A multi-stage combined multifunctional shearing mixing device

Abstract

The application discloses a multi-layer combined multifunctional shearing mixing device and belongs to the technical field of material processing equipment. The mixing device is provided with multiple groups of modularized flow guide components and impeller components in a pump shell, multifunctional assembly is realized, the uniformity and the brokenness of multiphase medium mixing are higher, and the mixed medium is sequentially conveyed through a first mixing cavity, a first flow guide cavity, a second mixing cavity, a second flow guide cavity and a third mixing cavity under the rotating driving action of multiple groups of impeller components, and is discharged along outlet pipes on the last stage of cylindrical shells under the action of centrifugal force, so that multi-stage shearing mixing and conveying of the mixed medium are realized. During the flowing of the mixed medium through multiple groups of flow guide components and multiple groups of shearing impeller components, multiple adjustable guide vanes can control the rotating speed of the mixed medium flowing into the next mixing cavity, the mixed medium can keep higher rotating kinetic energy, the mixing effect is enhanced, and the problem that the existing mixing device is single in function and is difficult to meet the complex medium processing requirement is solved.

Description

Technical Field

[0001] This invention belongs to the technical field of material handling equipment, specifically relating to a multi-level combined multi-functional shearing and mixing device. Background Technology

[0002] Mixing devices are used in many industries such as petroleum, chemical, food, and pharmaceutical. They are commonly used for shearing and mixing two or more different media. A typical mixing device includes an inlet / outlet, pump casing, and impeller. Traditional equipment has a single function and cannot meet the needs of handling complex media. For example, it is difficult to meet production requirements when mixing particles with high density or media with high density. Secondly, a single mixing device can generally only mix one type of material or materials with similar properties, making it difficult to adapt to the mixing conditions of various materials. Furthermore, existing mixing devices are prone to media accumulation within the mixing device under extreme usage conditions such as oil and gas development, mining, and construction, resulting in problems such as reduced mixing efficiency. Summary of the Invention

[0003] Based on the problems existing in the above-mentioned background technology, the present invention proposes a multi-level combined multi-functional shearing and mixing device, which solves the problem that the existing mixing devices have single functions and are difficult to meet the needs of complex media processing.

[0004] The embodiments of the present invention are implemented as follows:

[0005] This invention provides a multi-level combined multi-functional shearing and mixing device, which includes a pump housing and a transmission device; an inlet component is provided on one side of the pump housing and an outlet component is provided on the other side.

[0006] The pump casing has multiple sets of flow guiding components and multiple sets of impeller assemblies arranged along its axial direction inside; each set of impeller assemblies is located on one side of the flow guiding components; the transmission device includes a power source and a drive shaft, one end of which is located inside the pump casing to drive the multiple sets of impeller assemblies to rotate, and the other end is located outside the pump casing and connected to the power source.

[0007] Furthermore, as a specific arrangement of each group of flow guiding components, each group of flow guiding components includes a baffle plate, the edge of which is sealed to the inner wall of the pump casing, and a baffle plate inlet hole is provided in the middle of the baffle plate; a flow guiding plate is connected to one side of the baffle plate by bolts, and multiple guide vanes are arranged circumferentially between the baffle plate and the flow guiding plate;

[0008] A set of impeller assemblies is provided on one end face of the guide plate, and the impeller assemblies are arranged close to the outlet assembly; one end of the drive shaft passes through the inlet hole of the partition plate and the middle of the guide plate to drive the impeller assembly to rotate, and the drive shaft and the guide plate are sealed by a sealing ring.

[0009] Furthermore, each of the guide vanes has a circular hole and an elliptical blind hole; each guide vane is disposed between the partition plate and the guide plate by means of a bolt connection that engages with the circular hole.

[0010] On the other side of the guide vane, a guide vane opening adjustment ring is rotatably provided. The guide vane opening adjustment ring is provided with multiple actuating cylinders, and the multiple actuating cylinders are matched one-to-one with multiple guide vanes. A single actuating cylinder is inserted into the elliptical blind hole on each guide vane. A paddle is provided on the guide vane opening adjustment ring.

