Liquid kinetic energy secondary utilization device

Abstract

A device for secondary utilization of liquid kinetic energy, comprising a working body with a work surface, a spray surface and a joint; the working body has an impeller cavity excavated on one side of the work surface, the bottom of the impeller cavity is a partition with an axial hole and a leakage hole, and the wheel shaft at one end of the impeller passes through the axial hole to output rotational mechanical energy to the outside; the joint is provided with a liquid inlet hole, and the liquid inlet hole forms an energy-gathering port for liquid outflow on the inner wall of the impeller cavity, and a guide groove is provided on the flow path of the inner wall of the impeller cavity after the liquid flows out from the energy-gathering port; an annular groove is opened on one side of the spray surface of the working body, and the guide groove is connected to the annular groove, and a ring cover for distributing spray holes is provided on the annular groove, and liquid with certain kinetic energy can be sprayed outward through the spray hole. The present invention can gather the kinetic energy of the liquid after being transported by an external power device to complete the spray operation and convert part of the kinetic energy of the liquid into mechanical energy output, which solves the problems of uneven liquid outlet pressure and excessive noise during use generated in the process of lightweight and thinning, and has a better user experience.

Description

Technical Field

[0001] The invention relates to a liquid kinetic energy secondary utilization device, belonging to the technical field of production and manufacturing of liquid kinetic energy secondary utilization devices. Background Art

[0002] Water is not only a living and production resource, but also a carrier of energy. For example, people in ancient times used water energy to drive mills, and now people use water energy to generate electricity, etc. These are all primary utilization devices of liquid kinetic energy.

[0003] With the development of society and the improvement of living standards, people's domestic water nowadays mainly comes from tap water provided by the municipal pipeline network.

[0004] Tap water not only solves people's needs for domestic water, but also has a certain pressure. That is to say, the tap water delivered to each household through the municipal pipeline network itself also has a certain kinetic energy. In addition, well water, pool water, and various liquids extracted, pressurized and transported by water pumps also have a certain kinetic energy.

[0005] Usually, the kinetic energy of liquids such as water is no longer used in the process of water use or liquid transportation. However, the kinetic energy of water or liquid can be redeveloped and utilized through some devices, thereby providing more services for people's lives, contributing to energy conservation and emission reduction, and creating a more colorful and beautiful life for people. This device that redevelops and utilizes the kinetic energy of water or liquid is called a liquid kinetic energy secondary utilization device. For example, the shower head commonly used in the bathroom is a device that can redevelop and utilize water kinetic energy.

[0006] In daily social activities, there are many tools that require water, such as showers.

[0007] With the advancement of technology, liquid kinetic energy showers have emerged that convert the kinetic energy of bathing water for reuse, that is, the kinetic energy of the flowing water in the shower head is converted into mechanical energy and output to the outside to do work. The specific method is to drive the impeller installed in the shower head through the flowing water flowing into the shower head, and further connect the impeller to an externally installed massage brush or wipe, so that the massage brush or wipe can be used to perform rotational massage and wiping services on the human skin.

[0008] While people use liquid kinetic energy showers to meet functional needs such as bathing spray, rotary massage and wiping, they have begun to put forward higher requirements for liquid kinetic energy showers. For example, they need a better user experience, which includes the pursuit of lightweight and thinner liquid kinetic energy showers.

[0009] However, the existing liquid kinetic energy secondary utilization devices, including the existing liquid kinetic energy showers, have the following problems in terms of lightness and thinning, especially in the process of thinning:

[0010] After the liquid kinetic energy secondary utilization device, including the liquid kinetic energy shower, is thinned, the liquid pressure in the cavity of the liquid kinetic energy secondary utilization device cannot be evenly distributed. At the same time, the noise will also increase during use, thereby affecting the use effect and use experience of the liquid kinetic energy secondary utilization device, such as the liquid kinetic energy shower, and thus losing the user's interest in use.

[0011] When the existing liquid kinetic energy secondary utilization device is in use, the high-speed liquid flowing into the liquid kinetic energy secondary utilization device, in addition to driving the impeller to rotate, mainly and preferentially acts on the circumference of the internal chamber of the liquid kinetic energy secondary utilization device to release the corresponding liquid pressure, but cannot achieve uniform distribution of liquid pressure in the internal chamber of the liquid kinetic energy secondary utilization device. In addition, since the high-speed liquid will rebound and collide with each other in the internal chamber of the liquid kinetic energy secondary utilization device, the uneven release of high-speed liquid pressure in the liquid kinetic energy secondary utilization device is further intensified, resulting in uneven distribution of liquid outlet pressure of the liquid kinetic energy secondary utilization device and excessive noise.

[0012] In the prior art, the method to solve the problems of uneven pressure distribution and excessive noise at the liquid outlet of the liquid kinetic energy secondary utilization device is usually to increase the height of the internal chamber of the liquid kinetic energy secondary utilization device, so that the internal chamber of the liquid kinetic energy secondary utilization device has sufficient volume to provide turbulent space for the high-speed liquid to make the pressure distribution of the liquid uniform and reduce the noise at the same time. However, such a result is obviously contrary to the pursuit of lightweight and thinning, especially thinning, of the liquid kinetic energy secondary utilization device, and therefore cannot meet the needs of users. Summary of the invention

[0013] In order to overcome the shortcomings of the prior art, the present invention provides a liquid kinetic energy secondary utilization device, the purpose of which is:

[0014] By utilizing the liquid kinetic energy secondary utilization device provided by the present invention, the kinetic energy of the liquid after being transported by an external power device is gathered and fully converted, thereby solving the problems of lightweighting and thinning of the liquid kinetic energy secondary utilization device, especially the uneven distribution of liquid outlet pressure generated in the thinning process and excessive noise during use, providing users with a better use experience, contributing to energy conservation and emission reduction, and creating a more colorful and beautiful life for people.

