Hydraulic motor of hydraulically driven proportioning mixer

Abstract

The embodiment of the utility model discloses a hydraulic motor of a hydraulically-driven proportioning mixer, which comprises a motor shell provided with a pressure water inlet, a pressure water outlet and at least one output port; a stator; a rotor; wherein the pressure water inlet and the pressure water outlet are both communicated with an inner cavity of the motor shell through a cuboid-shaped connecting cavity, the connecting cavity extends from outside to inside, the tail end of the connecting cavity is provided with a fillet bend, and at least one part of the rotor extends into the connecting cavity from the tail end. By arranging the connecting cavity, pressure water flow enters from the pressure water inlet, turns along the fillet at the tail end and then flows into the inner cavity of the motor shell, so that the impact force of the pressure water flow on the cavity wall of the connecting cavity is reduced, and the energy loss caused by stress concentration is reduced; by arranging the rounded corner turning at the tail end of the connecting cavity and the rotor, smoothing of the streamline of the pressure water body is facilitated, the water flow vortex loss is further reduced, the energy conversion rate of converting water energy into mechanical energy is improved, and the driving efficiency of the rotor is improved.

Description

Technical Field

[0001] This application relates to the field of hydraulic motors, and more particularly to a hydraulically driven proportional mixer hydraulic motor. Background Technology

[0002] A hydraulic motor in a hydraulically driven proportioning mixer is a device that converts water energy into mechanical energy. It is typically used to drive a proportioning pump to ensure that additives are precisely injected into water or fluid lines within different flow rates, feed ratios, and pressure ranges.

[0003] Currently, the hydraulic motor of a hydraulically driven proportioning mixer achieves hydraulic drive by impacting the rotor of an internal water turbine with the flow of pressurized water. However, in the existing hydraulic motors of hydraulically driven proportioning mixers, pressurized water enters the inner cavity of the motor from the pressurized water inlet and directly impacts the circumferential surfaces of the stator and rotor, resulting in unnecessary impact energy loss and water flow eddy current loss, making it difficult to improve the water energy conversion rate. Utility Model Content

[0004] One or more embodiments of this application provide a hydraulically driven proportional mixer hydraulic motor to solve or at least partially alleviate the problem in the existing hydraulically driven proportional mixer hydraulic motors in the related art that the pressurized water flow directly impacts the circumferential surfaces of the stator and rotor, resulting in unnecessary impact energy loss and water flow eddy current loss, making it difficult to improve the water energy conversion rate.

[0005] One or more embodiments of this application provide a hydraulically driven proportional mixer hydraulic motor, employing the following technical solution:

[0006] A hydraulically driven proportional mixer motor includes:

[0007] A motor housing having a pressurized water inlet, a pressurized water outlet and at least one output port, wherein the pressurized water inlet and the pressurized water outlet are disposed opposite to each other on the motor housing;

[0008] The stator is installed inside the motor housing;

[0009] The rotor is rotatably coupled to the interior of the stator and has blades circumferentially distributed around its axis of rotation located inside the stator. An output shaft extending out of at least one of the output ports is provided on one side of the rotor.

[0010] The pressurized water inlet and the pressurized water outlet are both connected to the inner cavity of the motor housing through a cuboid connecting cavity. The connecting cavity extends from the outside to the inside and has a rounded corner at the end. At least a portion of the rotor extends into the connecting cavity from the end.

[0011] In some embodiments, the connecting cavity has an upper rotation angle and a lower rotation angle at its end, the upper rotation angle and the lower rotation angle being located on the upper and lower sides of the rotor, respectively.

[0012] In some embodiments, the centerline height of the connecting cavity is higher than the centerline height of the rotor.

[0013] In some embodiments, the radius of the upper corner is greater than the radius of the lower corner.

[0014] In some embodiments, the central axis of the pressurized water inlet and the pressurized water outlet is perpendicular to the axis of the output port.

[0015] In some embodiments, the connecting cavity includes a connecting section and a corner area. The connecting section connects to the pressurized water inlet or the pressurized water outlet and is rectangular in shape. The upper corner and the lower corner together form the corner area.

[0016] In some embodiments, the upper corner is formed by the horizontal cavity wall and the rounded curved surface.

