Module assembly type grain elevator silencer

Abstract

The utility model discloses a module assembly type grain elevator silencer which comprises a silencing pipe and a sound absorbing material installed in the silencing pipe, and an air inlet is formed in the circular outer wall of the upper end of the silencing pipe to suck separated gas. The round outer wall of the right end of the silencing pipe is fixedly connected with a guide pipe to guide the gas subjected to noise reduction to be discharged, a plurality of flow dividing pipes are arranged in the silencing pipe at equal intervals to disperse and concentrate flowing gas, and the interiors of the flow dividing pipes are all in transmission connection with positioning rods; spiral blades are fixedly connected to the circular outer walls of the multiple positioning rods so as to reduce the flowing speed of gas, the flow dividing pipes, the positioning rods and the spiral blades are installed, wind resistance is reduced through the flow dividing pipes, the wind can push the spiral blades on the positioning rods to rotate when entering the flow dividing pipes, turbulent flow and resistance are reduced, and the effect of reducing the gas flow is achieved. And vibration generated when the wind speed is high and the sound-absorbing materials make contact is reduced, and therefore weakening of the noise of the silencing pipe on the wind power is more comprehensively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to the silencing module of a grain suction machine, and particularly relates to a modular assembled silencing device for a grain suction machine. Background Technique

[0002] The function of the silencing device of the grain suction machine is to reduce the noise generated during the operation of the grain suction machine and improve the comfort of the working environment. Usually, devices such as silencing pipes are used to reduce the spread of noise. The inside of the silencing pipe is usually filled with sound-absorbing materials, which can effectively absorb noise and reduce its spread. However, when the wind speed of the gas received inside the silencing pipe is too fast, a large wind resistance will be caused between the wind speed and the sound-absorbing material installed on the inner wall of the silencing pipe, resulting in more turbulence and eddy currents, increasing the generation of noise and reducing the silencing effect. Content of the Utility Model

[0003] The purpose of the utility model is to provide a modular assembled silencing device for a grain suction machine to solve the problem that a large wind resistance will be caused between the wind speed and the sound-absorbing material installed on the inner wall of the silencing pipe, resulting in more turbulence and eddy currents, increasing the generation of noise and reducing the silencing effect as mentioned in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A modular assembled silencing device for a grain suction machine, including a silencing pipe and a sound-absorbing material installed inside the silencing pipe;

[0005] An air inlet is provided on the circular outer wall at the upper end of the silencing pipe to suck in the separated gas;

[0006] A guiding pipe is fixedly connected to the circular outer wall at the right end of the silencing pipe to guide the discharged gas after noise reduction;

[0007] A plurality of shunt pipes are equidistantly arranged inside the silencing pipe to disperse the centrally flowing gas. A positioning rod is drivingly connected inside each of the plurality of shunt pipes, and a spiral blade is fixedly connected to the circular outer wall of each of the plurality of positioning rods to reduce the flow rate of the gas.

[0008] Preferably, a fixing frame is fixedly connected between the outer walls at the left ends of the plurality of shunt pipes to limit the positions of the plurality of shunt pipes. A plurality of shunt openings on the same horizontal plane as the shunt pipes are equidistantly opened inside the outer wall at the left end of the fixing frame to guide the gas into the inside of the shunt pipes.

[0009] Preferably, cross frames are fixedly connected to the outer walls at the upper and lower ends of the plurality of shunt pipes and respectively close to the left and right sides. A positioning shaft is arranged inside the center of each of the two cross frames to limit the positions of the positioning rods.

[0010] Preferably, the shunt pipe is designed to be through from left to right for gas flow, and the shunt pipe and the fixing frame are fixedly connected by welding.

[0011] Preferably, an exhaust air duct is provided on the upper side of the guiding pipe, and a flange interface is provided between the guiding pipe and the exhaust air duct to fixedly connect the guiding pipe and the exhaust air duct.

[0012] Preferably, an exhaust air opening opening to the right is fixedly connected to the outer wall of the upper end of the exhaust air duct to discharge the noise-reduced gas into the atmosphere, and support frames are fixedly connected to the outer walls of the front and rear ends of the silencing pipe.

[0013] Preferably, a plurality of support joints are fixedly connected to the circular outer wall of the silencing pipe at equal intervals, and the sound-absorbing material is made by expanding foam.

