CN111420873A - Adjustable-amplitude screening equipment for shield construction muck treatment - Google Patents
Adjustable-amplitude screening equipment for shield construction muck treatment Download PDFInfo
- Publication number
- CN111420873A CN111420873A CN202010246182.6A CN202010246182A CN111420873A CN 111420873 A CN111420873 A CN 111420873A CN 202010246182 A CN202010246182 A CN 202010246182A CN 111420873 A CN111420873 A CN 111420873A
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- Prior art keywords
- amplitude
- screening equipment
- laminated plate
- adjustable
- screening
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/34—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
- B07B1/343—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen with mechanical drive elements other than electromagnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention belongs to the technical field of shield construction muck treatment, and particularly relates to an amplitude-adjustable screening device for shield construction muck treatment. The problem of among the prior art vibrating screen device adopt same amplitude can reduce vibrating screen device's throughput and adaptability is solved. The technical scheme of the invention is as follows: the vibrating screen comprises a screening equipment box body (2), wherein a screen (3), a spring assembly (1) and a vibrating device (5) are arranged in the vibrating screening equipment box body (2), and an amplitude adjusting device is arranged in the spring assembly (1). The invention can change the vibration amplitude of the spring assembly, thereby adjusting the amplitude of the screening equipment, enabling the screening equipment to work under different amplitudes, improving the processing capacity and adaptability of the screening equipment, and being suitable for the processing of the shield construction muck.
Description
Technical Field
The invention belongs to the technical field of shield construction muck treatment, and particularly relates to an amplitude-adjustable screening device for shield construction muck treatment.
Background
At present, the direct outward transportation mode is adopted for treating the muck generated by shield construction, but the environment is polluted by directly transporting and burying the muck outward, a large amount of available resources in the muck are wasted, and therefore, the muck is treated in a grading mode by adopting a vibration screening mode in partial construction sites.
In the prior art, the residue soil excavated by the shield machine can be conveyed to the vibration screening device in various modes, and the stratum penetrated by the shield machine is often complex, the properties of sand and stone are unstable, so that the amplitude of the vibration screening device can be properly adjusted according to different types and different particle sizes of sand and stone, and the processing capacity and the adaptability of the vibration screening device can be reduced by always adopting the same amplitude.
Therefore, in order to solve the above problems, the vibration screening device needs to be improved to meet the residue soil screening requirements under different conditions, and the treatment capacity of the vibration screening device on the residue soil is improved.
Disclosure of Invention
Aiming at the problem that the processing capacity and the adaptability of a vibration screening device can be reduced by adopting the same amplitude in the prior art, the invention provides an amplitude-adjustable screening device for shield construction muck processing, which aims to solve the problems that: the screening equipment can work under different amplitudes, and the processing capacity and the adaptability of the screening equipment are improved.
The technical scheme adopted by the invention is as follows:
the utility model provides an adjustable screening equipment of amplitude for shield structure construction dregs is handled, includes the screening equipment box, be provided with screen cloth, spring assembly and vibrating device in the vibration screening equipment box, be provided with amplitude adjusting device in the spring assembly.
After adopting this technical scheme, amplitude adjusting device can change spring assembly's vibration range to the amplitude of adjustment screening equipment makes screening equipment can work under different amplitudes, improves its throughput and adaptability.
Preferably, the spring assembly comprises an upper mounting seat and a lower mounting seat, an upper laminated plate and a lower laminated plate are arranged between the upper mounting seat and the lower mounting seat, a vibration spring is arranged between the upper laminated plate and the lower laminated plate, a connecting piece is arranged at the upper end of the vibration spring and movably connected with the upper laminated plate, and the upper end of the connecting piece is fixedly connected with the upper mounting seat.
After adopting this preferred scheme, spring unit is connected with vibration screening equipment box through last mount pad, and vibrating device produces the vibration to give vibrating spring with vibration transmission through last mount pad, vibrating spring can enough provide rigidity for vibration about screening equipment, guarantees screening equipment's normal work, can reduce the noise that the vibration produced again.
