Rotor pump suitable for high-viscosity substance

Abstract

A rotor pump suitable for a high-viscosity substance, the rotor pump comprising a rotor (1) and rotating shafts (2), and further comprising a left bearing box (3), an intermediate pump body (4) and a right bearing box (5) which are connected in sequence in the axial direction, wherein the left bearing box (3) is provided with two first bearing supporting structures (6) arranged vertically opposite each other, the right bearing box (5) is provided with two second bearing supporting structures (7) arranged vertically opposite each other, the first rotating shaft (2.1) is supported by a first bearing supporting structure (6) and a second bearing supporting structure (7) which are located at the same height on the upper side, and the second rotating shaft (2.2) is supported by a first bearing supporting structure (6) and a second bearing supporting structure (7) which are located at the same height on the lower side; and the rotor (1) is arranged between the first bearing supporting structures (6) and the second bearing supporting structures (7).

Description

A rotor pump suitable for high viscosity Technical Field

[0001] The invention relates to the technical field of rotor pumps, in particular to a rotor pump suitable for high viscosity. Background Art

[0002] Viscosity refers to the fluidity (or immobility) of a substance. Any fluid has viscosity. A liquid's viscosity is a measure of its resistance to shear forces, manifested during initial and sustained flow. For example, a liquid with high viscosity requires more force to flow than one with low viscosity.

[0003] Currently, there is a type of rotor pump whose main function is to transport such viscous materials. This type of rotor pump is also called a cam rotor pump. For a long time, the design concept or technical route of this type of rotor pump has generally adopted a rotor suspension structure design. Specifically, this type of rotor suspension structure design generally includes a gearbox and a pump body arranged in sequence along the axial direction. The gearbox is rotatably mounted with a rotating shaft, which is mainly supported by two sets of bearings provided on the gearbox. One end of the rotating shaft extends from one side of the gearbox to the other side of the pump body and extends into the pump chamber of the pump body. A rotor is provided in the pump chamber. One end of the rotating shaft is connected to the rotor. The rotor rotates and drives the rotor to rotate. The pump chamber has an inlet and an outlet on both sides of the pump chamber. When the rotor rotates, it draws material from the inlet and further rotates to discharge the material from the outlet, thereby generating a certain pressure and flow rate. The aforementioned rotor suspension structure design is exemplified by the technical solution disclosed in Chinese invention application publication number CN103671088A and the technical solution disclosed in Chinese utility model patent publication number CN209012051U.

[0004] In order to further achieve the purpose of conveying high-viscosity substances, the applicant previously proposed a solution, which is the technical solution disclosed in the Chinese invention application with publication number CN111140492A. However, this solution is still based on the design concept of the rotor suspension structure, that is, on the basis of the two sets of bearings of the gearbox providing the main support, a third set of bearing supports is further added on the right side of the pump body. Although this solution is conducive to solving the problem of conveying high-viscosity substances, as the viscosity continues to increase, for example, even to 1 million centipoise, the existing rotor pump can no longer complete the conveying. Even if it can rotate and convey, it will soon become stuck and inefficient, and the rotation speed cannot be increased.

[0005] Therefore, in the above-mentioned field of rotor pump technology, how to solve the problem of transporting substances with higher viscosity requires further research. The applicant will provide a rotor pump suitable for high viscosity. Technical issues

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art and propose a rotor pump suitable for high viscosity, which can solve the problem of transporting materials with higher viscosity. Technical Solutions

[0007] Compared with the prior art, the present invention proposes a rotor pump suitable for high viscosity, comprising a rotor and a rotating shaft, and also comprising a left bearing box, an intermediate pump body and a right bearing box connected in sequence along the axial direction, the left bearing box is provided with two first bearing support structures arranged opposite each other up and down, and the right bearing box is provided with two second bearing support structures arranged opposite each other up and down, the rotating shaft comprises a first rotating shaft and a second rotating shaft arranged opposite each other up and down, the first rotating shaft is supported by the first bearing support structure and the second bearing support structure located at the same height on the upper side, and similarly, the second rotating shaft is supported by the first bearing support structure and the second bearing support structure located at the same height on the lower side; the rotor is arranged between the first bearing support structure and the second bearing support structure, and the rotor is directly supported on both sides of the rotor by the first bearing support structure and the second bearing support structure; the first rotating shaft and the second rotating shaft are provided with synchronous gears on the outside of any one of the left bearing box and the right bearing box, and any one of the first rotating shaft and the second rotating shaft is used as the input shaft.

