CN218702603U - Airflow reversing device and dumper - Google Patents

Abstract

The utility model provides an airflow reversing device and a dumper, wherein the airflow reversing device comprises a shell, a first output port and a second output port which are used for outputting gas, and an input port for inputting gas; a regulating valve for regulating gas to the first output port or the second output port; the first output pipeline is communicated with the first output port, one end, far away from the shell, of the first output pipeline is provided with a first connecting piece which is arranged along the axial direction of the first output pipeline, and the outer side surface of the first connecting piece is an arc-shaped surface; first exhaust pipe, the intercommunication first output pipeline, first exhaust pipe is close to first output pipeline's one end have with the second connecting piece of first connecting piece butt, the second connecting piece is followed first exhaust pipe circumference sets up, the second connecting piece is followed for the internal diameter and deviates from the toper of first exhaust pipe's direction crescent. Aims to solve the problem that the joint of the exhaust device and the container pipeline is easy to accumulate dust or age.

Description

Airflow reversing device and dumper

Technical Field

The utility model relates to an engineering machine tool makes technical field, especially relates to an air current switching-over device and tipper.

Background

In some places, the air temperature is low for a long time or in winter, and the influence of the air temperature has great influence on mine construction. For example, most mines in China are in northern areas with low temperature, ore sand is easy to freeze in winter, so that the unloading is not clean or cannot be carried out, and extra workload needs to be increased. In order to solve the problem at low cost, most mining dump trucks adopt the tail gas of an engine to heat a cargo compartment. The heating and exhausting devices of the cargo compartments of various manufacturers are different, as shown in figure 1 (the arrows in the figure point to the direction of air flow),

among the prior art, the joint B for connecting packing box blast pipe A and packing box pipeline is big opening towards the toper structure of packing box pipeline, and its opening orientation is upwards promptly, has great space between joint B and the packing box pipeline, and the many dusts in mining area, and joint B deposition and ponding easily cause equipment ageing, block up and become invalid easily.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an air current switching-over device aims at solving exhaust apparatus and the easy deposition of packing box pipeline junction or ageing problem.

The utility model provides an air current switching-over device, include:

a housing having a first output port and a second output port for gas output, and an input port for gas input;

a regulating valve for regulating gas to the first output port or the second output port.

The first output pipeline is communicated with the first output port, one end, far away from the shell, of the first output pipeline is provided with a first connecting piece which is arranged along the axial direction of the first output pipeline, and the outer side surface of the first connecting piece is an arc-shaped surface;

the first exhaust pipe is communicated with the first output pipeline, one end, close to the first output pipeline, of the first exhaust pipe is provided with a second connecting piece abutted against the first connecting piece, the second connecting piece is arranged along the circumferential direction of the first exhaust pipe, and the inner diameter of the second connecting piece is gradually increased along the direction departing from the first exhaust pipe;

in an embodiment, still include and block the piece, block the piece have with the casing rotates the stiff end of being connected and with the loose end that the stiff end is relative, the governing valve drives the loose end and rotates to shelter from first delivery outlet or the second delivery outlet.

In one embodiment, the regulating valve includes a control member rotatably coupled to the housing and a guide rail for providing a rotational path for the control member, an end of the control member near the input port is slidably coupled to the guide rail, and the control member is fixedly coupled to the blocking member.

In one embodiment, further comprising an input conduit in communication with the input port, a first output conduit in communication with the first output port, and a second output conduit in communication with the second output port;

the cross section of one end of the first output pipeline close to the blocking piece and the axial direction of the first output pipeline form a first included angle of 30-90 degrees, the cross section of one end of the second output pipeline close to the blocking piece and the axial direction of the second output pipeline form a second included angle of 30-90 degrees, and openings of the first included angle and the second included angle face the input port.

In an embodiment, the second output pipeline includes a first fixed portion fixedly connected to the housing and a first movable portion located at an end of the first fixed portion away from the housing, and the first movable portion is detachably connected to the first fixed portion.

