Hydraulic connection device and hydraulic system

Abstract

The utility model relates to a hydraulic connecting device and a hydraulic system, the hydraulic system is connected with a pump unit, the hydraulic connecting device comprises at least one abrasion part and a valve, and further comprises a connecting part, the hydraulic connecting device comprises a first side and a second side, the hydraulic connecting device is configured to be connected to the pump unit on the first side, and the second side is configured to be connected to the pump unit on the second side. The second side of the hydraulic connection corresponds to a connection side of the valve, characterized in that the wear part, the connection part and the valve are connected to one another by means of a threaded connection to form the hydraulic connection, the connection part comprising at least one union nut, the union nut comprising at least one nut, and the connection part comprising at least one nut. The union nut is used for connecting a connecting part to a wear part.

Description

Technical Field

[0001] The utility model relates to a hydraulic connection device, which is used for connecting a hydraulic system and a pump unit, wherein the hydraulic connection device at least comprises a wear component and a valve, and also comprises a connection component, wherein the hydraulic connection device comprises a first side and a second side, wherein the hydraulic connection device is configured to connect the pump unit on its first side and to connect the hydraulic system on its second side.

[0002] Furthermore, in addition to the hydraulic system, the invention relates to a corresponding hydraulic system comprising a plurality of pump units, wherein each pump unit is connected to the hydraulic system by means of a corresponding hydraulic connection.

[0003] In addition, the utility model relates to a method for removing and / or replacing worn parts and / or removing and / or replacing at least part of a hydraulic connecting device, wherein the hydraulic connecting device connects a hydraulic system and a pump unit, the hydraulic connecting device includes at least a worn part and a valve, and also includes a connecting part, wherein the hydraulic connecting device includes a first side and a second side, wherein the hydraulic connecting device is configured to be connected to the pump unit on its first side and to be connected to the hydraulic system on its second side.

[0004] Furthermore, the present invention relates to the use of a hydraulic connection device for connecting a hydraulic system and a pump unit, or the use of a wear part for providing a hydraulic connection device, wherein the hydraulic connection device comprises at least a wear part and a valve, and further comprises a connecting part, wherein the hydraulic connection device comprises a first side and a second side, and the hydraulic connection device is configured to be connected to the pump unit on its first side and to be connected to the hydraulic system on its second side. Background Art

[0005] Generally, hydraulic connection devices for connecting a hydraulic system with a pump unit are known. Usually, a plurality of pump units are connected together to form a pump system in order to provide the required pressure. In particular for water supply, a plurality of pump units are combined into a so-called booster pump system in order to increase the existing water pressure and also to provide sufficient water pressure on higher floors.

[0006] The pump unit in such a pump system usually has two hydraulic connection ports, whereby liquid is sucked in at the suction port and discharged at a higher pressure at the discharge port. The hydraulic connection ports are formed, for example, by threaded pipes or other connection devices.

[0007] Such pump units are usually connected to a hydraulic system for suction and discharge ports (i.e. usually each such pump unit is connected to the hydraulic system, respectively, and usually to its manifold). Between each pump unit and the hydraulic system (i.e. usually between the manifold (of the hydraulic system) and each pump unit), hydraulic connection means are usually provided for connecting the hydraulic system and each pump unit.

[0008] Typically, such hydraulic connections comprise at least wear parts and valves, wherein the wear parts need to be completely removed (for inspection) or even replaced in the event of severe wear or regularly. An example of such wear parts is the use of non-return valves: such non-return valves (or check valves) typically need to be regularly inspected and / or replaced according to certain intervals, for example, time intervals - such as every year, or usage intervals - such as every certain number of operating hours or pumped (medium) volume - to ensure that they function properly.

[0009] In conventionally known hydraulic systems, in order to inspect or remove or replace worn parts, it is usually necessary to completely remove parts of the hydraulic system from the (remaining) hydraulic system, in particular to completely remove the manifold, which requires completely shutting down the hydraulic system and / or isolating it from the water network. Utility Model Content

[0010] The object of the utility model is to provide a technically simple, effective and economical solution for connecting a hydraulic system and a pump unit in a way that avoids the disadvantages of the prior art as much as possible. In particular, it should be possible to check and / or remove and / or replace worn parts (as parts of the hydraulic connection device) while the hydraulic system is in a pressurized state, i.e. without completely removing parts of the hydraulic system, in particular completely removing the manifold, and without completely shutting down the hydraulic system and / or isolating it from the water network. Moreover, checking and / or removing and / or replacing worn parts should not increase sealing problems and / or leakage (i.e. due to non-concentricity of the components). Another object of the utility model is to provide a corresponding hydraulic system, a corresponding method for removing and / or replacing worn parts and / or at least parts of the hydraulic connection device, a corresponding use of the hydraulic connection device for connecting the hydraulic system to the pump unit, and a corresponding use of the worn parts of the hydraulic connection device.