[0011] Furthermore, as a specific arrangement of each impeller assembly, each impeller assembly includes an impeller component and a stator component. The stator component includes two symmetrically spaced fixing rings, which are fixedly connected by a grid strip that is evenly spaced in the circumferential direction. One fixing ring is fixedly connected to one end face of the guide plate, and the other fixing ring is fixedly connected to the end face of the baffle or one end side wall of the pump casing.

[0012] The impeller assembly includes a left impeller and a right impeller disposed between two fixed rings. The left and right impellers are fixedly connected by a plurality of connecting posts evenly spaced in a circumferential direction. A plurality of left blades and a plurality of right blades are respectively arranged in a circumferential direction on opposite sides of the left and right impellers. The left blades and the right blades are of equal length and there is a gap between them. An inclined blade surface is provided at one end of each left and right blade near the center of the left and right impellers, and the normal direction of the inclined blade surface forms an acute angle with the rotation axis of the impeller assembly.

[0013] The left wheel has an inlet hole at its center for communicating with the inlet component, and a gap is provided between the inlet hole and the inlet of the inlet component; the right wheel has an impeller hub protruding from its center towards the guide plate, and the outer circumference of the impeller hub is rotatably connected to the middle of the guide plate through a radial bearing; the inner circumference of the impeller hub has a keyway, and the drive shaft has a shaft keyway on its shaft end inside the pump casing, and the shaft keyway is connected to the keyway through a connecting key;

[0014] The outer edges of the stator components and the guide plate are provided with gaps between them and the inner wall of the pump casing.

[0015] Furthermore, the stator component is a coaxially fitted double-layer structure, with each layer consisting of two fixing rings and multiple grid strips.

[0016] Furthermore, as a specific arrangement of the pump housing, the pump housing includes a left end cover and a right end cover, and a plurality of cylindrical housings are detachably disposed between the left end cover and the right end cover; an inlet circular hole is provided in the middle of the left end cover; the inlet pipe in the inlet assembly communicates with the inlet circular hole, and an installation groove for cooperating with the fixing ring is provided on the inner end face of the left end cover; a discharge port is provided on the cylindrical housing connected to the right end cover and communicates with the outlet pipe in the outlet assembly, and the discharge port is arranged along the tangential direction of the cylindrical housing.

[0017] Furthermore, both the inlet pipe and the outlet pipe are equipped with connecting flanges at their ends.

[0018] Furthermore, as a specific arrangement of multiple sets of flow guiding components and multiple sets of impeller assemblies within the pump casing, the multiple sets of flow guiding components include a first flow guiding component and a second flow guiding component arranged sequentially from left to right within the pump casing; the multiple sets of impeller assemblies include a first impeller assembly, a second impeller assembly, and a third impeller assembly arranged sequentially from left to right within the pump casing.

[0019] The drive shaft has three keyways on its shaft end inside the pump housing. All three keyways are connected to the keyways in each impeller assembly via connecting keys.

[0020] The gaps between the stator component and the pump housing in the first flow guiding assembly and the second flow guiding assembly are respectively the first flow guiding cavity and the second flow guiding cavity;

[0021] The gaps between the guide plate and the pump casing in the first impeller assembly, the second impeller assembly, and the third impeller assembly are respectively the first mixing chamber, the second mixing chamber, and the third mixing chamber;

[0022] The first impeller assembly is located on the left side of the first guide assembly. The outer end faces of the two fixing rings of the stator component in the first impeller assembly are respectively fixed to the mounting groove on the inner end face of the left end cover and the mounting groove on the left end face of the guide plate in the first guide assembly.

[0023] The second impeller assembly is located on the left side of the second flow guide assembly. The outer end faces of the two fixing rings of the stator component in the second impeller assembly are respectively fixed to the mounting groove on the right end face of the partition in the first flow guide assembly and the mounting groove on the left end face of the flow guide plate in the second flow guide assembly.

[0024] The third impeller assembly is located on the right side of the second flow guide assembly. The outer end faces of the two fixing rings of the stator component in the third impeller assembly are respectively fixed to the mounting groove on the right end face of the partition plate in the second flow guide assembly and the mounting groove on the inner end face of the right end cover.

