FR2980981A1 - Sieve for perfect separation of powder particles or liquids in industry, has evacuation chute integrated into support frame of sieve for evacuation of particles whose size is greater than vacuum mesh - Google Patents

Sieve for perfect separation of powder particles or liquids in industry, has evacuation chute integrated into support frame of sieve for evacuation of particles whose size is greater than vacuum mesh Download PDF

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Publication number
FR2980981A1
FR2980981A1 FR1102319A FR1102319A FR2980981A1 FR 2980981 A1 FR2980981 A1 FR 2980981A1 FR 1102319 A FR1102319 A FR 1102319A FR 1102319 A FR1102319 A FR 1102319A FR 2980981 A1 FR2980981 A1 FR 2980981A1
Authority
FR
France
Prior art keywords
sieve
chute
evacuation
particles
frame
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
FR1102319A
Other languages
French (fr)
Inventor
Francois Vulcain
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.)
Sodeva TDS SARL
Original Assignee
Sodeva TDS SARL
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 Sodeva TDS SARL filed Critical Sodeva TDS SARL
Priority to FR1102319A priority Critical patent/FR2980981A1/en
Publication of FR2980981A1 publication Critical patent/FR2980981A1/en
Pending legal-status Critical Current

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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
    • B07B1/06Cone or disc shaped 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/38Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens oscillating in a circular arc in their own plane; Plansifters
    • 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
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens

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  • Combined Means For Separation Of Solids (AREA)

Abstract

The sieve (A) has a frame (D) and an evacuation chute (B) integrated into a support frame (C) of the sieve for evacuation of particles whose size is greater than a vacuum mesh, where the sieve acts as a single part with surface continuity, without any seal between the frame and the evacuation chute. An ultrasound excitation system is mounted on the sieve, where the continuous surface between the chute and the frame allows flow of particles without retention zone or loss.

Description

Tamis de séparation de pulvérulents ou liquides chargés Domaine technique de l'invention: La présente invention concerne un tamis utilisé dans les tamiseurs industriels. La nouvelle conception du châssis de maintien de la toile de tamisage se propose de résoudre un problème d'étanchéité, et par la même, la suppression d'une zone de rétension entre la goulotte de sortie des tamiseurs et le châssis du tamis en lui-même. 10 Les produits pulvérulents ou éventuellement liquides ont communément besoin d'être calibrés en une granulométrie précise. A cet effet, ils sont tamisés dans des tamiseurs composés d'une toile tendue sur un châssis inséré dans le corps du tamiseur. Le passage des particules fines dont la granulométrie est inférieure au vide de maille est facilité par la mise en vibration du châssis et dans certains cas de la toile en elle-même. Ainsi la toile 15 laisse passer les particules dites fines et les sépare des particules dont la granulométrie ne permet pas le passage à travers la toile. Etat de la technique antérieure : 20 Dans un tamiseur, les particules dont la granulométrie est supérieure au vide de maille sont retenues par la toile et doivent êtres évacuées. L'évacuation est communément réalisée par une goulotte rapportée sur la virole extérieure du corps du tamiseur. Il en résulte une rupture de surface entre la toile tendue sur son châssis et la goulotte elle-même partie intégrante du corps du tamiseur. Le tamis devant être démontable facilement 25 pour être nettoyé et entretenu, un jeu minimum est nécessaire entre le châssis de la toile et le corps du tamiseur. Ce jeu devenant une zone de rétension mais aussi une zone de faiblesse vis-à-vis de l'étanchéité. Etanchéité elle-même très importante car devant garantir une séparation parfaite entre les particules fines et les particules plus grosses. De même une différence de niveau peut apparaitre entre la toile et la goulotte ne permettant 30 pas un passage aisé des poudres retenues par la toile et une éventuelle rétension de particules particulièrement pénalisante lors de la vidange du tamis. Résumé de l'invention : 35 Le premier problème que se propose de résoudre l'invention est de permettre une évacuation complète des particules retenues par la toile d'un tamis. Un deuxième problème est de faciliter l'étanchéité entre la partie supérieure du tamis et la partie inférieure. 40 Un troisième problème posé est de permettre un démontage aisé du tamis. Description des dessins : 45 L'invention sera bien comprise et ses divers avantages et différentes caractéristiques ressortiront mieux lors de la description suivante, de l'exemple non limitatif de réalisation, en référence aux dessins schématiques annexés dans lesquels : -la figure 1 a représente une vue 3D du tamis et de sa goulotte intégrée. -la figure 1 b représente une vue 3D du tamis intégré dans le tamiseur. FIELD OF THE INVENTION The present invention relates to a sieve used in industrial sieves. The new design of the holding frame of the sieving screen proposes to solve a sealing problem, and by the same token, the suppression of a retaining zone between the sieve outlet chute and the sieve frame in itself. even. Pulverulent or possibly liquid products commonly need to be calibrated to a precise particle size. For this purpose, they are screened in sieves composed of a canvas stretched on a frame inserted in the body of the sifter. The passage of fine particles whose particle size is less than the mesh vacuum is facilitated by the vibration of the frame and in some cases the fabric itself. Thus the fabric 15 passes the so-called fine particles and separates particles whose particle size does not allow passage through the fabric. STATE OF THE PRIOR ART In a sieve, the particles whose particle size is greater than the mesh vacuum are retained by the fabric and must be evacuated. The evacuation is commonly performed by a chute attached to the outer shell of the body of the sifter. This results in a surface break between the canvas stretched on its frame and the chute itself integral part of the body of the sifter. Since the sieve must be easily removable for cleaning and maintenance, a minimum clearance is required between the sash frame and the sifter body. This game becomes a zone of retension but also a zone of weakness vis-à-vis the sealing. Sealing itself very important because to ensure a perfect separation between fine particles and larger particles. Similarly a difference in level can appear between the fabric and the chute not allowing easy passage of the powders retained by the fabric and possible particulate retension particularly penalizing during the emptying of the sieve. SUMMARY OF THE INVENTION The first problem to be solved by the invention is to allow complete evacuation of the particles retained by the screen cloth. A second problem is to facilitate the seal between the upper part of the sieve and the lower part. A third problem is to allow easy disassembly of the sieve. DESCRIPTION OF THE DRAWINGS The invention will be better understood and its various advantages and different characteristics will become more apparent in the following description, of the nonlimiting example of embodiment, with reference to the appended diagrammatic drawings in which: FIG. a 3D view of the screen and its integrated chute. FIG 1b shows a 3D view of the sieve integrated in the sifter.

