Discharging system of powder tank

Abstract

The invention relates to the technical field of powder discharging devices, and discloses a powder tank discharging system which comprises a tank body, a containing cavity used for storing powder is formed in the tank body, and a discharging port is formed in the bottom of the tank body and used for outputting the powder in the containing cavity; an auxiliary part is arranged at the end, close to the discharging port, of the tank body and comprises a plurality of air conveying pipes, the air conveying pipes are evenly distributed in the circumferential direction of the tank body, one ends of the air conveying pipes communicate with the containing cavity, and the air conveying pipes are used for supplying air into the containing cavity; and the auxiliary part is used for pushing the powder to be discharged through wind power conveyed by the air conveying pipe. The powder discharging device has the beneficial effects of being simple in structure, high in powder discharging efficiency and less in powder accumulation and blockage.

Description

Technical Field

[0001] The invention relates to the technical field of powder material unloading devices, and in particular to a powder material tank unloading system. Background Art

[0002] In construction production, powders such as stone powder or concrete powder are a common material. Since the particles of powder are small, during storage and transportation, the powder is easily dispersed into the air under the action of airflow or vibration, causing environmental pollution. In order to ensure the cleanliness of the environment during powder storage and transportation, it is usually necessary to store and transport the powder in a closed tank to prevent the powder from diffusing outward through the air.

[0003] For example, the patent document with publication number CN110745400A discloses a powder tank, which includes a body, a vibrating dust collector is arranged on the top of the body, the vibrating dust collector is provided with a shell, a waterproof top cover is arranged on the top of the shell, an exhaust duct is arranged between the shell and the waterproof top cover, a filter layer is arranged inside the shell, a vibrating cleaner is arranged on the top of the filter layer, a support frame is arranged on the body, a manual butterfly valve is arranged on the bottom of the body, and a conveying pipeline is arranged at the bottom of the manual butterfly valve. This technical solution can automatically release the gas inside itself, avoid the situation of cylinder explosion due to excessive internal air pressure, and prevent the environment from being polluted due to powder leakage.

[0004] Although the above technical scheme can realize automatic release of gas in the powder tank and avoid the powder tank from bursting due to excessive pressure, when the powder is stored in the powder tank, in order to facilitate the unloading of the powder, the powder is usually stored in the powder tank in a stacked manner along the height direction, and a conveying pipe is set at the bottom of the powder tank to unload the powder, so as to increase the capacity of the powder tank while ensuring that the powder in the powder tank can automatically move to one end of the conveying pipe under the action of gravity, thereby improving the convenience of unloading the powder tank; as a result, the powder at one end of the bottom of the powder tank is subjected to a greater pressure from the powder stacked and distributed in the height direction, and in order to ensure that the powder can move more concentratedly toward the conveying pipe, a funnel shape is usually adopted at the bottom of the powder tank, resulting in the powder being closer to the conveying pipe in the powder tank. The greater the pressure, and the powdered powder is usually easy to condense into lumps under high pressure, which is not conducive to the movement of the powder in the powder tank, which leads to blockage when the powder tank is unloaded, affecting the normal unloading operation of the powder tank. Summary of the invention

[0005] The present invention is intended to provide a powder tank unloading system to solve the technical problem in the prior art that powder is easily condensed into agglomerates in the powder tank, thereby causing blockage when the powder tank is unloaded.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a powder tank unloading system, comprising a tank body, a containing cavity for storing powder is provided in the tank body, a discharge port is provided at the bottom of the tank body, and the discharge port is used to output the powder in the containing cavity; an auxiliary part is provided at one end of the tank body close to the discharge port, and the auxiliary part comprises a plurality of air conveying pipes, and the plurality of air conveying pipes are evenly distributed along the circumference of the tank body, one end of the air conveying pipe is connected with the containing cavity, and the air conveying pipe is used to supply air into the containing cavity, and the auxiliary part is used to push the powder to be unloaded by the wind force delivered by the air conveying pipe.