[0025] Furthermore, as a specific arrangement of the drive shaft, the drive shaft includes a first-stage shaft, a second-stage shaft, a third-stage shaft, and an input shaft that are threaded together from left to right; the first-stage shaft, the second-stage shaft, and the third-stage shaft are all provided with shaft keyways, and the first-stage shaft, the second-stage shaft, and the third-stage shaft are respectively connected to the first impeller assembly, the second impeller assembly, and the third impeller assembly; the input shaft is located outside the pump casing and is connected to the power source.

[0026] Furthermore, the left end cover, the plurality of cylindrical shells and the right end cover are provided with a plurality of connecting lugs with connecting holes at intervals on the outer circumferential walls. The left end cover, the plurality of cylindrical shells and the right end cover are connected to form the pump housing by bolts in the plurality of connecting lugs.

[0027] Compared with existing mixing devices, the advantages of the present invention are:

[0028] 1. This invention discloses a multi-stage combined multi-functional shear mixing device. By arranging multiple sets of guide components and multiple sets of impeller components within the pump casing, the uniformity and abrasion of the mixing medium can be improved. The conveyed mixing medium, driven by the rotation of multiple sets of impeller components, sequentially passes through a first mixing chamber, a first guide chamber, a second mixing chamber, a second guide chamber, and a third mixing chamber. Under centrifugal force, it is discharged through the outlet on the side wall of the last-stage cylindrical shell and through the outlet component, thus achieving shear mixing and conveying of the mixing medium. During the flow of the mixing medium through multiple sets of guide components and multiple sets of impeller components, multiple guide vanes can control the rotational speed of the medium flowing into the next mixing chamber, maintaining higher rotational kinetic energy and enhancing the mixing effect. Furthermore, the dynamic-static shearing effect generated by the impeller and stator components in the impeller assembly, combined with the static-static shearing effect of the replaceable double-layer stator component, results in more uniform shear mixing of the mixing medium.

[0029] 2. The multi-stage combined multi-functional shearing and mixing device of the present invention is composed of a pump casing made of a left end cover, multiple cylindrical shells and a right end cover connected in series along the axial direction. The drive shaft is also made of a first-stage shaft, a second-stage shaft, a third-stage shaft and an input shaft connected by threads. It can be used to add multiple sets of cylindrical shells, multiple sets of flow guiding components, multiple sets of impeller components and multiple drive shafts in series for high solid content and high viscosity mixing media to form more stages of mixing chambers and enhance the shearing, crushing and mixing of the mixing media.

[0030] 3. The multi-level combined multi-functional shearing and mixing device of the present invention has all components designed in a modular manner. The internal flow channel of the pump casing is open, which not only facilitates the maintenance and replacement of the product in the later stage, but also allows for the addition of a longer mixing chamber according to actual needs, thereby improving the mixing effect and mixing efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The above and other objects, features, and advantages of the present invention will become clearer through the accompanying drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale to actual dimensions; the focus is on illustrating the main points of the invention.

[0032] Figure 1 This is a three-dimensional structural schematic diagram of a multi-level combined multifunctional shearing and mixing device.

[0033] Figure 2 This is a schematic diagram of the internal structure of a multi-level combined multi-functional shearing and mixing device.

[0034] Figure 3 This is a three-dimensional structural diagram of a single impeller assembly.

[0035] Figure 4 This is a schematic diagram of the internal structure of a single impeller assembly.

[0036] Figure 5 This is a three-dimensional exploded view of a single flow guide component.

[0037] Figure 6 A three-dimensional structural diagram of a single flow guide assembly after the partition is removed.

[0038] Figure 7 This is a three-dimensional exploded view of the drive shaft.

[0039] Figure 8 This is a three-dimensional structural diagram of the stator component.

[0040] Figure 9 This is a schematic diagram of a double-layer structure where the stator components are coaxially sleeved.

