Impeller guide vane, dewatering impeller and water separator

Abstract

The utility model provides an impeller guide vane, a dewatering impeller and a water separator, the impeller guide vane comprises a first vane part and a second vane part, and air enters the impeller guide vane through one end of the first vane part; the other end of the first blade part is matched with one end of the second blade part, so that at least one part of air at the other end of the first blade part can flow to one end of the second blade part, and the air is discharged from the other end of the second blade part through guiding of the second blade part; and the second blade part can rotate relative to the first blade part, so that the blade outlet angle of the impeller guide blade is adjustable. According to the technical scheme, the blade outlet angle of the impeller guide blade is adjustable by rotating the second blade part, so that the change of ambient air humidity can be coped, and water separation is always in a better working state.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water separation technical field, concretely relates to a kind of impeller guide vane, water removal impeller and water separator. BACKGROUND

[0002] The existing water separator utilizes water removal impeller to make wet air rotate, and water droplet is thrown to the pipe wall of water removal impeller to form liquid film, and the liquid film flows to water removal device under the push of air to remove water.The water removal efficiency and flow resistance are closely related to the blade outlet angle of impeller, and the existing water separator, the impeller guide vane of water removal impeller is fixed, so that the blade outlet angle of impeller guide vane is also fixed, and the change of environmental air humidity cannot be coped with. SUMMARY

[0003] Therefore, the utility model provides a kind of impeller guide vane, water removal impeller and water separator, and the technical problem that water removal impeller in prior art cannot be coped with the change of environmental air humidity can be solved.

[0004] To solve the above problems, the utility model provides a kind of impeller guide vane, which comprises a first blade part and a second blade part, and the impeller guide vane is inhaled air through one end of the first blade part;The other end of the first blade part cooperates with one end of the second blade part, so that at least part of the wind of the other end of the first blade part can flow to one end of the second blade part, to be out of wind from the other end of the second blade part by the guidance of the second blade part;

[0005] Wherein, the second blade part can rotate relative to the first blade part, so that the blade outlet angle of the impeller guide vane can be adjusted.

[0006] In some embodiments, the other end of the first blade part is in contact with one end of the second blade part, and the two are seamlessly matched.

[0007] In some embodiments, the second blade part can be relatively fixed with the first blade part at the position after rotation.

[0008] In some embodiments, the impeller guide vane further comprises a motor, and the output shaft of the motor is connected with one end of the second blade part to drive the second blade part to rotate relative to the first blade part.

[0009] Wherein, the motor is a motor with self-locking function, and the motor keeps the second blade part relatively fixed with the first blade part at the position after rotation by self-locking.

[0010] In some embodiments, the second blade part rotates relative to the first blade part through damping shaft, and the second blade part is relatively fixed with the first blade part at the position after rotation through the damping of the damping shaft.

[0011] The utility model also provides a kind of water removal impeller, it includes cylinder and the impeller guide vane described in any one of the above;Wherein, the first blade part and second blade part are all arranged in the cylinder, and the first blade part is fixedly connected with the cylinder.

[0012] In some embodiments, when the impeller guide vane includes motor, and the output shaft of the motor is connected with one end of the second blade part, to drive the second blade part relative to the first blade part rotation, the shell of the motor is fixed on the cylinder.

[0013] In some embodiments, when the second blade part rotates relative to the first blade part by damping pivot, the damping pivot is rotatably arranged on the cylinder, and the damping pivot is relatively fixed with the second blade part.

[0014] The utility model also provides a kind of water separator, it includes water removal device and the water removal impeller described in the above, the water removal device has outer tube and inner tube, the outer tube has opposite first end and second end, the water removal device is received by the first end opening the fluid discharged by the water removal impeller;Wherein, the direction along the second end to the first end is first direction, the distance between the inner tube outer wall and the outer tube inner wall gradually increases along the first direction, to form the gap that opening gradually expands outward between them along the first direction;

[0015] Wherein, the gap is closed in the side close to the second end, and the inner tube outer wall is equipped with the air hole that communicates the gap and the inside of the inner tube.

[0016] In some embodiments, the side of the inner tube away from the second end has necking structure.

[0017] In some embodiments, the air hole has more than two groups, and the air hole of more than two groups is sequentially arranged along the second direction;The second direction is opposite to the first direction;Wherein,

[0018] The outer diameter of each group of air holes gradually decreases along the second direction;And / or, the arrangement density of each group of air holes gradually increases along the second direction.

