DK178426B1

DK178426B1 - Mixer

Info

Publication number: DK178426B1
Application number: DK201300378A
Authority: DK
Inventors: Tommy Bredal
Original assignee: Staring Maskinfabrik As
Priority date: 2013-06-19
Filing date: 2013-06-19
Publication date: 2016-02-22
Also published as: DK201300378A1

Abstract

Blandemaskine omfattende mindst én beholder, der er indrettet med en anordning for blanding af råmaterialer, støbemix, præfabrikerede materialer m.m. til et færdigt produkt, hvor beholderen har en åbning til at modtage råmaterialer, og en åbning til at lede det færdige produkt ud af tvangsblanderens beholder, hvor tvangsblanderen på mindst en af åbningerne er forsynet med en sikkerhedssluse, der hindrer at personer kan komme i berøring med tvangsblanderens bevægelige dele.Mixing machine comprising at least one container arranged with a device for mixing raw materials, molding mix, prefabricated materials and more. for a finished product in which the container has an opening for receiving raw materials and an opening for guiding the finished product out of the container of the forced mixer, where the forced mixer is provided with at least one of the openings a safety lock preventing persons from coming into contact with the moving parts of the forced mixer.

Description

Blandemaskine .Mixer.

Nærværende opfindelse angår en sikkerhedsanordning for en blandemaskine. Opfindelsen angår endvidere en blandemaskine, som eksempelvis en tvangsblander, en gennemstrømsblander, en modstrømsblander m.fl. med sikkerhedsanordningen monteret. Opfindelsen angår endvidere en metode for eftermontering af en sikkerhedsanordning ifølge opfindelsen på en blandemaskine.The present invention relates to a safety device for a mixing machine. The invention further relates to a mixing machine, such as a forced mixer, a flow mixer, a counter flow mixer and the like. with the safety device fitted. The invention further relates to a method for retrofitting a safety device according to the invention to a mixing machine.

Blandemaskiner er kendetegnet ved at omfatte en beholder, der er indrettet med en anordning for tvangsblanding af råmaterialer til et færdigt produkt, hvor beholderen har en åbning til at modtage råmaterialer, og en åbning til at lede det færdige produkt ud af tvangsblanderens beholder.Mixing machines are characterized by comprising a container provided with a device for forcibly mixing raw materials into a finished product, the container having an opening for receiving raw materials, and an opening for guiding the finished product out of the composite mixer container.

For forklaring af opfindelsen, uden at dette på nogen måde skal opfattes begrænsende for ansøgningens beskyttelsesområde, er, som et eksempel, anvendt tvangsblandere til fremstilling af beton og byggemørtel. Beton og mørtel fremstilles af faste råmaterialer, som sand, grus, cement, vand m.m. og blandes til en passende konsistens i tvangsblanderen. Blandemaskiner, herunder tvangsblandere og andre typer af blandere, anvendes endvidere i industrien til et utal af formål, eksempelvis i fremstillingen af fødevarer og medicin. Blandere anvendes også i den kemiske industri eksempelvis i fremstillingen af maling.For an explanation of the invention, without limiting this in any way to the scope of application of the application, as an example, forced mixers are used for the manufacture of concrete and building mortar. Concrete and mortar are made from solid raw materials, such as sand, gravel, cement, water and more. and mix to an appropriate consistency in the compulsive mixer. Mixers, including forced mixers and other types of mixers, are also used in the industry for a variety of purposes, for example in the manufacture of food and medicine. Mixers are also used in the chemical industry, for example in the manufacture of paints.

Tvangsblandere til fremstilling af beton og byggemørtel findes i flere varianter og størrelser. Således kan en tvangsblander være et stationært anlæg, indrettet til at behandle store mængder af råmaterialer i fremstillingen af beton eller mørtel. Yderligere findes også mobile anlæg, der muliggør en praktisk og behovstyret fremstilling af beton eller mørtel direkte på byggepladsen. For et eksempel på et sådant mobilt anlæg i form af en tvangsblander henvises i øvrigt til DK 2006 00321 U3, Staring Maskinfabrik A/S.Forced mixers for making concrete and building mortar are available in several variants and sizes. Thus, a composite mixer may be a stationary plant adapted to process large quantities of raw materials in the manufacture of concrete or mortar. In addition, there are also mobile plants that enable the practical and demand-controlled production of concrete or mortar directly on the construction site. For an example of such a mobile plant in the form of a compulsory mixer, please refer to DK 2006 00321 U3, Staring Maskinfabrik A / S.

