A urea supply rate efficient control device

Abstract

The utility model discloses a kind of urea supply speed efficient control device, it is related to urea supply technical field;And the utility model includes mixing barrel, the top end one side of mixing barrel is fixedly installed with feeding pipe, the top end one side of feeding pipe is fixedly connected with bunker, the inside rotation of feeding pipe is connected with helical blade, the one side fixed connection of mixing barrel top is with mounting plate;By variable speed motor drive helical blade and gear one rotation, the urea granule inside bunker is quantitatively transported, simultaneously utilize gear one and gear two meshing connection, drive agitator to rotate, urea inside feeding pipe is transported and stirred simultaneously, prevent urea granule from caking or adhering to bin wall in the inside of feeding pipe, ensure the smoothness of discharging, and by adjusting the rotational speed of variable speed motor control the rotational speed of helical blade, to control the discharging speed of urea granule inside feeding pipe, avoid the problem of manual feeding labor intensity of operator.

Description

Technical Field

[0001] This utility model relates to the field of urea supply technology, specifically to a high-efficiency control device for urea supply speed. Background Technology

[0002] In the current field of chemical and environmental protection equipment technology, urea, as an important reducing agent, is widely used in flue gas denitrification systems, such as SNCR (non-catalytic reduction) flue gas denitrification systems. In this system, solid urea particles need to be dissolved to prepare urea solution, and then injected into the combustion equipment through a power conveying and injection device to react with nitrogen oxides (NOx) in the flue gas, thereby reducing them to nitrogen (N2) and water, achieving the purpose of denitrification.

[0003] However, in the existing urea dissolution and preparation process, operators need to manually remove urea granules from the storage container and pour them into the dissolution and preparation device periodically. This is not only time-consuming and labor-intensive, but also increases labor costs. Furthermore, due to their physical properties, urea granules are prone to bridging, clumping, or adhering to the silo wall in the silo, leading to poor material flow or even complete blockage. To address these issues, the inventors propose a high-efficiency urea supply rate control device to solve these problems. Utility Model Content

[0004] To address the issue of manual feeding during the urea dissolution and preparation process, the purpose of this invention is to provide a highly efficient urea supply rate control device.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a high-efficiency control device for urea supply speed, comprising a mixing tank, a feeding pipe fixedly installed on one side of the top of the mixing tank, a hopper fixedly connected to one side of the top of the feeding pipe, a spiral blade rotatably connected inside the feeding pipe, an mounting plate fixedly connected to one side of the top of the mixing tank, a variable speed motor fixedly installed on the side of the mounting plate away from the feeding pipe, the drive end of the variable speed motor fixedly connected to the rotating shaft of the spiral blade, a gear one fixedly connected to the outer side of the drive end of the variable speed motor, an agitator rotatably connected inside the hopper, one end of the rotating shaft of the agitator extending to one side of the hopper and fixedly connected to a gear two, the gear one and gear two meshing, and the diameter of gear two being larger than the diameter of gear one.

[0006] Preferably, a feeding cylinder is fixedly connected to the top center of the mixing barrel, the feeding pipe communicates with the interior of the feeding cylinder, a rotating rod is rotatably connected to the top of the inner wall of the feeding cylinder, a uniform feeder is fixedly connected to the outer side of the top of the rotating rod, a stepper motor is fixedly installed at the top of the feeding cylinder, and the drive end of the stepper motor is fixedly connected to the rotating rod.

[0007] Preferably, equidistant stirring blades are fixedly connected to the outer side of the rotating rod and below the uniform feeder. A connecting rod is fixedly connected to one side of the uniform feeder. A stirring rod is rotatably connected to the bottom end of the connecting rod. A stirrer is fixedly connected to the bottom end of the stirring rod. A gear three is fixedly connected to the top end of the stirring rod extending to the top end of the connecting rod. A gear ring is fixedly connected to the top end of the inner wall of the mixing barrel. The gear three and the gear ring are meshed together.

[0008] Preferably, a feed trough is provided on one side of the top of the mixing barrel, and a discharge pipe communicating with the inside of the mixing barrel is fixedly connected to one side of the bottom of the mixing barrel, and a switch valve is installed on the discharge pipe.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. The variable speed motor drives the spiral blades and gear one to rotate, which quantitatively conveys the urea granules inside the hopper. At the same time, the meshing connection between gear one and gear two drives the agitator to rotate, which stirs the urea inside the feeding pipe while conveying it, preventing the urea granules from clumping inside the feeding pipe or adhering to the hopper wall, ensuring smooth material flow. The speed of the spiral blades is controlled by adjusting the speed of the variable speed motor, thereby controlling the feeding speed of the urea granules inside the feeding pipe, avoiding the problem of high labor intensity for operators when manually feeding materials.