[0019] In some embodiments, when the outer diameter of each group of air holes gradually decreases along the second direction, the air hole is two groups, and is first group air hole and second group air hole, the first group air hole and the second group air hole are sequentially arranged along the second direction;

[0020] Wherein, the hole diameter D1 of each air hole in the first group air hole is 3-5mm, and the hole diameter D2 of each air hole in the second group air hole is 2-3mm.

[0021] In some embodiments, the air outlet side of the inner cylinder is connected with an air outlet cylinder, the inner wall of the air outlet cylinder is provided with annular protrusions, the number of the annular protrusions is two or more, and the annular protrusions are arranged in sequence and at intervals along the air outlet direction of the air outlet cylinder, and a groove is formed between two adjacent annular protrusions; the bottom of the groove is provided with a drain hole.

[0022] In some embodiments, the windward surface of the annular protrusion is a frustum-shaped hole surface, and the small end of the frustum-shaped hole surface is located on the downstream side of the air outlet direction of the air outlet cylinder relative to the large end.

[0023] And / or, the leeward surface of the annular protrusion is perpendicular to the center line of the air outlet cylinder.

[0024] And / or, the protrusion height H of the annular protrusion is 2-4 mm.

[0025] In some embodiments, when the windward surface of the annular protrusion is a frustum-shaped hole surface, and the small end of the frustum-shaped hole surface is located on the downstream side of the air outlet direction of the air outlet cylinder relative to the large end, the included angle C between the frustum-shaped hole surface and the center line of the air outlet cylinder is 60-75°.

[0026] In some embodiments, the outer cylinder is a straight-line type cylinder, and the inner cylinder is a frustum-shaped cylinder with an outer diameter gradually decreasing along the first direction, so that the distance between the outer wall of the inner cylinder and the inner wall of the outer cylinder gradually increases along the first direction; wherein the taper angle A of the inner cylinder is 3-5°.

[0027] The impeller guide vane, water removal impeller and water separator provided by the utility model have the following beneficial effects:

[0028] 1. When the ambient air is humid and a large amount of water needs to be removed, the blade outlet angle of the impeller guide vane can be adjusted by rotating the second blade part to increase air rotation and improve water removal efficiency; when the ambient air is not so humid and a small amount of water needs to be removed, the blade outlet angle of the impeller guide vane can be increased by rotating the second blade part, so that water can be removed and the resistance loss of the water separator can be reduced. Wherein, by rotating the second blade part, the blade outlet angle of the impeller guide vane can be adjusted, so that the change of the humidity of the ambient air can be coped with, and the water separation can always be in a better working state.

[0029] 2. In the technical solution of this utility model, most of the droplets are in the gap between the outer cylinder and the inner cylinder and are discharged through the first drain hole on the outer cylinder. The front end of the inner cylinder narrows, forcing the humid air in the vicinity of the outer wall of the inner cylinder to turn and enter the inner cylinder through air vents of different diameters and densities, throwing the droplets into the gap and discharging them through the first drain hole on the outer cylinder. The small amount of droplets contained in the humid air that has already entered the inner cylinder is prevented from forming a water film and flowing downstream by the water film blocking band formed by the annular protrusion on the tail air outlet, and is discharged through the drain hole on the air outlet. Attached Figure Description

[0030] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of an impeller guide vane provided in one embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram reflecting the blade exit angle of the impeller guide vanes;

[0033] Figure 3 This is a schematic diagram of the structure of a water removal impeller provided in one embodiment of the present invention;

[0034] Figure 4 This is a partial structural diagram of the water removal impeller;

[0035] Figure 5 This is a schematic diagram of the structure of a water separator provided in one embodiment of the present invention;

[0036] Figure 6 This is a perspective view of a water separator provided in one embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of an outer cylinder provided in one embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the connection between the inner cylinder and the air outlet provided in one embodiment of the present invention;

[0039] Figure 9 yes Figure 8 A sectional view of the middle structure;

[0040] Figure 10 yes Figure 9 Enlarged diagram of point B in the middle.

