Corrosion-resistant stirring equipment

Abstract

The invention discloses corrosion-resistant stirring equipment. The corrosion-resistant stirring equipment comprises an equipment main body, a stirring mechanism and a driving mechanism. A stirring cavity is formed in the equipment main body, a communicating opening is formed in the top of the equipment main body, a discharging opening is formed in the bottom of the equipment main body, the communicating opening and the discharging opening are both communicated with the stirring cavity, and materials enter the stirring cavity from the communicating opening and are discharged from the discharging opening. The stirring mechanism comprises a rotating shaft and at least one stirring blade, the stirring blade is located in the stirring cavity and assembled on the rotating shaft, the stirring blade comprises a blade body and a wear-resistant part, one end of the blade body is connected to the rotating shaft, and the wear-resistant part is overlaid on the outer surface of the blade body; and the wear-resistant part is used for bearing friction and impact brought by flowing materials. When the driving mechanism drives the rotating shaft to rotate, the stirring blades rotate in the stirring cavity.

Description

Technical Field

[0001] This application relates to the field of agitator technology, and more specifically to a corrosion-resistant agitator. Background Technology

[0002] In desulfurization wastewater, agitators are required to prevent sedimentation. However, desulfurization wastewater is highly corrosive. Currently, the agitator blades are made of stainless steel. With prolonged use, the desulfurization wastewater will corrode the agitator blades, and the constant impact during agitation will cause plastic deformation of the blades, thus affecting the agitator's efficiency.

[0003] To improve the mixing effect of agitators, some agitators are equipped with stoppers on the inner wall of the mixing chamber to disrupt the eddy current. However, if the angle between the stopper and the mixing chamber is too small, desulfurization wastewater can easily remain, leading to local scaling and corrosion of the agitator.

[0004] To solve the above-mentioned technical problems, this application proposes a corrosion-resistant mixing device. Summary of the Invention

[0005] One advantage of this application is that it provides corrosion-resistant mixing equipment by depositing tungsten carbide material on the outer surface of the blade body to form a wear-resistant part, which can withstand the impact and friction of the flowing material, thereby protecting the blade body.

[0006] To solve the above-mentioned technical problems and achieve at least one advantage of this application, this application provides a corrosion-resistant mixing device, said corrosion-resistant mixing device comprising:

[0007] The equipment body forms a mixing chamber. The top of the equipment body is provided with a communication port, and the bottom of the equipment body is provided with a discharge port. Both the communication port and the discharge port are connected to the mixing chamber. The material enters the mixing chamber from the communication port, and the material in the mixing chamber is discharged from the discharge port.

[0008] A stirring mechanism includes a rotating shaft and at least one stirring blade. The stirring blade is located in the stirring chamber and is assembled to the rotating shaft. The stirring blade includes a blade body and a wear-resistant component. One end of the blade body is connected to the rotating shaft, and the wear-resistant component is welded to the outer surface of the blade body. The wear-resistant component is used to withstand the friction and impact brought by the flowing material.

[0009] A drive mechanism is provided, wherein the rotating shaft is connected to the drive mechanism, and when the drive mechanism drives the rotating shaft to rotate, the stirring blades rotate within the stirring chamber.

[0010] According to one embodiment of this application, the wear-resistant component is formed by welding tungsten carbide material onto the surface of the blade body.

[0011] According to one embodiment of this application, the stirring blade is vertically divided into a high end portion and a low end portion, wherein the low end portion is lower than the high end portion; the thickness of the high end portion gradually decreases along the direction extending from the low end portion to the high end portion, and the thickness of the wear-resistant part gradually decreases along the direction extending from the low end portion to the high end portion.

[0012] According to one embodiment of this application, the main body of the device has a mounting hole that communicates with the stirring chamber. The rotating shaft extends into the stirring chamber through the mounting hole and extends out of the stirring chamber to form a transmission end. The transmission end is connected to the drive mechanism. The corrosion-resistant stirring device also includes a sealing mechanism. The sealing mechanism is installed at the gap between the mounting hole and the rotating shaft and is used to seal the gap between the rotating shaft and the main body of the device.