[0015] To achieve the above object, the present invention provides the following technical solutions:

[0016] A liquid kinetic energy secondary utilization device, comprising:

[0017] A working body having a work surface, an injection surface and a joint, wherein the injection surface is located on the opposite side of the work surface, the joint is arranged between the work surface and the injection surface, the joint is used to connect a pipeline, and the pipeline is used to input liquid into the interior of the working body, and the liquid has a certain kinetic energy after being transported by an external power device, wherein:

[0018] An impeller cavity is excavated on the working body on one side of the power output surface, the bottom of the impeller cavity is a partition with an axial hole and leakage holes, the leakage holes are distributed around the axial hole, an impeller is installed in the impeller cavity, and one end of the impeller shaft passes through the axial hole;

[0019] The impeller utilizes part of the kinetic energy of the liquid to rotate, and the rotating impeller outputs rotational mechanical energy to the outside through the wheel shaft passing through the shaft hole;

[0020] The end of the joint connected to the pipeline is provided with a liquid inlet hole, and the liquid inlet hole forms an energy gathering port for the liquid to flow out on the inner wall of the impeller cavity, the opening area of ​​the energy gathering port is smaller than the opening area of ​​the liquid inlet hole, and a guide groove is also provided on the flow path of the inner wall of the impeller cavity after the liquid flows out from the energy gathering port;

[0021] An annular groove is provided on the working body on one side of the injection surface, and the annular groove is connected to the guide groove;

[0022] The annular groove is also provided with an annular cover, and the annular cover is provided with liquid spraying holes, and the liquid with a certain kinetic energy is sprayed outwards through the liquid spraying holes.

[0023] Furthermore, a return-blocking mechanism is also provided on the guide groove and / or the annular groove.

[0024] Further:

[0025] The anti-return mechanism includes an anti-return protrusion and / or an anti-return baffle, wherein:

[0026] The anti-return protrusion is composed of one or more body structures gradually protruding inside the guide groove;

[0027] The return baffle is connected to the inner wall of the annular groove and is located at the connection point between the guide groove and the annular groove, and there is a gap between the return baffle and the inner wall of the annular groove for allowing the liquid to pass through.

[0028] Furthermore, a terminal end of the anti-return protrusion extends to the connecting point between the guide groove and the annular groove.

[0029] Furthermore, at least one row of diversion guide plates is disposed in the annular groove, and the diversion guide plates are used to divert and guide the fluid entering the annular groove from the guide groove.

[0030] Further:

[0031] The annular groove has the outer side of the inner wall of the impeller cavity as its inner ring wall, and the annular groove has the opposite side wall of the inner ring wall as its outer peripheral wall, and each of the flow dividing guide plates includes a flow guiding section and a flow diversion section;

[0032] Each of the guide sections starts from the outer peripheral wall at the connection point between the guide groove and the annular groove, and is arranged in a spreading manner with a gradually increasing curvature until it is connected with each corresponding guide section.

[0033] Furthermore, the height of the drainage section is increased in an inclined manner from its starting point until the connection with the diversion section reaches the same height as the diversion section.

[0034] Further:

[0035] The working body is also provided with a liquid pressure stabilizing structure;

[0036] The liquid pressure stabilizing structure comprises a groove bottom structure of the annular groove arranged in a stepwise manner, and a slope extending from the inner wall of the annular groove to the outer wall of the annular groove in an involute manner, wherein:

[0037] The groove bottom of the annular groove arranged in a stepwise manner is communicated with the guide groove at its lowest point;

[0038] The slope starts from the end of the guide section and ends at the highest point of the bottom of the annular groove and is inclined from the inner wall of the annular groove to the outer wall of the annular groove.

[0039] Further:

[0040] The groove wall of the guide groove located on one side of the inner wall of the impeller cavity is the guide groove bottom of the guide groove, the guide groove is set after a certain distance from the energy focusing port, and the guide groove bottom is set along the flow path of the liquid on the inner wall of the impeller cavity in an involute expansion manner;

[0041] The groove wall of the guide groove located on one side of the partition is the guide side wall of the guide groove, and the guide side wall is a slope wall inclined toward one side of the partition.

[0042] Furthermore, the impeller is installed in the impeller cavity in an eccentric manner and / or an inclined manner, wherein a critical point between the eccentrically installed impeller and the impeller cavity is located at the energy focusing port.

[0043] Furthermore, the opening height of the energy focusing port matches the installation height of the impeller, and the opening size of the energy focusing port matches the width of the impeller.

[0044] Further:

[0045] The ring cover is divided into a main liquid spraying area and a secondary liquid spraying area, wherein:

[0046] The liquid spraying sub-area is a fan-shaped area of ​​the ring cover corresponding to 20° on both sides of the first section, a fan-shaped area corresponding to 45° in front of the second section, and a fan-shaped area corresponding to 90° behind the second section. The first section is a section formed by the vertical center line of the connection between the guide groove and the annular groove and the central axis of the working body. The second section is a section formed by the vertical center line of the energy gathering port and the central axis of the working body. The front of the second section refers to the side where the liquid moves forward with the second section as the starting point, and the rear of the second section refers to the side opposite to the direction of the liquid moving forward with the second section as the starting point.

[0047] The main liquid spraying area is the area of ​​the ring cover except the secondary liquid spraying area;

[0048] The liquid spray holes are evenly distributed in the liquid spray main area and the liquid spray sub-area; or

[0049] The liquid spray holes are evenly distributed on the liquid spray main area, while no or only a small number of liquid spray holes are arranged in the liquid spray sub-area, and the small number of liquid spray holes arranged in the liquid spray sub-area are distributed on the inner side of the ring cover.

[0050] Furthermore, the ring cover and the working body are respectively provided with mutually cooperating alignment mechanisms, and the ring cover is connected to the working body by a snap-fitting manner or a threaded engagement manner to cover the annular groove.

[0051] Furthermore, a quick connector is provided on one end of the wheel axle passing through the shaft hole, and the quick connector is used to plug in a working component that works through the rotational mechanical energy output by the wheel axle.

