CN215333605U

CN215333605U - Efficient fog gun and sanitation vehicle using same

Info

Publication number: CN215333605U
Application number: CN202120658529.8U
Authority: CN
Inventors: 姜卫生; 杨仲磊; 张沛; 郭海乐; 胡亚荣; 孙志强; 宋永科; 欧阳洋
Original assignee: Zhengzhou Yutong Heavy Industry Co Ltd
Current assignee: Zhengzhou Yutong Heavy Industry Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-28
Anticipated expiration: 2031-03-31

Abstract

The utility model provides a high-efficiency fog gun and a sanitation vehicle using the same. The impeller comprises a hub and blades distributed radially around the center of the hub; the blade is characterized in that the end of the blade, which is connected with the hub, is a blade root, the end of the blade, which is far away from the hub, is a blade tip, and the part between the blade root and the blade tip is a blade; establishing a coordinate system by taking two diameter directions of the impeller as X, Y axes, taking the axial direction of the impeller as a Z axis and taking the center of the impeller as the center of the coordinate system; the blade root, the blade leaf and the blade tip contour lines are all closed smooth three-dimensional curves which are respectively a blade root three-dimensional curve, a blade leaf three-dimensional curve and a blade tip three-dimensional curve, and the three closed smooth three-dimensional curves are connected by a smooth curve to form the three-dimensional twisted blade. Through practical tests, the oil consumption of the whole multifunctional dust suppression vehicle can be reduced by 30% by adopting the fog gun with the impeller.

Description

Efficient fog gun and sanitation vehicle using same

Technical Field

The utility model belongs to the technical field of dust suppression vehicle fog guns, and particularly relates to a high-efficiency fog gun and a sanitation vehicle using the same.

Background

In recent years, with the rapid development of cities, the urban infrastructure is in a peak period, and dust pollution caused by urban buildings is serious. Because the building construction technology is low, the shielding protection wall is not needed to be arranged before construction, a lot of dust is produced in the construction process, proper treatment measures are not provided or timely landfill, hardening and the like are not needed, and linear pollution is caused by blowing of light wind and rising of sand dust, so that the building construction technology is one of particle sources.

As an important device of the multifunctional dust suppression vehicle, the dust suppression effect of the fog gun is quite remarkable, and water in the water tank is atomized and then sprayed out by the high-pressure fan, so that the purpose of suppressing dust is achieved.

The development and the manufacture of the fog gun have high professional and technical challenges, and the subjects relate to hydrodynamics, material mechanics, rotor dynamics, mechanical vibration, noise and the like, so the design and the manufacture are very difficult. Particularly, the impeller as one of the fog gun core components is designed by flow channel design, theoretical calculation, empirical evaluation and the like, and the design process is extremely complex in such a way that the loss of fluid flow is as small as possible, the aerodynamic efficiency of a machine is as high as possible, and the aerodynamic noise is as small as possible, so that the following defects generally exist in the existing fog gun impeller:

(1) the flow loss in the impeller is large, the friction loss of the wall surface of a flow channel, the separation loss of a boundary layer and the flow vortex loss are caused, the shearing and mixing loss caused by uneven flow is caused, the pneumatic efficiency of the fog gun is not high, and the energy consumption is large;

(2) the impact loss and the wake shedding loss of the front edge of the blade are large, so that the fog gun has high noise.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-efficiency fog gun and a sanitation vehicle using the same.

The object of the utility model is achieved in the following way: a high-efficiency fog gun comprises an impeller, wherein the impeller comprises a hub and blades which are distributed radially around the center of the hub; the blade is characterized in that the end of the blade, which is connected with the hub, is a blade root, the end of the blade, which is far away from the hub, is a blade tip, and the part between the blade root and the blade tip is a blade; establishing a coordinate system by taking two diameter directions of the impeller as X, Y axes, taking the axial direction of the impeller as a Z axis and taking the center of the impeller as the center of the coordinate system; the blade root, the blade leaf and the blade tip contour lines are all closed smooth three-dimensional curves which are respectively a blade root three-dimensional curve, a blade leaf three-dimensional curve and a blade tip three-dimensional curve, and the three closed smooth three-dimensional curves are connected by a smooth curve to form the three-dimensional twisted blade.

