Mixed guniting device and guniting method

Abstract

The invention relates to a mixed guniting device and a guniting method, and relates to the technical field of material guniting, the mixed guniting device comprises a moving mechanism, a stirring tank, a stirring mechanism and a guniting mechanism; the stirring tank is arranged on the moving mechanism, the slurry spraying mechanism is used for spraying slurry into the stirring tank, and a feeding opening is formed in the stirring tank; the stirring mechanism comprises a cylinder, an auger, a supporting rod and a power assembly, the cylinder is vertically arranged in the stirring tank, one end of the supporting rod is connected with the outer circumferential surface of the cylinder, the other end of the supporting rod is connected with the inner circumferential surface of the stirring tank, the auger is rotationally connected into the cylinder, and the power assembly is used for driving the auger to rotate; a first circulation channel is arranged between the bottom of the cylinder and the bottom of the stirring tank, and a second circulation channel is arranged between the top of the cylinder and the top of the stirring tank. During guniting, the contact area between the material surface and sprayed slurry can be increased, and then the guniting quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of material spraying, in particular to a mixed spraying device and a spraying method. Background Art

[0002] The mixing spraying device is a device used to mix materials with slurry in industrial production. The uniformity of material mixing plays a key role in ensuring the quality and performance of the product. The mixing spraying device can atomize the slurry and spray it evenly on the surface of the material, mix it with the material, increase the contact area and mass transfer effect between the slurry and the material, and thus improve the mixing effect of the material and the slurry.

[0003] At present, in the prior art, when spraying materials, the materials are usually placed in a container, stirred mechanically or manually, and slurry is sprayed into the container during the stirring process so that the slurry adheres to the surface of the material to achieve spraying of the material.

[0004] However, whether it is stirred manually or mechanically, there may be materials at the bottom of the container that cannot be turned up, so that the materials in the upper half of the container are fully sprayed, while the materials at the bottom of the container cannot fully contact with the slurry, thereby reducing the adhesion effect of the slurry on the material surface.

[0005] In order to solve the above problems, the applicant has designed a mixed spraying device and a spraying method. Summary of the invention

[0006] In order to save labor costs and time costs when transporting goods, the present invention provides a mixing spraying device and a spraying method.

[0007] In a first aspect, the present invention provides a mixing spraying device, the mixing spraying device comprising a moving mechanism, a stirring tank, a stirring mechanism and a spraying mechanism;

[0008] The stirring tank is arranged on the moving mechanism, the spraying mechanism is used for spraying slurry into the stirring tank, and a feed port is provided on the stirring tank;

[0009] The stirring mechanism comprises a cylinder, an auger, a support rod and a power assembly, wherein the cylinder is vertically arranged inside the stirring tank, one end of the support rod is connected to the outer circumference of the cylinder, and the other end of the support rod is connected to the inner circumference of the stirring tank, the auger is rotatably connected inside the cylinder, and the power assembly is used to drive the auger to rotate;

[0010] A first circulation channel is provided between the bottom of the cylinder and the bottom of the stirring tank, and a second circulation channel is provided between the top of the cylinder and the top of the stirring tank.

[0011] Optionally, the stirring mechanism also includes a rotating ring, a separation plate and a power rod, the rotating ring is rotatably connected to the cylinder, the separation plate is fixedly connected to the outer circumferential surface of the rotating ring, one end of the power rod is fixedly connected to the separation plate, and the other end of the power rod is transmission-connected to the power assembly.

[0012] By adopting the above technical scheme, since the material is lifted by the auger and scattered through the separation plate when the material is sprayed, the material is dispersed in the mixing tank, thereby increasing the contact area between the material surface and the sprayed slurry during spraying, thereby improving the spraying quality; the setting of the first circulation channel and the second circulation channel enables the material in the mixing tank to form a circulation process, thereby allowing the material to be sprayed multiple times, thereby improving the adhesion effect of the slurry on the material surface.

[0013] Optionally, a plurality of guide grooves are formed on the separation plate, and the direction of the guide grooves points from the circumferential direction of the separation plate to the center direction of the separation plate.

[0014] Optionally, the stirring mechanism further comprises an annular screen, the inner circumference of the annular screen is fixedly connected to the cylinder, and the outer circumference of the annular screen is fixedly connected to the stirring tank.

