Vertical rotary shell pump with independent bearing bracket

Abstract

The utility model discloses a vertical rotating shell pump with an independent bearing bracket, which comprises a pump shell, a first bearing bracket, a second bearing bracket, a first bearing bracket and a second bearing bracket, the pump cover plate is connected to the top of the pump shell, a first stepped through hole is formed in the middle of the pump cover plate, and the first stepped through hole is aligned and communicated with the first inner cavity; the sealing structural part is connected between the pump cover plate and the pump shell; one end of the impeller assembly is connected to the other end of the sealing structural part; one end of the liquid collecting pipe is connected with the pump shell and communicated with the liquid outlet channel, an interval space is formed between the middle part and the sealing structural part, and the other end extends into the impeller assembly; the supporting frame is provided with a bearing, and the independent bearing frame is provided with a radial bearing and a thrust bearing and is connected with the pump cover plate and the pump shell; the defect that axial force generated by rotating fluid and the self weight of a rotor is borne by a radial bearing of the motor when a traditional rotating shell pump operates is overcome, and the problems that a vertical rotating shell pump set motor bearing is high in temperature rise, high in failure rate, short in service life and high in operation and maintenance cost are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, in particular to a vertical volute pump with an independent bearing frame. Background Art

[0002] The rotary casing pump, also known as the rotary jet pump or the pitot tube pump, is a small-flow, high-pressure pump with broad application prospects in the chemical, metallurgical, food, papermaking, printing and dyeing industries. It is used to transport liquid media such as water, oil, acid, and alkali.

[0003] For example, the Chinese patent application number is 201520568771.0, and the subject name of the patent is the prior art of large-flow volute pump. The impeller composed of an upper cover and a lower cover is directly connected to the motor shaft through the upper cover. With this structure, when the volute pump is turned on, the motor is activated, and the impeller rotates in conjunction with the motor. The axial force generated is directly borne by the motor, causing the motor bearing temperature to rise, and there are cases of motor bearing damage, resulting in a short motor bearing life and relatively high cost of use.

[0004] Therefore, a vertical volute pump with an independent bearing frame is needed. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the related art, the purpose is to provide a vertical volute pump with an independent bearing frame to solve the technical problems in the related art that when the volute pump is turned on, the motor is activated, the impeller is rotated, and the axial force generated is directly borne by the motor, resulting in an increase in the motor bearing temperature, damage to the motor bearing, short motor bearing life, and relatively high cost of use.

[0006] The technical solution to achieve the purpose is: a vertical volute pump with an independent bearing frame, comprising:

[0007] a pump housing, the pump housing having a first inner cavity, a liquid inlet channel, and a liquid outlet channel, the liquid inlet channel being in communication with the first inner cavity, the liquid outlet channel being in communication with the first inner cavity, and the liquid inlet channel and the liquid outlet channel being spaced apart;

[0008] a pump cover plate connected to the top of the pump housing, wherein a middle position of the pump cover plate has a first stepped through hole, wherein the first stepped through hole is aligned and communicated with the first inner cavity;

[0009] a sealing structure connected between the pump cover and the pump housing, wherein one end of the sealing structure is disposed in the first inner cavity and the other end protrudes out of the first stepped through hole;

[0010] An impeller assembly, one end of which is connected to the other end of the sealing structure and is spaced apart from the pump cover plate;

[0011] a collecting pipe, one end of which is connected to the pump casing and communicated with the liquid outlet channel, a space being defined between a middle portion and the sealing structure, and the other end of which extends into the impeller assembly, the space being communicated with the liquid inlet channel, and the space being communicated with the impeller assembly;

[0012] And a support frame with a bearing is connected to the pump cover plate and the pump casing, surrounds the impeller assembly, and is connected to the other end of the impeller assembly. Under the drive of the motor, the support frame with the bearing is linked to the impeller assembly to rotate.

[0013] Further: the sealing structure includes: a mechanical seal, arranged in the first inner cavity;

[0014] A fixed ring seat is connected to the pump cover plate, a part of which is arranged between the pump housing and the pump cover plate, and the other part is arranged in the first inner cavity, and is used to connect the fixed ring on the mechanical seal;

[0015] And a dynamic ring seat, one end of which is arranged in the first inner cavity, and the other end protrudes from the first stepped through hole, is connected to the impeller assembly and is used to connect the dynamic ring on the mechanical seal, and there is the spacing space between the dynamic ring seat and the collecting pipe.

