WO2018207083A1 - Magnetic sludge separator for heating plants - Google Patents

Magnetic sludge separator for heating plants Download PDF

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Publication number
WO2018207083A1
WO2018207083A1 PCT/IB2018/053173 IB2018053173W WO2018207083A1 WO 2018207083 A1 WO2018207083 A1 WO 2018207083A1 IB 2018053173 W IB2018053173 W IB 2018053173W WO 2018207083 A1 WO2018207083 A1 WO 2018207083A1
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WO
WIPO (PCT)
Prior art keywords
cup
chamber
shaped body
valve
sludge separator
Prior art date
Application number
PCT/IB2018/053173
Other languages
French (fr)
Inventor
Marco Caleffi
Original Assignee
Caleffi S.P.A.
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 Caleffi S.P.A. filed Critical Caleffi S.P.A.
Publication of WO2018207083A1 publication Critical patent/WO2018207083A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0332—Component parts; Auxiliary operations characterised by the magnetic circuit using permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/06—Filters making use of electricity or magnetism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/153—Anti-leakage or anti-return valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/30—Combinations with other devices, not otherwise provided for
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0092—Devices for preventing or removing corrosion, slime or scale
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/22—Details of magnetic or electrostatic separation characterised by the magnetical field, special shape or generation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/28—Parts being easily removable for cleaning purposes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/007—Modular design
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/02—Fluid flow conditions
    • C02F2301/022—Laminar
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention

Definitions

  • the present invention relates to a magnetic sludge separator assembly comprising a filter apparatus integrated with a shut-off valve, suitable to be applied to a wall- mounted boiler in a heating plants, for implementing a mechanical and magnetic separation of polluting substances or particles drawn in suspension by a thermal fluid circulating in the heating plant.
  • shut-off valve manually operable to stop fluid from circulating when operating on the boiler and/or the heating plants is required for ordinary maintenance and/or possible repairs.
  • Mechanical and/or magnetic filters are known, for example, from WO 2013/041245, WO 2004/105954, WO 2013/150293 and EP 3159313 which represent the closest state of the art to the present invention.
  • WO 2013/041245 of the same Applicant, comprises an inner filter cartridge, configured for causing a reduction of the thermal fluid speed, and a separation of the polluting, ferrous and non magnetic particles which, by gravity fall into a quiet chamber separated from the filtration zone, where the ferrous particles are retained by a magnetic field generated by a plurality of removable permanent magnets arranged externally from the peripheral wall of the quieting chamber.
  • an object of the present invention is to provide a sludge separator assembly for heating plants, comprising a filter device integrated with a fluid shut-off valve, configured to allow their easy and simoultaneous installation in a small space, for example in a wall-mounted boiler of a heasting system, in substitution of common magnetic separators and common shut-off valves.
  • One further object of the invention is to provide the sludge separator assembly for heating plants comprising, in combination, a mechanical and magnetic filter device, integrated with a flow shut-off valve, configured such as to provide a wide surface for mechanical filtration of the non magnetic polluting substances, and a wide surface for magnetic separation of the ferrous particles, in a free from excessive turbulence condition, minimizing hydraulic head losses.
  • One further object of the invention is to provide a sludge separator for heating plants, as previously reported, wherein non magnetic particles and ferrous ones which have adhered to a retaining magnetic surface, can be easily drained by means of a suitable configuration of a drain outlet, allowing in addition the easy removal of the single filter device by always keeping the shut-off valve connected to the wall-mounted boiler; the separator cleaning operations thereby simplify significantly and time required for installation and maintenance operations reduce considerably.
  • a sludge separator for heating plants comprising, in combination, a filter device structurally and functionally integrated with a flow shut-off valve, according to claim 1.
  • Figure 1 is a longitudinal section, along line 1-1 of figure 3, of a first embodiment
  • Figure 2 is a longitudinal section along line 2-2 of figure 3:
  • Figure 3 is a cross section along line 3-3 of figure 1 ;
  • Figure 4 is a perspective view of the support for the mesh filter
  • Figure 5 is an enlarged longitudinal section of the magnetic filter of figure 1 ;
  • Figure 6 is a longitudinal section of a second embodiment.
  • the sludge separator comprises a structurally and functionally integrated assembly of a filter device 10 and a fluid shut-off valve 11.
  • the filter device 10 is supported by the shut-off valve 1 1, extends in one longitudinal direction and is configured with a side outlet 12 for draining sludge which deposit on a bottom wall 23', as hereinafter dislosed; the filter device 10 is also sealingly and disengageably connected with the shut-off valve 11, by means of a screw able ring unit 13.
  • the shut-off valve 11 comprises a body 14 configured with an inlet 15 for the fluid, for example connectable to the return line of a heating plant, and with an outlet 16 for the fluid, for example connectable to the inlet side of a heat exchanger of a commom wall-mounted boiler.
  • the shut-off valve 11 comprises a valve body 14 defining a closing cap of the filter device 10, configured with an inlet 15 for the fluid oriented orthogonally to the longitudinal axis of the filter device 10, and with the outlet 16 for the fluid oriented parallely to said longitudinal axis.
  • the inlet 15 extends in a short duct 17 ending with a partition wall defining a sealing seat 18 for a shutter 20, housed in one inlet chamber 19 opened downwards and towards a cylindrical mesh filter in a quiet zone of the underlyng filter device 10.