[0015] Optionally, the end of the circular ring screen close to the stirring tank is V-shaped, and the height of the end of the circular ring screen close to the stirring tank is lower than the height of the end close to the cylinder.

[0016] Optionally, a discharge port is provided at the bottom of the stirring tank, a discharge pipe is connected to the bottom of the stirring tank, the discharge pipe is communicated with the discharge port, a baffle is movably connected between the stirring tank and the discharge pipe, and a discharge switch is provided inside the discharge pipe.

[0017] Optionally, the moving mechanism includes a moving wheel, a base plate, a bracket and a connecting column, the moving wheel is rotatably connected to the base plate, the bracket is arranged on the base plate, one end of the connecting column is fixedly connected to the bracket, and the stirring tank is fixedly connected to the other end of the connecting column.

[0018] Optionally, the spraying mechanism includes a spraying machine body, a connecting pipe, a spray gun and an atomizing nozzle, the spray gun is threadedly connected to the top of the mixing tank and passes through the mixing tank, one end of the connecting pipe is connected to the spraying machine body, and the other end of the connecting pipe is connected to the spray gun, the atomizing nozzle is arranged on the end of the spray gun away from the connecting pipe, and the atomizing nozzle is located inside the mixing tank.

[0019] Optionally, a one-way pressure relief valve is also provided on the top of the mixing tank, a pressure relief pipe is connected to the one-way pressure relief valve, and one end of the pressure relief pipe away from the one-way pressure relief valve is connected to the spraying machine body.

[0020] In a second aspect, the present invention provides a mixed spraying method, using the mixed spraying device described in the first aspect, a mixed spraying method comprising the following steps:

[0021] S1: Before loading, insert the baffle between the mixing tank and the discharge pipe;

[0022] S2: Add the material into the mixing tank through the feed port. At this time, the material gathers at the bottom of the mixing tank under the action of gravity;

[0023] S3: Start the power assembly to drive the auger to rotate. When the auger rotates, the material enters the auger through the first flow channel. The material is transported by the auger and flows out to the separation plate through the second flow channel. When the separation plate rotates, it throws the material around the box.

[0024] S4: starting the main body of the shotcrete machine, which sprays slurry into the mixing tank;

[0025] S5: After the slurry injection is completed, the baffle and the discharge switch are opened to allow the material to flow out from the discharge pipe.

[0026] The present invention has at least the following effects:

[0027] 1. When the auger rotates, the material is driven from the bottom of the mixing tank along the length direction of the cylinder to the top of the mixing tank, and then the material moves from the second circulation channel to the separation plate. As the separation plate rotates driven by the transmission shaft, the material on the separation plate is thrown down from the top of the mixing tank by the separation plate under the action of centrifugal force. Then, the spraying mechanism sprays the thrown material so that the slurry adheres to the material. When spraying the material, the material is lifted by the auger and thrown through the separation plate, so that the material is dispersed in the mixing tank, thereby increasing the contact area between the material surface and the sprayed slurry during spraying, thereby improving the spraying quality; the setting of the first circulation channel and the second circulation channel enables the material in the mixing tank to form a circulation process, thereby enabling the material to be sprayed multiple times, thereby improving the adhesion effect of the slurry on the material surface.

[0028] 2. Due to the setting of the guide groove, the material slides along the guide groove, thereby reducing the probability of sliding friction between the material and the separation plate, thereby reducing the probability of dust generation after material friction, and thereby reducing the occurrence of materials sticking to each other due to the combination of dust and slurry.

[0029] 3. When the material is thrown down by the separation plate, the spraying mechanism sprays the surface of the free-falling material, and then it falls onto the circular screen. The setting of the circular screen can buffer the material, reduce the speed of the material when it falls, and slow down the impact force of the material on the bottom of the mixing tank, thereby reducing the probability of material damage due to impact. The end of the circular screen close to the mixing tank is V-shaped, so that the material can fall from the circular screen along the V-shaped trajectory of the circular screen, thereby reducing the probability of material accumulation on the circular screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The overall structure diagram provided for Example 1 of the present application Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the internal structure of the stirring mechanism in Example 1 of the present application;

[0032] Figure 3 This is a schematic diagram of the structure of the separation plate in Example 1 of the present application.