[0017] In some embodiments, the extension line of the end point of the rounded surface is tangent to the outer contour of the rotor.

[0018] In some embodiments, both the connecting segment and the corner area have a streamlined shape.

[0019] Compared with related technologies, one or more embodiments of this application include at least one of the following beneficial technical effects:

[0020] (1) This application sets a connecting cavity between the inlet and outlet of the pressurized water and the inner cavity of the motor housing. The rectangular connecting cavity improves the flow stability of the pressurized water flow. The rounded corner at the end of the connecting cavity allows the pressurized water to enter from the pressurized water inlet and then flow into the inner cavity of the motor housing along the rounded corner at the end, thereby reducing the impact force of the pressurized water flow on the cavity wall and reducing energy loss caused by stress concentration.

[0021] (2) By setting a rounded corner and a rotor at the end of the connecting cavity, the pressurized water body can flow smoothly through the rounded corner and the top of the rotor by using the rounded corner and the rotor that partially extends into the connecting cavity from the end. This helps to smooth the streamline of the pressurized water body, reduce the vortex and turbulence generated by the direct impact of the pressurized water flow on the rotor and leaving the rotor, further reduce the water flow vortex loss, and improve the energy conversion rate of water energy into mechanical energy, thereby improving the driving efficiency of the rotor. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this application and are not intended to limit this application.

[0023] Figure 1 This is a schematic diagram of the overall structure of a hydraulic motor for a hydraulically driven proportional mixer according to some embodiments of this application.

[0024] Figure 2 This is a three-dimensional structural diagram of a motor housing according to some embodiments of this application.

[0025] Figure 3 This is a top view of a motor housing structure according to some embodiments of this application.

[0026] Figure 4 This is an internal cross-sectional view of a motor housing and a water turbine according to some embodiments of this application.

[0027] Figure 5 This is a schematic diagram of a stator structure according to some embodiments of this application.

[0028] In the diagram: 1. Hydraulic motor; 10. Motor housing; 101. Pressure water inlet; 102. Pressure water outlet; 103. Output port; 104. Cover; 11. Connecting cavity; 111. Connecting section; 112. Corner area; 1101. Upper corner; 1102. Lower corner; 11001. First connecting cavity; 11002. Second connecting cavity; 12. Inner cavity of motor housing; 20. Water turbine; 21. Stator; 211. Grille; 2111. Solid; 2112. Grille opening; 22. Rotor; 221. Blade; 222. Output shaft. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0030] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this application, it should be understood that the terms "center", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation can be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a mutually exclusive, independent, or alternative implementation. It is explicitly and implicitly understood by those skilled in the art that the implementations described in this application can be combined with other implementations.

[0034] As mentioned above, it should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, components, or groups of features, integers, steps, or components. As used in this application, the singular forms "a," "an," and "the" also include the plural forms, unless the context clearly indicates otherwise.

[0035] The terms “a” and “an” used in this specification may mean one, but may also be used interchangeably with “at least one” or “one or more”. The term “about” generally means the mentioned value plus or minus 10%, or more specifically, plus or minus 5%. The term “or” used in the claims means “and / or” unless it is explicitly stated that it refers only to alternatives.

[0036] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0037] One or more embodiments of this application disclose a hydraulically driven proportional mixer hydraulic motor 1. (Refer to...) Figure 1-5 The hydraulic motor 1 of the hydraulically driven proportional mixer includes:

[0038] The motor housing 10 has a pressure water inlet 101, a pressure water outlet 102 and at least one output port 103. The pressure water inlet 101 and the pressure water outlet 102 are disposed opposite to each other on the motor housing 10, and their central axes are perpendicular to the axis of the output port 103.

[0039] Stator 21, which is installed inside the motor housing 10;

[0040] The rotor 22 is rotatably coupled to the interior of the stator 21 and has blades 221 circumferentially distributed around its axis of rotation located inside. An output shaft 222 extending out of at least one of the output ports 103 is provided on one side of the rotor 22.

