Centrifugal pump with self-disassembly function

Abstract

The application discloses a centrifugal pump with a self-disassembly function, comprising a pump body and a disassembly assembly, the pump body comprises multiple middle sections, the multiple middle sections are arranged in parallel along the axial direction of the pump body, and the multiple middle sections are spliced to form part of the pump body; the disassembly assembly comprises multiple chucks arranged in parallel and at intervals, the chucks are sleeved on the outer circumferential side of any middle section, the multiple chucks comprise a first disc and a second disc, the first disc can abut against any one of the middle sections, the second disc can abut against another one of the middle sections, and the spacing between the first disc and the second disc is adjustable, so that the multiple middle sections can be disassembled. The centrifugal pump with the self-disassembly function has the advantages of convenient disassembly.

Description

Technical Field

[0001] This invention relates to the field of liquid conveying equipment technology, and more specifically, to an impeller pump with a self-disassembly function. Background Technology

[0002] A multistage centrifugal pump consists of multiple impellers arranged in parallel along an axis. It pressurizes the liquid entering the inlet through multiple stages before discharging it from the outlet. During operation, multistage centrifugal pumps require disassembly to inspect the internal impellers and address issues such as impeller blockage and misalignment. The maintenance efficiency of centrifugal pumps in related technologies is relatively low. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a centrifugal pump with a self-disassembly function, which has the advantage of being easy to assemble and disassemble.

[0004] The centrifugal pump with self-disassembly function according to an embodiment of the present invention includes a pump body, the pump body including multiple intermediate sections, the multiple intermediate sections being arranged side by side along the axial direction of the pump body, and the multiple intermediate sections being spliced ​​together to form a portion of the pump body; and a disassembly assembly, the disassembly assembly including multiple chucks arranged in parallel at intervals, the chucks being sleeved on the outer periphery of any of the intermediate sections, the multiple chucks including a first disc and a second disc, the first disc being able to abut against any one of the intermediate sections, the second disc being able to abut against the other of the intermediate sections, the distance between the first disc and the second disc being adjustable to disassemble the multiple intermediate sections.

[0005] The centrifugal pump with self-disassembly function in this embodiment of the invention has the advantage of being easy to disassemble and assemble.

[0006] In some embodiments, a protrusion is provided on the outer periphery of the middle section, the protrusion can abut against any end face of the chuck, and an avoidance groove is provided on the inner edge of the chuck to allow the protrusion to pass through the chuck.

[0007] In some embodiments, the outer periphery of the middle section is provided with a plurality of protrusions, which are evenly spaced along the outer periphery of the middle section. The inner edge of the chuck is provided with a plurality of clearance grooves, which are arranged to correspond one-to-one with the plurality of protrusions.

[0008] In some embodiments, the chuck includes an annular portion and an annular flange. The annular portion is movably fitted onto the outer periphery of the middle section. The clearance groove is provided on the annular portion. The annular flange is provided on the outer edge of the annular portion. The annular flange extends circumferentially closed along the annular portion and protrudes axially along the annular portion.

[0009] In some embodiments, the plurality of middle sections include a first section and a second section, wherein the first disc may abut against a protrusion of the first section facing the second section, and the second disc may abut against a protrusion of the second section facing the first section.

[0010] In some embodiments, the disassembly assembly further includes a threaded rod, a first nut, and a second nut. The threaded rod passes through the first disc and the second disc along the axial direction of the pump body. The first nut is threaded onto the threaded rod and abuts against the end of the first disc facing the second disc. The second nut is threaded onto the threaded rod and abuts against the end of the second disc facing the first disc.

[0011] In some embodiments, there are multiple threaded rods, which are evenly spaced along the outer periphery of the middle section. There are multiple first nuts and multiple second nuts, with each first nut and each threaded rod corresponding to the other.

[0012] In some embodiments, the pump body further includes an inlet section and an outlet section, a plurality of intermediate sections are disposed between the inlet section and the outlet section, and the disassembly assembly can be connected between the inlet section and the outlet section. The spacing between the inlet section and the outlet section is adjustable so that the plurality of intermediate sections can be spliced ​​between the inlet section and the outlet section.

