GB500816A - Improvements in and relating to screening apparatus - Google Patents

Improvements in and relating to screening apparatus

Info

Publication number
GB500816A
GB500816A GB28449/37A GB2844937A GB500816A GB 500816 A GB500816 A GB 500816A GB 28449/37 A GB28449/37 A GB 28449/37A GB 2844937 A GB2844937 A GB 2844937A GB 500816 A GB500816 A GB 500816A
Authority
GB
United Kingdom
Prior art keywords
screens
screen
abutments
cams
interposed
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.)
Expired
Application number
GB28449/37A
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.)
WADDLE PATENT FAN AND ENGINEER
Original Assignee
WADDLE PATENT FAN AND ENGINEER
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 WADDLE PATENT FAN AND ENGINEER filed Critical WADDLE PATENT FAN AND ENGINEER
Priority to GB28449/37A priority Critical patent/GB500816A/en
Publication of GB500816A publication Critical patent/GB500816A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B2201/00Details applicable to machines for screening using sieves or gratings
    • B07B2201/04Multiple deck screening devices comprising one or more superimposed screens

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

500,816. Sifting-apparatus. WILLIS, T, and WADDLE PATENT FAN & ENGINEERING CO., Ltd. April 14, 1938, No. 28449/37. [Class 117] Screening-apparatus comprising one or more screens is characterized in that the screens are inclined and slidably reciprocate un horizontal guides, and means are provided for suddenly arresting the movement when the lower end of the screen is leading In the arrangement shown in Fig. 1, two sets of screens 5, 6 are inclined in opposite directions and are mounted in troughs supported by rollers 44 on horizontal guides. The screens 10, 11 in the upper trough are of graded mesh, the ovensize materials being delivered to shoots 13, 14 repectively. The member 9 acts as u haffle. The material passing through the screen11 is collected hy the base 8 and passes by way of the opening 18 and deflector 17 into the second trough which may contain one or more superposed screens 19 and a collecting plate 21 leading to suitable receptacles or conveyers. The driving arrangements for the screens consists of a shaft 24 carrying double-lobed cams 25 with radial steps 26 engaging lugs 27 carried by the screening troughs. Tension springs 29 adjustable as to tension and direction of pull, hold the abutments against the cam faces. Abutments 31, 32 on the screen frames engage adjustable fixed abutments 33, 34, to produce a shock when the spring tension is released by the rotation of the cams. The stop adjustment is provided by interposed wedges 35. In a modification, Fig. 2 (not shown), the rotary cams are replaced by endless chains carrying wedge-shaped members co-acting with abutments on the screens. The screen arrangement comprises three sets of screens, the upper two sets serving to screen out the larger sizes and deliver the fines to the lowest set which has a number of .superposed fine screens of graded mesh. The screens may be mounted on inclined links and actuated against gravity by the cams. An alternative construction is shown in Fig. 3, in which the movement of the screens is obtained by an eccentric 62 and connecting rod 61 made in two telescoping parts with an interposed cushioning spring. An abutment 64 on the screen is brought against a fixed stop 63 within the limits of the throw of the eccentric the excess movement of which is taken up by the interposed spring.
GB28449/37A 1938-04-14 1938-04-14 Improvements in and relating to screening apparatus Expired GB500816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB28449/37A GB500816A (en) 1938-04-14 1938-04-14 Improvements in and relating to screening apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28449/37A GB500816A (en) 1938-04-14 1938-04-14 Improvements in and relating to screening apparatus

Publications (1)

Publication Number Publication Date
GB500816A true GB500816A (en) 1939-02-16

Family

ID=10275795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28449/37A Expired GB500816A (en) 1938-04-14 1938-04-14 Improvements in and relating to screening apparatus

Country Status (1)

Country Link
GB (1) GB500816A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107282437A (en) * 2017-08-20 2017-10-24 李乐乐 A kind of double cam Automatic sieve rice device
CN110743784A (en) * 2019-09-11 2020-02-04 宁夏鸿辰有机农业开发有限公司 Conveniently get slow-release fertilizer batching fine screen device of material
CN114987315A (en) * 2022-08-04 2022-09-02 四川幼儿师范高等专科学校 Material conveying device for building engineering management
CN115228722A (en) * 2022-07-20 2022-10-25 定南九鼎牧业有限公司 A granule sieving mechanism for pig feed production
CN115385364A (en) * 2022-09-06 2022-11-25 优利德(江苏)化工有限公司 Preparation method and device of potassium carbonate
CN118122616A (en) * 2024-05-08 2024-06-04 济南泉麦酒业有限公司 Beer production processing raw materials screening plant

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107282437A (en) * 2017-08-20 2017-10-24 李乐乐 A kind of double cam Automatic sieve rice device
CN110743784A (en) * 2019-09-11 2020-02-04 宁夏鸿辰有机农业开发有限公司 Conveniently get slow-release fertilizer batching fine screen device of material
CN115228722A (en) * 2022-07-20 2022-10-25 定南九鼎牧业有限公司 A granule sieving mechanism for pig feed production
CN114987315A (en) * 2022-08-04 2022-09-02 四川幼儿师范高等专科学校 Material conveying device for building engineering management
CN114987315B (en) * 2022-08-04 2022-11-04 四川幼儿师范高等专科学校 Material conveying device for building engineering management
CN115385364A (en) * 2022-09-06 2022-11-25 优利德(江苏)化工有限公司 Preparation method and device of potassium carbonate
CN115385364B (en) * 2022-09-06 2023-11-10 优利德(江苏)化工有限公司 Preparation method and device of potassium carbonate
CN118122616A (en) * 2024-05-08 2024-06-04 济南泉麦酒业有限公司 Beer production processing raw materials screening plant

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