Håndtering af råmaterialer, og det færdige produkt er hårdt fysisk arbejde, der er belastende for det personale, der betjener tvangsblanderen, og udfører byggeriet. Derfor ændres reglerne for arbejdsmiljø på byggepladser sig løbende hen imod, at det manuelle arbejde skal overtages af maskiner. Eksempelvis benyttes transportbånd, ophejskasser o.lign. til at løfte råmaterialerne ind i tvangsblanderen, så håndteringen af råmaterialer med håndskovle aflastes. På samme måde modtages det færdige produkt i baljer, dog oftest af hjulbører, der, afhængig af størrelsen, kan være motoriserede.Handling raw materials and the finished product is hard physical work that is stressful for the staff who operate the composite mixer and carry out the construction work. Therefore, the working environment rules on construction sites are constantly changing towards the manual work being taken over by machines. For example, conveyor belts, lifting boxes and the like are used. for lifting the raw materials into the forced mixer so that the handling of raw materials with hand blades is relieved. Similarly, the finished product is received in tubs, however, most often by wheel bearings which, depending on size, may be motorized.

Der må nødvendigvis udøves store kræfter for at tvangsblande råmaterialerne i fremstillingen til det færdige produkt. Derfor er der også høje krav til person sikkerhed, for at forhindre, at personer kommer i berøring med blanderens bevægelige dele.Great effort must be made to force the raw materials into the finished product into the finished product. Therefore, there are also high requirements for personal safety to prevent people from coming into contact with the moving parts of the mixer.

Myndighederne foreskriver derfor, at tvangsblanderens indløb, som er indrettet til at modtage råmaterialer ind i beholderen, må være beskyttet med et gitter, så det sikres, at personer ikke kan komme i berøring med de bevægelige dele. Dette gitter skal være udformet i henhold til standard EN 12151:2007.The authorities therefore stipulate that the inlet of the forced mixer, which is arranged to receive raw materials into the container, must be protected with a grille to ensure that persons cannot come into contact with the moving parts. This grid must be designed in accordance with standard EN 12151: 2007.

Yderligere er det et krav at blanderens udløb, for udtagelse af det færdigblandede produkt, er forsynet med et gitter, der sikrer, at personer hindres i at komme i berøring med tvangsblanderens bevægelige dele. Dette skal ligeledes være i henhold til EN 12151:2007.Further, it is a requirement that the outlet of the mixer, for extracting the finished product, is provided with a grille which ensures that persons are prevented from coming into contact with the moving parts of the forced mixer. This must also be in accordance with EN 12151: 2007.

Personsikkerheden på arbejdspladsen må ikke ignoreres. Imidlertid medfører de lovpligtige gitre en stor ulempe for byggearbejderne, da råmaterialerne har det med at stoppe gitteret til. Det er derfor nødvendigt, vedvarende at fjerne opbygningerne af materiale på gitteret. Dette medfører en del manuelt arbejde og irritation. Problemet er selvsagt større når der i råmaterialerne indgår cement eller andet, der kan hærde eller størkne og opbygge et lag på gitteret, som vanskeligt lader sig fjerne. Problemet viser sig både på gitteret i indløbet og på gitteret i udløbet. Irritationsmomentet er så stort at byggearbejderne i frustration enten fjerner beskyttelseslåget med gitteret, eller laver et hul heri, hvorefter tvangsblanderen ikke længere er lovlig, og kan medføre personskade.Do not ignore personal safety at work. However, the statutory grids cause a major disadvantage to the construction workers, as the raw materials tend to stop the grating. It is therefore necessary to continuously remove the build-up of material on the grid. This causes some manual labor and irritation. The problem is of course greater when the raw materials include cement or other that can harden or solidify and build up a layer on the grating that is difficult to remove. The problem appears both on the grid in the inlet and on the grid in the outlet. The moment of annoyance is so great that the construction workers, in frustration, either remove the protective cover with the grille or make a hole in it, after which the forced mixer is no longer legal and can cause personal injury.

Anvendes et transportbånd, en ophejskasse eller lignende til håndtering af råmaterialer ind i tvangsblanderen, er problemet selvsagt ikke mindre, da råmaterialerne leveres i en stadig strøm, og vedvarende på det samme areal på gitteret. Laver byggearbejderne i frustration et hul i gitteret hvor råmaterialerne leveres eller det færdige produkt udtages, er dette selvfølgelig en ulovlig handling, der kan have sikkerhedsmæssige konsekvenser. Afhængig af positioneringen af transportbåndet i forhold til indløbet, vil der være en åbning, hvor personer vil kunne komme i kontakt med tvangsblanderens bevægelige dele. Transportbåndet skal ligeledes være fastgjort til stedet hvor hullet er skåret. Samtidig må spillerum mellem transportbånd og rist opfylde de krav der stilles ifølge føromtalte standard, hvilket i praksis betyder at det skitserede problem forbliver uløst, da risten stadig hindrer passagen af råmaterialer ind i blanderen. Blanderen skal endvidere være forsynet med en sikkerhedsafbryder, der fungerer således, at fjernes båndet, vil blanderens motor øjeblikkeligt standse.Of course, if a conveyor belt, lift box or the like is used to handle raw materials into the forced mixer, the problem is of course no less, since the raw materials are supplied in a continuous stream, and persist on the same area of the grid. If the construction workers frustrate a hole in the grid where the raw materials are delivered or the finished product is taken out, this is obviously an illegal act that can have safety consequences. Depending on the positioning of the conveyor belt relative to the inlet, there will be an opening where persons will be able to come into contact with the movable mixer parts. The conveyor belt must also be attached to the place where the hole is cut. At the same time, clearance between conveyor belt and grate must meet the requirements set by the aforementioned standard, which in practice means that the outlined problem remains unsolved as the grate still prevents the passage of raw materials into the mixer. Furthermore, the mixer must be equipped with a safety switch that functions to remove the belt, the mixer motor will immediately stop.