In an embodiment, the input pipeline includes a second fixed portion fixedly connected to the housing and a second movable portion located at an end of the second fixed portion away from the housing, and the second movable portion is detachably connected to the second fixed portion.

In one embodiment, the maximum inner diameter of the second connecting element is larger than the maximum outer diameter of the first connecting element.

In one embodiment, the first exhaust pipe is provided with a flow guide section and an output section which are perpendicular to each other, the flow guide section and the output section are in chamfer transition, and one end, far away from the output section, of the flow guide section is fixed with the second connecting piece.

In an embodiment, one end of the output section, which is far away from the flow guide section, is provided with a sealing element arranged along the circumferential direction of the output section and a supporting element used for reinforcing and fixing the sealing element and the first exhaust pipe, and two ends of the supporting element are respectively connected with the sealing element and the first exhaust pipe.

The utility model also provides a dumper, including engine, packing box and as above the air current switching-over device, the engine is connected the input port, the packing box is connected first delivery outlet.

The utility model provides an air current switching-over device sets up spherical first connecting piece through the end at first output pipeline, sets up conical second connecting piece at the end of first blast pipe, and the big opening orientation of this toper second connecting piece is down for rainwater or dust flow down along the outer wall of second connecting piece under the action of gravity, prevent that rainwater or dust from piling up in the junction of first output pipeline and first blast pipe. First connecting piece butt in the second connecting piece for first connecting piece is by the half parcel of second connecting piece, has avoided first output pipeline and first exhaust pipe junction to expose in the air, further protects the junction of first output pipeline and first exhaust pipe. In addition, the inner walls of the first connecting piece and the second connecting piece are tightly abutted, the outer wall of the second connecting piece is arc-shaped, so that the outer diameter of the second connecting piece is gradually increased along the direction close to the first output pipeline, the inner diameter of the second connecting piece is gradually enlarged along the direction close to the first pipeline, the first connecting piece and the second connecting piece are higher in adaptability, the area of the outer diameter of the first connecting piece tightly abutted to the inner wall of the second connecting piece is larger, and the air tightness of the gas pipeline is greatly improved. In addition, the regulating valve can guide whether the gas flows to the first output port or not so as to lead to the first output pipeline and the first exhaust pipe, and can also control the gas amount flowing out of the first output port, so that insufficient hot gas or overheating of the container is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a conventional cargo box heating and exhausting apparatus.

Fig. 2 is a schematic structural diagram of an airflow reversing device and a blocking member according to a first embodiment of the present invention.

Fig. 3 is a perspective view of the housing of fig. 1.

Fig. 4 is a schematic view of the structure of the air flow reversing device and the reversing valve in fig. 1.

Fig. 5 is a schematic structural diagram of an exhaust apparatus according to a second embodiment of the present invention.

Fig. 6 is a schematic structural view of the first exhaust pipe in fig. 5.

Fig. 7 is a schematic structural view of the sealing member in fig. 5.

The reference numbers illustrate: 10. a housing; 11. a first output port; 12. a second output port; 13. an input port; 20. a blocking member; 30. adjusting a valve; 31. a control member; 32. a guide rail; 40. an input pipe; 50. a first output conduit; 60. a second output conduit; 61. a first fixed part; 62. a first movable portion; 70. a first connecting member; 100. a first exhaust pipe; 110. a flow guide section; 120. an output section; 200. a second connecting member; 300. a seal member; 400. a support member; 500. a second exhaust pipe; 600. an air inlet pipe.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. All other embodiments obtained by a person skilled in the art without any inventive work based on the description of the present invention belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", and the like, refer to an orientation or positional relationship based on that shown in the drawings, or that is conventionally placed during use of the invention, for convenience of description and simplicity of illustration, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.