Description détaillée : Tamis, utilisé notamment pour assurer une séparation parfaite des particules de poudres ou de liquides chargés et caractérisé en ce que les particules dont la taille est supérieure au vide de maille du tamis(A) sont évacuées par une goulotte (B) intégrée au châssis support du tamis (C). Le châssis lui-même étant composé d'une partie permettant la solidarisation de la toile et d'une goulotte intégrée dans ce même châssis. Châssis et goulotte faisant ainsi office de pièce unique. La goulotte présente une ouverture dans la surface du châssis (D). La goulotte intégrée permet une continuité de surface entre le tamis et la goulotte assurant un écoulement des particules sans zone de rétension et sans perte. Le châssis restant sur sa périphérie composé d'une surface continue, ici circulaire mais non exclusivement circulaire. L'étanchéité périphérique assurée par un joint (G) situé entre le tamis (A) et le corps vibrant (E) du tamiseur devient continue et est ainsi grandement facilitée. L'ensemble permettant de fait la suppression de l'étanchéité rapportée entre le châssis du tamis et la goulotte d'évacuation. Le type de construction reste compatible avec l'adjonction d'un système d'excitation par ultrasons directement monté sur le tamis. Detailed description: Screen, used in particular to ensure perfect separation of powder particles or charged liquids and characterized in that the particles whose size is greater than the mesh vacuum of the screen (A) are discharged through a chute (B) integrated to the sieve support frame (C). The frame itself is composed of a part allowing the joining of the fabric and a chute integrated in the same chassis. Chassis and chute acting as a single piece. The chute has an opening in the chassis surface (D). The integrated chute allows a surface continuity between the screen and the chute ensuring a flow of particles without retaining zone and without loss. The chassis remaining on its periphery consists of a continuous surface, here circular but not exclusively circular. The peripheral seal provided by a seal (G) located between the screen (A) and the vibrating body (E) of the screen becomes continuous and is thus greatly facilitated. The assembly allowing for the suppression of the reported sealing between the frame of the sieve and the discharge chute. The type of construction remains compatible with the addition of an ultrasonic excitation system directly mounted on the screen.

