A device for measuring the material level of the powder silo in a mixing station

Abstract

The present invention relates to the technical field of powder silo level measurement, and specifically discloses a powder silo level measurement device for a mixing station, including a silo; a motor is installed on the top surface of the silo; a rotating shaft extending into the interior of the silo is fixedly connected to the output end of the motor; a connecting plate is fixedly connected to the outer side wall of the rotating shaft; a pushing plate is fixedly connected to the connecting plate; a heavy hammer type level gauge is arranged on the top surface of the silo; the heavy hammer of the heavy hammer type level gauge can enter the interior of the silo from the top end of the silo; a wall cleaning mechanism is arranged on the rotating shaft; the wall cleaning structure can scrape the materials adhered to the inner side wall of the silo; by scraping the materials adhered to the inner side wall of the silo through the wall cleaning mechanism, the material surface is kept flat, the possibility of uneven distribution of materials in the silo caused by the adhesion of materials to the inner side wall of the silo is reduced, and the accuracy of level measurement is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring the material level in a powder bin, and particularly to a device for measuring the material level in a powder bin of a mixing station. Background Art

[0002] In the process of preparing concrete, a variety of raw materials are mixed in a certain proportion. Most of the powder, which is one of the raw materials for concrete preparation, is stored in a powder bin. During the storage of the powder, since the storage capacity of the powder bin is limited, in order to avoid the powder stored in the powder bin exceeding the specified amount, it is necessary to measure the material level in the powder bin.

[0003] In the prior art, the material level in the powder bin is mostly measured by a heavy hammer type powder level gauge. However, during the storage of the powder, the powder is prone to adhere to the inner side wall of the bin due to the influence of the storage environment, resulting in an uneven inclined distribution of the remaining powder in the bin when the powder is conveyed out of the bin, thus affecting the measurement result of the heavy hammer type level gauge for the material level. Summary of the Invention

[0004] The present application provides a device for measuring the material level in a powder bin of a mixing station, which has the function of scraping the material on the inner side wall of the bin and stirring the material in the bin to keep the surface of the material flat and improve the accuracy of material level measurement.

[0005] The device for measuring the material level in a powder bin of a mixing station provided by the present application adopts the following technical solutions:

[0006] A device for measuring the material level in a powder bin of a mixing station includes a bin; a motor is installed on the top surface of the bin; the output end of the motor is fixedly connected with a rotating shaft extending into the interior of the bin; a connecting plate is fixedly connected to the outer side wall of the rotating shaft; a pushing plate is fixedly connected to the connecting plate; a heavy hammer type level gauge is arranged on the top surface of the bin; the heavy hammer of the heavy hammer type level gauge can enter the interior of the bin from the top end of the bin; a wall cleaning mechanism is arranged on the rotating shaft; the wall cleaning structure can scrape the material adhering to the inner side wall of the bin.

[0007] By adopting the above technical solutions, when measuring the material level in the bin, the motor is started to drive the rotating shaft to rotate. During the rotation of the rotating shaft, the connecting plate and the pushing plate are driven to rotate, the material in the bin is stirred by the connecting plate and the pushing plate, and the material adhering to the inner side wall of the bin is scraped off by the wall cleaning mechanism arranged on the rotating shaft. Furthermore, the surface of the sealed material in the bin remains flat during measurement, reducing the possibility of uneven distribution of the material in the bin caused by the adhesion of the material to the inner side wall of the bin, thereby improving the accuracy of material level measurement; after the material is stirred, the material level in the bin is measured by the heavy hammer type level gauge, enabling the staff to judge whether it is necessary to put materials into the bin according to the measurement result.

[0008] Preferably, the wall cleaning mechanism includes a first scraper and a second scraper; the first scraper is fixedly connected to the end of the connecting plate away from the rotating shaft, the side wall of the first scraper away from the connecting plate is slidably matched with the inner side wall of the silo, and a scraping slope is provided on the side wall of the first scraper; a fixing rod is fixedly connected to the outer side wall of the rotating shaft; the second scraper is fixedly connected to the end of the fixing rod away from the rotating shaft, and the side wall of the second scraper away from the fixing rod is slidably matched with the inner side wall of the silo.