[0016] Furthermore, the impeller assembly includes: a lower cover body connected to the dynamic ring seat, and having a second stepped through hole in the middle position of the lower cover body, the second stepped through hole communicating with the interval space, and the second stepped through hole penetrating the liquid collecting pipe; and an upper cover body connected to the lower cover body and connected to the support frame with the bearing, and having a second inner cavity between the upper cover body and the lower cover body, the second inner cavity accommodating the other end of the liquid collecting pipe;

[0017] The lower cover body also has a flow channel and a plurality of blades, and the flow channel is connected with the second stepped through hole, the separation space and the second inner cavity;

[0018] The blades are evenly distributed in the flow channel.

[0019] Furthermore: the liquid collecting pipe includes: a first pipe section, one end of which is connected to the pump casing and the other end extends to the second stepped through hole; and a second pipe section, which is connected to the other end of the first pipe section and is arranged in the second inner cavity.

[0020] Furthermore, the diameter of the second pipe section gradually decreases from the connection point with the first pipe section to the direction away from the first pipe section.

[0021] Further: the support frame with bearings includes: a frame body, one end of which is connected to the pump cover plate and the pump casing, surrounds the impeller assembly, and is spaced apart from the impeller assembly;

[0022] a first bearing portion, connected to a middle position of the frame and spaced apart from the impeller assembly;

[0023] a second bearing portion connected to the other end of the first bearing portion and spaced apart from the first bearing portion;

[0024] And a main shaft is connected to the first bearing part and the second bearing part, one end of the main shaft protrudes from the first bearing part and is connected to the impeller assembly, and the other end of the main shaft protrudes from the second bearing part and is connected to the motor.

[0025] Further: the frame includes: a first flange, connecting the pump cover plate and the pump casing; a second flange, spaced apart from the first flange, connected to the second bearing part; a first connecting member, connecting the first flange and the second flange; at least two second connecting members, spaced apart, connecting the first flange, the second flange and the first connecting member; and a first bearing chamber, connected in the first connecting member, and arranged between the first flange and the second flange.

[0026] Further: the first bearing part includes: a first bearing, arranged in the first bearing chamber, connected to the main shaft; a spacer ring, sleeved on the main shaft, arranged in the first bearing chamber, and in contact with the first bearing; a first locking nut, connected to the main shaft, pressing the spacer ring; and a first pressure cover, connected to the first bearing chamber, surrounding the main shaft, spaced apart from the main shaft, and pressing the first bearing.

[0027] Further: the second bearing part includes: a second bearing chamber, connected to the first flange; a second bearing, arranged in the second bearing chamber, connected to the main shaft; a second locking nut, connected to the main shaft, pressing the second bearing; and a second pressure cover, connected to the second bearing chamber, surrounding the main shaft, and spaced apart from the main shaft to press the second bearing.

[0028] Furthermore: the distance dimension A between the first bearing and the second bearing, plus the distance dimension B between the first bearing and one end of the main shaft, is smaller than the height dimension C of the frame.

[0029] The above technical solution has the following beneficial effects: a vertical volute pump with an independent bearing frame is provided with a pump casing, a pump cover plate, a sealing structure, an impeller assembly, a liquid collecting pipe, and a support frame with a bearing, compared with the related art; when in use, a portion of the support frame with the bearing is driven to rotate by a motor, and a portion of the sealing structure is linked to rotate together with the impeller assembly, and the medium enters through the liquid inlet channel on the pump casing, flows along the first inner cavity and the spacing space, and enters the impeller assembly, where it is pressurized by the impeller assembly, the flow rate of the medium is accelerated, the medium enters the liquid collecting pipe, and is discharged along the liquid outlet channel on the pump casing;

[0030] Since a support frame with a bearing is provided, a reliable support structure is formed, so that when the impeller assembly rotates, the stability is relatively good, the vibration is reduced, the medium is transported relatively smoothly, and it can withstand axial force, thus protecting the motor;

