Concrete aggregate storage bin and aggregate storage bin ventilation system

Abstract

The invention discloses a concrete aggregate storage bin and an aggregate storage bin ventilation system.The aggregate storage bin comprises a bin body, the bin body comprises an inner bin body and an outer bin body, an annular ventilation channel is formed between the inner bin body and the outer bin body, ventilation holes are formed in the side wall of the inner bin body, a top cover is arranged at the top of the bin body, and the top cover comprises an inner top cover and an outer top cover; an air collecting cavity is formed between the inner top cover and the outer top cover and communicates with the annular ventilating duct, a central pipe is axially arranged in the inner bin body, and ventilating holes are formed in the pipe wall of the central pipe; a feeding pipe and an exhaust pipe are arranged on the top cover, the feeding pipe is communicated with the inner cavity of the bin body, the exhaust pipe is communicated with the air collecting cavity, and the upper end of the central pipe penetrates through the top cover to form an air inlet. The aggregate storage bin has the ventilation function, the water content of aggregate can be reduced in a ventilation mode, and the technical problems that due to the fact that the water content of existing gravel is high, materials in the storage bin adhere, mouseholes are formed or overall arching is caused, and the discharging interruption frequency is high are solved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete preparation, and in particular to a concrete aggregate silo and an aggregate silo ventilation system. Background Art

[0002] Aggregate silos are used in concrete mixing plants to store and feed raw materials such as sand and gravel. Existing aggregate silos generally have the following problems in design and operation, which directly affect concrete quality, production efficiency and environmental compliance. 1. The moisture content of sand and gravel fluctuates greatly, especially in the rainy season, when the moisture content of sand and gravel is high, causing the materials in the silo to stick together, forming "rat holes" or overall arching, and the frequency of unloading interruptions is high; 2. The top of the traditional aggregate silo is not completely closed, and dust overflows during sand and gravel loading and unloading. The dust concentration in the silo is high, far exceeding the national standard limit. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a concrete aggregate silo and an aggregate silo ventilation system.

[0004] The technical solution adopted by the present invention is:

[0005] A concrete aggregate silo comprises a silo body, wherein the silo body comprises an inner silo body and an outer silo body, an annular ventilation duct is formed between the inner silo body and the outer silo body, a plurality of first ventilation holes are opened on the side wall of the inner silo body, a top cover is provided on the top of the silo body, the top cover comprises an inner top cover and an outer top cover, the inner top cover is connected to the inner silo body, the outer top cover is connected to the outer silo body, an air collecting chamber is formed between the inner top cover and the outer top cover, the air collecting chamber is connected to the annular ventilation duct, a central tube is axially arranged inside the inner silo body, and a plurality of second ventilation holes are opened on the tube wall of the central tube.

[0006] A feed pipe and an exhaust pipe are provided on the top cover. The feed pipe passes through the outer top cover and the inner top cover to be connected with the inner cavity of the bin body. The exhaust pipe passes through the outer top cover to be connected with the air collecting cavity. The upper end of the central pipe passes through the inner top cover and the outer top cover to form an air inlet. The dry air enters the central pipe from the air inlet, is discharged through the second ventilation hole, radially passes through the aggregate, and then enters the annular ventilation duct and the air collecting cavity through the first ventilation hole, and is finally discharged from the aggregate bin through the exhaust pipe.

[0007] Furthermore, an upper support plate is provided between the warehouse body and the top cover, and the upper support plate is composed of an annular orifice plate and a strip bracket. The strip bracket is fixed inside the annular orifice plate, and a center tube mounting hole is provided in the center thereof; the annular orifice plate is used to connect the inner warehouse body and the inner top cover, and the air collecting chamber is connected with the annular ventilation duct through the holes on the annular orifice plate.

[0008] Furthermore, the strip-shaped support includes two vertical plates intersecting into a cross shape and a circular ring whose inner diameter matches the central tube.

[0009] Furthermore, the silo body includes a cylindrical section and a conical section, a lower support plate is provided between the cylindrical section and the conical section, the structure of the lower support plate is the same as that of the upper support plate, the ventilation duct of the cylindrical section and the ventilation duct of the conical section are connected through the orifice plate of the lower support plate, the bottom of the conical section is connected to the discharge pipe, the bottom of the ventilation duct of the conical section is closed by the discharge pipe, and the discharge pipe is closed by the discharge baffle.

[0010] Furthermore, the lower end of the central tube passes through the lower support plate and is connected to a hollow ball. The hollow ball is located at the center of the conical section, and its inner cavity is communicated with the tube cavity of the central tube. The side wall of the hollow ball is provided with a plurality of third ventilation holes.

[0011] Furthermore, the top cover is an elliptical head top cover.