[0041] The pressurized water inlet 101 and the pressurized water outlet 102 are both connected to the inner cavity 12 of the motor housing through a cuboid connecting cavity 11. The connecting cavity 11 extends from the outside to the inside and has a rounded corner at the end. At least a portion of the rotor 22 extends into the connecting cavity 11 from the end.

[0042] This application improves the stability of pressurized water flow, enhances the fluidity and flow pattern of the water flow, and reduces frictional resistance by using the cuboid-shaped connecting cavity 11. The rounded corner at the end of the connecting cavity 11 extending from the outside to the inside allows the pressurized water to flow into the inner cavity 12 of the motor housing along the rounded corner as it passes through the end of the connecting cavity 11. This avoids stress concentration of the pressurized water caused by changes in cross-sectional dimensions at the junction of the connecting cavity 11 and the inner cavity 12 of the motor housing, reducing pressure loss caused by stress concentration. The rounded corner also helps to smooth the streamline, reduce the impact and separation of the pressurized water flow on the cavity wall of the connecting cavity 11, reduce vortex losses, and conform to the rotation direction of the water flow. At least a portion of the rotor 22 extends into the connecting cavity 11 from the end of the connecting cavity 11. After passing through the rounded corner, the pressurized water flows into the inner cavity 12 of the motor housing, driving the rotor 22 to rotate in a smooth contact manner. This reduces the vortex and turbulence generated by the direct impact of the pressurized water flow on the rotor 22, further reducing water vortex losses and pressure losses. This is beneficial to improving the energy conversion rate of water energy into mechanical energy and improving the driving efficiency of the rotor 22.

[0043] In this application, the inner cavity 12 of the motor housing is a cavity located in the middle of the motor housing 10 for housing the stator 21 and the rotor 22, excluding the connecting cavity 11. The connecting cavity 11 extends from the outside to the inside, that is, from the pressurized water inlet 101 or the pressurized water outlet 102 into the inner cavity 12 of the motor housing. The end of the connecting cavity 11 refers to the extension end of the connecting cavity 11, that is, the junction of the connecting cavity 11 and the inner cavity 12 of the motor housing. The end points are all terminal points extending along the aforementioned same extension direction, that is, terminal points with rounded corners.

[0044] like Figure 2-3 As shown, the motor housing 10 has four ports with different orientations, implemented as two pairs of oppositely arranged ports. The arrangement of these two pairs of ports is perpendicular to each other, so that pressurized water flows in and out from one pair of ports, driving the rotor 22 mounted on the other pair of ports to rotate, thereby maximizing the conversion rate of water energy to mechanical energy. One pair of ports is implemented as the pressurized water inlet 101 and the pressurized water outlet 102, which are arranged opposite to each other. The other pair of ports is implemented as two output ports 103, and each of the two output ports 103 is equipped with a cover 104. The stator 21 is fixedly installed between the two covers 104. The rotor 22 is rotatably coupled to the stator 21, and an output shaft 222 is provided on one side of the rotor 22. The output shaft 222 extends out of at least one output port 103 and the cover 104 installed on the output port 103.

[0045] In some optional embodiments, the motor housing 10 has a pressurized water inlet 101, a pressurized water outlet 102, an output port 103, and a closed end. The pressurized water inlet 101 and the pressurized water outlet 102 are arranged opposite to each other, and the output port 103 is arranged opposite to the closed end. The arrangement direction of the pressurized water inlet 101 and the pressurized water outlet 102 is perpendicular to the arrangement direction of the output port 103 and the closed end. A bearing is provided on the closed end, and a cover 104 is installed on the output port 103. The stator 21 is fixedly installed between the closed end and the cover 104. The rotor 22 is rotatably coupled to the stator 21, and one side of the rotor 22 is rotatably connected to the bearing. An output shaft 222 is provided on the other side of the rotor 22. The output shaft 222 extends out of the output port 103 and the cover 104 installed on the output port 103.

[0046] The stator 21 and the rotor 22 together form the water turbine 20, and the output shaft 222 provided on one side of the rotor 22 is the output shaft 222 of the water turbine 20.