[0041] Reference signs are:

[0042] 1, water removal impeller; 2, outer cylinder; 3, air outlet cylinder; 4, first blade part; 5, output shaft; 6, second blade part; 7, motor; 8, connecting column; 9, inner cylinder; 10, impeller guide vane; 11, cylinder body; 21, first drainage hole; 31, drainage hole; 32, annular protrusion; 41, one end of the first blade part; 42, the other end of the first blade part; 61, one end of the second blade part; 62, the other end of the second blade part; 90, air passage; 91, gap; 201, first end; 202, second end; 321, windward surface; 322, leeward surface; 323, groove; 901, first group of air passages; 902, first group of air passages; a, first direction; b, second direction; m, center line; 9a, the side of the inner cylinder away from the second end. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0044] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0045] For purposes of the description hereinafter, spatially relative terms, such as "above", "below", "up", "down", "between", "within", "left", "right", "rear", "front", "upper", "lower", "horizontal", "vertical", "above", "below", "up", "down", "top", "bottom", "under" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", "third", etc. can be used herein to describe various elements, components, regions, layers and / or sections but are not intended to be limiting. Such terms are used only to distinguish one element, component, region, layer and / or section from another element, component, region, layer and / or section. Thus, a first element, component, region, layer and / or section discussed below could be termed a second element, component, region, layer and / or section without departing from the teachings of the present application.

[0046] In addition, it should be noted that the use of "first", "second", etc. words to define parts, only for the convenience of the corresponding parts, as there is no declaration, the above words have no special meaning, therefore can not be understood as the limitation of the scope of protection of the present application.

[0047] With reference to Figures 1-2 As shown in the drawings, according to the embodiment of the present application, a kind of impeller guide vane 10, it includes first blade part 4 and second blade part 6. Impeller guide vane 10 by the one end 41 of first blade part admission. The other end 42 of first blade part cooperates with the one end 61 of second blade part, so that the wind of the other end 42 of first blade part can flow to the one end 61 of second blade part, to be discharged from the other end 62 of second blade part by the guidance of second blade part 6. Wherein, second blade part 6 can be rotated relative to first blade part 4, so that the blade outlet angle of impeller guide vane 10 can be adjusted.

[0048] In the above example, when the ambient air is humid, and a large amount of water needs to be removed, the blade outlet angle β2 of the impeller guide vane 10 can be adjusted by rotating the second blade part 6 to increase the air rotation and improve the water removal efficiency; when the ambient air is not so humid, and less water needs to be removed, the blade outlet angle β2 of the impeller guide vane 10 can be increased by rotating the second blade part 6, so that water can be removed and the resistance loss of the water separator can be reduced. By rotating the second blade part 6, the blade outlet angle β2 of the impeller guide vane 10 can be adjusted, so that the change of the humidity of the ambient air can be responded to, and the water separation can always be in a better working state.

[0049] As Figure 2 As shown in the drawings, the blade inlet angle of the aforementioned impeller guide vane 10 is β1.

[0050] In order to achieve the effect that the other end 42 of the first blade portion cooperates with the one end 61 of the second blade portion, at least part of the wind of the other end 42 of the first blade portion can flow to the one end 61 of the second blade portion, in some embodiments, the other end 42 of the first blade portion can be in contact with the one end 61 of the second blade portion, and the two are seamlessly matched, so that the wind of the other end 42 of the first blade portion can smoothly flow to the one end 61 of the second blade portion.

[0051] In some embodiments, the aforementioned second blade portion 6 can be relatively fixed at the position after rotation with the first blade portion 4, so as to improve the stability of the second blade portion 6 in guiding the wind.

[0052] In order to achieve the purpose that the second blade portion 6 is relatively fixed at the position after rotation with the first blade portion 4, in a first example, the impeller guide vane 10 can include a motor 7, which can be a stepper motor or the like. The output shaft 5 of the motor is connected to the one end 61 of the second blade portion, so as to drive the second blade portion 6 to rotate relative to the first blade portion 4. Specifically, the one end 61 of the second blade portion can be provided with an a shaft hole, the output shaft 5 of the motor is installed in the a shaft hole and is fixed in the circumferential direction of the a shaft hole. Wherein, the a shaft hole can have a first a flat position, the output shaft 5 of the motor has a second a flat position, the output shaft 5 of the motor is inserted into the a shaft hole, and the first a flat position cooperates with the second a flat position, so that the output shaft 5 of the motor and the a shaft hole are relatively fixed in the circumferential direction.

[0053] Wherein, the motor 7 can be a motor with self-locking function, and the motor 7 keeps the second blade portion 6 relatively fixed at the position after rotation with the first blade portion 4 through self-locking. In this first example, since the second blade portion 6 is driven to rotate by the motor 7, human labor can be saved.