[0011] 2. The stepper motor drives the uniform feeder to rotate, and the rotation of the uniform feeder evenly distributes the granular material, so that the granular material is evenly distributed into the interior of the mixing tank, avoiding local concentrations that are too high or too low, thereby improving the dissolution efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0016] Figure 4 This is a partial structural diagram of the present invention.

[0017] In the diagram: 1. Mixing tank; 2. Feeding pipe; 3. Hopper; 4. Spiral blade; 5. Mounting plate; 6. Variable speed motor; 7. Gear 1; 8. Gear 2; 9. Agitator; 10. Feeding cylinder; 11. Rotating rod; 12. Distributor; 13. Stepper motor; 14. Mixing blade; 15. Connecting rod; 16. Mixing rod; 17. Agitator; 18. Gear 3; 19. Gear ring; 20. Discharge pipe; 21. Feed trough. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Figure 1-4 As shown, this utility model provides a high-efficiency control device for urea supply speed, including a mixing tank 1, a feeding pipe 2 fixedly installed on one side of the top of the mixing tank 1, a hopper 3 fixedly connected to one side of the top of the feeding pipe 2, a spiral blade 4 rotatably connected inside the feeding pipe 2, an mounting plate 5 fixedly connected to one side of the top of the mixing tank 1, a variable speed motor 6 fixedly installed on the side of the mounting plate 5 away from the feeding pipe 2, the drive end of the variable speed motor 6 fixedly connected to the rotating shaft of the spiral blade 4, a gear 7 fixedly connected to the outer side of the drive end of the variable speed motor 6, an agitator 9 rotatably connected inside the hopper 3, one end of the rotating shaft of the agitator 9 extends to one side of the hopper 3 and is fixedly connected to a gear 8, the gear 7 and the gear 8 meshing together.

[0020] A feeding cylinder 10 is fixedly connected to the top center of the mixing tank 1. The feeding pipe 2 communicates with the inside of the feeding cylinder 10. A rotating rod 11 is rotatably connected to the top of the inner wall of the feeding cylinder 10. A uniform feeder 12 is fixedly connected to the outer side of the top of the rotating rod 11.

[0021] By adopting the above technical solution, during the quantitative feeding of urea, the falling urea particles fall to the top of the uniform feeder 12. The rotation of the uniform feeder 12 evenly distributes the particle material, thereby making the particle material evenly sprinkled into the interior of the mixing tank 1, avoiding local concentrations that are too high or too low, thus improving the dissolution efficiency.

[0022] Equally spaced stirring blades 14 are fixedly connected to the outside of the rotating rod 11 and below the uniform feeder 12. A connecting rod 15 is fixedly connected to one side of the uniform feeder 12. A stirring rod 16 is rotatably connected to the bottom end of the connecting rod 15. A stirrer 17 is fixedly connected to the bottom end of the stirring rod 16. A gear 18 is fixedly connected to the top end of the stirring rod 16 and the top end of the connecting rod 15. A gear ring 19 is fixedly connected to the top end of the inner wall of the mixing tank 1. The gear 18 and the gear ring 19 are meshed together.

[0023] By adopting the above technical solution, when the rotating rod 11 rotates, it drives the homogenizer 12 and the stirring blade 14 to rotate. The stirring blade 14 stirs the solution inside the mixing tank 1, thereby accelerating the dissolution of urea. At the same time, the homogenizer 12 rotates, driving the connecting rod 15, the stirring rod 16 and the gear 18 to revolve around the central axis of the rotating rod 11. The gear 18 and the gear ring 19 mesh with each other, and at the same time drive the stirring rod 16 and the stirrer 17 to rotate, thereby stirring the solution near the inner wall of the mixing tank 1 and improving the mixing efficiency.

[0024] A feed chute 21 is provided on one side of the top of the mixing tank 1, and a discharge pipe 20 communicating with the inside of the mixing tank 1 is fixedly connected to one side of the bottom of the mixing tank 1. A switch valve is installed on the discharge pipe 20.

[0025] By adopting the above technical solution, by setting up the feed trough 21, it is convenient to input water into the mixing tank 1, and to discharge the prepared urea solution by opening the switch valve.

[0026] A stepper motor 13 is fixedly installed at the top of the feed cylinder 10, and the drive end of the stepper motor 13 is fixedly connected to the rotating rod 11.

[0027] By adopting the above technical solution, the stepper motor 13 drives the rotating rod 11 to rotate, thereby realizing the driving of the rotating rod 11.

[0028] The diameter of gear 2 (8) is larger than the diameter of gear 1 (7).