The terms "first," "second," "third," and the like are used solely to distinguish between similar elements and not to indicate or imply relative importance or a particular order.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

First embodiment

Referring to fig. 2 to 7, one embodiment of the present invention provides an airflow reversing device, which includes a housing 10 having a first output port 11 and a second output port 12 for outputting gas, and an input port 13 for inputting gas;

the blocking member 20 has a fixed end rotatably connected to the housing 10 and a movable end opposite to the fixed end, and the adjusting valve 30 drives the movable end to rotate to block the first output port 11 or the second output port 12;

a regulating valve 30 for regulating the passage of gas to the first output port 11 or the second output port 12;

the first output pipeline 50 is communicated with the first output port 11, one end, far away from the shell 10, of the first output pipeline 50 is provided with a first connecting piece 70 arranged along the axial direction of the first output pipeline 50, and the outer side surface of the first connecting piece 70 is an arc-shaped surface;

first exhaust pipe 100, the first output pipeline 50 of intercommunication, first exhaust pipe 100 is close to the one end of first output pipeline 50 and has the second connecting piece 200 with first connecting piece 70 butt, and second connecting piece 200 sets up along first exhaust pipe 100 circumference, and second connecting piece 200 is the toper that the internal diameter increases gradually along the direction of keeping away from first exhaust pipe 100.

Specifically, the first connecting piece 70 is embedded into the second connecting piece 200, the second connecting piece 200 wraps the first connecting piece 70 partially or completely, the joint between the first output pipeline 50 and the first exhaust pipe 100 is prevented from being exposed in the air, the outer wall of the first connecting piece 70 is matched with the inner wall of the second connecting piece 200, the inner walls of the first connecting piece 70 and the second connecting piece 200 are abutted tightly, because the outer wall of the second connecting piece 200 is arc-shaped, the outer diameter of the second connecting piece 200 is gradually increased along the direction close to the first output pipeline 50, the inner diameter of the second connecting piece 200 is gradually increased along the direction close to the first output pipeline 50, the adaptability of the first connecting piece and the second connecting piece is higher, the area of the inner wall of the second connecting piece 200 abutted by the outer diameter of the first connecting piece 70 is larger, a stable blocking structure with good tightness is formed, and the air tightness of the air transmission pipeline is greatly improved. And because the fit size of the two is gradual, the control of the welding precision is more facilitated.

In this embodiment, the first output port 11 and the second output port 12 are disposed on two opposite sides of the housing 10, and a surface of the housing 10 having the input port 13 is perpendicular to a surface of the first output port 11;

the first output port 11 and the second output port 12 are respectively located on two sides of the blocking member 20 in the thickness direction, and one end of the blocking member 20 far away from the input port 13 is movably connected with the housing 10. The regulating valve 30 brings the blocking member 20 close to one end of the input port 13, so that the blocking member 20 blocks the first output port 11 or the second output port 12.

Specifically, the housing 10 is preferably a square or rectangular parallelepiped, which facilitates installation and fixation in a complicated working environment. The first output port 11 and the second output port 12 are respectively arranged on two parallel and opposite sides of the shell 10, the input port 13 is arranged on one side perpendicular to the two sides, and the input port 13 corresponds to the middle of the first output port 11 and the second output port 12, so that the distance from the input port 13 to the first output port 11 is equal to the distance from the input port 13 to the second output port 12, and the conveying distance and the gas amount distributed to the first output port 11 and the distributed second output port 12 are uniformly controlled and are equal to each other by the gas entering the shell 10 from the input port 13. The blocking member 20 is preferably plate-shaped, the plane size of the blocking member can cover the first output port 11 or the second output port 12, the blocking member 20 is inserted between the first output port 11 and the second output port 12, one side of the blocking member 20 corresponding to the thickness is opposite to the input port 13, the first output port 11 and the second output port 12 are located on two sides of the blocking member in the thickness direction, a fixed end of the blocking member 20, which is far away from the input port 13, is rotatably connected with the housing 10, one end of the blocking member, which is close to the input port 13, is a movable end, the adjusting valve 30 drives the movable end of the blocking member 20 to rotate around the fixed end, and with the rotation of the blocking member 20, the aperture of the first output port 11 or the second output port 12, through which the gas can enter, can be adjusted. When the blocking member 20 abuts against and blocks the first output port 11, the gas transmission channel between the first output port 11 and the input port 13 is closed, the aperture of the second output port 12 into which gas can flow is the largest, and at this time, the gas introduced into the housing 10 from the input port 13 flows to the second output port 12; when the blocking member 20 abuts against and blocks the second output port 12, the gas transmission channel between the second output port 12 and the input port 13 is closed, the aperture of the first output port 11 into which the gas can flow is the largest, and at this time, the gas introduced into the housing 10 from the input port 13 flows to the second output port 12. The arrangement is beneficial to the gas flowing into the housing 10 from the input port 13 to be controllably distributed to the preset output port, the inflow amount and the flow rate can be controlled, the flexibility of gas distribution is improved, only one end of the blocking piece 20 needs to be rotated in the distribution process, the operation is simple and convenient, and the production efficiency is improved.

