EP3964294A1 - Dispositif broyeur - Google Patents

Dispositif broyeur Download PDF

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Publication number
EP3964294A1
EP3964294A1 EP21195078.7A EP21195078A EP3964294A1 EP 3964294 A1 EP3964294 A1 EP 3964294A1 EP 21195078 A EP21195078 A EP 21195078A EP 3964294 A1 EP3964294 A1 EP 3964294A1
Authority
EP
European Patent Office
Prior art keywords
crusher
jaw
crusher member
space
jaw crusher
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
EP21195078.7A
Other languages
German (de)
English (en)
Inventor
Dirk Willem EERLAND
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.)
Circulair Mineraal BV
Original Assignee
Circulair Mineraal BV
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 Circulair Mineraal BV filed Critical Circulair Mineraal BV
Publication of EP3964294A1 publication Critical patent/EP3964294A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C1/00—Crushing or disintegrating by reciprocating members
    • B02C1/02—Jaw crushers or pulverisers

Definitions

  • the present invention relates to a crusher device comprising a frame with a crusher assembly, which crusher assembly comprises a first jaw crusher member and an opposite second jaw crusher member which mutually bound a first crusher space, wherein at least the first jaw crusher member is movably suspended and is provided with a drive which imparts thereto during operation an oscillating displacement which alternately increases and reduces the first crusher space, wherein the first crusher space comprises at a first outer end between the first and second jaw crusher member an inlet for material and provides at an opposite outer end between the first and second jaw crusher member a first outlet for discharge of material which was comminuted between the first and second jaw crusher member.
  • a jaw crusher member is understood to mean an optionally stationary crusher member with an operational surface and a suspension which are sufficiently strong and rigid to withstand a force of the material and to produce a counterforce sufficient for wholly or partially breaking up the material.
  • a crusher device of the above stated type is mainly utilized to break up and crush stone, such as natural stone, rubble and particularly concrete.
  • the material for comminuting is here preferably rid of alien materials, such as (rebar) iron and other metal parts, carried to an inlet of the crusher device and introduced into the first crusher space between the jaw crusher members.
  • An oscillating jaw movement is imparted to at least one of the jaw crusher members, whereby the stone succumbs under pressure and splits up into smaller parts. This smaller material exits the crusher device at an outlet which is formed on an underside by a narrow gap between the first and second jaw crusher member.
  • Such a device is for instance known from International patent application WO 2019/206654 .
  • the crusher device described therein comprises a fixed jaw crusher member and a jaw crusher member placed opposite thereto which is driven by an eccentric so as to perform an oscillating jaw movement.
  • This jaw crusher member here in each case approaches the fixed jaw crusher member alternately to greater or lesser extent, whereby the size of an intermediate space therebetween changes in alternating manner.
  • This intermediate space forms a crusher chamber into which rubble can be poured and be crushed into smaller pieces between the first and second jaw crusher member.
  • Concrete generally consists of sand, cement and gravel, of which it is particularly the production of cement which has a considerable impact in respect of the use of fossil fuels and an associated emission of greenhouse gases, such as carbon dioxide. It is therefore desirable to reclaim as much cement from used concrete as possible so it can be reused.
  • the present invention therefore has for its object to provide a crusher device which enables a separation of concrete into said individual components.
  • a crusher device of the type described in the preamble has the feature according to the invention that the crusher assembly comprises downstream of the outlet at least a third crusher member, that the first jaw crusher member and the third crusher member mutually bound a second crusher space which alternately increases and decreases during the oscillating displacement of the first jaw crusher member, wherein the second crusher space comprises at a first outer end between the first jaw crusher member and the third crusher member an inlet for the material which was comminuted between the first jaw crusher member and the second jaw crusher member and provides at an opposite outer end between the first and second jaw crusher member a second outlet for discharge of material which was comminuted further between the first jaw crusher member and the third crusher member.
  • the first jaw crusher member and the third crusher member are thus able and configured to mutually co-act in the second crusher space and further comminute the material received therein.
  • the invention is here based on the insight that the driven first jaw crusher member can bring about not only a primary crushing of the stone but also an additional crushing of the material once it has been comminuted.
  • the crusher device provides a second crusher space downstream of the first outlet, with a further jaw crusher member therein.
  • the first jaw crusher member is driven and suspended such that it not only enters into co-action during operation with the second jaw crusher member in order to crush material therebetween, but it moreover simultaneously co-acts with the further jaw crusher member in the second crusher space in order to additionally crush and thereby further comminute therein the material once it has been crushed partially or incompletely.
  • the third crusher member provides an operational surface and a suspension which are sufficiently strong and rigid to withstand a force of the material and to produce a counterforce which is sufficient to break up the material wholly or partially.
  • Concrete is a composite material of cement with sand and gravel as additives.
  • the weak component of concrete is the cement which has reacted with water and allowed the concrete to cure.
  • the additives sand and gravel are twenty to thirty times harder than this cement.
  • the load of the moving jaw crusher member on the previously broken material in the subsequent crusher space will therefore cause mainly the cement to succumb. It is suspected that this difference in hardness between relatively hard gravel and sand on one hand and relatively soft cement on the other contributes to a particularly effective mutual detachment of these materials.
  • a mutual friction and mobility of gravel pebbles in the second crusher space has furthermore also been found to be particularly effective for releasing any still attached sand/cement from the gravel.
  • the third crusher member opposite the outlet between the first and second jaw crusher member serves primarily to supply counterpressure to the jaw movement of the first jaw crusher member and the intermediate mass of material.