[0009] By adopting the above technical solution, during the rotation of the rotating shaft, the connecting plate and the fixing rod are driven to rotate. The material adhering to the inner side wall of the silo is scraped by the first scraper fixedly connected to the connecting plate and the second scraper connected to the fixing rod, so that the material adhering to the inner side wall of the silo falls into the silo, reducing the possibility of uneven distribution of the material in the silo, and thus improving the accuracy of the material level measurement.

[0010] Preferably, a collection box is fixedly connected to the outer side wall of the silo; a filter screen that divides the internal space of the collection box into a first cavity and a second cavity is fixedly connected to the inner side wall of the collection box; an air extraction pump is fixedly connected to the top surface of the silo; an air inlet pipe is fixedly connected to the input end of the air extraction pump, and an air outlet pipe is fixedly connected to the output end of the air extraction pump; the end of the air inlet pipe away from the air extraction pump is communicated with the inside of the silo; the end of the air outlet pipe away from the air extraction pump is communicated with the inside of the first cavity; an exhaust pipe is fixedly connected to the outer side wall of the collection box; the exhaust pipe is communicated with the inside of the second cavity.

[0011] By adopting the above technical solution, when replenishing the material in the silo, the material put into the silo will generate a large amount of material dust in the silo, and a heavy dust environment will be formed in the silo. The dust in the silo is easily scattered and adhered to the suspension rope of the heavy hammer type level gauge, causing great wear to the suspension rope during the long-term movement of driving the heavy hammer. By starting the air extraction pump, the material dust generated in the silo is transported to the collection box through the air inlet pipe and the air outlet pipe. The material dust gas is filtered by the filter screen arranged in the collection box, so that the dust material is collected in the collection box, thereby reducing the content of material dust in the silo.

[0012] Preferably, a lead screw is rotatably connected to the inner side wall of the second cavity; a sliding plate that is in threaded transmission cooperation with the lead screw is sleeved on the outer side wall of the lead screw; the sliding plate is slidably matched with the inner side wall of the second cavity, and a brush hair in contact with the filter screen is arranged on the side wall of the sliding plate close to the filter screen; the top end of the lead screw penetrates through the top side wall of the collection box and extends outside the collection box, and a transmission member that can drive the lead screw to rotate by the rotating shaft is arranged at the end of the lead screw extending outside the collection box.

[0013] By adopting the above technical solution, when the motor drives the rotating shaft to rotate, the transmission part drives the lead screw to rotate. During the rotation of the lead screw, the slide plate is driven to slide along the lead screw, so that the brush on the side wall of the slide plate cleans the filter screen, prompting the dust adhered to the filter screen to fall from the surface of the filter screen, making the mesh holes of the filter screen not easily blocked by dust. By driving the rotating shaft to rotate forward and backward by the motor, the slide plate slides back and forth along the lead screw, so that the brush performs reciprocating cleaning work on the filter screen.

[0014] Preferably, the transmission part includes a first belt pulley and a second belt pulley; the first belt pulley is fixedly connected to the side wall of the rotating shaft extending outside the material bin; the second belt pulley is fixedly connected to the outer end of the lead screw, and a belt is sleeved outside the second belt pulley; the end of the belt away from the second belt pulley is sleeved on the first belt pulley, and the belt links the first belt pulley and the second belt pulley.

[0015] By adopting the above technical solution, during the rotation of the rotating shaft, the belt pulley is driven to rotate. The belt is sleeved outside the first belt pulley and the second belt pulley, and the belt links the first belt pulley and the second belt pulley, so that when the rotating shaft rotates, the lead screw is driven to rotate.

[0016] Preferably, a ventilation pipe is fixedly connected to the inner side wall of the first cavity; a dust removal cloth bag communicated with the inside of the ventilation pipe is fixedly connected to the outer side wall of the ventilation pipe; a blower is arranged on the top surface of the collection box; an air outlet pipe is fixedly connected to the output end of the blower; the end of the air outlet pipe away from the blower is communicated with the inside of the ventilation pipe.

[0017] By adopting the above technical solution, when the dust material is conveyed into the collection box, the dust material entering the collection box is filtered by the dust removal cloth bag arranged in the collection box, and the dust material is intercepted on the outer surface of the dust removal cloth bag by the dust removal cloth bag; when more powder adheres to the dust removal cloth bag, the blower is started, and the blower blows air into the inside of the ventilation pipe through the air outlet pipe, so that the dust removal cloth bag bulges, prompting the dust adhered to the outer surface of the dust removal cloth bag to fall into the collection box.