[0013] In some embodiments, the inlet section is provided with a first support, the outlet section is provided with a second support, the threaded rod can pass through the first support and the second support, and the threaded rod is also provided with a third nut and a fourth nut. The third nut is located on the side of the first support away from the middle section, and the fourth nut is located on the side of the second support away from the middle section.

[0014] In some embodiments, there are multiple first supports, and the multiple first supports are arranged in a one-to-one correspondence with the multiple threaded rods; there are multiple second supports, and the multiple second supports are arranged in a one-to-one correspondence with the multiple threaded rods. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a centrifugal pump with self-disassembly function according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the disassembly and assembly components of a centrifugal pump with self-disassembly function according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the chuck of a centrifugal pump with self-disassembly function according to an embodiment of the present invention.

[0018] Figure label:

[0019] Pump body 1; middle section 11; protrusion 111; first section 101; second section 102; liquid inlet section 12; first support 121;

[0020] Assembly / disassembly component 2; threaded rod 21; chuck 22; annular part 221; annular flange 222; clearance groove 223; through hole 224; first disc 201; second disc 202; first nut 23; second nut 24. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] The following is combined with Figure 1 , Figure 2 and Figure 3 A centrifugal pump with self-disassembly function is described according to an embodiment of the present invention.

[0023] The centrifugal pump with self-disassembly function in this embodiment of the invention includes a pump body 1 and a disassembly assembly 2.

[0024] The pump body 1 includes multiple intermediate sections 11, which are arranged side by side along the axial direction of the pump body 1, and the multiple intermediate sections 11 are spliced ​​together to form part of the pump body 1.

[0025] Specifically, the multiple intermediate sections 11 are annular structures, and the interior of the intermediate section 11 is equipped with multi-stage impellers. The axis of the intermediate section 11 extends in the front-to-back direction, and the multiple intermediate sections 11 are arranged side by side in the front-to-back direction. The multiple intermediate sections 11 are assembled to form part of the pump body 1. Adjacent intermediate sections 11 are sealed and connected, and the multiple intermediate sections 11 are fitted on the outer periphery of the impeller.

[0026] The disassembly and assembly component 2 includes multiple chucks 22 arranged in parallel at intervals. The chucks 22 are fitted onto the outer periphery of any middle section 11. The multiple chucks 22 include a first disc 201 and a second disc 202. The first disc 201 can abut against one of the middle sections 11, and the second disc 202 can abut against the other of the middle sections 11. The distance between the first disc 201 and the second disc 202 is adjustable to disassemble the multiple middle sections 11.

[0027] Specifically, the disassembly and assembly component 2 is located on the outer periphery of the middle section 11, and the disassembly and assembly component 2 can be connected to the outer surface of the middle section 11. The disassembly and assembly component 2 includes multiple chucks 22. The chucks 22 are annular structures and the axis of the chucks 22 extends in the front-back direction. The inner diameter of the chucks 22 is slightly larger than the outer diameter of the middle section 11, so that the chucks 22 can move relative to the middle section 11 in the front-back direction, and the chucks 22 can rotate relative to the middle section 11 in the circumferential direction. The outer diameter of the middle section 11 at a set position is larger than the inner diameter of the chucks 22 at a set position, so that the chucks 22 can abut against the front and rear ends of the middle section 11.

[0028] The spacing between the multiple chucks 22 is adjustable. The first chuck 201 is located in front of the second chuck 202. The first chuck 201 abuts against the rear end face of any middle section 11, and the second chuck 202 abuts against the front end face of any middle section 11 behind the first chuck 201. By increasing the spacing between the first chuck 201 and the second chuck 202, the middle section 11 corresponding to the first chuck 201 and the middle section 11 corresponding to the second chuck 202 can be separated, thereby achieving the effect of disassembling multiple middle sections 11.