Preferably, the amplitude adjusting device consists of a bolt and a bolt spring, two ends of the bolt are respectively connected with the upper laminated plate and the lower laminated plate, and the bolt spring is sleeved on the outer side of the bolt.
After adopting this preferred scheme, can change bolt spring's the degree of compressing tightly through rotating the bolt to change vibrating spring's stroke, reach the purpose that changes the amplitude of screening equipment. The processing capacity and adaptability of the screening device to different types of muck are improved by changing the amplitude of the screening device.
Preferably, a guide shaft is arranged inside the vibration spring, the upper end of the guide shaft is fixedly connected with the upper mounting seat, and the guide shaft is connected with the lower mounting seat in a sliding manner along the axis direction of the guide shaft.
After adopting this preferred scheme, the guiding axle makes vibration screening equipment box can only vibrate along the axis direction of guiding axle, can restrict the lateral shifting of screening equipment, prevents that screening equipment from taking place horizontal unstability, improves the stability of screening equipment.
Preferably, the present invention further comprises a distance sensor, wherein a transmitting end and a receiving end of the distance sensor are respectively disposed on the upper laminate and the lower laminate, and the distance sensor is connected with a display.
After the optimal scheme is adopted, the distance between the upper laminated plate and the lower laminated plate can be measured by the distance sensor, so that the amplitude of the screening equipment is measured and displayed by the display, an operator can visually see the amplitude conveniently, and the operator can adjust the amplitude conveniently.
Preferably, the distance sensor is connected with a console, and the console is provided with an alarm device.
The amplitude of control cabinet can remote monitoring screening equipment, when the bolt becomes flexible the amplitude that leads to screening equipment and the amplitude of settlement great error appears, the alarm device of control cabinet begins to report to the police, reminds the staff to go to the processing. After the preferable scheme is adopted, the stability of the amplitude of the screening equipment can be improved.
Preferably, a material collecting disc is arranged in the screening equipment box body and located below the screen.
After adopting this preferred scheme, the aggregate dish can be collected the undersize thing that leaks from the screen cloth.
Preferably, the material collecting disc is provided with an inclined angle, and a first chute is arranged on the lower side of the material collecting disc.
After adopting this preferred scheme, the aggregate dish vibrates along with vibration screening equipment box, transports lower one end from higher one end with the undersize thing, then collects through first chute.
Preferably, the screen has an inclined angle, and a second chute is arranged at the lower side of the screen.
After adopting this preferred scheme, the screen cloth vibrates along with the vibratory screening equipment box, and the oversize is transported to lower side through the vibration from the higher side of screen cloth, then collects through the second chute.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. be provided with amplitude adjustment device among the spring unit, amplitude adjustment device can change spring unit's vibration range to the amplitude of adjustment screening equipment makes screening equipment can work under different amplitudes, improves its throughput and adaptability.
2. Be provided with vibrating spring between last lamination board and the lower lamination board, vibrating spring can enough provide rigidity for the vibration from top to bottom of screening equipment, guarantees the normal work of screening equipment, can reduce the noise that the vibration produced again.
3. The vibration amplitude adjusting device is composed of a bolt and a bolt spring, two ends of the bolt are respectively connected with the upper laminated plate and the lower laminated plate, the bolt spring is sleeved on the outer side of the bolt, the compression degree of the bolt spring can be changed by rotating the bolt, and therefore the stroke of the vibration spring is changed, and the purpose of changing the vibration amplitude of the screening equipment is achieved. The processing capacity and adaptability of the screening device to different types of muck are improved by changing the amplitude of the screening device.
4. The guide shaft makes the vibration screening equipment box vibrate only along the axis direction of the guide shaft, can restrict the transverse movement of the screening equipment, prevents the screening equipment from generating transverse instability, and improves the stability of the screening equipment.
5. The distance sensor can measure the distance between the upper laminated plate and the lower laminated plate, so that the amplitude of the screening equipment is measured and displayed through the display, an operator can visually see the amplitude conveniently, and the operator can adjust the amplitude conveniently.
6. The amplitude that the control cabinet can remote monitoring screening equipment, when the bolt becomes flexible the amplitude that leads to screening equipment and the amplitude of settlement great error appears, the alarm device of control cabinet begins to report to the police, reminds the staff to go to the processing, can improve the stability of the amplitude of screening equipment.