[0018] Preferably, a cavity is arranged inside the slide plate; a jet nozzle communicated with the inside of the cavity is fixedly connected to the side wall of the slide plate close to the filter screen; the brush is surrounded outside the jet nozzle; a connecting pipe communicated with the inside of the ventilation pipe is fixedly connected to the side wall of the ventilation pipe; the end of the connecting pipe away from the ventilation pipe penetrates through the filter screen and extends into the second cavity, and an air delivery pipe is fixedly connected to the end of the connecting pipe extending into the second cavity; the end of the air delivery pipe away from the connecting pipe is communicated with the inside of the cavity.

[0019] By adopting the above technical solution, when the blower blows air into the ventilation pipe, the gas entering the ventilation pipe enters the cavity through the connecting pipe and the air delivery pipe, and the gas entering the cavity finally sprays out through the jet nozzle. When the jet nozzle sprays out the gas, the sprayed gas has a blowing and cleaning effect on the filter screen, prompting the dust on the filter screen to shake off, reducing the possibility of the mesh holes being blocked, and the gas sprayed out by the jet nozzle also has a blowing effect on the bristles, making it difficult for a large amount of dust to adhere to the bristles.

[0020] Preferably, a waste discharge pipe communicating with the inside of the first cavity is fixedly connected to the inner side wall of the bottom end of the first cavity; a first valve is arranged on the waste discharge pipe; a pusher is arranged inside the first cavity to push the powder material into the waste discharge pipe.

[0021] By adopting the above technical solution, when there is a large amount of powder material accumulated in the collection box, the first valve on the waste discharge pipe is opened, and the pusher is used to prompt the powder material falling on the inner side wall of the bottom end of the collection box to be discharged from the collection box through the waste discharge pipe for treatment.

[0022] Preferably, the pusher includes an electric push rod; the electric push rod is fixedly connected to the outer side wall of the collection box, the output end of the electric push rod extends into the inside of the first cavity, and a straight plate slidably matched with the inner side wall of the bottom end of the first cavity is fixedly connected to the output end of the electric push rod.

[0023] By adopting the above technical solution, the electric push rod is started to drive the straight plate to slide along the inner side wall of the bottom end of the collection box, and the powder material falling on the inner side wall of the bottom end of the collection box is pushed through the waste discharge pipe to be discharged from the collection box.

[0024] Preferably, a feed pipe communicating with the inside of the silo is provided on the top surface of the silo, and an end cover is rotatably connected to the top surface of the feed pipe; a discharge pipe communicating with the inside of the silo is fixedly connected to the bottom surface of the silo; a second valve is arranged on the discharge pipe.

[0025] By adopting the above technical solution, when feeding materials, the rotating end cover is opened to open the feed pipe, and the materials are put into the silo through the fine material pipe for storage; when taking out the materials, the second valve on the discharge pipe is opened to enable the materials to be discharged out of the silo.

[0026] In summary, the present application has the following beneficial effects:

[0027] 1. By starting the motor to drive the rotating shaft to rotate, the connecting plate and the fixed rod are driven to rotate during the rotation of the rotating shaft, and the push plate, the first scraper and the second scraper are driven to rotate in the silo during the rotation of the connecting plate and the fixed rod. Through the cooperative work of the push plate, the first scraper and the second scraper, the material level surface of the materials in the silo is kept flat, reducing the possibility that the material level is uneven due to adhesion to the side wall of the silo, improving the accuracy of the material level measurement, and after the materials are fully stirred, the heavy hammer type material level meter arranged at the top of the silo is used to measure the material level in the silo;

[0028] 2. When feeding materials into the silo, the material dust generated in the silo is transported to the collection box through the intake pipe and the outlet pipe by starting the air extraction pump. The material dust gas is filtered by the dust removal cloth bag 5 and the filter screen arranged in the collection box, so that the dust materials are adhered to the dust removal cloth bag and the filter screen, thereby reducing the content of material dust in the silo and making it difficult for the material dust in the silo to affect the heavy hammer type material meter;

