Paddle box and stirrer

Abstract

The utility model provides a paddle box and a stirrer, and relates to the technical field of stirrers. The paddle box comprises a container tank and a flexible supporting device, and the container tank is provided with a top surface opening; the flexible supporting device comprises a main supporting body and a connecting body, and the main supporting body is connected to the inner bottom of the container tank through the connecting body; the main supporting body is provided with a main shaft mounting position, and the main shaft mounting position is used for being assembled with a stirring shaft in a matched mode and can drive the stirring shaft to elastically reciprocate in the axial direction of the stirring shaft. By adopting the scheme, the deflection of a long shaft can be reduced, and a buffering and damping effect can be provided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of mixers, and in particular to a paddle box and a mixer. Background Art

[0002] In the traditional flue gas desulfurization and denitrification industry, the accident paddle box is a specially set emergency equipment when a problem occurs in a certain link of the entire desulfurization and denitrification system. Therefore, it is large in size and has a high cylinder and deep liquid. It is often difficult to clean up the lime slurry afterwards, and the manual cleaning is intensive and time-consuming. Therefore, the industry generally uses side-entry mixers for stirring the accident paddle box. It often takes 3 to 6 side-stirring tanks, and it involves mechanical seals, resulting in a high failure rate of side stirring. In the market, most side-entry mixers are imported and very expensive. Utility Model Content

[0003] The present disclosure provides a paddle box and a mixer to at least solve the above technical problems existing in the prior art.

[0004] According to a first aspect of the present disclosure, there is provided a paddle box, comprising: a container tank and a flexible support device, wherein the container tank has a top opening; the flexible support device comprises a main support body and a connecting body, the main support body is connected to the inner bottom of the container tank via the connecting body; the main support body has a main shaft mounting position, the main shaft mounting position is used for assembly with a stirring shaft, and can drive the stirring shaft to perform elastic reciprocating movement along its own axial direction.

[0005] In one possible embodiment, the main support body includes a support, a support seat and a base, the main shaft mounting position is formed on the top surface of the support along its own axial direction, the support is connected to the base through the support seat, and the support and the support seat are elastically abutted along their own axial direction; the base is connected to the bottom of the container tank through the connecting body.

[0006] In one embodiment, the main support body also includes a first elastic member, the support includes an upper support and a lower support, the lower support is mounted under the upper support; the support seat is mounted under the lower support and at least partially extends out of the bottom of the lower support; the first elastic member is located in the lower support and is connected between the upper support and the support seat.

[0007] In one possible implementation manner, the support seat extends into the base and is inserted into the base, and a safety height gap is left between the bottom surface of the lower support and the base.

[0008] In one possible implementation manner, the blade box further comprises a connecting chuck, and the connecting chuck is clamped at a connection between the upper support and the lower support.

[0009] In one embodiment, the upper support includes a first shaft body and a second shaft body connected to the bottom of the first shaft body, the radial size of the second shaft body is larger than the radial size of the first shaft body, and a first step is formed at the connection between the first shaft body and the second shaft body; the blade box also includes a bearing, and the bearing is mounted on the first step.

[0010] In one embodiment, the lower support includes a third axis body and a fourth axis body extending from the top surface of the third axis body, the outer periphery of the top surface of the fourth axis body and the outer periphery of the bottom surface of the second axis body are both extended with edge structures, and the connecting chuck is mounted on the edge structure; the side surface of the fourth axis body has at least one through hole along its own radial direction.

[0011] In one embodiment, the support seat includes a first main body and a second main body protruding from the top surface of the first main body, and an installation hole is provided between the second main body and the first main body along the axial direction, and the lower support is installed on the base through a positioning member and the installation hole; the first elastic member is pressed and connected between the bottom surface of the fourth shaft and the top surface of the second main body.

[0012] According to the second aspect of the present disclosure, a mixer is also provided, comprising the aforementioned paddle box, and also comprising a motor, a gear box reducer transmission-connected to the motor, a double-pivot bracket for supporting the gear box reducer, a stirring shaft and a spear-shaped agitator, wherein the stirring shaft is assembled in combination with the flexible support device; the double-pivot bracket comprises a bracket body, wherein two fulcrum positions are arranged at intervals in the middle of the bracket body along its own axial direction, and the stirring shaft is assembled in combination with a coupling or a bearing at the two fulcrum positions and rotates synchronously.

[0013] In one possible embodiment, the mixer further comprises a plurality of groups of ridge baffles and a suspended support frame, wherein the plurality of groups of ridge baffles are arranged in an interlaced manner along the longitudinal direction of the mixing shaft, and the suspended support frame is used to suspend the mixer from the ground.