  • a shutter 20 is provided fastened to a shaft 21 which is operatively connected to a knob 22 to be manually operated between an opening condition, shown in the figure 2, and a closing condition against the sealing seat 18, by simply screwing the knob 22.
  • the inlet 15 of the shut-off valve 11 communicates fluidically with the outlet 16 through the filter device 10, as explained below.
  • the filter device 10 comprises a cup-shaped hollow body 23 of magnetically non-conductive material, e.g. brass, removably connected to the valve body 14 through the ring unit 13; the cup-shaped body 23 is closed by a bottom wall 23'.
  • a cup-shaped hollow body 23 of magnetically non-conductive material e.g. brass
  • the bottom wall 23' of the cup- shaped body 23, in the example of figure 2, is slanted towards the side drain outlet 12, comprising a ball valve 24 which can be manually actuated by a control pin 24', figure 3, for rotating between a closing condition and an opening condition of the drain outlet 12.
  • the filter device 10 is configured such as to allow fluid circulation in a condition of non turbolence between the inlet 15 and the outlet 16 of the shut-off valve 14; in particular it is configured such as to provide a quieting zone which extends longitudinally in the cup-shaped body 23, where the turbulent and vortical motion of the entering fluid is significantly reduced; thereby it is allowed both an efficient mechanical filtration action of non ferrous or non magnetically sensitive particles which make up for part of the polluting substances suspended in the fluid, as well as an efficient action of magnetic separation of ferrous particles transported by the thermal fluid, filtration and magnetic separation actions which conjointly occur along a central filtration chamber 27 longitudinally extending in the quieting zone of the cup-shaped body 23 of the filter device 10.
  • the filter device 10 comprises a mechanical filter, composed of a cylindrical mesh filter 25 which longitudinally extends in the cup-shaped body 23 between the edge 16' of the inlet chamber 19 of the valve body 14 and a lower support element 26 (shown in figure 4) positioned over the bottom wall 23' of the cup-shaped body 23, near the side drain outlet 12.
  • the cylindrical mesh filter 25 substantially extends across the whole lenth of the cup- shaped body 23, extending further until it abut against the peripheral edge 16' of the inlet chamber 19 of the valve body 14.
  • the cylindrical mesh filter 25 has a diameter lower than the inner diameter of the cup-shaped body 23; thereby the cylindical mesh filter divides the cup-shaped body 23 in a central filtration chamber 27 in fluidic communication with the chamber 19 and the inlet 15 of the valve body 14, and an annular chamber 28 arranged peripherally and coaxially to the central chamber 27.
  • the connecting annular chamber 28, as shown in figure 3, is therefore in fluidic communication both with the central chamber 27, through the cylindrical mesh filter
  • the cylindrical mesh filter 25 is arranged coaxially with respect to a support element 26 which, as shown in figure 4, comprises an upper annular element 30 and a lower annular element 31, axially spaced apart and connected by a plurality of longitudinal fins 32.
  • the upper annular element 30 has an inner diameter substantially corrsponding to the external diameter of a tubular seat 33 housing a magnetic core 34, as shown in figure 2 and explained hereinafter. Fins 32 extend downwards, beyond the lower annular element 31 to abut against the slanted bottom wall 23' of the cup-shaped body 23, in the assembled condition of figure 1.
  • the annular element 31 is positioned near the side drain outlet 12, and is configured with a conical surface radially extending from the outer longitudinal edge of the fins 32, against the inner surface of the cylindrical wall of the cup-shaped body 23; a decanting zone for the polluting substances is provided between the slanted bottom wall 23' of the cup-shaped body 23 and the annular element 31.
  • the lower annular element 31 has an external diameter equal to the internal diameter of the cup-shaped body 23, and an internal diameter slightly lower than the diameter of the tubular mesh filter 25; thereby the annular flange 31, in addition to supporting the mesh filter 25, defines a wide central opening 3 ⁇ in communication between the central chamber 27 of the mesh filter 25, and the decanting zone 26', due to the fall down of contaminant substances which are mechanically and magnetically separated from the circulating thermal fluid, falling by gravity, deposit as sludge on the bottom wall 23' of the cup-shaped body 23, wherefrom it can be discharged from time to time through the drain sideoutlet 12, by opening the ball valve 24.
  • the filter device 10 comprises a magnetic core 34 for separating ferrous particles drawn into circulation by the thermal fluid, along a quiet zone where they are magnetically retained against the external surface of the tubular housing 33.
  • the magnetic core 34 is removably inserted from the outside in one tubular seat 33 which extends from an opening 23 " of the bottom wall 23' of the cup-shaped body, longitudinally in the central chamber 27 of the cylindrical mesh filter 25.
  • the upperly closed tubular seat 33 and subsequently the magnetic core 34 extend longitudinally for a portion substantially equal to or higher than half the length of the cylindrical mesh filter 25.
  • the magnetic core 34 comprises a plurality of annular magnets 35 threaded on a central rod 36 of magnetically non conductive material, for example steel, placing an annular spacer 37 between the contigous annular magnets 34.
  • Annular magnets 35, spacers 37 and a disk 38 of non magnetic material are threaded and fixed to the central rod 36 by means of two bushes 39 screwed or otherwise fixed to the two ends of the rod 36.
  • the magnetic core 34 is removably housed in an outwardly opened tubular seat 33 through the opening 23" of the bottom wall 23' of the cup- shaped body 23; the magnetic core 34 is retained in its seat 33 by a fork 40 inserted in specific holes of the bottom wall 23'; the two arms of the fork 40 are positioned below the disk 38.