[0007] The principle and advantages of this solution are as follows: when storing powder, the powder to be stored is transported to the storage chamber of the tank through the feed pipe for storage, and when the powder stored in the storage chamber needs to be discharged, the powder is discharged from the discharge port. When the powder is discharged, the air delivery pipe in the auxiliary part blows air into the storage chamber, so that the powder in the storage chamber moves under the impetus of the wind in the air delivery pipe, and the auxiliary powder is discharged from the discharge port.

[0008] In the present solution, an auxiliary part is provided on the tank body, so that when the powder is discharged, the powder at the discharge port of the powder tank is pushed to move by the auxiliary part, so that the powder in the powder tank can move under the push of the auxiliary part, thereby avoiding the phenomenon that the powders are tightly adhered to each other and agglomerated under the effect of accumulation, thereby affecting the normal discharge of the powder; and when the powder is pushed to move by the auxiliary part, the contact between the powder and the inner wall of the powder tank can be reduced, thereby avoiding the powder adhering to the inner wall of the powder tank, causing the discharge port of the powder tank to be blocked by the adhered powder, thereby reducing the discharge efficiency of the powder tank and increasing the maintenance cost of the powder tank.

[0009] Preferably, as an improvement, a funnel is provided at the bottom of the tank body, one end of the funnel is connected to the bottom of the tank body, the other end of the funnel extends downward in the height direction, and the diameter of the funnel gradually decreases in the direction away from the tank body. When the powder is discharged through the discharge port, the powder in the accommodating cavity can be collected to the discharge port under the action of the funnel, so that the powder stored in the accommodating cavity can be discharged directly through the discharge port under the action of gravity, reducing the powder residue in the accommodating cavity at the discharge port.

[0010] Preferably, as an improvement, one end of the air conveying pipe close to the accommodating chamber passes through the side wall of the funnel portion, and the inclination angle of the opening of the air conveying pipe at one end of the accommodating chamber is consistent with the inclination angle of the inner wall of the funnel portion. This allows the opening of the air conveying pipe at one end of the accommodating chamber to fit with the inner wall of the accommodating chamber, thereby reducing the space occupied by the air conveying pipe in the accommodating chamber, ensuring the volume of the accommodating chamber, and preventing the air conveying pipe from extending into the accommodating chamber, resulting in a dead angle between the air conveying pipe and the side wall of the accommodating chamber, and causing the powder to accumulate in the angle area between the air conveying pipe and the accommodating chamber.

[0011] Preferably, as an improvement, the opening of the air conveying pipe at one end of the accommodating chamber extends toward both ends of the accommodating chamber in the height direction, so that the wind force output by the air conveying pipe can have a wider coverage range in the accommodating chamber, ensuring that the powder at the bottom of the accommodating chamber can be dispersed under the action of the wind force delivered by the air conveying pipe, thereby improving the looseness of the powder stored at the bottom of the accommodating chamber.

[0012] Preferably, as an improvement, a partition cloth is provided at one end of the air delivery tube located in the accommodating chamber, and the partition cloth completely covers the opening of the air delivery tube at one end located in the accommodating chamber; the partition cloth is provided with a plurality of fine holes for air to pass through, and the diameter of the fine holes is smaller than the diameter of the powder. By providing the partition cloth on the air delivery tube, it is possible to prevent the powder in the accommodating chamber from flowing back into the air delivery tube, causing the air delivery tube to be blocked, thereby ensuring the air delivery efficiency in the air delivery tube.

[0013] Preferably, as an improvement, the area of ​​the partition cloth laid on the opening of the air conveying pipe is larger than the area of ​​the opening of the air conveying pipe, and the partition cloth can move on the air conveying pipe in a direction close to or away from the opening of the air conveying pipe. This allows the partition cloth to form a drum surface structure under the action of the wind in the air conveying pipe, so that the partition cloth can adjust the distance extended into the accommodating chamber according to the wind force blown out of the air conveying pipe, so as to achieve periodic adjustment of the wind force during the unloading process, so that the partition cloth can continuously beat the powder, increase the driving force when the powder is discharged, and further improve the discharge efficiency of the powder.