7. The screening equipment box is internally provided with a material collecting disc, and the material collecting disc can collect undersize materials leaked from the screen.
8. The aggregate disc has the angle of slope, is provided with first chute in the lower one side of aggregate disc, and the aggregate disc is along with the vibration of vibration screening equipment box, transports lower one end from higher one end with the undersize thing, then collects through first chute.
9. The screen cloth has the angle of slope, is provided with the second chute in the lower side of screen cloth, and the screen cloth vibrates along with the vibratory screening equipment box, and the oversize thing is transported to lower side through the vibration from the higher side of screen cloth, then collects through the second chute.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a spring assembly;
fig. 3 is a side view of the spring assembly.
The screening device comprises a spring assembly 1, a screening device box 2, a screen 3, a material collecting disc 4, a vibrating device 5, a first chute 6, a chute 7, an upper mounting seat 101, a bolt 102, an upper laminated plate 103, a guide shaft 104, a bolt spring 105, a vibrating spring 106, a lower laminated plate 107 and a lower mounting seat 108.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1 to 3.
The utility model provides an adjustable screening equipment of amplitude for shield structure construction dregs is handled, includes screening equipment box 2, be provided with screen cloth 3 in the vibration screening equipment box 2, the lower part and the upper portion of vibration screening equipment box 2 fixedly connected with spring assembly 1 and vibrating device 5 respectively. In this embodiment, the vibration device 5 is an excitation motor. An amplitude adjusting device is arranged in the spring assembly 1.
Spring assembly includes mount pad 101 and mount pad 108 down, goes up mount pad 101 and vibratory screening equipment box 2 bolted connection, and mount pad 108 and foundation fixed connection down. An upper laminated plate 103 and a lower laminated plate 107 are arranged between the upper mounting seat 101 and the lower mounting seat 108, a vibration spring 106 is arranged between the upper laminated plate 103 and the lower laminated plate 107, and a connecting piece 109 is arranged at the upper end of the vibration spring 106. In this embodiment, the connecting member 109 is shaped like an inverted T, the upper portion of the connecting member 109 penetrates through the upper laminate 103 and is slidably connected to the upper laminate, and the upper end of the connecting member 109 is fixedly connected to the upper mounting base 101 as a whole.
The vibration generated by the excitation motor is transmitted to the vibration spring 106 through the vibration screening equipment box body 2, the upper mounting seat 101 and the connecting piece 109, and the vibration spring 106 provides rigidity for the up-and-down vibration of the screening equipment and plays a role in shock absorption and noise reduction.
In this embodiment, the amplitude adjustment device is composed of a bolt 102 and a bolt spring 105, the bolt 102 includes a screw rod and a nut, the screw rod is respectively connected with the upper laminated plate 103 and the lower laminated plate 107 in a sliding manner, and the nut is arranged at two ends of the screw rod and is used for preventing the upper laminated plate 103 and the lower laminated plate 107 from sliding out of two ends of the screw rod. The bolt spring 105 is sleeved on the outer side of the screw rod. The bolt spring 105 is positioned between the upper laminated plate 103 and the lower laminated plate 107, and the pressing degree of the bolt spring 105 can be changed by screwing a nut, so that the distance between the upper laminated plate 103 and the lower laminated plate 107 is changed, the stroke of the vibration spring 106 is changed, and the purpose of changing the amplitude of the screening equipment is achieved. Aiming at gravels with different types and different particle sizes, the processing capacity and the adaptability of the screening equipment can be improved by changing the amplitude of the screening equipment.
A guide shaft 104 is arranged inside the vibration spring 106, the upper end of the guide shaft 104 is fixedly connected with the upper mounting seat 101, a blind hole matched with the guide shaft 104 is arranged in the lower mounting seat 108, and the guide shaft 104 is slidably connected with the blind hole along the axial direction of the guide shaft. With the arrangement, the screening equipment can only vibrate in the vertical direction (namely in the axial direction of the guide shaft 104), the transverse movement of the screening equipment can be limited, the transverse instability of the screening equipment is prevented, and the stability of the screening equipment is improved.