[0014] Compared with the prior art, the present utility model provides a modular assembled grain suction machine silencing device, which has the following beneficial effects:

[0015] By installing a shunt pipe, a positioning rod and a spiral blade, when the relatively fast wind speed enters the interior of the silencing pipe through the air inlet, the wind resistance can be reduced through the shunt pipe, the wind speed can be slowed down, and at the same time, when the wind enters the shunt pipe, it will push the spiral blade on the positioning rod to rotate, reducing turbulence and resistance, and reducing the vibration when the relatively fast wind speed contacts the sound-absorbing material, so as to more comprehensively increase the reduction of the wind noise by the silencing pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a modular assembled grain suction machine silencing device of the present utility model.

[0017] Figure 2 It is a partial structural schematic diagram of a side view cross-section of the silencing pipe area of the present utility model.

[0018] Figure 3 It is a schematic side view structure diagram of the shunt pipe area of the present utility model.

[0019] In the figure: 1, silencing pipe; 2, support frame; 3, air inlet; 4, support joint; 5, guiding pipe; 6, flange interface; 7, exhaust air duct; 8, exhaust air opening; 9, shunt opening; 10, fixing frame; 11, shunt pipe; 12, sound-absorbing material; 13, cross frame; 14, positioning shaft; 15, spiral blade; 16, positioning rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides a silencing device for a modular assembled grain suction machine as shown in Figures 1-3 Figure 3, which includes a silencing pipe 1 and a sound-absorbing material 12 installed inside the silencing pipe 1;

[0022] An air inlet 3 is provided on the circular outer wall at the upper end of the silencing pipe 1 to suck in the separated gas;

[0023] A guiding pipe 5 is fixedly connected to the circular outer wall at the right end of the silencing pipe 1 to guide the discharged gas after noise reduction. The gas discharged from the separated grains is guided by an external axial flow fan and then input into the silencing pipe 1 from the air inlet 3 and flows. The flowing gas passes through the sound-absorbing material 12 to reduce the flow speed, and then is guided and discharged outward through the guiding pipe 5;

[0024] A plurality of shunt pipes 11 are equidistantly arranged inside the silencing pipe 1 to disperse the centrally flowing gas. A positioning rod 16 is drivingly connected inside each of the plurality of shunt pipes 11. A spiral blade 15 is fixedly connected to the circular outer wall of each of the plurality of positioning rods 16 to reduce the flow speed of the gas. Before the gas enters the guiding pipe 5, it will be shunted and guided by the shunt pipes 11 to reduce the wind speed. Moreover, the gas entering the guiding pipe 5 will push the spiral blade 15 to rotate, thereby reducing the flow speed of the gas for the second time, reducing the wind resistance, and assisting the sound-absorbing material 12 to reduce the noise generated during gas flow.

[0025] As shown in Figure 2 and Figure 3 Figure 5, a fixing frame 10 is fixedly connected between the outer walls at the left ends of the plurality of shunt pipes 11 to limit the positions of the plurality of shunt pipes 11. A plurality of shunt ports 9 on the same horizontal plane as the shunt pipes 11 are equidistantly opened inside the outer wall at the left end of the fixing frame 10 to guide the gas into the inside of the shunt pipes 11. Cross frames 13 are fixedly connected to the outer walls at the upper and lower ends of the plurality of shunt pipes 11 and close to the left and right sides respectively. A positioning shaft 14 is arranged inside the center of each of the two cross frames 13 to limit the position of the positioning rod 16.

[0026] The positions of the plurality of shunt pipes 11 are limited by the fixing frame 10. At the same time, the gas is guided and dispersed to move inside the shunt pipes 11 through the shunt ports 9 to reduce the wind speed. When the spiral blade 15 is blown to rotate, both ends of the positioning rod 16 will drive the positioning shaft 14 to rotate inside the cross frame 13, thereby limiting the position of the positioning shaft 14.

[0027] As shown in Figure 2 Figure 6, the shunt pipe 11 is designed to be through from left to right for gas flow, and the shunt pipe 11 and the fixing frame 10 are fixedly connected by welding.

[0028] By fixedly connecting the shunt pipe 11 and the fixing frame 10 by welding, the vibration amplitude of the wind speed passing through the shunt pipe 11 can be reduced.