[0014] Preferably, as an improvement, a one-way valve is provided in the air conveying pipe, and the one-way valve is located at one end of the air conveying pipe close to the accommodating chamber. When smaller dust particles in the powder enter the air conveying pipe or the powder flows back, the dust or powder entering the air conveying pipe can enter the air conveying pipe under the obstruction of the one-way valve, thereby preventing a large amount of dust or powder from entering the air conveying pipe and causing the air conveying pipe to be blocked. The small amount of dust or powder entering the air conveying pipe can be discharged from the air conveying pipe under the action of wind in the air conveying pipe, thereby ensuring the smoothness of the air conveying pipe.

[0015] Preferably, as an improvement, a detection unit is further included, the detection unit includes a first sensor and a second sensor, the first sensor is used to detect the pressure in the accommodating chamber, and the second sensor is used to detect the flow rate of the discharge port. The discharge condition of the powder is detected by the detection unit to ensure that the specific condition of the powder during discharge can be grasped in time, so as to facilitate the control of the powder discharge process according to the actual discharge condition of the powder, and ensure the efficiency of the powder discharge.

[0016] Preferably, as an improvement, it further includes a control unit, which adjusts the wind force of the air conveying pipe and the opening and closing of the discharge port according to the detection result of the detection unit. The control unit adjusts the specific working conditions of the discharge system according to the actual discharge conditions of the powder material, ensuring that the operation of the powder material discharge system matches the actual conditions of the powder material, and ensuring the smooth discharge of the powder material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the powder tank unloading system in an embodiment of the present invention.

[0018] Figure 2 It is a structural cross-sectional view of a powder tank unloading system in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following is further described in detail through specific implementation methods:

[0020] The figure marks in the drawings of the specification include: tank body 1, accommodating chamber 101, discharge port 102, feed port 103, bracket 104, control valve 105, funnel part 2, auxiliary part 3, air delivery pipe 301, partition cloth 302, one-way valve 303, detection unit 4, first sensor 401, second sensor 402.

[0021] As attached Figure 1 With attached Figure 2As shown, a powder tank unloading system includes a tank body 1, a containing chamber 101 is provided in the tank body 1, and powder is stored in the containing chamber 101; a discharge port 102 is provided at the bottom of the tank body 1, and the discharge port 102 is used to discharge the powder in the containing chamber 101; an auxiliary part 3 is provided on one side of the discharge port 102, and the auxiliary part 3 is used to assist the powder to be discharged through the discharge port 102.

[0022] The tank body 1 is a cylindrical tank body 1, and the central axis of the tank body 1 extends upward in the height direction. A bracket 104 is connected to the bottom of the tank body 1 by bolts or welding, and the bracket 104 is used to fix the position of the tank body 1. A feed port 103 is provided on the top of the tank body 1, and the feed port 103 is connected to the accommodating chamber 101 in the tank body 1. The feed port 103 is used to transport powder into the accommodating chamber 101. Specifically, a feed pipe is connected to the end of the feed port 103 away from the accommodating chamber 101, and the feed pipe is used to transport the powder through the feed port 103 to the accommodating chamber 101 for storage.

[0023] A funnel 2 is provided at the bottom of the tank body 1. One end of the funnel 2 is fixedly connected to the bottom of the tank body 1 by welding, and the other end extends downward in the height direction, and the diameter of the funnel 2 gradually decreases in the direction away from the tank body 1. A discharge port 102 is provided at the end of the funnel 2 away from the tank body 1, and the discharge port 102 is connected to the accommodating chamber 101 in the tank body 1; a discharge pipe is connected at the end of the discharge port 102 away from the accommodating chamber 101, and the discharge port 102 is used to discharge the powder in the accommodating chamber 101 through the discharge pipe. When the powder is discharged through the discharge port 102, the powder in the accommodating chamber 101 can be collected to the discharge port 102 under the action of the funnel 2, so that the powder stored in the accommodating chamber 101 can be discharged directly through the discharge port 102 under the action of gravity, reducing the powder residue in the accommodating chamber 101 at the discharge port.

[0024] A control valve 105 is provided in the discharge port 102, and the control valve 105 is used to control the opening and closing of the discharge port 102. Preferably, in this embodiment, the control valve 105 uses a solenoid valve. In other embodiments, other types of control valves 105 can also be used to control the opening and closing of the discharge port 102. The specific structure of the control valve 105 is a prior art and will not be described in detail here. By providing the control valve 105 at the discharge port 102, the discharge port 102 can adjust the opening and closing size according to actual needs, ensuring that the specific conditions of the discharge port 102 can match the actual needs of the powder discharge.