[0054] In order to achieve the purpose that the second blade portion 6 is relatively fixed at the position after rotation with the first blade portion 4, in a second example, the second blade portion 6 is rotated relative to the first blade portion 4 through a damping rotating shaft, and the second blade portion 6 is relatively fixed at the position after rotation with the first blade portion 4 through the damping of the damping rotating shaft. In this second example, since the damping rotating shaft has damping, the second blade portion 6 can be rotated manually, so that the second blade portion 6 can be relatively fixed at the position after rotation with the first blade portion 4 through the damping of the damping rotating shaft. In some embodiments, the aforementioned second blade portion 6 can be a fan-shaped concave arc panel or a fan-shaped flat panel.

[0055] In some embodiments, as shown in Figures 3-4 The utility model further provides a water removal impeller 1 which can include a cylinder 11 and the impeller guide vane 10 of any one of the above. Wherein, the first blade portion 4 and the second blade portion 6 are both arranged in the cylinder 11, and the first blade portion 4 is fixedly connected with the cylinder 11.

[0056] In some embodiments, the aforementioned water-removing impeller 1 further includes a connecting column 8 located in the middle of the inner side of the cylinder 11; the aforementioned first blade portion 4 is fixedly connected to the inner wall of the cylinder 11 and the connecting column 8 respectively.

[0057] like Figures 3-4 As shown, the number of impeller guide vanes 10 can be two or more, and they are evenly arranged in the circumferential direction of the cylinder 11. In a specific application example, the number of impeller guide vanes 10 can be between 3 and 6.

[0058] In the above example, when air carrying droplets passes through the stationary dewatering impeller 1 under pressure, it rotates, forming a spiral airflow that flows forward. Under the action of centrifugal force, the droplets in the air are thrown onto the inner wall of the cylinder 11, forming a water film. The water film flows towards the water removal device at the rear under the action of the forward airflow. The dewatering requirements of air environments with different moisture contents can be met by adjusting the blade exit angle β2 of the impeller guide vanes 10. When the air moisture content is high and the required dewatering volume is large, the blade exit angle β2 is reduced, resulting in a stronger airflow rotation and a stronger centrifugal force, accelerating the migration of droplets towards the inner wall of the cylinder 11 and improving the water separation efficiency. However, this will increase the flow resistance of the dewatering impeller 1 to some extent. When the air moisture content is low and the required dewatering volume is small, the blade exit angle β2 is increased, resulting in a weaker rotating airflow and a smaller centrifugal force, which meets the smaller dewatering requirements. In this case, the flow resistance loss of the dewatering impeller 1 is also small. By adjusting the blade outlet angle of the impeller guide vane 10, the dewatering impeller 1 can always be in a better working state.

[0059] In some embodiments, when the aforementioned impeller guide vane 10 includes a motor 7, and the output shaft 5 of the motor is connected to one end 61 of the second blade portion to drive the second blade portion 6 to rotate relative to the first blade portion 4, the housing of the motor 7 is fixed on the cylinder 11 to facilitate the motor 7 to drive the second blade portion 6 to rotate through the output shaft 5.

[0060] In some embodiments, when the second blade portion 6 rotates relative to the first blade portion 4 via the damping shaft, the damping shaft is rotatably mounted on the cylinder 11 and is fixed relative to the second blade portion 6, so that the second blade portion 6 can rotate relative to the first blade portion 4 via the damping shaft, and the second blade portion 6 can maintain a relatively fixed position relative to the first blade portion 4 after rotation due to the damping of the damping shaft. The second blade portion 6 may be provided with a b-axis hole, which may have a first b-flat portion, and the damping shaft has a second b-flat portion. The damping shaft is inserted into the b-axis hole, and the first b-flat portion and the second b-flat portion cooperate to keep the damping shaft and the b-axis hole relatively fixed in the circumferential direction.

[0061] In some implementations, such asFigures 5-10 As shown, the utility model also provides a water separator, it includes water removal device and water removal impeller 1 among above. Water removal device has outer tube 2 and inner tube 9, outer tube 2 has opposite first end 201 and second end 202. Water removal device receives the fluid that water removal impeller 1 discharges through the opening of first end 201. Wherein, the direction along second end 202 to first end 201 is first direction a. The distance between the outer wall of inner tube 9 and the inner wall of outer tube 2 gradually increases along first direction a, to form the gap 91 that opening gradually expands outward along first direction a between them. Wherein, gap 91 is closed in the side close to second end 202, and the outer wall of inner tube 9 is equipped with the air hole 90 that communicates gap 91 and the inside of inner tube 9.