[0014] The paddle box and the matching mixer disclosed in the present invention. On the one hand, it can replace the side stirring to achieve the purpose of industrial stirring. On the other hand, the design features of this top-entry mixer include a suspended design. The reducer adopts a gear box form. Compared with the traditional spur gear or helical gear reducer, it has a lower cost and more reliable performance. A flexible bottom support is added to the bottom; the frame adopts a double-fulcrum design, which can reduce the deflection of the long shaft during the stirring and rotation process, and at the same time, it can convert the circumferential kinetic energy of the shaking into elastic potential energy along the longitudinal direction and release it.

[0015] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0017] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0018] Figure 1 A schematic diagram of the shaft side structure of the blade box according to an embodiment of the present disclosure is shown;

[0019] Figure 2 A schematic diagram of the axial structure of the main support body of the blade box according to an embodiment of the present disclosure is shown;

[0020] Figure 3 A schematic cross-sectional structure diagram of the main support body of an embodiment of the present disclosure is shown;

[0021] Figure 4 A schematic diagram of the axial structure of the mixer according to an embodiment of the present disclosure is shown.

[0022] Description of the numbers in the figure:

[0023] 1-upper support; 2-lower support; 3-support seat; 4-base; 5-first elastic member; 6-connecting chuck; 7-safety height gap; 8-bearing; 11-first axis; 12-second axis; 13-first step; 21-third axis; 22-fourth axis; 23-edge structure; 221-through hole; 31-first body; 32-second body; 33-installation hole; 41-reinforcement rib structure. 9-container tank; 10-main support body; 14-connector; 15-support plane; 16-motor; 17-gearbox reducer; 18-double-pivot bracket; 19-stirring shaft; 20-dragon ridge baffle; 24-suspended support chassis. DETAILED DESCRIPTION

[0024] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0025] Reference Figure 1-Figure 3 , which is a schematic diagram of the structure of a blade box and an internal main support body 10 according to an embodiment of the present disclosure, with reference to Figure 4, is a schematic diagram of the shaft side structure of a mixer provided by an embodiment of the present disclosure. Figure 1-Figure 4 A paddle box provided in an embodiment of the present disclosure includes a container tank 9 and a flexible support device, wherein the container tank 9 has a top opening; the flexible support device includes a main support body 10 and a connecting body 14, and the main support body 10 is connected to the bottom of the container tank 9 through the connecting body 14; the main support body 10 has a main shaft mounting position, and the main shaft mounting position is used for matching assembly with the stirring shaft 19, and can drive the stirring shaft 19 to perform elastic reciprocating movement along its own axial direction.

[0026] The paddle box of the embodiment of the present disclosure is provided with a flexible supporting device on its inner bottom surface, which is assembled with the stirring shaft 19 through the main supporting body 10. At the same time, the main supporting body 10 can also drive the stirring shaft 19 to perform elastic reciprocating movement along its own axial direction, and can convert the circumferential kinetic energy of the shaking into elastic potential energy along the longitudinal direction and release it, so as to further reduce the deflection of the long axis during the stirring rotation process.

[0027] Specifically, the main support body 10 includes a support, a support seat 3 and a base 4. The main shaft mounting position is formed on the top surface of the support along its own axial direction. The support is connected to the base 4 through the support seat 3. The support and the support seat 3 are elastically abutted along their own axial direction; the base 4 is connected to the bottom of the container tank 9 through a connector 14. Exemplarily, the main support body 10 is connected to the top surface of the support plane 15, one end of the connector 14 is connected to the bottom surface of the support plane 15, and the other end of the connector 14 is connected to the bottom of the container tank 9, and multiple connectors 14 are provided, and multiple connectors 14 are arranged at intervals along the circumference of the bottom of the support plane 15. Exemplarily, the main support body 10 also includes a first elastic member 5, the support includes an upper support 1 and a lower support 2, and the lower support 2 is mounted below the upper support 1; the support seat 3 is mounted below the lower support 2 and at least partially extends out of the bottom of the lower support 2; the first elastic member 5 is located in the lower support 2 and connected between the upper support 1 and the support seat 3.