[0012] Furthermore, there are two feed pipes, which are symmetrically arranged on both sides of the central pipe.

[0013] An aggregate silo ventilation system comprises any one of the above-mentioned concrete aggregate silos, and also comprises a dust collector, a heater and a ventilator, wherein the dust collector inlet is connected to an exhaust duct, the dust collector outlet is connected to the ventilator inlet, the ventilator outlet is connected to the heater inlet, and the heater outlet is connected to the air inlet of a central pipe through an air duct.

[0014] Beneficial effects of the present invention:

[0015] 1. By setting the silo and the top cover as a double-layer structure, setting a central tube in the center of the silo, and opening holes in the central tube and the inner layer of the silo, dry air can be introduced into the central tube, so that the dry air flows radially through the aggregate to take away the moisture in the aggregate, and then enters the silo ventilation duct and the air collecting cavity of the top cover, and finally is discharged from the exhaust pipe; thereby reducing the moisture content of the aggregate and solving the problem of high moisture content in the existing aggregate and high frequency of unloading interruption.

[0016] 2. By setting up a closed top cover, a dust collector and a ventilator, and starting the dust collector and the ventilator during feeding, the dust in the silo can be sucked into the dust collector by the ventilator, thus solving the problem of high dust concentration in the existing aggregate silo. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the concrete aggregate silo of the present invention.

[0018] Figure 2 for Figure 1 Cross-section view along AA axis.

[0019] Figure 3 This is a structural diagram of the upper support plate of the concrete aggregate silo of the present invention.

[0020] Figure 4 for Figure 3 sectional view of .

[0021] Figure 5This is a structural diagram of the aggregate silo ventilation system of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and a preferred implementation manner.

[0023] See also Figure 1-4 A concrete aggregate silo includes a silo body 1, a top cover 2 is provided on the top of the silo body, the silo body 1 includes an inner silo body 11 and an outer silo body 12, an annular ventilation passage 101 is formed between the inner silo body 11 and the outer silo body 12, a plurality of first ventilation holes are opened on the side wall of the inner silo body 11, the top cover 2 includes an inner top cover 21 and an outer top cover 22, the inner top cover 21 is connected to the inner silo body 11, the outer top cover 22 is connected to the outer silo body 12, an air collecting cavity 102 is formed between the inner top cover 21 and the outer top cover 22, the air collecting cavity 102 is communicated with the annular ventilation passage 101, the inner silo body 11 and the inner top cover 21 enclose a silo body cavity 100 for storing aggregates, the inner silo body 11 has a plurality of first ventilation holes ... and the outer top cover 22 have a plurality of first ventilation holes, the inner silo body 11 has a plurality of first ventilation holes, the top cover 2 includes an A central tube 3 is axially arranged, and a plurality of second ventilation holes are opened on the tube wall of the central tube 3 located in the inner bin body 11; a feed pipe 104 and an exhaust pipe 103 are arranged on the top cover 2; the feed pipe 104 passes through the outer top cover 22 and the inner top cover 21 to communicate with the inner cavity of the bin body; the exhaust pipe 103 passes through the outer top cover 22 to communicate with the air collecting chamber 102; the upper end of the central tube 3 passes through the inner top cover 21 and the outer top cover 22 to form an air inlet 105; the dry air enters the central tube 3 from the air inlet 105, is discharged through the second ventilation holes, radially passes through the aggregate, and then enters the annular ventilation duct 101 and the air collecting chamber 102 through the first ventilation holes, and is finally discharged from the aggregate bin through the exhaust pipe 103.

[0024] During specific implementation, the inner warehouse body 11 and the outer warehouse body 12 can be made of rolled steel plates, and a number of ventilation holes are evenly opened on the inner warehouse body 11. The shape of the ventilation holes can be circular, elliptical or elongated, preferably circular, and the aperture of the ventilation holes is smaller than the aggregate particle size. In order to ensure smooth material discharge, it is preferred that both the inner warehouse body 11 and the outer warehouse body 12 include a cylindrical section and a conical section, that is, the cylindrical section is formed by rolling a steel plate into a cylinder, and the conical section is formed by rolling a steel plate into a cone. In order to increase the structural strength of the inner warehouse body 11 and the outer warehouse body 12, and to fix the central tube 3, it is preferred that the cylindrical section and the conical section are connected by a lower support plate 5. The lower support plate 5 is composed of an annular orifice plate and a strip bracket, and the strip bracket is made of two vertical plates crossed into a cross shape and a circular ring, and the two vertical plates are connected by the circular ring. The strip bracket is fixed inside the annular orifice plate, the inner diameter of the annular orifice plate is equal to the inner diameter of the inner bin body 11, and the outer diameter of the annular orifice plate is equal to the outer diameter of the outer bin body 12. The cylindrical section ventilation duct and the conical section ventilation duct are connected through the holes of the annular orifice plate. The cross-arranged vertical plates can increase the strength and rigidity of the bracket, and the cross-shaped cross can reduce the obstruction to the aggregate during feeding.