[0031] Thus, the technical problems that when the volute pump is turned on, the motor is activated, the impeller is linked to rotate, and the axial force generated is directly borne by the motor, resulting in an increase in the motor bearing temperature, damage to the motor bearing, short life of the motor bearing, and relatively high cost of use are overcome. The technical effect of reducing the axial force borne by the motor, reducing the probability of motor bearing damage, and relatively low cost of use is achieved. The technical effect is practical and is conducive to reducing the operating cost of the vertical volute pump throughout its life cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is the assembly cross-sectional view;

[0033] Figure 2 for Figure 1 A partial cross-sectional view of the support frame with the bearing removed;

[0034] Figure 3 It is a partial cross-sectional view of the impeller assembly and the collecting pipe;

[0035] Figure 4 A partial cross-sectional view of a support frame having a bearing;

[0036] Figure 5 It is a partial cross-sectional view of the frame;

[0037] In the figure: 10. Pump casing, 11. First inner cavity, 12. Liquid inlet channel, 13. Liquid outlet channel, 20. Pump cover, 21. First stepped through hole, 30. Sealing structure, 31. Mechanical seal, 32. Fixed ring seat, 33. Moving ring seat, 40. Impeller assembly, 41. Lower cover, 41-1. Second stepped through hole, 41-2. Flow channel, 41-3. Blades, 42. Upper cover, 43. Second inner cavity, 50. Liquid collecting pipe, 501. Spacing space, 51. First pipe section, 52. Second pipe section, 60. Support frame with bearing, 61. Frame body, 61-1. First flange, 61-2. Second flange, 61-3. First connecting piece, 61-4. Second connecting piece, 61-5. First bearing chamber, 62. First bearing part, 62-1. First bearing, 62-2. Spacer ring, 62-3. First locking nut, 62-4. First pressure cover, 63. Second bearing part, 63-1. Second bearing chamber, 63-2. Second bearing, 63-3. Second locking nut, 63-4. Second pressure cover, 64. Main shaft. DETAILED DESCRIPTION

[0038] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings;

[0039] A vertical volute pump with an independent bearing frame solves the technical problems in related technologies in which, when the volute pump is turned on, the motor operates, the impeller rotates, and the axial force generated is directly borne by the motor, resulting in increased motor bearing temperature, damage to the motor bearings, short motor bearing life, and relatively high cost of use. The invention can be manufactured and used, achieving the positive effects of reducing the axial force borne by the motor, lowering the probability of motor bearing damage, and relatively low cost of use. The overall concept is as follows:

[0040] Implementation Method

[0041] like Figure 1 As shown; a vertical volute pump with an independent bearing frame, comprising:

[0042] A pump housing 10 having a first inner cavity 11, a liquid inlet channel 12, and a liquid outlet channel 13. The liquid inlet channel 12 is in communication with the first inner cavity 11, and the liquid outlet channel 13 is in communication with the first inner cavity 11. The liquid inlet channel 12 and the liquid outlet channel 13 are spaced apart from each other.

[0043] A pump cover plate 20 is connected to the top of the pump housing 10 , and a first stepped through hole 21 is formed in the middle of the pump cover plate 20 , and the first stepped through hole 21 is aligned and communicated with the first inner cavity 11 ;

[0044] a sealing structure 30 connected between the pump cover 20 and the pump housing 10 , with one end of the sealing structure 30 disposed in the first inner cavity 11 and the other end protruding from the first stepped through hole 21 ;

[0045] An impeller assembly 40, one end of which is connected to the other end of the sealing structure 30 and is spaced apart from the pump cover plate 20;

[0046] A liquid collecting pipe 50 has one end connected to the pump housing 10 and in communication with the liquid outlet passage 13, a space 501 is defined between the middle portion and the sealing structure 30, and the other end extends into the impeller assembly 40, the space 501 being in communication with the liquid inlet passage 12, and the space 501 being in communication with the impeller assembly 40;

[0047] and a support frame 60 having a bearing, connected to the pump cover plate 20 and the pump housing 10, surrounding the impeller assembly 40, and connected to the other end of the impeller assembly 40, so as to rotate the impeller assembly 40;

[0048] Specifically, during implementation, a pump housing 10, a pump cover plate 20, a sealing structure 30, an impeller assembly 40, a liquid collecting pipe 50, and a support frame 60 with a bearing are provided. During use, a portion of the support frame 60 with the bearing is driven to rotate by the motor, and a portion of the sealing structure 30 and the impeller assembly 40 are driven to rotate together. The medium enters through the liquid inlet channel 12 on the pump housing 10, flows along the first inner cavity 11 and the separation space 501, and enters the impeller assembly 40. The medium is pressurized by the impeller assembly 40, and the flow rate of the medium is accelerated. The medium enters the liquid collecting pipe 50 and is discharged along the liquid outlet channel 13 on the pump housing 10.