The present invention further comprises a distance sensor having an emitting end and a receiving end respectively disposed on the upper and lower laminates 103 and 107, the distance sensor being connected to a display. In this embodiment, the distance sensor is an infrared distance sensor, the transmitting end emits infrared rays, the receiving end receives the infrared rays, the distance between the upper laminated plate 103 and the lower laminated plate 107 is calculated by measuring time intervals, and then the distance data is displayed on the display, so that the amplitude can be conveniently checked and adjusted by the worker.
The distance sensor is connected with a console, and the console is provided with an alarm device. As the screening device is constantly vibrating, the bolts 102 may loosen, resulting in a change in the distance between the upper and lower laminates 103, 107, resulting in an error in the actual amplitude from the set amplitude. The distance sensor transmits the amplitude information to the console, the console compares the amplitude data with the set amplitude data, and when the difference between the amplitude data and the set amplitude data exceeds a set range, the alarm device gives an alarm to remind a worker to go to process the amplitude information so as to ensure the stability of the amplitude of the screening equipment.
A material collecting disc 4 is arranged in the screening equipment box body 2, and the material collecting disc 4 is located below the screen 3.
The material collecting plate 4 has an inclined angle, and a first chute 6 is arranged on the lower side of the material collecting plate 4. The collecting tray vibrates along with the vibrating screening equipment box body, transports the undersize from the higher end to the lower end, and then collects through a first chute.
The screen 3 has an inclined angle and a second chute 7 is provided at the lower side of the screen 3. The screen is vibrated with the vibratory screening apparatus box and oversize material is transported from the upper side of the screen to the lower side by vibration and then collected by a second chute.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (9)
1. The utility model provides an adjustable screening equipment of amplitude for shield constructs construction dregs is handled which characterized in that: the vibrating screen comprises a screening equipment box body (2), wherein a screen (3), a spring assembly (1) and a vibrating device (5) are arranged in the vibrating screening equipment box body (2), and an amplitude adjusting device is arranged in the spring assembly (1).
2. The amplitude-adjustable screening device for shield construction muck treatment according to claim 1, wherein the spring assembly comprises an upper mounting seat (101) and a lower mounting seat (108), an upper laminated plate (103) and a lower laminated plate (107) are arranged between the upper mounting seat (101) and the lower mounting seat (108), a vibration spring (106) is arranged between the upper laminated plate (103) and the lower laminated plate (107), a connecting piece (109) is arranged at the upper end of the vibration spring (106), the connecting piece (109) is movably connected with the upper laminated plate (103), and the upper end of the connecting piece (109) is fixedly connected with the upper mounting seat (101).
3. The screening equipment with the adjustable amplitude for the shield construction muck treatment according to claim 2, wherein the amplitude adjusting device consists of a bolt (102) and a bolt spring (105), two ends of the bolt (102) are respectively connected with the upper laminated plate (103) and the lower laminated plate (107), and the bolt spring (105) is sleeved on the outer side of the bolt (102).
4. The amplitude-adjustable screening device for the shield construction muck disposal according to claim 2, wherein a guide shaft (104) is arranged inside the vibration spring (106), the upper end of the guide shaft (104) is fixedly connected with the upper mounting seat (101), and the guide shaft (104) is connected with the lower mounting seat (108) in a sliding manner along the axial direction of the guide shaft (104).
5. The amplitude-adjustable screening device for the shield construction muck treatment according to claim 2, further comprising a distance sensor, wherein a transmitting end and a receiving end of the distance sensor are respectively arranged on the upper laminated plate (103) and the lower laminated plate (107), and the distance sensor is connected with a display.
6. The adjustable amplitude screening device for shield construction muck treatment according to claim 5, wherein the distance sensor is connected with a console, and the console is provided with an alarm device.
7. The adjustable-amplitude screening device for the shield construction muck treatment according to claim 1, wherein a material collecting disc (4) is arranged in the screening device box body (2), and the material collecting disc (4) is positioned below the screen (3).
8. The amplitude-adjustable screening device for the shield construction muck disposal according to claim 7, wherein the aggregate tray (4) has an inclined angle, and a first chute (6) is arranged on the lower side of the aggregate tray (4).