  • the magnetic core 34 may be fixed in a different way, while having the possibility to be axially removed by operating from outside, without opening or removing the whole filter device, while keeping it in function.
  • the magnetic core 34 can however be configured with one or more permanent magnets 35 however axially or radially magnetized, as far as they are suitable to generate a magnetic field for attracting ferrous particles present in the thermal fluid, whose magnetic flow lines extend into the central chamber 27 of the cylindrical mesh filter 25.
  • Good results were obtained from tests performed by using axially polarized magnetic rings, wherein two contigous magnetic rings have facing magnetic poles with the same polarity N, S as well as by interposing a spacer 37 of ferromagnetic material.
  • the filter devicelO and shut-off valve 11 assembly represents a functionally and structurally integrated operative unit, wherein the inlet port 15 and the outlet port 16 of the valve 11 can be easily connected to the fittings of a commonly wall-mounted boiler or, more in general to the circuiti of a heating plant.
  • the inlet port 15 and the outlet port 16 are oriented in an orthogonal direction, respectively in a direction parallel to the longitudinal axis of the filter material 10; however it is not to be excluded that one or both ports 15 and 16 may have one or any other configuration and/or arrangement with respect to the valve body 14 and the filter device.
  • the filter device 10 is directly integrated, structurally and fluidically with the valve 11, it is clear that the assembling operations and/or removal of the whole device are extremely simplified.
  • the particular integrated configuration of the filter device 10 and of the shut-off valve 11, and the presence of a broad quieting zone allow a more efficient filtering action, as mechanical filtration and magnetic separation occur simoultaneously along a substantial portion of the filter length, in absence of strong turbolences in the thermal fluid.
  • the particular configuration of the magnetic core and its arrangement in a housing seat directly immersed in the entering fluid allow to significantly increase the efficacy of the magnetic separation of ferrous particles drawn by the fluid flowing into the central chamber 27 which, following the removal of the magnetic core 34, fall down by virtue of gravity in the decanting zone 26', where they deposit as sludge on the bottom wall 23' of the cup-shaped body 23.
  • sludge deposited on the bottom 23' of the cup-shaped body 23 can be eliminated by simply washing, by manually opening the drain valve 24.
  • the bottom wall 23' is slanted towards the drain outlet 12, thereby facilitating the sludge outflow.
  • the sludge magnetic separator 6 comprises a filter device 10 integrated with a valve device 11 manually operable for stopping the thermal fluid circulation when maintenance activities are to be performed in the heating plant or in the wall- mounted boiler.
  • the filter device 10 comprises a cup-shaped body 23 having a bottom wall 23' slanted towards a side drain outlet 12 provided with a normally closed ball valve 24, manually operable for draining sludge deposited on the bottom wall 23', in the decanting zone 26'.
  • the cup-shaped body 23, by means of the screwable ring unit 13, is removably linked to a lid or closure body 14 configured with an inlet port 15 and an outlet port 16 for the thermal fluid.
  • the body 14 of the closure lid integrated with the valve device 11, is configured again with a first chamber 19 connected with the inlet port 15, and with a second chamber 29 connected with the outlet port 16.
  • the body 14 of the closure lid is integrated with a shut-off valve 41 of the ball type manually operable for opening and closing by acting on a control lever 42.
  • the ball valve 41 can be otherwise configured to allow the fluid entrance in one direction parallel to the longitudinal axis of the filter device 10, as shown, or in any other direction.
  • the filter device 10 of figure 6 is at all similar to the filter device 10 of the preceding figures; thus, also in the example of figure 6 the filter device 10 comprises a cylindrical mesh filter 25 longitudinally extending in a quieting zone of the cup- shaped body 23, wherein the cylindrical mesh filter 25 and the cup- shaped body 23 define again a central filtration chamber 27 fluidically connected to the first chamber 19 of the closure lid 14, and an annular chamber 28 connected fluidically to the central chamber 27 through the cylindrical filter 25, respectively fluidically connected to the second chamber 29 of the closure body or lid 14.
  • An elongated magnetic core 34 is inserted in a tubular seat 33 axially extending into the cup- shaped body 23.
  • the cup- shaped body 23 at the bottom wall 23' comprises a side drain outlet 12 provided with a normally closed valve 24; the bottom wall 23' of the cup-shaped body 23 is slanted towards the side drain outlet 12 to ease draining sludge which deposited on the bottom of the cup-shaped body by opening the drain valve 24, while keeping in function the magnetic separator and the heating plant.
  • the magnetic core 34 is removably threaded from the outside, into a tubular seat 33 closed inwards, which extends into the central filtration chamber 27 from an opening 23" of the bottom wall 23' of the cup-shaped body 23.
  • a support element 26 for the mesh filter 25 is configured with a first upper annular element 33 connected by a plurality of longitudinal fins 32 to a second annular element 31 radially extending against the inner surface of the cup- shaped body 23.