[0049] Since the support frame 60 with the bearing is provided, a reliable support structure is formed, so that when the impeller assembly 40 rotates, the stability is relatively good, the vibration is reduced, the medium is transported relatively smoothly, and the axial force can be withstood, thereby protecting the motor;

[0050] Another embodiment:

[0051] like Figure 1 、 Figure 2 As shown; during implementation, the pump housing 10 is provided with a first inner cavity 11, which is conducive to accommodating the sealing structure 30, so that the sealing structure 30 is in direct contact with the medium. The circulating medium can take away the heat at the sealing structure 30, cool the sealing structure 30, and reduce the probability of mechanical seal damage;

[0052] A liquid inlet channel 12 is provided to facilitate the entry of the medium; a liquid outlet channel 13 is provided to facilitate the discharge of the medium;

[0053] The pump housing 10 is made of a cast blank and then machined to form a reliable support structure that is convenient for connecting other components;

[0054] Another embodiment:

[0055] like Figure 1 、 Figure 2 As shown; when implemented, the pump cover plate 20 is projected from top to bottom, and has an annular shape, which is connected to the pump housing 10 and the support frame 60 having a bearing by bolts, and is easy to install and disassemble;

[0056] The pump cover plate 20 is provided to facilitate connection between the positioning sealing structure 30 and the support frame 60 with bearings, and the structural reliability is relatively good;

[0057] Another embodiment:

[0058] like Figure 1 、 Figure 2 As shown; in implementation, the sealing structure 30 includes: a mechanical seal 31, which is arranged in the first inner cavity 11; a fixed ring seat 32, which is connected to the pump cover plate 20, a portion of which is arranged between the pump housing 10 and the pump cover plate 20, and the other portion is arranged in the first inner cavity 11, and is used to connect the fixed ring on the mechanical seal 31; and a dynamic ring seat 33, one end of which is arranged in the first inner cavity 11, and the other end protrudes from the first stepped through hole 21, is connected to the impeller assembly 40, and is used to connect the dynamic ring on the mechanical seal 31, and the spacing space 501 is defined between the dynamic ring seat 33 and the liquid collecting pipe 50;

[0059] The mechanical seal 31 is a common structure in the prior art, such as a single-end mechanical seal (including a fixed ring and a dynamic ring), which is used to form a seal to prevent the medium from leaking from the first inner cavity 11 along the first stepped through hole 21;

[0060] The fixed ring seat 32 is connected to the pump cover plate 20 by passing bolts, and a sealing gasket is provided between the pump housing 10, which not only ensures the sealing of the connection with the pump housing 10, but also facilitates the positioning of the fixed ring on the mechanical seal 31;

[0061] The fixed ring seat 32 and the fixed ring are in a fixed state. When the dynamic ring seat 33 and the dynamic ring rotate, a sealing surface is formed between the fixed ring and the dynamic ring, thereby ensuring sealing performance.

[0062] The dynamic ring seat 33 is connected to the impeller assembly 40 through a bolt member for connecting the dynamic ring on the mechanical seal 31. The dynamic ring seat 33 and the dynamic ring rotate together with the impeller assembly 40.