[0013] According to one embodiment of this application, the sealing mechanism includes a rotating ring assembly, a stationary ring assembly, an elastic compensation mechanism, and a friction ring. The stationary ring assembly is installed on the device body, and both the rotating ring assembly and the stationary ring assembly are sleeved on the rotating shaft. The rotating shaft drives the rotating ring assembly to rotate synchronously. The friction ring is installed on one end face of the rotating ring assembly, and the friction ring is also installed on the end face of the stationary ring assembly facing the rotating ring assembly. The rotating ring assembly is connected to the elastic compensation mechanism, and the two friction rings remain in contact with each other under the elastic force of the elastic compensation mechanism. The friction rings are made of silicon carbide material. The sealing mechanism also includes at least two sealing rings, wherein at least one sealing ring is installed between the stationary ring assembly and the device body, and at least one sealing ring is installed between the rotating ring assembly and the rotating shaft. The sealing rings are made of tetrafluoroethylene material.

[0014] According to one embodiment of this application, the stirring blade has a first end near the rotating shaft and a second end away from the rotating shaft. The stirring blade extends radially from the first end along the rotating shaft to form the second end. The cross-sectional area of ​​the second end gradually decreases along its own extension direction, and the second end is streamlined.

[0015] According to one embodiment of this application, the corrosion-resistant mixing device further includes at least one cleaning mechanism, which is installed inside the mixing chamber. The cleaning mechanism is connected to a cleaning liquid storage device via a pipe, and the cleaning liquid is introduced into the mixing chamber through the cleaning mechanism via the pipe to clean and remove materials adhering to the mixing chamber and the mixing mechanism.

[0016] According to one embodiment of this application, the rotating shaft is made of duplex stainless steel; the blade body is made of duplex stainless steel.

[0017] According to one embodiment of this application, the corrosion-resistant stirring device further includes a stop member installed in the stirring chamber, and the stop member at least partially protrudes from the inner wall of the stirring chamber. The stop member is used to interfere with the flow direction of the material being stirred and rotated by the stirring mechanism.

[0018] According to one embodiment of this application, each of the stop members has a blocking portion and an arc-shaped plate connected to the blocking portion. The blocking portion extends into the stirring chamber, and the edge of the arc-shaped plate smoothly abuts against the inner wall of the stirring chamber, so that the inner wall of the stirring chamber and the arc-shaped plate smoothly transition. Attached Figure Description

[0019] Figure 1 A schematic diagram of the corrosion-resistant mixing device described in this application is shown.

[0020] Figure 2 A cross-sectional view of the corrosion-resistant mixing device described in this application is shown at an angle.

[0021] Figure 3 It shows Figure 2 A schematic diagram of the structure of part A.

[0022] Figure 4 A schematic diagram of one embodiment of the corrosion-resistant mixing device described in this application is shown.

[0023] Figure 5 A schematic diagram of another embodiment of the corrosion-resistant mixing device described in this application is shown.

[0024] Figure 6 It shows Figure 2 A schematic diagram of the structure of part B.

[0025] Figure 7 This is a cross-sectional view of the corrosion-resistant mixing device described in this application from another angle. Detailed Implementation

[0026] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0027] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0028] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0029] refer to Figures 1 to 7 A preferred embodiment of the corrosion-resistant mixing device according to this application will be described in detail below.

[0030] refer to Figures 1 to 2 Specifically, the corrosion-resistant mixing equipment includes a main body 10, a mixing mechanism 20, and a driving mechanism 30.

[0031] The main body 10 of the device forms a stirring chamber 101. A connecting port 102 is provided at the top of the main body 10, communicating with the stirring chamber 101. Material enters the stirring chamber 101 through the connecting port 102. The stirring mechanism 20 includes a rotating shaft 21 and at least one stirring blade 22. The rotating shaft 21 is connected to the driving mechanism 30, and the stirring blade 22 is located in the stirring chamber 101 and assembled onto the rotating shaft 21. When the driving mechanism 30 drives the rotating shaft 21 to rotate, the stirring blade 22 rotates within the stirring chamber 101, causing the material within the stirring chamber 101 to be stirred evenly.