[0011] The purpose of the utility model is achieved by a hydraulic connecting device, which is used to connect a hydraulic system to a pump unit, wherein the hydraulic connecting device includes at least a wear part and a valve, and also includes a connecting part, wherein the hydraulic connecting device includes a first side and a second side, wherein the hydraulic connecting device is configured to connect the pump unit on its first side and to connect the hydraulic system on its second side, wherein the second side of the hydraulic connecting device corresponds to the connection side of the valve, the wear part, the connecting part and the valve are connected to each other by means of a threaded connection (threaded connection portion) to form a hydraulic connecting device, and wherein the connecting part includes a union nut and a locking nut.

[0012] Thus, according to the present invention, it is advantageously possible to provide the possibility of creating an axial distance or space for facilitating the removal and / or replacement of worn parts and / or facilitating the removal and / or replacement of at least part of the hydraulic connection device.

[0013] According to the present invention, a connecting component having or including both a union nut and a locking nut provides the possibility of easily replacing and / or removing and / or replacing wearing parts, in particular by means of the interaction of the threaded portion with a corresponding internal thread, such as the internal thread of a valve, or the internal thread of a wearing part or a pump unit.

[0014] The use of a threaded connection also advantageously achieves benefits compared to other conventionally known solutions, in particular with regard to increased sealing and the possibility of achieving smaller outer (or external) diameters, in particular for a given inner diameter of the slide.

[0015] Once the axial distance or space has been achieved, by means of loosening the union nut, it is advantageously possible to remove and / or replace wearing parts and / or remove and / or replace at least parts of the hydraulic connection relatively easily and quickly, and in particular without having to shut down the entire hydraulic system: it is only necessary to close the corresponding valves (as part of or relevant parts of the hydraulic connection) in order to hydraulically separate the wearing parts and / or the hydraulic connection towards the corresponding and required pump unit.

[0016] Thus, according to the invention, the hydraulic connection device advantageously provides the possibility of avoiding the disadvantages associated with such replacement and / or removal of wear parts associated with conventionally known hydraulic systems. These disadvantages include, for example, quality problems associated with leakage due to the difficulty in centering the wear parts, in particular in the case where the wear parts correspond to non-return valves.

[0017] In particular, the concept of the invention can be applied to a wide range of different hydraulic systems, in particular hydraulic systems comprising, in addition to the hydraulic system, a plurality of pump units, wherein each pump unit is connected to the hydraulic system via a respective hydraulic connection device according to the invention. In such an arrangement or in relation to such a hydraulic system, it is particularly advantageous to be able to interrupt the respective connection between the hydraulic system and the respective pump unit individually in order to replace worn parts and / or parts of the hydraulic connection device: in particular, the invention provides the possibility of not having to shut down (at the point of inspection or revision time) the hydraulic system for all pump units (and the respective hydraulic connection devices), but only the arrangement (pump unit and hydraulic connection device) under adjustment or inspection; this provides the advantage of being able to operate such a hydraulic system continuously, despite the removal and / or replacement of worn parts (e.g. in or one of the hydraulic connection devices), i.e. there is the possibility of easier removal (or replacement) of worn parts, e.g. a non-return valve or a non-return valve core, still working with the pressure intensifier or (other) pump unit. In particular according to the present invention, this advantage can be achieved and applied to a wide range of different categories of hydraulic systems and / or related pump units, for example, all 6" pump units and / or related pump units or hydraulic systems capable of pumping 2 to 6 cubic meters per hour, and / or pump units or hydraulic systems capable of pumping 10 to 16 cubic meters per hour.

[0018] In particular, according to the present invention, it is advantageously possible to remove the check valve (or the check valve core) from the check valve housing, which is impossible in conventionally known hydraulic systems because the check valve (or the check valve core) must be destroyed to remove it from the check valve housing.

[0019] According to the invention, another advantage is the possibility of using standard ball valves: with respect to the entire range of different power specifications, standard ball valves, such as brass ball valves (or stainless steel ball valves), can be advantageously used, so that according to the invention, there is no need to use (usually more costly) special ball valves, in particular stainless steel ball valves.