[0062] In the above example, the side close to first end 201 of inner tube 9 is the air inlet side, and the side away from first end 201 of inner tube 9 is the air outlet side. The rotating air flow discharged from water removal impeller 1, from the center to the circumferential direction, the water content of air is more and more, the air near the circumference enters the aforementioned gap 91, the inner wall of outer tube 2 can be provided with the first drain hole 21 that communicates outside, and most of the water in the air entering the gap 91 is discharged from the first drain hole 21. Wherein, since the opening of gap 91 gradually expands outward along first direction a, more air can flow into gap 91, and since gap 91 is closed in the side close to second end 202, part of the humid air in gap 91 is forced to enter the inside of inner tube 9 from air hole 90, and the air in gap 91 enters inner tube 9 from air hole 90 in a bent form, which helps to shake off the water droplets in the air from inner tube 9.

[0063] In some embodiments, as Figure 6 As shown, the side 9a away from second end of the aforementioned inner tube has a necked structure, which helps to increase the opening size of the aforementioned gap 91, so that more air can flow into gap 91, and then perform gas-liquid separation when passing through air hole 90, which helps to improve the gas-liquid separation effect.

[0064] In some embodiments, the aforementioned air hole 90 has two or more groups, and the two or more groups of air holes 90 are arranged in sequence along second direction b. Second direction b is opposite to first direction a. Wherein, the outer diameter of each group of air holes 90 can gradually decrease along second direction b. Along second direction b, the first few rows of air holes 90 turn sharply, and if the opening is still small, the resistance will increase, so that most of the air will not pass through the first row of air holes 90, but will flow from the rear air holes 90, which will cause uneven airflow. However, by gradually reducing the outer diameter of each group of air holes 90 along second direction b, the utility model helps to make the airflow uniform, which is more conducive to separating water droplets from air and improving water removal efficiency.

[0065] In some embodiments, the arrangement density of each group of air outlet holes 90 gradually increases along the second direction b, and based on the same principle, the air turns sharply at the front rows of air outlet holes 90 and turns gently at the rear rows of air outlet holes 90, which is beneficial to separate water droplets from the air and improve the water removal efficiency. The arrangement of the air outlet holes 90 makes the air resistance uniform through the air outlet holes 90, further makes the air flow uniform through the air outlet holes 90, and is beneficial to the air after water removal flowing out through the inner cylinder 9.

[0066] In some embodiments, when the outer diameter of each group of air outlet holes 90 gradually decreases along the second direction b, the air outlet holes 90 are two groups, which are the first group of air outlet holes 901 and the second group of air outlet holes 902. The first group of air outlet holes 901 and the second group of air outlet holes 902 are arranged in sequence along the second direction b. Among them, the hole diameter D1 of each air outlet hole 90 in the first group of air outlet holes 901 is 3-5 mm, and the hole diameter D2 of each air outlet hole 90 in the second group of air outlet holes 902 is 2-3 mm.

[0067] In the above example, by making the hole diameter D1 of each air outlet hole 90 in the first group of air outlet holes 901 be 3-5 mm, and the hole diameter D2 of each air outlet hole 90 in the second group of air outlet holes 902 be 2-3 mm, the air flow resistance through the first group of air outlet holes 901 and the second group of air outlet holes 902 can be balanced, and the air flow through the first group of air outlet holes 901 and the second group of air outlet holes 902 can be balanced.

[0068] In some embodiments, as shown in Figure 6 , Figures 8-10 As shown in the above example, the air outlet side of the inner cylinder 9 is connected with an air outlet cylinder 3, and the inner wall of the air outlet cylinder 3 is provided with annular protrusions 32. The number of annular protrusions 32 can be two or more, and they are arranged in sequence and spaced along the air outlet direction of the air outlet cylinder 3, and a groove 323 is formed between adjacent two annular protrusions 32. The bottom of the groove 323 is provided with a drainage hole 31. Among them, the air outlet cylinder 3 can be integrally formed on the air outlet side of the inner cylinder 9.