  • the magnetic core 34 is provided with two rings 43 of elastomeric material, for press-fitting the magnetic core 34 into the housing tubular seat 33.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Valves (AREA)

Abstract

A sludge magnetic separator adapted to be applied to a wall-mounted boiler of a heating plant; the separator comprises a filter device (10) integrated with a fluid shut- off valve (11), wherein the filter device is configured with a cup-shaped body (23) for housing a mesh filter, and a lid (14) having an inlet (15) for the fluid communicating with a first chamber (19), and an outlet (15) communicating with a second chamber (29). A cylindrical mesh filter (25) divides the cup-shaped body (23) in a central cylindrical chamber (27) and an annular chamber (28) arranged peripherically to the central cylindrical chamber (27), which communicate with the first chamber (19) respectively with the second chamber (29) of the lid (14). The filter device (10) further comprises a magnetic core (34) housed, removably from the outside, in a tubular seat (33) longitudinally extending into the central chamber (27) of the filter device (10), from an opening (23") at a bottom wall (23') of the cup- shaped body (23) slanted towards a side drain outlet (12).

Description

MAGNETIC SLUDGE SEPARATOR FOR HEATING PLANTS
BACKGROUND OF THE INVENTION
The present invention relates to a magnetic sludge separator assembly comprising a filter apparatus integrated with a shut-off valve, suitable to be applied to a wall- mounted boiler in a heating plants, for implementing a mechanical and magnetic separation of polluting substances or particles drawn in suspension by a thermal fluid circulating in the heating plant.
STATE OF THE ART
In thermal plants comprising a common wall-mounted boiler, of the gas type, it is generally required the installation of a shut-off valve manually operable to stop fluid from circulating when operating on the boiler and/or the heating plants is required for ordinary maintenance and/or possible repairs.
As the thermal fluid circulating in a heating plant normally draws into suspension polluting substances or particles that can deposit as sludge in critical zones of the plant and/or in the wall-mounted boiler thereof, some filter devices have variously been proposed for mechanically and/or magnetically separating the polluting substances from the thermal fluid, having them deposited at the bottom of the same filter device, and that can from time to time be drained through a suitable drain valve.
Mechanical and/or magnetic filters are known, for example, from WO 2013/041245, WO 2004/105954, WO 2013/150293 and EP 3159313 which represent the closest state of the art to the present invention.
In particular WO 2013/041245, of the same Applicant, comprises an inner filter cartridge, configured for causing a reduction of the thermal fluid speed, and a separation of the polluting, ferrous and non magnetic particles which, by gravity fall into a quiet chamber separated from the filtration zone, where the ferrous particles are retained by a magnetic field generated by a plurality of removable permanent magnets arranged externally from the peripheral wall of the quieting chamber.
On the contrary, documents WO 2004/105954, WO 2013/150293 and EP 3159313 show a separator wherein a magnetic core protrudes inwards from a closing cap. In view of the particular configuration, in this kind of separators it is necessary to open the same separator, to perform an adequate cleaning or maintenance, stopping the fluid circulation in the heating plant.
In addition, the separate installation of a currently available shut-off valve and magnetic separator, implies, in addition to comparably higher costs, several constructive problems, separated installation operations, as well as a limited filtering capacity.
OBJECTS OF THE INVENTION
Thus, there is the need for a new and suitable different solution to solve the aforementioned problems.
In particular, an object of the present invention is to provide a sludge separator assembly for heating plants, comprising a filter device integrated with a fluid shut-off valve, configured to allow their easy and simoultaneous installation in a small space, for example in a wall-mounted boiler of a heasting system, in substitution of common magnetic separators and common shut-off valves. One further object of the invention is to provide the sludge separator assembly for heating plants comprising, in combination, a mechanical and magnetic filter device, integrated with a flow shut-off valve, configured such as to provide a wide surface for mechanical filtration of the non magnetic polluting substances, and a wide surface for magnetic separation of the ferrous particles, in a free from excessive turbulence condition, minimizing hydraulic head losses.
One further object of the invention is to provide a sludge separator for heating plants, as previously reported, wherein non magnetic particles and ferrous ones which have adhered to a retaining magnetic surface, can be easily drained by means of a suitable configuration of a drain outlet, allowing in addition the easy removal of the single filter device by always keeping the shut-off valve connected to the wall-mounted boiler; the separator cleaning operations thereby simplify significantly and time required for installation and maintenance operations reduce considerably.
BRIEF DESCRIPTION OF THE INVENTION
The above was possible by means of a sludge separator for heating plants comprising, in combination, a filter device structurally and functionally integrated with a flow shut-off valve, according to claim 1.
BRIEF DESCRIPTION OF THE DRAWINGS
The sludge separator according to the invention, and some preferential features, will be better described hereinafter, referring to the enclosed drawings, wherein:
Figure 1 is a longitudinal section, along line 1-1 of figure 3, of a first embodiment;
Figure 2 is a longitudinal section along line 2-2 of figure 3:
Figure 3 is a cross section along line 3-3 of figure 1 ;
Figure 4 is a perspective view of the support for the mesh filter;
Figure 5 is an enlarged longitudinal section of the magnetic filter of figure 1 ; Figure 6 is a longitudinal section of a second embodiment. DETAILED DESCRIPTION OF THE INVENTION
As shown in the example of figures 1 and 2, the sludge separator comprises a structurally and functionally integrated assembly of a filter device 10 and a fluid shut-off valve 11. The filter device 10 is supported by the shut-off valve 1 1, extends in one longitudinal direction and is configured with a side outlet 12 for draining sludge which deposit on a bottom wall 23', as hereinafter dislosed; the filter device 10 is also sealingly and disengageably connected with the shut-off valve 11, by means of a screw able ring unit 13. According to one first solution, the shut-off valve 11 comprises a body 14 configured with an inlet 15 for the fluid, for example connectable to the return line of a heating plant, and with an outlet 16 for the fluid, for example connectable to the inlet side of a heat exchanger of a commom wall-mounted boiler.