[0020] Yet another advantage relates to a connection component comprising a union nut for tightly connecting the connection component (e.g. with a wear component), wherein a sealing ring is used at the interface of the union nut (e.g. towards the first thread of the wear component). In particular and advantageously, the sealing ring corresponds to an integrated sealing ring (or O-ring), and in particular, in contrast to conventionally known hydraulic systems, it is no longer possible to loosen the O-ring.

[0021] According to the invention, it is advantageously possible and preferred to use a union nut at the connection of the connection part to the wearing part, and wherein a locking nut is used at the connection of the connection part to the valve, in particular to ensure the connection and its tightness, wherein the first side of the hydraulic connection corresponds to the connection side of the wearing part,

[0022] In particular, the hydraulic connection is formed as follows

[0023] - connected to one connection side of the connecting part by means of a union nut by means of the other connection side of the wearing part, and

[0024] - by means of the connection component being connected to the valve on its other connection side using a locking nut and in particular a threaded section which is in particular screwed into an internal thread of the valve.

[0025] Therefore, the method of the present invention can be advantageously realized and implemented in a relatively simple and effective manner.

[0026] According to the invention, it is also advantageous and preferred to use a union nut at the connection of the connecting part to the valve, and wherein a locking nut is used at the connection of the connecting part to the wearing part, in particular to ensure the connection and its tightness, wherein the first side of the hydraulic connection device corresponds to a connection side of the wearing part,

[0027] In particular, the hydraulic connection is formed as follows

[0028] - connected to one connection side of the connection part by means of the other connection side of the wearing part using a locking nut and in particular using a threaded portion, which is in particular screwed into an internal thread of the wearing part, and

[0029] --Connect to the valve using a union nut on the other connection side of the connecting part.

[0030] Therefore, the method of the present invention can be advantageously realized and implemented in a relatively simple and effective manner; in particular, the internal thread can be advantageously implemented as part of the wearing part, and only the wearing part and the connecting part need to be specially configured in order to implement the present invention.

[0031] According to the invention, it is also advantageous and preferred to use the wearing part at the connection of the first side of the hydraulic connection towards the pump unit by means of a flange connection (flange connection), in particular a flange connection comprising two screws.

[0032] Therefore, the method of the present invention can be advantageously realized and implemented in a relatively simple and effective manner. In particular, advantageously, the flange interface or flange connection toward the pump unit can be efficiently realized by means of a flange element as part of (or connected to) the wearing part.

[0033] According to the invention, it is also advantageously possible and preferred that the first side of the hydraulic connection corresponds to a connection side of the connection component, wherein a locking nut, in particular a threaded portion, is used, on this connection side of the connection component for its connection to the pump unit, in particular in order to ensure the connection and its tightness, the threaded portion, in particular being screwed into an internal thread of the pump unit,

[0034] In particular, a hydraulic connection is formed

[0035] - by means of a union nut on the other connection side of the connecting part and on one connection side of the wearing part, and

[0036] - connected to the valve on its other connection side by means of a wearing part, in particular also using a union nut.

[0037] Therefore, the method of the present invention can be advantageously realized and implemented in a relatively simple and effective manner; in particular, the internal thread can be advantageously implemented as part of the pump unit, and only the pump unit and the connecting component need to be specially configured to implement the present invention.

[0038] Furthermore, according to the present invention, it may be advantageous and preferred that the first side of the hydraulic connection device corresponds to a connection side of the connection component, wherein a union nut is used at this connection side of the connection component for its connection to the pump unit,

[0039] In particular, the hydraulic connection is formed as follows

[0040] - by means of a locking nut, in particular a threaded portion, on the other connection side of the connection part, with one connection side of the wearing part, in particular in order to ensure the connection and its tightness, and the threaded portion is in particular screwed into an internal thread of the wearing part, and

[0041] - connected to the valve by means of a wearing part, on its other connection side, in particular also using a union nut.

[0042] Therefore, the method of the present invention can be advantageously realized and implemented in a relatively simple and effective manner; in particular, the internal thread can be advantageously implemented as part of the wear component, and only the wear component and the connecting component need to be specially configured to implement the present invention. In addition, according to the present invention, it may be advantageous and preferred that the wear component corresponds to a check valve or a filter element, and / or the valve corresponds to a ball valve.

[0043] Therefore, the method of the present invention can be advantageously realized and implemented in a relatively simple and effective manner.

[0044] Furthermore, the present invention relates to a hydraulic system which, in addition to the hydraulic system, comprises a plurality of pump units, wherein each pump unit is connected to the hydraulic system by means of a corresponding hydraulic connection device according to the present invention.