[0008] In some embodiments, the left and right sides of the intermediate pump body are both opened and respectively provided with a first mating end cover and a second mating end cover to form a complete pump chamber, the left side of the intermediate pump body is provided with an upper left support portion and a lower left support portion that are vertically opposite to each other, the first mating end cover is connected between the upper left support portion and the lower left support portion to reinforce the upper left support portion and the lower left support portion, the right side of the intermediate pump body is provided with an upper right support portion and a lower right support portion that are vertically opposite to each other, the second mating end cover is connected between the upper right support portion and the lower right support portion to reinforce the upper right support portion and the lower right support portion;

[0009] The left bearing box is provided with a right protrusion, which is connected between the left upper support portion and the left lower support portion and axially positions the first mating end cover, and the right bearing box is provided with a left protrusion, which is connected between the right upper support portion and the right lower support portion and axially positions the second mating end cover;

[0010] The right circumferential end portion of the left bearing box is further connected to the left upper support portion and the left lower support portion by fasteners, and the left circumferential end portion of the right bearing box is further connected to the right upper support portion and the right lower support portion by fasteners;

[0011] The rotor is arranged between a first mating end cover and a second mating end cover. The first mating end cover is provided with a first rotating seal to prevent leakage, and the second mating end cover is provided with a second rotating seal to prevent leakage.

[0012] In some embodiments, an adjusting washer and a rotor locking nut are respectively provided on both sides of the rotor, and a step surface is provided on the rotating shaft. The step surface is used as a positioning surface, and the rotor locking nut, the rotor, and the adjusting washer are sequentially mounted on the rotor along the axial direction. The step surface is used to axially position the adjusting washer, and the rotor locking nut is threadedly connected to the rotor to axially lock the rotor on the rotating shaft; an annular recess is provided on both sides of the rotor, and the annular recess is used to accommodate the adjusting washer and the rotor locking nut, respectively.

[0013] In some embodiments, a first rotating seal and a second rotating seal are further provided on both sides of the rotor. The first rotating seal extends toward one side of the rotor and seals the circumference of the annular recess. Similarly, the second rotating seal extends toward one side of the rotor and seals the circumference of the annular recess.

[0014] In some embodiments, the first mating end cover and the second mating end cover are both provided with an annular mounting groove on one side of the rotor. The first rotating seal is installed from one side of the annular mounting groove and abuts against the left side of the rotor. The annular mounting groove plays an axial positioning role for the first rotating seal. Similarly, the second rotating seal is installed from one side of the annular mounting groove and abuts against the right side of the rotor. The annular mounting groove plays an axial positioning role for the second rotating seal.

[0015] In some embodiments, a synchronous gear is provided on the outside of the right bearing box, the second bearing support structure is arranged adjacent to the synchronous gear, and each second bearing support structure includes two oppositely arranged tapered roller bearings, and each tapered roller bearing is mounted in the bearing mounting hole of the right bearing box.

[0016] In some embodiments, the left bearing box is also provided with a bearing mounting hole and is installed with a cylindrical roller bearing.

[0017] In some embodiments, a gap is provided between the upper left support portion and the lower left support portion, and after the right circumferential end portion of the left bearing box is connected to the upper left support portion and the lower left support portion, at least a portion of the end surface of the right circumferential end portion of the left bearing box is exposed in the gap, and the gap is provided for a tool to be inserted into so that the tool can apply force on the end surface for easy removal, and / or a gap is also provided between the upper right support portion and the lower right support portion, and after the left circumferential end portion of the right bearing box is connected to the upper right support portion and the lower right support portion, at least a portion of the end surface of the left circumferential end portion of the right bearing box is exposed in the gap, and the gap is provided for a tool to be inserted into so that the tool can apply force on the end surface for easy removal.

[0018] In some embodiments, the first bearing support structure and the second bearing support structure are arranged symmetrically about the middle pump body, and the rotor is centrally arranged between the first bearing support structure and the second bearing support structure.

[0019] In some embodiments, the portion of the intermediate pump body located between the first mating end cover and the second mating end cover is a circumferential portion, and a plurality of axially arranged reinforcing ribs are provided on the circumference of the circumferential portion, and the two ends of the reinforcing ribs located on the upper side are respectively connected to the upper left support portion and the upper right support portion. Similarly, the two ends of the reinforcing ribs located on the lower side are respectively connected to the lower left support portion and the lower right support portion, and the portion between the upper and lower sides of the intermediate pump body is respectively provided with an inlet and an outlet; a support seat is also provided on the lower side of the intermediate pump body. Beneficial effects

[0020] After adopting the above structure, compared with the prior art, the present invention has the following advantages:

[0021] The present disclosure breaks through the traditional design concept of the existing rotor pump rotor suspension structure through improvement, and does not have a traditional gearbox, that is, there are no traditional two sets of bearing support structures on the gearbox.