[0063] A sealing structure 30 is provided to ensure sealing performance, and the mechanical seal 31 is in direct contact with the medium. The circulating medium can take away the heat from the mechanical seal 31, cool the mechanical seal 31, and reduce the probability of damage to the mechanical seal 31;

[0064] Another embodiment:

[0065] like Figure 1 、 Figure 2 、 Figure 3 As shown; in implementation, the impeller assembly 40 includes: a lower cover body 41, connected to the dynamic ring seat 33, and having a second stepped through hole 41-1 in the middle position of the lower cover body 41, the second stepped through hole 41-1 being connected to the interval space 501, and the second stepped through hole 41-1 passing through the collecting pipe 50; and an upper cover body 42, connected to the lower cover body 41, connected to the support frame 60 with the bearing, and having a second inner cavity 43 between the upper cover body 42 and the lower cover body 41, the second inner cavity 43 accommodating the other end of the collecting pipe 50;

[0066] A sealing gasket is placed between the lower cover 41 and the dynamic ring seat 33 and then bolted in. A sealing gasket is placed between the lower cover 41 and the upper cover 42 and then bolted in. The second inner cavity 43 formed is conducive to accommodating the medium, allowing the medium to smoothly enter the liquid collecting pipe 50, reducing the probability of medium interruption.

[0067] The lower cover 41 further includes a flow channel 41-2 and a plurality of blades 41-3. The flow channel 41-2 communicates with the second stepped through hole 41-1, the spacing space 501, and the second inner cavity 43. The blades 41-3 are evenly distributed within the flow channel 41-2. When the impeller assembly 40 rotates, the blades 41-3 act to create a negative pressure at the second stepped through hole 41-1. The medium flows along the first inner cavity 11 and the spacing space 501, enters the second inner cavity 43 through the flow channel 41-2, enters the liquid collecting pipe 50, and is discharged through the liquid outlet channel 13 on the pump housing 10.

[0068] The separate arrangement of the lower cover 41 and the upper cover 42 provides relatively good flexibility during assembly and facilitates assembly of the liquid collecting pipe 50 , making the operation relatively convenient.

[0069] Another embodiment:

[0070] like Figure 1 、 Figure 2 、 Figure 3 As shown; in implementation, the liquid collecting pipe 50 includes: a first pipe section 51, one end of which is connected to the pump housing 10 and the other end of which extends to the second stepped through hole 41-1; and a second pipe section 52, which is connected to the other end of the first pipe section 51 and is disposed in the second inner cavity 43;

[0071] After the first pipe section 51 and the second pipe section 52 are welded together, the outer shape is roughly an "L"-shaped structure. When the impeller assembly 40 rotates, the collecting pipe 50 is in a fixed state;

[0072] One end of the first pipe section 51 is plugged into the pump housing 10, or connected with bolts, which is convenient for installation and disassembly;

[0073] The other end of the first tube section 51 extends to the second stepped through hole 41-1. The gap D between the other end and the second stepped through hole 41-1 is 0.1-0.2 mm. Controlling the size of the gap D reduces the amount of medium flowing back from the second inner cavity 43 to the second stepped through hole 41-1, thereby facilitating smooth flow of the medium.

[0074] The diameter of the second pipe section 52 gradually decreases from the connection with the first pipe section 51 toward the direction away from the first pipe section 51. The medium enters through the small diameter, which reduces the probability of the medium flowing back into the second inner cavity 43 and increases the flow rate of the medium, converting the medium's velocity energy into pressure energy. The medium flows along the liquid collecting pipe 50 and is discharged from the liquid outlet channel 13, resulting in smoother flow.

[0075] Another embodiment:

[0076] like Figure 1 、 Figure 4 、 Figure 5 As shown; during implementation, the support frame 60 with a bearing includes: a frame body 61, one end of which is connected to the pump cover plate 20 and the pump casing 10, surrounds the impeller assembly 40, and is spaced apart from the impeller assembly 40; a first bearing portion 62, connected to the middle position of the frame body 61, and is spaced apart from the impeller assembly 40; a second bearing portion 63, connected to the other end of the first bearing portion 62, and is spaced apart from the first bearing portion 62; and a main shaft 64, connected to the first bearing portion 62 and the second bearing portion 63, one end of the main shaft 64 protrudes from the first bearing portion 62, and is connected to the impeller assembly 40, and the other end of the main shaft 64 protrudes from the second bearing portion 63, and is connected to the motor;

[0077] The frame 61 includes: a first flange 61-1 connecting the pump cover plate 20 and the pump housing 10; a second flange 61-2 spaced apart from the first flange 61-1 and connected to the second bearing portion 63; a first connecting member 61-3 connecting the first flange 61-1 and the second flange 61-2; at least two second connecting members 61-4 spaced apart and connecting the first flange 61-1, the second flange 61-2, and the first connecting member 61-3; and a first bearing chamber 61-5 connected to the first connecting member 61-3 and disposed between the first flange 61-1 and the second flange 61-2.