Le tamis ici décrit reste aisément démontable du corps du tamiseur afin de faciliter les opérations de lavage et de maintenance. La présente innovation n'est pas limitée au mode de réalisation décrit et illustré, de 25 nombreuses modifications peuvent êtres réalisées sans pour autant sortir du cadre défini par la portée du jeu de revendications. D'autres formes de châssis de tamis peuvent êtres prévus. De même que d'autres formes de goulottes. 30 35 40 45 The sieve described here remains easily removable from the body of the sifter to facilitate washing and maintenance operations. The present invention is not limited to the embodiment described and illustrated, many modifications can be made without departing from the scope defined by the scope of the set of claims. Other forms of sieve frames may be provided. As well as other forms of chutes. 30 35 40 45

Claims (5)

REVENDICATIONS: 1) Tamis, utilisé notamment pour assurer une séparation parfaite des particules de poudres ou de liquides chargés et caractérisé en ce qu'il comporte un châssis et une goulotte intégrée à ce même châssis support du tamis, permettant l'évacuation des particules dont la taille est supérieure au vide de maille, faisant ainsi office de pièce unique avec une continuité de surface supprimant de fait toute étanchéité rapportée entre le châssis du tamis et la goulotte d'évacuation. 1) Sieving, used in particular to ensure perfect separation of particles of powders or liquids and characterized in that it comprises a frame and a chute integrated to the same sieve support frame, allowing the evacuation of particles of which the size is greater than the mesh gap, thus acting as a single piece with a surface continuity eliminating any sealing reported between the sieve frame and the discharge chute. 2) Tamis châssis goulotte selon la revendication 1, caractérisée en ce que l'ensemble châssis et goulotte d'évacuation sont monobloc formant une continuité de surface entre le tamis et la goulotte et assurant un écoulement des particules sans zone de rétention et sans perte. 2) Chute chassis screen according to claim 1, characterized in that the frame assembly and discharge chute are monobloc forming a surface continuity between the screen and the chute and ensuring a flow of particles without retention area and lossless. 3) Tamis châssis goulotte selon la revendication 1, caractérisée en ce que la surface d'étanchéité avec le corps du tamiseur devient totalement périphérique et plane et en est ainsi grandement facilitée. 20 3) Chute chassis screen according to claim 1, characterized in that the sealing surface with the body of the sieve becomes completely peripheral and flat and is thus greatly facilitated. 20 4) Tamis selon la revendication 1, caractérisé en ce qu'un système d'excitation par ultrasons est monté sur le tamis. 4) Screen according to claim 1, characterized in that an ultrasonic excitation system is mounted on the screen. 5) Tamis châssis goulotte selon la revendication 1, caractérisé en ce qu'il est formé d'une pièce aisément démontable du corps du tamiseur afin de faciliter 25 les opérations de lavage et de maintenance. Déposant : SODEVA, 30 35 40 45 10 15 50 5) Chute frame sieve according to claim 1, characterized in that it is formed of an easily removable part of the body of the sifter to facilitate the washing and maintenance operations. Applicant: SODEVA, 30 35 40 45 10 15 50
FR1102319A 2011-10-06 2011-10-06 Sieve for perfect separation of powder particles or liquids in industry, has evacuation chute integrated into support frame of sieve for evacuation of particles whose size is greater than vacuum mesh Pending FR2980981A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1102319A FR2980981A1 (en) 2011-10-06 2011-10-06 Sieve for perfect separation of powder particles or liquids in industry, has evacuation chute integrated into support frame of sieve for evacuation of particles whose size is greater than vacuum mesh

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1102319A FR2980981A1 (en) 2011-10-06 2011-10-06 Sieve for perfect separation of powder particles or liquids in industry, has evacuation chute integrated into support frame of sieve for evacuation of particles whose size is greater than vacuum mesh

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FR2980981A1 true FR2980981A1 (en) 2013-04-12

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0419033A1 (en) * 1989-09-19 1991-03-27 William Boulton Vibro Energy Limited Improvements relating to vibratory sifters
JP2004351385A (en) * 2003-05-30 2004-12-16 Furukawa Co Ltd Pellet sorting device
CN201644379U (en) * 2009-06-18 2010-11-24 深圳市福英达工业技术有限公司 Vibrating screen classifier used for metal and non-metal powder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0419033A1 (en) * 1989-09-19 1991-03-27 William Boulton Vibro Energy Limited Improvements relating to vibratory sifters
JP2004351385A (en) * 2003-05-30 2004-12-16 Furukawa Co Ltd Pellet sorting device
CN201644379U (en) * 2009-06-18 2010-11-24 深圳市福英达工业技术有限公司 Vibrating screen classifier used for metal and non-metal powder

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