Der er derfor brug for at tilvejebringe en løsning på det skitserede problem, at åbningerne for indløb og udløb på tvangsblanderen tilstoppes af henholdsvis råmaterialer og færdigt produkt, uden at de høje krav for personsikkerhed kompromitteres.Therefore, it is necessary to provide a solution to the outlined problem that the openings for the inlet and outlet of the forced mixer are clogged by raw materials and finished product respectively, without compromising the high requirements for personal safety.

Dette er, i henhold til opfindelsen, tilvejebragt ved at udforme en sikkerhedsanordning som beskrevet i krav 1, hvor sikkerhedsanordningen, i form af en sikkerhedssluse, er tilpasset til montering på en åbning for indløb og/eller en åbning for udløb på en blandemaskine, hvor passagen igennem sikkerhedsslusen er dimensioneret på en sådan måde at materiale kan passere, eksempelvis i portioner, men at det hindres, at personer, igennem sikkerhedsslusen, kan komme i berøring med dele, der befinder sig på den anden side af sikkerhedsslusen, eksempelvis blandemaskinens bevægelige dele.This is provided by the invention by designing a safety device as described in claim 1, wherein the safety device, in the form of a safety lock, is adapted for mounting on an inlet opening and / or an outlet opening on a mixing machine, wherein the passage through the security lock is dimensioned in such a way that material can pass, for example in portions, but that it is prevented that persons, through the security lock, can come into contact with parts located on the other side of the security lock, for example the moving parts of the mixer .

Ved at forsyne blandemaskinen med sikkerhedsslusen kan det sikkerhedsmæssigt tillades, at der laves en udskæring i beskyttelseslåget, hvori sikkerhedsslusen monteres.By providing the mixer with the safety lock, a safety cut can be allowed to be made in the protective lid in which the safety lock is mounted.

I en udførelsesform omfatter sikkerhedsslusen et kabinet med en første åbning, der fungerer som indløb, og en anden åbning, der fungerer som udløb, hvor kabinettet er forsynet med mindst to sluseporte således konfigureret, at sluseportene regulerer størrelsen af åbningen gennem sikkerhedsslusen.In one embodiment, the security lock comprises a housing with a first opening acting as an inlet and a second opening serving as an outlet, wherein the housing is provided with at least two lock gates configured such that the lock gates regulate the size of the opening through the security lock.

Afhængig af konfigurationen af sluseportene, er det således muligt at tilvejebringe en løsning, der lukker af for, at der er en sikkerhedskritisk åbning hele vejen gennem sikkerhedsslusen, selvom materiale udmærket kan fylde slusen og passere videre fra åbningen, der fungerer som indløb til åbningen, der fungerer som udløb. Det er givet, at der i konstruktionen skal tages hensyn til at udforme konstruktionen således at gravitationskræfterne medvirker til at bevæge materialet gennem sikkerhedsslusen.Thus, depending on the configuration of the lock gates, it is possible to provide a solution that closes for a safety-critical opening all the way through the security lock, although material can fill the lock very well and pass from the opening, which acts as an inlet to the opening, that acts as an outlet. It is a given that the design must take into account the design of the structure so that the gravitational forces help to move the material through the safety lock.

I en udførelsesform er sluseportene konfigureret således, at de danner mindst to slusekamre, for hvilket gælder, at når ét slusekammer er forbundet til åbningen i kabinettet, der fungerer som udløb, er et andet slusekammer forbundet til åbningen i kabinettet, der fungerer som indløb. Der vil således ikke være forbindelse direkte gennem slusen, og tyngden af det materiale der tilledes til sikkerhedsslusen gennem åbningen, der fungerer som indløb vil således hjælpe med til at tømme slusekammeret, der er forbundet til åbningen i kabinettet, der virker som udløb.In one embodiment, the lock gates are configured to form at least two lock chambers, which means that when one lock chamber is connected to the opening in the cabinet which acts as an outlet, another lock chamber is connected to the opening in the cabinet which acts as an inlet. Thus, there will be no direct connection through the sluice, and the weight of the material admitted to the security sluice through the opening acting as an inlet will thus help to empty the sluice chamber connected to the opening in the housing which acts as an outlet.