[0029] As Figure 1 shown, an exhaust air duct 7 is provided on the upper side of the guiding pipe 5, and a flange interface 6 is provided between the guiding pipe 5 and the exhaust air duct 7 to fixedly connect the guiding pipe 5 and the exhaust air duct 7. An exhaust air outlet 8 opening to the right is fixedly connected to the outer wall of the upper end of the exhaust air duct 7 to discharge the noise-reduced gas into the atmosphere. Support frames 2 are fixedly connected to the outer walls of the front and rear ends of the silencing pipe 1.

[0030] When the guiding pipe 5 guides the gas to move, the gas can be continuously guided through the exhaust air duct 7 and discharged to the atmosphere through the exhaust air outlet 8. The silencing pipe 1 is fixed by the support frames 2 and the installation positions of the support frames 2 are restricted.

[0031] As Figure 1 and Figure 2 shown, a plurality of support joints 4 are fixedly connected to the circular outer wall of the silencing pipe 1 at equal intervals, and the sound-absorbing material 12 is made by expanding foam.

[0032] The support joints 4 are used to thicken the welded joints of the silencing pipe 1 to avoid the occurrence of fracture at the welded joints of the silencing pipe 1.

[0033] The implementation principle of this embodiment is as follows: The gas discharged from the separated grains is guided by an external axial flow fan and then input into the silencing pipe 1 from the air inlet 3 and flows. The flowing gas reduces its flow velocity through the sound-absorbing material 12 and is then guided outwards by the guiding pipe 5. After being guided by the guiding pipe 5, it is discharged into the atmosphere through the exhaust air outlet 8 at the upper end of the exhaust air duct 7. Before the gas enters the guiding pipe 5, it will be shunted and guided by the shunt pipe 11 to reduce the wind speed, and the gas entering the interior of the guiding pipe 5 will push the spiral blade 15 to rotate, reducing the flow velocity of the gas for the second time, thereby reducing the wind resistance and assisting the sound-absorbing material 12 to reduce the noise during gas flow.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A modular assembled grain suction machine silencer device, comprising a silencer pipe (1) and a sound absorbing material (12) installed inside the silencer pipe (1); The upper circular outer wall of the silencer pipe (1) is provided with an air inlet (3) for inhaling the separated gas; A guide pipe (5) is fixedly connected to the circular outer wall at the right end of the silencer pipe (1) to guide the exhaust of the gas after noise reduction; Features: The silencer pipe (1) is provided with a plurality of shunt pipes (11) at equal intervals inside to disperse the concentrated flowing gas, the plurality of shunt pipes (11) are all drivingly connected inside with positioning rods (16), and the circular outer walls of the plurality of positioning rods (16) are all fixedly connected with spiral blades (15) to reduce the flow velocity of the gas.

2. The modular assembly type grain sucking machine silencer according to claim 1 is characterized in that: A fixing frame (10) is fixedly connected between the left end outer walls of the plurality of diverter tubes (11) to limit the positions of the plurality of diverter tubes (11), and a plurality of diverter ports (9) are equidistantly provided inside the left end outer wall of the fixing frame (10) on the same horizontal plane as the diverter tubes (11) to guide gas into the interior of the diverter tubes (11).

3. The modular assembly type grain suction machine silencer according to claim 1 is characterized in that: A cross frame (13) is fixedly connected to the outer walls of the upper and lower ends of the plurality of flow dividing pipes (11) and close to the left and right sides respectively, and a positioning shaft (14) is provided inside the center of the two cross frames (13) to limit the position of the positioning rod (16).

4. The modular assembled grain sucking machine silencer according to claim 1 is characterized in that: The diverter pipe (11) is designed to be through-type to allow gas to circulate, and the diverter pipe (11) and the fixing frame (10) are fixedly connected by welding.

5. The modular assembled grain sucking machine silencer device according to claim 1 is characterized in that: An exhaust pipe (7) is arranged on the upper side of the guide pipe (5), and a flange interface (6) is arranged between the guide pipe (5) and the exhaust pipe (7) to fixedly connect the guide pipe (5) and the exhaust pipe (7).

6. The modular assembled grain sucking machine silencer device according to claim 5 is characterized in that: An exhaust port (8) opening to the right is fixedly connected to the upper outer wall of the exhaust pipe (7) to discharge the noise-reduced gas into the atmosphere, and the outer walls at both the front and rear ends of the silencer pipe (1) are fixedly connected to a support frame (2).

7. The modular assembled grain sucking machine silencer device according to claim 1 is characterized by: The circular outer wall of the silencer pipe (1) is equidistantly and fixedly connected with a plurality of support nodes (4), and the sound absorbing material (12) is made of expanded foam.

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