[0022] Specifically, the present invention includes a left bearing box, a middle pump body and a right bearing box connected together in sequence, the left bearing box is provided with two first bearing support structures arranged vertically opposite to each other, the right bearing box is provided with two second bearing support structures arranged vertically opposite to each other, the rotating shaft includes a first rotating shaft and a second rotating shaft arranged vertically opposite to each other, the first rotating shaft is supported by the first bearing support structure and the second bearing support structure located at the same height on the upper side, similarly, the second rotating shaft is supported by the first bearing support structure and the second bearing support structure located at the same height on the lower side, the left bearing box is provided with a right side protrusion, the right side protrusion is connected between the upper left support part and the lower left support part and axially positions the first mating end cover, the right bearing box is provided with a left side protrusion, the left side protrusion is connected to The second mating end cover is connected between the upper right support part and the lower right support part and axially positioned, the left side of the intermediate pump body is provided with an upper left support part and a lower left support part which are arranged opposite each other up and down, the first mating end cover is connected between the upper left support part and the lower left support part to strengthen the upper left support part and the lower left support part, the right side of the intermediate pump body is provided with an upper right support part and a lower right support part which are arranged opposite each other up and down, the second mating end cover is connected between the upper right support part and the lower right support part to strengthen the upper right support part and the lower right support part, and the rotor is arranged between the first mating end cover and the second mating end cover, the right circumferential end of the left bearing box is also connected to the upper left support part and the lower left support part by fasteners, and the left circumferential end of the right bearing box is also connected to the upper right support part and the lower right support part by fasteners.

[0023] Therefore, the rotor is arranged between the first bearing support structure and the second bearing support structure, and is directly supported by the first bearing support structure and the second bearing support structure on both sides of the rotor. Then, the rotating shaft connected to the rotor is not cantilevered. Under high viscosity conditions, the rotating shaft is not easy to bend even if it is subjected to a large force, thereby ensuring the fit between the rotor and the pump chamber and not prone to failure.

[0024] In addition, in order to provide sufficient force strength and to achieve direct support on both sides of the rotor through production and assembly, the left and right sides of the intermediate pump body are both opened, the first matching end cover is connected between the upper left support part and the lower left support part to strengthen the upper left support part and the lower left support part, the second matching end cover is connected between the upper right support part and the lower right support part to strengthen the upper right support part and the lower right support part, and the left bearing box is provided with a right side protrusion, which is connected between the upper left support part and the lower left support part and axially positions the first matching end cover, and the right bearing box is provided with a left side protrusion, The left-side raised portion is connected between the upper right support portion and the lower right support portion and axially positions the second mating end cover. In this way, the right-side raised portion and the left-side raised portion not only participate in assembly positioning to simplify production and manufacturing, but also play a reinforcing role. At the same time, it is also beneficial for the force exerted on the left-side bearing box and the right-side bearing box to be transmitted to the middle pump body. Of course, the right-side circumferential end portion of the left-side bearing box is also connected to the upper left support portion and the lower left support portion through fasteners, and the left-side circumferential end portion of the right-side bearing box is also connected to the upper right support portion and the lower right support portion through fasteners, which also realize the transmission of force at the same time.

[0025] According to the design concept disclosed in the present invention, there is no need to set up bearing support structures on both sides of the synchronous gear as in the prior art. Therefore, the bearing support structures on both sides of the synchronous gear can be eliminated without worrying about the support stability of the rotor, and the synchronous gear can be focused on synchronous transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic perspective view of a rotor pump suitable for high viscosity disclosed herein from a side perspective.

[0027] FIG2 is a three-dimensional schematic diagram of a rotor pump suitable for high viscosity disclosed herein, viewed from the side of the box cover.

[0028] FIG3 is a top view of a rotor pump suitable for high viscosity according to the present disclosure.

[0029] FIG4 is a cross-sectional view taken along the line AA.

[0030] FIG5 is a perspective schematic diagram of a left bearing box disclosed herein.

[0031] FIG6 is a perspective schematic diagram of an intermediate pump body disclosed in the present invention.

[0032] FIG7 is a three-dimensional schematic diagram of a rotor pump suitable for high viscosity disclosed herein with the middle pump body removed.

[0033] FIG8 is a perspective schematic diagram of a first rotating shaft disclosed herein.

[0034] FIG9 is a perspective schematic diagram of a rotor disclosed herein.

[0035] FIG10 is a perspective schematic diagram of a first mating end cap disclosed herein.

