CN113713454A - Special energy-efficient drainage pumping station of hydraulic engineering - Google Patents

Special energy-efficient drainage pumping station of hydraulic engineering Download PDF

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Publication number
CN113713454A
CN113713454A CN202110936411.1A CN202110936411A CN113713454A CN 113713454 A CN113713454 A CN 113713454A CN 202110936411 A CN202110936411 A CN 202110936411A CN 113713454 A CN113713454 A CN 113713454A
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CN
China
Prior art keywords
water pipe
filter layer
hydraulic engineering
fixedly connected
rod
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
CN202110936411.1A
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Chinese (zh)
Inventor
林克慧
王舒浩
范浙朝
董合费
王生
汪志江
邱浩
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Wenzhou Oujiang Water Diversion Development Co ltd
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Wenzhou Oujiang Water Diversion Development 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.)
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Publication date
Application filed by Wenzhou Oujiang Water Diversion Development Co ltd filed Critical Wenzhou Oujiang Water Diversion Development Co ltd
Priority to CN202110936411.1A priority Critical patent/CN113713454A/en
Publication of CN113713454A publication Critical patent/CN113713454A/en
Pending legal-status Critical Current

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    • 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
    • B01D29/62Regenerating the filter material in the filter
    • B01D29/64Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B1/00Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

The invention discloses a special high-efficiency energy-saving flood drainage pump station for hydraulic engineering in the technical field of flood drainage equipment, which comprises a water pump and a water pipe, wherein the water pipe consists of a first water pipe branch and a second water pipe branch; the anti-blocking mechanism consists of an anti-blocking box and a filter layer, the filter layer is detachably arranged in the anti-blocking box, the left side of the filter layer is provided with a cleaning mechanism, the cleaning mechanism is connected with a driving mechanism used for driving the cleaning mechanism to reciprocate up and down, and the driving mechanism is connected with a cylinder used for providing a power source; during the use, the cylinder can drive straight board tooth side-to-side motion, and then drives cleaning roller reciprocating motion through the reciprocating lever for the cleaning roller clears up the filter layer, thereby can effectively prevent to produce and block up.