[0028] Specifically, the support of the embodiment of the present disclosure includes an upper support 1 and a lower support 2, and the upper support 1 and the lower support 2 are assembled and sleeved along their own axial direction. Exemplarily, the upper support 1 and the lower support 2 are welded and connected, or the upper support 1 and the lower support 2 are integrally formed. Considering the assembly position and connection relationship of each structure, the lower support 2 is sleeved under the upper support 1, the support seat 3 is sleeved under the lower support 2, and at least partially extends out of the bottom of the lower support 2, the first elastic member 5 is located in the lower support 2, and is connected between the upper support 1 and the support seat 3, the support seat 3 extends into the base 4, and is sleeved in the base 4, and the aforementioned safety height gap 7 is left between the bottom surface of the lower support 2 and the base 4.

[0029] To further describe the specific scheme of the blade box, the blade box also includes a connecting chuck 6, which is clamped at the connection between the upper support 1 and the lower support 2. The connecting chuck 6 adopts a standard device, and different types of connecting chucks 6 can be selected according to the radial dimensions of the upper support 1 and the lower support 2. The connecting chuck 6 can provide a clamping force in the radial direction for the connection between the upper support 1 and the lower support 2 and the rotating shaft. At the same time, it is very convenient to disassemble the connecting chuck 6, which is convenient for assembling and disassembling the rotating shaft and the blade box, and can be extended to the bottom of the rotating tank for assembly and disassembly.

[0030] It should be noted that the use of the connecting chuck 6 in the embodiment of the present disclosure can be understood as the use of a chuck interface between the upper support 1 and the lower support 2, which is convenient for disassembly and assembly operations on the one hand, and simple and practical on the other hand, and can quickly install and replace wearing parts.

[0031] In addition, the upper support 1 is composed of two parts. Specifically, the upper support 1 includes a first shaft 11 and a second shaft 12 connected to the lower part of the first shaft 11. The radial dimensions of the two shafts are larger than the radial dimensions of the first shaft 11. The connection between the first shaft 11 and the second shaft 12 forms a first step 13. The blade box also includes a bearing 8, which is sleeved on the first step 13. In this way, the upper support 1 and the lower support 2 of the blade box can rotate with the rotating shaft through the bearing 8.

[0032] Exemplarily, the first shaft body 11 and the second shaft body 12 both adopt a hollow shaft structure or a hollow tube structure.

[0033] For example, the bearing 8 is an angular contact ball bearing 8, which can bear not only axial force but also radial force. The shaft of the bearing 8 mounted on the upper support 1, that is, the connection between the first shaft body 11 and the second shaft body 12, is fixed by a shaft shoulder and a bearing 8 ring.

[0034] Specifically, the lower support 2 includes a third shaft body 21 and a fourth shaft body 22 extending from the top surface of the third shaft body 21, and the connection chuck 6 is sleeved at the connection between the fourth shaft body 22 and the second shaft body 12. In this way, it is easy to assemble and disassemble.

[0035] Exemplarily, the outer periphery of the top surface of the fourth shaft body 22 and the outer periphery of the bottom surface of the second shaft body 12 are both extended with edge structures 23, and the connecting chuck 6 is sleeved on the edge structure 23. In this way, with the edge structure 23 and the connecting chuck 6, the assembly and disassembly operations of the upper support 1 and the lower support 2 are more convenient.

[0036] Exemplarily, the side surface of the fourth shaft body 22 has at least one through hole 221 along its radial direction, so that the first elastic member 5 is installed in the lower support 2, and the lower spring seat has an observation hole, so that the force condition of the first elastic member 5 can be observed in real time.

[0037] Specifically, the support seat 3 includes a first body 31 and a second body 32 protruding from the top surface of the first body 31. A mounting hole 33 is provided between the second body 32 and the first body 31 in the axial direction. The lower support 2 is installed on the base 4 through the positioning member and the mounting hole 33. Among them, the first body 31 adopts a flat plate structure, and the second body 32 adopts a columnar structure. In actual assembly, the first body 31 can be inserted into the base 4 for clamping, and the first elastic member 5 is pressed and connected between the bottom surface of the fourth shaft 22 and the top surface of the second body 32. In this way, the support seat 3 and the base 4 are relatively immovable, and the upper support 1 and the lower support 2 can form a buffer force that reciprocates in the vertical direction relative to the support seat 3 under the setting of the first elastic member 5.

[0038] Specifically, the radial dimension of the first body 31 is greater than the radial dimension of the second body 32, and a safety height gap 7 is left between the top surface of the first body 31 and the bottom surface of the third shaft body 21. In this way, when the lower support 2 moves back and forth in its own axial direction relative to the support seat 3, it will not interfere with the support seat 3, which can also be further understood as facilitating the release of stress when the entire body is subjected to radial impact force.