[0029] 3. During the rotation of the rotating shaft, the lead screw rotates along with the rotating shaft through the cooperation of the first belt pulley, the second belt pulley and the belt. During the rotation of the lead screw, the brush on the side wall of the sliding plate cleans the filter screen, prompting the dust adhered to the filter screen to fall into the collection box and reducing the possibility of the mesh holes of the filter screen being blocked. Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of a material level measuring device for the powder silo of a mixing plant;

[0031] Figure 2 is a schematic structural diagram of the internal structures of the silo and the collection box in the present application;

[0032] Figure 3 is a schematic structural diagram of the rotating shaft, the connecting plate, the pushing plate and the wall cleaning mechanism in the present application;

[0033] Figure 4 is a schematic structural diagram of the filter screen, the sliding plate and the transmission parts in the present application;

[0034] Figure 5 is a schematic structural diagram of the sliding plate, the air jet nozzle and the brush in the present application;

[0035] Figure 6 is a schematic structural diagram of the collection box, the electric push rod and the waste discharge pipe in the present application.

[0036] Reference numerals: 1, silo; 11, feed pipe; 12, end cover; 13, discharge pipe; 131, second valve; 2, motor; 21, rotating shaft; 22, connecting plate; 23, push plate; 3, heavy hammer type level gauge; 4, wall cleaning mechanism; 41, first scraper; 411, scraping slope; 42, second scraper; 43, fixed rod; 5, collection box; 51, first cavity; 511, waste discharge pipe; 512, first valve; 52, second cavity; 53, filter screen; 54, exhaust pipe; 55, lead screw; 56, slide plate; 561, brush hair; 562, cavity; 563, air jet nozzle; 57, ventilation pipe; 571, connecting pipe; 572, air delivery pipe; 58, dust removal cloth bag; 59, blower; 591, air outlet pipe; 6, air extraction pump; 61, intake pipe; 62, outlet pipe; 7, transmission part; 71, first pulley; 72, second pulley; 73, belt; 8, pushing part; 81, electric push rod; 82, straight plate. Detailed implementation mode

[0037] The present invention will be further described in detail below with reference to the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper", "lower", "bottom surface" and "top surface" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0038] The present invention discloses a device for measuring the material level in a powder silo of a mixing station, as Figure 1 and Figure 2 shown, which includes a silo 1, a heavy hammer type level gauge 3, a collection box 5 and an air extraction pump 6; an inlet pipe 11 communicating with the inside of the silo 1 is arranged on the top surface of the silo 1, and an end cover 12 is rotatably connected to the top surface of the inlet pipe 11; a discharge pipe 13 communicating with the inside of the silo 1 is fixedly connected to the bottom surface of the silo 1; a second valve 131 is arranged on the discharge pipe 13; the heavy hammer type level gauge 3 is arranged on the top surface of the silo 1, and the heavy hammer of the heavy hammer type level gauge 3 can enter the inside of the silo 1 from the top end of the silo 1. The collection box 5 is fixedly connected to the outer side wall of the silo 1, and a filter screen 53 is fixedly connected to the inner side wall of the collection box 5; the air extraction pump 6 is fixedly connected to the top surface of the silo 1, an intake pipe 61 is fixedly connected to the input end of the air extraction pump 6, and an outlet pipe 62 is fixedly connected to the output end of the air extraction pump 6; the end of the intake pipe 61 away from the air extraction pump 6 is fixedly connected to the top surface of the silo 1 and communicates with the inside of the silo 1, and the end of the outlet pipe 62 away from the air extraction pump 6 is fixedly connected to the top surface of the collection box 5 and communicates with the inside of the collection box 5.

[0039] Close the second valve 131 on the discharge pipe 13, rotate the end cover 12 to open the feed pipe 11, and put materials into the inside of the bin 1 through the feed pipe 11. When the materials are put into the bin 1, a large amount of material dust will be generated in the bin 1. Start the air extraction pump 6 to transport the material dust generated in the bin 1 to the collection box 5 through the intake pipe 61 and the exhaust pipe 62. The filter screen 53 provided in the collection box 5 filters the material dust gas to reduce the content of material dust in the bin 1, thereby reducing the influence of the dust content on the heavy hammer type level gauge 3. When measuring the level, lower the heavy hammer through the heavy hammer type level gauge 3 to measure the level.