[0078] The first connecting member 61-3 is a cylindrical structure; the second connecting member 61-4 is a plate-shaped structure, which has the function of improving structural strength; the middle position of the first bearing chamber 61-5 has a through hole, and the first bearing 62-1 and the spacer ring 62-2 are arranged in the through hole;

[0079] The first flange 61-1, the second flange 61-2, the first connecting piece 61-3, the second connecting piece 61-4 and the first bearing chamber 61-5 are welded together, or integrally cast into a blank and then machined;

[0080] Through the first flange 61-1, the pump cover plate 20 and the pump housing 10 are connected by bolts, which makes installation and disassembly more convenient;

[0081] The first bearing portion 62 includes: a first bearing 62-1, disposed in the first bearing chamber 61-5 and connected to the main shaft 64; a spacer ring 62-2, sleeved on the main shaft 64, disposed in the first bearing chamber 61-5, and in contact with the first bearing 62-1; a first locking nut 62-3, connected to the main shaft 64, pressing the spacer ring 62-2; and a first pressure cover 62-4, connected to the first bearing chamber 61-5, surrounding the main shaft 64, spaced from the main shaft 64, and pressing the first bearing 62-1.

[0082] The first bearing 62-1 is a common structure in the prior art, such as a cylindrical roller bearing, a deep groove ball bearing, etc., connected to the through hole on the first bearing chamber 61-5, and used to connect and support the main shaft 64;

[0083] The spacer ring 62-2 is a ring-shaped structure used to limit the first bearing 62-1;

[0084] The first locking nut 62-3 is a common structure in the prior art, and is threadedly connected to the main shaft 64, pressing the spacer ring 62-2 to limit the inner ring of the first bearing 62-1;

[0085] Bolts are inserted between the first gland 62-4 and the first bearing chamber 61-5 to limit the outer ring of the first bearing 62-1;

[0086] A first bearing portion 62 is provided, which can not only support the main shaft 64 but also withstand axial forces;

[0087] The second bearing portion 63 includes: a second bearing chamber 63-1 connected to the first flange 61-1; a second bearing 63-2 disposed in the second bearing chamber 63-1 and connected to the main shaft 64; a second locking nut 63-3 connected to the main shaft 64 to press the second bearing 63-2; and a second pressure cover 63-4 connected to the second bearing chamber 63-1, surrounding the main shaft 64, spaced apart from the main shaft 64, and pressing the second bearing 63-2.

[0088] The second bearing chamber 63-1 is T-shaped and is connected to the first flange 61-1 by bolts. A third stepped through hole is formed in the middle of the second bearing chamber 63-1 to accommodate the second bearing 63-2.

[0089] The second bearing 63-2 is a commonly used structure in the prior art, such as two single-row angular contact ball bearings mounted back-to-back, connected to the third stepped through hole on the second bearing chamber 63-1, and used to connect to the support main shaft 64, which is conducive to bearing axial forces (axial forces include: gravity generated by the rotation of the impeller assembly 40, and the force and torque generated by the flow of the medium);

[0090] The second locking nut 63-3 is a common structure in the prior art, and is threadedly connected to the main shaft 64 to limit the inner ring of the second bearing 63-2;

[0091] Bolts are inserted between the second gland 63-4 and the second bearing chamber 63-1 to limit the outer ring of the second bearing 63-2;

[0092] A second bearing portion 63 is provided, which can not only support the main shaft 64 but also withstand axial forces;

[0093] The distance A between the first bearing 62-1 and the second bearing 63-2, plus the distance B between the first bearing 62-1 and one end of the main shaft 64, is smaller than the height C of the frame 61. This control of the dimensions forms a reliable support structure on the frame 61, and when the main shaft 64 rotates in conjunction with the impeller assembly 40, the stability is relatively good. The first bearing 62 and the second bearing 63 can withstand axial forces, thereby protecting the motor.