[0045] Furthermore, the invention relates to a method for removing and / or replacing a wear part and / or at least part of a hydraulic connection, wherein the hydraulic connection connects a hydraulic system and a pump unit, wherein the hydraulic connection comprises at least a wear part and a valve and also a connecting part,

[0046] wherein the hydraulic connection device comprises a first side and a second side, wherein the hydraulic connection device is configured to be connected to the pump unit at its first side and to be connected to the hydraulic system at its second side,

[0047] wherein the second side of the hydraulic connection device corresponds to a connection side of the valve,

[0048] Characterized in that the wearing part, the connecting part and the valve are connected to one another by means of a threaded connection to form a hydraulic connection,

[0049] Wherein, the connecting component comprises a union nut and a locking nut, and wherein the method comprises the following steps:

[0050] - in a first step, loosening or opening the connection of the hydraulic connection device on its first side and loosening the threaded portion of the locking nut relative to the connection part,

[0051] --In the second step, the threaded part of the connection is rotated, together with the wear part,

[0052] --In the third step, the union nut is loosened or opened and the worn parts are removed and / or replaced.

[0053] Furthermore, the present invention relates to the use of a hydraulic connection device for connecting a hydraulic system to a pump unit, or to the use of a wear part for providing a hydraulic connection device, in particular, according to the present invention or for providing a system of the present invention or for use in a method of the present invention, wherein the hydraulic connection device comprises at least (or the) wear part and a valve, and further comprises a connecting part,

[0054] wherein the hydraulic connection device comprises a first side and a second side, the hydraulic connection device being configured to be connected to the pump unit at its first side and to be connected to the hydraulic system at its second side,

[0055] The second side of the hydraulic connection device corresponds to the connection side of the valve,

[0056] Characterized in that the connecting component comprises at least one union nut and a locking nut,

[0057] wherein - in the operating state of the hydraulic connection - the connecting part is connected to the wearing part,

[0058] In the maintenance state of the hydraulic connection device, the union nut and the lock nut are loosened so that when the valve is closed, the wearing parts can be removed or replaced and separated from the hydraulic system by means of the closed valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The above and other characteristics, features and advantages of the utility model will become apparent from the following detailed description in conjunction with the accompanying drawings, which illustrate the principles of the utility model by way of example. This description is given for illustrative purposes only and does not limit the scope of the utility model. The reference figures cited below refer to the attached drawings.

[0060] Figure 1 An exemplary embodiment of the invention is schematically shown according to a perspective view: a hydraulic connection is shown together with a pump unit, which is connected to a hydraulic system.

[0061] Figure 2 The exploded view of the hydraulic connection device of the utility model is schematically shown. DETAILED DESCRIPTION

[0062] The present invention will be described with reference to specific embodiments and with reference to certain drawings, but the present invention is not limited thereto, but only by the claims. The drawings described are only schematic and non-limiting. In the drawings, for the purpose of illustration, the size of some elements may be exaggerated and not drawn to scale.

[0063] When referring to a singular noun using an indefinite or definite article e.g. "a", "an", "the", this includes a plural of that noun unless something else is specifically stated.

[0064] In addition, the terms first, second, third, etc. used in the specification and claims are used to distinguish similar elements and are not necessarily used to describe a sequential or chronological order. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances, and the embodiments of the utility model described herein can be operated in other sequences than those described or illustrated herein.

[0065] exist Figure 1 , an embodiment of an exemplary hydraulic connection device 100 is schematically shown according to a perspective view. The hydraulic connection device 100 is connected to a pump unit 300 and a hydraulic system 200.

[0066] The hydraulic connection device 100 comprises a first side A and a second side B. On its first side A, the hydraulic connection device 100 is configured to be connected to a pump unit 300 . On its second side B, the hydraulic connection device 100 is configured to be connected to a hydraulic system 200 . Figure 1 Only a small portion of the hydraulic system 200 is shown (eg, the ends of the tubing leading to the manifold).

[0067] According to the present invention, the hydraulic connection device 100 includes at least a wear component 110 and a valve 130, and also includes a connection component 120, wherein the wear component 110, the connection component 120 and the valve 130 are connected to each other by means of a threaded connection portion to form the hydraulic connection device 100. The second side B of the hydraulic connection device 100 corresponds to one connection side of the valve 130, and the connection component 120 includes a union nut (slip nut) 125 and a locking nut 126.