[0033] 100, mixing tank; 110, feed inlet; 120, discharge outlet; 130, discharge pipe; 140, baffle; 150, discharge switch; 200, moving mechanism; 210, moving wheel; 220, bottom plate; 230, bracket; 240, connecting column; 300, stirring mechanism; 310, cylinder; 320, auger; 330, support rod; 340, power assembly; 341, drive motor; 342, transmission shaft; 350, rotating ring; 360, separation plate; 361, guide groove; 370, power rod; 380, circular screen; 400, spraying mechanism; 410, spraying machine body; 420, connecting pipe; 430, spray gun; 440, atomizing nozzle; 450, one-way pressure relief valve; 460, pressure relief pipe. DETAILED DESCRIPTION

[0034] Example 1: Please refer to Figure 1-Figure 3 An embodiment of the present application provides a mixing spraying device, which includes a moving mechanism 200, a stirring tank 100, a stirring mechanism 300 and a spraying mechanism 400. The moving mechanism 200 is used to move the stirring tank 100, the stirring mechanism 300 is arranged on the stirring tank 100, and is used to stir the material in the stirring tank 100. The spraying mechanism 400 is used to spray into the stirring tank 100.

[0035] Reference Figure 1-Figure 1The moving mechanism 200 includes a moving wheel 210, a bottom plate 220, a bracket 230 and a connecting column 240. The moving wheel 210 is rotatably connected to the bottom plate 220. The bracket 230 is welded or bolted to the bottom plate 220. One end of the connecting column 240 is fixedly connected to the bracket 230. The mixing tank 100 is fixedly connected to the other end of the connecting column 240. Before spraying, the mixing tank 100 is moved to a designated position by the moving mechanism 200. After the spraying is completed, the mixing tank 100 is moved to the unloading area by the moving mechanism 200.

[0036] Reference Figure 2-Figure 3 The stirring mechanism 300 includes a cylinder 310, an auger 320, a support rod 330, a power assembly 340, a rotating ring 350, a separation plate 360 ​​and a power rod 370. The stirring tank 100 is provided with a feed inlet 110, and the bottom of the stirring tank 100 is provided with a discharge port 120. The bottom of the stirring tank 100 is connected with a discharge pipe 130 by bolts, and the discharge pipe 130 is connected with the discharge port 120. A baffle 140 is movably connected between the stirring tank 100 and the discharge pipe 130, and a discharge switch 150 is connected with the discharge pipe 130 by bolts.

[0037] The cylinder 310 is vertically arranged inside the mixing tank 100, one end of the support rod 330 is connected to the outer circumference of the cylinder 310, and the other end of the support rod 330 is connected to the inner circumference of the mixing tank 100, the auger 320 is rotatably connected inside the cylinder 310, the power assembly 340 includes a driving motor 341 and a transmission shaft 342, the driving motor 341 is connected to the top of the mixing tank 100 by bolts, the output end of the driving motor 341 is transmission-connected to the auger 320 through the transmission shaft 342, a first circulation channel is provided between the bottom of the cylinder 310 and the bottom of the mixing tank 100, and a second circulation channel is provided between the top of the cylinder 310 and the top of the mixing tank 100, the rotating ring 350 is rotatably connected to the cylinder 310, the separation plate 360 ​​is fixedly connected to the outer circumference of the rotating ring 350, one end of the power rod 370 is fixedly connected to the separation plate 360, and the other end of the power rod 370 is transmission-connected to the transmission shaft 342.

[0038] When spraying the material, the baffle 140 is first placed between the mixing tank 100 and the discharge pipe 130 to prevent the material from leaking out of the mixing tank 100, and then the material is added to the mixing tank 100 through the feed port 110. When the material enters the mixing tank 100, the material gathers above the baffle 140 through the first circulation channel and contacts the auger 320. Then, the auger 320 is driven to rotate by the driving motor 341. When the auger 320 rotates, the material is driven from the bottom of the mixing tank 100 along the length direction of the cylinder 310 to the top of the mixing tank 100. Then, the material moves from the second circulation channel to the separation plate 360. Since the separation plate 360 ​​rotates driven by the transmission shaft 342, the material on the separation plate 360 ​​is thrown down from the top of the mixing tank 100 by the separation plate 360 ​​under the action of centrifugal force. Then, the spraying mechanism 400 sprays the thrown material so that the slurry is attached to the material.