More precisely, as shown in the example of figures 2 and 3 and in the details of the remaining figures 4 and 5, the shut-off valve 11 comprises a valve body 14 defining a closing cap of the filter device 10, configured with an inlet 15 for the fluid oriented orthogonally to the longitudinal axis of the filter device 10, and with the outlet 16 for the fluid oriented parallely to said longitudinal axis.
The inlet 15 extends in a short duct 17 ending with a partition wall defining a sealing seat 18 for a shutter 20, housed in one inlet chamber 19 opened downwards and towards a cylindrical mesh filter in a quiet zone of the underlyng filter device 10.
Inside the inlet chamber 19 of the shut-off valve 1 1, a shutter 20 is provided fastened to a shaft 21 which is operatively connected to a knob 22 to be manually operated between an opening condition, shown in the figure 2, and a closing condition against the sealing seat 18, by simply screwing the knob 22. The inlet 15 of the shut-off valve 11 communicates fluidically with the outlet 16 through the filter device 10, as explained below.
In particular the filter device 10 comprises a cup-shaped hollow body 23 of magnetically non-conductive material, e.g. brass, removably connected to the valve body 14 through the ring unit 13; the cup-shaped body 23 is closed by a bottom wall 23'.
The bottom wall 23' of the cup- shaped body 23, in the example of figure 2, is slanted towards the side drain outlet 12, comprising a ball valve 24 which can be manually actuated by a control pin 24', figure 3, for rotating between a closing condition and an opening condition of the drain outlet 12. The filter device 10 is configured such as to allow fluid circulation in a condition of non turbolence between the inlet 15 and the outlet 16 of the shut-off valve 14; in particular it is configured such as to provide a quieting zone which extends longitudinally in the cup-shaped body 23, where the turbulent and vortical motion of the entering fluid is significantly reduced; thereby it is allowed both an efficient mechanical filtration action of non ferrous or non magnetically sensitive particles which make up for part of the polluting substances suspended in the fluid, as well as an efficient action of magnetic separation of ferrous particles transported by the thermal fluid, filtration and magnetic separation actions which conjointly occur along a central filtration chamber 27 longitudinally extending in the quieting zone of the cup-shaped body 23 of the filter device 10.
In this regard, the filter device 10 comprises a mechanical filter, composed of a cylindrical mesh filter 25 which longitudinally extends in the cup-shaped body 23 between the edge 16' of the inlet chamber 19 of the valve body 14 and a lower support element 26 (shown in figure 4) positioned over the bottom wall 23' of the cup-shaped body 23, near the side drain outlet 12.
The cylindrical mesh filter 25 substantially extends across the whole lenth of the cup- shaped body 23, extending further until it abut against the peripheral edge 16' of the inlet chamber 19 of the valve body 14.
The cylindrical mesh filter 25 has a diameter lower than the inner diameter of the cup-shaped body 23; thereby the cylindical mesh filter divides the cup-shaped body 23 in a central filtration chamber 27 in fluidic communication with the chamber 19 and the inlet 15 of the valve body 14, and an annular chamber 28 arranged peripherally and coaxially to the central chamber 27.
The connecting annular chamber 28, as shown in figure 3, is therefore in fluidic communication both with the central chamber 27, through the cylindrical mesh filter
25, and with the outlet 15 through chamber 29.
The cylindrical mesh filter 25 is arranged coaxially with respect to a support element 26 which, as shown in figure 4, comprises an upper annular element 30 and a lower annular element 31, axially spaced apart and connected by a plurality of longitudinal fins 32. The upper annular element 30 has an inner diameter substantially corrsponding to the external diameter of a tubular seat 33 housing a magnetic core 34, as shown in figure 2 and explained hereinafter. Fins 32 extend downwards, beyond the lower annular element 31 to abut against the slanted bottom wall 23' of the cup-shaped body 23, in the assembled condition of figure 1.
The annular element 31 is positioned near the side drain outlet 12, and is configured with a conical surface radially extending from the outer longitudinal edge of the fins 32, against the inner surface of the cylindrical wall of the cup-shaped body 23; a decanting zone for the polluting substances is provided between the slanted bottom wall 23' of the cup-shaped body 23 and the annular element 31.
Always in figure 1 it can be noted that the lower annular element 31 has an external diameter equal to the internal diameter of the cup-shaped body 23, and an internal diameter slightly lower than the diameter of the tubular mesh filter 25; thereby the annular flange 31, in addition to supporting the mesh filter 25, defines a wide central opening 3 Γ in communication between the central chamber 27 of the mesh filter 25, and the decanting zone 26', due to the fall down of contaminant substances which are mechanically and magnetically separated from the circulating thermal fluid, falling by gravity, deposit as sludge on the bottom wall 23' of the cup-shaped body 23, wherefrom it can be discharged from time to time through the drain sideoutlet 12, by opening the ball valve 24.
As previously reported, the filter device 10 comprises a magnetic core 34 for separating ferrous particles drawn into circulation by the thermal fluid, along a quiet zone where they are magnetically retained against the external surface of the tubular housing 33.