I endnu en udførelsesform omfatter sikkerhedsslusen en tromle. Tromlen er endvidere ophængt i kabinettet roterbar om sin akse, i en lejring, udformet i kabinettet på en sådan måde, at lejringen i kabinettet og lejringsmodparten i tromlen til sammen danner lejet.In yet another embodiment, the security lock comprises a drum. Furthermore, the drum is suspended in the cabinet rotatable about its axis, in a bearing, formed in the housing in such a way that the bearing in the housing and the bearing counterpart in the drum together form the bearing.

Lejringen, udformet i kabinettet, er i én udførelsesform udformet som en gennemgående aksel, alternativt to akseltappe, hvor den, på tromlen udformede lejringsmodpart, er et gennemgående rør, eller to bøsninger, eller rørtappe, der er konfigureret til at danne modpart til lejringen udformet i kabinettet.The bearing, formed in the housing, is in one embodiment configured as a through shaft, alternatively two shaft pins, wherein the bearing counterpart formed on the drum is a through tube, or two bushings, or tube pins configured to form counterpart to the bearing. in the cabinet.

I yderligere en udførelsesform udgør lejringen, udformet i kabinettet, et leje i form af en bøsning, eksempelvis udformet med et kugleleje, eller to rørtappe, hvor den, på tromlen udformede lejringsmodpart, er en gennemgående aksel, eller to akseltappe, der er konfigureret til at danne modpart til lejringen udformet i kabinettet.In a further embodiment, the bearing, formed in the housing, is a bearing in the form of a bushing, for example, formed with a ball bearing, or two pipe pins, where the bearing counterpart formed on the drum is a through shaft, or two shaft pins configured for to form a counterpart to the enclosure designed in the cabinet.

I en udførelsesform er tromlen forsynet med mindst to lameller, der virker som sluseporte mellem åbningen, der fungerer som indløb og åbningen, der fungerer som udløb. Ved at der er tale om en tromle, kan slusekammeret beskrives, som rumfanget mellem huset, der omslutter tromlen, og tromlens diameter begrænset omfangsmæssigt af afstanden mellem lamellerne. Materiale kan således portionsvist overføres mellem indløbet og udløbet uden at personer kan få adgang hele vejen gennem slusen.In one embodiment, the drum is provided with at least two slats acting as sluice gates between the opening acting as an inlet and the opening acting as an outlet. In the case of a drum, the sluice chamber can be described as the space between the housing enclosing the drum and the diameter of the drum limited in extent by the distance between the slats. Thus, material can be transferred in portions between the inlet and the outlet without allowing people to access all the way through the lock.

Det forstås at lamellerne er udformet på, eller fastgjort til tromlen, så de udgår radialt fra tromlen i forhold til tromlens rotationsakse. Herved kan de beskrive slusekamre ved at lukke af for et rumfang, idet tromlen bevæges rundt om rotationsaksen. For at kunne lukke slusekamret effektivt af, og undgå at sikkerhedsafstanden mellem en person, og de bevægelige dele kompromitteres, vil det være hensigtsmæssigt, om kabinettet er tilpasset til formen af tromlen med lameller, så kabinettets indre diameter matcher tromlens diameter. Det vil på samme måde være hensigtsmæssigt, om centeret for kabinettets diameter, ligesom tromlen, er akslen på hvilken tromlen er roterbart ophængt.It is understood that the slats are formed on, or attached to, the drum so that they project radially from the drum relative to the axis of rotation of the drum. Hereby they can describe lock chambers by closing off a volume, moving the drum around the axis of rotation. In order to effectively close the lock chamber and avoid compromising the safety distance between a person and the moving parts, it would be appropriate if the cabinet is adapted to the shape of the drum with slats so that the inside diameter of the cabinet matches the diameter of the drum. Similarly, it will be appropriate if the center of the diameter of the cabinet, like the drum, is the shaft on which the drum is rotatably suspended.

I en udførelsesform er lamellerne udformet, eller fastgjort på tromlen, således, at de beskriver den samme omdrejningsvinkel over hele længden af tromlens ophængnings- eller rotationsakse. Herved åbner, og lukker lamellerne sluseporten over hele længden på samme tid.In one embodiment, the slats are formed or secured to the drum so that they describe the same angle of rotation over the entire length of the drum's suspension or rotation axis. This opens and closes the slats over the entire length at the same time.

I en anden udførelsesform er lamellerne udformet, eller fastgjort på tromlen, således, at de beskriver en snegl i forhold til længden af tromlens ophængningsakse. Sneglen kan således variere fra at være større end nul graders forskel over længden af aksen til at beskrive flere omdrejninger (x gange 360 grader) , måske helt op til 50 omdrejninger omkring aksen, afhængig af dennes længde, hvilket vil kunne bidrage til at sørge for en effektiv passage af materialer gennem sikkerhedsslusen.In another embodiment, the slats are formed, or secured to the drum, such that they describe a screw relative to the length of the drum's suspension axis. Thus, the auger can range from being greater than zero degrees across the length of the axis to describing multiple turns (x times 360 degrees), perhaps as much as 50 turns around the axis, depending on its length, which may help to provide an efficient passage of materials through the security lock.

