Salt dispensing equipment for hydraulic systems

Abstract

The present invention relates to a barrel component of an apparatus for dispensing salt for a hydraulic system, wherein the dispensing apparatus comprises: a connecting component having a first connecting member, a second connecting member and a coupling collar, the coupling collar being in fluid communication with the first connecting member and / or the second connecting member; and a container component which can be coupled to the connecting component to define, together with the connecting component, an internal compartment, the coupling collar facing the internal compartment. The barrel component comprises a tubular outer wall which internally delimits an operating chamber and, together with the container component, defines a cavity outside the outer wall. The operating chamber is divided into a first chamber and a second chamber by a partition wall and has at least a first channel portion and a second channel portion, the first channel portion setting the first chamber to be in fluid communication with the second chamber, the second channel portion setting the second chamber to be in fluid communication with the first chamber or the cavity. The barrel component also comprises a pressure reducing device designed to cause a pressure drop in the liquid passing through the pressure reducing device.

Description

Technical Field

[0001] The present disclosure relates to a cartridge component for an apparatus for dosing salt, in particular phosphate, for use in hydraulic systems and especially in heating systems. Background Art

[0002] Currently, in the field of heating systems it is known to connect a phosphate dosing device to a heating system.

[0003] The device has the function of gradually releasing sodium and potassium phosphates into the water flowing through the system, which prevents the formation of calcium carbonate deposits, commonly known as scale, inside the pipes of the system and / or equipment associated with the pipes, such as, for example, inside water heating boilers.

[0004] Currently known phosphate dosing devices comprise an interface or connecting member provided with two or three connections designed to be connected to a corresponding number of pipes of the system by means of ring nuts.

[0005] In the version with three connectors, the first and second of the connectors operate in a functionally alternative manner and are arranged with their extension axes at 90° to one another.

[0006] The axis of the first connector is aligned with the axis of the third connector, while the axis of the second connector is arranged at 90° relative to the axis of the third connector to allow a straight or elbow connection of the dispensing device to the system.

[0007] The interface has a cup connected thereto by means of a fixing ring nut, the cup cooperating with the interface to delimit an internal compartment inside which, during use, a phosphate element, ie a sodium or potassium phosphate element, is housed.

[0008] These phosphate elements are housed inside a chamber which, together with the wall of the cup, defines a cavity in fluid communication with the first and second connections and a channel in fluid communication with the third connection, and vice versa, so that during use, water entering the dispensing device from the first or second connection to reach the third connection and exit must pass through the phosphate elements.

[0009] In particular, the tubular elastic element has one end connected to a tubular collar extending from the interface and in hydraulic communication with the first and second connectors or with the third connector.

[0010] The greater the flow rate of water through the phosphate element, the greater the diffusion of the phosphate element within the system.

[0011] Improvements may be made to the known phosphate dosing device because, depending on the actual operating conditions of the system in which it is installed, it has proven to be inefficient in performing accurate dosing. Summary of the Invention

[0012] The problem underlying the present invention is to improve the dosing of phosphates in hydraulic systems and in particular heating systems.

[0013] The object of the cartridge component according to the invention for a salt dosing device for a hydraulic system is therefore to solve this problem.

[0014] In view of this task, the present invention has the object of proposing a cartridge member for a salt dosing device for a hydraulic system, which cartridge member is able to dose salt in a liquid flow passing through the cartridge member in a manner proportional to the rate of said flow.

[0015] Another object of the present invention is to provide a cartridge member for a salt dosing device for a hydraulic system which allows for automatic dosing in proportion to the flow rate of the fluid passing through the cartridge member, ie without the need for operator adjustment.

[0016] A further object of the present invention is to propose a cartridge member for a salt dosing device for a hydraulic system which also allows the removal of impurities from the water flow passing through the cartridge member.

[0017] This task, as well as these and other objects which will become clearer hereinafter, are achieved by a cartridge member for a salt dosing device for a hydraulic system according to the invention.

[0018] Further features and advantages of the invention will emerge more clearly from the description of a preferred, but not exclusive, embodiment of a salt dosing device for a hydraulic system according to the invention, which is illustrated in the accompanying set of figures listed below, which are provided solely by way of non-limiting example, as embodiments of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A side view of a salt dosing device according to the invention is shown.

[0020] Figure 2 A cross-sectional view of a salt dispensing device including a cartridge member according to an embodiment of the present invention is shown.

[0021] Figure 3 A cross-sectional view of a barrel member according to an embodiment of the present invention is shown.

[0022] Figure 4 and Figure 5 A schematic cross-sectional view of a salt dosing device according to the invention is shown.

[0023] Figure 6 Shown according to Figure 4 and Figure 5 Schematic exploded cross-sectional view of a cartridge component of a dispensing device.

[0024] Figure 7 Shown according to Figure 4 and Figure 5 Schematic partial cross-sectional side view of a variant of the dispensing device.

[0025] Figure 8 and Figure 9 Shown according to Figure 6 Possible variations of the components of the barrel member.

[0026] Figure 10 A schematic cross-sectional side view of a variant of the dispensing device according to the invention is shown. DETAILED DESCRIPTION

[0027] With reference to said figures, 100 denotes as a whole an apparatus for dosing salts, preferably phosphates and potassium phosphates, capable of preventing the formation of calcium carbonate deposits inside the pipes of the system.