[0052] Furthermore, a bearing seat is provided on the partition plate around the shaft hole, and the impeller has a bearing. The impeller is arranged inside the impeller cavity through the bearing installed on the bearing seat.

[0053] Furthermore, a cover is provided on the impeller chamber, and the impeller chamber is shielded by the cover.

[0054] Furthermore, the sealing cover is connected to the working body by means of a snap connection, a threaded engagement or a welding method.

[0055] Furthermore, the impeller is provided with a pressure balancing mechanism on one side of the cover, and the pressure balancing mechanism is a bowl-bottom-shaped or cylindrical depression provided in the middle of the impeller.

[0056] Furthermore, a bearing seat is provided on the cover, the impeller has a bearing, and the impeller is arranged inside the impeller cavity through the bearing installed on the bearing seat.

[0057] Further:

[0058] The bearing seat is formed by a plurality of protrusions arranged at intervals, the bearing is a sealed bearing, and the impeller is a hub-type closed impeller, wherein:

[0059] The hub-type closed impeller comprises blades with cover plates on both sides, an axle used for connecting with the sealed bearing, and spokes connecting the blades and the axle.

[0060] Furthermore, a seesaw is provided on the leakage hole, one end of the seesaw is connected to the partition, and the rest of the seesaw is tilted upward and cuts into the interior of the impeller cavity to form a lateral through-hole between the impeller cavity and the injection surface.

[0061] Furthermore, the partition located on one side of the injection surface and / or the area or part of the working body where no functional mechanism is set is also excavated with a weight-reducing hole or a weight-reducing groove, and the weight-reducing hole or the weight-reducing groove is used to reduce the overall weight of the working body.

[0062] Furthermore, the pressure of the liquid at the liquid inlet is above 0.3 MPa.

[0063] Furthermore, the diameter of the liquid spray hole is 0.4-1.2 mm.

[0064] Compared with the prior art, the beneficial effects and significant improvements of the present invention are:

[0065] 1) The present invention forms a liquid kinetic energy secondary utilization device that can gather the kinetic energy of the liquid after being transported by an external power device to perform liquid spraying operations and convert part of the kinetic energy of the liquid into mechanical energy output, and solves the problems of uneven distribution of liquid outlet pressure and excessive noise during use caused by lightweight and thinning, especially the thinning process, through a working body having a work surface, a spray surface and a liquid pipeline joint, wherein:

[0066] An impeller cavity for installing an impeller is excavated on the working body on the power output surface side, and the bottom of the impeller cavity is a partition with an axial hole and a leakage hole. The shaft at one end of the impeller passes through the axial hole to output rotational mechanical energy to the outside; a liquid inlet hole is provided inside the joint, and the liquid inlet hole forms an energy-gathering port for liquid outflow on the inner wall of the impeller cavity. The opening area of ​​the energy-gathering port is smaller than the opening area of ​​the liquid inlet hole, and a guide groove is also provided on the flow path of the inner wall of the impeller cavity after the liquid flows out from the energy-gathering port; an annular groove is provided on the working body on the injection surface side, and the guide groove is connected with the annular groove. A ring cover with spray holes distributed on the annular groove is provided, and liquid with a certain kinetic energy can be sprayed outward through the spray holes;

[0067] 2) In the liquid kinetic energy secondary utilization device provided by the present invention, since the opening area of ​​the energy gathering port is smaller than the opening area of ​​the liquid inlet hole, after the liquid with a certain kinetic energy enters the working body, the liquid speed can be increased at the energy gathering port, thereby achieving the purpose of better spraying the liquid outward and driving the impeller to rotate to output mechanical energy outward, and fully utilizing the kinetic energy of the liquid after being transported by the external power equipment;

[0068] 3) In the liquid kinetic energy secondary utilization device provided by the present invention, since the guide groove and the annular groove are arranged on the line through which the liquid flows, the flow of the liquid entering the working body becomes regular and turbulence is not likely to occur, thereby greatly reducing the mutual collision of the liquids. In this way, not only the noise of the liquid flow is reduced, but also the kinetic energy loss of the liquid is reduced. As a result, the liquid flowing through the annular groove has a relatively balanced liquid pressure in different areas, achieving the purpose of evenly distributing the liquid pressure and spraying it outward;

[0069] 4) The liquid kinetic energy secondary utilization device provided by the present invention can effectively solve the problems of the liquid kinetic energy secondary utilization device being lightweight and thinned, especially the uneven distribution of liquid pressure and excessive noise during use generated during the thinning process, which can provide users with a better use experience, contribute to energy conservation and emission reduction, and create a more colorful and beautiful life for people;

[0070] 5) The liquid kinetic energy secondary utilization device provided by the present invention has a clear and unique idea for solving technical problems, is highly creative and inspiring, and adopts novel and ingenious technical means, and has a compact structure, is easy to use, and works reliably. Therefore, it has great promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention.

[0072] Obviously, the drawings described below are only drawings of some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, but these other drawings also belong to the drawings required for use in the embodiments of the present invention.

[0073] Figure 1 A schematic diagram of the three-dimensional structure of a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention;

[0074] Figure 2 A schematic diagram of the three-dimensional structure of a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention on one side of its power output surface;

[0075] Figure 3 A schematic diagram of an exploded three-dimensional structure of a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention;

[0076] Figure 4 A schematic diagram of the three-dimensional structure of a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention on one side of its injection surface;

[0077] Figure 5 A schematic diagram of the planar structure of the injection surface of a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention;

[0078] Figure 6 A schematic diagram of the three-dimensional structure and installation position of another ring cover in a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention;

[0079] Figure 7 A schematic diagram of the three-dimensional structure and installation position of another ring cover in a liquid kinetic energy secondary utilization device provided in an embodiment of the present invention.