[0094] The main shaft 64 is a stepped shaft, one end of which is connected to the upper cover 42 by a bolt, and the other end is connected to the transmission shaft on the motor by a coupling. When the motor is actuated, the main shaft 64 rotates, thereby rotating the impeller assembly 40, thereby pressurizing and conveying the medium.

[0095] The support frame 60 with bearings is provided to improve the reliability of the structure, so that when the main shaft 64 is linked with the impeller assembly 40 to rotate, the stability is relatively good, and the axial force can be withstood, thereby protecting the motor;

[0096] The working principle is as follows: When in use, the main shaft 64 on the support frame 60 with a bearing is driven by the motor to rotate, which in turn rotates the movable ring seat 33, the movable ring, and the impeller assembly 40. The medium enters through the liquid inlet channel 12 on the pump housing 10, flows through the first inner cavity 11 and the separation space 501, and enters the impeller assembly 40. The medium is pressurized by the impeller assembly 40, and the flow rate of the medium is accelerated. The medium enters the liquid collecting pipe 50 and is discharged through the liquid outlet channel 13 on the pump housing 10.

[0097] Since the support frame 60 with the bearing is provided, a reliable support structure is formed, so that when the impeller assembly 40 rotates, the stability is relatively good, the vibration is reduced, the medium is transported relatively smoothly, and the axial force can be withstood, thereby protecting the motor;

[0098] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the positional relationships shown in the drawings and are only used to facilitate or simplify the description, and do not necessarily indicate specific directions. The operating procedures described in the embodiments are not absolute steps for use and may be adjusted accordingly in actual use.

[0099] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the relevant art. The terms "first," "second," and similar words used in the specification and claims do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not necessarily indicate a limit on quantity, but rather indicate the presence of at least one, which shall be determined based on the content of the embodiments.

[0100] The above is only a preferred specific implementation method, but the scope of protection is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solutions and inventive concepts within the disclosed technical scope, which should be covered by the scope of protection.

Claims

1. A vertical volute pump with an independent bearing frame, characterized in that: include: A pump housing (10), the pump housing (10) having a first inner cavity (11), a liquid inlet channel (12), and a liquid outlet channel (13), the liquid inlet channel (12) being in communication with the first inner cavity (11), the liquid outlet channel (13) being in communication with the first inner cavity (11), and the liquid inlet channel (12) and the liquid outlet channel (13) being spaced apart; A pump cover plate (20) is connected to the top of the pump housing (10), and a first stepped through hole (21) is provided in the middle of the pump cover plate (20), wherein the first stepped through hole (21) is aligned and communicated with the first inner cavity (11); a sealing structure (30) connected between the pump cover (20) and the pump housing (10), one end of the sealing structure (30) being disposed in the first inner cavity (11) and the other end protruding from the first stepped through hole (21); An impeller assembly (40), one end of which is connected to the other end of the sealing structure (30) and is spaced apart from the pump cover plate (20); A liquid collecting pipe (50), one end of which is connected to the pump housing (10) and communicated with the liquid outlet channel (13), a space (501) is defined between the middle portion and the sealing structure (30), and the other end of which extends into the impeller assembly (40), the space (501) being communicated with the liquid inlet channel (12), and the space (501) being communicated with the impeller assembly (40); and a support frame (60) with a bearing, connected to the pump cover plate (20) and the pump housing (10), surrounding the impeller assembly (40), and connected to the other end of the impeller assembly (40); under the drive of the motor, the support frame (60) with the bearing rotates in conjunction with the impeller assembly (40).

2. A vertical volute pump with an independent bearing frame according to claim 1, characterized in that: The sealing structure (30) comprises: a mechanical seal (31) disposed in the first inner cavity (11); a fixed ring seat (32) connected to the pump cover plate (20), with a portion disposed between the pump housing (10) and the pump cover plate (20), and another portion disposed in the first inner cavity (11), for connecting to the fixed ring on the mechanical seal (31); and a dynamic ring seat (33), one end of which is disposed in the first inner cavity (11) and the other end of which protrudes from the first stepped through hole (21), connected to the impeller assembly (40) and used for connecting the dynamic ring on the mechanical seal (31), with the spacing space (501) being provided between the dynamic ring seat (33) and the liquid collecting pipe (50).