In the present embodiment, the regulating valve 30 includes a control member 31 rotatably connected to the housing 10 and a guide rail 32 for providing a rotation path for the control member 31, an end of the control member 31 near the input port 13 is slidably connected to the guide rail 32, and the control member 31 is fixedly connected to the blocking member 20.

Specifically, the control member 31 may extend in a radial direction of the rotation direction of the blocking member 20, one end of the control member 31 rotatably connected to the housing 10 faces the fixed end of the blocking member 20, and one end of the control member 31 is connected to the guide rail 32 and faces the movable end of the blocking member 20, so that the track of the guide rail 32 is consistent with the rotation track of the movable end of the blocking member 20, and one end of the control member 31 is limited in the guide rail 32, thereby ensuring that the rotation track of the control member 31 is relatively stable and can stop rotating at any time, improving the controllability of the regulating valve 30 on the blocking member 20, and avoiding the effect of the blocking member 20 that the direction of the regulating air flow is lost due to the downward rotation of the blocking member 20 under the action of gravity. Moreover, governing valve 30 in this embodiment can not lose the controllability to blockking 20 because of receiving influence such as pressure, air current, and control 31 is higher with guide rail 32's cooperation stability, and the contrast uses the spring to blockking 20's control among the prior art, the utility model provides a governing valve 30 has longer life, avoids the economic loss that equipment is ageing to be caused.

With continued reference to fig. 2, in this embodiment, the airflow reversing device further includes an input duct 40 communicated with the input port 13, a first output duct 50 communicated with the first output port 11, and a second output duct 60 communicated with the second output port 12, a cross section of an end of the first output duct 50 close to the blocking member 20 forms a first included angle α of 30 ° to 90 ° with an axial direction of the first output duct 50, a cross section of an end of the second output duct 60 close to the blocking member 20 forms a second included angle β of 30 ° to 90 ° with an axial direction of the second output duct 60, and openings of the first included angle α and the second included angle β face the input port 13.

Specifically, the edge of the end of the input duct 40 connected to the input port 13 may be flush with the input port 13, so that gas entering the housing 10 from the input duct 40 is flushed into the housing 10 uniformly. One end of the first output duct 50 is inserted into the housing 10 from the first output port 11, one end of the second output duct 60 is inserted into the housing 10 from the second output port 12, and a cross section of the first output duct 50 inserted into the housing 10 and a cross section of the second output duct 60 inserted into the housing 10 form a third angle smaller than an angle 120 ° whose opening is opposite to the input port 13. Further, the third included angle is formed by combining the first included angle α with the second included angle β, and the size of the opening of the third included angle can be adjusted by adjusting the first included angle α or the second included angle β to limit the rotatable angle of the movable end of the blocking member 20. The greater the angle of the first angle α, the more gas the first output duct 50 receives from the input duct 40, the greater the angle of the second angle β, the more gas the second output duct 60 receives and the input duct 40. The controllable distribution of the gas amount from the input pipe 40 to the first output pipe 50 or the second output pipe 60 can be easily realized by the first included angle α, the second included angle β and the rotation angle of the movable end of the blocking member 20. A person skilled in the art may set the first included angle α or the second included angle β to 31 °, 33 °, 37 °, 42 °, 46 °, 49 °, 51 °, 55 °, 58 °, 60 °, 62 °, 66 °, 69 °, 72 °, 75 °, 79 °, 83 °, 84 °, 87 °, and the like according to actual needs, which is not limited herein.