[0068] Thus, the hydraulic connection device 100 comprises a wear part 110, a connection part 120 and a valve 130, so that the wear part 110 (at one of its two connection sides) is connected to the connection part 120 (at one of its two connection sides) (using a threaded connection), and the connection part 120 is in turn connected to the valve 130 (at one of its two connection sides) (at the other connection side of the connection part 120, again using a threaded connection), i.e. starting from the first side A of the hydraulic connection device 100, first the wear part 110, then the connection part 120, and then the valve 130. This corresponds to Figure 1 However, according to the present invention, another configuration of the hydraulic connection device 100 ( Figure 1 ) is possible: according to other configurations of the hydraulic connecting device 100, however, the hydraulic connecting device 100 still includes the wearing part 110, the connecting part 120 and the valve 130, the connecting part 120 (at one of its two connecting sides) is connected to the wearing part 110 (one of its two connecting sides) (using a threaded connection), and the wearing part 110 is in turn connected to the valve 130 (one of its two connecting sides) (at its other connecting side, again using a threaded connection), that is, starting from the first side A of the hydraulic connecting device 100, the connecting part 120 is first, then the wearing part 110; and then the valve 130.

[0069] exist Figure 2In the figure, a disassembled view of an embodiment of the hydraulic connecting device 100 of the present invention is schematically shown, and the components of the hydraulic connecting device 100, namely the wearing part 110, the valve 130 and the connecting part 120, are shown independently and are therefore more clearly visible: in the exemplary embodiment shown, the wearing part 110 includes a flange element 112, which is used to tightly connect the first side A of the hydraulic connecting device 100 to the pump unit 300, and in the exemplary embodiment shown, is connected to the flange of the pump unit 300.

[0070] The connecting component 120 includes a union nut 125 : according to the exemplary embodiment shown, the union nut 125 is used to tightly connect the connecting component 120 to the wearing component 110 ; according to the exemplary embodiment shown, this is accomplished using a sealing ring 125 ′ between the union nut 125 and the first thread 115 of the wearing component 110 .

[0071] Furthermore, the connection part 120 comprises a locking nut 126: according to the exemplary embodiment shown, the locking nut 126 is used to tightly connect the connection part 120 to the valve 130; according to the exemplary embodiment shown, this is done using a further sealing ring 126' between the locking nut 126 and the valve 130: the outer thread of the connection part 120, hereinafter referred to as the threaded part 120' (in Figure 2 The inner thread 136 of the valve 130 is first screwed into the connecting part 120 (shown on the left side in the figure); the connection is then fixed (and tightened) against the valve 130 by means of another sealing ring 126 ′ and a locking nut 126 .

[0072] At the other side of the valve 130 , a second side B of the hydraulic connection arrangement 100 is realized, the valve 130 being connected to the hydraulic system 200 using connection techniques known in the art.

[0073] therefore, Figure 1 and Figure 2 An embodiment of a hydraulic connection device 100 is shown, in which a union nut 125 is used for the connection of a connection part 120 to a wear part 110, and in which a lock nut 126 is used for the connection of the connection part 120 to a valve 130, in particular in order to ensure the connection and its tightness. A first side A of the hydraulic connection device 100 corresponds to one connection side of the wear part 110. The hydraulic connection device 100 is formed by connecting the other connection side (first thread 115) of the wear part 110 to one connection side of the connection part 120 using the union nut 125, and connecting the connection part 120 to the valve 130 at its other connection side (using the threaded portion 120') using the lock nut 126.

[0074] According to this configuration of the hydraulic connection device 100, it is advantageous according to the present invention that the wearing part 110 can be removed and / or replaced and / or at least part of the hydraulic connection device 100 can be removed and / or replaced, even though the hydraulic connection device 100 is fixedly integrated between the pump unit 300 (on its first side A) and the hydraulic system 200 (on its second side B), i.e., the axial distance between the pump unit 300 and the hydraulic system 200 (or the pump unit 300 and the internal thread 136 of the valve 130) is fixed and cannot be modified, at least cannot be meaningfully expanded (to enable easier removal and / or replacement of at least part of the hydraulic connection device 100); on the contrary, it is possible that, when the hydraulic system is in a pressurized state, this axial distance (between the pump unit 300 and the hydraulic system 200 or between the pump unit 300 and the internal thread 136 of the valve 130) may even be reduced (for example, due to mechanical stress and corresponding elastic displacement).