[0047] In the prior art, when the end of the connecting cavity 11 from the outside to the inside does not have a rounded corner, the pressurized water flows into the motor housing 10 from the pressurized water inlet 101, directly impacting the stator 21 and rotor 22, and flows out from the pressurized water outlet 102. The pressurized water will generate stress concentration at the point where the cross-sectional size changes abruptly, and eddies and turbulence are easily formed in the surrounding areas of the stator 21 and rotor 22. That is, the pressurized water will generate stress concentration at the junction of the connecting cavity 11 and the inner cavity 12 of the motor housing, and eddies and turbulence are easily formed in the area that is about to contact the stator 21 and rotor 22 and the area that is about to separate from the stator 21 and rotor 22, increasing energy loss and vortex loss, and affecting the fluidity and energy conversion rate of the pressurized water.

[0048] In this application, a rounded corner is designed at the end of the connecting cavity 11 from the outside to the inside, so that when the pressurized water flows to the end of the connecting cavity 11, it flows smoothly into the inner cavity 12 of the motor housing along the rounded corner, avoiding abrupt changes in the cross-sectional dimensions between the connecting cavity 11 and the inner cavity 12 of the motor housing, reducing stress concentration at the interface between the two, thereby reducing pressure loss caused by stress concentration.

[0049] In some embodiments of this application, the rounded corner transition is implemented as an upper corner 1101 and a lower corner 1102, that is, the connecting cavity 11 has an upper corner 1101 and a lower corner 1102 located at the end. The upper corner 1101 and the lower corner 1102 are respectively located on the upper and lower sides of the rotor 22. The upper corner 1101 and the lower corner 1102 of the pressurized water inlet 101 are respectively located on the upper side and the lower side of the rotor 22. At least a portion of the rotor 22 extends into the connecting cavity 11 from the end of the connecting cavity 11, so that most of the pressurized water flows smoothly along the upper corner 1101 across the top of the rotor 22 at the junction of the connecting cavity 11 and the inner cavity 12 of the motor housing, or flows smoothly along the lower corner 1102 across the bottom of the rotor 22, thereby driving the rotor 22 to rotate and realizing hydraulic drive.

[0050] Specifically, the connecting cavity 11 between the pressurized water inlet 101 and the inner cavity 12 of the motor housing, and the connecting cavity 11 between the pressurized water outlet 102 and the inner cavity 12 of the motor housing, both have an upper angle 1101 and a lower angle 1102 at their ends, such as... Figure 4 As shown, along the flow direction of the pressurized water, the connecting cavity 11 between the pressurized water inlet 101 and the inner cavity 12 of the motor housing is defined as the first connecting cavity 11001, and the connecting cavity 11 between the pressurized water outlet 102 and the inner cavity 12 of the motor housing is defined as the second connecting cavity 11002. Both the first connecting cavity 11001 and the second connecting cavity 11002 have an upper turning angle 1101 and a lower turning angle 1102 at their ends, so that the pressurized water flows smoothly from the first connecting cavity 11001 to the top or bottom of the rotor 22. After driving the rotor 22 to rotate, it then flows smoothly from the inner cavity 12 of the motor housing to the second connecting cavity 11002, reducing the eddies and turbulence generated at the junction of the first connecting cavity 11001 and the inner cavity 12 of the motor housing, and further reducing the water flow vortex loss.

[0051] Furthermore, the radius of the upper corner 1101 is greater than that of the lower corner 1102, so that the pressurized water flows through the top of the rotor 22 to drive the rotor 22 to rotate. That is, most of the pressurized water flows smoothly along the upper corner 1101 through the top of the rotor 22 to drive the rotor 22 to rotate, thereby further improving the energy conversion rate and the driving efficiency of the rotor 22.

[0052] like Figure 4As shown, the upper corner 1101 is formed by the horizontal cavity wall of the connecting cavity 11 and a rounded curved surface, and faces the rotor 22, so that the pressurized water flows smoothly along the rounded curved surface over the top of the rotor 22, reducing stress concentration caused by abrupt changes in the cross-sectional dimensions, and reducing eddies and turbulence generated before contacting the rotor 22, thus reducing pressure loss.

[0053] Furthermore, the centerline height of the connecting cavity 11 is higher than the centerline height of the rotor 22, so that most of the pressurized water flows through the top of the rotor 22 to drive the rotor 22 to rotate, reducing the impact loss caused by direct impact in the pressurized water, reducing the impact of the pressurized water flowing through the bottom of the rotor 22 on driving the rotor 22, and further improving the driving efficiency.