[0041] Among them, 1. Pump casing; 11. Left end cover; 12. Right end cover; 13. Cylindrical shell; 14. Inlet hole; 15. Discharge port; 16. Connecting lug;

[0042] 2. Imported components; 21. Imported pipes;

[0043] 3. Export components; 31. Export pipe;

[0044] 4. Flow guiding assembly; 41. Baffle plate; 42. Baffle plate inlet hole; 43. Bolt connector; 44. Flow guide plate; 45. Guide vane; 451. Circular hole; 452. Elliptical blind hole; 46. Sealing ring; 47. Guide vane opening adjustment ring; 48. Actuating cylinder; 49. Paddle; 4A. First flow guiding assembly; 4B. Second flow guiding assembly;

[0045] 5. Impeller assembly; 51. Impeller component; 511. Left impeller disk; 512. Right impeller disk; 513. Connecting column; 514. Left blade; 515. Right blade; 516. Inclined blade surface; 517. Inlet orifice; 518. Impeller hub; 519. Radial bearing; 520. Keyway; 52. Stator component; 521. Retaining ring; 522. Grid bar; 5A. First impeller assembly; 5B. Second impeller assembly; 5C. Third impeller assembly;

[0046] 6. Drive shaft; 61. Shaft keyway; 62. First-stage shaft; 63. Second-stage shaft; 64. Third-stage shaft; 65. Input shaft;

[0047] 7. Connecting flange;

[0048] 8. First flow guide cavity; 9. Second flow guide cavity; 10. First mixing cavity; 110. Second mixing cavity; 120. Third mixing cavity. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0051] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0052] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0053] For the first embodiment, please refer to... Figure 1 and Figure 2 As shown, the first embodiment of the present invention provides a multi-level combined multi-functional shearing and mixing device, including a pump housing 1 and a transmission device; an inlet component is provided on one side of the pump housing 1 and an outlet component 3 is provided on the other side.

[0054] The pump casing 1 has multiple sets of flow guiding components 4 and multiple sets of impeller assemblies 5 arranged along its axial direction inside; each set of impeller assembly 5 is located on one side of the single set of flow guiding components 4; the transmission device includes a power source and a drive shaft 6, one end of the drive shaft 6 is located inside the pump casing 1 to drive the multiple sets of impeller assemblies 5 to rotate, and the other end is located outside the pump casing 1 and connected to the power source.

[0055] Specifically, such as Figure 2 , Figure 5 and Figure 6 As shown, as a specific arrangement of each group of flow guiding components 4, each group of flow guiding components 4 includes a baffle plate 41. The edge of the baffle plate 41 is sealed to the inner wall of the pump casing 1. A baffle plate inlet hole 42 is provided in the middle of the baffle plate 41. A flow guiding plate 44 is connected to one side of the baffle plate 41 by a bolt connector 43. Multiple guide vanes 45 are arranged circumferentially between the baffle plate 41 and the flow guiding plate 44.

[0056] A set of impeller assemblies 5 is provided on one end face of the guide plate 44, and the impeller assemblies 5 are arranged near the outlet assembly 3; one end of the drive shaft 6 passes through the inlet hole 42 of the partition plate and the middle of the guide plate 44 to drive the impeller assembly 5 to rotate, and the drive shaft 6 and the guide plate 44 are sealed by a sealing ring 46. The sealing ring 46 ensures that the mixing medium will not enter the gap between the drive shaft 6 and the guide plate 44.

[0057] Each of the guide vanes 45 has a round hole 451 and an elliptical blind hole 452; each guide vane 45 is disposed between the partition plate 41 and the guide plate 44 by means of a bolt connector 43 cooperating with the round hole 451.

[0058] Specifically, a guide vane opening adjustment ring 47 is rotatably mounted on the other side of the guide vane 44. The guide vane opening adjustment ring 47 has multiple actuating cylinders 48, each paired with a guide vane 45. Each actuating cylinder 48 is inserted into an elliptical blind hole 452 on each guide vane 45. A paddle 49 is mounted on the guide vane opening adjustment ring 47. Plugging the paddle 49 causes several guide vanes 45 to swing simultaneously. The purpose of this design is that when the paddle 49 is moved, it drives the guide vane opening adjustment ring 47 to rotate, causing the actuating cylinders 48 connected to it to rotate in conjunction with several guide vanes 45. This allows the mixing medium to maintain its original rotational kinetic energy and flow more effectively into the next mixing chamber.

[0059] like Figure 2, Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, as a specific arrangement of each impeller assembly 5, each impeller assembly 5 includes an impeller component 51 and a stator component 52. The stator component 52 includes two symmetrically spaced fixing rings 521. The two fixing rings 521 are fixedly connected by a grid strip that is evenly spaced in the circumferential direction. One fixing ring 521 is fixedly connected to one end face of the guide plate 44, and the other fixing ring 521 is fixedly connected to the end face of the partition plate 41 or one end side wall of the pump casing 1.