For at opnå en enkel konstruktion, er tromlen for sikkerhedsslusen i en udførelsesform udformet med lameller, der er en fast og ikke udskiftelig del af tromlen. Lamellerne, der er beskrevet her, kan være udformet i sin fulde udbredelse, men kan også i en anden udførelsesform være beregnet til at skulle forlænges med en udskiftelig lamel.In order to achieve a simple construction, in one embodiment, the safety lock drum is formed with slats which are a fixed and non-replaceable part of the drum. The slats described herein may be designed in their full extent, but may also in another embodiment be intended to be extended by a replaceable slat.

For at facilitere dette, er tromlen for sikkerhedsslusen, i endnu en udførelsesform, udformet med en adaptor for fastgørelse af løse udskiftelige lameller på tromlen. Adapteren kan i sig selv være en del af en lamel.To facilitate this, in another embodiment, the safety lock drum is provided with an adapter for attaching loose interchangeable slats to the drum. The adapter can itself be part of a slat.

Afhængig af anvendelsen af blanderen, og de ønskede egenskaber for lamellerne i forbindelse med rengøringsvenlighed, forhindring af opbygning af materiale på lamellerne mv. kan lamellerne være helt eller delvist fremstillet af mindst et af materialerne: plast, teflon, gummi eller metal, rustfrit stål, aluminium.Depending on the use of the mixer and the desired properties of the blades in connection with cleaning ease, prevention of build-up of material on the blades, etc. For example, the slats may be wholly or partially made of at least one of the materials: plastic, teflon, rubber or metal, stainless steel, aluminum.

For anvendelse af en tvangsblander i medicinal- eller levnesmiddel- industrien, vil det eksempelvis være ønskeligt, at kunne udforme hele tvangsblanderen, inklusive sikkerhedsslusen, i syrefast rustfrit stål med de rengøringsmæssige fordele det medfører. For en tvangsblander til beton, eller mørtelfremstilling, vil en lamel, hvori der indgår fleksible materialer, eksempelvis gummi, være særlig velegnet, da den er slidstærk, og modstandsdygtig over for mekanisk påvirkning fra hårde fraktioner af grus mm.For example, for use of a compulsive mixer in the pharmaceutical or food industry, it would be desirable to be able to design the entire composite mixer, including the safety lock, in acid-resistant stainless steel with the cleaning benefits it brings. For a composite mixer for concrete, or mortar manufacture, a slab incorporating flexible materials, such as rubber, will be particularly suitable as it is durable, and resistant to mechanical impact from hard gravel fractions, etc.

Lamellerne kan yderligere være forsynet med en pakning, en skraber, eller en kost, der hjælper med at holde slusen ren og funktionsdygtig.The slats may additionally be provided with a gasket, a scraper, or a broom to help keep the sluice clean and functional.

Sikkerhedsslusen, ifølge opfindelsen, er anvendelig til, såvel nye, som eksisterende blandemaskiner af forskellige fabrikater. Eksempelvis kan en eksisterende blandemaskine bringes til at opfylde gældende lovgivning ved, at beskyttelseslåget udskiftes til et låg med det lovpligtige gittermønster, hvori er foretaget en passende udskæring, der muliggør montering af sikkerhedsslusen, og hvor sikkerhedsslusen er monteret.The safety lock according to the invention is applicable to both new and existing mixers of various makes. For example, an existing mixer can be brought into compliance with existing legislation by replacing the protective cap with a cap with the statutory grid pattern, in which a suitable cut is made to allow the safety lock to be mounted and where the safety lock is mounted.

Sikkerhedsslusen er endvidere indrettet til, at åbningen, der er beregnet til, at fungere som indløb for råmaterialer til fremstilling af et færdigt produkt, kan modtage råmaterialer, der kastes ind, som eksempelvis når de afleveres med en håndbetjent skovl.The security lock is further arranged so that the opening, which is intended to act as an inlet for raw materials for the manufacture of a finished product, can receive raw materials thrown in, such as when delivered with a hand operated bucket.

Sikkerhedsslusen er ligeledes indrettet til, og egnet til, at modtage råmaterialer, der leveres til åbningen med et transportbånd, uden at den stadige strøm af materiale leder til at stoppe sikkerhedsslusen til, da materialet effektivt videreføres gennem sikkerhedsslusen. Det samme vil gøre sig gældende, hvor indløbet på sikkerhedsslusen modtager råmaterialer, der leveres fra en ophejskasse, indrettet til at løfte råmaterialer op til åbningen af sikkerhedsslusen. Det bemærkes at med monteringen af sikkerhedsslusen bortfalder alle sikkerhedsmæssige krav til fiksering af et transportbånds udløb til indløbet på blanderen, da sikkerhedsafstanden til personer ikke længere er kritisk.The security lock is also designed to, and suitable for, receiving raw materials delivered to the opening with a conveyor belt, without the constant flow of material leading to stopping the security lock as the material is effectively passed through the security lock. The same will apply where the inlet of the security lock receives raw materials delivered from a lift box arranged to lift raw materials up to the opening of the security lock. It is noted that with the mounting of the safety lock, all safety requirements for fixing a conveyor belt outlet to the inlet on the mixer lapse, as the safety distance for persons is no longer critical.