In the present embodiment, the second output duct 60 includes a first fixed portion 61 fixedly connected to the housing 10 and a first movable portion 62 located at an end of the first fixed portion 61 away from the housing 10, and the first movable portion 62 is detachably connected to the first fixed portion 61.

Specifically, because there is gas flowing in the exhaust device and the exhaust device is connected to the engine, it is difficult to avoid noise generation, in order to reduce too many openings on the housing 10 as much as possible and avoid affecting the flow direction control of the gas flow, in the present embodiment, the second output duct 60 is modularly disposed, so that the first movable portion 62 can be detached and replaced from the first fixed portion 61, and thus, the first fixed portion 61 can be connected to the first movable portion 62 with different models, sizes or uses by replacement, so as to realize multifunctional use of the second output port 12 of the housing 10, for example, the muffler and the second exhaust pipe 500 can be connected, or the second exhaust pipe 500 with different sizes can be selected, so that the gas flow rate can better meet the actual requirement.

In the present embodiment, the input duct 40 includes a second fixed portion 41 fixedly connected to the housing 10 and a second movable portion 42 located at an end of the second fixed portion 41 away from the housing 10, and the second movable portion 42 is detachably connected to the second fixed portion 41.

Specifically, the second fixing portion 41 may be inserted into the air inlet pipes 600 of different models through the model or type of the second movable portion 42 to limit the amount of airflow introduced into the housing 10, and assist in adjusting the airflow between the adjusting valve 30 and the blocking member 20, or the second fixing portion 41 may be connected to different hot airflow discharge devices through different second movable portions 42 to expand the application range of the airflow reversing device.

In this embodiment, one end of the first output pipeline 50, which is far away from the housing 10, is provided with a first connecting piece 70, the first connecting piece 70 is arranged along the circumferential direction of the first output pipeline 50, and one side of the first connecting piece 70, which is far away from the first output pipeline 50, is an arc-shaped surface.

Specifically, the first output pipeline 50 is mainly used for connecting an airflow receiving device, and the connection airtightness between the airflow receiving device and the casing 10 directly affects the conveying efficiency and the heat utilization rate of the airflow, and in order to efficiently utilize the airflow by the airflow receiving device, the connection airtightness between the first output pipeline 50 and the airflow receiving device needs to be improved. One side of the first connecting member 70 departing from the first output pipeline 50 may be an arc surface or a spherical surface, and the outer diameter of the first connecting member is gradually reduced from one end close to the housing 10 along the direction departing from the housing 10, so that a part of the first connecting member 70 extends into the airflow receiving device, is abutted against the appropriate outer diameter, and continues to deeply generate interference fit, thereby ensuring the air tightness.

In this embodiment, the maximum inner diameter of the second connector 200 is greater than the maximum outer diameter of the first connector 70.

Specifically, the biggest internal diameter of second connecting piece 200 is the internal diameter that the one end border department of first exhaust pipe 100 was kept away from to second connecting piece 200, the biggest external diameter of first connecting piece 70 is the external diameter that the one end border department of casing 10 was kept away from to first connecting piece 70, the biggest internal diameter of second connecting piece 200 is greater than the biggest external diameter of first connecting piece 70, when making the nested second connecting piece 200 that gets into of first connecting piece 70 and support each other tightly, second connecting piece 200 can shelter from the outside of first connecting piece 70 completely, further improve and block the accumulational ability of sleet and dust, avoid the junction to rust and pass a mouthful jam.

In this embodiment, the first exhaust pipe 100 has a flow guiding section 110 and an output section 120 perpendicular to each other, the flow guiding section 110 and the output section 120 are in a chamfered transition, and one end of the flow guiding section 110 away from the output section 120 is fixed to the second connection member 200.