  • a preferred embodiment of the crusher device has the feature according to the invention that the third crusher member comprises a rigid wall, particularly of steel. In contrast to a more flexible or resilient wall, such a rigid wall does not yield, or hardly so, and the impulse of the first jaw crusher member will be absorbed almost completely by the stone.
  • a steel wall has here also been found to be a suitable choice from a viewpoint of wear and lifespan.
  • the third crusher member can per se be embodied as a stationary, rigid wall
  • a preferred embodiment of the crusher device has the feature according to the invention that the third crusher member is adjustable. It has been found that an adjustment of the third crusher member relative to the first outlet and the first jaw crusher member has an effect on the degree to which the material is comminuted further once it has been processed in the first crusher space.
  • the crusher device has the feature here according to the invention that a distance of the third crusher member relative to the first jaw crusher member is adjustable. A smaller distance of the third crusher member to the outlet results here in a more compact second crusher space and thereby in a relatively greater and more powerful action by the first jaw crusher member. By increasing the distance the degree to which the first jaw crusher member acts on the material can however be reduced. The device can thus be adapted to a nature of the material to be crushed and a desired degree of further crushing.
  • the degree of further crushing of the stone in the second crusher space has also been found to be associated with the residence time of the stone therein.
  • this residence time can be tuned.
  • a further embodiment of the crusher device according to the invention has the feature that an incline of the third crusher member relative to the first jaw crusher member is adjustable.
  • a preferred embodiment of the crusher device has the feature that an electronic control unit is provided, that the third crusher member is coupled to at least one mechanically driven actuator whereby at least one of a distance to the outlet and an incline relative to the outlet of the third crusher member is adjustable, and that the at least one actuator is controllable by the control unit.
  • the control unit is for instance coupled to an intuitive user interface and can additionally be coupled to one or more electronic sensors in order to control the process in the second crusher space at least largely autonomously on the basis of parameters entered beforehand by the user.
  • the third crusher member is formed by a chute with upright flanks which laterally bound the second crusher space, wherein the third crusher member is formed by a bottom of the chute.
  • the bottom and the flanks here together form one whole, wherein a height of the flanks can be tuned to an intended distance of the third crusher member to the outlet.
  • the device shown in the figures is arranged in a frame (not further shown) and comprises a drive in the form of a sufficiently powerful electric motor or combustion engine.
  • An output motor shaft 1 of the drive carries a drive wheel 2 which is coupled via a belt transmission 3 to a driven wheel 4.
  • the driven wheel 4 is driven rotatably by a rotation shaft 5 which is bearing-mounted in the frame and carries at an opposite outer end, outside the plane of the drawing, a flywheel to keep the device running during operation.
  • a first jaw crusher member 10 is coupled to driven wheel 4 eccentrically about an eccentric shaft 6. This eccentric transmission thus imparts to the jaw crusher member 10 in question both a lateral stroke s1 and a vertical stroke s2 which are shown in figures 1B and 1C for the purpose of illustration.
  • the jaw crusher member 10 is connected via a spring damper 7 to the frame in order to accommodate reactive forces in reliable manner during operation.
  • Jaw crusher member 10 comprises a solid steel body 11 on which a hard steel lining 12 is arranged.
  • Located opposite thereto is a similar second jaw crusher member 20.
  • the second jaw crusher member 20 also comprises a solid steel base part 21 with a hard steel lining 22 thereon.
  • the second jaw crusher member 20 is mounted in the frame fixedly, i.e. in stationary manner.
  • first crusher space 30 Situated between the first and second jaw crusher member 10, 20 is a first crusher space 30 which is accessible from above via an inlet 31 provided there.
  • the stone to be processed, particularly concrete rubble, can be let in via inlet 31 after optionally first being crushed to a standard size and/or sorted and rid of alien materials such as (rebar) iron in particular.
  • the lateral stroke s1 provides for a lateral displacement of the first jaw crusher member 10 in the first crusher space 30, whereby the volume thereof is alternately decreased and increased.
  • First and second jaw crusher member 10, 20 are placed at a mutual, and optionally adjustable, angle relative to each other so that the first crusher space 30 narrows toward an outlet 32 thereof. This provides for a progressive effect of the first and second jaw crusher member 10, 20 on stone poured therebetween, which is thereby put increasingly under pressure and is moved in comminuted state to the outlet 32.
  • the thus processed stone leaves the first crusher space 30 at first outlet 32.
  • the processed material is here received in a second crusher space 45 which is bounded by a third crusher member 40.
  • the third crusher member 40 comprises a bottom, about 15-30 millimetres thick, of a steel chute, see also figure 2 , with flanks 41, 42 standing upright on either side and likewise laterally bounding the second crusher space 45. Lying opposite thereto is the driven first jaw crusher member 10 which, when performing its vertical stroke, enters into the second crusher space to greater or lesser extent so as to once again act on the material received therein together with the third crusher member 40.
  • This additional crushing has been found in practice to result in a substantially complete separation of sand, cement and gravel of concrete, whereby these components are then suitable for reuse, after optionally having been sorted further.
  • a degree of additional crushing depends here, besides on the stroke s2 of the first jaw crusher member 10, on a distance d1 to the bottom 40 of the chute and an incline of bottom 40 relative to the first outlet 32 of the first and second jaw crusher member 10, 20.
  • both this distance d1 and the incline of chute bottom 40 are mechanically adjustable by means of actuators 51, 52 which are provided for this purpose and which are coupled to a control unit 50 of the device.
  • these parameters can be set or adjusted by a user, for instance by means of a user interface with screen coupled to the control unit for this purpose.
  • the process can also be monitored by means of one or more sensors or cameras which generate an output signal to control unit 50.
  • the invention provides a particularly effective addition to a crusher device, which allows a complete separation of concrete into its constituent parts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP21195078.7A 2020-09-04 2021-09-06 Dispositif broyeur Pending EP3964294A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2026411A NL2026411B1 (nl) 2020-09-04 2020-09-04 Kaakbrekerinrichting