[0032] refer to Figure 2 and Figure 3 Preferably, the stirring blade 22 includes a blade body 221 and a wear-resistant component 222. One end of the blade body 221 is connected to the rotating shaft 21, and the wear-resistant component 222 is attached to the outer surface of the blade body 221. The wear-resistant component 222 is used to withstand the friction and impact caused by the material flow, thereby protecting the blade body 221.

[0033] In one embodiment, the wear-resistant component 222 is formed by welding tungsten carbide material onto the surface of the blade body 221. The wear-resistant component 222 has a higher hardness than the blade body 221. During stirring, the wear-resistant component 222 of the stirring blade 22 comes into direct contact with the material to prevent the blade body 221 from being worn by the material. As a result, the wear-resistant component 222 can extend the service life of the stirring blade 22, thereby reducing the maintenance frequency of the corrosion-resistant stirring equipment.

[0034] Preferably, the wear-resistant component 222 forms an insertion groove, and the blade body 221 is fitted into the insertion groove formed by the wear-resistant component 222. The wear-resistant component 222 and the blade body 221 are designed to be separate, so that the wear-resistant component 222 can be replaced.

[0035] In one embodiment, an external thread is formed at one end of the blade body 221 near the rotating shaft 21, and an internal thread is formed on the inner wall of the insertion groove formed by the wear-resistant member 222. The blade body 221 is threadedly connected to the wear-resistant member 222, and the blade body 221 is cylindrical.

[0036] refer to Figure 4 As deformable, the wear-resistant part 222 has a connecting lug at one end near the rotating shaft 21. The connecting lug fits against the outer peripheral wall of the rotating shaft 21. Screws are connected to the connecting lug and the rotating shaft 21 to fix the wear-resistant part 222 and the rotating shaft 21. The blade body 221 is cylindrical or straight.

[0037] It is worth mentioning that the blade body 221 is made of duplex stainless steel, such as 2205 duplex stainless steel or 2507 duplex stainless steel. Since duplex stainless steel has good corrosion resistance, it can extend the service life of the stirring blade 22.

[0038] Also preferably, the rotating shaft 21 is made of duplex stainless steel, such as 2205 duplex stainless steel or 2507 duplex stainless steel, thereby extending the service life of the rotating shaft 21.

[0039] Preferably, the bottom of the main body 10 of the equipment is further provided with a discharge port 103, which is connected to the mixing chamber 101, so that the material in the mixing chamber 101 can be discharged from the discharge port 103 under the action of gravity.

[0040] Preferably, the rotating shaft 21 extends vertically, and the stirring mechanism 20 is provided with multiple stirring blades 22, which are distributed at intervals along the circumferential direction of the rotating shaft 21.

[0041] In one embodiment, the stirring blade 22 has a first end 2201 near the rotating shaft 21 and a second end 2202 away from the rotating shaft 21. The stirring blade 22 extends radially from the first end 2201 along the rotating shaft 21 to form the second end 2202, thereby increasing the contact area between the stirring blade 22 and the material, and thus improving the stirring effect of the stirring mechanism 20.

[0042] Preferably, the cross-sectional area of ​​the second end 2202 gradually decreases along its extending direction, making the second end 2202 streamlined. This reduces the resistance between the stirring blade 22 and the material during stirring, thereby reducing wear on the stirring blade 22 and extending its service life. Similarly, it can be understood that the thickness of the wear-resistant part 222 at the end away from the rotating shaft 21 gradually decreases along the extending direction of the stirring blade 22. Since the wear on the second end 2202 is less, the amount of raw material required to manufacture the end of the wear-resistant part 222 away from the rotating shaft 21 can be reduced, thus lowering the manufacturing cost of the stirring blade 22.