Specifically, the existing exhaust pipe is usually a straight pipe, so that the hot air flows vertically upwards, carbon deposition is easily caused, and the direction of the hot air flow in the exhaust pipe is inconsistent with the direction of the hot air flow when the hot air is used by the air flow receiving device, so that the exhaust pipe is unsmooth in exhaust. In the embodiment, the first exhaust pipe 100 is provided with the guide section 110 and the output section 120 which are perpendicular to each other, so that the flow direction of hot air is changed before the hot air flows to the air flow receiving device, the direction of the air flow flowing out of the output section 120 is consistent with the direction of the air flow when the hot air is used by the air flow receiving device, the circulation of the air flow is promoted, and the blockage of a pipeline and carbon deposition are avoided. Further, the diversion section 110 and the output section 120 are in a chamfer transition, so that the air flow can be prevented from being blocked when the air flow is turned in the first exhaust pipe 100.

With continued reference to fig. 6 and 7, in the present embodiment, a sealing member 300 disposed along a circumferential direction of the output section 120 and a supporting member 400 for reinforcing and fixing the sealing member 300 and the first exhaust pipe 100 are disposed at an end of the output section 120 away from the flow guiding section 110, and two ends of the supporting member 400 are respectively connected to the sealing member 300 and the first exhaust pipe 100.

Specifically, with continued reference to fig. 1, in the prior art, a tapered pipe joint is usually used to connect the exhaust pipe and the airflow receiving device, and the large-diameter opening section of the tapered pipe joint is parallel to the ground, so that impurities such as dust, rain water, frost and snow are easily accumulated to cause blockage or rust. The utility model discloses a sealing member 300 is preferred to be the flange board, the face and the axial vertical of first exhaust pipe 100 to the face can support tightly with air current receiving arrangement, improves the leakproofness. The sealing member 300 is fixedly connected with the first exhaust pipe 100 through the supporting member 400 to form a triangular system, thereby improving structural stability.

Second embodiment

Another embodiment of the present invention provides a dump truck comprising an engine, a cargo box, and an exhaust device as described in the second embodiment, wherein the engine is connected to the input port 13, and the cargo box is connected to the first output port 11.

Specifically, the engine is connected to the input duct 40 through the intake duct 600 and communicates with the housing 10 through the input port 13, the cargo box communicates with the input duct 40 through the first exhaust duct 100 and communicates with the housing 10 through the first output port 11, and the second exhaust duct 500 may be connected to the muffler or open to the atmosphere.

The utility model provides an air current switching-over device sets up spherical first connecting piece 70 through the end at first output pipeline 50, sets up conical second connecting piece 200 at the end of first exhaust pipe 100, and the big opening orientation of this toper second connecting piece 200 is down for rainwater or dust flow down along the outer wall of second connecting piece 200 under the action of gravity, prevent that rainwater or dust from piling up the junction at first output pipeline 50 and first exhaust pipe 100. The first connecting piece 70 abuts against the inside of the second connecting piece 200, so that the first connecting piece 70 is half wrapped by the second connecting piece 200, the joint of the first output pipeline 50 and the first exhaust pipe 100 is prevented from being exposed in the air, and the joint of the first output pipeline 50 and the first exhaust pipe 100 is further protected. In addition, the inner walls of the first connecting piece 70 and the second connecting piece 200 are tightly abutted, and because the outer wall of the second connecting piece 200 is arc-shaped, the outer diameter of the second connecting piece 200 is gradually increased along the direction close to the first output pipeline 50, the inner diameter of the second connecting piece 200 is gradually enlarged along the direction close to the first output pipeline 50, the adaptability of the first connecting piece and the second connecting piece is higher, the area of the outer diameter of the first connecting piece 70 tightly abutted against the inner wall of the second connecting piece 200 is larger, and the air tightness of the gas transmission pipeline is greatly improved. In addition, the regulating valve 30 can direct the flow of gas to the first outlet 11 to the first outlet duct 50 and the first exhaust pipe 100, and can also control the amount of gas flowing out of the first outlet 11 to avoid hot gas starvation or overheating of the cargo box.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An air flow reversing device, comprising:

a housing (10) having a first outlet (11) and a second outlet (12) for the output of gas, and an inlet (13) for the input of gas;