The included angle between the connecting line between the central point of the front end of the blade root and the central point of the rear end of the blade root and the Z axis is between 30 and 60 degrees; the included angle between the Z axis and the connection between the central point of the front end of the blade tip and the central point of the rear end of the blade tip is 57 degrees and 77 degrees; the blade root, the blade and the blade tip of the same blade are inclined towards the same side of the Z axis, and the inclined angle is gradually increased.

The thickness of the leading edge and the trailing edge of the blade is less than the thickness of the middle part of the blade.

The number of the blades is between 8 and 16; the blades are uniformly distributed in the center of the impeller.

The sanitation truck comprises the high-efficiency fog gun, and the high-efficiency fog gun comprises the impeller.

The utility model has the beneficial effects that: the utility model ensures the uniformity of the gradual loading process of the gas flow in the flow channel, avoids the generation of large vortices by the flow, and effectively controls the separation loss of the boundary layer, thereby realizing the high-efficiency flow of the gas. Through practical tests, the oil consumption of the whole multifunctional dust suppression vehicle can be reduced by 30% by adopting the fog gun with the impeller. The front edge and the tail edge of the blade are thinned, so that the impact loss of the front edge of the blade and the tail falling loss of the tail edge can be reduced, the blade has excellent acoustic characteristics, and the fog gun noise is low.

Drawings

Fig. 1 is a schematic view of an impeller and a coordinate system.

FIG. 2 is a schematic diagram of three-dimensional curves of a blade tip, a blade leaf and a blade root. FIG. 3 is a schematic view of a blade.

Wherein 1 is the hub, 2 is the blade, 3 is the web, 4 is the bushing, 21 is the three-dimensional curve of the blade tip, 22 is the three-dimensional curve of the blade, 23 is the three-dimensional curve of the blade root, 24 is the leading edge, 25 is the trailing edge.

Detailed Description

In the present invention, unless otherwise specifically defined and limited, technical terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention pertains. The terms "connected", "fixed", "arranged" and the like are to be understood in a broad sense, and may be fixedly connected, detachably connected or integrated; can be directly connected or indirectly connected through an intermediate medium; either mechanically or electrically. Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features, or indirectly contacting the first and second features through intervening media. Furthermore, a first feature may be "on" or "over" or "above" a second feature, and the like, may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under" or "beneath" a second feature may be directly under or obliquely under the first feature or may simply mean that the first feature is at a lesser level than the second feature. Relational terms such as first, second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Terms used in the description such as "center", "lateral", "longitudinal", "length", "width", "thickness", "height", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated.

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. As shown in fig. 1-3, the high-efficiency fog gun comprises an impeller, wherein the impeller comprises a hub 1 and blades 2 which are radially distributed around the center of the hub 1. The end of the blade 2 connected with the hub 1 is a blade root, the end of the blade 2 far away from the hub 1 is a blade tip, and the part between the blade root and the blade tip is a blade; establishing a coordinate system by taking two diameter directions of the impeller as X, Y axes, taking the axial direction of the impeller as a Z axis and taking the center of the impeller as the center of the coordinate system; the contour lines of the blade root, the blade leaf and the blade tip are all closed smooth three-dimensional curves which are a blade root three-dimensional curve 23, a blade leaf three-dimensional curve 22 and a blade tip three-dimensional curve 21 respectively. The three closed smooth three-dimensional curves are connected by smooth curves to form a three-dimensional twisted blade 2; the included angle between the connecting line between the central point of the front end of the blade root and the central point of the rear end of the blade root and the Z axis is between 30 and 60 degrees; the included angle between the Z axis and the connection between the central point of the front end of the blade tip and the central point of the rear end of the blade tip is 57 degrees and 77 degrees; the blade root, the blade leaf and the blade tip of the same blade 2 are inclined towards the same side of the Z axis, and the inclination angle is gradually increased. Other structures of the high-efficiency fog gun are in the prior art, and are not described in the attached drawings and the specification. The remaining structure of the impeller can be referred to the shape and structure in a blade of patent CN 106523431A. For example, the three-dimensional root curve includes a suction surface root profile and a pressure surface root profile which are elliptic curves, and may be other conventional curve shapes.