I en særlig udførelsesform, er sikkerhedsslusen tilpasset til at blive monteret under udtømningslemmen på blandemaskinen, hvorved gitteret kan fjernes, og tilstopning, og irritation kan undgås.In a particular embodiment, the safety lock is adapted to be mounted under the discharge flap of the mixer, thereby removing the grating and clogging and avoiding irritation.

I et andet aspekt af opfindelsen, der har baggrund i en blandemaskine, eksempelvis en tvangsblander, en gennemstrømsblander, en modstrømsblander m.fl., omfatter blandemaskinen en beholder, der er indrettet med en anordning for tvangsblanding af råmaterialer til et færdigt produkt, hvor beholderen har en åbning til at modtage råmaterialer, og en åbning til at lede det færdige produkt ud af tvangsblanderens beholder hvor blandemaskinen endvidere på mindst en af åbningerne, og oftest på begge, er forsynet med sikkerhedsanordningen, som beskrevet, der hindrer at personer kan komme i berøring med tvangsblanderens bevægelige dele.In another aspect of the invention, which has a background in a mixing machine, for example a forced mixer, a flow mixer, a counter flow mixer and the like, the mixing machine comprises a container arranged with a device for forced mixing raw materials into a finished product, where the container has an aperture for receiving raw materials and an aperture for passing the finished product out of the forced mixer container where the mixing machine is further provided on at least one of the apertures, and most often on both, with the safety device as described which prevents persons from entering contact with the movable mixer parts.

Opfindelsen omfatter også en metode til eftermontering, af en sikkerhedsanordning på indløbet på en blandemaskine omfattende:The invention also includes a method of retrofitting a safety device on the inlet of a mixing machine comprising:

Et første trin hvor der i sikkerheds -risten eller -låget laves en åbning for modtagelse af sikkerhedsanordningen ifølge opfindelsen, alternativt afmonteres den eksisterende sikkerheds -rist eller -låg, og erstattes med et låg hvori er lavet en åbning for modtagelse af sikkerhedsanordningen ifølge opfindelsen, og et andet trin i hvilket sikkerhedsanordningen ifølge opfindelsen monteres, enten når sikkerheds -risten eller -låget er monteret på blandemaskinen eller før denne monteres på blandemaskinen, hvorefter blandemaskinen er klar til anvendelse og opfylder de gældende myndighedskrav.A first step wherein an opening for receiving the security device according to the invention is made in the security grate or lid, alternatively, the existing security grating or lid is removed and replaced with a lid in which an opening for receiving the security device according to the invention is made, and another step in which the safety device according to the invention is mounted, either when the safety grate or lid is mounted on the mixer or before it is mounted on the mixer, after which the mixer is ready for use and meets the applicable regulatory requirements.

Opfindelsen omfatter også en metode til eftermontering af en sikkerhedsanordning på udløbet på en blandemaskine omfattende: et første trin hvor sikkerhedsristen under udtømningslemmen fjernes, og et andet trin hvor sikkerhedsanordningen ifølge opfindelsen monteres over åbningen under udtømningslemmen, hvorefter blandemaskinen er klar til anvendelse og opfylder de gældende myndighedskrav.The invention also includes a method for retrofitting a safety device on the outlet of a mixing machine comprising: a first step of removing the safety grate under the discharge flap, and a second step of mounting the safety device according to the invention over the opening under the discharge flap, after which the mixing machine is ready for use and meets the applicable regulatory requirements.

Et udførelseseksempel for tvangsblanderen, ifølge opfindelsen, skal i det følgende beskrives nærmere under henvisning til medfølgende tegning, hvor:An exemplary embodiment of the forced mixer according to the invention will be described in the following with reference to the accompanying drawing, in which:

Fig. 1 viser en tvangsblander med en sikkerhedssluse,FIG. 1 shows a forced mixer with a safety lock,

Fig. 2 viser et tværsnit af en tvangsblander, fig. 3 viser sikkerhedsslusens kabinet, fig. 4 viser sikkerhedsslusen adskilt, fig. 5 viser et tværsnit af sikkerhedsslusen, og fig. 6 viser tromlen for sikkerhedsslusen adskilt, sammen med akslen for ophænging af tromlen i kabinettet.FIG. 2 shows a cross section of a forced mixer; FIG. 3 shows the housing of the safety lock; FIG. 4 shows the security lock separately; FIG. 5 is a cross-sectional view of the security lock; FIG. 6 shows the drum for the safety lock separately, together with the shaft for hanging the drum in the cabinet.