[0060] The impeller component 51 includes a left impeller 511 and a right impeller 512 disposed between two fixed rings 521. The left impeller 511 and the right impeller 512 are fixedly connected by a plurality of connecting posts 513 evenly spaced in a circumferential direction. A plurality of left blades 514 and a plurality of right blades 515 are respectively arranged in a circumferential direction on the opposite sides of the left impeller 511 and the right impeller 512. The lengths of the left blades 514 and the right blades 515 are equal, and there is a gap between the left blades 514 and the right blades 515. An inclined blade surface 516 is provided at one end of the left blade 514 and the right blade 515 near the center of the left impeller 511 and the right impeller 512, and the normal direction of the inclined blade surface 516 forms an acute angle with the rotation axis of the impeller component 51.

[0061] The left wheel 511 has an inlet circular hole 517 at its center for communication with the inlet component, and a gap is provided between the inlet circular hole 517 and the inlet of the inlet component. The right wheel 512 has an impeller hub 518 protruding from its center towards the guide plate 44. The outer circumferential wall of the impeller hub 518 is rotatably connected to the center of the guide plate 44 via a radial bearing 519. A keyway 520 is provided on the inner circumferential wall of the impeller hub 518. The drive shaft 6, located inside the pump housing 1, has a shaft keyway 61 on its shaft end, which is connected to the keyway 520 via a connecting key. Gaps are provided between the outer edges of the stator component 52 and the guide plate 44 and the inner wall of the pump housing 1.

[0062] In impeller component 51, the left impeller 511 and the right impeller 512 are symmetrically arranged, which reduces turbulence in the mixed medium inside the impeller, allowing it to be discharged more smoothly along the impeller radial direction. The discontinuous blade design of the left blade 514 and the right blade 515 also allows certain high-solids-content and high-viscosity mixed media to have a larger flow space, making them easier to flow in the impeller. The design of the inclined blade surface 516 ensures that the mixed medium has sufficient flow space after entering the impeller. The design of the connecting column 513 ensures a stable connection between the left impeller 511 and the right impeller 512, giving the impeller component 51 sufficient overall strength.

[0063] like Figure 9 As shown, the stator component 52 can also be a coaxially sleeved double-layer structure stator component 52, each layer consisting of two fixing rings 521 and multiple grid strips. The dynamic-static shear effect generated by the impeller component 51 and the stator component 52 in the impeller assembly 5, together with the static-static shear effect of the replaceable double-layer structure stator component 52, results in a more uniform shear mixing of the mixing medium.

[0064] Specifically, as a specific arrangement of multiple sets of flow guiding components 4 and multiple sets of impeller assemblies 5 within the pump casing 1, the multiple sets of flow guiding components 4 include a first flow guiding component 4A and a second flow guiding component 4B arranged sequentially from left to right within the pump casing 1; the multiple sets of impeller assemblies 5 include a first impeller assembly 5A, a second impeller assembly 5B, and a third impeller assembly 5C arranged sequentially from left to right within the pump casing 1.

[0065] The drive shaft 6 is provided with three shaft keyways 61 on its shaft end inside the pump housing 1. All three shaft keyways 61 are connected to the keyway 520 in each impeller assembly 5 by connecting keys.

[0066] The gaps between the stator component 52 and the pump housing 1 in the first flow guiding assembly 4A and the second flow guiding assembly 4B are the first flow guiding cavity 8 and the second flow guiding cavity 9, respectively.

[0067] The gaps between the guide plate 44 and the pump casing 1 in the first impeller assembly 5A, the second impeller assembly 5B and the third impeller assembly 5C are the first mixing chamber 10, the second mixing chamber 110 and the third mixing chamber 120, respectively.

[0068] The first impeller assembly 5A is disposed on the left side of the first flow guide assembly 4A. The outer end faces of the two fixing rings 521 of the stator component 52 in the first impeller assembly 5A are respectively fixed to the mounting groove on the inner end face of the left end cover 11 and the mounting groove on the left end face of the flow guide plate 44 in the first flow guide assembly 4A.