Description

Special energy-efficient drainage pumping station of hydraulic engineering
Technical Field
The invention relates to the technical field of waterlogging drainage equipment, in particular to a special efficient and energy-saving waterlogging drainage pump station for hydraulic engineering.
Background
When the existing drainage pump station drains water to the dam, a pressurizing device is required to be arranged on the inner side of the dam in order to compensate pressure difference generated by water lifting, and the water lifting capacity is increased by inputting electric energy and utilizing an increasing device, so that the drainage efficiency of the drainage pump station is ensured, the consumption of electric energy is increased, and when a drainage pump sucks water, silt stones in the water cannot be filtered, so that the viscosity of the water is increased, the lift of the drainage pump is reduced, and the energy consumption is increased; especially, in the drainage process, impurities can block the filter layer, so that water is difficult to flow out, and the drainage efficiency is reduced.
Disclosure of Invention
The invention aims to provide a special efficient and energy-saving drainage pumping station for hydraulic engineering, which aims to solve the problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a special high-efficiency energy-saving flood drainage pump station for hydraulic engineering comprises a water pump and a water pipe, wherein the water pipe consists of a first water pipe branch and a second water pipe branch, the water outlet end of the water pump is fixedly connected with the first water pipe branch, and an anti-blocking mechanism is fixedly connected between one end, far away from the water pump, of the first water pipe branch and the second water pipe branch; prevent stifled mechanism by preventing stifled case and filter layer and constitute, the filter layer detachable install in prevent stifled incasement portion, the filter layer left side is provided with clearance mechanism, be connected with in the clearance mechanism and be used for driving clearance mechanism carries out up-and-down motion's actuating mechanism, the last cylinder that is used for providing the power supply that is connected with of actuating mechanism.
In a further aspect: the cleaning mechanism is composed of a reciprocating rod and a cleaning roller, the reciprocating rod is movably arranged on the upper wall of the anti-blocking box in a penetrating mode, and the cleaning roller is connected to the lower end of the reciprocating rod and located on the left side of the filter layer; the upper end of the reciprocating rod is connected with a connecting piece, and the front side of the connecting piece is provided with a sliding shaft connected with the driving mechanism; the driving mechanism drives the connecting piece to move up and down through the sliding shaft, further drives the reciprocating rod to move up and down, and the reciprocating rod drives the cleaning roller to move up and down on the left side of the filter layer, so that impurities on the filter layer can be pushed to the lower end of the filter layer.
In a further aspect: the collection mechanism is arranged on the lower side of the anti-blocking box and consists of a collection box and a door body, the collection box is fixedly connected to the lower side of the anti-blocking box and communicated with the anti-blocking box, and the door body is arranged on one side of the collection box; the lower end of the filter layer is positioned at the center of the upper side of the collecting box; when the cleaning roller pushes down impurity, impurity can fall into the collection box and collect, if need clear up the impurity of collecting, only need open the door body after with impurity discharge can.
In a further aspect: the driving mechanism consists of a movable rod, a slide way and a fixed plate, the fixed plate is fixedly arranged on the upper side of the anti-blocking box, the lower end of the movable rod is hinged with the upper end of the fixed plate, the slide way is arranged on the movable rod, and the slide shaft is arranged in the slide way in a sliding manner; the movable rod and the hinged shaft of the fixed plate are movably arranged in a penetrating mode, the fixed plate extends to the rear side of the fixed plate, and the rear end of the hinged shaft is connected with a balance mechanism.
In a further aspect: the balance mechanism comprises a gear and straight plate teeth, the gear is fixedly connected to the rear end of the hinge shaft, the straight plate teeth are positioned on the upper side of the gear and are meshed with the gear, and the right sides of the straight plate teeth are fixedly connected with the movable end of the cylinder; can drive straight board tooth side-to-side motion when the cylinder starts, straight board tooth drives gear reciprocating rotation, and the gear drives the articulated shaft reciprocating rotation, and the articulated shaft drives the reciprocating motion of movable rod for the movable rod drives the slide bar through the slide and moves thereupon, and then makes the slide bar drive reciprocating rod up-and-down motion through the connecting piece, and the reciprocating rod drives cleaning roller reciprocating motion, makes the cleaning roller clear up the filter layer, thereby collects in the impurity propelling movement on the filter layer to the collection box.
In a further aspect: the upper side of the straight plate tooth is fixedly connected with a connecting rod, the upper end of the connecting rod is fixedly connected with a sliding sleeve, the front side of the supporting plate is fixedly provided with two side plates, a sliding rod is fixedly connected between the two side plates, and the two sliding sleeves are respectively sleeved on the sliding sleeves in a sliding manner; when the straight plate teeth do left-right reciprocating motion, the sliding sleeves can be driven by the connecting rods to slide on the sliding rods, and therefore the balance mechanism is more stable in the whole operation process.
In a further aspect: the surface of the cleaning roller is coated with the anticorrosive coating, so that the surface layer can be prevented from being damaged due to long-time operation in water.
In a further aspect: the joint of the first water pipe branch and the water pump is provided with a sealing ring for preventing leakage.
Compared with the prior art, the invention has the following beneficial effects:
1. when the balance mechanism is used for draining water, the air cylinder can drive the straight plate teeth to move left and right, and when the straight plate teeth reciprocate left and right, the sliding sleeve can be driven by the connecting rod to slide on the sliding rod, so that the whole balance mechanism is more stable in the operation process; the straight board tooth drives the gear reciprocating rotation, and the gear drives the articulated shaft reciprocating rotation, and the articulated shaft drives the reciprocating motion of movable rod for the movable rod drives the slide bar through the slide and moves thereupon, and then makes the slide bar pass through the connecting piece and drive reciprocating rod up-and-down motion, and the reciprocating rod drives cleaning roller reciprocating motion, makes cleaning roller clear up the filter layer, thereby can effectively prevent to produce and block up.
2. The impurity of collecting is cleared up at needs, only need with the door body open the back with impurity discharge can, labour saving and time saving, convenient and fast has very strong practicality.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partial structural sectional view of the present invention.
Fig. 3 is an enlarged schematic view of a part of the structure in fig. 2.