[0029] The centrifugal pump with self-disassembly function in this embodiment of the invention has a disassembly assembly 2 on the outer side of multiple intermediate sections 11. The disassembly assembly 2 includes a first disc 201 and a second disc 202, which can respectively abut against any two intermediate sections 11. By adjusting the distance between the first disc 201 and the second disc 202, the distance between the two intermediate sections 11 is increased, thereby realizing the disassembly of multiple intermediate sections 11 of the pump body 1. Compared with the related technology of disassembling multiple intermediate sections 11 by using tools such as pry bars, the disassembly assembly 2 of the centrifugal pump in this embodiment of the invention extends the force on the intermediate sections 11 along the axial direction of the intermediate sections 11 when disassembling multiple intermediate sections 11, reducing the radial deformation of the multiple intermediate sections 11 during the disassembly process, thereby improving the sealing performance of the centrifugal pump in this embodiment of the invention, and has the advantage of being easy to disassemble and assemble.

[0030] In some embodiments, the outer periphery of the middle section 11 is provided with a protrusion 111, which can abut against any end face of the chuck 22. The inner edge of the chuck 22 is provided with a relief groove 223 so that the protrusion 111 can pass through the chuck 22.

[0031] Preferably, the outer periphery of the middle section 11 is provided with a plurality of protrusions 111, which are evenly spaced along the outer periphery of the middle section 11. The inner edge of the chuck 22 is provided with a plurality of clearance grooves 223, which can be arranged in a one-to-one correspondence with the plurality of protrusions 111.

[0032] Specifically, the protrusions 111 are provided on the outer periphery of the middle section 11, and the multiple protrusions 111 on a single middle section 11 are evenly spaced along the circumference of the middle section 11. The number of protrusions 111 on the multiple middle sections 11 is the same. There are multiple clearance grooves 223. The number of clearance grooves 223 on a single chuck 22 is the same as the number of protrusions 111 on a single middle section 11. The shape of the clearance groove 223 is the same as the shape of the protrusion 111, and the size of the clearance groove 223 is slightly larger than the size of the protrusion 111 so that the protrusion 111 can pass through the clearance groove 223.

[0033] Thus, the protrusions 111 on the middle section 11 are arranged in a one-to-one correspondence with the clearance grooves 223 on the chuck 22, allowing the chuck 22 to move between the front and rear sides of a single middle section 11. Furthermore, the inner diameter of the chuck 22 is slightly larger than the outer diameter of the middle section 11, allowing the chuck 22 to rotate circumferentially along the middle section 11. This causes the clearance grooves 223 of the chuck 22 and the protrusions 111 of the middle section 11 to rotate from a one-to-one correspondence to a non-correspondence, thereby allowing the chuck 22 to abut against the front end or the rear end of the middle section 11.

[0034] In some embodiments, the chuck 22 includes an annular portion 221 and an annular flange 222. The annular portion 221 is movably fitted onto the outer periphery of the middle section 11. A clearance groove 223 is provided on the annular portion 221. The annular flange 222 is provided on the outer edge of the annular portion 221. The annular flange 222 extends circumferentially around the annular portion 221 and protrudes axially along the annular portion 221.

[0035] Specifically, the annular portion 221 extends in a plane perpendicular to the front-back direction, and the annular flange 222 extends in the front-back direction. The inner edge of the annular flange 222 is connected to the outer edge of the annular portion 221 to improve the structural strength of the chuck 22. When the chuck 22 abuts against one end of the middle section 11, the force exerted by the chuck 22 on the multiple protrusions 111 on the middle section 11 is the same. As a result, when the chuck 22 abuts against the middle section 11, the force on the middle section 11 extends in the front-back direction, so as to facilitate the disassembly of the multiple middle sections 11.

[0036] In some embodiments, the plurality of middle sections 11 include a first section 101 and a second section 102, the first disc 201 abutting against the protrusion 111 of the first section 101 facing the side of the second section 102, and the second disc 202 abutting against the protrusion 111 of the second section 102 facing the side of the first section 101.

[0037] Specifically, the first segment 101 is located in front of the second segment 102, the first disc 201 abuts against the rear end face of the first segment 101, and the second disc 202 abuts against the front end face of the second segment 102.