Publications (1)

Publication Number Publication Date
EP3964294A1 true EP3964294A1 (fr) 2022-03-09

Family

ID=72802120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21195078.7A Pending EP3964294A1 (fr) 2020-09-04 2021-09-06 Dispositif broyeur

Country Status (2)

Country Link
EP (1) EP3964294A1 (fr)
NL (1) NL2026411B1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5810847U (ja) * 1981-07-09 1983-01-24 旭硝子株式会社 ジヨ−クラツシヤ−
JPS6053343U (ja) * 1983-09-19 1985-04-15 伊藤　恭司 建築用骨材の磨鉱装置
JPS61103551A (ja) * 1984-10-29 1986-05-22 川崎重工業株式会社 磨砕物粒形調整装置
WO2000041812A1 (fr) * 1999-01-15 2000-07-20 Hawkins Peter A T Dispositif et procede permettant de concasser le beton arme ou un materiau similaire
WO2011142663A1 (fr) * 2010-05-11 2011-11-17 Koos Jacobus Schenk Dispositif de séparation
WO2019206654A1 (fr) 2018-04-27 2019-10-31 Kleemann Gmbh Concasseur à mâchoires

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5810847U (ja) * 1981-07-09 1983-01-24 旭硝子株式会社 ジヨ−クラツシヤ−
JPS6053343U (ja) * 1983-09-19 1985-04-15 伊藤　恭司 建築用骨材の磨鉱装置
JPS61103551A (ja) * 1984-10-29 1986-05-22 川崎重工業株式会社 磨砕物粒形調整装置
WO2000041812A1 (fr) * 1999-01-15 2000-07-20 Hawkins Peter A T Dispositif et procede permettant de concasser le beton arme ou un materiau similaire
WO2011142663A1 (fr) * 2010-05-11 2011-11-17 Koos Jacobus Schenk Dispositif de séparation
WO2019206654A1 (fr) 2018-04-27 2019-10-31 Kleemann Gmbh Concasseur à mâchoires

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Publication number Publication date
NL2026411B1 (nl) 2022-05-04

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