[0039] When the material is sprayed, the material is lifted by the auger 320 and scattered by the separation plate 360, so that the material is dispersed in the mixing tank 100, thereby increasing the contact area between the material surface and the sprayed slurry during spraying, thereby improving the spraying quality; the setting of the first circulation channel and the second circulation channel allows the material in the mixing tank 100 to form a circulation process, so that the material can be sprayed multiple times, thereby improving the adhesion effect of the slurry on the material surface.

[0040] Reference Figure 3 , the separation plate 360 ​​is provided with a plurality of guide grooves 361, and the direction of the guide grooves 361 points from the circumferential direction of the separation plate 360 ​​to the center direction of the separation plate 360; when the material is transported to the separation plate 360 ​​by the auger 320, the transmission shaft 342 drives the separation plate 360 ​​to rotate, and the material moves along the guide grooves 361 on the separation plate 360 ​​toward the edge of the separation plate 360, and is thrown into the mixing tank 100 by the separation plate 360; due to the setting of the guide grooves 361, the material slides along the guide grooves 361, thereby reducing the probability of sliding friction between the material and the separation plate 360, thereby reducing the probability of dust generated after the friction of the material, and thereby reducing the occurrence of the material sticking to each other due to the combination of dust and slurry.

[0041] Reference Figure 2 The stirring mechanism 300 also includes a circular screen 380, the inner circumference of the circular screen 380 is fixedly connected to the cylinder 310, and the outer circumference of the circular screen 380 is fixedly connected to the stirring tank 100; the end of the circular screen 380 close to the stirring tank 100 is V-shaped, and the height of the end of the circular screen 380 close to the stirring tank 100 is lower than the height of the end close to the cylinder 310.

[0042] When the material is thrown down by the separation plate 360, the spraying mechanism 400 sprays the surface of the free-falling material, and then it falls onto the annular screen 380. The setting of the annular screen 380 can buffer the material, reduce the speed of the material when falling, and reduce the impact force of the material on the bottom of the mixing tank 100, thereby reducing the probability of the material being damaged due to impact. The end of the annular screen 380 close to the mixing tank 100 is V-shaped, so that the material can fall from the annular screen 380 along the V-shaped trajectory of the annular screen 380, thereby reducing the probability of material accumulation on the annular screen 380.

[0043] Reference Figure 1 The spraying mechanism 400 includes a spraying machine body 410, a connecting pipe 420, a spray gun 430 and an atomizing nozzle 440. The spray gun 430 is threadedly connected to the top of the mixing tank 100 and penetrates the mixing tank 100. One end of the connecting pipe 420 is connected to the spraying machine body 410, and the other end of the connecting pipe 420 is connected to the spray gun 430. The atomizing nozzle 440 is threadedly connected to the end of the spray gun 430 away from the connecting pipe 420, and the atomizing nozzle 440 is located inside the mixing tank 100. The top of the mixing tank 100 is also connected to a one-way pressure relief valve 450 by bolts, and the one-way pressure relief valve 450 is connected to a pressure relief pipe 460, and the end of the pressure relief pipe 460 away from the one-way pressure relief valve 450 is connected to the spraying machine body 410.

[0044] During spraying, the slurry is placed in the spraying machine body 410, and the spraying machine body 410 is started. The slurry is pressurized to the spray gun 430 through the connecting pipe 420, and the slurry is sprayed into the mixing tank 100 through the atomizing nozzle 440. Since the mixing tank 100 is in a high-pressure state during spraying, the air pressure in the mixing tank 100 is discharged through the one-way pressure relief valve 450 and connected to the spraying machine body 410 through the pressure relief pipe 460, thereby achieving the effect of high-pressure gas recycling.