[0075] According to the present invention, this may be achieved by using a union nut 125 and a lock nut 126 of the connection part 120: in a first step, after the connection of the hydraulic connection device 100 on its first side A is loosened or opened, the lock nut 126 is loosened relative to the threaded portion 120' of the connection part (120); in other words, the lock nut 126 is moved away from the valve 130 on the threaded portion 120', thereby providing the possibility of further screwing (or rotating) the threaded portion 120' into (or rotating) the internal thread 136 of the valve 130 in a second step. This further screwing (or rotating) of the threaded portion 120' into (or rotating) the internal thread 136 of the valve 130 provides axial space so that at least part of the hydraulic connection device 100 can be removed and / or replaced; the rotation of the threaded portion 120' of the connection part 120 is preferably (but not necessarily) performed together with the wear part 110. In a third step, the union nut 125 is loosened or opened, and the wear part 110 can be removed and / or replaced. If the third step is performed before the second step, the rotation of the threaded portion 120 ′ of the connecting member 120 does not necessarily have to be completed together with the wearing member 110 .

[0076] according to Figure 2 In the embodiment shown, the wearing part 110 is connected at a first side A of the hydraulic connection 100 facing the pump unit 300 by means of a flange connection, which in particular comprises two screws. Figure 1 and Figure 2 3 , it is shown by way of example with the aid of a flange element 112 , which may be part of the wearing part 110 (or connected to the wearing part 110 ) and provide a flange interface or flange connection towards the pump unit 300 .

[0077] According to another preferred embodiment of the present invention (not shown in Figure 1 and Figure 2), the connecting part 120 is rotated 180 degrees in a certain way (along the vertical axis) so that the positions of the union nut 125 and the locking nut 126 are exchanged, that is, the union nut 125 is used for connecting the connecting part 120 with the valve 130, and the locking nut 126 is used for connecting the connecting part 120 with the wearing part 110, in particular to ensure the connection and its sealing. Figure 1 and Figure 2 In the embodiment shown in FIG. 1 , the first side A of the hydraulic connection device 100 corresponds to one connection side of the wear component 110, and in particular, is connected to one connection side of the connection component 120, i.e., connected to the threaded portion 120′, by means of a lock nut 126 via the other connection side of the wear component 110 (which requires an internal thread), and is connected to the valve 130 via a union nut 125 on the other connection side of the connection component 120 (in this case, the valve needs to have an external thread, not an external thread). Figure 2 The internal thread 136 shown in FIG. 1 ) forms the hydraulic connection device 100 .

[0078] According to another embodiment of the present invention (also not in Figure 1 and Figure 2 ), the first side A of the hydraulic connection device 100 corresponds to one connection side of the connection component 120 (i.e., the side of the connection component 120 has a threaded portion 120'), wherein the locking nut 126 is used at the connection side of the connection component 120 for connecting it to the pump unit 300 (in this case, the pump unit 300 needs to provide an internal thread), in particular to ensure the connection and its sealing. According to this embodiment, in particular, by using a union nut 125 at the other connection side of the connection component 120, it is connected to one connection side of the wear component 110 (i.e., the side corresponding to the first thread 115), and by means of the wear component 110, it is connected to the valve 130 at its other connection side, in particular, another union nut is used, thereby forming the hydraulic connection device 100.

[0079] According to another embodiment of the present invention (also not in Figure 1 and Figure 2), the first side A of the hydraulic connection device 100 corresponds to one connection side of the connection component 120, wherein the union nut 125 is used at the connection side of the connection component 120 for connecting it to the pump unit 300 (in this case, the pump unit 300 needs to provide an external thread in order to accommodate the union nut 125). According to this embodiment, in particular, by using a locking nut 126 at the other connection side of the connection component 120, it is connected to one connection side of the wear component 110 (which requires an internal thread) to particularly ensure the connection and its sealing, and by means of the wear component 110 at its other connection side connected to the valve 130, in particular using another union nut, thereby forming the hydraulic connection device 100.

[0080] According to all embodiments of the present invention, Figure 1 and Figure 2 One shown and one not shown Figure 1 and Figure 2 , the connection component 120 is arranged to enable an axial distance or axial space for enabling removal and / or replacement and / or installation of the wear part 110. This axial distance or axial space can be achieved by using a side of the connection component 120 having a threaded portion 120'; after the locking nut 126 (interacting with the threaded portion 120') is loosened, the connection component 120 can be rotated (i.e. screwed in) with the threaded portion 120' further into the internal thread, thereby providing the axial distance or space. In order to use this axial distance or space, the connection component 120 includes a union nut 125 on its opposite side (i.e. the opposite side of the threaded portion 120').