[0069] In the above example, the annular protrusion 32 forms a water film blocking belt, which can prevent the formation of a water film in the inner cylinder 9, so that the air in the inner cylinder 9 further removes moisture through the drainage hole 31 before leaving the inner cylinder 9.

[0070] In some embodiments, as shown in Figure 10 The windward side 321 of the annular protrusion can be a frustum-shaped hole surface, and the small end of the frustum-shaped hole surface is located on the downstream side of the air outlet direction of the air outlet cylinder 3 relative to the large end.

[0071] In the above example, by designing the windward side 321 of the annular protrusion as a frustum-shaped hole surface, it is beneficial to reduce the resistance without affecting the flow of the water film.

[0072] In some embodiments, as shown inFigure 10 As shown, the leeward surface 322 of the aforementioned annular protrusion is perpendicular to the center line m of the air outlet cylinder 3, so as to block the water film from flowing downstream.

[0073] In some embodiments, as shown in Figure 9 As shown, the protrusion height H of the aforementioned annular protrusion 32 can be 2-4 mm, so as to prevent the water film from flowing, which is equivalent to reducing the water removal.

[0074] In some embodiments, as shown in Figure 10 As shown, when the windward surface 321 of the annular protrusion 32 is a frustum-shaped hole surface, and the small end of the frustum-shaped hole surface is located on the downstream side of the air outlet direction of the air outlet cylinder 3 relative to the large end, the included angle C between the frustum-shaped hole surface and the center line m of the air outlet cylinder 3 is 60-75°, so as to reduce the air flow resistance.

[0075] In some embodiments, as shown in Figure 6 As shown, the aforementioned outer cylinder 2 is a straight cylinder, and the inner cylinder 9 is a frustum-shaped cylinder with an outer diameter gradually decreasing along the first direction a, so as to gradually increase the distance between the outer wall of the inner cylinder 9 and the inner wall of the outer cylinder 2 along the first direction a. The taper angle A of the inner cylinder 9 is 3-5°, which is better for water removal.

[0076] In the technical scheme of the present application, most of the liquid droplets are in the gap 91 between the outer cylinder 2 and the inner cylinder 9, and are discharged through the first drain hole 21 on the outer cylinder 2. The inner cylinder 9 is tapered at the front end, forcing the wet air near the outer wall of the inner cylinder 9 to turn and enter the inner cylinder 9 through the air holes 90 of different diameters and densities, thereby throwing the liquid droplets into the gap 91 and discharging them through the first drain hole 21 on the outer cylinder 2. A small amount of liquid droplets contained in the wet air that has entered the inner cylinder 9 are prevented from forming a water film and flowing downstream by the water film blocking belt formed by the annular protrusion 32 on the tail air outlet cylinder 3, and are discharged through the drain hole 31 on the air outlet cylinder 3.

[0077] Those skilled in the art will readily understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0078] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above description is only a preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present application, and these improvements and modifications shall be considered as the protection scope of the present application.

Claims

1. An impeller vane (10) characterized by: The impeller guide vane (10) comprises a first blade part (4) and a second blade part (6), one end (41) of the first blade part is arranged to guide air into the impeller guide vane (10), the other end (42) of the first blade part cooperates with one end (61) of the second blade part, so that at least part of the air at the other end (42) of the first blade part can flow to the one end (61) of the second blade part, and the air is guided by the second blade part (6) to flow out from the other end (62) of the second blade part. The second blade part (6) is rotatable relative to the first blade part (4), so that the blade outlet angle of the impeller guide vane (10) is adjustable.

2. The impeller guide vane (10) according to claim 1, wherein: The other end (42) of the first blade part is in contact with the one end (61) of the second blade part, and the two ends are seamlessly connected.

3. The impeller guide vane (10) according to claim 1 or 2, wherein: The second blade part (6) is relatively fixed with the first blade part (4) at the position after rotation.

4. The impeller vane (10) according to claim 3, characterized in that: The motor (7) is connected to the one end (61) of the second blade part to drive the second blade part (6) to rotate relative to the first blade part (4). The motor (7) is a motor with self-locking function, and the motor (7) keeps the second blade part (6) relatively fixed with the first blade part (4) at the position after rotation through self-locking.

5. The impeller guide vane (10) according to claim 3, wherein: The second blade part (6) is rotatable relative to the first blade part (4) through a damping rotating shaft, and the second blade part (6) is relatively fixed with the first blade part (4) at the position after rotation through damping of the damping rotating shaft.