As shown in figure 1 and in the detail of figure 5, the magnetic core 34 is removably inserted from the outside in one tubular seat 33 which extends from an opening 23 " of the bottom wall 23' of the cup-shaped body, longitudinally in the central chamber 27 of the cylindrical mesh filter 25. The upperly closed tubular seat 33 and subsequently the magnetic core 34 extend longitudinally for a portion substantially equal to or higher than half the length of the cylindrical mesh filter 25. Thereby the mechanical and magnetic filtration occurs along a broad quieting zone delimited by two broad coaxial filtration surfaces; the action of filtration and separation of contaminant substances is thus substantially enhanced, also due to the particular configuration and arrangement of the magnetic core 34 shown in the example of figure 5.
The magnetic core 34 comprises a plurality of annular magnets 35 threaded on a central rod 36 of magnetically non conductive material, for example steel, placing an annular spacer 37 between the contigous annular magnets 34.
Annular magnets 35, spacers 37 and a disk 38 of non magnetic material are threaded and fixed to the central rod 36 by means of two bushes 39 screwed or otherwise fixed to the two ends of the rod 36. As previously reported, the magnetic core 34 is removably housed in an outwardly opened tubular seat 33 through the opening 23" of the bottom wall 23' of the cup- shaped body 23; the magnetic core 34 is retained in its seat 33 by a fork 40 inserted in specific holes of the bottom wall 23'; the two arms of the fork 40 are positioned below the disk 38. In replacement or in alternative to the shown system, the magnetic core 34 may be fixed in a different way, while having the possibility to be axially removed by operating from outside, without opening or removing the whole filter device, while keeping it in function.
The magnetic core 34 can however be configured with one or more permanent magnets 35 however axially or radially magnetized, as far as they are suitable to generate a magnetic field for attracting ferrous particles present in the thermal fluid, whose magnetic flow lines extend into the central chamber 27 of the cylindrical mesh filter 25. Good results were obtained from tests performed by using axially polarized magnetic rings, wherein two contigous magnetic rings have facing magnetic poles with the same polarity N, S as well as by interposing a spacer 37 of ferromagnetic material.
It was noted that by placing magnets 35 with homonymous N or S poles faced and opposite to each other, as well as interposing a spacer 37 of ferromagnetic material between the facing poles of two contigous magnets, a radially extending magnetic filed is obtained, which mostly helps the attraction and separation of ferrous particles from the circulating flow into the central chamber 27 of the filter device, conjointly to the mechanical filtration of the non magnetic particles, along a broad quieting zone for circulation of the thermal fluid.
The use and functioning of the magnetic separator of figure 1, integrated with a fluid shut-off valve, are the following one.
The filter devicelO and shut-off valve 11 assembly represents a functionally and structurally integrated operative unit, wherein the inlet port 15 and the outlet port 16 of the valve 11 can be easily connected to the fittings of a commonly wall-mounted boiler or, more in general to the circuiti of a heating plant. In the illustrated example, the inlet port 15 and the outlet port 16 are oriented in an orthogonal direction, respectively in a direction parallel to the longitudinal axis of the filter material 10; however it is not to be excluded that one or both ports 15 and 16 may have one or any other configuration and/or arrangement with respect to the valve body 14 and the filter device. As the filter device 10 is directly integrated, structurally and fluidically with the valve 11, it is clear that the assembling operations and/or removal of the whole device are extremely simplified.
Furthermore, the particular integrated configuration of the filter device 10 and of the shut-off valve 11, and the presence of a broad quieting zone allow a more efficient filtering action, as mechanical filtration and magnetic separation occur simoultaneously along a substantial portion of the filter length, in absence of strong turbolences in the thermal fluid. Furthermore, the particular configuration of the magnetic core and its arrangement in a housing seat directly immersed in the entering fluid, allow to significantly increase the efficacy of the magnetic separation of ferrous particles drawn by the fluid flowing into the central chamber 27 which, following the removal of the magnetic core 34, fall down by virtue of gravity in the decanting zone 26', where they deposit as sludge on the bottom wall 23' of the cup-shaped body 23.
Regularly and when necessary, after removal of the fork 40 and unthreading from the outside the magnetic core 34, sludge deposited on the bottom 23' of the cup-shaped body 23 can be eliminated by simply washing, by manually opening the drain valve 24. Advantageously the bottom wall 23' is slanted towards the drain outlet 12, thereby facilitating the sludge outflow. When needed, it is possible to remove the whole filter device 10 and unthread or replace the mesh filter 25 from the cup-shaped body 23, simply by unscrewing the ring unit 13 without having to disconnect the body 14 from the shut-off valve 11 from the boiler or from the heating plant.
Referring now to figure 6, a second solution of the filter device 10 integrated with a shut-off valve will be disclosed; in figure 6 the same reference numbers as the preceding figures were used, to indicate similar or equivalent parts.
The sludge magnetic separator 6 comprises a filter device 10 integrated with a valve device 11 manually operable for stopping the thermal fluid circulation when maintenance activities are to be performed in the heating plant or in the wall- mounted boiler.
In this case also the filter device 10 comprises a cup-shaped body 23 having a bottom wall 23' slanted towards a side drain outlet 12 provided with a normally closed ball valve 24, manually operable for draining sludge deposited on the bottom wall 23', in the decanting zone 26'.
The cup-shaped body 23, by means of the screwable ring unit 13, is removably linked to a lid or closure body 14 configured with an inlet port 15 and an outlet port 16 for the thermal fluid.
