Pretreatment tank

Abstract

The utility model relates to the technical field of adblue, in particular to a pretreatment tank which comprises a tank body, a rotating mechanism, a sowing mechanism and a ventilation mechanism used for injecting nitrogen, the inner top surface of the tank body is rotatably connected with a stirring rod, and the outer side wall of the stirring rod is fixedly sleeved with a plurality of stirring impellers. According to the device, raw materials are added into the automatic hopper, liquid flow in the barrel body is stirred through rotation of the stirring rod, the driving motor is started to drive the barrel body to rotate reversely, the mixing effect is improved, meanwhile, nitrogen is injected into the annular shell and the square through pipe through the air pump and the ventilation pipe, and the position of the nitrogen introduced into the liquid flow is changed when the barrel body rotates; an automatic hopper is started to sequentially and quantitatively add raw materials into a connecting cylinder through a connecting pipe, a power motor is started to drive an auger to rotate to feed the raw materials in the connecting cylinder into a hollow shell, so that the raw materials are preliminarily mixed with liquid flow in the hollow shell, and meanwhile, a stirring rod drives a flapping plate to synchronously rotate; liquid flow in the hollow shell is discharged into the barrel body to be mixed again, so that the mixing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle urea, in particular to a pretreatment tank. Background Art

[0002] Automotive urea is a treatment fluid used to treat diesel exhaust. It is a liquid additive specifically used to reduce nitrogen oxide (NOx) pollution in diesel exhaust. Its main components are 32.5% high-purity urea and 67.5% deionized water. When producing urea solution, the urea raw material and the liquid need to be fully mixed. In general, a mixing tank is used to mix the urea and liquid. Usually, water is added to the tank, and the stirring rod is started to stir the liquid flow. Then, the proportioned urea is divided into multiple portions and added in sequence. In the tank, multiple raw materials are mixed with the liquid flow in sequence, and urea can be aerated while being stirred. The accumulation of toxic gases such as ammonia produced during the decomposition of urea is prevented by introducing nitrogen. When adding the raw materials into the tank, they are often directly sprinkled onto the liquid flow in the tank. Urea is easily soluble in water and can dissolve quickly at room temperature. This may result in a higher urea concentration on the surface and top of the liquid flow and a lower urea concentration at the bottom. A certain amount of stirring time is required to make the urea concentration of the liquid flow uniform, resulting in low mixing efficiency and inconvenience. Utility Model Content

[0003] The purpose of the present invention is to provide a pretreatment tank to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A pretreatment tank, comprising:

[0006] A tank body, a rotating mechanism, a spreading mechanism and a ventilation mechanism for injecting nitrogen, the top surface of the tank body is rotatably connected to a stirring rod, the outer wall of the stirring rod is fixedly sleeved with multiple stirring impellers, the rotating mechanism is located inside the tank body, the rotating mechanism includes a barrel body, and the center of the bottom surface of the barrel body is rotatably connected to the bottom surface of the tank body, the spreading mechanism is located on the outer wall of the stirring rod, and the ventilation mechanism is located between the tank body and the barrel body.

[0007] Furthermore, a power box is fixedly connected to the bottom surface of the tank body, and a driving motor is arranged inside the power box. The motor shaft of the driving motor passes through the bottom surface of the tank body and is fixedly connected to the center of the bottom surface of the barrel body.

[0008] Further, the spreading mechanism includes:

[0009] The top end of the connecting tube is fixedly connected to the top surface of the tank body, and the outer wall of the connecting tube is connected to the upper and lower surfaces of the tank body. The connecting tube is fixedly connected to the outer wall of the connecting tube by a guide tube. The inner wall of the connecting tube is connected to the upper and lower surfaces of the tank body.

[0010] Furthermore, the top surface of the tank body is fixedly connected to a motor box, and a power motor is arranged inside the motor box. The motor shaft of the power motor passes through the top surface of the tank body and is fixedly connected to an auger, and the auger is located inside the connecting cylinder.

[0011] Further, the ventilation mechanism includes:

[0012] The flask has a plurality of air intake ports, each of which is connected to the outer wall of the flask, and a plurality of air intake ports are connected to the flask.