[0038] Therefore, when the distance between the first plate 201 and the second plate 202 increases, the distance between the first segment 101 and the second segment 102 in the front-back direction can be increased, thereby separating the first segment 101 and the second segment 102, realizing the disassembly of multiple middle segments 11, and having a high disassembly efficiency.

[0039] In some embodiments, the disassembly assembly 2 further includes a threaded rod 21, a first nut 23, and a second nut 24. The threaded rod 21 passes through the first disc 201 and the second disc 202 along the axial direction of the pump body 1. The first nut 23 is threadedly fitted to the threaded rod 21 and abuts against the end of the first disc 201 facing the second disc 202. The second nut 24 is threadedly fitted to the threaded rod 21 and abuts against the end of the second disc 202 facing the first disc 201.

[0040] Specifically, the threaded rod 21 extends in the front-to-back direction, and the nominal dimensions of the first nut 23 and the second nut 24 are the same as the nominal dimensions of the threaded rod 21, so that the first nut 23 and the second nut 24 can be threaded onto the threaded rod 21. By rotating the first nut 23 and the second nut 24, the first nut 23 and the second nut 24 can be driven to move along the length direction of the threaded rod 21.

[0041] The front end face of the first nut 23 abuts against the rear end face of the first disc 201, and the rear end face of the second nut 24 abuts against the front end face of the second disc 202. When the first nut 23 is rotated to drive the first nut 23 to move forward, the second nut 24 is rotated in the opposite direction to drive the second nut 24 to move backward, thereby increasing the distance between the first nut 23 and the second nut 24, and thus increasing the distance between the first disc 201 and the second disc 202, thereby disassembling the first segment 101 and the second segment 102.

[0042] The first disc 201 and the second disc 202 are driven to move apart by the first nut 23 and the second nut 24, so as to disassemble the first disc 201 and the second disc 202. The first disc 201 and the second disc 202 are respectively subjected to forces in the front-back direction by the first nut 23 and the second nut 24 being screwed on the threaded rod 21.

[0043] Therefore, on the one hand, the threaded nut connection can bear a large radial reaction force, so as to apply a large external force to the first disc 201 and the second disc 202 to disassemble the multiple intermediate sections 11. On the other hand, the first disc 201 and the second disc 202 are moved by screwing the nut on the threaded rod 21, so that there is no impact load on the force applied to the intermediate sections 11, thereby protecting the sealing structure at the connection of two adjacent intermediate sections 11 and improving the sealing performance of the centrifugal pump of the present invention after disassembly and assembly.

[0044] In some embodiments, there are multiple threaded rods 21, which are evenly spaced along the outer periphery of the middle section 11. There are multiple first nuts 23 and multiple second nuts 24. The multiple first nuts 23 are arranged in a one-to-one correspondence with the multiple threaded rods 21, and the multiple second nuts 24 are arranged in a one-to-one correspondence with the multiple threaded rods 21.

[0045] Specifically, the chuck 22 is provided with a plurality of through holes 224, the diameter of which is larger than the outer diameter of the threaded rod 21, so that the threaded rod 21 can pass through the chuck 22 in the front-back direction. The plurality of through holes 224 are evenly spaced along the circumference of the chuck 22, and the plurality of threaded rods 21 are arranged in a one-to-one correspondence with the plurality of through holes 224.

[0046] There are multiple first nuts 23 and multiple second nuts 24. Each of the multiple first nuts 23 corresponds to a multiple threaded rod 21, and each of the multiple second nuts 24 corresponds to a multiple threaded rod 21. When disassembling the multiple intermediate sections 11, the multiple first nuts 23 are first rotated by a set angle in a set direction, and then the multiple second nuts 24 are rotated by a set angle in the opposite direction of the set direction.