The body 14 of the closure lid, integrated with the valve device 11, is configured again with a first chamber 19 connected with the inlet port 15, and with a second chamber 29 connected with the outlet port 16.
Furthermore in figure 6 the body 14 of the closure lid is integrated with a shut-off valve 41 of the ball type manually operable for opening and closing by acting on a control lever 42.
The ball valve 41 can be otherwise configured to allow the fluid entrance in one direction parallel to the longitudinal axis of the filter device 10, as shown, or in any other direction. The filter device 10 of figure 6 is at all similar to the filter device 10 of the preceding figures; thus, also in the example of figure 6 the filter device 10 comprises a cylindrical mesh filter 25 longitudinally extending in a quieting zone of the cup- shaped body 23, wherein the cylindrical mesh filter 25 and the cup- shaped body 23 define again a central filtration chamber 27 fluidically connected to the first chamber 19 of the closure lid 14, and an annular chamber 28 connected fluidically to the central chamber 27 through the cylindrical filter 25, respectively fluidically connected to the second chamber 29 of the closure body or lid 14.
An elongated magnetic core 34, at all similar to the previously described one, is inserted in a tubular seat 33 axially extending into the cup- shaped body 23.
The cup- shaped body 23 at the bottom wall 23' comprises a side drain outlet 12 provided with a normally closed valve 24; the bottom wall 23' of the cup-shaped body 23 is slanted towards the side drain outlet 12 to ease draining sludge which deposited on the bottom of the cup-shaped body by opening the drain valve 24, while keeping in function the magnetic separator and the heating plant.
Similarly to example of figures 1-5 the magnetic core 34 is removably threaded from the outside, into a tubular seat 33 closed inwards, which extends into the central filtration chamber 27 from an opening 23" of the bottom wall 23' of the cup-shaped body 23. A support element 26 for the mesh filter 25 is configured with a first upper annular element 33 connected by a plurality of longitudinal fins 32 to a second annular element 31 radially extending against the inner surface of the cup- shaped body 23.
It is specified that in the case of figure 6 the magnetic core 34 is provided with two rings 43 of elastomeric material, for press-fitting the magnetic core 34 into the housing tubular seat 33.

Claims

1. A sludge separator for heating plants comprising, in combination, a filter device (10) integrated with a shut-off valve device (11), for a thermal fluid, wherein the filter device (10) comprises:
a cup-shaped body (23) removably connected to a valve body or closing cap (14) having an inlet port (15) and an outlet port (16) for a thermal fluid; and
an elongated magnetic core (34) threaded into a tubular seat (33) axially extending in the cup-shaped body (23),
wherein the valve body or closing cap (14) is configured with a first chamber
(19) connected to the inlet port (14), and with a second chamber (29) connected to the outlet port (15); and
wherein the filter device (10) comprises a cylindrical mesh filter (25) longitudinally extending in a quieting zone of the cup- shaped body (23), the cylindrical mesh filter (25) and the cup-shaped body (23) defining a central filtration chamber (27) fluidically connected to the first chamber (19) of the valve body or closing cap (14), and an annular chamber (28) fluidically connected to the central chamber (27) through the cylindrical mesh filter (25), respectively fluidically connected to the second chamber (29) of the valve body or closing cap (14);
characterized in that:
the cup- shaped body (23), at a bottom wall (23'), comprises a drain side outlet (12) provided with a closing valve (24), wherein the bottom wall (23') of the cup- shaped body (23) is slanted towards the drain side outlet (12); and
in which the magnetic core (34) is removably threaded from the outside, into a tubular seat (33) that extends from an opening at the bottom wall (23') of the cup- shaped body (23), and into the central filtration chamber(27).
2. The sludge separator according to claim 1, characterised in that a shutter (20) for the interruption of the incoming fluid, movable between an opening position and a closing position of a sealing seat (18), is housed in the first chamber (19) of the valve device (11).
3. The sludge separator according to claim 1, characterised in that the cylindrical mesh filter (25) longitudinally extends in the cup-shaped body (23), between an edge (15') of the first chamber (19) of the valve body or closing cap (14), and a support element (26) inside the cup-shaped body (23) of the filter device (10). 4. The sludge separator according to claim 3, characterised in that the support element (26) is configured with a conically-shaped first annular element (30) and with a second annular element (31), axially spaced, joined by a plurality of fins (32) that longitudinally extend towards the bottom wall (23') of the cup- shaped body (23). 5. The sludge separator according to claim 1, characterised in that the magnetic core (34) comprises a plurality of axially aligned magnetic rings (35).
6. The sludge separator according to claim 5, characterised in that contiguous magnetic rings (35) are axially polarized, alternatively in opposite directions from one another.
7. The sludge separator according to one or more claims 5 to 6, characterised in that the magnetic rings (35) are threaded on a central support rod (36) and are retained by retaining elements (39) fixed at the ends of the central rod (36).
8. The sludge separator according to one or more preceding claims, wherein the magnetic core (34) is housed in the tubular seat (33) and removable from the outside through an opening of the bottom wall (23') of the cup-shaped body (23), characterized by comprising retaining means (38, 40) for the magnetic core (34), which are engageable with and disengageable from the cup-shaped body (23).
9. The sludge separator according to claim 1, characterised in that the valve device (11) consists in a ball valve (41) integrated in the inlet port (15) of the closing cap of the cup-shaped body (23).
