首饰有限公司 A kind of clamping device for jewelry processing
CN209350623U (en) * 2018-11-28 2019-09-06 深圳市盛世美钰珠宝首饰有限公司 A kind of jade cutting structure
CN110394906A (en) * 2019-08-05 2019-11-01 淮北市腾威机械设备有限公司 A kind of environment-friendly type stone plate cutting device
CN209616037U (en) * 2018-08-08 2019-11-12 佛山市高进建设工程有限公司 A kind of construction ceramic tile cutting stabilising arrangement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204438150U (en) * 2014-12-15 2015-07-01 西安越度机电科技有限公司 Based on the cement plant chimney automatic dustfall cylinder of Spiral fan
CN107053496A (en) * 2017-06-24 2017-08-18 李明 A kind of stone machining equipment with dust suction subassembly
CN107498718A (en) * 2017-09-17 2017-12-22 褚森冰 A kind of stone cutting device of temperature lowering water reusable edible
CN209289544U (en) * 2018-08-02 2019-08-23 深圳市汇莱福珠宝首饰有限公司 A kind of clamping device for jewelry processing
CN209616037U (en) * 2018-08-08 2019-11-12 佛山市高进建设工程有限公司 A kind of construction ceramic tile cutting stabilising arrangement
CN209350623U (en) * 2018-11-28 2019-09-06 深圳市盛世美钰珠宝首饰有限公司 A kind of jade cutting structure
CN109834854A (en) * 2019-03-19 2019-06-04 青岛石尚石业有限公司 A kind of dust-proof cutter device of safe and reliable processing of stone
CN110394906A (en) * 2019-08-05 2019-11-01 淮北市腾威机械设备有限公司 A kind of environment-friendly type stone plate cutting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111686978A (en) * 2020-06-23 2020-09-22 徐州伟盛机械制造有限公司 Spare part processing equipment that sprays paint
CN111686978B (en) * 2020-06-23 2022-02-22 徐州伟盛机械制造有限公司 Spare part processing equipment that sprays paint
CN111844468A (en) * 2020-07-21 2020-10-30 李平 Automatic grinding device of car stone head
CN111889800A (en) * 2020-07-24 2020-11-06 盐城鼎恒机械有限公司 Scrap collecting mechanism of horizontal circular saw mark machine

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Application publication date: 20200410

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