[0069] The second impeller assembly 5B is located on the left side of the second flow guide assembly 4B. The outer end faces of the two fixing rings 521 of the stator component 52 in the second impeller assembly 5B are respectively fixed to the mounting groove on the right end face of the partition 41 in the first flow guide assembly 4A and the mounting groove on the left end face of the flow guide plate 44 in the second flow guide assembly 4B.

[0070] The third impeller assembly 5C is located on the right side of the second flow guide assembly 4B. The outer end faces of the two fixing rings 521 of the stator component 52 in the third impeller assembly 5C are respectively fixed to the mounting groove on the right end face of the partition 41 in the second flow guide assembly 4B and the mounting groove on the inner end face of the right end cover 12.

[0071] In use, a multi-stage combined multi-functional shearing and mixing device involves a drive shaft 6 driving the impeller components 51 in multiple impeller assemblies 5 to rotate at high speed, causing the gas in the first mixing chamber 10 to be discharged. The resulting negative pressure draws the mixing medium into the first mixing chamber 10 along the inlet assembly. The left blade 514 and right blade 515 on the high-speed rotating impeller components 51 also cause the mixing medium to rotate. The mixing medium flowing out of the impeller components 51 undergoes shearing collision with the stator components 52. Under the strong shearing action, the mixing medium mixes rapidly. The mixing medium flowing out of the stator components 52 enters the first guide... In the flow cavity 8, under the action of the guide vane 45, the medium maintains a certain rotational kinetic energy and enters the second mixing cavity 110 through the inlet hole 42 of the baffle plate. Then, it flows sequentially through the second guide cavity 9 and the third mixing cavity 120. The second mixing cavity 110 and the third mixing cavity 120 have the same structure as the first mixing cavity 10, and the second guide cavity 9 has the same structure as the first guide cavity 8. This allows the mixing medium to undergo three stages of shear mixing in sequence. Finally, under the action of centrifugal force, the mixing medium is discharged along the discharge port 15 on the side wall of the last stage cylindrical shell 13 and through the outlet assembly 3, realizing the shear mixing and conveying of the mixing medium. Multiple sets of guide assemblies 4 and multiple sets of impeller assemblies 5 enable the mixing medium to be gradually sheared, crushed, and mixed, resulting in thorough mixing and smooth flow of the mixing medium. At the same time, the impeller assembly 5 can be replaced and the number of mixing devices can be increased according to actual usage requirements to form multiple mixing devices in series, thereby enhancing the mixing effect of the mixing pump and solving the problems of insufficient mixing homogeneity, clogging caused by mixing, and inability to adapt to multiple media.

[0072] The second embodiment of the present invention provides a multi-level combined multi-functional shearing and mixing device. This embodiment is a further limitation on the first embodiment. The improvement lies in how the pump housing 1 is set. For other parts not mentioned, please refer to the first embodiment or the prior art.

[0073] Specifically, such as Figure 1As shown, the pump housing 1 includes a left end cover 11 and a right end cover 12. Multiple cylindrical housings 13 are detachably disposed between the left end cover 11 and the right end cover 12. An inlet hole 14 is provided in the middle of the left end cover 11. An inlet pipe 21 in the inlet assembly communicates with the inlet hole 14. An installation groove for engaging with the fixing ring 521 is provided on the inner end face of the left end cover 11. A discharge port 15, communicating with the outlet pipe 31 in the outlet assembly 3, is provided on the cylindrical housing 13 connected to the right end cover 12. The discharge port 15 is arranged along the tangent direction of the cylindrical housing 13. Multiple connecting lugs 16 with connecting holes are circumferentially spaced on the outer circumferential walls of the left end cover 11, the multiple cylindrical housings 13, and the right end cover 12. Bolts are installed within the multiple connecting lugs 16 to connect the left end cover 11, the multiple cylindrical housings 13, and the right end cover 12 to form the pump housing 1. Both the inlet pipe 21 and the outlet pipe 31 are equipped with connecting flanges 7 at their ends.

[0074] The above configuration achieves a tight connection between multiple cylindrical shells 13, preventing leakage and facilitating the disassembly of the left end cover 11 and right end cover 12 to replace internal flow-through components. Furthermore, more cylindrical shells 13 can be added to create multiple mixing chambers, enhancing the shearing and mixing effect on the media, depending on the desired mixing degree. The connecting flange 7 facilitates the connection of the inlet pipe 21 and outlet pipe 31 to external pipelines.