Fig. 4 is an enlarged structural diagram of a in fig. 3.
Fig. 5 is a schematic structural view of the straight plate tooth in fig. 4.
Notations for reference numerals: 1. a water pump; 2. a water pipe; 21. a first water pipe branch; 22. a second water pipe branch; 3. an anti-blocking mechanism; 31. the anti-blocking box; 32. a filter layer; 4. a collection mechanism; 41. a collection box; 42. a door body; 5. a support plate; 6. a cleaning mechanism; 61. a reciprocating lever; 62. a cleaning roller; 63. a connecting member; 64. a slide shaft; 64. a slide shaft; 7. a drive mechanism; 7. a cylinder; 8. a drive mechanism; 81. a movable rod; 82. a slideway; 83. a fixing plate; 9. a balancing mechanism; 91. a gear; 92. straight plate teeth; 93. a connecting rod; 94. a sliding sleeve; 95. a slide bar; 96. side plates.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the several views, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
Referring to fig. 1 to 5, in the embodiment of the invention, the special efficient and energy-saving flood drainage pump station for hydraulic engineering comprises a water pump 1 and a water pipe 2, wherein the water pipe 2 is composed of a first water pipe branch 21 and a second water pipe branch 22, a water outlet end of the water pump 1 is fixedly connected with the first water pipe branch 21, and an anti-blocking mechanism 3 is fixedly connected between one end of the first water pipe branch 21, which is far away from the water pump 1, and the second water pipe branch 22; prevent stifled mechanism 3 by preventing stifled case 31 and filter layer 32 and constitute, filter layer 32 detachable install in prevent stifled incasement 31 is inside, filter layer 32 left side is provided with clearance mechanism 6, be connected with on the clearance mechanism 6 and be used for driving clearance mechanism 6 carries out up-and-down motion's actuating mechanism 8, be connected with the cylinder 7 that is used for providing the power supply on the actuating mechanism 8.
Further, the cleaning mechanism 6 is composed of a reciprocating rod 61 and a cleaning roller 62, the reciprocating rod 61 is movably arranged on the upper wall of the anti-blocking box 31 in a penetrating manner, and the cleaning roller 62 is connected to the lower end of the reciprocating rod 61 and is positioned on the left side of the filter layer 32; the upper end of the reciprocating rod 61 is connected with a connecting piece 63, and the front side of the connecting piece 63 is provided with a sliding shaft 64 connected with the driving mechanism 8; the driving mechanism 8 drives the connecting member 63 to move up and down through the sliding shaft 64, and further drives the reciprocating rod 61 to move up and down, and the reciprocating rod 61 drives the cleaning roller 62 to move up and down on the left side of the filter layer 32, so that impurities on the filter layer 32 can be pushed to the lower end of the filter layer 32.
In order to collect impurities conveniently, the collecting mechanism 4 is installed on the lower side of the anti-blocking box 31, the collecting mechanism 4 is composed of a collecting box 41 and a door body 42, the collecting box 41 is fixedly connected to the lower side of the anti-blocking box 31 and communicated with the anti-blocking box 31, and the door body 42 is installed on one side of the collecting box 41; the lower end of the filter layer 32 is positioned at the center of the upper side of the collecting box 41; when the cleaning roller 62 pushes down the impurities, the impurities fall into the collection box 41 to be collected, and if the collected impurities need to be cleaned, the impurities are discharged only after the door body 42 is opened.
Further, the driving mechanism 8 is composed of a movable rod 81, a slide 82 and a fixed plate 83, the fixed plate 83 is fixedly installed on the upper side of the anti-blocking box 31, the lower end of the movable rod 81 is hinged to the upper end of the fixed plate 83, the slide 82 is opened on the movable rod 81, and the sliding shaft 64 is slidably installed in the slide 82; the movable rod 81 and the hinge shaft of the fixed plate 83 penetrate through the fixed plate 83 and extend to the rear side of the fixed plate 83, and the rear end of the hinge shaft is connected with a balance mechanism 9.
In order to make the action effect of the balance mechanism 9 better, the balance mechanism 9 includes a gear 91 and a straight plate tooth 92, the gear 91 is fixedly connected to the rear end of the hinge shaft, the straight plate tooth 92 is located on the upper side of the gear 91 and is meshed with the gear 91, and the right side of the straight plate tooth 92 is fixedly connected with the movable end of the cylinder 7; can drive straight board tooth 92 side-to-side motion when cylinder 7 starts, straight board tooth 92 drives gear 91 reciprocating rotation, gear 91 drives the articulated shaft reciprocating rotation, the articulated shaft drives movable rod 81 reciprocating swing, make movable rod 81 drive the smooth axle 64 through slide 82 and move thereupon, and then make smooth axle 64 drive reciprocating rod 61 up-and-down motion through connecting piece 63, reciprocating rod 61 drives cleaning roller 62 reciprocating motion, make cleaning roller 62 clear up filter layer 32, thereby collect in pushing away the impurity on the filter layer 32 to collecting box 41.
Further, a connecting rod 93 is fixedly connected to the upper side of the straight plate tooth 92, a sliding sleeve 94 is fixedly connected to the upper end of the connecting rod 93, two side plates 96 are fixedly mounted on the front side of the supporting plate 5, a sliding rod 95 is fixedly connected between the two side plates 96, and the two sliding sleeves 94 are respectively slidably sleeved on the sliding sleeve 94; when the straight plate teeth 92 reciprocate left and right, the sliding sleeve 94 is driven by the connecting rod 93 to slide on the sliding rod 95, so that the balance mechanism 9 is more stable in the operation process.
In order to prolong the service life of the cleaning roller 62, the surface of the cleaning roller 62 is coated with an anticorrosive layer, so that the surface layer can be prevented from being damaged due to long-time operation in water.
Further, a sealing ring is arranged at the joint of the first water pipe branch 21 and the water pump 1 to prevent leakage.
The working principle of the invention is as follows:
when the water draining device is used for draining water, firstly, the air cylinder 7 is started, then the air cylinder 7 can drive the straight plate tooth 92 to move left and right, and when the straight plate tooth 92 reciprocates left and right, the connecting rod 93 can drive the sliding sleeve 94 to slide on the sliding rod 95, so that the whole balancing mechanism 9 is more stable in the operation process; the straight plate teeth 92 drive the gear 91 to rotate in a reciprocating manner, the gear 91 drives the hinge shaft to rotate in a reciprocating manner, the hinge shaft drives the movable rod 81 to swing in a reciprocating manner, so that the movable rod 81 drives the sliding shaft 64 to move along with the sliding shaft through the slide rail 82, the sliding shaft 64 drives the reciprocating rod 61 to move up and down through the connecting piece 63, the reciprocating rod 61 drives the cleaning roller 62 to move in a reciprocating manner, the cleaning roller 62 cleans the filter layer 32, and therefore impurities on the filter layer 32 are pushed into the collection box 41 to be collected; if need clear up the impurity of collecting, only need open the door body 42 the back with impurity discharge can, labour saving and time saving, convenient and fast has very strong practicality.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced 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 (8)