[0028] The dosing system 100 comprises a connecting member 20 which is configured to connect the dosing device 100 to a hydraulic system, in particular a heating system.

[0029] The connection member 20 includes at least one first connection piece 21 and at least one second connection piece 22 in addition to a coupling collar 23 , and the coupling collar 23 is in fluid communication with the at least one first connection piece 21 or the at least one second connection piece 22 .

[0030] The coupling collar 23 is arranged to face the interior of the dispensing device 100. The connecting member 20 may further include a third connecting member 21a, which is preferably arranged perpendicular to the first connecting member 21 or the second connecting member 22. In other words, the axis of one connecting member, for example, the axis of the first connecting member 21, may be aligned with the axis of the second connecting member 22, while the axis of the third connecting member 21a may be transverse relative to the axes of the first connecting member 21 and the second connecting member 22, for example, arranged at 90° relative to the axes of the first connecting member 21 and the second connecting member 22, to allow the dispensing device 100 to be connected to the system in a straight line or in an elbow-type connection.

[0031] The first, second and third connectors 21, 22, 21a may be arranged at 90° intervals to allow a straight connection of the dispensing device 100 to the hydraulic system or alternatively an elbow connection.

[0032] The first connector 21, the third connector 21a and / or the second connector 22 may be provided with a stopcock 40 to block the first connector 21, the third connector 21a and / or the second connector 22, thereby regulating the flow of fluid from the system through the dispensing device 100 or preventing the flow of fluid from the system through the dispensing device 100.

[0033] Each connection piece 21 , 21a , 22 is configured to be connected to a pipe of the system, for example by means of a ring nut.

[0034] The first connector 21, the third connector 21a and / or the second connector 22 may be provided with a stopcock 40 to block the first connector 21, the third connector 21a and / or the second connector 22, thereby regulating the flow of fluid from the system through the dispensing device 100 or preventing the flow of fluid from the system through the dispensing device 100.

[0035] The dispensing device 100 further comprises a container member 30, for example in the form of a cup, which preferably has a substantially conical or cylindrical extension and which can be coupled to the connecting member 20 so as to delimit, together with said connecting member 20, an inner compartment V, with the connecting collar 23 facing this inner compartment V. The container member 30 can be connected to the connecting member 20, for example, by means of an annular nut element 50 which can be screwed together with the connecting member 20 in order to hold the flange 31 of the container member 30 together with the connecting member.

[0036] The dispensing device 100 further comprises a cartridge member 10, 210, which is preferably housed inside the internal compartment V. More specifically, the cartridge member 10, 210 comprises a preferably tubular outer wall 11, which delimits an operating chamber 11c, 211a inside the outer wall 11. The outer wall 11 extends from a connecting portion of the outer wall 11, wherein the connecting portion is configured to be coupled to the coupling collar 23. In this way, the operating chamber 11c is arranged in fluid communication with the coupling collar 23.

[0037] In particular, the outer wall 11 may also include a top end 211b or connecting portion 11a, which is configured to be coupled to the coupling collar 23 so as to place the operating chamber 11c, 211a in fluid communication with the coupling collar 23, and therefore with the first connection piece 21, for example by means of at least one operating opening 211a.

[0038] Preferably, the coupling collar 23 and the outer wall 11 are configured to be coupled together in a leak-proof form-fitting manner, more specifically, the coupling collar 23 and the top end 211b or the connecting portion 11a of the outer wall 11 are configured to be coupled together in a leak-proof form-fitting manner.

[0039] At least one gasket 11 b may be arranged between the coupling collar 23 and the outer wall 11 to ensure leakage prevention.

[0040] Therefore, the fluid flowing between the first connection 21 and the second connection 22 can flow into the operation chambers 11 c , 211 a of the cylinder members 10 , 210 .

[0041] The outer wall 11 can also be configured to be housed within the interior compartment V of the dispensing device 100 and to define, together with the container member 30 and / or the connecting member 22, a cavity (I) outside the outer wall 11. More specifically, the cavity I is disposed between the outer wall 11 of the cartridge member 10, 210 and the wall of the container member 30. Preferably, the outer wall 11 is generally cylindrical and coaxial with respect to the container member 30, so as to define, together with the container member 30, an annular cavity I surrounding the outer wall 11.

[0042] The connecting portion 11a or the top end portion 211b can be shaped so that it can be coupled to the coupling collar 23 of a conventional dispensing device, so that the tubular elastic element typically provided according to the above-mentioned prior art can be replaced with the cartridge member 10. In this way, the cartridge member 10, 210 can convert a conventional device into a dispensing device according to the present invention in a simple and quick manner without requiring adjustments to the conventional dispensing device.

[0043] Obviously, the cartridge member 10, 210 according to the present invention can be produced in a variety of models that differ from one another in the shape and size of the cartridge member 10 itself and / or the connecting portion 11a, so as to be suitable for conventional dispensing devices.

[0044] The outer wall 11 has a main channel portion 17 that can be penetrated by liquid, for example, a perforated or fluid-permeable portion, so as to place the operating chamber 11c, 211a in fluid communication with the cavity 1. In this way, the fluid entering the barrel member 10, 210 can flow to the outside of the outer wall 11, in particular, to the cavity 1, through the main channel portion 17.