PCT/IB2018/053173 2017-05-09 2018-05-08 Magnetic sludge separator for heating plants WO2018207083A1 (en)

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IT102017000050230A IT201700050230A1 (en) 2017-05-09 2017-05-09 MAGNETIC SEPARATOR WITH INCORPORATED STOP VALVE, FOR HEATING SYSTEMS.
IT102017000050230 2017-05-09

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CN110372071A (en) * 2019-08-02 2019-10-25 江苏天鑫中冶环保设备有限公司 A kind of mine water for underground coal mine Magneto separate water body purification Processes and apparatus
IT201800020302A1 (en) 2018-12-20 2020-06-20 Rbm Ibox S R L FILTER FOR THE TREATMENT OF A FLUID IN A PIPE OF A HEATING AND / OR COOLING SYSTEM, IN PARTICULAR OF A DOMESTIC AND / OR INDUSTRIAL TYPE
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IT201900003221A1 (en) * 2019-03-06 2020-09-06 B&B Rappresentanze S R L COMPACT FILTERING DEVICE FOR THERMAL SYSTEMS
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IT201900006940A1 (en) * 2019-05-17 2020-11-17 Aquamax San Srl PERFECTED COMPACT MAGNETIC SEPARATOR.
IT201900010920A1 (en) * 2019-07-04 2021-01-04 Fimcim Spa SOLID PARTICLE SEPARATOR, PROCEDURE FOR THE REALIZATION OF SAID SEPARATOR, METHOD FOR THE SEPARATION OF SOLID PARTICLES FROM A FLUID BY MEANS OF SAID SEPARATOR AND METHOD FOR UNLOADING SOLID PARTICLES FROM SAID SEPARATOR
EP3831458A1 (en) 2019-12-02 2021-06-09 Ci.Fa. S.r.l. Improved water filter
EP3845287A1 (en) * 2019-12-31 2021-07-07 Caleffi S.p.A. Hydraulic valve with magnet and filter
IT202000009820A1 (en) * 2020-05-05 2021-11-05 Hydronass S R L MAGNETIC SEPARATION DEVICE FOR SEPARATING FERROUS MATERIAL CONTAINED IN A LIQUID CIRCULATING IN A HEATING CIRCUIT
US20220163131A1 (en) * 2020-11-26 2022-05-26 Caleffi S.P.A. Antifreeze valve unit
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CN115124119A (en) * 2022-07-12 2022-09-30 江西艾芬达暖通科技股份有限公司 Vertical magnetic filter
CN115536203A (en) * 2022-09-30 2022-12-30 江西艾芬达暖通科技股份有限公司 Magnetic filter
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EP4299158A1 (en) * 2022-06-27 2024-01-03 REF Power S.r.l. Oil filtration device, especially for inlet oil-lines for screw compressors, and compression unit including such a filtration device
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US11826679B2 (en) 2018-12-20 2023-11-28 R.B.M. S.P.A. Filter for the treatment of a fluid in a heating and/or cooling system
IT201800020302A1 (en) 2018-12-20 2020-06-20 Rbm Ibox S R L FILTER FOR THE TREATMENT OF A FLUID IN A PIPE OF A HEATING AND / OR COOLING SYSTEM, IN PARTICULAR OF A DOMESTIC AND / OR INDUSTRIAL TYPE
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IT201900006940A1 (en) * 2019-05-17 2020-11-17 Aquamax San Srl PERFECTED COMPACT MAGNETIC SEPARATOR.
IT201900010920A1 (en) * 2019-07-04 2021-01-04 Fimcim Spa SOLID PARTICLE SEPARATOR, PROCEDURE FOR THE REALIZATION OF SAID SEPARATOR, METHOD FOR THE SEPARATION OF SOLID PARTICLES FROM A FLUID BY MEANS OF SAID SEPARATOR AND METHOD FOR UNLOADING SOLID PARTICLES FROM SAID SEPARATOR
EP3760314A1 (en) * 2019-07-04 2021-01-06 Fimcim S.P.A. Solid particle separator, method of separating solid particles from a fluid by said separator and method of discharging solid particles from said separator
CN110372071A (en) * 2019-08-02 2019-10-25 江苏天鑫中冶环保设备有限公司 A kind of mine water for underground coal mine Magneto separate water body purification Processes and apparatus
EP3831458A1 (en) 2019-12-02 2021-06-09 Ci.Fa. S.r.l. Improved water filter
EP3845287A1 (en) * 2019-12-31 2021-07-07 Caleffi S.p.A. Hydraulic valve with magnet and filter
IT202000009820A1 (en) * 2020-05-05 2021-11-05 Hydronass S R L MAGNETIC SEPARATION DEVICE FOR SEPARATING FERROUS MATERIAL CONTAINED IN A LIQUID CIRCULATING IN A HEATING CIRCUIT
US20220163131A1 (en) * 2020-11-26 2022-05-26 Caleffi S.P.A. Antifreeze valve unit
US11920694B2 (en) * 2020-11-26 2024-03-05 Caleffi S.P.A. Antifreeze valve unit
EP4011476A1 (en) 2020-12-11 2022-06-15 Euroacque S.r.l. Device for filtering a liquid, particularly for hydraulic circuits of heating systems
US11707705B2 (en) 2021-05-05 2023-07-25 Nibco Inc. Multi-function hydraulic separator
EP4299158A1 (en) * 2022-06-27 2024-01-03 REF Power S.r.l. Oil filtration device, especially for inlet oil-lines for screw compressors, and compression unit including such a filtration device
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