[0080] In the figure:

[0081] 100-working body;

[0082] 110-power outlet surface, 111-impeller cavity, 112-shaft hole, 113-partition plate, 114-rocker plate;

[0083] 120-injection surface, 121-annular groove, 1211-inner ring wall, 1212-outer peripheral wall, 122-flow diversion guide plate, 1221-flow guide section, 1222-flow diversion section;

[0084] 130-connector, 131-liquid inlet, 132-energy gathering port, 133-guiding groove, 1331-guiding groove bottom, 1332-guiding side wall;

[0085] 140- impeller, 141- axle, 142- bearing, 143- protrusion;

[0086] 150-ring cover, 1501-liquid spraying main area, 1502-liquid spraying secondary area, 151-liquid spraying hole;

[0087] 160-connection point, 161-return baffle;

[0088] 171-slope;

[0089] 180-capping;

[0090] 191-weight reduction fixing hole, 192-weight reduction groove;

[0091] α-first cross section, β-second cross section. DETAILED DESCRIPTION

[0092] In order to make the purpose, technical solution, beneficial effects and significant progress of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the drawings provided in the embodiments of the present invention. Obviously, all the described embodiments are only partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0093] It should be noted that:

[0094] The terms "first", "second" and "third" (if any) in the specification and claims of the present invention and the drawings of the embodiments of the present invention are only used to distinguish different objects rather than to describe a specific order; in addition, the term "comprise" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or apparatus comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes other steps or units inherent to these processes, methods, products or apparatuses.

[0095] It should be understood that, in the description of the embodiments of the present invention, terms such as "upper", "lower", "top", "bottom" and other indicative orientation or position words are only based on the orientation or position relationship shown in the drawings of the embodiments of the present invention. They are for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying the specific orientation, specific orientation structure and operation that the device or element described must have. Therefore, they should not be understood as limiting the present invention.

[0096] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "connection" and "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a movable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0097] It should also be noted that:

[0098] The following specific embodiments may be combined with each other, and the same or similar concepts or processes therein may not be described in detail in some embodiments.

[0099] The technical solution of the present invention is described in detail below with specific embodiments.

[0100] Example

[0101] This embodiment provides a liquid kinetic energy secondary utilization device that can gather liquid kinetic energy to perform liquid spraying operations and convert part of the liquid's kinetic energy into mechanical energy for external output.

[0102] like Figure 1 A three-dimensional structural diagram of a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention is shown as follows:

[0103] The liquid kinetic energy secondary utilization device provided in this embodiment includes a working body 100;

[0104] The working body 100 includes a work output surface 110 and an injection surface 120 located on the opposite side of the work output surface. A joint 130 is also provided between the work output surface 110 and the injection surface 120 to connect with a pipeline (not shown in the figure) for inputting liquid into the interior of the working body 100, wherein the liquid has a certain kinetic energy after being transported by an external power device (not shown in the figure).

[0105] like Figure 2 A schematic diagram of the three-dimensional structure of a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention on one side of the power output surface, Figure 3 The exploded three-dimensional structure diagram of a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention is shown as follows:

[0106] An impeller cavity 111 is excavated on the working body 100 on one side of the power output surface 110. The bottom of the impeller cavity 111 is a partition 113 with an axial hole 112 and leakage holes. The leakage holes are distributed around the axial hole 112. An impeller 140 is installed in the impeller cavity 111, and one end of the wheel shaft 141 of the impeller 140 passes through the axial hole 112.

[0107] The impeller 140 utilizes part of the kinetic energy of the liquid to rotate, and the rotating impeller 140 outputs rotational mechanical energy to the outside through the wheel shaft 141 passing through the shaft hole 112;

[0108] A liquid inlet hole 131 is provided at the end of the joint 130 of the connecting pipe. The liquid inlet hole 131 forms an energy-gathering port 132 on the inner wall of the impeller chamber 111 for liquid to flow out. The opening area of ​​the energy-gathering port 132 is smaller than the opening area of ​​the liquid inlet hole 131, and a guide groove 133 is also provided on the flow route of the inner wall of the impeller chamber 111 after the liquid flows out from the energy-gathering port 132.

[0109] like Figure 4 A schematic diagram of the three-dimensional structure of a liquid kinetic energy secondary utilization device on one side of its injection surface provided by an embodiment of the present invention, Figure 5 A schematic diagram of the planar structure of the injection surface of a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention is shown as follows:

[0110] An annular groove 121 is formed on the working body 100 at one side of the injection surface 120 , and the annular groove 121 is communicated with the guide groove 133 .

[0111] Combination Figure 3 , you can also see:

[0112] A ring cover 150 is also provided on the annular groove 121 . Liquid spray holes 151 are distributed on the ring cover 150 . Liquid with a certain kinetic energy is sprayed outward through the liquid spray holes 151 .

[0113] From the above description, we can see that:

[0114] First, this embodiment forms a liquid kinetic energy secondary utilization device that can gather the kinetic energy of the liquid after being transported by the external power equipment to perform liquid spraying operations and convert part of the kinetic energy of the liquid into mechanical energy output, and solves the problems of uneven distribution of liquid outlet pressure and excessive noise during use caused by lightweight and thinning, especially the thinning process, through a working body having a work surface, a spray surface and a liquid pipeline joint, wherein:

[0115] An impeller cavity for installing an impeller is excavated on the working body on the power output surface side, and the bottom of the impeller cavity is a partition with an axial hole and a leakage hole. The shaft at one end of the impeller passes through the axial hole to output rotational mechanical energy to the outside; a liquid inlet hole is provided inside the joint, and the liquid inlet hole forms an energy-gathering port for liquid outflow on the inner wall of the impeller cavity. The opening area of ​​the energy-gathering port is smaller than the opening area of ​​the liquid inlet hole, and a guide groove is also provided on the flow path of the inner wall of the impeller cavity after the liquid flows out from the energy-gathering port; an annular groove is provided on the working body on the injection surface side, and the guide groove is connected with the annular groove. A ring cover with spray holes distributed on the annular groove is provided, and liquid with a certain kinetic energy can be sprayed outward through the spray holes;