[0013] Furthermore, two rubber rings are fixedly sleeved on the outer wall of the barrel body, and the two rubber rings are in contact with the inner top surface and inner bottom surface of the annular shell on opposite sides respectively; a rubber plate is fixedly connected to the inner wall of any air outlet, and an air outlet hole is opened on the top surface of any rubber plate.

[0014] Furthermore, a plurality of ultrasonic generators are provided on the top surface of the tank body, and the plurality of ultrasonic generators are fixedly connected to transducers, the plurality of transducers are fixedly connected to the top surface of the tank body, and the plurality of transducers are fixedly connected to amplitude transformers, and the plurality of amplitude transformers pass through the top surface of the tank body and are located inside the barrel body.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The raw materials are added to the automatic hopper, and then the DC motor is started to drive the stirring rod to rotate, so that the stirring liquid flow stirs the liquid flow inside the barrel body, and at the same time, the drive motor is started to drive the barrel body to reverse, so that the liquid flow inside the barrel body produces a complex flow pattern, thereby improving the mixing effect. At the same time, the automatic hopper is started to add the raw materials into the connecting cylinder in sequence through the connecting pipe, and then the power motor is started to drive the auger to rotate, so that the auger sends the raw materials inside the connecting cylinder into the hollow shell, so that the raw materials and the liquid flow in the hollow shell are preliminarily mixed. At the same time, when the stirring rod rotates, the fan plate is driven to rotate synchronously, and the liquid flow inside the hollow shell is discharged into the barrel body for mixing again, thereby improving the mixing effect. Nitrogen can be injected into the annular shell through the air pump and the vent pipe, and the nitrogen enters multiple square tubes and is discharged from the air outlet on the rubber plate, thereby aerating the liquid flow. At the same time, as the barrel body rotates, the position where the nitrogen enters the liquid flow changes, thereby aerating various parts of the liquid flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the barrel in the utility model;

[0019] Figure 3 This is an exploded view of the spreading mechanism structure in the utility model;

[0020] Figure 4 This is a schematic diagram of the positional relationship between the square through pipe and the fixed block in the utility model.

[0021] In the figure: 100, tank body; 110, stirring rod; 111, stirring impeller; 200, rotating mechanism; 210, barrel body; 211, connecting port; 220, power box; 300, transducer; 310, amplitude rod; 400, spreading mechanism; 410, hollow shell; 411, discharge port; 412, ball bearing; 420, connecting cylinder; 421, connecting pipe; 430, motor box; 431, auger; 440, fan plate; 500, ventilation mechanism; 510, annular shell; 511, ventilation pipe; 520, fixing block; 530, square tube; 531, rubber plate; 540, rubber ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 In an embodiment of the present invention, a pretreatment tank includes:

[0024] The tank body 100, the rotating mechanism 200, the spreading mechanism 400 and the ventilation mechanism 500 for injecting nitrogen, the top surface of the tank body 100 is rotatably connected to the stirring rod 110, and the outer wall of the stirring rod 110 is fixedly sleeved with multiple stirring impellers 111, the rotating mechanism 200 is located inside the tank body 100, the rotating mechanism 200 includes a barrel body 210, and the center of the bottom surface of the barrel body 210 is rotatably connected to the inner bottom surface of the tank body 100, the spreading mechanism 400 is located at the outer wall of the stirring rod 110, and the ventilation mechanism 500 is located between the tank body 100 and the barrel body 210.

[0025] Specifically, liquid is added to the interior of the barrel body 210, and the raw materials are then scattered into the liquid by means of the spreading mechanism 400. A DC motor is provided on the top of the tank body 100 and is connected to the stirring rod 110 to drive the stirring rod 110 to rotate. The stirring rod 110 and the stirring impeller 111 are driven to rotate by starting the DC motor, so that the stirring impeller 111 stirs the liquid and the raw materials in the barrel body 210 for stirring. At the same time, nitrogen at a certain temperature is added to the water for aeration treatment by means of the ventilation mechanism 500, so that stirring and aeration treatment are simultaneously performed during the production of urea solution. Moreover, when the stirring rod 110 rotates, the barrel body 210 can be reversed so that the barrel body 210 drives the internal liquid to rotate synchronously, so that the liquid flow in the barrel body 210 produces a complex flow pattern, increases turbulence, and thus improves the mixing efficiency.