[0043] refer to Figure 5 Preferably, the stirring blade 22 is vertically divided into a high end portion 2203 and a low end portion 2204, wherein the low end portion 2204 is lower than the high end portion 2203; the thickness of the high end portion 2203 gradually decreases along the direction extending from the low end portion 2203 to the high end portion 2204, and the thickness of the wear-resistant part 222 gradually decreases along the direction extending from the low end portion 2204 to the high end portion 2203, that is, the high end portion 2203 has a shape that is narrow at the top and wide at the bottom. In this way, after the stirring blade 22 stops operating, the material adhering to the outer surface of the stirring blade 22 can drip down along the outer peripheral wall of the high end portion 2203 under the action of gravity, thereby reducing the material remaining on the surface of the stirring blade 22 and thus improving the corrosion resistance of the stirring blade 22.

[0044] It is understood that the thickness of the wear-resistant part 222 gradually decreases along the direction extending from the lower end 2204 to the upper end 2203. The material adhering to the upper end 2203 is less than the material adhering to the lower end 2204. Therefore, the raw materials for making the upper end 2203 of the wear-resistant part 222 can be reduced, thereby reducing the manufacturing cost of the stirring blade 22.

[0045] Furthermore, the main body 10 of the equipment has a mounting hole 104, which is connected to the stirring chamber 101. The rotating shaft 21 extends into the stirring chamber 101 through the mounting hole 104 and extends out of the stirring chamber 101 to form a transmission end 211. The transmission end 211 is connected to the drive mechanism 30 to prevent the drive mechanism 30 from contacting the material, thereby protecting the drive mechanism 30.

[0046] As an example, the drive mechanism 30 is implemented to include a motor.

[0047] refer to Figure 6 Preferably, the corrosion-resistant mixing equipment further includes a sealing mechanism 40, which is installed at the gap between the mounting hole 104 and the rotating shaft 21 to seal the gap between the rotating shaft 21 and the equipment body 10 to prevent material leakage.

[0048] Specifically, the sealing mechanism 40 includes a rotating ring assembly 41, a stationary ring assembly 42, an elastic compensation mechanism 43, and a friction ring 44. The stationary ring assembly 42 is mounted on the main body 10 of the equipment, and both the rotating ring assembly 41 and the stationary ring assembly 42 are sleeved on the rotating shaft 21, wherein the rotating shaft 21 drives the rotating ring assembly 41 to rotate synchronously. The friction ring 44 is mounted on one end face of the rotating ring assembly 41, and the friction ring 44 is also mounted on the end face of the stationary ring assembly 42 facing the rotating ring assembly 41. The rotating ring assembly 41 is connected to the elastic compensation mechanism 43, and the two friction rings 44 are kept in contact with each other under the elastic force of the elastic compensation mechanism 43, so that the rotating ring assembly 41 and the stationary ring assembly 42 are sealed together to prevent material leakage.

[0049] In one embodiment, the friction ring 44 is made of silicon carbide material, which improves the wear resistance of the sealing mechanism 40 due to its high hardness.

[0050] As an example, the elastic compensation mechanism 43 can be implemented as a bellows.

[0051] Preferably, the sealing mechanism 40 further includes at least two sealing rings 45, wherein at least one sealing ring 45 is installed between the stationary ring assembly 42 and the equipment body 10, and at least one sealing ring 45 is installed between the moving ring assembly 41 and the rotating shaft 21 to prevent material leakage.

[0052] In one embodiment, the sealing ring 45 is made of tetrafluoroethylene (PTFE), which has good corrosion resistance, thus the sealing mechanism 40 also has good corrosion resistance.

[0053] refer to Figure 2Furthermore, the corrosion-resistant mixing equipment also includes at least one cleaning mechanism 50. The cleaning mechanism 50 is installed inside the mixing chamber 101 and is connected to a cleaning liquid storage device via a pipe. The cleaning liquid is introduced into the mixing chamber 101 through the cleaning mechanism 50 via the pipe to remove material adhering to the mixing chamber 101 and the mixing mechanism 20, so as to prevent residual material from corroding the mixing mechanism 20 and the equipment body 10.

[0054] Preferably, the cleaning mechanism 50 is installed on the top of the equipment body 10, so that the cleaning liquid is sprayed from top to bottom onto the inner wall of the stirring chamber 101 and the stirring mechanism 20, thereby improving the cleanliness of the corrosion-resistant stirring equipment.