[0116] Secondly, in the liquid kinetic energy secondary utilization device provided in this embodiment, since the opening area of ​​the energy gathering port is smaller than the opening area of ​​the liquid inlet hole, after the liquid with a certain kinetic energy enters the working body, the kinetic energy of the liquid can be gathered on the energy gathering port, thereby achieving the purpose of better spraying the liquid outward and driving the impeller to rotate to output mechanical energy outward, and fully utilizing the kinetic energy of the liquid after being transported by the external power equipment;

[0117] Again, in the liquid kinetic energy secondary utilization device provided in this embodiment, since guide grooves and annular grooves are provided on the line through which the liquid flows, the flow of the liquid entering the working body becomes regular and is not prone to turbulence, thereby greatly reducing the mutual collision of the liquids. In this way, not only the noise of the liquid flow is reduced, but also the kinetic energy loss of the liquid is reduced. As a result, the liquid flowing through the annular groove has a more balanced liquid pressure in different areas, thereby achieving the purpose of evenly distributed liquid pressure and spraying it outward.

[0118] From this, we can see that:

[0119] The liquid kinetic energy secondary utilization device provided in this embodiment can gather the kinetic energy of the liquid after being transported by an external power device to perform liquid spraying operations and convert part of the kinetic energy of the liquid into mechanical energy output. It also solves the problem of uneven distribution of liquid outlet pressure and excessive noise during use caused by the liquid kinetic energy secondary utilization device during its lightweight and thinning, especially the thinning process. It can provide users with a better use experience, contribute to energy conservation and emission reduction, and create a more colorful and beautiful life for people.

[0120] As an optimized implementation, further, a return resistance mechanism is provided on the guide groove 133 and / or the annular groove 121 .

[0121] from Figure 4 and Figure 5 You can see:

[0122] The anti-return mechanism includes an anti-return baffle 161 and / or an anti-return protrusion (not shown in the figure), wherein:

[0123] The anti-return protrusion (not shown in the figure) is composed of one or more gradually protruding structures inside the guide groove 133;

[0124] The return baffle 161 is connected to the inner wall of the annular groove 121 and is located at the connecting point 160 between the guide groove 133 and the annular groove 121 . A gap is provided between the return baffle 161 and the inner wall of the annular groove 121 for fluid to pass through.

[0125] Furthermore, the terminal end of the anti-return protrusion extends to the connecting point 160 between the guide groove 133 and the annular groove 121 .

[0126] After the anti-return mechanism is set up, on the one hand, the liquid flowing out of the guide groove can be diverted, and on the other hand, the liquid can be guided to enter the annular groove in a laminar flow manner to avoid the liquid from generating turbulence and colliding with each other too early, which not only loses kinetic energy but also generates noise. At the same time, it can also prevent the reverse reflux of the liquid, causing further turbulence of the liquid, further loss of kinetic energy and further increase in noise.

[0127] from Figure 5 In the , you can further see:

[0128] At least one row of diverter guide plates 122 is also disposed in the annular groove 121 . The diverter guide plates 122 are used to divert and guide the fluid entering the annular groove 121 from the guide groove 133 .

[0129] Further, from Figure 5 You can also see:

[0130] The annular groove 121 has the outer side of the inner wall of the impeller chamber 111 as its inner ring wall 1211, and the annular groove 121 has the opposite side wall of the inner ring wall 1211 as its outer peripheral wall 1212, and each flow dividing guide plate 122 includes a flow guiding section 1221 and a flow guiding section 1222;

[0131] Each diversion section 1222 starts from the outer peripheral wall 1212 of the connection point 160 between the annular groove 121 and the diversion groove 133 , and is arranged in a spreading manner with a gradually increasing curvature until it is connected with each corresponding diversion section 1221 .

[0132] As a further optimization:

[0133] The height of the drainage section 1222 is increased in an inclined manner from its starting point until the connection with the drainage section 1221 reaches the same height as the drainage section 1221 .

[0134] After the flow dividing guide plate is provided, the liquid entering the annular groove can be further guided to maintain its laminar flow state within a certain flow route, thereby avoiding the loss of kinetic energy and the generation of noise caused by the collision of the liquids.

[0135] As a further optimization, Figure 5 As shown:

[0136] The working body 100 is also provided with a liquid pressure stabilizing structure;

[0137] The liquid pressure stabilizing structure includes a groove bottom structure of the annular groove arranged in a stepwise manner, and a slope 171 extending from the inner wall of the annular groove 121 to the outer wall of the annular groove 121 in an involute manner, wherein:

[0138] The bottom of the annular groove 121 arranged in a gradually rising manner is communicated with the guide groove 133 at its lowest point;

[0139] The slope 171 starts near the end of the guide section 1221 and ends at the highest point of the bottom of the annular groove 121 , and slopes from the inner circumferential wall 1211 of the annular groove 121 to the outer circumferential wall 1212 of the annular groove 121 .

[0140] After a liquid pressure stabilizing structure is further provided in the annular groove, after the liquid enters a slightly farther area of ​​the annular groove through the guide groove, not only can the liquid maintain a corresponding pressure because the bottom of the annular groove is gradually lifted and its cross-section gradually becomes smaller, but also after the liquid enters the slope section, the slope causes the cross-section of the annular groove to further gradually decrease, allowing the liquid to maintain a corresponding pressure. Moreover, since the slope is inclined from the inner wall of the annular groove to the outer wall of the annular groove, the liquid can be guided to flow in a tangential manner in the final stage of its flow in the annular groove, so that the liquid does not lose its kinetic energy due to the need to adapt to the curvature of the annular groove, thereby ensuring that the liquid pressure is evenly distributed in the process of flowing through the entire annular groove and reducing the noise of the liquid flow.

[0141] As an optimization, Figure 2 As shown:

[0142] The groove wall of the guide groove 133 located on one side of the inner wall of the impeller chamber 111 is the guide groove bottom 1331 of the guide groove 133. The guide groove 133 is set after a certain distance from the energy focusing port 132, and the guide groove bottom 1331 is set along the flow path of the liquid on the inner wall of the impeller chamber 111 in an involute expansion manner;

[0143] The groove wall of the guide groove 133 located at one side of the partition plate 113 is a guide side wall 1332 of the guide groove 133 , and the guide side wall 1332 is a slope wall inclined toward one side of the partition plate 113 .