[0045] The container member 30 is configured such that the second connector 22 is in fluid communication with the internal compartment V, and in particular such that the second connector 22 is in fluid communication with the cavity I. Thus, a fluid flowing between the first connector 21 and the second connector 22 and thereby passing through the cartridge member 10, 210 can flow through the operating chamber 11c, 211a, the fluid entering the operating chamber 11c, 211a from the main channel portion 17 and exiting the operating chamber 11c, 211a, for example, through the operating opening 211c, for example, as Figure 5, or vice versa, depending on the flow direction of the liquid inside the system to which the dispensing device 100 is connected during operation. In more detail, the fluid entering the barrel member 210 - which enters from the second connection piece 22 - can flow to the outside of the outer wall 11, in particular into the chamber I, and then enter the operating chambers 11c, 211a via the main channel 17, and flow out from the operating chambers 11c, 211a towards the first connection piece 21, for example, through the at least one operating opening 211c.

[0046] In addition, preferably, the cartridge member 10, 210 includes a filter 18a that engages the main channel portion 17 to retain particulate matter transported by the liquid passing through said portion. Preferably, the filter 18a is a mesh filter, preferably a metal filter, positioned along said main channel portion 17.

[0047] In particular, the outer wall 11 can be generally cylindrical, and the main channel portion 17 can be a portion of the outer wall 11 that is distal to the top end 221b or the connecting portion 11a, and the main channel portion 17 can have a plurality of openings extending circumferentially around the outer wall 11, with the filter 18a being arranged opposite the main channel portion 17. The number, size, and position of the openings in the main channel portion 17 can vary depending on the specific implementation requirements of the present invention. For example, for lower liquid flow rates, a main channel portion 17 can be provided with a series of openings extending circumferentially around the outer wall 11, while for higher flow rates, a main channel portion 17 can be provided with a series of openings extending circumferentially around the outer wall 11.

[0048] The cylindrical shaft 10, 210 may further include a partition wall 12 connected to the outer wall 11 to divide the operating chamber 11c, 211a into two further chambers or regions. In particular, the partition wall 123 divides the operating chamber 11c into a second chamber 14 and a first chamber 13 preferably in fluid communication with the cavity 1 via the main channel portion 17.

[0049] More specifically, the second chamber 14 may be configured to contain salt to be dispensed and released into the system.

[0050] Furthermore, the partition wall 12 has at least one first passage portion 15 that places the first chamber 13 in fluid communication with the second partial chamber 14. In this manner, the partition wall 12 divides the operation chamber 11 c of the cylinder member 10, 210 into the first chamber 13 and the second chamber 14, respectively, and the partition wall 12 has the first passage portion 15 so that the chamber 13 and the chamber 14 are in fluid communication.

[0051] Special reference Figures 4 to 10In the illustrated embodiment, the first channel portion may place the first chamber 13 in fluid communication with the first region 214 a of the second chamber 14 .

[0052] In addition, the barrel member 10 has a second channel portion 16, which is alternatively provided in the partition wall 12 to provide the second chamber 14 to be fluidically connected to the first chamber 13, or the second channel portion 16 is provided in the outer wall 11 to provide the second chamber 14 to be fluidically connected to the cavity I.

[0053] The barrel member 10 further comprises pressure reducing devices 18a, 18b configured to induce a pressure drop in the liquid passing through the pressure reducing devices 18a, 18b. The positioning of the pressure reducing devices 18a, 18b in the barrel member 10 may vary depending on the positioning of the second channel portion 16.

[0054] In addition, preferably, the pressure reducing device 18a, 18b, 110 may include a filter 18a that retains particulate matter conveyed by the liquid passing through the filter 18a. In combination or alternatively, the pressure reducing device 18a, 18b, 110 may include a restriction portion 18b having a protrusion 12a extending from the wall of the barrel member 10.

[0055] In particular, according to the first embodiment of the cartridge member 10 of the present invention, the second channel portion 16 is arranged in the outer wall 11 to place the second chamber 14 containing salt in fluid communication with the cavity 1.

[0056] More specifically, according to this embodiment, the outer wall 11 of the barrel member 10 has an end portion 11d, which is at the distal end relative to the connecting portion 11a of the outer wall 11. In particular, the outer wall 11 extends from the connecting portion 11a to the end portion 11d along the extension direction L. When the barrel member 10 and the container member 30 themselves are connected with the connecting member 20, the end portion 11d of the outer wall 11 is designed to face the bottom of the container member 30. In addition, according to this embodiment, the second channel portion 16 is located in the end portion 11d. Therefore, in use, the second chamber 14 to be accommodated in the salt to be distributed in the system is arranged to be at the distal end relative to the connecting portion 11a of the outer wall 11, or points to the bottom of the container member 30. In addition, preferably, the partition wall 12 extends transversely relative to the extension direction L. In particular, the partition wall 12 is arranged between the distal end portion 11d of the outer wall 11 and the connecting portion 11a of the same outer wall 11.

[0057] Furthermore, according to this embodiment, the pressure reducing means 18a, 18b may include a filter 18a. In combination with the filter 18a or in place of the filter 18a, the pressure reducing means may include a restriction having at least one protrusion 12a projecting from the outer wall 11 toward the outside of the outer wall 11, and / or vice versa, to form a restriction in the cavity 1 when the cartridge member 10 is incorporated into the dispensing device 100.