[0025] The auxiliary part 3 includes a plurality of air delivery pipes 301, which are evenly distributed in the circumferential direction of the funnel part 2. Preferably, in the present embodiment, the auxiliary part 3 includes two air delivery pipes 301, which are distributed opposite to each other on both sides of the funnel part 2, wherein the air delivery pipes 301 can be air delivery devices such as air delivery chutes; one end of the air delivery pipe 301 is connected to the fan, and the other end passes through the side wall of the funnel part 2 and extends into the accommodating cavity 101, and the air delivery pipe 301 is used to blow air into the accommodating cavity 101. Air is blown into the accommodating chamber 101 through the air conveying pipe 301, so that the powder in the accommodating chamber 101 can move under the action of wind force, avoiding pushing the powder by means of a pressing plate, etc., so that the powder is compacted under the squeezing of the pressing plate, aggravating the blockage of the powder; and by blowing air into the accommodating chamber 101, air can pass through the gaps between the powders, so that adjacent powder particles can be dispersed under the action of wind force, thereby increasing the looseness of the powder. After the air conveying pipe 301 blows air into the accommodating chamber 101, the air injected into the accommodating chamber 101 is output through the discharge port 102 under the action of air pressure, driving the discharge of the powder in the accommodating chamber 101, increasing the smoothness of the powder discharge, and improving the efficiency of powder unloading.

[0026] A separator cloth 302 is provided at one end of the air conveying tube 301 located in the accommodating chamber 101, and the separator cloth 302 completely covers the opening of the air conveying tube 301 at one end of the accommodating chamber 101, wherein the separator cloth 302 is a breathable cloth, and specifically, a plurality of fine holes for air to pass through are provided on the separator cloth 302, and the diameter of the fine holes is smaller than the diameter of the powder stored in the accommodating chamber 101; the separator cloth 302 is fixedly connected to the side wall of one end of the air conveying tube 301 by a fixed pressing plate, and specifically, the fixed pressing plate is annular, and the size of the fixed pressing plate matches the opening size of the air conveying tube 301 at one end of the accommodating chamber 101, and the fixed pressing plate can be sleeved on the air conveying tube 301, and the fixed pressing plate and the separator cloth 302 are stacked and distributed on the side wall of the air conveying tube 301, and the fixed pressing plate is fixedly connected to the side wall of the air conveying tube 301 by bolts, and the fixed pressing plate is used to fix the separator cloth 302. By providing the partition cloth 302 on the air conveying pipe 301 , it is possible to prevent the powder in the accommodating chamber 101 from flowing back into the air conveying pipe 301 and causing the air conveying pipe 301 to be blocked, thereby ensuring the air conveying efficiency in the air conveying pipe 301 .

[0027] The area of ​​the partition cloth 302 laid on the air conveying pipe 301 at one end of the accommodating chamber 101 is larger than the area of ​​the opening of the air conveying pipe 301. The partition cloth 302 can move on the air conveying pipe 301 in the direction close to or away from the opening of the air conveying pipe 301, that is, the partition cloth 302 has a movable margin reserved on the opening of the air conveying pipe 301, so that the partition cloth 302 can move back and forth under the action of the wind in the air conveying pipe 301. The partition cloth 302 can form a drum surface structure under the action of the wind in the air conveying pipe 301, so that the partition cloth 302 can adjust the distance extended into the accommodating chamber 101 according to the size of the wind blown out of the air conveying pipe 301, so as to achieve periodic adjustment of the size of the wind during the unloading process, so that the partition cloth 302 can continuously beat the powder, increase the driving force when the powder is discharged, and further improve the discharge efficiency of the powder.