[0144] With such a design, on the one hand, the energy gathering port can be utilized to gather the kinetic energy of the liquid, and on the other hand, the liquid flowing out of the energy gathering port can act on the impeller as quickly as possible, reducing the loss of kinetic energy of the liquid due to the long flow path in the working body, thereby obtaining more converted mechanical energy for external output, meeting the needs of performing other functional applications using the liquid kinetic energy secondary utilization device provided in this embodiment.

[0145] As an optional facility:

[0146] The impeller 140 is installed in the impeller chamber 111 in an eccentric manner and / or an inclined manner, wherein the critical point between the eccentrically installed impeller 140 and the impeller chamber 111 is located at the energy focusing port 132 .

[0147] Experimental proof:

[0148] The eccentric installation of the impeller can better utilize all the liquid flowing out of the energy-gathering port and the kinetic energy of the liquid, reduce the loss of liquid kinetic energy caused by the liquid flowing out of the gap between the impeller and the impeller cavity without doing work, and even cause turbulence in the gap between the impeller and the impeller cavity, affecting the rotation of the impeller;

[0149] When the impeller is installed inside the impeller cavity in an inclined manner, the impeller can rotate more smoothly, with less noise and greater power output under the push of the liquid.

[0150] Further, as an optional implementation:

[0151] The opening height of the energy focusing port 132 matches the installation height of the impeller 140 , and the opening size of the energy focusing port 132 matches the width of the impeller 140 .

[0152] The opening height of the energy focusing port matches the installation height of the impeller, and the opening size of the energy focusing port matches the width of the impeller. Experiments have shown that the kinetic energy of the liquid can be better utilized.

[0153] As an optional implementation:

[0154] like Figure 6 A schematic diagram of the three-dimensional structure and installation position of another ring cover in a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention, Figure 7 A schematic diagram of the three-dimensional structure and installation position of another ring cover in a liquid kinetic energy secondary utilization device provided by an embodiment of the present invention is shown as follows:

[0155] The ring cover 150 is divided into a main liquid spraying area 1501 and a secondary liquid spraying area 1502, wherein:

[0156] The liquid spraying sub-area 1502 is a fan-shaped area of ​​the ring cover 150 corresponding to 20° on both sides of the first section α, a fan-shaped area corresponding to 45° in front of the second section β, and a fan-shaped area corresponding to 90° behind the second section β. The first section α is a section formed by a vertical center line of the connection 160 between the guide groove 133 and the annular groove 121 and the central axis of the working body 100. The second section β is a section formed by a vertical center line of the energy gathering port 132 and the central axis of the working body 100. The front of the second section refers to the side where the liquid advances with the second section α as the starting point, and the rear of the second section refers to the side opposite to the direction of liquid advancement with the second section β as the starting point.

[0157] The main liquid spraying area 1501 is the area of ​​the ring cover 150 except the secondary liquid spraying area 1502.

[0158] like Figure 1 and Figure 3 As shown:

[0159] The liquid spraying holes 151 are evenly distributed in the liquid spraying main area 1501 and the liquid spraying sub-area 1502; or

[0160] like Figure 6 As shown:

[0161] The liquid spray holes 151 are evenly distributed in the liquid spray main area 1501, while no liquid spray hole 15 is provided in the liquid spray sub-area 1502;

[0162] In this way, it is ensured that the pressure distribution of the liquid sprayed from the spray hole is not uneven due to the turbulence of the liquid flow in the starting area and the end area of ​​the liquid flow in the annular groove, and the area in the middle where the water flow is easily turbulent.

[0163] like Figure 7 As shown:

[0164] The liquid spray holes 151 are evenly distributed on the liquid spray main area 1501, and a small number of liquid spray holes 151 are arranged in the liquid spray sub-area 1502, and the small number of liquid spray holes 151 arranged in the liquid spray sub-area 1502 are distributed on the inner side of the ring cover 150;

[0165] In this way, the start area and the end area where the liquid flows in the annular groove, as well as the middle area where the water flow is easily disturbed, are reduced, and the liquid distribution of the liquid sprayed from the spray hole has a large drop due to the turbulence of the liquid flow.

[0166] As a further optimization, in this embodiment:

[0167] The ring cover 150 and the working body 100 may also be provided with mutually cooperating alignment mechanisms (not shown in the figure), and the ring cover 150 is connected to the working body 100 by snap-fitting or threaded engagement to cover the annular groove 121;

[0168] A quick connector (not shown in the figure) may also be provided on one end of the axle 141 passing through the shaft hole 112 , and the quick connector is used to plug in a working component (not shown in the figure) that works by the rotational mechanical energy output by the axle 141 .

[0169] As an optional implementation, Figure 3 As shown, in this embodiment:

[0170] A bearing seat is also provided on the partition plate 113 around the shaft hole 112, and the impeller 140 has a bearing 142. The impeller 140 is arranged inside the impeller cavity 111 through the bearing 142 mounted on the bearing seat;

[0171] A cover 180 is also provided on the impeller chamber 111, and the impeller chamber 111 is shielded by the cover 180;

[0172] The sealing cover 180 is connected to the working body 100 by snap-fitting, threaded engagement or welding.

[0173] As a further improvement, in this embodiment:

[0174] Under the premise of having the cover 180 , a pressure balancing mechanism (not shown in the figure) may be further provided on one side of the impeller 140 located at the cover 180 . The pressure balancing mechanism is a bowl-bottom-shaped or cylindrical depression provided in the middle of the impeller 140 .

[0175] By setting up a pressure balancing mechanism, the pressure on both sides of the impeller can maintain a dynamic balance under the pressure of the liquid on one side of the pressure balancing mechanism, so that the operation of the impeller is smoother and the noise during operation is lower.