[0036] Explanation of the reference numerals: 1-rotor, 2-rotating shaft, 2.1-first rotating shaft, 2.2-second rotating shaft, 3-left bearing box, 4-middle pump body, 5-right bearing box, 6-first bearing support structure, 7-second bearing support structure, 8-first matching end cover, 9-second matching end cover, 10-pump chamber, 11-upper left support portion, 12-lower left support portion, 13-upper right support portion, 14-lower right support portion, 15-right raised portion, 16-left raised portion, 17-tightening portion Firmware, 18-first rotating seal, 19-second rotating seal, 20-input shaft, 21-adjusting gasket, 22-rotor locking nut, 23-step surface, 24-annular recess, 25-annular mounting groove, 26-synchronizing gear, 27-tapered roller bearing, 28-bearing mounting hole, 29-cylindrical roller bearing, 30-spacer, 31-end face, 32-circumferential portion, 33-reinforcement rib, 34-inlet, 35-outlet, 36-support seat, 37-box cover. Modes for Carrying Out the Invention

[0037] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0038] It should be understood by those skilled in the art that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0039] As shown in Figures 1 to 10, a rotor pump suitable for high viscosity is shown, comprising a rotor 1 and a rotating shaft 2, and also comprising a left bearing box 3, an intermediate pump body 4 and a right bearing box 5 connected in sequence. The left bearing box 3 is provided with two first bearing support structures 6 arranged opposite each other up and down, and the right bearing box 5 is provided with two second bearing support structures 7 arranged opposite each other up and down. The rotating shaft 2 comprises a first rotating shaft 2.1 and a second rotating shaft 2.2 arranged opposite each other up and down. The first rotating shaft 2.1 is supported by the first bearing support structure 6 and the second bearing support structure 7 located at the same height on the upper side. Similarly, the second rotating shaft 2.2 is supported by the first bearing support structure 6 and the second bearing support structure 7 located at the same height on the lower side.

[0040] As shown in Figures 4 and 6, the left and right sides of the intermediate pump body 4 are both opened, and are respectively provided with a first mating end cover 8 and a second mating end cover 9 to form a complete pump chamber 10. The left side of the intermediate pump body 4 is provided with an upper left support portion 11 and a lower left support portion 12 arranged opposite each other up and down. The first mating end cover 8 is connected between the upper left support portion 11 and the lower left support portion 12 to strengthen the upper left support portion 11 and the lower left support portion 12. The right side of the intermediate pump body 4 is provided with an upper right support portion 13 and a lower right support portion 14 arranged opposite each other up and down. The second mating end cover 9 is connected between the upper right support portion 13 and the lower right support portion 14 to strengthen the upper right support portion 13 and the lower right support portion 14.

[0041] In order to obtain a better force-bearing structure, the upper left support part 11, the lower left support part 12, the upper right support part 13 and the lower right support part 14 are all arc-shaped parts. In addition, in order to achieve structural symmetry to simplify production and manufacturing, the upper left support part 11 and the lower left support part 12 are symmetrically identical in structure, and the upper right support part 13 and the lower right support part 14 are also symmetrically identical in structure.

[0042] As shown in Figures 4, 5 and 7, the left bearing box 3 is provided with a right-side protrusion 15, which is connected between the upper left support part 11 and the lower left support part 12 and axially positions the first mating end cover 8, and the right bearing box 5 is provided with a left-side protrusion 16, which is connected between the upper right support part 13 and the lower right support part 14 and axially positions the second mating end cover 9.

[0043] As shown in Figure 2 , the right circumferential end of the left bearing housing 3 is also connected to the left upper support portion 11 and the left lower support portion 12 via fasteners 17. The left circumferential end of the right bearing housing 5 is also connected to the right upper support portion 13 and the right lower support portion 14 via fasteners 17. Figure 2 is merely an example, and only two are shown. In practice, the number can be increased depending on the required connection strength.

[0044] As shown in FIG4 , the rotor 1 is disposed between a first mating end cap 8 and a second mating end cap 9. The first mating end cap 8 is provided with a first rotary seal 18 to prevent leakage, while the second mating end cap 9 is provided with a second rotary seal 19 to prevent leakage. The first rotary seal 18 and the second rotary seal 19 are, for example, mechanical seals.

[0045] As shown in FIG4 , a synchronous gear 26 is provided on the outside of either the first rotating shaft 2.1 or the second rotating shaft 2.2 located on the left bearing box 3 or the right bearing box 5 , and either the first rotating shaft 2.1 or the second rotating shaft 2.2 serves as the input shaft 20 .