6. A dewatering impeller (1) characterized by: The impeller guide vane (10) according to any one of claims 1-5, wherein: the first blade part (4) and the second blade part (6) are arranged in the cylinder (11), and the first blade part (4) is fixedly connected with the cylinder (11).

7. The water removal impeller (1) according to claim 6, wherein: When the impeller guide vane (10) comprises a motor (7), and the output shaft (5) of the motor is connected to the one end (61) of the second blade part to drive the second blade part (6) to rotate relative to the first blade part (4), the shell of the motor (7) is fixed on the cylinder (11).

8. The water removal impeller (1) according to claim 6, wherein: When the second blade part (6) is rotatable relative to the first blade part (4) through a damping rotating shaft, the damping rotating shaft is rotatably arranged on the cylinder (11), and the damping rotating shaft is relatively fixed with the second blade part (6).

9. A water separator characterized by: The water separation device comprises an outer cylinder (2) and an inner cylinder (9), the outer cylinder (2) has opposite first and second ends (201) and (202), the water separation device receives fluid discharged by the water removal impeller (1) through an opening of the first end (201); wherein the first direction (a) is a direction from the second end (202) to the first end (201), the distance between the outer wall of the inner cylinder (9) and the inner wall of the outer cylinder (2) gradually increases along the first direction (a) to form a gap (91) between them, the gap (91) gradually expands outward along the first direction (a). The gap (91) is closed on one side close to the second end (202), and the outer wall of the inner cylinder (9) is provided with a wind hole (90) communicating with the gap (91) and the inside of the inner cylinder (9).

10. The water separator according to claim 9, wherein: the side (9a) of the inner cylinder away from the second end has a necked structure.

11. The water separator of claim 9, wherein: The wind hole (90) has two or more groups, and the wind holes (90) in each group are arranged in sequence along the second direction (b); the second direction (b) is opposite to the first direction (a); wherein, the outer diameter of the wind holes (90) in each group gradually decreases along the second direction (b); and / or, the arrangement density of the wind holes (90) in each group gradually increases along the second direction (b).

12. The water separator according to claim 11, wherein: when the outer diameter of the wind holes (90) in each group gradually decreases along the second direction (b), the wind holes (90) are two groups, namely a first group of wind holes (901) and a second group of wind holes (902), and the first group of wind holes (901) and the second group of wind holes (902) are arranged in sequence along the second direction (b); wherein the hole diameter D1 of each wind hole (90) in the first group of wind holes (901) is 3-5 mm, and the hole diameter D2 of each wind hole (90) in the second group of wind holes (902) is 2-3 mm.

13. The water separator of any one of claims 9-12, wherein: The air outlet side of the inner cylinder (9) is connected with an air outlet cylinder (3), the inner wall of the air outlet cylinder (3) is provided with annular protrusions (32), the number of the annular protrusions (32) is two or more, and the annular protrusions (32) are arranged in sequence and spaced apart along the air outlet direction of the air outlet cylinder (3), and a groove (323) is formed between adjacent two annular protrusions (32); the bottom of the groove (323) is provided with a drain hole (31).

14. The water separator according to claim 13, wherein: the windward surface (321) of the annular protrusion is a frustum-shaped hole surface, and the small end of the frustum-shaped hole surface is located on the downstream side of the air outlet direction of the air outlet cylinder (3) relative to the large end; and / or, the leeward surface (322) of the annular protrusion is perpendicular to the center line (m) of the air outlet cylinder; and / or, the protrusion height H of the annular protrusion (32) is 2-4 mm.

15. The water separator according to claim 14, wherein: When the windward face (321) of the annular protrusion is a frustoconical hole face, and the small end of the frustoconical hole face is located on the downstream side of the air outlet direction of the air outlet cylinder (3) relative to the large end, the included angle C between the frustoconical hole face and the center line (m) of the air outlet cylinder (3) is 60-75°.

16. The water separator of any one of claims 9-12, 14-15, wherein: The outer cylinder (2) is a straight cylinder, and the inner cylinder (9) is a frustoconical cylinder with an outer diameter gradually decreasing along the first direction (a), so that the distance between the outer wall of the inner cylinder (9) and the inner wall of the outer cylinder (2) gradually increases along the first direction (a); wherein the taper angle A of the inner cylinder (9) is 3-5°.

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