[0026] Example 1

[0027] like Figure 1 As shown, in this embodiment, a power box 220 is fixedly connected to the bottom surface of the tank body 100, and a drive motor is provided inside the power box 220. The motor shaft of the drive motor passes through the bottom surface of the tank body 100 and is fixedly connected to the center of the bottom surface of the barrel body 210.

[0028] In this embodiment, the barrel body 210 can be rotated by starting the driving motor, and the speed of the driving motor can be adjusted by the motor controller to coordinate with the speed of the DC motor.

[0029] like Figure 2-3 As shown, in this embodiment, the spreading mechanism 400 includes:

[0030] The hollow shell 410, the connecting tube 420 and the plurality of fan plates 440 are provided with circular holes on the top and bottom surfaces of the hollow shell 410, and ball bearings 412 are provided inside the two circular holes. The inner side walls of the two circular holes are fixedly sleeved with the outer rings of the bearings of the adjacent ball bearings 412, and the inner rings of the two ball bearings 412 are fixedly sleeved with the outer wall of the stirring rod 110. The outer wall of the hollow shell 410 is provided with a plurality of discharge ports 411. The bottom end of the connecting tube 420 is fixedly connected to the top surface of the hollow shell 410, and the interior of the connecting tube 420 is connected to the interior of the hollow shell 410. The top end of the connecting tube 420 is fixedly connected to the inner top surface of the tank body 100, and the outer wall of the connecting tube 420 is fixedly connected with a connecting pipe 421. One end of the connecting pipe 421 passes through the top surface of the tank body 100, and the connecting pipe 421 is equipped with an automatic hopper, and the discharge end of the automatic hopper is fixedly connected to the connecting pipe 421 through a conduit, and the interior of the connecting pipe 421 is connected to the interior of the connecting cylinder 420. One end of the multiple fan plates 440 is fixedly connected to the outer wall of the stirring rod 110, and the multiple fan plates 440 are all located between the two ball bearings 412, and the multiple fan plates 440 are all located inside the hollow shell 410. The top surface of the tank body 100 is fixedly connected to the motor box 430, and a power motor is provided inside the motor box 430. The motor shaft of the power motor passes through the top surface of the tank body 100 and is fixedly connected to the auger 431, and the auger 431 is located inside the connecting cylinder 420.

[0031] In a specific implementation, an automatic hopper is installed on the top of the tank body 100. When the urea solution is produced, the raw materials and the liquid are mixed in proportion, and the mixed raw materials are added to the automatic hopper. Then, the automatic hopper can be started to add the mixed raw materials to the connecting cylinder 420 through the connecting pipe 421 at regular intervals, so that the mixed raw materials are divided into multiple portions and added to the interior of the barrel body 210 in sequence. The power motor is started to drive the auger 431 to rotate, and the shaft of the auger 431 is connected to the shaft of the power motor. The auger 431 rotates. When it moves, the material inside the connecting cylinder 420 can be discharged into the hollow shell 410. At the same time, the auger 431 stirs the liquid flow inside the hollow shell 410 to mix it with urea preliminarily. At the same time, the stirring rod 110 drives multiple fan plates 440 to fan out the urea inside the hollow shell 410 together with the water flow through multiple discharge ports 411, so that the urea and the liquid flow in the barrel body 210 are preliminarily mixed in the hollow shell 410, and the preliminarily mixed liquid flow is fanned out to the inside of the barrel body 210 for mixing again, thereby improving the mixing effect.

[0032] like Figure 2-4 As shown, in this embodiment, the ventilation mechanism 500 includes:

[0033] The annular shell 510, the fixed block 520 and the plurality of square tubes 530, the outer wall of the annular shell 510 is fixedly connected to the inner wall of the tank body 100, the inner wall of the annular shell 510 is rotatably connected to the outer wall of the barrel body 210, the outer wall of the annular shell 510 is fixedly connected to a plurality of ventilation pipes 511, and one end of the plurality of ventilation pipes 511 passes through the outer wall of the tank body 100, the interior of the plurality of ventilation pipes 511 is connected to the interior of the annular shell 510, and the plurality of ventilation pipes 511 are equipped with air pumps, the air pump outlet end is fixedly connected to one end of the plurality of ventilation pipes 511 through a multi-way connector, the bottom surface of the fixed block 520 is fixedly connected to the center of the inner bottom surface of the barrel body 210, one end of the plurality of square tubes 530 is fixedly connected to the outer wall of the fixed block 520, and the plurality of A plurality of air outlets are provided on the top surface of each square tube 530, and the other ends of the plurality of square tubes 530 are fixedly connected to the inner wall of the barrel body 210. A plurality of connecting ports 211 are provided on the outer wall of the barrel body 210, and the plurality of connecting ports 211 correspond one-to-one to the plurality of square tubes 530. The interiors of the plurality of square tubes 530 are connected to the interiors of the corresponding connecting ports 211, and the interiors of the plurality of connecting ports 211 are connected to the interior of the annular shell 510. Two rubber rings 540 are fixedly sleeved on the outer wall of the barrel body 210, and the two rubber rings 540 are in contact with the inner top surface and the inner bottom surface of the annular shell 510 on opposite sides respectively. A rubber plate 531 is fixedly connected to the inner wall of any air outlet, and an air outlet is provided on the top surface of any rubber plate 531.

[0034] In a specific implementation, nitrogen is heated to a certain temperature and then added to the annular shell 510 through the air pump and the vent pipe 511. When the barrel 210 rotates, the annular shell 510 does not rotate, and the nitrogen enters the interior of the multiple square tubes 530 through the multiple communication ports 211. The diameters of the air outlet holes on the multiple rubber plates 531 are small, making it difficult for the liquid flow inside the barrel 210 to enter the interior of the square tubes 530. In addition, nitrogen in the square tubes 530 is continuously discharged from the air outlet holes into the barrel 210, so that Liquid does not easily enter the interior of the square tube 530, and when the nitrogen is discharged into the barrel body 210, it will come into contact with the liquid flow in the barrel body 210, and the liquid flow in the barrel body 210 will be aerated. In addition, the rotation of the barrel body 210 can drive multiple square tubes 530 to rotate synchronously around the fixed block 520. The rotation speed of the barrel body 210 is different from the rotation speed of the stirring rod 110, and different parts of the liquid flow in the barrel body 210 are aerated. In addition, the rubber ring 540 can prevent gas from leaking between the annular shell 510 and the barrel body 210.

[0035] Example 2

[0036] On the basis of the first embodiment, a plurality of horn rods 310 are provided inside the barrel body 210 to improve the mixing effect of the liquid and the raw material.

[0037] like Figure 1-2As shown, in this embodiment, a plurality of ultrasonic generators are provided on the top surface of the tank body 100, and the plurality of ultrasonic generators are fixedly connected to the transducer 300, the plurality of transducers 300 are fixedly connected to the top surface of the tank body 100, and the plurality of transducers 300 are fixedly connected to the amplitude rod 310, and the plurality of amplitude rods 310 pass through the top surface of the tank body 100 and are located inside the barrel body 210.

[0038] During specific implementation, multiple ultrasonic generators are started and vibrations are generated through multiple transducers 300, so that the transducers 300 drive adjacent amplitude transformers 310 to vibrate, and the amplitude transformers 310 are used to amplify the vibrations and transmit them to the liquid flow inside the barrel body 210, so that the liquid flow inside the barrel body 210 is mixed more evenly with the urea raw material due to the vibration.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0040] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pretreatment tank, characterized in that: include: The tank body (100) has a stirring rod (110) rotatably connected to the inner top surface, and a plurality of stirring impellers (111) are fixedly sleeved on the outer side wall of the stirring rod (110); A rotating mechanism (200) is located inside the tank body (100), the rotating mechanism (200) includes a barrel body (210), and the center of the bottom surface of the barrel body (210) is rotatably connected to the inner bottom surface of the tank body (100); a spreading mechanism (400), located on the outer side wall of the stirring rod (110); The ventilation mechanism (500) is located between the tank body (100) and the barrel body (210).