[0058] In this way, along extension direction L, barrel member 10 has first chamber 13, partition wall 12 and second chamber 14 in sequence, and this first chamber 13 has main channel portion 17 that is engaged with pressure reducing device 18a, 16b.Therefore, the fluid part flowing in described barrel member 10 interior can leave first chamber 13 toward chamber 1 via main channel portion 17, thereby pass pressure reducing device 18a, 18b.This pressure reducing device 18a, 18b produces pressure difference in the fluid passing through this pressure reducing device 18a, 18b, so that fluid part passes through the inside of second chamber 14 that salt is accommodated by first channel portion 15.This fluid part flowing in second chamber interior can then flow into chamber 1 by second channel portion 16.Therefore, the fluid part flowing in second chamber 14 interior is parallel on hydraulic pressure with the fluid part passing through main channel portion 17.In addition, the fluid part flowing in second chamber 14 interior is directly proportional to the flow velocity of the fluid flowing between first connector 21 and second connector 22. In this way, a release of salt can be achieved which is proportional to the flow rate of the fluid flowing in the dosing device 100 .

[0059] According to another embodiment, this embodiment differs from the first embodiment in that a second channel portion 16 of the barrel member 10 is defined in the partition wall 12 to place the first chamber 13 in fluid communication with the second chamber 14. Therefore, in particular, according to this embodiment, both the first channel portion 15 and the second channel portion 16 place the first chamber 13 and the second chamber 14 of the barrel member 10 in fluid communication.

[0060] Furthermore, according to this embodiment, the pressure reduction device 18 a , 18 b is located in the first chamber 13 , in particular between the first channel portion 15 and the second channel portion 16 .

[0061] Preferably, these pressure relief devices 18a, 18b include a restriction portion 18b. The restriction portion 18b includes at least one protrusion 12a that protrudes from the partition wall 12 toward the outer wall 11. In combination or alternatively, the restriction portion 18b may include at least one protrusion that protrudes from the outer wall 11 toward the partition wall 12. In this way, the restriction portion 18b is formed in the gap channel P defined between the outer wall 11 and the partition wall 12.

[0062] In this way, along the gap channel P, between the connecting portion 11a of the outer wall 11 and the main channel portion 17, preferably located at the distal end relative to the connecting portion 11, there are the following in sequence: the first channel portion 15, the limiting portion 18b and the second channel portion 16.

[0063] Preferably, the partition wall 12 has a tubular portion extending between the connecting portion 11a of the outer wall 11 and the main channel portion 17. Preferably, the tubular portion is coaxial with respect to the preferably cylindrical outer wall 11. Thus, the gap channel P is a region having an annular cross-section arranged between the partition wall 12 and the outer wall 11 of the barrel member 10, in particular, between the tubular portion of the partition wall 12 and the outer wall 11 of the barrel member 10.

[0064] Furthermore, preferably, according to this embodiment, first channel portion 15 opens into first region 14a of second chamber 14, and partition wall 12 includes channel 19 in fluid communication with second channel portion 16. Channel 19 also includes a mouth that opens into second region 14b of second chamber 14. Specifically, first region 14a and second region 14b of second chamber 14 are separated and partitioned by a receiving region 14c configured to receive the salt to be dispensed. In other words, second chamber 14 includes an inner wall defining channel 19 in fluid communication with second channel portion 16.

[0065] Therefore, the result is that, before encountering the pressure reducing devices 18a, 18b, the fluid that enters the cylinder member 10 via the connecting portion 11a of the outer wall 11 enters the first chamber 13 and flows inside the gap passage P defined between the outer wall 11 and the partition wall 12. The pressure reducing devices 18a, 18b create a pressure difference in the fluid passing through the pressure reducing devices 18a, 18b. Therefore, this causes the fluid portion that flows into the gap passage P to enter the inside of the second chamber 14, particularly into the first region 14a of the first chamber 14. This fluid portion flows parallel to the fluid portion that passes through the pressure reducing device until it reaches the accommodating portion 14c of the first chamber 14 and then reaches the second region 14b of the second chamber 14. At this point, the fluid portion that arrives from the second region 14b of the second chamber 14 enters the passage 19 and, before flowing out to the cavity I through the main channel portion 17, leaves via the second channel portion 16 and enters the gap passage P. The portion of fluid entering the second chamber 14 flows hydraulically in parallel with the portion of fluid passing through the pressure-relief devices 18a, 18b.

[0066] Special reference Figures 4 to 10 , which show by way of example further embodiments of the invention provided in accordance with the following non-limiting description.

[0067] The following mainly, but not exclusively, shows the differences with respect to the above-described embodiment. In addition, in the continued description, the same reference numerals are used to denote structural elements corresponding to the structural elements described so far.

[0068] Generally speaking, for example Figures 4 to 10 The barrel member 210 of the salt dispensing device for a hydraulic system shown in FIG comprises:

[0069] a connecting member 20 comprising at least one first connecting piece 21 and at least one second connecting piece 22 and a coupling collar 23 in fluid communication with the at least one first connecting piece 21 or the at least one second connecting piece 22;

[0070] A containing member 30 which can be coupled to the connecting member 20 so as to define, together with the connecting member 20 , an internal compartment V, the coupling collar 23 facing this internal compartment V.