[0025] The bottom of the conical section is connected to the discharge pipe 106, and the discharge pipe 106 is welded to the bottom of the inner warehouse body 11 and the outer warehouse body 12. The discharge pipe 106 is connected to the inner warehouse body 11, and the bottom of the ventilation duct 101 is closed by the discharge pipe 106. The discharge pipe 106 can be connected to a discharge baffle (not shown in the figure), and the bottom of the inner warehouse body 11 is closed by the discharge baffle.

[0026] The material of the top cover 2 is the same as that of the warehouse body, and the top cover can also be formed by pressing a steel plate. The top cover is preferably elliptical, and an air collecting chamber 102 is formed between the two elliptical top covers. In order to improve the structural strength of the warehouse body and the top cover, and to fix and install the central tube 3, the warehouse body 1 and the top cover 2 are preferably connected by an upper support plate 4, and the structure of the upper support plate 4 is the same as that of the lower support plate 5. The air collecting chamber 102 in the top cover 2 is connected to the annular ventilation duct 101 in the warehouse body 1 through the holes on the annular orifice plate of the upper support plate 4.

[0027] The central tube 3 is fixedly installed in the center of the silo body through the upper support plate 4 and the lower support plate 5. The upper end of the central tube 3 passes through the inner top cover 21 and the outer top cover 22 to form an air inlet 105. The lower end of the central tube 3 extends to the conical section of the silo body to connect the hollow ball 31. Preferably, the hollow ball 31 is located in the center of the cone, and its inner cavity is connected to the tube cavity of the central tube. A plurality of ventilation holes are provided on the side walls of the central tube 3 and the hollow ball 31, and the structure of the ventilation holes can be the same as that of the inner silo body. The lower end of the central tube 3 is closed by the hollow ball 31. The setting of the hollow ball 31 can increase the ventilation effect of the aggregate in the conical section of the silo, and due to the space-occupying effect of the hollow ball, the bridging phenomenon in the center of the silo body can be reduced when unloading.

[0028] In order to ensure uniform feeding, two feeding pipes 104 are preferably provided, and the two feeding pipes are symmetrically arranged on both sides of the central pipe 3.

[0029] When the concrete aggregate bin of the present application is in use, the central tube 3 can be connected to a ventilator, and the ventilator inputs dry air into the central tube. When the dry air radially flows through the aggregate, it takes away the moisture in the aggregate and is discharged from the exhaust pipe 103.

[0030] In order to improve the ventilation effect, the fan inlet can be connected to the air compressor, and dry compressed air can be input into the central tube through the fan. Alternatively, the fan inlet can be connected to the exhaust pipe 103, and the outlet can be connected to a drying tower, and the outlet of the drying tower can be connected to the central tube 3, so as to form a cycle, and the humid air is discharged from the exhaust pipe 103 and flows through the drying tower to be dried by the desiccant, and the dried air enters the silo through the central tube to dry the aggregate.

[0031] In addition, the present application also provides an aggregate silo ventilation system, see Figure 5 , the ventilation system includes Figure 1The concrete aggregate bin, dust collector 6, heater 7 and ventilator 8 are shown, the dust collector inlet is connected to the exhaust duct 103 through the first air duct, the dust collector outlet is connected to the ventilator inlet through the second air duct, the second air duct is provided with an air supply port, and the air supply port is installed with an air supply valve 81, the ventilator outlet is connected to the heater inlet through the third air duct, the third air duct is provided with an exhaust port, and the exhaust port is installed with an exhaust valve 82, and the heater outlet is connected to the central tube air inlet 105 through the fourth air duct. The fourth air duct is installed with a thermometer and hygrometer 83.

[0032] Preferably, the dust collector 6 is a bag dust collector, the ventilator 8 is a centrifugal blower, the heater 7 is an electric heater, and the air supply valve 81 and the exhaust valve 82 are both electric butterfly valves; the above equipment can be purchased on the market.

[0033] The method of using the above aggregate silo ventilation system includes:

[0034] When feeding, the heater is not started 7, the air supply valve 81 is closed, the exhaust valve 82 is opened, the dust collector 6 and the ventilator 8 are started, and under the suction action of the ventilator 8, the dust in the silo enters the dust collector 6 with the wind and is intercepted by the dust collector, and the clean air is discharged from the system through the exhaust valve 82.