[0047] When disassembling multiple intermediate sections 11, the contact point between the first nut 23 and the first disc 201 is the stress point of the first disc 201, and the contact point between the second nut 24 and the second disc 202 is the stress point of the second disc 202. Multiple first nuts 23 are evenly spaced along the circumference of the first disc 201, and multiple second nuts 24 are evenly spaced along the circumference of the second disc 202, so that the stress points of the first disc 201 are evenly distributed along the circumference of the first disc 201, and the stress points of the second disc 202 are evenly distributed along the circumference of the second disc 202.

[0048] Therefore, on the one hand, when disassembling multiple middle sections 11, the force-bearing positions of the first section 101 and the second section 102 are evenly distributed along the circumference, which improves the structural stability of the disassembly and assembly component 2. On the other hand, the force exerted on the first section 101 and the second section 102 by the disassembly and assembly component 2 extends along the front-back direction, which avoids damage to the sealing structure between the first section 101 and the second section 102 due to uneven force. In addition to the advantage of easy disassembly, the centrifugal pump of the present invention improves the sealing performance of the centrifugal pump after disassembly and assembly.

[0049] In some embodiments, the pump body 1 further includes an inlet section 12 and a outlet section (not shown in the figure), a plurality of intermediate sections 11 are disposed between the inlet section 12 and the outlet section, and the disassembly assembly 2 can be connected between the inlet section 12 and the outlet section. The spacing between the inlet section 12 and the outlet section is adjustable so that the plurality of intermediate sections 11 can be spliced ​​between the inlet section 12 and the outlet section.

[0050] Specifically, the inlet section 12 is located behind the plurality of intermediate sections 11 and is sealed to the last of the plurality of intermediate sections 11. The outlet section is located in front of the plurality of intermediate sections 11 and is sealed to the foremost of the plurality of intermediate sections 11, so that liquid can pass through the plurality of intermediate sections 11. The disassembly and assembly assembly 2 is connected between the inlet section 12 and the outlet section. The inlet section 12 and the outlet section can move back and forth along the threaded rod 21 of the disassembly and assembly assembly 2. When the distance between the inlet section 12 and the outlet section decreases, the plurality of intermediate sections 11 are clamped between the inlet section 12 and the outlet section, thus completing the assembly of the inlet section 12, the plurality of intermediate sections 11 and the outlet section.

[0051] Therefore, the inlet section 12 and the outlet section can move along the threaded rod 21, providing good guidance in the front-back direction. When the inlet section 12 and the outlet section are spliced ​​on the front and back sides of multiple intermediate sections 11, the force between the inlet section 12 and the intermediate section 11 is evenly distributed along the circumference of the intermediate section 11, and the force between the outlet section and the intermediate section 11 is also evenly distributed along the circumference of the intermediate section 11. This avoids damaging the sealing structure between the inlet section 12 and the intermediate section 11, and the sealing structure between the outlet section and the intermediate section 11, so that the centrifugal pump of this embodiment of the invention has the advantage of maintaining high sealing performance after disassembly and assembly.

[0052] In some embodiments, the inlet section 12 is provided with a first support 121, and the outlet section is provided with a second support (not shown in the figure). The threaded rod 21 can pass through the first support 121 and the second support. The threaded rod 21 is also provided with a third nut (not shown in the figure) and a fourth nut (not shown in the figure). The third nut is located on the side of the first support 121 away from the middle section 11, and the fourth nut is located on the side of the second support away from the middle section 11.

[0053] Specifically, the first support 121 is provided in the liquid inlet section 12 and the second support is provided in the liquid outlet section, and the first support 121 and the second support are arranged correspondingly in the front-back direction. The threaded rod 21 can pass through the first support 121 and the corresponding second support (not shown in the figure) so that the liquid inlet section 12 and the liquid outlet section can move along the extension direction of the threaded rod 21, thereby improving the guiding performance of the liquid inlet section 12 and the liquid outlet section when installed in the middle section 11.