[0040] As Figure 1 and Figure 2 shown, the filter screen 53 divides the internal space of the collection box 5 into a first cavity 51 and a second cavity 52; the end of the exhaust pipe 62 far from the air extraction pump 6 is communicated with the inner side wall of the first cavity 51, and an exhaust pipe 54 is fixedly connected to the outer side wall of the collection box 5, and the exhaust pipe 54 is communicated with the inner side wall of the second cavity 52.

[0041] The dust material enters the first cavity 51 of the collection box 5 after being discharged from the exhaust pipe 62. During the flow of the dust material in the first cavity 51, the filter screen 53 filters the dust, and the filtered gas is discharged out of the collection box 5 through the exhaust pipe 54, while the powder is blocked by the filter screen 53 and remains in the first cavity 51.

[0042] As Figure 2 and Figure 3 shown, a motor 2 is installed on the top surface of the bin 1; the motor 2 is a brake motor 2, and the output end of the motor 2 is fixedly connected with a rotating shaft 21 extending into the inside of the bin 1; a pair of connecting plates 22 are fixedly connected to the outer side wall of the rotating shaft 21; a plurality of push plates 23 arranged in the vertical direction are fixedly connected to the connecting plates 22, and a pair of wall cleaning mechanisms 4 for scraping the materials adhered to the inner side wall of the bin 1 are also arranged on the rotating shaft 21.

[0043] Before measuring the level, start the motor 2 to drive the rotating shaft 21 to rotate. During the rotation of the rotating shaft 21, drive the cleaning mechanism to scrape the inner side wall of the bin 1, so that the materials are not likely to cause the material surface to be uneven due to adhesion to the inner side wall of the bin 1, and stir the materials through the connecting plates 22 and the push plates 23 to promote the movement of the materials, so that the material surface is kept neat and the measurement accuracy is improved.

[0044] As Figure 2 and Figure 3As shown in the figure, the wall cleaning mechanism 4 includes a first scraper 41, a fixed rod 43 and a second scraper 42. The first scraper 41 is fixedly connected to the end of the connecting plate 22 away from the rotating shaft 21. The side wall of the first scraper 41 away from the connecting plate 22 is in sliding fit with the inner side wall of the bin 1. A scraping inclined surface 411 is provided on the side wall of the first scraper 41. The fixed rod 43 is fixedly connected to the outer side wall of the rotating shaft 21. The second scraper 42 is fixedly connected to the end of the fixed rod 43 away from the rotating shaft 21. The side wall of the second scraper 42 away from the fixed rod 43 is in sliding fit with the inner side wall of the bin 1.

[0045] During the rotation of the rotating shaft 21, the connecting plate 22 and the fixed rod 43 are driven to rotate. The material adhered to the inner side wall of the bin 1 is scraped by the first scraper 41 connected to the connecting plate 22 and the second scraper 42 connected to the fixed rod 43, so that the material adhered to the inner side wall of the bin 1 falls into the bin 1, reducing the possibility of uneven distribution of the material in the bin 1. The setting of the scraping inclined surface 411 facilitates the scraping of the material by the first scraper 41.

[0046] As Figure 2 and Figure 4 As shown in the figure, a lead screw 55 is rotatably connected to the inner side wall of the second cavity 52. A slide plate 56 that is in threaded driving fit with the lead screw 55 is sleeved on the outer side wall of the lead screw 55. The slide plate 56 is in sliding fit with the inner side wall of the second cavity 52. A brush 561 that contacts the filter screen 53 is provided on the side wall of the slide plate 56 close to the filter screen 53. The top end of the lead screw 55 penetrates through the top side wall of the collection box 5 and extends outside the collection box 5. A transmission member 7 that can drive the lead screw 55 to rotate by the rotating shaft 21 is provided at the top end of the lead screw 55. The transmission member 7 includes a first belt pulley 71, a second belt pulley 72 and a belt 73 that links the first belt pulley 71 and the second belt pulley 72. The first belt pulley 71 is fixedly connected to the side wall of the rotating shaft 21 extending outside the bin 1. The second belt pulley 72 is fixedly connected to the outer end of the lead screw 55. The belt 73 is sleeved outside the first belt pulley 71 and the second belt pulley 72.