[0029] By adopting the above technical solution, by setting the diameter of gear 2 8 to be larger than the diameter of gear 1 7, it is easier to control the rotation ratio of agitator 9 and spiral blade 4, thereby controlling the rotation speed of agitator 9 and spiral blade 4, making the equipment operate more stably.

[0030] Working principle: When preparing urea, urea granules are filled into the silo 3 beforehand. When preparing urea solution, the variable speed motor 6 drives the spiral blade 4 and gear 7 to rotate, quantitatively conveying the urea granules in the silo 3. At the same time, the gear 7 meshes with the gear 8 to drive the agitator 9 to rotate, stirring the urea in the feeding pipe 2 while conveying it, preventing the urea granules from clumping or adhering to the silo wall inside the feeding pipe 2, ensuring smooth feeding. The speed of the spiral blade 4 is controlled by adjusting the speed of the variable speed motor 6, thereby controlling the feeding speed of the urea granules in the feeding pipe 2.

[0031] During the quantitative feeding of urea, the falling urea particles land on the top of the uniform feeder 12. The stepper motor 13 drives the uniform feeder 12 to rotate. The rotation of the uniform feeder 12 evenly distributes the granular material, so that the granular material is evenly scattered into the interior of the mixing tank 1, avoiding local concentrations that are too high or too low, thereby improving the dissolution efficiency.

[0032] Simultaneously, when the rotating rod 11 rotates, it drives the homogenizer 12 and the stirring blade 14 to rotate. The stirring blade 14 stirs the solution inside the mixing tank 1, thereby accelerating the dissolution of urea. While the homogenizer 12 rotates, it drives the connecting rod 15, the stirring rod 16, and the gear 18 to revolve around the central axis of the rotating rod 11. The gear 18 and the gear ring 19 mesh with each other, and at the same time, it drives the stirring rod 16 and the stirrer 17 to rotate, thereby stirring the solution near the inner wall of the mixing tank 1, further improving the mixing efficiency.

[0033] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high-efficiency control device for urea supply rate, comprising a mixing tank (1), characterized in that: A feeding pipe (2) is fixedly installed on one side of the top of the mixing tank (1). A hopper (3) is fixedly connected to one side of the top of the feeding pipe (2). A spiral blade (4) is rotatably connected inside the feeding pipe (2). An installation plate (5) is fixedly connected to one side of the top of the mixing tank (1). A variable speed motor (6) is fixedly installed on the side of the installation plate (5) away from the feeding pipe (2). The drive end of the variable speed motor (6) is fixedly connected to the rotating shaft of the spiral blade (4). A gear one (7) is fixedly connected to the outside of the drive end of the variable speed motor (6). An agitator (9) is rotatably connected inside the hopper (3). One end of the rotating shaft of the agitator (9) extends to one side of the hopper (3) and is fixedly connected to a gear two (8). The gear one (7) and the gear two (8) are meshed together.

2. The urea supply rate high-efficiency control device as described in claim 1, characterized in that, The mixing barrel (1) is fixedly connected to the top center of the feed cylinder (10), the feeding pipe (2) is connected to the inside of the feed cylinder (10), the top of the inner wall of the feed cylinder (10) is rotatably connected to the rotating rod (11), and the outer side of the top of the rotating rod (11) is fixedly connected to the uniform feeder (12).

3. The urea supply rate high-efficiency control device as described in claim 2, characterized in that, Equally spaced stirring blades (14) are fixedly connected to the outside of the rotating rod (11) and below the uniform feeder (12). A connecting rod (15) is fixedly connected to one side of the uniform feeder (12). A stirring rod (16) is rotatably connected to the bottom end of the connecting rod (15). A stirrer (17) is fixedly connected to the bottom end of the stirring rod (16). The top end of the stirring rod (16) extends to the top end of the connecting rod (15) and is fixedly connected to a gear three (18). A gear ring (19) is fixedly connected to the top end of the inner wall of the mixing tank (1). The gear three (18) and the gear ring (19) are meshed together.

4. The urea supply rate high-efficiency control device as described in claim 1, characterized in that, The mixing barrel (1) has a feeding trough (21) on one side of its top end, and a discharge pipe (20) that communicates with the inside of the mixing barrel (1) is fixedly connected to one side of its bottom end. A switch valve is installed on the discharge pipe (20).

5. The urea supply rate high-efficiency control device as described in claim 2, characterized in that, A stepper motor (13) is fixedly installed at the top of the feed cylinder (10), and the drive end of the stepper motor (13) is fixedly connected to the rotating rod (11).

6. The urea supply rate high-efficiency control device as described in claim 1, characterized in that, The diameter of gear 2 (8) is greater than the diameter of gear 1 (7).

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