[0075] For structures not mentioned in this embodiment, please refer to the prior art or the first embodiment.

[0076] The third embodiment, the second embodiment of the present invention, provides a multi-level combined multi-functional shearing and mixing device. This embodiment is a further limitation on the first embodiment. The improvement lies in how to set the drive shaft 6. For other parts not mentioned, please refer to the first embodiment or the prior art.

[0077] like Figure 2 , Figure 5 and Figure 7As shown, the drive shaft 6 includes a first-stage shaft 62, a second-stage shaft 63, a third-stage shaft 64, and an input shaft 65, which are threaded together from left to right. Each of the first-stage shaft 62, second-stage shaft 63, and third-stage shaft 64 has a keyway 61. The first-stage shaft 62, second-stage shaft 63, and third-stage shaft 64 are respectively connected to the first impeller assembly 5A, the second impeller assembly 5B, and the third impeller assembly 5C. The input shaft 65 is located outside the pump housing 1 and connected to the power source. Specifically, the right end face of the first-stage shaft 62 has an internal thread, which connects to the external thread on the left end face of the second-stage shaft 63. The connection method for every two adjacent shaft ends is the same. This internal and external thread fit design facilitates the replacement of various components. Furthermore, when more cylindrical housings 13 are connected in series, the number of shafts can be increased to achieve corresponding matching replacement and installation.

[0078] In summary, the multi-level combined multi-functional shearing and mixing device of the present invention features a modular design for all components. The pump housing 1 has an open internal flow channel, which not only facilitates the later maintenance and replacement of the product, but also allows for the addition of a longer mixing chamber according to actual needs, thereby improving the mixing effect and efficiency. This solves the problem that existing mixing devices have limited functionality and are unable to meet the needs of complex media processing.

[0079] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-level combined multifunctional shearing and mixing device, characterized in that, It includes a pump casing and a transmission device; an inlet assembly is provided on one side of the pump casing, and an outlet assembly is provided on the other side; The pump casing has multiple sets of flow guide assemblies and multiple sets of impeller assemblies arranged axially inside; each set of impeller assemblies is located on one side of a single set of flow guide assemblies; the transmission device includes a power source and a drive shaft, one end of which is located inside the pump casing to drive the multiple sets of impeller assemblies to rotate, and the other end is located outside the pump casing and connected to the power source; each set of flow guide assemblies includes a baffle plate, the edge of which is sealed to the inner wall of the pump casing, and a baffle plate inlet hole is provided in the middle of the baffle plate; a guide plate is connected to one side of the baffle plate by bolts, and multiple guide vanes are arranged circumferentially between the baffle plate and the guide plate; A set of impeller assemblies is provided on one end face of the guide plate, and impeller assemblies are provided near the outlet assembly and the inlet assembly; one end of the drive shaft passes through the inlet hole of the partition plate and the middle of the guide plate to drive the impeller assembly to rotate, and the drive shaft and the guide plate are sealed by a sealing ring; Each guide vane has a circular hole and an elliptical blind hole; each guide vane is disposed between the partition plate and the guide plate by means of a bolt connection that engages with the circular hole. On the other side of the guide vane, a guide vane opening adjustment ring is rotatably provided. The guide vane opening adjustment ring is provided with multiple actuating cylinders, and the multiple actuating cylinders are matched one-to-one with multiple guide vanes. A single actuating cylinder is inserted into the elliptical blind hole on each corresponding guide vane. A paddle is provided on the guide vane opening adjustment ring. Each impeller assembly includes an impeller component and a stator component. The stator component includes two symmetrically spaced fixing rings. The two fixing rings are fixedly connected by a grid strip that is evenly spaced in the circumferential direction. One fixing ring is fixedly connected to one end face of the guide plate, and the other fixing ring is fixedly connected to the end face of the baffle or one end side wall of the pump casing. The impeller assembly includes a left impeller and a right impeller disposed between two fixed rings. The left and right impellers are fixedly connected by a plurality of connecting posts evenly spaced in a circumferential direction. A plurality of left blades and a plurality of right blades are respectively arranged in a circumferential direction on opposite sides of the left and right impellers. The left blades and the right blades are of equal length and there is a gap between them. An inclined blade surface is provided at one end of each left and right blade near the center of the left and right impellers, and the normal direction of the inclined blade surface forms an acute angle with the rotation axis of the impeller assembly. The left wheel has an inlet hole at its center; the right wheel has an impeller hub protruding at its center; the impeller hub has a keyway on its inner circumference; the drive shaft has a keyway on its shaft end inside the pump housing; the keyway is connected to the drive shaft by a connecting key. A gap is provided between the outer edge of the stator component and the guide plate and the inner wall of the pump casing; The stator component is a coaxially fitted double-layer structure, each layer consisting of two fixing rings and multiple grid strips.