-a regulating valve (30) for regulating the passage of gas to said first output (11) or to said second output (12);

the first output pipeline (50) is communicated with the first output port (11), one end, far away from the shell (10), of the first output pipeline (50) is provided with a first connecting piece (70) which is axially arranged along the first output pipeline (50), and the outer side face of the first connecting piece (70) is an arc-shaped face;

first exhaust pipe (100), the intercommunication first output pipeline (50), first exhaust pipe (100) are close to the one end of first output pipeline (50) have with second connecting piece (200) of first connecting piece (70) butt, second connecting piece (200) are followed first exhaust pipe (100) circumference sets up, second connecting piece (200) are the internal diameter along deviating from the toper of first exhaust pipe (100) direction gradual increase.

2. The gas flow reversing device according to claim 1, further comprising a blocking member (20), wherein the blocking member (20) has a fixed end rotatably connected to the housing (10) and a movable end opposite to the fixed end, and the adjusting valve (30) rotates the movable end to block the first output port (11) or the second output port (12).

3. A gas flow reversing device according to claim 2, characterized in that the regulating valve (30) comprises a control member (31) rotatably connected to the housing (10) and a guide rail (32) for providing a rotational path for the control member (31), the control member (31) being slidably connected to the guide rail (32) at an end thereof adjacent to the inlet opening (13), the control member (31) being fixedly connected to the blocking member (20).

4. A gas flow reversing device according to claim 2, further comprising an inlet duct (40) communicating with the inlet port (13), a first outlet duct (50) communicating with the first outlet port (11), and a second outlet duct (60) communicating with the second outlet port (12);

the cross section of one end of the first output pipeline (50) close to the blocking piece (20) and the axial direction of the first output pipeline (50) form a first included angle (alpha) of 30-90 degrees, the cross section of one end of the second output pipeline (60) close to the blocking piece (20) and the axial direction of the second output pipeline (60) form a second included angle (beta) of 30-90 degrees, and the openings of the first included angle (alpha) and the second included angle (beta) face the input port (13).

5. The gas flow reversing device according to claim 4, characterized in that the second outlet duct (60) comprises a first fixed part (61) fixedly connected to the housing (10) and a first movable part (62) at an end of the first fixed part (61) remote from the housing (10), the first movable part (62) being detachably connected to the first fixed part (61).

6. A gas flow reversing device according to claim 4, characterized in that the inlet duct (40) comprises a second fixed part (41) fixedly connected to the housing (10) and a second movable part (42) at an end of the second fixed part (41) remote from the housing (10), the second movable part (42) being detachably connected to the second fixed part (41).

7. A gas flow reversing device according to claim 1, characterized in that the largest inner diameter of the second connecting piece (200) is larger than the largest outer diameter of the first connecting piece (70).

8. The gas flow reversing device according to claim 1, characterized in that the first exhaust pipe (100) has a flow guiding section (110) and an output section (120) which are perpendicular to each other, the flow guiding section (110) and the output section (120) are in a chamfered transition, and one end of the flow guiding section (110) far away from the output section (120) is fixed with the second connecting piece (200).

9. The gas flow reversing device according to claim 8, characterized in that the end of the output section (120) far away from the flow guiding section (110) is provided with a sealing member (300) arranged along the circumference of the output section (120) and a supporting member (400) for reinforcing and fixing the sealing member (300) and the first exhaust pipe (100), and two ends of the supporting member (400) are respectively connected with the sealing member (300) and the first exhaust pipe (100).

10. A dump truck characterized by comprising an engine, a cargo box and the flow reversing device according to any one of claims 1-9, the engine being connected to the inlet (13) and the cargo box being connected to the first outlet (11).

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