[0071] The barrel member 210 includes:

[0072] a tubular outer wall 11 defining an operating chamber 211 a on its interior and extending from a top end 211 b thereof, the top end 211 b being configured to couple with the coupling collar 23 so as to place the operating chamber 211 a in fluid communication with the coupling collar 23; the outer wall 11 being configured to be housed inside the inner compartment V of the dispensing device 100 and defining, together with the container member 30, a cavity I on the exterior of the outer wall 11;

[0073] - a partition wall 12 connected to the outer wall 11 to divide the operating chamber 211a into a first chamber 13 and a second chamber 14, wherein the second chamber 14 is configured to accommodate salt to be dispensed, or the second chamber 14 is configured to open into a receiving portion of the inner compartment designed to accommodate salt to be dispensed, wherein the second chamber 14 has at least one first channel portion 15, which places the first chamber 13 in fluid communication with the second chamber 14.

[0074] The outer wall 11 has a main channel portion 17 through which liquid can pass, which sets the first chamber 13 in fluid communication with the cavity I.

[0075] The cartridge member 210 has at least one second channel portion 16 defined in the partition wall 12 to place the second chamber 14 in fluid communication with the first chamber 13. The cartridge member 210 includes a pressure reducing device 110 designed to induce a pressure drop in the liquid passing through the pressure reducing device 110. The pressure reducing device 110 is located within the first chamber 13, between the first channel portion 15 and the second channel portion 16, to induce a pressure difference in the fluid passing through the dispensing device 100 along the first channel portion 15 and the second channel portion 16 during operation, thereby generating a flow rate of the liquid through the second chamber 14, wherein the flow rate is proportional to the total amount of liquid passing through the dispensing device 100 during operation.

[0076] In detail, with particular reference to Figure 6 The barrel member 210 includes an outer wall 11 which is preferably tubular and defines an operating chamber 211 a therein.

[0077] The outer wall 11 is configured to couple with the coupling collar 23 to place the operating chamber 211 a in fluid communication with the coupling collar 23 and, thus, with the first connector 21 .

[0078] Special reference Figure 8 or Figure 7 and Figure 9 , a filter may be incorporated into the main channel portion 17, e.g. Figure 8 Alternatively, the filter may form a separate, e.g. cylindrical, element which surrounds and / or lines the main channel portion 17 or the outer wall 11, e.g. Figure 7 and Figure 9 As shown in .

[0079] In particular, the filter 18a may be fixed to the coupling collar 23 to be fixed to the connection member 20, for example by means of a form fit relative to an outer surface of the coupling collar 23, wherein the top end 211b of the outer wall 11 may be coupled to the inner surface of said coupling collar.

[0080] The filter 18 a may also be fixed to the separation spacer 60 , for example, by shape-fitting with an annular recess 60 a around the outer wall 11 , which may be formed in the separation spacer 60 , to couple with the cartridge member 100 .

[0081] Preferably, the filter 18a is a mesh filter, preferably a metal filter, positioned along one or more main channel portions 17 .

[0082] In particular, the outer wall 11 can be roughly cylindrical, and the main channel portion 17 can be formed by a portion of the outer wall 11 that is distal relative to the top end 221b, and the main channel portion 17 has a plurality of openings extending circumferentially around the outer wall 11, and the filter 18 is arranged opposite to the main channel portion 17.

[0083] The number, size, and location of the openings in the main channel portion 17 may vary depending on the specific implementation requirements of the present invention.

[0084] For example, for lower liquid flow rates a main channel portion 17 may be provided having a series of openings extending circumferentially around the outer wall 11, whereas for higher flow rates a main channel 17 may be provided having a plurality of series of openings extending circumferentially around the outer wall 11.

[0085] The partition wall 12 may include two spacers 121 and 122, which may be tubular and position one spacer inside the other spacer to define a first region 214a and a second region 214b of the second chamber 14, wherein the first region 214a may extend around the second region 214b, and the first region 214a and the second region 214b may be separated by the first spacer 121.

[0086] The second partition 122 can externally delimit a first region 214 a of the second chamber 14 , which is internally delimited by the first partition 121 , which surrounds the second region 214 b .

[0087] The first partition 121 and the second partition 122 form a portion of the partition wall 12 .

[0088] In other words, the first region 214 a of the second chamber 14 may include a cavity that is delimited on the inside by the first partition 121 and on the outside by the second partition 122 .

[0089] The second chamber 14 may be configured to accommodate salt to be dosed and released into the system in the region of the second chamber 14 .

[0090] For example, the second chamber 14 may include a receiving area 14c adapted to receive salt to be dispensed and in fluid communication with the first and second areas 214a, 214b of the second chamber 14, in sequence.

[0091] In other words, functionally, the first region 214a and the second region 214b of the second chamber 14 can be separated and divided by the containment region 14c, so that a fluid moving through the second chamber 14 from the first region 214a to the second region 214b must pass through the containment region 14c and thus pass through the salt to be distributed in the fluid, and vice versa.

[0092] Therefore, the partition wall 12 can be configured to also form a receiving portion 123, which delimits the receiving area 14c and can be used, for example, in the attached Figures 4 to 7 It is formed in the manner of the cylindrical container shown in .

[0093] The receiving portion 123 may be fixed to the spacers 121 and 122 and may be separated from the spacers 121 and 122 , for example, to accommodate salt to be dispensed therein.

[0094] In this regard, the receiving portion may include a cup-shaped element 123a and a cover 123b for closing the cup-shaped element 123a, for example, Figure 6 Visible in.

[0095] It can therefore be understood how, in this document, the term "wall" must be understood as referring to a structure suitable for separating at least two environments from one another in order to guide a liquid through said at least two environments, and which structure can comprise a single body or at least comprise separate parts that can be joined together and separated from one another.