The blades 2 and the hub 1 can be connected in a welding, riveting or bolt connection mode, the hub 1 and the web 3 are connected in a welding mode, and the web 3 and the shaft sleeve 4 are connected in a welding mode. These are also prior art and will not be described in detail.

One spatial shape of the blade is illustrated below by relative coordinates, which are the ratio of the coordinate point to the impeller outer diameter.

After the coordinate points of the blade tip, the blade and the blade root are respectively and smoothly connected, a closed and smooth blade tip three-dimensional curve 21, a closed and smooth blade three-dimensional curve 22 and a closed and smooth blade root three-dimensional curve 23 are formed, and the three closed curves are connected by smooth curves to form the space twisted blade 2.

The thickness of the leading edge and the trailing edge of the blade is less than the thickness of the middle part of the blade. The front edge and the tail edge of the blade are thinned, so that the impact loss of the front edge of the blade and the tail falling loss of the tail edge can be reduced, the blade has excellent acoustic characteristics, and the fog gun noise is low. The number of the blades is between 8 and 16; the blades are uniformly distributed in the center of the impeller.

The utility model adopts a full three-dimensional pneumatic design analysis technical route, and obtains the ternary blade through flow channel optimization and complete machine pneumatic performance coherence optimization. Through practical inspection, the uniformity of the gradual loading process of the gas flow in the flow channel is ensured, large vortices generated by the flow are avoided, the separation loss of a boundary layer is effectively controlled, and therefore the efficient flow of the gas is realized. Through practical tests, the oil consumption of the whole multifunctional dust suppression vehicle can be reduced by 30% by adopting the fog gun with the impeller.

The dust suppression vehicle with the structure comprises the efficient fog gun. The high-efficiency fog gun comprises the impeller.

The features of the embodiments described above may be arbitrarily combined, and the combination of the features is not contradictory, and should be considered as a range described in the present specification. The technical solution according to the present invention and equivalents or changes thereof, as well as several changes and modifications made therein, should also be considered as the protection scope of the present invention without departing from the overall concept of the present invention.

Claims

1. A high-efficiency fog gun comprises an impeller, wherein the impeller comprises a hub and blades which are distributed radially around the center of the hub; the method is characterized in that: the blade is characterized in that the end of the blade, which is connected with the hub, is a blade root, the end of the blade, which is far away from the hub, is a blade tip, and the part between the blade root and the blade tip is a blade; establishing a coordinate system by taking two diameter directions of the impeller as X, Y axes, taking the axial direction of the impeller as a Z axis and taking the center of the impeller as the center of the coordinate system; the blade root, the blade leaf and the blade tip contour lines are all closed smooth three-dimensional curves which are respectively a blade root three-dimensional curve, a blade leaf three-dimensional curve and a blade tip three-dimensional curve, and the three closed smooth three-dimensional curves are connected by a smooth curve to form the three-dimensional twisted blade.

2. The efficient fog gun according to claim 1, characterized in that: the included angle between the connecting line between the central point of the front end of the blade root and the central point of the rear end of the blade root and the Z axis is between 30 and 60 degrees; the included angle between the Z axis and the connection between the central point of the front end of the blade tip and the central point of the rear end of the blade tip is 57 degrees and 77 degrees; the blade root, the blade and the blade tip of the same blade are inclined towards the same side of the Z axis, and the inclined angle is gradually increased.

3. The efficient fog gun according to claim 1, characterized in that: the thickness of the leading edge and the trailing edge of the blade is less than the thickness of the middle part of the blade.

4. The efficient fog gun according to claim 1, characterized in that: the number of the blades is between 8 and 16; the blades are uniformly distributed in the center of the impeller.

5. The sanitation vehicle using the high-efficiency fog gun of any one of claims 1 to 4, is characterized in that: the sanitation truck comprises the high-efficiency fog gun, and the high-efficiency fog gun comprises the impeller.