[0047] During the rotation of the rotating shaft 21, through the cooperative work of the first belt pulley 71, the second belt pulley 72 and the belt 73, the lead screw 55 rotates along with the rotating shaft 21. During the rotation of the lead screw 55, the brush �61 on the side wall of the slide plate 56 cleans the filter screen 53, prompting the dust adhered to the filter screen 53 to fall, reducing the possibility of dust clogging the mesh holes. By rotating the rotating shaft 21 forward and backward, the brush 561 reciprocally cleans the filter screen 53.

[0048] As Figure 2 and Figure 4As shown, a ventilation pipe 57 is fixedly connected to the inner wall of the first cavity 51; a plurality of dust removal bags 58 connected to the interior of the ventilation pipe 57 are fixedly connected to the outer wall of the ventilation pipe 57; a blower 59 is provided on the top surface of the collecting box 5; an air outlet pipe 591 is fixedly connected to the output end of the blower 59; the end of the air outlet pipe 591 away from the blower 59 passes through the top side wall of the collecting box 5 and is fixedly connected to the side wall of the ventilation pipe 57. The air outlet pipe 591 is connected to the interior of the ventilation pipe 57.

[0049] The dust bag 58 is provided to filter the dust material entering the collection box 5 so that the dust material is intercepted on the outer surface of the dust bag 58; when a lot of powder adheres to the dust bag 58, the blower 59 is started to blow air into the ventilation pipe 57, so that the dust bag 58 is inflated, and the dust adhered to the outer surface of the dust bag 58 is shaken off into the collection box 5.

[0050] like Figure 4 and Figure 5 As shown, a cavity 562 is provided inside the skateboard 56; a plurality of air nozzles 563 connected to the interior of the cavity 562 are fixedly connected to the side wall of the skateboard 56 close to the filter screen 53; bristles 561 surround the outside of the air nozzles 563; a connecting pipe 571 connected to the interior of the ventilation pipe 57 is fixedly connected to the side wall of the ventilation pipe 57; the end of the connecting pipe 571 away from the ventilation pipe 57 passes through the filter screen 53 and extends into the second cavity 52, and the end of the connecting pipe 571 extending into the second cavity 52 is fixedly connected to an air supply pipe 572; the end of the air supply pipe 572 away from the connecting pipe 571 is fixedly connected to the top of the skateboard 56, and the air supply pipe 572 is connected to the interior of the cavity 562.

[0051] The gas input into the ventilation pipe 57 enters the cavity 562 after passing through the connecting pipe 571 and the gas supply pipe 572. The gas entering the cavity 562 is finally ejected through the air nozzle 563. When the air nozzle 563 ejects the gas, the ejected gas has a blowing and cleaning effect on the filter 53, prompting the dust on the filter 53 to fall off, reducing the possibility of the mesh being blocked, and the gas ejected from the air nozzle 563 also has a blowing effect on the bristles 561, making it difficult for a lot of dust to adhere to the bristles 561.

[0052] like Figure 2 and Figure 6 As shown, a waste pipe 511 connected to the interior of the first cavity 51 is fixedly connected to the inner wall of the bottom end of the first cavity 51; a first valve 512 is provided on the waste pipe 511; a pushing piece 8 is provided inside the first cavity 51 for pushing the powder into the waste pipe 511; the pushing piece 8 includes an electric push rod 81 and a straight plate 82; the electric push rod 81 is fixedly connected to the outer wall of the collecting box 5, and the output end of the electric push rod 81 extends into the interior of the first cavity 51; the straight plate 82 is fixedly connected to the output end of the electric push rod 81, and the straight plate 82 slides with the inner wall of the bottom end of the first cavity 51.

[0053] When there is a large amount of dust accumulated in the collection box 5, open the first valve 512 and then start the electric push rod 81, so that the straight plate 82 pushes the dust on the inner side wall of the bottom end of the collection box 5 to be discharged from the collection box 5 through the waste discharge pipe 511, which facilitates the collection box 5 to collect subsequent dust.