[0028] The opening of the air conveying pipe 301 at one end of the accommodating chamber 101 extends toward both ends of the accommodating chamber 101 along the height direction. Specifically, one end of the opening of the air conveying pipe 301 at one end of the accommodating chamber 101 extends toward the discharge port 102 at the bottom of the accommodating chamber 101, and the other end of the opening of the air conveying pipe 301 extends toward the top of the accommodating chamber 101 along the height direction. Extending the opening of the air conveying pipe 301 in the accommodating chamber 101 along the height direction allows the wind force output by the air conveying pipe 301 to have a wider coverage range in the accommodating chamber 101, ensuring that the powder at the bottom of the accommodating chamber 101 can be dispersed under the action of the wind force delivered by the air conveying pipe 301, thereby improving the looseness of the powder stored at the bottom of the accommodating chamber 101.

[0029] The air delivery tube 301 is tilted between the opening at one end of the accommodating chamber 101 and the central axis of the accommodating chamber 101. Specifically, the tilt angle of the air delivery tube 301 at one end of the accommodating chamber 101 is consistent with the tilt angle of the inner wall of the funnel portion 2. This allows the opening of the air delivery tube 301 at one end of the accommodating chamber 101 to fit with the inner wall of the accommodating chamber 101, thereby reducing the space occupied by the air delivery tube 301 in the accommodating chamber 101, ensuring the volume of the accommodating chamber 101 while preventing the air delivery tube 301 from extending into the accommodating chamber 101, resulting in a dead angle between the air delivery tube 301 and the side wall of the accommodating chamber 101, and causing the powder to accumulate in the angle area between the air delivery tube 301 and the accommodating chamber 101.

[0030] A one-way valve 303 is provided in the air delivery pipe 301. The one-way valve 303 is located at one end of the air delivery pipe 301 close to the accommodating chamber 101. The one-way valve 303 is used to prevent the powder in the accommodating chamber 101 from flowing back into the air delivery pipe 301. When smaller dust particles in the powder pass through the partition cloth 302 and enter the air delivery pipe 301, or when gaps appear on the partition cloth 302 and cause the powder to flow back, the dust or powder entering the air delivery pipe 301 can enter the inside of the air delivery pipe 301 under the obstruction of the one-way valve 303, thereby preventing a large amount of dust or powder from entering the inside of the air delivery pipe 301 and causing the air delivery pipe 301 to be blocked. A small amount of dust or powder entering the air delivery pipe 301 can be discharged from the air delivery pipe 301 under the action of wind in the air delivery pipe 301, thereby ensuring the smoothness of the air delivery pipe 301.

[0031] The detection unit 4 is also included, and the detection unit 4 includes a first sensor 401 and a second sensor 402, wherein the first sensor 401 is used to detect the pressure in the accommodating chamber 101, and the second sensor 402 is used to detect the flow rate of the discharge port 102. Specifically, the first sensor 401 is located at one end of the accommodating chamber 101 close to the discharge port 102, and the first sensor 401 is used to detect the pressure of the powder at the bottom of the accommodating chamber 101. Preferably, in this embodiment, the first sensor 401 uses an industrial-grade pressure sensor with a model of M5200 to detect the pressure of the powder; the second sensor 402 is located at the discharge port 102, and preferably, in this embodiment, the second sensor 402 uses a powder flow meter with a model of DN25 to detect the output flow rate of the powder at the discharge port 102. The discharge condition of the powder is detected by the detection unit 4, so as to ensure that the specific condition of the powder during discharge can be timely grasped, so as to facilitate the control of the discharge process of the powder according to the actual discharge condition of the powder, and ensure the efficiency of the powder discharge.

[0032] It also includes a control unit, which is electrically connected to the detection unit 4, the fan and the control valve 105. The control unit is used to control the air supply power of the fan and the size of the control valve 105 according to the detection result of the detection unit 4. Specifically, when the first sensor 401 of the detection unit 4 detects that the powder pressure increases, the air supply power of the fan is increased, so that the powder in the accommodating chamber 101 can become loose under the driving effect of the wind; when the first sensor 401 detects that the pressure of the powder increases and the discharge flow rate of the discharge port 102 decreases, the powder at the discharge port 102 may be agglomerated. The control unit controls to increase the air supply power of the fan and adjusts the opening size of the discharge port 102 through the control valve 105 to facilitate the discharge of agglomerated powder. The control unit adjusts the specific working conditions of the discharge system according to the actual discharge conditions of the powder, ensuring that the operation of the powder discharge system matches the actual conditions of the powder and ensuring the smoothness of the powder discharge.