[0055] As an example, the cleaning mechanism 50 is implemented as a high-pressure nozzle.

[0056] Preferably, the rotating shaft 21 forms a flow channel 2101 along its own axial direction, and a plurality of liquid outlet holes 2102 communicating with the flow channel 2101 are formed radially on the rotating shaft 21. One end of the rotating shaft 21 away from the drive mechanism 30 extends out of the stirring chamber 101 and is fitted with a rotary joint. The rotary joint is connected to a liquid supply device via a pipe, so that the liquid supplied by the liquid supply device is guided through the pipe to the flow channel 2101 and enters the stirring chamber 101 from the liquid outlet holes 2102. It can be understood that the cleaning liquid sprayed by the cleaning mechanism 50 flows into the stirring chamber 101, the rotating shaft 21 extends below the surface of the cleaning liquid, and the cleaning liquid flushed into the stirring chamber 101 from the liquid outlet holes 2102 washes the material on the inner wall of the stirring chamber 101 and the surface of the stirring mechanism 20, improving the cleaning effect.

[0057] Preferably, the liquid outlet 2102 is located close to the root of the stirring blade 22, so that the liquid sprayed from the liquid outlet 2102 is directly sprayed onto the outer surface of the stirring blade 22, in order to prevent material residue at the connection between the stirring blade 22 and the rotating shaft 21 and improve the cleanliness of the equipment.

[0058] refer to Figure 7 Furthermore, the corrosion-resistant mixing equipment also includes a stop 60.

[0059] The stop member 60 is installed in the stirring chamber 101, and the stop member 60 protrudes at least partially from the inner wall of the stirring chamber 101. The stop member 60 is used to interfere with the flow direction of the material being stirred and rotated by the stirring mechanism 20, so as to avoid the generation of eddies and make the material more fully mixed.

[0060] Preferably, the corrosion-resistant stirring device includes a plurality of the stop members 60, which are spaced apart and installed on the inner sidewall of the stirring chamber 101.

[0061] In a preferred embodiment, each of the stop members 60 includes a blocking portion 61 and an arc-shaped plate 62 connected to the blocking portion 61, with the blocking portion 61 extending into the mixing chamber 101. The edge of the arc-shaped plate 62 is horizontally aligned with the inner wall of the mixing chamber 101, resulting in a smooth transition between the inner wall of the mixing chamber 101 and the arc-shaped plate 62. This eliminates dead corners between the inner wall of the mixing chamber 101 and the blocking portion 61, making it less likely for materials to remain in the mixing chamber 101 and facilitating cleaning. This improves the corrosion resistance of the equipment while ensuring the mixing effect.

[0062] In one embodiment, the stop member 60 and the device body 10 are designed as separate parts, and the stop member 60 can be installed on the device body 10 by welding or by means of fasteners.

[0063] In another embodiment, the stop 60 and the device body 10 are integrally formed by casting.

[0064] Furthermore, a drain port 105 communicating with the stirring chamber 101 is formed at the bottom of the main body 10 of the equipment, and the cleaning liquid after cleaning is discharged from the stirring chamber 101 through the drain port 105.

[0065] Those skilled in the art should understand that the embodiments of this application described above and shown in the accompanying drawings are merely examples and do not limit the scope of this application. The advantages of this application have been fully and effectively implemented. The functional and structural principles of this application have been demonstrated and explained in the embodiments, and any variations or modifications can be made to the implementation of this application without departing from the stated principles.

Claims

1. A corrosion-resistant mixing device, characterized in that, The corrosion-resistant mixing equipment includes: The equipment body forms a mixing chamber. The top of the equipment body is provided with a communication port, and the bottom of the equipment body is provided with a discharge port. Both the communication port and the discharge port are connected to the mixing chamber. The material enters the mixing chamber from the communication port, and the material in the mixing chamber is discharged from the discharge port. A stirring mechanism includes a rotating shaft and at least one stirring blade. The stirring blade is located in the stirring chamber and is assembled to the rotating shaft. The stirring blade includes a blade body and a wear-resistant component. One end of the blade body is connected to the rotating shaft, and the wear-resistant component is welded to the outer surface of the blade body. The wear-resistant component is used to withstand the friction and impact brought by the flowing material. A drive mechanism is provided, wherein the rotating shaft is connected to the drive mechanism, and when the drive mechanism drives the rotating shaft to rotate, the stirring blades rotate within the stirring chamber.