[0054] Working principle: When feeding materials into the silo 1, open the rotating end cover 12 of the feed pipe 11, and put the materials into the silo 1 through the refined material pipe for storage. The materials put into the silo 1 will form a heavy dust environment in the silo 1, which is likely to affect the measurement of the material level in the silo 1. By starting the air extraction pump 6, the material dust generated in the silo 1 is transported to the collection box 5 through the air inlet pipe 61 and the air outlet pipe 62. The dust removal cloth bag 58 and the filter screen 53 arranged in the collection box 5 filter the material dust gas, so that the dust materials are adhered to the dust removal cloth bag 58 and the filter screen 53, thereby reducing the content of material dust in the silo 1.

[0055] When it is necessary to measure the material level in the silo 1, start the motor 2 to drive the rotating shaft 21 to rotate. During the rotation of the rotating shaft 21, the connecting plate 22 and the fixed rod 43 are driven to rotate. During the rotation of the connecting plate 22 and the fixed rod 43, the push plate 23, the first scraper 41 and the second scraper 42 are driven to rotate in the silo 1. Through the cooperative work of the push plate 23, the first scraper 41 and the second scraper 42, the material level surface of the materials in the silo 1 is kept flat, reducing the possibility that the material level is uneven due to adhesion to the side wall of the silo 1, and improving the accuracy of material level measurement. After the materials are fully stirred, the heavy hammer type level gauge 3 arranged at the top of the silo 1 is used to measure the material level in the silo 1.

[0056] During the rotation of the rotating shaft 21, through the cooperative work of the first pulley 71, the second pulley 72 and the belt 73, the lead screw 55 rotates along with the rotating shaft 21. During the rotation of the lead screw 55, the brush bristles 561 on the side wall of the sliding plate 56 clean the filter screen 53, so that the dust adhered to the filter screen 53 falls into the collection box 5. When the brush bristles 561 clean the filter screen 53, start the blower 59 to blow air into the ventilation pipe 57 from the air outlet pipe 591. Part of the gas entering the ventilation pipe 57 enters the interior of the dust removal cloth bag 58, causing the dust removal cloth bag 58 to bulge, so that the dust on the surface of the dust removal cloth bag 58 falls off. The other part of the gas enters the cavity 562 through the connecting pipe 571 and the air delivery pipe 572, and the gas entering the cavity 562 is finally ejected through the air jet nozzle 563 to blow the filter screen 53, so that the dust on the filter screen 53 falls off.

[0057] When there is a large amount of dust falling from the dust removal cloth bag 58 and the filter screen 53 accumulated in the collection box 5, open the first valve 512 and start the electric push rod 81, so that the straight plate 82 pushes the dust on the inner side wall of the bottom end of the collection box 5 to be discharged from the collection box 5 through the waste discharge pipe 511.