[0096] The cartridge member 210 may include a separating spacer 60 designed to couple with the connecting member 22 and / or the container member 30, for example, Figures 4 to 10 As shown in , the internal compartment is divided into two parts, and the cylinder member 210 hydraulically communicates the two parts.

[0097] In particular, the separation spacer 60 is adapted to separate the cavity I from a bottom portion V1 of an internal compartment V which, when coupled to the container member 30 , may be bounded at the bottom by the container member 30 and at the top by the barrel member 210 .

[0098] The separation spacer 60 is configured to prevent liquid from passing directly between the chamber I and the bottom portion V1 of the inner compartment V.

[0099] The separating spacer 60 may extend radially from the outer wall to the inner face of the container member 30 .

[0100] The accommodating portion 123 can be configured so that the accommodating portion 123 can be accommodated inside the bottom portion V1 to separate the accommodating area 14c, accommodate the accommodating portion 123, and define a gap Io between the accommodating portion 123 and the container member 30, the gap Io being in fluid communication with the first area 214a of the second chamber 14 and in fluid communication with the second area 214b via the accommodating area 14c, the gap being in fluid communication with the accommodating area 14c, for example, by means of a through hole 130, which penetrates the through hole 130. The through-hole 130 is formed through the receiving portion 123 and is preferably formed in the cover 123b, and / or the through-hole 130 is formed in a portion of the receiving portion 123 that is distal to the second area 214b, so that the liquid that enters the receiving area 14c via the through-hole 130 to reach the second area 214b or enters the receiving area 14c from the second area 214b to reach the through-hole 130 must pass through the receiving area 14c to pass the salt to be dispensed that can be provided inside the receiving area 14c.

[0101] exist Figure 10 In the variation shown in , the second chamber 14 may not have the accommodating area 14c, but instead have a first area 214a and a second area 214b, both of which are configured to be open on the bottom part V1 of the internal compartment V, in which the salt to be dispensed can be accommodated.

[0102] In other words, according to this variant, the salt to be dosed is intended to be housed directly inside the container member 30 , rather than inside the cartridge member 210 , which in turn may be partially housed inside the container member.

[0103] Therefore, the cartridge member 210 may be configured such that the second chamber has two through-holes 141 and 142 therein, the two through-holes 141 and 142 being arranged to be spaced apart from each other such that liquid exiting from one of the two through-holes 141 and 142 and directed toward the other through-hole passes through the salt to be dispensed contained inside the container member 30.

[0104] For example, the first region 214a of the second chamber 14 may have a first through hole 141 and the second chamber 14c may have a second through hole 142 positioned to open in the bottom portion V1 of the internal compartment V when the cartridge member 210 is incorporated into the dispensing device 100 .

[0105] The barrel member 210 can be configured such that the first through hole 141 and the second through hole 142 are respectively located near two opposite end portions of the bottom portion V1 of the internal compartment V, so that liquid entering the bottom portion V1 through one of the first through hole 141 and the second through hole 142 must pass through the bottom portion V1 to exit from the other through hole, thereby passing through the salt located inside the bottom portion V1.

[0106] For example, the first spacer 121 may extend through the separation spacer 60 to protrude toward one end of the bottom portion V1 with respect to the separation spacer 60 , which exists at the opposite end.

[0107] In this case, the first spacer 121 can be tubular and have an open end that defines the first through hole 141, and the second through hole 142 can be defined by a second spacer 122 near the separation spacer 60, for example, the second through hole 142 can extend annularly along the cross-section of the first spacer 121 around the first spacer 121, and the second through hole 142 extends from the first spacer 121 to protrude relative to the separation spacer 60.

[0108] The first channel portion 15 may be defined by at least one hole or opening through the second spacer 122 .

[0109] Furthermore, the barrel member 210 has a second channel portion 16 provided for fluidly connecting the second chamber 14 , and in particular the second region 214 b of the second chamber 14 , to the first chamber 13 .

[0110] The cartridge member 210 further includes a pressure reducing device 110 configured to induce a pressure drop in the liquid passing through the pressure reducing device 110. The pressure reducing device 110 is located in the first chamber 13 between the first channel portion 15 and the second channel portion 16, such that the liquid moving within the first chamber 13 between the first channel portion 15 and the second channel portion 16 is subjected to a pressure drop. The pressure reducing device 110 may include a filter configured to retain particulate matter transported by the liquid passing through the filter.

[0111] In combination or alternatively, the pressure reducing device 110 may define the restricted portion A of the first chamber 13 , for example, by a protrusion 11 protruding from at least one of the outer wall 11 and the partition wall 12 inside the first chamber 13 .

[0112] Thus, in particular, both the first channel portion 15 and the second channel portion 16 fluidly communicate the first chamber 13 and the second chamber 14 of the barrel member 210 , thereby defining an inlet and an outlet for the liquid.

[0113] Along the gap channel defined between the outer wall 11 and the partition wall 12 , there are, in order in the direction of the main channel portion 17 : a first channel portion 15 , a restriction portion A, and a second channel portion 16 .

[0114] In particular, the protrusion 111 may protrude from the second spacer 122 towards the outer wall 11 within the first chamber 13. Thus, the protrusion 111 may comprise an annular shoulder protruding from the outer cylindrical surface of the second spacer 122 towards the outer wall 11 and / or from the inner cylindrical surface of the wall 11 towards the second spacer 122.