[0039] Considering the actual installation scenario of the blade box, a reinforcing rib structure 41 is arranged around the base 4 to enhance the supporting strength of the base 4 .

[0040] In summary, the paddle box of the disclosed embodiment is suitable for occasions where the long axis moves continuously and has radial impact force; the long axis fulcrum is increased to reduce the disturbance of the long axis movement and protect the long axis; the chuck interface design is adopted to facilitate disassembly and replacement; the flexible design in the axial direction is adopted, and the shock absorption and vibration reduction effect is obvious; the overall structure is compact, material saving, and industrial aesthetic performance is strong; this paddle box is of universal design, strong interchangeability, low price, and easy to make. In addition, it can not only be used in the field of mixers, but also in related tests such as desulfurization and denitrification, pipelines, wind tunnels, etc., and can be adapted to various assembly scenarios with rotating shafts.

[0041] Based on the above paddle box, the embodiment of the present disclosure also provides a mixer, including the aforementioned paddle box, and also including a motor 16, a gearbox reducer 17 drivingly connected to the motor 16, a double-pivot bracket 18 for supporting the gearbox reducer 17, a stirring shaft 19 and a spear-shaped stirrer, the stirring shaft 19 is assembled with a flexible support device; the double-pivot bracket 18 includes a bracket body, and the bracket body is provided with two pivot positions at intervals in the middle of its own axial direction, and the stirring shaft 19 is assembled and rotated synchronously at the two pivot positions through a coupling or a bearing 8. Specifically, the mixer also includes a plurality of groups of ridge baffles 20 and a suspended support frame 24, the plurality of groups of ridge baffles 20 are arranged at intervals and staggered along the longitudinal direction of the stirring shaft 19, and the suspended support frame 24 is used to suspend the mixer from the ground.

[0042] In the long axis assembly scenario, compared with the existing technology, the jacking method can not only add a middle fulcrum, but also reduce the long axis disturbance during the rotation of the long axis. The flexible components of the first elastic part 5 are used to reduce the impact force, so that the bottom support has a radial compensation function and protects the long axis. In addition, the application of the first elastic part 5 has a shock-absorbing effect to avoid vibration interference.

[0043] In summary, the paddle box and mixer of the disclosed embodiment are used, wherein the mixer is a top-feed mixer, with the motor 16 as the power source, the motor 16 and the gear box reducer 17 are pin-keyed; the gear box and the double-pivot frame, the double-pivot frame and the channel steel are all connected by flanges; the 40# channel steel is fully welded to the top of the reactor; the gear box output shaft and the rigid flange coupling, the rigid flange coupling and the stirring shaft 19 are all pin-keyed; the bearing 8 box is installed in the double-pivot bracket 18 and connected with bolts; the stirring shaft 19 is connected to the stirring blades with bolts; the stirring shaft 19 is connected to the bottom support with screws; the bottom support is fixed, welded to the bottom of the reactor, and anti-corrosion treatment is performed as required.

[0044] In order to avoid the problem of the shaft of the top-entry mixer being too long and easy to break, a flexible bottom support is added to provide the stirring shaft 19 with an additional fulcrum.

[0045] Due to the high liquid depth of the accident paddle box, the end of the stirring shaft 19 inevitably vibrates violently. In addition to adding a bottom support, this paper also designs and adds a welded double-pivot bracket 18. The welded bracket is more rigid than the general cast iron bracket, and the double-pivot bracket 18 has one more support point than the ordinary bracket, so that the long shaft can run more smoothly and safely during the mixing process. Spear-shaped paddles have axial and radial splits, and the flow pattern is more complex than that of straight paddles. The discharge energy is higher than that of straight paddles, and the comprehensive effect is better. It is not only suitable for general flat-bottom slurry tanks, but also can be adapted to conical bottom slurry tanks. Motor 16 is used to provide power source; gearbox reducer 17 is lower in cost and more reliable in performance than traditional spur gear or helical gear reducers. Double-pivot bracket 18 adopts welded bracket, which is more reliable than general casting structure. The production cost is simpler; the stirring shaft 19 adopts pipe state, which is lower in production cost than general solid shaft; spear-shaped agitator: It has a wider range of applications, and can be applied not only to flat-bottom tanks, but also to conical bottom tanks. Three-layer layout, better stirring effect. Flexible bottom support: flexible setting, safer and more reliable; suspended accident paddle box: suspended design, can better handle the tail liquid inside the reactor. Long ridge baffle 20: better spoiler effect than traditional straight baffle. Stronger industrial aesthetics.