3. A vertical volute pump with an independent bearing frame according to claim 2, characterized in that: The impeller assembly (40) comprises: a lower cover (41), connected to the dynamic ring seat (33), and having a second stepped through hole (41-1) at a middle position of the lower cover (41), the second stepped through hole (41-1) being in communication with the interval space (501), and the second stepped through hole (41-1) penetrating the collecting pipe (50); and an upper cover (42), connected to the lower cover (41), connected to the support frame (60) with the bearing, and having a second inner cavity (43) between the upper cover (42) and the lower cover (41), the second inner cavity (43) accommodating the other end of the collecting pipe (50); The lower cover (41) further comprises a flow channel (41-2) and a plurality of blades (41-3), wherein the flow channel (41-2) is in communication with the second stepped through hole (41-1), the spacing space (501) and the second inner cavity (43); The blades (41-3) are evenly distributed in the flow channel (41-2).

4. A vertical volute pump with an independent bearing frame according to claim 3, characterized in that: The collecting pipe (50) comprises: a first pipe section (51), one end of which is connected to the pump housing (10) and the other end of which extends to the second stepped through hole (41-1); and a second pipe section (52), which is connected to the other end of the first pipe section (51) and is arranged in the second inner cavity (43).

5. A vertical volute pump with an independent bearing frame according to claim 4, characterized in that: The diameter of the second pipe section (52) gradually decreases from the connection point with the first pipe section (51) toward a direction away from the first pipe section (51).

6. A vertical volute pump with an independent bearing frame according to claim 3 or 5, characterized in that: The support frame (60) with a bearing comprises: a frame body (61), one end of which is connected to the pump cover plate (20) and the pump casing (10), surrounds the impeller assembly (40), and is spaced apart from the impeller assembly (40); A first bearing portion (62) is connected to a middle position of the frame (61) and is spaced apart from the impeller assembly (40); a second bearing portion (63) connected to the other end of the first bearing portion (62) and spaced apart from the first bearing portion (62); and a main shaft (64) connected to the first bearing portion (62) and the second bearing portion (63), one end of the main shaft (64) protruding from the first bearing portion (62) and connected to the impeller assembly (40), and the other end of the main shaft (64) protruding from the second bearing portion (63) and connected to the motor.

7. A vertical volute pump with an independent bearing frame according to claim 6, characterized in that: The frame (61) includes: a first flange (61-1) connecting the pump cover plate (20) and the pump housing (10); a second flange (61-2) spaced apart from the first flange (61-1) and connected to the second bearing portion (63); a first connecting member (61-3) connecting the first flange (61-1) and the second flange (61-2); at least two second connecting members (61-4) spaced apart and connecting the first flange (61-1), the second flange (61-2) and the first connecting member (61-3); and a first bearing chamber (61-5) connected in the first connecting member (61-3) and arranged between the first flange (61-1) and the second flange (61-2).

8. A vertical volute pump with an independent bearing frame according to claim 7, characterized in that: The first bearing portion (62) includes: a first bearing (62-1), which is arranged in the first bearing chamber (61-5) and connected to the main shaft (64); a spacer ring (62-2), which is sleeved on the main shaft (64), arranged in the first bearing chamber (61-5), and contacts the first bearing (62-1); a first locking nut (62-3), which is connected to the main shaft (64) and presses the spacer ring (62-2); and a first pressure cover (62-4), which is connected to the first bearing chamber (61-5), surrounds the main shaft (64), is spaced apart from the main shaft (64), and presses the first bearing (62-1).

9. A vertical volute pump with an independent bearing frame according to claim 8, characterized in that: The second bearing portion (63) includes: a second bearing chamber (63-1) connected to the first flange (61-1); a second bearing (63-2) disposed in the second bearing chamber (63-1) and connected to the main shaft (64); a second locking nut (63-3) connected to the main shaft (64) and pressing the second bearing (63-2); and a second pressure cover (63-4) connected to the second bearing chamber (63-1), surrounding the main shaft (64), being spaced apart from the main shaft (64), and pressing the second bearing (63-2).

10. A vertical volute pump with an independent bearing frame according to claim 9, characterized in that: The distance dimension A between the first bearing (62-1) and the second bearing (63-2) plus the distance dimension B between the first bearing (62-1) and one end of the main shaft (64) is smaller than the height dimension C of the frame (61).

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