[0046] As shown in FIG1 and FIG4 , in order to protect the synchronous gear 26 , a box cover 37 is further included. The box cover 37 is different from the gear box in the prior art in that the box cover 37 is not provided with a bearing and is a non-structural force-bearing component.

[0047] As shown in FIG4 , the first bearing support structure 6 and the second bearing support structure 7 are symmetrically arranged about the middle pump body 4 , and the rotor 1 is centrally arranged between the first bearing support structure 6 and the second bearing support structure 7 . This has better load-bearing performance.

[0048] As shown in Figure 4, the first rotating shaft 2.1 and the second rotating shaft 2.2 are both connected to the rotor 1. The two rotors 1 rotate relative to each other in the pump chamber 10, sucking in substances from the inlet 34 and further rotating to deliver substances from the outlet 35, thereby forming a certain pressure and flow rate. The pump chamber 10 is surrounded by the inner circumferential surface of the intermediate pump body 4 and the inner side surface of the first matching end cover 8 and the inner side surface of the second matching end cover 9. The fitting clearance between the rotor 1 and the pump chamber 10 has a high precision. When encountering the problem of transporting substances with greater viscosity, the present disclosure is conducive to stabilizing the fitting clearance between the rotor 1 and the pump chamber 10. Even if the rotation speed of the rotating shaft 2 is increased, the fitting clearance between the rotor 1 and the pump chamber 10 is stabilized, so it can still work normally.

[0049] Furthermore, as shown in Figures 4 and 9, an adjusting washer 21 and a rotor locking nut 22 are provided on both sides of the rotor 1, respectively. The rotating shaft 2 is provided with a stepped surface 23. With the stepped surface 23 as the positioning surface, the rotor locking nut 22, the rotor 1, and the adjusting washer 21 are sequentially mounted on the rotor 1 in the axial direction. The stepped surface 23 is used to axially position the adjusting washer 21. The rotor locking nut 22 is threadedly connected to the rotor 1 to axially lock the rotor 1 on the rotating shaft 2. An annular recess 24 is provided on both sides of the rotor 1, respectively for accommodating the adjusting washer 21 and the rotor locking nut 22. This facilitates, on the one hand, the convenient adjustment of the clearance between the rotor 1 and the pump chamber 10, thereby improving the precision of the clearance, while on the other hand, it does not affect the fit between the inner side surfaces of the first mating end cap 8 and the inner side surfaces of the second mating end cap 9 and the two side surfaces of the rotor 1.

[0050] Furthermore, as shown in FIG4 , the device further includes a first rotating seal 18 and a second rotating seal 19 disposed on either side of the rotor 1. The first rotating seal 18 extends toward the rotor 1 and seals the circumference of the annular recess 24. Similarly, the second rotating seal 19 extends toward the rotor 1 and seals the circumference of the annular recess 24. This prevents the transported material from being trapped in the annular recess 24 and from solidifying and coking.

[0051] In some embodiments, as shown in Figures 4 and 10 , both the first and second mating end caps 8 and 9 are provided with an annular mounting groove 25 on one side of the rotor 1. The first rotating seal 18 is installed from one side of the annular mounting groove 25 and abuts against the left side of the rotor 1. The annular mounting groove 25 serves to axially locate the first rotating seal 18. Similarly, the second rotating seal 19 is installed from one side of the annular mounting groove 25 and abuts against the right side of the rotor 1. The annular mounting groove 25 serves to axially locate the second rotating seal 19. This facilitates manufacturing and helps achieve the purpose of sealing the annular recess 24.

[0052] In some embodiments, as shown in Figure 4 , a synchronous gear 26 is provided on the outside of the right bearing housing 5 . A second bearing support structure 7 is positioned adjacent to the synchronous gear 26 . Each second bearing support structure 7 includes two tapered roller bearings 27 positioned opposite each other, each tapered roller bearing 27 being mounted within a bearing mounting hole 28 of the right bearing housing 5 . This design allows the second bearing support structure 7 to balance axial forces. Therefore, axial forces on the rotor 1 side are offset by the second bearing support structure 7 and prevented from being further transmitted to the synchronous gear 26 . This helps ensure stable meshing of the synchronous gear 26 , allowing the synchronous gear 26 to continue to function properly even after the gearbox is eliminated. Furthermore, the proximity of the second bearing support structure 7 to the synchronous gear 26 minimizes deformation of the protruding portion of the rotating shaft 2 on the synchronous gear 26 side, facilitating smooth meshing of the synchronous gear 26 . These improvements have played a positive role in the present disclosure, improving the reliability and stability of the power input of the synchronous gear 26 , making it suitable for transporting high-viscosity materials.