[0081] Figure 2 An embodiment is shown, starting from the first side A of the hydraulic connection device 100 (i.e. at the interface of the pump unit 300), first the wearing part 110, which is facing the connecting part 120 by means of the connecting side of the connecting part 120, which has a union nut 125; after the connecting part 120 is the valve 130, wherein both use the connecting side of the connecting part 120 with the threaded portion 120' and the locking nut 126 and the internal thread 136 of the valve 130 as an internal thread, providing the possibility of reaching or realizing an axial distance or space.

[0082] According to two other embodiments or configurations mentioned in the present invention, an internal thread similar to the internal thread 136 of the valve 130 (and having the same function) can be implemented as part of the wear part 110: According to the present invention, this configuration is possible with the help of two different embodiments or configurations of the hydraulic connection device 100. According to one of these embodiments or configurations, the connection part 120 has two opposite sides (with Figure 2Compared with the representation, that is, the connecting part 120 is rotated 180 degrees along the vertical axis, or in other words, the positions of the union nut 125 and the locking nut 126 are exchanged, and the union nut 125 is used for the connection between the connecting part 120 and the valve 130, while the locking nut 126 is used for the connection between the connecting part 120 and the wearing part 110, in which case the wearing part 110 needs to have an internal thread), according to other of these embodiments or configurations, the positions of the wearing part 110 and the connecting part 120 are exchanged, that is, starting from the first side A of the hydraulic connecting device 100 (that is, at the interface of the pump unit 300), the first is the connecting part 120 (towards the pump unit 300, by means of its connecting side, which has the union nut 125), and the second is the wearing part 110, and the connecting part 120 and the wearing part 110 are connected using the connecting side of the connecting part 120 having the locking nut 126 (and the wearing part 110 has a corresponding internal thread, which is similar to the internal thread 136 of the valve 130).

[0083] As an alternative to both of these embodiments or configurations (where wear member 110 includes similar internal threads), and as an alternative to valve 130 including internal threads 136 (such as Figure 2 As shown in FIG. 1 , according to the present invention, it is also possible and preferred to implement an internal thread at the interface between the connecting component 120 and the pump unit 300: Figure 2 Compared to the representation of , such an embodiment or configuration does not only correspond to the rotation of the connecting component 120 alone (along the vertical axis and rotated 180 degrees), but corresponds to the joint rotation of the connecting component 120 and the wearing component 110 (of course, if the wearing component 110 has directionality, for example due to a one-way valve or a filter unit, it is necessary to configure the wearing component 110 to retain the required directionality), that is, starting from the first side A of the hydraulic connecting device 100 (that is, at the interface of the pump unit 300), the connecting component 120 is again first (using the connecting side of the connecting component 120 with a locking nut 126 and the pump unit 300 with a corresponding internal thread, which is similar to Figure 2 The inner thread 136 of the valve shown in FIG. 1 is connected to the wearing part 110 , and the connecting part 120 and the wearing part 110 are connected by means of the connecting side of the connecting part 120 having a union nut 125 .

[0084] Therefore, according to all embodiments or configurations of the hydraulic connection device 100 of the present invention, since the connection component 120 has an (external) threaded portion 120' (and a locking nut 126), and by means of the interaction between the threaded portion 120' and the corresponding internal thread, the corresponding internal thread is the valve 130 (such as Figure 1 and Figure 2100 or the pump unit 300, by means of further screwing or rotating at least the connecting part 120 into the corresponding internal thread after the locking nut 126 has been loosened, an axial distance or space can advantageously be achieved. Once the axial distance or space has been achieved, by means of loosening the union nut 125, it is advantageously possible to remove and / or replace the wearing part 110 and / or remove and / or replace at least part of the hydraulic connection 100 relatively easily and quickly, in particular without having to shut down the entire hydraulic system 200: it is only necessary to close the corresponding valve 130 (related to the hydraulic connection 100 under consideration or concern) in order to hydraulically isolate the wearing part 110 and / or the hydraulic connection 100 towards the corresponding and considered pump unit 300.

[0085] Therefore, with respect to all embodiments or configurations of the hydraulic connecting device 100, the method of the present invention for removing and / or replacing a wearing part 110 and / or removing and / or replacing at least a portion of the hydraulic connecting device 100 can be applied: the connecting part 120 includes a union nut 125 and a locking nut 126, and the method includes loosening or opening the connection of the hydraulic connecting device 100 at a position opposite to the locking nut 126, for example, on its first side A, and loosening the locking nut 126 relative to the threaded portion 120' of the connecting part 120; in addition, the threaded portion 120' of the connecting part 120 is further screwed into an internal thread (an internal thread of the valve 130 (reference numeral 136), or an internal thread of the wearing part or the pump unit 300), in particular together with the wearing part 110, and the union nut 125 is loosened or opened, and the wearing part 110 is removed and / or replaced.