[0058] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A material level measuring device for the powder silo of a mixing plant, characterized in that: It includes a silo (1); a motor (2) is installed on the top surface of the silo (1); the output end of the motor (2) is fixedly connected to a rotating shaft (21) extending into the interior of the silo (1); a connecting plate (22) is fixedly connected to the outer side wall of the rotating shaft (21); a pushing plate (23) is fixedly connected to the connecting plate (22); a heavy hammer type level gauge (3) is arranged on the top surface of the silo (1); the heavy hammer of the heavy hammer type level gauge (3) can enter the interior of the silo (1) from the top end of the silo (1); a wall cleaning mechanism (4) is arranged on the rotating shaft (21); the wall cleaning mechanism (4) can scrape the materials adhered to the inner side wall of the silo (1). The wall cleaning mechanism (4) includes a first scraper (41) and a second scraper (42); the first scraper (41) is fixedly connected to the end of the connecting plate (22) far from the rotating shaft (21), the side wall of the first scraper (41) far from the connecting plate (22) is in sliding fit with the inner side wall of the silo (1), and a scraping inclined surface (411) is arranged on the side wall of the first scraper (41); a fixing rod (43) is fixedly connected to the outer side wall of the rotating shaft (21); the second scraper (42) is fixedly connected to the end of the fixing rod (43) far from the rotating shaft (21), and the side wall of the second scraper (42) far from the fixing rod (43) is in sliding fit with the inner side wall of the silo (1). A collection box (5) is fixedly connected to the outer side wall of the silo (1); a filter screen (53) that divides the inner space of the collection box (5) into a first cavity (51) and a second cavity (52) is fixedly connected to the inner side wall of the collection box (5); an air extraction pump (6) is fixedly connected to the top surface of the silo (1); an air inlet pipe (61) is fixedly connected to the input end of the air extraction pump (6), and an air outlet pipe (62) is fixedly connected to the output end of the air extraction pump (6); the end of the air inlet pipe (61) far from the air extraction pump (6) is communicated with the interior of the silo (1); the end of the air outlet pipe (62) far from the air extraction pump (6) is communicated with the interior of the first cavity (51); an exhaust pipe (54) is fixedly connected to the outer side wall of the collection box (5); the exhaust pipe (54) is communicated with the interior of the second cavity (52). A lead screw (55) is rotatably connected to the inner side wall of the second cavity (52); a slide plate (56) that is in threaded transmission fit with the lead screw (55) is sleeved on the outer side wall of the lead screw (55); the slide plate (56) is in sliding fit with the inner side wall of the second cavity (52), and brush hairs (561) that contact the filter screen (53) are arranged on the side wall of the slide plate (56) close to the filter screen (53); the top end of the lead screw (55) penetrates through the top side wall of the collection box (5) and extends outside the collection box (5), and a transmission member (7) that can drive the lead screw (55) to rotate by the rotating shaft (21) is arranged at the end of the lead screw (55) extending outside the collection box (5). On the inner side wall of the first cavity (51), a ventilation pipe (57) is fixedly connected; on the outer side wall of the ventilation pipe (57), a dust removal cloth bag (58) communicating with the inside of the ventilation pipe (57) is fixedly connected; on the top surface of the collection box (5), a blower (59) is provided; at the output end of the blower (59), an air outlet pipe (591) is fixedly connected; the end of the air outlet pipe (591) far from the blower (59) communicates with the inside of the ventilation pipe (57). Inside the sliding plate (56), a cavity (562) is provided; on the side wall of the sliding plate (56) close to the filter screen (53), an air jet nozzle (563) communicating with the inside of the cavity (562) is fixedly connected; the brush bristles (561) surround the outside of the air jet nozzle (563); on the side wall of the ventilation pipe (57), a connecting pipe (571) communicating with the inside of the ventilation pipe (57) is fixedly connected; the end of the connecting pipe (571) far from the ventilation pipe (57) penetrates through the filter screen (53) and extends into the second cavity (52), and the end of the connecting pipe (571) extending into the second cavity (52) is fixedly connected with an air delivery pipe (572); the end of the air delivery pipe (572) far from the connecting pipe (571) communicates with the inside of the cavity (562).

2. The material level measuring device for the powder silo of a mixing plant according to claim 1, characterized in that: The transmission member (7) includes a first pulley (71) and a second pulley (72); the first pulley (71) is fixedly connected to the side wall of the rotating shaft (21) extending outside the material bin (1); the second pulley (72) is fixedly connected to the outer end of the lead screw (55), and a belt (73) is sleeved outside the second pulley (72); the end of the belt (73) far from the second pulley (72) is sleeved on the first pulley (71), and the belt (73) links the first pulley (71) and the second pulley (72).

3. The material level measuring device for the powder silo of a mixing plant according to claim 1, wherein: On the bottom inner side wall of the first cavity (51), a waste discharge pipe (511) communicating with the inside of the first cavity (51) is fixedly connected; a first valve (512) is provided on the waste discharge pipe (511); inside the first cavity (51), a pusher member (8) capable of pushing the powder material into the waste discharge pipe (511) is provided.

4. The material level measuring device for the powder silo of a mixing plant according to claim 3, characterized in that: The pusher member (8) includes an electric push rod (81); the electric push rod (81) is fixedly connected to the outer side wall of the collection box (5), the output end of the electric push rod (81) extends into the inside of the first cavity (51), and the output end of the electric push rod (81) is fixedly connected with a straight plate (82) slidably matched with the bottom inner side wall of the first cavity (51).

5. The material level measuring device for the powder silo of a mixing plant according to claim 1, wherein: On the top surface of the material bin (1), a feed pipe (11) communicating with the inside of the material bin (1) is provided, and a cover (12) is rotatably connected to the top surface of the feed pipe (11); on the bottom surface of the material bin (1), a discharge pipe (13) communicating with the inside of the material bin (1) is fixedly connected; a second valve (131) is provided on the discharge pipe (13).

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