[0053] In some embodiments, as shown in Figure 4, the left bearing box 3 is also provided with a bearing mounting hole 28 and is equipped with a cylindrical roller bearing 29. In this way, the cylindrical roller bearing 29 can be used to facilitate disassembly and installation.

[0054] Furthermore, the present disclosure is also designed with an excellent assembly structure, which can be used for production assembly as well as for maintenance work during product use. Specifically, the assembly structure disclosed in the present invention is roughly divided into three components, namely the first component, the second component and the third component. The first component mainly includes the left bearing box 3, the first bearing support structure 6, the first matching end cover 8, and the first rotating seal 18. The second component is mainly the intermediate pump body 4. The third component mainly includes the first rotating shaft 2.1, the second rotating shaft 2.2, the second rotating seal 19, the second matching end cover 9, the second bearing support structure 7, the right bearing box 5, the synchronous gear 26, and the box cover 37. When disassembling, it is necessary to first remove the left bearing box 3. When removing the left bearing box 3, the first bearing support structure 6 is separated from the bearing mounting hole 28. In this case, the cylindrical roller bearing 29 is separated from the bearing mounting hole 28. Then the cylindrical roller bearing 29 can be further removed from the rotating shaft 2, or the first bearing support structure 6 and the left bearing box 3 are separated from the rotating shaft 2 together. Then there will be sufficient operating space to remove the first matching end cover 8 and the first rotating seal 18. At this time, the first matching end cover 8 and the first rotating seal 1 8. The rotor 1 is inspected and repaired, and the left opening of the intermediate pump body 4 is fully open, and the rotor 1 is fully exposed at the left opening, so the pump chamber 10 and the rotor can be inspected and cleaned. If further disassembly is required, the intermediate pump body 4 can be further separated from the remaining third component along the axial direction, that is, the third component can be pulled out as a whole from the right opening of the intermediate pump body 4, so as to avoid disassembling the second matching end cover 9, the second bearing support structure 7, the synchronous gear 26, the rotor 1, and the rotating shaft 2. After the third component is pulled out as a whole, the intermediate pump body 4 can be fully inspected and cleaned, and the rotor 1 and the second matching end cover 9 can also be inspected and cleaned; if further disassembly is required, the third component can be disassembled, first remove the rotor locking nut 22, then remove the rotor 1, then remove the adjusting gasket 21, and then remove the second rotating seal 19 and the second matching end cover 9. In this way, the rotor 1, the second rotating seal 19, and the second matching end cover 9 are completely removed. At this time, there is still no need to disassemble the second bearing support structure 7 and the synchronous gear 26. As can be seen from the above, this greatly facilitates maintenance, facilitating timely inspection and repair of the rotor pump under harsh operating conditions such as conveying high-viscosity materials. This improvement is particularly important, as it facilitates inspection and cleaning of the first mating end cap 8, rotor 1, second mating end cap 9, and intermediate pump body 4, which come into direct contact with the conveyed material. If reassembly is necessary, proceed in the reverse direction. The above disassembly and assembly process can also be used during production assembly.

[0055] As shown in Figures 4 and 8, in order to adapt to the above-mentioned disassembly (i.e., assembly) structure, the positioning steps arranged on the rotating shaft 2 from right to left have a gradually larger diameter. That is to say, the second mating end cover 9, the second rotating seal 19, the adjusting gasket 21, the rotor 1, the rotor locking nut 22, the first rotating seal 18, the first mating end cover 8, and the first bearing support structure 6 are all axially installed into the rotating shaft 2 from right to left.

[0056] Furthermore, as shown in Figures 1, 2, 5, and 6, a spacer 30 is provided between the upper left support portion 11 and the lower left support portion 12. After the right circumferential end portion of the left bearing housing 3 is connected to the upper left support portion 11 and the lower left support portion 12, at least a portion of the end surface 31 of the right circumferential end portion of the left bearing housing 3 is exposed in the spacer 30. This spacer 30 allows a tool to be inserted and apply force to the end surface 31 for easy removal. This design makes it easier to remove the left bearing housing 3, significantly contributing to the convenience of the aforementioned maintenance.

[0057] Of course, a gap 30 may also be provided between the right upper support portion 13 and the right lower support portion 14. After the left circumferential end portion of the right bearing housing 5 is connected to the right upper support portion 13 and the right lower support portion 14, at least a portion of the end surface 31 of the left circumferential end portion of the right bearing housing 5 is exposed in the gap 30. This gap 30 allows a tool to be inserted and apply force to the end surface 31 for easy removal. This design facilitates removal of the third component, or in other words, facilitates axial separation of the intermediate pump body 4 from the right bearing housing 5.