[0054] The third nut is located on the rear side of the first support 121 and is threaded onto the threaded rod 21. The fourth nut is located on the front side of the second support and is threaded onto the threaded rod 21. When the third nut and the fourth nut rotate in opposite directions, the distance between the third nut and the fourth nut can be reduced. When the third nut presses against the front end face of the first support 121 and the fourth nut presses against the rear end face of the second support, the distance between the liquid inlet section 12 and the liquid outlet section can be reduced, thereby pressing the liquid inlet section 12 and the liquid outlet section onto multiple intermediate sections 11, completing the assembly of the liquid inlet section 12, multiple intermediate sections 11 and the liquid outlet section.

[0055] Therefore, compared to related technologies that use external forces such as hammering to assemble the inlet section 12 and the outlet section respectively, the centrifugal pump of this embodiment uses a nut tightened along the threaded rod 21 to press the inlet section 12 and the outlet section 11 together. On the one hand, the threaded nut connection can withstand a large radial reaction force, so as to apply a large axial force to the inlet section 12, the multiple intermediate sections 11 and the outlet section to press them together. On the other hand, by moving the inlet section 12 and the outlet section by screwing the nut onto the threaded rod 21, the force exerted by the inlet section 12 and the outlet section on the outlet section 11 does not have an impact load, thereby protecting the sealing structure between the inlet section 12 and the outlet section 11, and the sealing structure between the outlet section and the outlet section 11, thus improving the sealing performance of the centrifugal pump of this embodiment after disassembly and assembly.

[0056] In some embodiments, there are multiple first supports 121, and the multiple first supports 121 are arranged in a one-to-one correspondence with multiple threaded rods 21; there are multiple second supports, and the multiple second supports are arranged in a one-to-one correspondence with multiple threaded rods 21.

[0057] Specifically, multiple first supports 121 are evenly arranged along the circumference of the liquid inlet section 12, and multiple second supports are evenly spaced along the circumference of the liquid outlet section. The multiple first supports 121 and multiple second supports correspond one-to-one in the front-back direction, so that multiple threaded rods 21 pass through the first support 121 and the corresponding second support one-to-one.

[0058] There are multiple third nuts and multiple fourth nuts, with multiple third nuts arranged in a one-to-one correspondence with multiple threaded rods 21, and multiple fourth nuts arranged in a one-to-one correspondence with multiple threaded rods 21.

[0059] When disassembling the inlet section 12 and the outlet section, the contact point between the third nut and the inlet section 12 is the stress point of the inlet section 12, and the contact point between the fourth nut and the outlet section is the stress point of the outlet section. Multiple third nuts are evenly spaced along the circumference of the inlet section 12, and multiple fourth nuts are evenly spaced along the circumference of the outlet section, so that the stress points of the inlet section 12 are evenly distributed along the circumference of the inlet section 12, and the stress points of the outlet section are evenly distributed along the circumference of the outlet section.

[0060] Therefore, on the one hand, when disassembling the inlet section 12 and the outlet section, the force on the inlet section 12 and the outlet section is evenly distributed along the circumference, which improves the structural stability of the disassembly and assembly component 2. On the other hand, the force exerted on the inlet section 12 and the outlet section by the disassembly and assembly component 2 extends along the front-back direction, which avoids damage to the sealing structure between the inlet section 12 and the middle section 11, and the sealing structure between the outlet section and the middle section 11 due to uneven force. In this embodiment of the invention, the centrifugal pump has the advantage of easy disassembly, while improving the sealing performance of the centrifugal pump after disassembly and assembly.

[0061] In some embodiments, a fifth nut (not shown) and a sixth nut (not shown) are also mounted on the threaded rod 21. The fifth nut is located on the front side of the first support 121, and the sixth nut is located on the rear side of the second support. When the fifth nut and the sixth nut are rotated in opposite directions, the distance between the fifth nut and the sixth nut can be increased. When the fifth nut abuts against the front end face of the first support 121 and the sixth nut abuts against the rear end face of the second support, the distance between the liquid inlet section 12 and the liquid outlet section can be increased by rotating the fifth nut and the sixth nut in opposite directions, so as to disassemble the liquid inlet section 12 and the liquid outlet section from the plurality of intermediate sections 11.