1. A special high-efficiency energy-saving flood drainage pump station for hydraulic engineering comprises a water pump (1) and a water pipe (2), and is characterized in that the water pipe (2) consists of a first water pipe branch (21) and a second water pipe branch (22), the water outlet end of the water pump (1) is fixedly connected with the first water pipe branch (21), and an anti-blocking mechanism (3) is fixedly connected between one end, far away from the water pump (1), of the first water pipe branch (21) and the second water pipe branch (22); prevent stifled mechanism (3) by preventing stifled case (31) and filter layer (32) and constitute, filter layer (32) detachable install in prevent stifled case (31) inside, filter layer (32) left side is provided with clearance mechanism (6), be connected with on clearance mechanism (6) and be used for driving clearance mechanism (6) carry out up-and-down motion's actuating mechanism (8), be connected with cylinder (7) that are used for providing the power supply on actuating mechanism (8), prevent stifled case (31) upside fixed mounting have backup pad (5), cylinder (7) fixed mounting is in backup pad (5) front side.
2. The efficient energy-saving drainage pumping station special for the hydraulic engineering according to claim 1, wherein the cleaning mechanism (6) is composed of a reciprocating rod (61) and a cleaning roller (62), the reciprocating rod (61) is movably arranged on the upper wall of the anti-blocking box (31) in a penetrating manner, and the cleaning roller (62) is connected to the lower end of the reciprocating rod (61) and is positioned on the left side of the filter layer (32); the upper end of the reciprocating rod (61) is connected with a connecting piece (63), and a sliding shaft (64) used for being connected with the driving mechanism (8) is installed on the front side of the connecting piece (63).
3. The efficient energy-saving flood drainage pump station special for the hydraulic engineering according to claim 2, wherein a collection mechanism (4) is installed on the lower side of the anti-blocking box (31), the collection mechanism (4) is composed of a collection box (41) and a door body (42), the collection box (41) is fixedly connected to the lower side of the anti-blocking box (31) and communicated with the anti-blocking box (31), and the door body (42) is installed on one side of the collection box (41); the lower end of the filter layer (32) is positioned at the center of the upper side of the collecting box (41).
4. The efficient energy-saving flood drainage pump station special for the hydraulic engineering according to claim 2, wherein the driving mechanism (8) is composed of a movable rod (81), a slide way (82) and a fixed plate (83), the fixed plate (83) is fixedly installed on the upper side of the anti-blocking box (31), the lower end of the movable rod (81) is hinged to the upper end of the fixed plate (83), the slide way (82) is arranged on the movable rod (81), and the sliding shaft (64) is arranged in the slide way (82) in a sliding manner; the movable rod (81) and the hinged shaft of the fixed plate (83) penetrate through the fixed plate (83) to extend to the rear side of the fixed plate (83), and the rear end of the hinged shaft is connected with a balance mechanism (9).
5. The special high-efficiency energy-saving flood drainage pump station for the hydraulic engineering according to claim 4, wherein the balance mechanism (9) comprises a gear (91) and straight plate teeth (92), the gear (91) is fixedly connected to the rear end of the hinged shaft, the straight plate teeth (92) are located on the upper side of the gear (91) and are meshed with the gear (91), and the right side of the straight plate teeth (92) is fixedly connected with the movable end of the cylinder (7).
6. The special high-efficiency energy-saving flood drainage pump station for the hydraulic engineering according to claim 5, wherein a connecting rod (93) is fixedly connected to the upper side of the straight plate tooth (92), a sliding sleeve (94) is fixedly connected to the upper end of the connecting rod (93), two side plates (96) are fixedly mounted on the front side of the supporting plate (5), a sliding rod (95) is fixedly connected between the two side plates (96), and the two sliding sleeves (94) are respectively slidably sleeved on the sliding sleeves (94).
7. The special high-efficiency energy-saving flood drainage pump station for the hydraulic engineering according to claim 2, wherein an anticorrosive layer is coated on the surface of the cleaning roller (62).
8. The special efficient and energy-saving flood drainage pump station for the hydraulic engineering according to claim 1, wherein a sealing ring is arranged at the joint of the first water pipe branch (21) and the water pump (1).
CN202110936411.1A 2021-08-16 2021-08-16 Special energy-efficient drainage pumping station of hydraulic engineering Pending CN113713454A (en)

