Vertical upper and lower shell combined core-pulling pump

Abstract

The utility model discloses a vertical upper and lower shell combined core-pulling pump, which comprises a motor, one end of the supporting piece is connected to the motor, a transmission shaft on the motor penetrates out of the middle position of the supporting piece, the other end of the supporting piece is further provided with a first space, and the first space surrounds the transmission shaft; one end of the upper shell is connected with the supporting piece, a second space is formed in the middle of the upper shell, the second space is aligned and communicated with the first space, a first flow channel is further formed in the other end of the upper shell, and the first flow channel is communicated with the second space; the lower shell is connected to the other end of the upper shell, a liquid inlet and a second flow channel are formed in the lower shell, the liquid inlet is communicated with the second flow channel, and the second flow channel is communicated with the first flow channel in an aligned mode; one end of the core-pulling sealing piece is connected with the transmission shaft, and sealing is formed in the first space and the second space; the impeller is connected to the other end of the core-pulling sealing element; therefore, the technical problems that assembly and disassembly are inconvenient, and the use cost is relatively high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, in particular to a vertical core-pulling pump with upper and lower shell combinations. Background Art

[0002] A pump is a machine that transports fluid or pressurizes fluid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid.

[0003] The pump is mainly used to transport liquid media such as water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals. It can also transport liquid-gas mixtures and liquids containing suspended solids.

[0004] Traditional pumps generally include: motor, bearing box, pump cover, mechanical seal, pump casing and impeller and other structures. In actual use, there are still some shortcomings:

[0005] 1. In order to ensure the sealing of the pump, a mechanical seal is used. Not only is the structure relatively complex, but it is also inconvenient to assemble and disassemble. The mechanical seal is prone to damage and the replacement cost is relatively high.

[0006] 2. The pump casing is an integral structure with poor assembly and disassembly flexibility. Moreover, when the pump casing is partially worn, the entire pump casing needs to be replaced, and the cost of use is relatively high. Utility Model Content

[0007] In view of the above-mentioned deficiencies existing in the related art, the purpose is to provide a vertical upper and lower shell combined core-pulling pump to solve the technical problems of inconvenient assembly and disassembly and relatively high use cost in the related art.

[0008] The technical solution to achieve the purpose is: a vertical upper and lower shell combined core pump, including: a motor; and also including:

[0009] A support member, one end of which is connected to the motor, a transmission shaft on the motor passes through the middle of the support member, and the other end of the support member further comprises a first space, the first space surrounding the transmission shaft;

[0010] An upper shell, one end of which is connected to the support member and the other end of which extends away from the support member, wherein a second space is defined in the middle of the upper shell, the second space is aligned and communicated with the first space, and a first flow channel is defined on the other end of the upper shell, the first flow channel being communicated with the second space;

[0011] A lower shell is connected to the other end of the upper shell, and has a liquid inlet and a second flow channel on the lower shell, the liquid inlet is connected to the second flow channel, and the second flow channel is aligned and connected to the first flow channel;

[0012] a core-pulling seal, one end of which is connected to the transmission shaft, and the other end of which is arranged at the first flow channel and the second flow channel to form a seal at the first space and the second space;

[0013] and an impeller connected to the other end of the core-pulling seal and spaced apart from the first flow channel, the liquid inlet and the second flow channel.

[0014] Furthermore: the side wall of the upper shell also has at least one first liquid discharge port, and the first liquid discharge port is connected to the second space.

[0015] Furthermore: the second space is a stepped through hole.

[0016] Furthermore: the core-pulling seal includes: a main shaft, one end of which is connected to the transmission shaft, and the other end is arranged at the first flow channel and the second flow channel, and connected to the impeller;

[0017] a bearing connected to the main shaft;

[0018] A core-pulling body is provided in the first space and the second space, the middle position of which is penetrated by the main shaft and connected to the bearing. When the main shaft rotates, the core-pulling body does not rotate, and the core-pulling body is spaced apart from the impeller.