Claims

1. A hydraulic connection device (100), the hydraulic connection device (100) being used to connect a hydraulic system (200) to a pump unit (300), wherein: The hydraulic connection device (100) comprises at least one wear component (110) and a valve (130), and further comprises a connection component (120). The hydraulic connection device (100) comprises a first side (A) and a second side (B), wherein the hydraulic connection device (100) is configured to be connected to the pump unit (300) at its first side (A) and to be connected to the hydraulic system (200) at its second side (B), wherein the second side (B) of the hydraulic connection device (100) corresponds to the connection side of the valve (130), Characterized in that the wearing part (110), the connecting part (120) and the valve (130) are connected to each other by means of a threaded connection to form the hydraulic connecting device (100), Wherein, the connecting component (120) comprises a union nut (125) and a locking nut (126).

2. The hydraulic connection device (100) according to claim 1, characterized in that: The union nut (125) is used for connecting the connecting part (120) to the wearing part (110), and wherein the locking nut (126) is used for connecting the connecting part (120) to the valve (130), in particular in order to ensure the connection and its tightness, wherein the first side (A) of the hydraulic connection device (100) corresponds to a connection side of the wearing part (110), In particular, the hydraulic connection device (100) is formed as follows - connecting the other connecting side of the wearing part (110) to one connecting side of the connecting part (120) using the union nut (125), and - By means of the connecting component (120), the other connecting side thereof is connected to the valve (130) using the locking nut (126) and in particular using the threaded portion (120'), in particular, the threaded portion (120') is screwed into the internal thread (136) of the valve (130).

3. The hydraulic connection device (100) according to any one of the preceding claims, characterized in that The union nut (125) is used for connecting the connection part (120) to the valve (130), while the lock nut (126) is used for connecting the connection part (120) to the wear part (110), in particular to ensure the connection and its tightness, wherein the first side (A) of the hydraulic connection device (100) corresponds to a connection side of the wear part (110), In particular, the hydraulic connection device (100) is formed as follows - connecting to one connection side of the connection part (120) by means of the other connection side of the wearing part (110) using the locking nut (126), in particular the threaded portion (120'), in particular the threaded portion (120') being screwed into the internal thread of the wearing part (110), and --The connecting component (120) is connected to the valve (130) using the union nut (125) on the other connecting side thereof.

4. The hydraulic connection device (100) according to any one of the preceding claims, characterized in that At the first side (A) of the hydraulic connection (100) facing the pump unit (300), the wearing part (110) is connected by means of a flange connection, in particular comprising two screws.

5. The hydraulic connection device (100) according to any one of the preceding claims, characterized in that The first side (A) of the hydraulic connection device (100) corresponds to a connection side of the connection component (120), wherein the locking nut (126), in particular the threaded portion (120'), is used on this connection side of the connection component (120) for connecting it to the pump unit (300), in particular in order to ensure the connection and its tightness, the threaded portion (120') is screwed into an internal thread of the pump unit (300), In particular, the connection device (100) is formed as follows - connecting to one connection side of the wear part (110) by using the union nut (125) on the other connection side of the connecting part (120), and - By means of the wearing part (110) it is connected to the valve (130) on its other connection side, in particular using a further union nut.

6. The hydraulic connection device (100) according to any one of the preceding claims, characterized in that The first side (A) of the hydraulic connection device (100) corresponds to a connection side of the connection component (120), wherein the union nut (125) is used at the connection side of the connection component (120) for connecting it to the pump unit (300), In particular, the hydraulic connection device (100) is formed as follows: - by means of the locking nut (126) and in particular the threaded portion (120') being connected to one connection side of the wearing part (110) on the other connection side of the connecting part (120), in particular in order to ensure the connection and its tightness, and the threaded portion (120') being in particular screwed into an internal thread of the wearing part (110), and - By means of the wearing part (110) it is connected to the valve (130) on its other connection side, in particular using a further union nut.

7. The hydraulic connection device (100) according to any one of the preceding claims, characterized in that The wear part (110) corresponds to a check valve or a filter element.

8. The hydraulic connection device (100) according to any one of the preceding claims, characterized in that The valve (130) corresponds to a ball valve.

9. A hydraulic system (200), characterized in that: Each pump unit (300) of the plurality of pump units (300) is connected to the hydraulic system (200) by means of a hydraulic connection device (100) according to any one of the preceding claims, respectively.

Images