[0058] In some embodiments, as shown in Figures 1, 2, 3, and 4, the portion of the intermediate pump body 4 located between the first mating end cap 8 and the second mating end cap 9 is a circumferential portion 32. A plurality of axially arranged reinforcing ribs 33 are provided along the circumference of the circumferential portion 32. The ends of the upper reinforcing ribs 33 are connected to the upper left support portion 11 and the upper right support portion 13, respectively. Similarly, the ends of the lower reinforcing ribs 33 are connected to the lower left support portion 12 and the lower right support portion 14, respectively. An inlet 34 and an outlet 35 are provided in the portion between the upper and lower sides of the intermediate pump body 4, respectively. A support seat 36 is also provided on the lower side of the intermediate pump body 4. This improves the strength of the intermediate pump body 4, further enhancing the strength of the upper left support portion 11, the upper right support portion 13, the lower left support portion 12, and the lower right support portion 14. Furthermore, it also helps improve heat dissipation performance. Furthermore, the support seat 36 evenly distributes the force received from both sides of the intermediate pump body 4, providing good support.

[0059] Furthermore, as shown in FIG2 and FIG6 , the support seat 36 is provided with an arc-shaped support structure extending in an arc shape toward both sides of the intermediate pump body 4 . The arc-shaped support structure is symmetrically arranged about the intermediate pump body 4 , thereby having better mechanical properties.

[0060] When understanding the present disclosure, if necessary, the above structure can be understood with reference to other embodiments / drawings, and will not be described in detail here.

[0061] The above description is merely an illustrative embodiment of the present invention, and therefore any equivalent changes or modifications made according to the structure, features and principles described in the patent protection scope of the present invention are included in the patent protection scope of the present invention.

Claims

1. A rotor pump suitable for high viscosity, comprising a rotor (1) and a rotating shaft (2), characterized in that: The pump also includes a left bearing box (3), an intermediate pump body (4), and a right bearing box (5) connected in sequence along the axial direction. The left bearing box (3) is provided with two first bearing support structures (6) arranged vertically opposite to each other. The right bearing box (5) is provided with two second bearing support structures (7) arranged vertically opposite to each other. The rotating shaft (2) includes a first rotating shaft (2.1) and a second rotating shaft (2.2) arranged vertically opposite to each other. The first rotating shaft (2.1) is supported by the first bearing support structure (6) and the second bearing support structure (7) located at the same height on the upper side. Similarly, the second rotating shaft (2.2) is supported by the first bearing support structure (6) and the second bearing support structure (7) located at the same height on the lower side. The rotor (1) is supported by a first bearing support structure (6) and a second bearing support structure (7); the rotor (1) is arranged between the first bearing support structure (6) and the second bearing support structure (7), and the rotor (1) is directly supported on both sides of the rotor (1) by the first bearing support structure (6) and the second bearing support structure (7); the first rotating shaft (2.1) and the second rotating shaft (2.2) are provided with a synchronous gear (26) on the outside of any one of the left bearing box (3) and the right bearing box (5); and any one of the first rotating shaft (2.1) and the second rotating shaft (2.2) serves as an input shaft (20).

2. The rotor pump suitable for high viscosity according to claim 1, characterized in that: The left and right sides of the middle pump body (4) are both opened and respectively provided with a first matching end cover (8) and a second matching end cover (9) to form a complete pump chamber (10); the left side of the middle pump body (4) is provided with a left upper support portion (11) and a left lower support portion (12) arranged vertically opposite to each other; the first matching end cover (8) is connected between the left upper support portion (11) and the left lower support portion (12) to reinforce the left upper support portion (11) and the left lower support portion (12); the right side of the middle pump body (4) is provided with a right upper support portion (13) and a right lower support portion (14) arranged vertically opposite to each other; the second matching end cover (9) is connected between the right upper support portion (13) and the right lower support portion (14) to reinforce the right upper support portion (13) and the right lower support portion (14); The left bearing box (3) is provided with a right side raised portion (15), the right side raised portion (15) is connected between the left upper support portion (11) and the left lower support portion (12) and axially positions the first mating end cover (8), and the right bearing box (5) is provided with a left side raised portion (16), the left side raised portion (16) is connected between the right upper support portion (13) and the right lower support portion (14) and axially positions the second mating end cover (9); The right circumferential end of the left bearing box (3) is also connected to the left upper support portion (11) and the left lower support portion (12) via a fastener (17), and the left circumferential end of the right bearing box (5) is also connected to the right upper support portion (13) and the right lower support portion (14) via a fastener (17); The rotor (1) is arranged between a first mating end cover (8) and a second mating end cover (9); the first mating end cover (8) is provided with a first rotating seal (18) to prevent leakage; and the second mating end cover (9) is provided with a second rotating seal (19) to prevent leakage.