9. The amplitude adjustable screening apparatus for shield construction muck treatment according to claim 1, wherein the screen (3) has an inclined angle and a second chute (7) is provided at a lower side of the screen (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010246182.6A CN111420873A (en) | 2020-03-31 | 2020-03-31 | Adjustable-amplitude screening equipment for shield construction muck treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010246182.6A CN111420873A (en) | 2020-03-31 | 2020-03-31 | Adjustable-amplitude screening equipment for shield construction muck treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111420873A true CN111420873A (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010246182.6A Pending CN111420873A (en) | 2020-03-31 | 2020-03-31 | Adjustable-amplitude screening equipment for shield construction muck treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111420873A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731800A (en) * | 2021-09-09 | 2021-12-03 | 合肥金果缘视觉科技有限公司 | High-efficiency longitudinal vibrating screen |
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| CN2116536U (en) * | 1992-03-26 | 1992-09-23 | 建设部长沙建筑机械研究所 | Amplitude-variable vibrating screen |
| CN1686637A (en) * | 2005-03-28 | 2005-10-26 | 姜虹 | Mould vibration device |
| CN101837345A (en) * | 2010-04-13 | 2010-09-22 | 郑州大学 | Device and method for automatically removing blocked materials in screen meshes of vibrating screen |
| JP4742067B2 (en) * | 2007-05-18 | 2011-08-10 | 株式会社キンキ | Vibrating deck and sieving device equipped with the same |
| CN103028539A (en) * | 2011-09-29 | 2013-04-10 | 范公奇 | Self-adaption amplitude adjustable inertia vibration device |
| CN204018663U (en) * | 2014-06-17 | 2014-12-17 | 宝钢工程技术集团有限公司 | Energy-saving high precision plates blank continuous casting crystallizer vibrating device |
| CN205341272U (en) * | 2015-12-31 | 2016-06-29 | 红塔烟草(集团)有限责任公司 | Laser displacement sensor shale shaker amplitude detection device |
| CN206168763U (en) * | 2016-08-05 | 2017-05-17 | 黄河科技学院 | Amplitude adjustable single -stage vibration screening device |
| CN208810532U (en) * | 2018-05-30 | 2019-05-03 | 唐山宏通玛钢有限公司 | Vibrating sand-screening device is used in a kind of preparation of steel |
-
2020
- 2020-03-31 CN CN202010246182.6A patent/CN111420873A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116536U (en) * | 1992-03-26 | 1992-09-23 | 建设部长沙建筑机械研究所 | Amplitude-variable vibrating screen |
| CN1686637A (en) * | 2005-03-28 | 2005-10-26 | 姜虹 | Mould vibration device |
| JP4742067B2 (en) * | 2007-05-18 | 2011-08-10 | 株式会社キンキ | Vibrating deck and sieving device equipped with the same |
| CN101837345A (en) * | 2010-04-13 | 2010-09-22 | 郑州大学 | Device and method for automatically removing blocked materials in screen meshes of vibrating screen |
| CN103028539A (en) * | 2011-09-29 | 2013-04-10 | 范公奇 | Self-adaption amplitude adjustable inertia vibration device |
| CN204018663U (en) * | 2014-06-17 | 2014-12-17 | 宝钢工程技术集团有限公司 | Energy-saving high precision plates blank continuous casting crystallizer vibrating device |
| CN205341272U (en) * | 2015-12-31 | 2016-06-29 | 红塔烟草(集团)有限责任公司 | Laser displacement sensor shale shaker amplitude detection device |
| CN206168763U (en) * | 2016-08-05 | 2017-05-17 | 黄河科技学院 | Amplitude adjustable single -stage vibration screening device |
| CN208810532U (en) * | 2018-05-30 | 2019-05-03 | 唐山宏通玛钢有限公司 | Vibrating sand-screening device is used in a kind of preparation of steel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731800A (en) * | 2021-09-09 | 2021-12-03 | 合肥金果缘视觉科技有限公司 | High-efficiency longitudinal vibrating screen |
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Application publication date: 20200717 |