[0046] The scheme disclosed in the present invention can meet the occasions of high liquid depth in the barrel, and use a top-entry mixer to replace the side-entry mixer; the flexible bottom support design reduces the risk of long shaft breakage during stirring; the double-pivot frame design adds a stirring fulcrum, allowing the overall stirring shaft 19 to run more smoothly; the spear-shaped stirrer is arranged in three layers, and the stirring effect is better. It can not only adapt to the flat-bottom stirring condition, but also can use the conical bottom. The speed change device uses a gearbox mixer, which is more stable and reliable than the general spur gear and helical gear reducer, with a low failure rate and high cost performance. The stirring shaft 19 adopts a solid shaft + pipe shaft to save materials and improve rigidity and strength; the structure is compact and simple, does not need to use mechanical seals, has good integrity, is easy to make, and has high adaptability. The accident paddle box adopts a suspended design, which can better handle the tail liquid inside the reactor. The dragon ridge baffle 20 has a better turbulence effect than the traditional straight baffle, and has a stronger industrial aesthetics. The paddle box and the mixer of the embodiment of the present invention can be used for flue gas desulfurization and denitrification, pipelines, wind tunnels and other related tests, and can be used under the condition of high liquid depth in the barrel. Through appropriate modification in the later stage, it can be used in various working conditions.

[0047] It should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A paddle box, characterized in that: include: A container tank having an open top surface; A flexible support device, the flexible support device includes a main support body and a connecting body, the main support body is connected to the bottom of the container tank through the connecting body; the main support body has a main shaft mounting position, the main shaft mounting position is used for assembly with a stirring shaft, and can drive the stirring shaft to perform elastic reciprocating movement along its own axial direction.

2. The paddle box according to claim 1, characterized in that: The main support body includes a support, a support seat and a base. The main shaft mounting position is formed on the top surface of the support along its own axial direction. The support is connected to the base through the support seat. The support and the support seat are elastically abutted along their own axial direction. The base is connected to the bottom of the container tank through the connecting body.

3. The paddle box according to claim 2, characterized in that: The main support body also includes a first elastic member, the support includes an upper support and a lower support, the lower support is mounted under the upper support; the support seat is mounted under the lower support and at least partially extends out of the bottom of the lower support; the first elastic member is located in the lower support and is connected between the upper support and the support seat.

4. The paddle box according to claim 3, characterized in that: The support seat extends into the base and is sleeved inside the base, and a safety height gap is left between the bottom surface of the lower support and the base.

5. The paddle box according to claim 3, characterized in that: The blade box also includes a connecting chuck, which is clamped at the connection between the upper support and the lower support.

6. The paddle box according to claim 5, characterized in that: The upper support includes a first shaft body and a second shaft body connected to the bottom of the first shaft body. The radial size of the second shaft body is larger than the radial size of the first shaft body. A first step is formed at the connection between the first shaft body and the second shaft body. The blade box also includes a bearing, and the bearing is mounted on the first step.

7. The paddle box according to claim 6, characterized in that: The lower support includes a third axis body and a fourth axis body extending from the top surface of the third axis body, the outer periphery of the top surface of the fourth axis body and the outer periphery of the bottom surface of the second axis body are both extended with edge structures, and the connecting chuck is mounted on the edge structure; the side surface of the fourth axis body has at least one through hole along its own radial direction.

8. The paddle box according to claim 7, characterized in that: The support seat includes a first main body and a second main body protruding from the top surface of the first main body. A mounting hole is provided between the second main body and the first main body along the axial direction. The lower support is installed on the base through a positioning member and the mounting hole. The first elastic member is pressed and connected between the bottom surface of the fourth shaft and the top surface of the second main body.

9. A mixer, characterized in that: It comprises a paddle box as described in any one of claims 1 to 8, and also comprises a motor, a gear box reducer transmission-connected to the motor, a double-pivot bracket for supporting the gear box reducer, a stirring shaft and a spear-shaped agitator, wherein the stirring shaft is assembled in combination with the flexible support device; the double-pivot bracket comprises a bracket body, wherein two fulcrum positions are arranged at intervals in the middle of the bracket body along its own axial direction, and the stirring shaft is assembled in combination with the two fulcrum positions through couplings or bearings and rotates synchronously.

10. The mixer according to claim 9, characterized in that The mixer also includes a plurality of groups of ridge baffles and a suspended support frame. The plurality of groups of ridge baffles are arranged in an interlaced manner along the longitudinal direction of the mixing shaft. The suspended support frame is used to suspend the mixer from the ground.

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