3. The rotor pump suitable for high viscosity according to claim 1 or 2, characterized in that: An adjusting washer (21) and a rotor locking nut (22) are respectively provided on both sides of the rotor (1), and the rotating shaft (2) is provided with a step surface (23). The step surface (23) is used as a positioning surface. The rotor locking nut (22), the rotor (1), and the adjusting washer (21) are sequentially mounted on the rotor (1) along the axial direction. The step surface (23) is used to axially position the adjusting washer (21). The rotor locking nut (22) is threadedly connected to the rotor (1) to axially lock the rotor (1) on the rotating shaft (2). An annular recess (24) is provided on both sides of the rotor (1), and the annular recess (24) is used to respectively accommodate the adjusting washer (21) and the rotor locking nut (22).

4. The rotor pump suitable for high viscosity according to claim 3, characterized in that: The invention also includes a first rotating seal (18) and a second rotating seal (19) arranged on both sides of the rotor (1), wherein the first rotating seal (18) extends toward one side of the rotor (1) and seals the circumference of the annular recess (24), and similarly, the second rotating seal (19) extends toward one side of the rotor (1) and seals the circumference of the annular recess (24).

5. The rotor pump suitable for high viscosity according to claim 2, characterized in that: The first mating end cover (8) and the second mating end cover (9) are both provided with an annular mounting groove (25) on one side of the rotor (1). The first rotating seal (18) is installed from one side of the annular mounting groove (25) and abuts against the left side of the rotor (1). The annular mounting groove (25) plays an axial positioning role for the first rotating seal (18). Similarly, the second rotating seal (19) is installed from one side of the annular mounting groove (25) and abuts against the right side of the rotor (1). The annular mounting groove (25) plays an axial positioning role for the second rotating seal (19).

6. The rotor pump suitable for high viscosity according to claim 2, characterized in that: A synchronous gear (26) is provided on the outer side of the right bearing box (5), and the second bearing support structure (7) is arranged adjacent to the synchronous gear (26). In addition, each second bearing support structure (7) includes two tapered roller bearings (27) arranged opposite to each other, and each tapered roller bearing (27) is mounted in a bearing mounting hole (28) of the right bearing box (5).

7. The rotor pump suitable for high viscosity according to claim 6, characterized in that: The left bearing box (3) is also provided with a bearing mounting hole (28) and is equipped with a cylindrical roller bearing (29).

8. The rotor pump suitable for high viscosity according to claim 2 or 7, characterized in that: A gap (30) is provided between the upper left support portion (11) and the lower left support portion (12), and after the right circumferential end portion of the left bearing box (3) is connected to the upper left support portion (11) and the lower left support portion (12), at least a portion of the end surface (31) of the right circumferential end portion of the left bearing box (3) is exposed in the gap (30), and the gap (30) allows a tool to be inserted so that the tool can apply force on the end surface (31) for easy removal, and / or a gap (30) is also provided between the upper right support portion (13) and the lower right support portion (14), and after the left circumferential end portion of the right bearing box (5) is connected to the upper right support portion (13) and the lower right support portion (14), at least a portion of the end surface (31) of the left circumferential end portion of the right bearing box (5) is exposed in the gap (30), and the gap (30) allows a tool to be inserted so that the tool can apply force on the end surface (31) for easy removal.

9. The rotor pump suitable for high viscosity according to claim 1, characterized in that: The first bearing support structure (6) and the second bearing support structure (7) are arranged symmetrically with respect to the middle pump body (4), and the rotor (1) is centrally arranged between the first bearing support structure (6) and the second bearing support structure (7).

10. The rotor pump suitable for high viscosity according to claim 2, characterized in that: The portion of the intermediate pump body (4) located between the first mating end cover (8) and the second mating end cover (9) is a circumferential portion (32). The circumferential portion (32) is provided with a plurality of axially arranged reinforcing ribs (33) along its circumference, and the two ends of the reinforcing rib (33) located on the upper side are respectively connected to the upper left support portion (11) and the upper right support portion (13). Similarly, the two ends of the reinforcing rib (33) located on the lower side are respectively connected to the lower left support portion (12) and the lower right support portion (14). The portion between the upper side and the lower side of the intermediate pump body (4) is provided with an inlet (34) and an outlet (35). The lower side of the intermediate pump body (4) is also provided with a support seat (36).

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