[0054] In some embodiments, the extension line of the end point of the rounded curved surface is tangent to the outer contour of the rotor 22, that is, the extension line of the end point of the upper rotation angle 1101 is tangent to the outer contour of the rotor 22. The water flow impact at the tangent angle can reduce the wear on the surface of the rotor 22 because the impact force is more evenly distributed, reducing the wear in local high stress areas, which helps to improve the service life and efficiency of the rotor 22.

[0055] In some embodiments, the vertical landing point of the end point of the upper corner 1101 is located on the stator 21, such as... Figure 5 As shown, the stator 21 has a grid 211 on its circumferential side surface. The vertical landing point of the end point of the upper corner 1101 is located on the body 2111 of the grid 211, so that pressurized water enters from the grid opening 2112 of the stator 21, reducing the pressure loss caused by the pressurized water hitting the body 2111 of the grid 211.

[0056] like Figure 4 As shown, the connecting cavity 11 includes a connecting section 111 and a corner area 112. The connecting section 111 connects to the pressurized water inlet 101 or the pressurized water outlet 102 and is in the shape of a cuboid. The upper corner 1101 and the lower corner 1102 together form the corner area 112. The cuboid design of the connecting section 111 can improve the flow stability of the pressurized water. By changing the shape of the flow channel, the frictional resistance and local resistance of the pressurized water are reduced, thereby reducing pressure loss and improving the efficiency of the hydraulic motor 1.

[0057] In some specific embodiments, both the connecting section 111 and the corner area 112 are streamlined in shape, further reducing the friction loss of the pressurized water flow.

[0058] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A hydraulically driven proportional mixer motor, characterized in that, include: A motor housing having a pressurized water inlet, a pressurized water outlet and at least one output port, wherein the pressurized water inlet and the pressurized water outlet are disposed opposite to each other on the motor housing; The stator is installed inside the motor housing; The rotor is rotatably coupled to the interior of the stator and has blades circumferentially distributed around its axis of rotation located inside the stator. An output shaft extending out of at least one of the output ports is provided on one side of the rotor. The pressurized water inlet and the pressurized water outlet are both connected to the inner cavity of the motor housing through a cuboid connecting cavity. The connecting cavity extends from the outside to the inside and has a rounded corner at the end. At least a portion of the rotor extends into the connecting cavity from the end.

2. The hydraulic motor for a hydraulically driven proportional mixer as described in claim 1, characterized in that, The connecting cavity has an upper rotation angle and a lower rotation angle at the end, which are located on the upper and lower sides of the rotor, respectively.

3. The hydraulic motor for a hydraulically driven proportional mixer as described in claim 1, characterized in that, The centerline height of the connecting cavity is higher than the centerline height of the rotor.

4. The hydraulic motor for a hydraulically driven proportional mixer as described in claim 2, characterized in that, The radius of the upper corner is greater than the radius of the lower corner.

5. The hydraulic motor for a hydraulically driven proportional mixer as described in claim 2, characterized in that, The central axis of the pressurized water inlet and the pressurized water outlet is perpendicular to the axis of the output port.

6. The hydraulic motor for a hydraulically driven proportional mixer as described in claim 2, characterized in that, The connecting cavity includes a connecting section and a corner area. The connecting section connects to the pressurized water inlet or the pressurized water outlet and is rectangular in shape. The upper corner and the lower corner together form the corner area.

7. The hydraulic motor for a hydraulically driven proportional mixer as described in claim 2, characterized in that, The upper corner is formed by the horizontal cavity wall and the rounded curved surface.

8. The hydraulic motor for a hydraulically driven proportional mixer as described in claim 7, characterized in that, The extension line of the end point of the rounded surface is tangent to the outer contour of the rotor.

9. The hydraulic motor for a hydraulically driven proportional mixer as described in claim 6, characterized in that, Both the connecting section and the corner area have a streamlined shape.

10. The hydraulic motor for a hydraulically driven proportional mixer as described in claim 6, characterized in that, The stator has a grid on its circumferential side surface.

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