[0045] The implementation principle of a mixed spraying device in the embodiment of the present application is:

[0046] The mixing tank 100 is moved to a designated position by the moving mechanism 200, and the baffle 140 is placed between the mixing tank 100 and the discharge pipe 130 to prevent the material from leaking out of the mixing tank 100. Then, the material is added to the mixing tank 100 through the feed port 110. After the material enters the mixing tank 100, the material is gathered above the baffle 140 through the first flow channel and contacts the auger 320. Then, the auger 320 is driven to rotate by the driving motor 341. When the auger 320 rotates, the material is driven from the bottom of the mixing tank 100 along the length direction of the cylinder 310 to the top of the mixing tank 100. At this time, the spraying machine body 410 is started, and the slurry is pressurized to the spray gun 4 through the connecting pipe 420. 30, and sprays the slurry into the mixing tank 100 through the atomizing nozzle 440. Since the mixing tank 100 is in a high-pressure state during spraying, the air pressure in the mixing tank 100 is discharged through the one-way pressure relief valve 450, and then the material moves from the second flow channel to the separation plate 360. The material moves along the guide groove 361 on the separation plate 360 ​​to the edge of the separation plate 360 ​​and is thrown into the mixing tank 100 by the separation plate 360. The material falls onto the annular screen 380 during the falling process. The setting of the annular screen 380 can play a role in buffering the material and reduce the speed of the material when it falls. When the material spraying is completed, the mixing tank 100 is moved to a designated position for unloading by the moving mechanism 200.

[0047] Embodiment 2:

[0048] The present invention provides a mixed spraying method, which comprises the following steps:

[0049] S1: Before loading, insert the baffle 140 between the mixing tank 100 and the discharge pipe 130;

[0050] S2: Add the material into the mixing tank 100 through the feed port 110. At this time, the material gathers at the bottom of the mixing tank 100 under the action of gravity;

[0051] S3: Start the power assembly 340 to drive the auger 320 to rotate. When the auger 320 rotates, the material enters the auger 320 through the first circulation channel. The material is transported by the auger 320 and flows out to the separation plate 360 ​​through the second circulation channel. When the separation plate 360 ​​rotates, it throws the material around the box;

[0052] S4: starting the spraying machine body 410, and the spraying machine body 410 sprays slurry into the mixing tank 100;

[0053] S5: After the slurry spraying is completed, the baffle 140 and the discharge switch 150 are opened to allow the material to flow out from the discharge pipe 130 .

[0054] The implementation principle of a mixed spraying method in the embodiment of the present application is:

[0055] The mixing tank 100 is moved to a designated position by the moving mechanism 200, and the baffle 140 is placed between the mixing tank 100 and the discharge pipe 130 to prevent the material from leaking out of the mixing tank 100. Then, the material is added to the mixing tank 100 through the feed port 110. After the material enters the mixing tank 100, the material is gathered above the baffle 140 through the first flow channel and contacts the auger 320. Then, the auger 320 is driven to rotate by the driving motor 341. When the auger 320 rotates, the material is driven from the bottom of the mixing tank 100 along the length direction of the cylinder 310 to the top of the mixing tank 100. At this time, the spraying machine body 410 is started, and the slurry is pressurized to the spray gun 4 through the connecting pipe 420. 30, and sprays the slurry into the mixing tank 100 through the atomizing nozzle 440. Since the mixing tank 100 is in a high-pressure state during spraying, the air pressure in the mixing tank 100 is discharged through the one-way pressure relief valve 450, and then the material moves from the second flow channel to the separation plate 360. The material moves along the guide groove 361 on the separation plate 360 ​​to the edge of the separation plate 360 ​​and is thrown into the mixing tank 100 by the separation plate 360. The material falls onto the annular screen 380 during the falling process. The setting of the annular screen 380 can play a role in buffering the material and reduce the speed of the material when it falls. When the material spraying is completed, the mixing tank 100 is moved to a designated position for unloading by the moving mechanism 200.

[0056] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mixing spraying device, characterized in that: It comprises a moving mechanism (200), a stirring tank (100), a stirring mechanism (300) and a spraying mechanism (400); The stirring tank (100) is arranged on the moving mechanism (200), the spraying mechanism (400) is used to spray slurry into the stirring tank (100), and a feed port (110) is provided on the stirring tank (100); The stirring mechanism (300) comprises a cylinder (310), an auger (320), a support rod (330) and a power assembly (340); the cylinder (310) is vertically arranged inside the stirring tank (100); one end of the support rod (330) is connected to the outer peripheral surface of the cylinder (310); the other end of the support rod (330) is connected to the inner peripheral surface of the stirring tank (100); the auger (320) is rotatably connected inside the cylinder (310); and the power assembly (340) is used to drive the auger (320) to rotate; A first circulation channel is provided between the bottom of the cylinder (310) and the bottom of the stirring tank (100), and a second circulation channel is provided between the top of the cylinder (310) and the top of the stirring tank (100).