Den på fig. 1 viste tvangsblander 1, viser tvangsblanderens beholder 2, indrettet til at modtage råmaterialerne, enten gennem risten, der udgør beskyttelseslåget 3, eller gennem sikkerhedsslusen 4. Tvangsblanderen 1, som vist er transportabel og forsynet med hjul 5, og en støttefod 6, samt en trækstang 7. Det færdige produkt udtages i bunden af beholderen 2 fra en udtømningslem (ikke vist), og kan således ledes direkte ned i en hjulbøre, for udbringning til anvendelsesstedet. Udtømningslemmen er hensigtsmæssigt også bestykket med en sikkerhedssluse 8, som er specielt indrettet til at blive monteret herpå.The FIG. 1, the forced mixer container 2, arranged to receive the raw materials, either through the grate constituting the protective lid 3, or through the security lock 4. The forced mixer 1, which is shown to be transportable and provided with wheels 5, and a supporting foot 6, and a drawbar 7. The finished product is withdrawn at the bottom of the container 2 from a discharge flap (not shown), and thus can be guided directly into a wheelbase for application to the place of use. Conveniently, the discharge flap is also provided with a safety lock 8, which is specially adapted to be mounted thereon.

Tvangsblanderen er endvidere som vist i fig. 2 forsynet med en bevægelig indretning 9, der sørger for at blande råvarerne, og fremstille det færdige produkt.Furthermore, as shown in FIG. 2 is provided with a movable device 9 which mixes the raw materials and prepares the finished product.

Fig. 3 viser sikkerhedsslusen 4,8 set i perspektiv. Kabinettet for sikkerhedsslusen 4,8 er forberedt for montage i beskyttelseslåget 3, ved hjælp af monteringshullerne 10, i foden af kabinettet og monteres effektivt med en passende boltforbindelse. Når sikkerhedsslusen 4 er monteret i beskyttelseslåget 3, gennem den udskæring, der er foretaget, hviler kabinettet på beskyttelseslåget 3.FIG. 3 shows the security lock 4.8 in perspective. The enclosure for the security lock 4,8 is prepared for mounting in the protective cover 3, by means of the mounting holes 10, in the foot of the enclosure and is effectively mounted with an appropriate bolt connection. When the safety lock 4 is mounted in the protective cover 3, through the cutout made, the housing rests on the protective cover 3.

Som det fremgår af fig. 4, der viser sikkerhedsslusen adskilt, er en tromle 11 ophængt frit roterbar på en aksel 12, fastgjort i to gennemføringer 13,14 udført på sidestykkerne 15,16. Tromlen 11 er forsynet med lameller 17, og de to skjold 18, 19, er tilpasset til akkurat at omslutte lamellerne 17.As shown in FIG. 4, showing the safety lock separately, a drum 11 is suspended freely rotatable on a shaft 12, secured in two passages 13,14 performed on the side pieces 15,16. The drum 11 is provided with slats 17, and the two shields 18, 19 are adapted to precisely enclose the slats 17.

Fig. 5 viser et tværsnit af sikkerhedsslusen 4, hvor det fremgår, at lamellerne 17 indbyrdes beskriver slusekamre 20, hvor afstanden her er dimensioneret således, at et slusekammer 20 først åbnes for aflevering af sit indhold ud i åbningen 21, der fungerer som output, når slusekammeret 20 er lukket for at modtage input fra åbningen 22, der fungerer som input. Herved sikres, at personer ikke kan komme i direkte berøring med de bevægelige dele, der befinder sig i tvangsblanderens 1 beholder 2.FIG. 5 shows a cross-section of the security lock 4, showing that the slats 17 mutually describe locking chambers 20, the distance here being dimensioned so that a locking chamber 20 is first opened for delivery of its contents into the opening 21, which acts as output when the locking chamber 20 is closed to receive input from aperture 22 which acts as input. This ensures that persons cannot come into direct contact with the moving parts which are in the compartment mixer container 2.

Fig. 5 viser tromlen 11 for sikkerhedsslusen 4, adskilt sammen med akslen 12, for ophængning af tromlen 11 i kabinettet for sikkerhedsslusen 4,8. Heraf fremgår det, at tromlen 11 er sammensat af et rør 23, der kan rotere på akslen 12. Akslen 11 fastspændes i sidestykkerne 15,16 ved hjælp af møtrikkerne 24, 25. Endvidere er tromlens 11 rør 20 indrettet med udfræsninger 26, for modtagelse af lameller 17, der, hvis materialet tillader det, kan svejses sammen med røret 23, for at danne en rotor lignende tromle 11. Tromlen 11 kan med de indbyggede sluser, der beskrives af afstanden mellem lamellerne 17, videreføre en mængde materiale igennem sikkerhedsslusen 4,8 for hver gang slusen fyldes og tømmes.FIG. 5 shows the drum 11 for the security lock 4, separated together with the shaft 12, for hanging the drum 11 in the cabinet for the security lock 4.8. From this it can be seen that the drum 11 is composed of a tube 23 which can rotate on the shaft 12. The shaft 11 is clamped in the side pieces 15,16 by the nuts 24, 25. Furthermore, the tube 20 of the drum 11 is provided with cutters 26 for receiving of slats 17 which, if the material allows, can be welded together with the tube 23 to form a rotor similar to drum 11. The drum 11, with the built-in locks described by the distance between the slats 17, can carry a quantity of material through the safety lock 4 , 8 for each time the lock is filled and emptied.