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CN202110936411.1A CN113713454A (en) 2021-08-16 2021-08-16 Special energy-efficient drainage pumping station of hydraulic engineering

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Application Number Priority Date Filing Date Title
CN202110936411.1A CN113713454A (en) 2021-08-16 2021-08-16 Special energy-efficient drainage pumping station of hydraulic engineering

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Publication Number Publication Date
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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140021126A1 (en) * 2012-07-18 2014-01-23 Dan Lin Reversible backwashing self-cleaning filter
CN209254285U (en) * 2018-11-21 2019-08-16 浙江绍肖印染有限公司 A kind of water circulation system of hot water setting machine
CN110774732A (en) * 2019-11-04 2020-02-11 牛瑞肖 Printing device for light guide plate
CN210434059U (en) * 2019-04-20 2020-05-01 上海百辰环保科技有限公司 High-efficient rainwater purifies collection device
CN210993257U (en) * 2019-10-23 2020-07-14 湖北省协诚交通环保有限公司 Concrete processing wastewater recovery device
CN111438114A (en) * 2020-04-24 2020-07-24 湖北师范大学 Cleaning and draining system for machining of mechanical parts
US20210060464A1 (en) * 2019-08-26 2021-03-04 Zhijun Wang Water floating object treatment device for sewage treatment
CN112588676A (en) * 2020-12-07 2021-04-02 宜辰光电科技(安徽)有限公司 CNC (computer numerical control) machining equipment for mobile phone battery cover plate and working method of CNC machining equipment
CN213784550U (en) * 2020-11-11 2021-07-27 叶玉梅 Pumping device of irrigation and water conservancy irrigation pump station

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140021126A1 (en) * 2012-07-18 2014-01-23 Dan Lin Reversible backwashing self-cleaning filter
CN209254285U (en) * 2018-11-21 2019-08-16 浙江绍肖印染有限公司 A kind of water circulation system of hot water setting machine
CN210434059U (en) * 2019-04-20 2020-05-01 上海百辰环保科技有限公司 High-efficient rainwater purifies collection device
US20210060464A1 (en) * 2019-08-26 2021-03-04 Zhijun Wang Water floating object treatment device for sewage treatment
CN210993257U (en) * 2019-10-23 2020-07-14 湖北省协诚交通环保有限公司 Concrete processing wastewater recovery device
CN110774732A (en) * 2019-11-04 2020-02-11 牛瑞肖 Printing device for light guide plate
CN111438114A (en) * 2020-04-24 2020-07-24 湖北师范大学 Cleaning and draining system for machining of mechanical parts
CN213784550U (en) * 2020-11-11 2021-07-27 叶玉梅 Pumping device of irrigation and water conservancy irrigation pump station
CN112588676A (en) * 2020-12-07 2021-04-02 宜辰光电科技(安徽)有限公司 CNC (computer numerical control) machining equipment for mobile phone battery cover plate and working method of CNC machining equipment

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Application publication date: 20211130