[0115] In other words, the protrusion 111 has the function of limiting the gap passage defined by the outer wall 11 and the partition wall 12 , and in particular limiting the gap passage between the preferably cylindrical outer wall 11 and the preferably cylindrical second partition 122 .

[0116] The first channel portion 15 and the second channel portion 16 may be disposed in close proximity to the pressure relief device 110, for example at a distance between 1 mm and 5 mm, for example on opposite sides of the protrusion 111, for example as shown in the attached Figures 4 to 10 , so that, depending on the direction of outflow, the first channel portion 15 is located directly upstream or downstream of the pressure-reducing device 110, and the second channel portion 16 is located directly downstream or upstream of the pressure-reducing device 110, respectively. Therefore, as the liquid passes through the first chamber 13, in the region of the pressure-reducing device 110, the pressure of the liquid along the first channel portion 15 differs from the pressure of the liquid along the second channel portion 16, so that the pressure difference between the first channel portion 15 and the second channel portion 16 causes the flow of the liquid through the second chamber 14 to deviate from one channel portion to the other, so that the liquid passes through the salt to be dosed. This deviated flow is obviously proportional to the pressure difference between the first channel portion 15 and the second channel portion 16, which in turn is directly proportional to the main liquid flow through the first chamber 13 in the area of the pressure reduction device 110, wherein the main flow is a flow bypassing the second chamber 14, which is conveyed by the cartridge member 210 directly from the second connection 21 to the second connection 22, or vice versa, depending on the assembly configuration of the dosing device 100 in the system in which it must be used and the resulting outflow direction of the liquid through the dosing device 100.

[0117] The dividing wall 12 may comprise a channel 19 in fluid communication with the second channel portion 16. The channel 19 further comprises a mouth opening into the second region 214b of the second chamber 14.

[0118] Channel 19 can be configured to cause a reduction in pressure on the liquid passing through it, for example, by forming or including a restriction. Consequently, before encountering pressure relief device 110, fluid entering cartridge member 210 at top end 211b of outer wall 11 enters first chamber 13 and flows into the gap channel defined between outer wall 11 and partition wall 12. Pressure relief device 110 creates a pressure differential in the fluid passing through it. Consequently, the portion of fluid flowing into the gap channel enters the interior of second chamber 14, specifically into first region 14a of first chamber 14, via second channel portion 16 and channel 19. This portion of fluid flows parallel to the portion of fluid passing through pressure relief device 110 until it reaches the salt to be dispensed within receptacle 14c of first chamber 14 or in bottom portion V1 of inner compartment V, and then flows back upward through first region 214a of second chamber 14. At this point, the fluid portion arriving from the first area 214b of the second chamber 14 exits via the first channel portion 16 into the gap channel P before passing through the main channel portion 17 into the cavity I and ultimately exiting via the second connection 22. The fluid portion that enters the second chamber 14 flows hydraulically parallel to the fluid portion that passes through the pressure relief device 110.

[0119] Figure 5 Shown according to Figure 4 The dispensing device 100 is shown without corresponding reference numerals in order to illustrate the liquid flow path which is opposite to the liquid flow path described so far, ie the liquid enters from the second connection piece 22 and leaves via the first connection piece 21 of the dispensing device.

[0120] The flow path is Figure 5 The visible grey arrows indicate the

[0121] Thus, it can be seen how the present invention enables the predetermined tasks and aims to be achieved and, in particular, enables precise dosing of phosphate elements having an irregular shape arranged inside the second chamber of the cartridge member or in the bottom portion V1 of the internal compartment V. Furthermore, in particular, the present invention enables precise dosing of phosphate elements having an irregular shape arranged inside the second chamber of the cartridge member.

[0122] The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of protection of the appended claims.

[0123] Furthermore, all the details may be replaced by other technically equivalent elements. If the operating characteristics and techniques mentioned in the following claims are followed by reference numerals or symbols, these reference numerals and symbols are assigned only for the purpose of facilitating the understanding of the claims, and therefore these reference numerals and symbols do not in any way limit the interpretation of each element identified by the reference numeral or symbol, which is merely an example.

Claims

1. A barrel member (10) of a salt dispensing device (100) for a hydraulic system; wherein: The salt dispensing device (100) comprises: a connecting member (20) having at least one first connecting piece (21) and at least one second connecting piece (22) and a coupling collar (23) in fluid communication with the at least one first connecting piece (21) or the at least one second connecting piece (22); a container member (30) capable of being coupled to the connecting member (20) so as to define, together with the connecting member (20), an internal compartment (V), the coupling collar (23) facing the internal compartment (V); The cylindrical member (10) comprises: a tubular outer wall (11) delimiting an operating chamber (11c) inside the outer wall (11) and extending from a connecting portion (11a) of the outer wall (11), the connecting portion (11a) being configured to engage with the coupling collar (23) to place the operating chamber (11c) in fluid communication with the coupling collar (23); the outer wall (11) being configured to be received inside the inner compartment (V) of the salt dispensing device (100) and defining, together with the container member (30), a cavity (I) outside the outer wall (11); a partition wall (12) connected to the outer wall (11) to divide the operating chamber (11c) into a first chamber (13) and a second chamber (14), wherein the second chamber (14) is configured to accommodate salt to be dispensed, or the second chamber (14) is configured as a receiving portion of the inner compartment (V) suitable for accommodating salt to be dispensed, wherein the second chamber (14) has at least one first channel portion (15) which places the first chamber (13) in fluid communication with the second chamber (14); wherein the outer wall (11) has a main channel portion (17) through which liquid can pass; the main channel portion (17) places the first chamber (13) in fluid communication with the cavity (I); wherein the barrel member (10) has at least one second channel portion (16) defined in the partition wall (12) to place the second chamber (14) in fluid communication with the first chamber (13), or the barrel member (10) has at least one second channel portion (16) defined in the outer wall (11) to place the second chamber (14) in fluid communication with the cavity (I); The barrel member (10) includes a pressure reducing device adapted to induce a pressure drop in a liquid passing through the pressure reducing device; In the case where the second channel portion (16) connects the second chamber (14) to the outside of the outer wall (11), the decompression device is located in the main channel portion; or, in the case where the second channel portion (16) connects the first chamber (13) to the second chamber (14), the decompression device is located in the first chamber (13) and between the first channel portion (15) and the second channel portion (16); or, the decompression device is located in the first chamber (13) and between the first channel portion (15) and the second channel portion (16).