[0176] Further:

[0177] A bearing seat (not shown in the figure) may also be provided on the cover 180 . The impeller 140 has a bearing 142 . The impeller 140 is arranged inside the impeller chamber 111 via the bearing 142 mounted on the bearing seat.

[0178] Further, such as Figure 2 As shown:

[0179] The bearing seat can be formed by enclosing a plurality of protrusions 143 arranged at intervals, the bearing 142 can be a sealed bearing, and the impeller 140 can be a hub-type closed impeller, wherein:

[0180] The hub-type closed impeller includes blades with cover plates on both sides, an axle for connecting with a sealed bearing, and spokes connecting the blades to the axle.

[0181] The use of sealed bearings can prevent the particles in the liquid from damaging the bearings, avoid malfunction of the liquid kinetic energy secondary utilization device, and thus extend the service life of the liquid kinetic energy secondary utilization device;

[0182] The hub-type closed impeller can not only reduce the weight of the entire impeller, but also contribute to the lightweight and thinning of the liquid kinetic energy secondary utilization device. At the same time, experiments have shown that the hub-type closed impeller connected by spokes runs more smoothly and with less noise.

[0183] Further, in this embodiment, if Figure 3 , Figure 4 As shown:

[0184] A seesaw 114 is also provided on the leakage hole. One end of the seesaw 114 is connected to the partition 113 , and the rest of the seesaw 114 is tilted upward and cuts into the interior of the impeller cavity 111 to form a lateral through hole between the impeller cavity 111 and the injection surface 120 .

[0185] from Figure 3 , Figure 4As can be seen from the figure, the seesaw 114 in this embodiment is heart-shaped.

[0186] After the seesaw is set up, on the one hand, it can ensure that the liquid in the impeller cavity can be discharged in a timely and smooth manner; on the other hand, it can maintain a certain liquid pressure in the impeller cavity to ensure that the liquid kinetic energy secondary utilization device works better.

[0187] Furthermore, as a lightweight method, e.g. Figure 3 , Figure 4 As shown, in this embodiment:

[0188] The partition 113 on one side of the injection surface 120 and / or the area or part of the working body 100 where no functional mechanism is set are also excavated with weight-reducing holes 191 or weight-reducing grooves 192, which are used to reduce the overall weight of the working body 100.

[0189] Normally, in the liquid kinetic energy secondary utilization device provided in this embodiment, the pressure of the liquid at the liquid inlet 131 should be above 0.3 MPa.

[0190] Of course, under certain conditions, as long as the components of each part of the liquid kinetic energy secondary utilization device can work normally, the pressure of the liquid at the liquid inlet hole may not be within the range of the above-mentioned liquid pressure.

[0191] Typically, the diameter of the liquid spray hole 151 can be designed to be 0.4-1.2 mm.

[0192] In summary, we can see that:

[0193] The liquid kinetic energy secondary utilization device provided in the embodiment of the present invention can well gather the kinetic energy of the liquid after being transported by an external power device to complete the liquid spraying operation and convert part of the kinetic energy of the liquid into mechanical energy output by arranging corresponding mechanisms and components on the working body, and well solves the problems of uneven distribution of liquid outlet pressure and excessive noise during use generated in the process of lightweighting and thinning, especially thinning. It can provide users with a better use experience, contribute to energy conservation and emission reduction, and create a more colorful and beautiful life for people. The ideas for solving technical problems are clear and unique, highly creative and inspiring. The technical means adopted are novel and ingenious, unique and ingenious. The device has a compact structure, is easy to use, and works reliably. Therefore, it has great promotion and application value.

[0194] In the description of the above manual:

[0195] The terms "this embodiment", "an embodiment of the present invention", "as shown in ...", "further", "a further improved technical solution", etc., mean that the specific features, structures, materials or characteristics described in the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example, and the specific features, structures, materials or characteristics described may be combined or combined in any one or more embodiments or examples in a suitable manner;

[0196] In addition, under the premise that no contradiction occurs, a person of ordinary skill in the art may combine or combine different embodiments or examples and features of different embodiments or examples described in this specification.

[0197] Finally, it should be noted that:

[0198] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. The non-essential improvements, adjustments or replacements made by those skilled in the art based on the contents of this specification are all within the scope of protection required by the present invention.

Claims

1. A liquid kinetic energy secondary utilization device, characterized in that: include: A working body having a work surface, an injection surface and a joint, wherein the injection surface is located on the opposite side of the work surface, the joint is arranged between the work surface and the injection surface, the joint is used to connect a pipeline, and the pipeline is used to input liquid into the interior of the working body, and the liquid has a certain kinetic energy after being transported by an external power device, wherein: An impeller cavity is excavated on the working body on one side of the power output surface, the bottom of the impeller cavity is a partition with an axial hole and leakage holes, the leakage holes are distributed around the axial hole, an impeller is installed in the impeller cavity, and one end of the impeller shaft passes through the axial hole; The impeller utilizes part of the kinetic energy of the liquid to rotate, and the rotating impeller outputs rotational mechanical energy to the outside through the wheel shaft passing through the shaft hole; The end of the joint connected to the pipeline is provided with a liquid inlet hole, and the liquid inlet hole forms an energy gathering port for the liquid to flow out on the inner wall of the impeller cavity, the opening area of ​​the energy gathering port is smaller than the opening area of ​​the liquid inlet hole, and a guide groove is also provided on the flow path of the inner wall of the impeller cavity after the liquid flows out from the energy gathering port; An annular groove is provided on the working body on one side of the injection surface, and the annular groove is connected to the guide groove; The annular groove is also provided with an annular cover, and the annular cover is provided with liquid spraying holes, and the liquid with a certain kinetic energy is sprayed outwards through the liquid spraying holes; The guide groove and / or the annular groove is also provided with a back-stop mechanism; The anti-return mechanism includes an anti-return protrusion and / or an anti-return baffle, wherein: The anti-return protrusion is composed of one or more body structures gradually protruding inside the guide groove; The return baffle is connected to the inner wall of the annular groove and is located at the connection point between the guide groove and the annular groove, and there is a gap between the return baffle and the inner wall of the annular groove for allowing the liquid to pass through; At least one row of flow diversion guide plates is also arranged in the annular groove, and the flow diversion guide plates are used to divert and guide the fluid entering the annular groove from the guide groove.

2. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The terminal end of the anti-return protrusion extends to the connecting point between the guide groove and the annular groove.

3. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The annular groove has the outer side of the inner wall of the impeller cavity as its inner ring wall, and the annular groove has the opposite side wall of the inner ring wall as its outer peripheral wall, and each of the flow dividing guide plates includes a flow guiding section and a flow diversion section; Each of the guide sections starts from the outer peripheral wall at the connection point between the guide groove and the annular groove, and is arranged in a spreading manner with a gradually increasing curvature until it is connected with each corresponding guide section.

4. The liquid kinetic energy secondary utilization device as claimed in claim 3, characterized in that: The height of the drainage section is increased in an inclined manner from its starting point until the connection with the diversion section reaches the same height as the diversion section.

5. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The working body is also provided with a liquid pressure stabilizing structure; The liquid pressure stabilizing structure comprises a groove bottom structure of the annular groove arranged in a stepwise manner, and a slope extending from the inner wall of the annular groove to the outer wall of the annular groove in an involute manner, wherein: The groove bottom of the annular groove arranged in a stepwise manner is communicated with the guide groove at its lowest point; The slope starts from the end of the guide section and ends at the highest point of the bottom of the annular groove and is inclined from the inner wall of the annular groove to the outer wall of the annular groove.

6. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The groove wall of the guide groove located on one side of the inner wall of the impeller cavity is the guide groove bottom of the guide groove, the guide groove is set after a certain distance from the energy focusing port, and the guide groove bottom is set along the flow path of the liquid on the inner wall of the impeller cavity in an involute expansion manner; The groove wall of the guide groove located on one side of the partition is the guide side wall of the guide groove, and the guide side wall is a slope wall inclined toward one side of the partition.

7. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The impeller is installed in the impeller cavity in an eccentric manner and / or an inclined manner, wherein a critical point between the eccentrically installed impeller and the impeller cavity is located at the energy focusing port.

8. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The opening height of the energy gathering port matches the installation height of the impeller, and the opening size of the energy gathering port matches the width of the impeller.

9. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The ring cover is divided into a main liquid spraying area and a secondary liquid spraying area, wherein: The liquid spraying sub-area is a fan-shaped area of ​​the ring cover corresponding to 20° on both sides of the first section, a fan-shaped area corresponding to 45° in front of the second section, and a fan-shaped area corresponding to 90° behind the second section. The first section is a section formed by the vertical center line of the connection between the guide groove and the annular groove and the central axis of the working body. The second section is a section formed by the vertical center line of the energy gathering port and the central axis of the working body. The front of the second section refers to the side where the liquid moves forward with the second section as the starting point, and the rear of the second section refers to the side opposite to the direction of the liquid moving forward with the second section as the starting point. The main liquid spraying area is the area of ​​the ring cover except the secondary liquid spraying area; The liquid spray holes are evenly distributed in the liquid spray main area and the liquid spray sub-area; or The liquid spray holes are evenly distributed on the liquid spray main area, while no or only a small number of liquid spray holes are arranged in the liquid spray sub-area, and the small number of liquid spray holes arranged in the liquid spray sub-area are distributed on the inner side of the ring cover.

10. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The ring cover and the working body are respectively provided with mutually matching alignment mechanisms, and the ring cover is connected to the working body by a snap-fitting manner or a threaded engagement manner to cover the annular groove.

11. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: A quick connector is also provided on one end of the wheel axle passing through the shaft hole, and the quick connector is used to plug in a working component that works through the rotational mechanical energy output by the wheel axle.

12. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: A bearing seat is also provided on the partition plate around the shaft hole. The impeller has a bearing. The impeller is arranged inside the impeller cavity through the bearing installed on the bearing seat.

13. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The impeller chamber is also provided with a cover, and the impeller chamber is shielded by the cover.

14. The liquid kinetic energy secondary utilization device according to claim 13, characterized in that: The sealing cover is connected to the working body by means of a snap connection, a threaded engagement or a welding method.

15. The liquid kinetic energy secondary utilization device according to claim 13, characterized in that: The impeller is also provided with a pressure balancing mechanism on one side of the cover, and the pressure balancing mechanism is a bowl-bottom-shaped or cylindrical depression arranged in the middle of the impeller.

16. The liquid kinetic energy secondary utilization device according to claim 13, characterized in that: The cover is also provided with a bearing seat, the impeller is provided with a bearing, and the impeller is arranged inside the impeller cavity through the bearing mounted on the bearing seat.

17. The liquid kinetic energy secondary utilization device according to claim 12 or 16, characterized in that: The bearing seat is formed by a plurality of protrusions arranged at intervals, the bearing is a sealed bearing, and the impeller is a hub-type closed impeller, wherein: The hub-type closed impeller comprises blades with cover plates on both sides, an axle used for connecting with the sealed bearing, and spokes connecting the blades and the axle.

18. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: A seesaw is also provided on the leakage hole, one end of the seesaw is connected to the partition, and the rest of the seesaw is tilted upward and cuts into the interior of the impeller cavity to form a lateral through hole between the impeller cavity and the injection surface.

19. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The partition located on one side of the injection surface and / or the area or part of the working body where no functional mechanism is set is also excavated with a weight-reducing hole or a weight-reducing groove, and the weight-reducing hole or the weight-reducing groove is used to reduce the overall weight of the working body.

20. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The pressure of the liquid at the liquid inlet is above 0.3 MPa.

21. The liquid kinetic energy secondary utilization device according to claim 1, characterized in that: The diameter of the liquid spray hole is 0.4-1.2 mm.

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