2. The corrosion-resistant mixing equipment according to claim 1, characterized in that, The wear-resistant component is formed by welding tungsten carbide material onto the surface of the blade body.

3. The corrosion-resistant mixing equipment according to claim 1, characterized in that, The stirring blade is vertically divided into a high end and a low end, wherein the low end is lower than the high end; the thickness of the high end gradually decreases along the direction extending from the low end to the high end, and the thickness of the wear-resistant part gradually decreases along the direction extending from the low end to the high end.

4. The corrosion-resistant mixing equipment according to claim 1, characterized in that, The main body of the equipment has a mounting hole that communicates with the stirring chamber. The rotating shaft extends into the stirring chamber through the mounting hole and extends out of the stirring chamber to form a transmission end. The transmission end is connected to the drive mechanism. The corrosion-resistant stirring equipment also includes a sealing mechanism. The sealing mechanism is installed at the gap between the mounting hole and the rotating shaft and is used to seal the gap between the rotating shaft and the main body of the equipment.

5. The corrosion-resistant mixing equipment according to claim 4, characterized in that, The sealing mechanism includes a rotating ring assembly, a stationary ring assembly, an elastic compensation mechanism, and a friction ring. The stationary ring assembly is mounted on the main body of the equipment, and both the rotating ring assembly and the stationary ring assembly are sleeved on the rotating shaft. The rotating shaft drives the rotating ring assembly to rotate synchronously. The friction ring is mounted on one end face of the rotating ring assembly, and the friction ring is also mounted on the end face of the stationary ring assembly facing the rotating ring assembly. The rotating ring assembly is connected to the elastic compensation mechanism, and the two friction rings remain in contact with each other under the elastic force of the elastic compensation mechanism. The friction rings are made of silicon carbide material. The sealing mechanism also includes at least two sealing rings, wherein at least one sealing ring is installed between the stationary ring assembly and the main body of the equipment, and at least one sealing ring is installed between the rotating ring assembly and the rotating shaft. The sealing rings are made of tetrafluoroethylene material.

6. The corrosion-resistant mixing equipment according to claim 4, characterized in that, The stirring blade has a first end near the rotating shaft and a second end away from the rotating shaft. The stirring blade extends radially from the first end along the rotating shaft to form the second end. The cross-sectional area of ​​the second end gradually decreases along its extension direction, and the second end is streamlined.

7. The corrosion-resistant mixing equipment according to claim 1, characterized in that, The corrosion-resistant mixing equipment also includes at least one cleaning mechanism, which is installed inside the mixing chamber. The cleaning mechanism is connected to a cleaning liquid storage device through a pipe, and the cleaning liquid is introduced into the mixing chamber through the cleaning mechanism to clean and remove the material adhering to the mixing chamber and the mixing mechanism.

8. The corrosion-resistant mixing equipment according to claim 7, characterized in that, The rotating shaft is made of duplex stainless steel; the blade body is made of duplex stainless steel.

9. The corrosion-resistant mixing device according to any one of claims 1 to 8, characterized in that, The corrosion-resistant mixing device also includes a stop member installed in the mixing chamber, and the stop member at least partially protrudes from the inner wall of the mixing chamber. The stop member is used to interfere with the flow direction of the material being rotated by the mixing mechanism.

10. The corrosion-resistant mixing device according to claim 9, characterized in that, Each of the stop members has a blocking portion and an arc-shaped plate connected to the blocking portion. The blocking portion extends into the stirring chamber, and the edge of the arc-shaped plate smoothly abuts against the inner wall of the stirring chamber, so that the inner wall of the stirring chamber and the arc-shaped plate smoothly transition.

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