[0062] It is understandable that the inlet section 12 and the outlet section are removed from the multiple intermediate sections 11 by means of the fifth and sixth nuts. On the one hand, the threaded nut connection can bear a large radial reaction force, so as to apply a large external force to the inlet section 12 and the outlet section to disassemble the multiple intermediate sections 11. On the other hand, the inlet section 12 and the outlet section are moved by screwing the nuts into the threaded rod 21. There is no impact load on the force applied to the intermediate sections 11, so as to protect the sealing structure between the inlet section 12 and the intermediate sections 11, and the sealing structure between the outlet section and the intermediate sections 11, thereby improving the sealing performance of the centrifugal pump of the present invention after disassembly and assembly.

[0063] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A centrifugal pump with a self-disassembly function, characterized in that, include: The pump body includes multiple intermediate sections, which are arranged side by side along the axial direction of the pump body, and the multiple intermediate sections are spliced ​​together to form part of the pump body; The assembly / disassembly component includes a plurality of parallel spaced chucks, each chuck being fitted onto the outer periphery of any of the middle sections. Each chuck includes a first chuck and a second chuck. The first chuck can abut against one of the middle sections, and the second chuck can abut against the other of the middle sections. The distance between the first chuck and the second chuck is adjustable to separate the plurality of middle sections. The outer periphery of the middle section is provided with a protrusion, which can abut against any end face of the chuck. The inner edge of the chuck is provided with a clearance groove so that the protrusion can pass through the chuck. The disassembly and assembly assembly also includes a threaded rod, a first nut, and a second nut. The threaded rod passes through the first disc and the second disc along the axial direction of the pump body. The first nut is threaded onto the threaded rod and abuts against the end of the first disc facing the second disc. The second nut is threaded onto the threaded rod and abuts against the end of the second disc facing the first disc.

2. The centrifugal pump with self-disassembly function according to claim 1, characterized in that, The outer periphery of the middle section is provided with a plurality of protrusions, which are evenly spaced along the outer periphery of the middle section. The inner edge of the chuck is provided with a plurality of clearance grooves, which can be arranged one-to-one with the plurality of protrusions.

3. The centrifugal pump with self-disassembly function according to claim 2, characterized in that, The chuck includes an annular portion and an annular flange. The annular portion is movably fitted onto the outer periphery of the middle section. The clearance groove is provided on the annular portion. The annular flange is provided on the outer edge of the annular portion. The annular flange extends circumferentially and protrudes axially along the annular portion.

4. The centrifugal pump with self-disassembly function according to claim 1, characterized in that, The plurality of middle sections include a first section and a second section, wherein the first disc may abut against the protrusion of the first section on the side facing the second section, and the second disc may abut against the protrusion of the second section on the side facing the first section.

5. The centrifugal pump with self-disassembly function according to claim 1, characterized in that, There are multiple threaded rods, which are evenly spaced along the outer periphery of the middle section. There are multiple first nuts and multiple second nuts, with each first nut and each threaded rod corresponding to the other.

6. The centrifugal pump with self-disassembly function according to claim 5, characterized in that, The pump body further includes an inlet section and an outlet section, and a plurality of intermediate sections are disposed between the inlet section and the outlet section. The disassembly assembly can be connected between the inlet section and the outlet section. The spacing between the inlet section and the outlet section is adjustable so that the plurality of intermediate sections can be spliced ​​between the inlet section and the outlet section.

7. The centrifugal pump with self-disassembly function according to claim 6, characterized in that, The liquid inlet section is provided with a first support, the liquid outlet section is provided with a second support, the threaded rod can pass through the first support and the second support, and the threaded rod is also provided with a third nut and a fourth nut. The third nut is located on the side of the first support away from the middle section, and the fourth nut is located on the side of the second support away from the middle section.

8. The centrifugal pump with self-disassembly function according to claim 7, characterized in that, There are multiple first supports, and each of the multiple first supports is arranged in a one-to-one correspondence with a multiple of the threaded rods. There are also multiple second supports, and each of the multiple second supports is arranged in a one-to-one correspondence with a multiple of the threaded rods.

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