2. A mixing spraying device according to claim 1, characterized in that: The stirring mechanism (300) further comprises a rotating ring (350), a separation plate (360) and a power rod (370); the rotating ring (350) is rotatably connected to the cylinder (310); the separation plate (360) is fixedly connected to the outer peripheral surface of the rotating ring (350); one end of the power rod (370) is fixedly connected to the separation plate (360); and the other end of the power rod (370) is transmission-connected to the power assembly (340).

3. A mixing spraying device according to claim 2, characterized in that: The separation plate (360) is provided with a plurality of guide grooves (361), and the direction of the guide grooves (361) points from the circumferential direction of the separation plate (360) to the center direction of the separation plate (360).

4. A mixing spraying device according to claim 1, characterized in that: The stirring mechanism (300) further comprises an annular screen (380), the inner circumferential surface of the annular screen (380) being fixedly connected to the cylinder (310), and the outer circumferential surface of the annular screen (380) being fixedly connected to the stirring tank (100).

5. A mixing spraying device according to claim 4, characterized in that: The end of the annular screen (380) close to the stirring tank (100) is V-shaped, and the height of the end of the annular screen (380) close to the stirring tank (100) is lower than the height of the end close to the cylinder (310).

6. A mixing spraying device according to claim 5, characterized in that: A discharge port (120) is provided at the bottom of the stirring tank (100), a discharge pipe (130) is connected to the bottom of the stirring tank (100), the discharge pipe (130) is in communication with the discharge port (120), a baffle (140) is movably connected between the stirring tank (100) and the discharge pipe (130), and a discharge switch (150) is provided inside the discharge pipe (130).

7. A mixing spraying device according to claim 6, characterized in that: The moving mechanism (200) comprises a moving wheel (210), a bottom plate (220), a bracket (230) and a connecting column (240); the moving wheel (210) is rotatably connected to the bottom plate (220); the bracket (230) is arranged on the bottom plate (220); one end of the connecting column (240) is fixedly connected to the bracket (230); and the stirring tank (100) is fixedly connected to the other end of the connecting column (240).

8. A mixing spraying device according to claim 7, characterized in that: The spraying mechanism (400) comprises a spraying machine body (410), a connecting pipe (420), a spray gun (430) and an atomizing nozzle (440); the spray gun (430) is threadedly connected to the top of the mixing tank (100) and passes through the mixing tank (100); one end of the connecting pipe (420) is connected to the spraying machine body (410), and the other end of the connecting pipe (420) is connected to the spray gun (430); the atomizing nozzle (440) is arranged on one end of the spray gun (430) away from the connecting pipe (420), and the atomizing nozzle (440) is located inside the mixing tank (100).

9. A mixing spraying device according to claim 8, characterized in that: A one-way pressure relief valve (450) is also provided on the top of the mixing tank (100), a pressure relief pipe (460) is connected to the one-way pressure relief valve (450), and one end of the pressure relief pipe (460) away from the one-way pressure relief valve (450) is connected to the shotcrete machine body (410).

10. A spraying method using a hybrid spraying device as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1: Before loading, insert the baffle (140) between the mixing tank (100) and the discharge pipe (130); S2: Adding materials into the mixing tank (100) through the feed port (110), and the materials are gathered at the bottom of the mixing tank (100) under the action of gravity; S3: starting the power assembly (340) to drive the auger (320) to rotate. When the auger (320) rotates, the material enters the auger (320) through the first circulation channel. The material is transported by the auger (320) and flows out through the second circulation channel to the separation plate (360). When the separation plate (360) rotates, it sprinkles the material around the box. S4: starting the spraying machine body (410), so that the spraying machine body (410) sprays slurry into the interior of the mixing tank (100); S5: After the slurry spraying is completed, the baffle (140) and the discharge switch (150) are opened to allow the material to flow out from the discharge pipe (130).

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