2. The multi-level combined multi-functional shearing and mixing device according to claim 1, characterized in that, The pump casing includes a left end cover and a right end cover, and a plurality of cylindrical shells are detachably disposed between the left end cover and the right end cover; an inlet hole is provided in the middle of the left end cover; the inlet pipe in the inlet assembly communicates with the inlet hole, and an installation groove for cooperating with the fixing ring is provided on the inner end face of the left end cover; a discharge port is provided on the cylindrical shell connected to the right end cover and communicates with the outlet pipe in the outlet assembly, and the discharge port is arranged along the tangential direction of the cylindrical shell.

3. The multi-level combined multifunctional shearing and mixing device according to claim 2, characterized in that, Both the inlet and outlet pipes are equipped with connecting flanges at their ends.

4. The multi-level combined multi-functional shearing and mixing device according to claim 2, characterized in that, The multiple sets of flow guiding components include a first flow guiding component and a second flow guiding component arranged sequentially from left to right within the pump casing; the multiple sets of impeller assemblies include a first impeller assembly, a second impeller assembly, and a third impeller assembly arranged sequentially from left to right within the pump casing; The drive shaft has three keyways on its shaft end inside the pump housing. All three keyways are connected to the keyways in each impeller assembly via connecting keys. The gaps between the stator component and the pump housing in the first flow guiding assembly and the second flow guiding assembly are respectively the first flow guiding cavity and the second flow guiding cavity; The gaps between the guide plate and the pump casing in the first impeller assembly, the second impeller assembly, and the third impeller assembly are respectively the first mixing chamber, the second mixing chamber, and the third mixing chamber; The first impeller assembly is located on the left side of the first guide assembly. The outer end face of one of the fixing rings of the stator component in the first impeller assembly is fixed to the mounting groove on the inner end face of the left end cover, and the outer end face of the other fixing ring is fixed to the mounting groove on the left end face of the guide plate in the first guide assembly. The second impeller assembly is located on the left side of the second flow guide assembly. The outer end face of one fixing ring of the stator component in the second impeller assembly is fixed to the mounting groove on the right end face of the partition plate in the first flow guide assembly, and the outer end face of the other fixing ring is fixed to the mounting groove on the left end face of the flow guide plate in the second flow guide assembly. The third impeller assembly is located on the right side of the second guide assembly. The outer end face of one fixing ring of the stator component in the third impeller assembly is fixed to the mounting groove on the right end face of the partition in the second guide assembly, and the outer end face of the other fixing ring is fixed to the mounting groove on the inner end face of the right end cover.

5. The multi-level combined multifunctional shearing and mixing device according to claim 4, characterized in that, The drive shaft includes a first-stage shaft, a second-stage shaft, a third-stage shaft, and an input shaft that are threaded together from left to right; the first-stage shaft, the second-stage shaft, and the third-stage shaft are all provided with shaft keyways, and the first-stage shaft, the second-stage shaft, and the third-stage shaft are respectively connected to the first impeller assembly, the second impeller assembly, and the third impeller assembly; the input shaft is located outside the pump casing and is connected to the power source.

6. The multi-level combined multi-functional shearing and mixing device according to claim 2, characterized in that, The left end cover, the multiple cylindrical shells and the right end cover are provided with multiple connecting lugs with connecting holes at intervals around their circumference. The left end cover, the multiple cylindrical shells and the right end cover are connected to form the pump casing by setting bolts in the multiple connecting lugs.

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