2. The pretreatment tank according to claim 1, characterized in that The bottom surface of the tank body (100) is fixedly connected to a power box (220), and a driving motor is provided inside the power box (220). The motor shaft of the driving motor passes through the bottom surface of the tank body (100) and is fixedly connected to the center of the bottom surface of the barrel body (210).

3. The pretreatment tank according to claim 2, characterized in that: The spreading mechanism (400) comprises: The hollow shell (410) has circular holes on its top and bottom surfaces, and ball bearings (412) are disposed inside the two circular holes. The inner sidewalls of the two circular holes are fixedly sleeved with the outer rings of the adjacent ball bearings (412), and the inner rings of the two ball bearings (412) are fixedly sleeved with the outer sidewall of the stirring rod (110). The outer sidewall of the hollow shell (410) is provided with a plurality of discharge ports (411); The connecting tube (420) has a bottom end fixedly connected to the top surface of the hollow shell (410), and the interior of the connecting tube (420) is connected to the interior of the hollow shell (410). The top of the connecting tube (420) is fixedly connected to the inner top surface of the tank body (100). The outer wall of the connecting tube (420) is fixedly connected to a connecting pipe (421), and one end of the connecting pipe (421) passes through the top surface of the tank body (100). The connecting pipe (421) is equipped with an automatic hopper, and the discharge end of the automatic hopper is fixedly connected to the connecting pipe (421) through a conduit. The interior of the connecting pipe (421) is connected to the interior of the connecting tube (420). One end of each of the plurality of fanning plates (440) is fixedly connected to the outer wall of the stirring rod (110), and each of the plurality of fanning plates (440) is located between the two ball bearings (412), and each of the plurality of fanning plates (440) is located inside the hollow shell (410).

4. The pretreatment tank according to claim 3, characterized in that: The top surface of the tank body (100) is fixedly connected to a motor box (430), and a power motor is provided inside the motor box (430). The motor shaft of the power motor passes through the top surface of the tank body (100) and is fixedly connected to an auger (431), and the auger (431) is located inside the connecting cylinder (420).

5. The pretreatment tank according to claim 2, characterized in that: The ventilation mechanism (500) comprises: The outer wall of the annular shell (510) is fixedly sleeved with the inner wall of the tank body (100), and the inner wall of the annular shell (510) is rotatably sleeved with the outer wall of the barrel body (210). The outer wall of the annular shell (510) is fixedly connected with a plurality of vent pipes (511), and one end of each of the plurality of vent pipes (511) passes through the outer wall of the tank body (100). The interiors of the plurality of vent pipes (511) are connected with the interior of the annular shell (510), and the plurality of vent pipes (511) are matched with an air pump, and the air outlet end of the air pump is fixedly connected with one end of each of the plurality of vent pipes (511) through a multi-way connector. A fixed block (520), the bottom surface of which is fixedly connected to the center of the inner bottom surface of the barrel body (210); Multiple square tubes (530) are fixedly connected at one end to the outer wall of the fixed block (520), multiple air outlets are provided on the top surfaces of the multiple square tubes (530), and the other ends of the multiple square tubes (530) are fixedly connected to the inner wall of the barrel body (210), the outer wall of the barrel body (210) is provided with multiple communication ports (211), and the multiple communication ports (211) correspond one-to-one to the multiple square tubes (530), the interiors of the multiple square tubes (530) are connected to the interiors of the corresponding communication ports (211), and the interiors of the multiple communication ports (211) are connected to the interior of the annular shell (510).

6. The pretreatment tank according to claim 5, characterized in that: Two rubber rings (540) are fixedly sleeved on the outer wall of the barrel body (210), and the two rubber rings (540) are in contact with the inner top surface and inner bottom surface of the annular shell (510) on opposite sides respectively. A rubber plate (531) is fixedly connected to the inner wall of any air outlet, and an air outlet hole is opened on the top surface of any rubber plate (531).

7. The pretreatment tank according to claim 1, characterized in that: The top surface of the tank body (100) is provided with a plurality of ultrasonic generators, and the plurality of ultrasonic generators are fixedly connected to a transducer (300), the plurality of transducers (300) are fixedly connected to the top surface of the tank body (100), and the plurality of transducers (300) are fixedly connected to a horn (310), and the plurality of horn (310) passes through the top surface of the tank body (100) and is located inside the barrel body (210).

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