[0035] When ventilation and drying are required, first open the air supply valve 81, close the exhaust valve 82, and then start the dust collector 6, heater 7 and fan 8. The air in the environment enters the fan 8 through the air supply valve 81, and enters the silo through the central pipe 3 after being heated by the heater 7. The hot air flows radially through the aggregate to vaporize the moisture in the aggregate, and the humid air is discharged from the exhaust pipe, and enters the fan 8 after the dust is filtered out by the dust collector 6, forming a hot air circulation, and the air supply valve 81 is closed.

[0036] When the temperature or humidity displayed by the thermometer and hygrometer 83 is high, the exhaust valve 82 and the air supply valve 81 can be opened to exhaust the hot and humid air from the system and replenish fresh air at the same time.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also within the protection scope of the present invention.

Claims

1. A concrete aggregate silo, comprising a silo body (1), characterized in that: The warehouse body (1) comprises an inner warehouse body (11) and an outer warehouse body (12), an annular ventilation passage (101) is formed between the inner warehouse body (11) and the outer warehouse body (12), a plurality of first ventilation holes are provided on the side wall of the inner warehouse body (11), a top cover (2) is provided on the top of the warehouse body (1), the top cover (2) comprises an inner top cover (21) and an outer top cover (22), the inner top cover (21) is connected to the inner warehouse body (11), the outer top cover (22) is connected to the outer warehouse body (12), an air collecting chamber (102) is formed between the inner top cover (21) and the outer top cover (22), the air collecting chamber (102) is communicated with the annular ventilation passage (101), a central tube (3) is axially provided inside the inner warehouse body (11), a plurality of second ventilation holes are provided on the tube wall of the central tube (3), A feed pipe (104) and an exhaust pipe (103) are provided on the top cover (2); the feed pipe (104) passes through the outer top cover (22) and the inner top cover (21) to communicate with the inner cavity of the bin body; the exhaust pipe (103) passes through the outer top cover (22) to communicate with the air collecting chamber (102); the upper end of the central pipe (3) passes through the inner top cover (21) and the outer top cover (22) to form an air inlet (105); the dry air enters the central pipe (3) from the air inlet (105), is discharged through the second ventilation hole, radially passes through the aggregate, enters the annular ventilation channel (101) and the air collecting chamber (102) through the first ventilation hole, and is finally discharged from the aggregate bin through the exhaust pipe (103).

2. A concrete aggregate silo according to claim 1, characterized in that: An upper support plate (4) is provided between the bin body (1) and the top cover (2), and the upper support plate (4) is composed of an annular orifice plate and a strip bracket, the strip bracket is fixed inside the annular orifice plate, and a central tube mounting hole is provided at the center of the strip bracket; the annular orifice plate is used to connect the inner bin body (11) and the inner top cover (21), and the air collecting chamber (102) is connected to the annular ventilation duct (101) through the hole on the annular orifice plate.

3. A concrete aggregate silo according to claim 2, characterized in that: The support comprises two vertical plates intersecting into a cross shape and a circular ring with an inner diameter matching the central tube.

4. A concrete aggregate silo according to claim 1, characterized in that: The silo body (1) comprises a cylindrical section and a conical section, a lower support plate (5) is provided between the cylindrical section and the conical section, the structure of the lower support plate (5) is the same as that of the upper support plate, the ventilation duct of the cylindrical section and the ventilation duct of the conical section are connected through a perforated plate of the lower support plate (5), the bottom of the conical section is connected to a discharge pipe (106), the bottom of the ventilation duct of the conical section is closed by the discharge pipe (106), and the discharge pipe (106) is closed by a discharge baffle.

5. A concrete aggregate silo according to claim 4, characterized in that: The lower end of the central tube (3) passes through the lower support plate (5) and is connected to a hollow ball. The hollow ball is located at the center of the conical section, and its inner cavity is communicated with the tube cavity of the central tube. The side wall of the hollow ball is provided with a plurality of third ventilation holes.

6. A concrete aggregate silo according to claim 1, characterized in that: The top cover (2) is an elliptical head top cover.

7. A concrete aggregate silo according to claim 1, characterized in that: There are two feed pipes (104), which are symmetrically arranged on both sides of the central pipe (3).

8. An aggregate silo ventilation system, characterized in that: A concrete aggregate silo comprising the embodiment of any one of claims 1 to 7, further comprising a dust collector (6), a heater (7) and a ventilator (8), wherein the inlet of the dust collector (6) is connected to an exhaust duct (103), the outlet of the dust collector (6) is connected to an inlet of the ventilator (8), the outlet of the ventilator (8) is connected to an inlet of the heater (7), and the outlet of the heater (7) is connected to an air inlet (105) of a central tube (3) via an air duct.

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