Monteret på beskyttelseslåget 3 foregår passagen af materiale gennem sikkerhedsslusen 4 i en vinkel, hvor gravitationskræfterne kan hjælpe med at få tromlen 11 til at dreje rundt. Herved opstår en "vakuum" effekt, hvor materiale der afleveres, trækker nyt materiale ind i slusen. Da tromlen 11 er ophængt let roterbar om akslen 12, uden stor friktion, og lamellerne 17 er udformet med henblik på at undgå at materialer fæstner sig til lamellerne 17, eller til skjoldene 18, 19, opnås at råmaterialer let og ukompliceret bliver ført ind i beholderen 2. Det samme gælder for færdige produkter i det tilfælde at sikkerhedsslusen 4,8 er monteret på udtømningslemmen.Mounted on the protective cover 3, the passage of material takes place through the security lock 4 at an angle where the gravitational forces can help cause the drum 11 to rotate. This results in a "vacuum" effect, where material being delivered pulls new material into the lock. Since the drum 11 is suspended easily rotatable about the shaft 12, without great friction, and the slats 17 are designed to prevent materials from adhering to the slats 17, or to the shields 18, 19, raw materials are easily and uncomplicatedly inserted into the container 2. The same applies to finished products in case the safety lock 4.8 is mounted on the discharge flap.

Om sikkerhedsslusen tilføres materialer manuelt med en håndbetjent skovl, eller tilførslen sker via et transportbånd, eller en ophejskasse, er ligegyldigt for systemets virkemåde, da slusen er indrettet til at modtage og videresende materiale, det værende sig råmateriale eller færdigblandet produkt, uden at dette ophober sig, eller danner belægning i åbningen.Whether the security lock is supplied to materials manually with a hand operated bucket, or the supply is via a conveyor belt or lifting box, does not matter to the operation of the system, as the lock is designed to receive and forward material, be it raw material or finished product, without this accumulating say, or form coating in the opening.

Claims

A safety device comprising a housing with an inlet and an outlet forming a safety lock, the safety device further comprising a drum, wherein the drum is suspended in the cabinet freely rotatable about its axis, wherein the safety lock is adapted for mounting on an opening for inlet and / or an opening for outlet on a mixing machine, where the passage through the safety lock is dimensioned in such a way that material can pass, for example in portions, but preventing persons from coming into contact with parts which are on the other side of the mixer. the safety lock, for example the moving parts of the mixer.

Security device according to claim 1, characterized in that the housing constituting the security lock has a first opening which acts as an inlet and a second opening which acts as an outlet, wherein the housing is provided with at least two lock gates, so configured that the lock gates regulate. the size of the opening through the security lock.

Security device according to claim 2, characterized in that the locking gates are configured to form at least two locking chambers, which means that when one locking chamber is connected to the opening in the housing which acts as an outlet, another locking chamber is connected to the opening. in the cabinet which acts as inlet.

Safety device according to claim 3, characterized in that the drum in the safety lock is suspended in the cabinet rotatable about its axis, in a bearing, designed in the housing in such a way that the bearing in the housing and the bearing counterpart in the drum form the bearing and wherein the drum is provided with at least two slats acting as locking gates between the opening serving as input and the opening serving as output.

Safety device according to claim 4, characterized in that the slats are formed on or attached to the drum so that they radially extend from the drum relative to the drum's suspension axis.

Safety device according to claim 5, characterized in that the slats are formed or fixed on the drum, so that they describe the same angle of rotation over the entire length of the drum's suspension axis.

Safety device according to one of claims 4 to 6, characterized in that the drum for the safety lock is formed with slats which are a fixed and non-replaceable part of the drum and / or that the drum for the safety lock is designed with an adapter for fixing loose interchangeable slats on the drum.

Security device according to one of claims 4 to 7, characterized in that the slats are made wholly or partially of at least one of the materials: plastic, teflon, rubber, or metal, stainless steel, aluminum.

Security device according to one of claims 7 to 8, characterized in that the slats are further provided with a gasket, a scraper or a broom.

A mixing machine such as, for example, a forced mixer, a flow mixer, a counter flow mixer and the like, wherein the mixing machine comprises at least one container provided with a device for forced mixing raw materials into a finished product, the container having an opening for receiving raw materials, and an opening for passing the finished product out of the container, characterized in that the mixing machine is provided on at least one of the openings with the safety lock according to one of claims 1 to 9.