2. The barrel member according to claim 1, wherein The pressure relief device comprises a filter and / or a restriction, the filter of the pressure relief device being adapted to retain particles transported by a liquid passing through the filter of the pressure relief device, the restriction having at least one protrusion (12a, 111) protruding from: - with the second passage portion (16) connecting the second chamber (14) with the cavity (I), the protrusions (12a, 111) protrude from the outer wall (11) toward the outside of the outer wall (11) to form a restriction in the cavity (I), and when the cartridge member (10) is incorporated in the salt dispensing device (100), the cartridge member (10) together with the container member (30) form the cavity (I), - Alternatively, the protrusion (12a, 111) protrudes from the partition wall (12) toward the outer wall (11) and / or from the outer wall (11) toward the partition wall (12) to form a restriction in a gap channel (P) defined between the outer wall (11) and the partition wall (12).

3. The barrel member (10) according to claim 2, wherein Along the gap channel (P) and between the connecting portion (11a) and the main channel portion (17), the first channel portion (15), the limiting portion and the second channel portion (16) are sequentially arranged, or the second channel portion (16), the limiting portion and the first channel portion (15) are sequentially arranged.

4. The barrel member (10) according to claim 2 or 3, wherein: The partition wall (12) has a tubular portion extending between the connecting portion (11a) or top end (211b) of the outer wall (11) and the main channel portion (17).

5. The barrel member (10) according to claim 3, wherein The first channel portion (15) opens in a first region (14a, 214a) of the second chamber (14), and the partition wall (12) comprises a channel (19) which is in fluid communication with the second channel portion (16) and has a mouth opening into a second region (14b, 214b) of the second chamber (14), wherein the first region (14a, 214a) of the second chamber (14) and the second region (14b, 214b) of the second chamber (14) are separated and partitioned by a receiving region (14c) which is suitable for receiving salt to be dispensed.

6. The barrel member (10) according to claim 1 or 2, wherein: The outer wall (11) has an end portion (11d) which is distal to the connecting portion (11a) so that when the barrel member (10) and the container member (30) are connected to the connecting member (20), the end portion (11d) faces the bottom of the container member (30); the second channel portion (16) is located inside the end portion (11d).

7. The barrel member (10) according to claim 6, wherein Along the extension direction (L) of the outer wall (11) extending from the connecting portion (11a) to the end portion (11d), the cylindrical member (10) has: - said first chamber (13) with said main channel portion (17), - said partition wall (12); - the second chamber (14); Wherein, the pressure reducing device is engaged with the main channel portion (17).

8. The barrel member (10) according to claim 7, wherein The partition wall (12) extends transversely with respect to the extension direction (L).

9. The barrel member (10) according to any one of claims 1 to 3, comprising a filter, the filter of the barrel member (10) being engaged with the main channel portion (17) to retain particles transported by the liquid passing through the main channel portion (17).

10. The barrel member (10) according to any one of claims 1 to 3, wherein The outer wall (11) is cylindrical, and the main channel portion (17) can have a plurality of openings extending in a circumferential direction relative to the outer wall (11).

11. A salt dispensing device (100) for a hydraulic system, the salt dispensing device (100) comprising: a connecting member (20) having at least one first connecting piece (21) and at least one second connecting piece (22) and a coupling collar (23) in fluid communication with the at least one first connecting piece (21) and / or the at least one second connecting piece (22); a container member (30) capable of being coupled to the connection member (20) so as to delimit, together with the connection member (20), an internal compartment (V), the coupling collar (23) facing the internal compartment (V); - The barrel member (10) according to any one of claims 1 to 10.

12. The salt dispensing device (100) according to claim 11, wherein The container member (30) has a conical or cylindrical extension, and the outer wall (11) of the barrel member (10) is cylindrical, and the main channel portion (17) can have a plurality of openings, which extend circumferentially relative to the outer wall (11), and the outer wall (11) of the barrel member (10) is coaxial with the container member (30) to define an annular cavity (I) around the outer wall (11) together with the container member (30).

13. Salt dispensing device (100) according to claim 11 or 12, wherein The coupling collar (23) and the connecting portion (11a) are configured to be coupled together in a leak-proof form-fitting manner; at least one gasket (11b) can be arranged between the coupling collar (23) and the connecting portion (11a).

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