[0033] The specific implementation process is as follows:

[0034] When the powder is stored, the powder to be stored is transported to the containing chamber 101 of the tank body 1 through the feed pipe for storage. When the powder stored in the containing chamber 101 needs to be discharged, the powder is discharged from the discharge port 102 through the discharge pipe. When the powder is discharged, the air delivery pipe 301 in the auxiliary part 3 blows air into the containing chamber 101, so that the powder in the containing chamber 101 moves under the impetus of the wind in the air delivery pipe 301, and the auxiliary powder is discharged from the discharge port 102.

[0035] Compared with the prior art, in the present solution, an auxiliary part 3 is provided on the tank body 1, so that when the powder is discharged, the powder at the powder tank discharge port 102 is pushed to move by the auxiliary part 3, so that the powder in the powder tank can move under the push of the auxiliary part 3, thereby avoiding the phenomenon that the powders are tightly adhered to each other and agglomerated under the action of accumulation, thereby affecting the normal discharge of the powder; and when the powder is pushed to move by the auxiliary part 3, the contact between the powder and the inner wall of the powder tank can be reduced, thereby avoiding the powder from adhering to the inner wall of the powder tank, causing the powder tank discharge port 102 to be blocked by the adhered powder, thereby reducing the discharge efficiency of the powder tank and increasing the maintenance cost of the powder tank.

[0036] It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A powder tank unloading system, characterized in that: It comprises a tank body, wherein a holding cavity for storing powder is provided in the tank body, and a discharge port is provided at the bottom of the tank body, and the discharge port is used to discharge the powder in the holding cavity; an auxiliary part is provided at one end of the tank body close to the discharge port, and the auxiliary part comprises a plurality of air conveying pipes, and the plurality of air conveying pipes are evenly distributed along the circumference of the tank body, one end of the air conveying pipe is connected with the holding cavity, and the air conveying pipe is used to supply air into the holding cavity, and the auxiliary part is used to push the powder to be discharged through the wind force supplied by the air conveying pipe.

2. A powder tank unloading system according to claim 1, characterized in that: A funnel portion is provided at the bottom of the tank body, one end of the funnel portion is connected to the bottom of the tank body, and the other end of the funnel portion extends downward in the height direction. The diameter of the funnel portion gradually decreases in the direction away from the tank body.

3. A powder tank unloading system according to claim 2, characterized in that: One end of the air delivery pipe close to the accommodating cavity penetrates through the side wall of the funnel portion, and the inclination angle of the opening of the air delivery pipe at one end of the accommodating cavity is consistent with the inclination angle of the inner wall of the funnel portion.

4. A powder tank unloading system according to claim 3, characterized in that: The opening of the air delivery pipe at one end of the accommodating cavity extends toward both ends of the accommodating cavity along the height direction.

5. A powder tank unloading system according to claim 1, characterized in that: A partition cloth is provided at one end of the air delivery pipe located in the accommodating chamber, and the partition cloth completely covers the opening of the air delivery pipe at one end located in the accommodating chamber; the partition cloth is provided with a plurality of fine holes for air to pass through, and the diameter of the fine holes is smaller than the diameter of the powder.

6. A powder tank unloading system according to claim 5, characterized in that: The area of ​​the partition cloth laid on the opening of the air conveying pipe is larger than the area of ​​the opening of the air conveying pipe, and the partition cloth can move on the air conveying pipe in a direction close to or away from the opening of the air conveying pipe.

7. A powder tank unloading system according to claim 1, characterized in that: A one-way valve is arranged in the air delivery pipe, and the one-way valve is located at one end of the air delivery pipe close to the accommodating chamber.

8. A powder tank unloading system according to claim 1, characterized in that: It also includes a detection unit, which includes a first sensor and a second sensor. The first sensor is used to detect the pressure in the accommodating cavity, and the second sensor is used to detect the flow rate of the discharge port.

9. A powder tank unloading system according to claim 8, characterized in that: It also includes a control unit, which adjusts the wind force delivered by the air delivery pipe and the opening and closing of the discharge port according to the detection result of the detection unit.

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