[0019] and a sealing gasket connected between the bearing and the core-pulling body and surrounding the main shaft.

[0020] Furthermore: the outer wall of the core-pulling body is a stepped structure, matching the shapes of the first space and the second space, with a first stepped through hole in the middle, the first stepped through hole is penetrated by the main shaft, and the bearing and the sealing gasket are provided.

[0021] Furthermore: the core-pulling body is further provided with a groove space and at least one second liquid discharge port;

[0022] The groove space is in communication with the second liquid drain port;

[0023] The groove space is in communication with the first liquid discharge port;

[0024] The second liquid drain port is communicated with the first stepped through hole.

[0025] Furthermore: the groove space has a slope;

[0026] The slope faces the first drain port.

[0027] Furthermore: a labyrinth sealing groove is also provided on the core-pulling body;

[0028] The labyrinth sealing groove is provided at the first stepped through hole, surrounding the main shaft, and the labyrinth sealing groove is provided between the second drain port and the sealing gasket.

[0029] Furthermore: the outer diameter of the impeller is smaller than the minimum inner diameter A of the second space.

[0030] The above technical solution has the following beneficial effects: a vertical upper and lower shell combined core-pulling pump, compared with the related art, is provided with a motor, a support member, an upper shell, a lower shell, a core-pulling seal and an impeller; the motor is used to generate a rotational driving force and connect the core-pulling seal and the support member; the support member forms a reliable support structure, which is conducive to connecting the upper shell and the core-pulling seal;

[0031] Since the upper shell and the lower shell are separated, the assembly and disassembly are relatively convenient, and after removing the lower shell, it is also convenient to install and remove the impeller, and the operation flexibility is relatively good;

[0032] The use of core-pulling seals not only ensures sealing and is not easy to damage, but also, because the core-pulling seals are connected to the drive shaft of the motor, they can be assembled and disassembled together with the motor and support parts, making assembly and disassembly relatively convenient and reducing the cost of use;

[0033] Thus, the technical problems of inconvenient assembly and disassembly and relatively high use cost are overcome, and the technical effects of relatively convenient assembly and disassembly and reduced use cost are achieved, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is the assembly cross-sectional view;

[0035] Figure 2 It is a partial cross-sectional view of the upper shell and the lower shell;

[0036] Figure 3 It is a partial cross-sectional view of the core-pulling body;

[0037] In the figure: 10. Motor, 11. Drive shaft, 20. Support, 21. First space, 30. Upper shell, 31. Second space, 32. First flow channel, 33. First liquid discharge port, 40. Lower shell, 41. Liquid inlet, 42. Second flow channel, 50. Core-pulling seal, 51. Main shaft, 52. Bearing, 53. Core-pulling body, 53-1. First stepped through hole, 53-2. Groove space, 53-21. Slope, 53-3. Second liquid discharge port, 53-4. Labyrinth sealing groove, 54. Sealing gasket, 60. Impeller. 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 upper and lower shell combined core-pulling pump solves the technical problems of inconvenient assembly and disassembly and relatively high use costs in related technologies. It can be manufactured and used, and achieves the positive effects of relatively convenient assembly and disassembly and reduced use costs. The overall idea is as follows:

[0040] Implementation Method

[0041] like Figure 1 、 Figure 2 As shown; a vertical upper and lower shell combined core pump, including: a motor 10; also includes:

[0042] A support member 20 is connected to the motor 10 at one end. The transmission shaft 11 on the motor 10 passes through the middle of the support member 20 . The other end of the support member 20 also defines a first space 21 , which surrounds the transmission shaft 11 .

[0043] An upper shell 30 is connected to the support member 20 at one end and extends away from the support member 20 at the other end. A second space 31 is defined in the middle of the upper shell 30. The second space 31 is aligned and communicates with the first space 21. A first flow channel 32 is defined at the other end of the upper shell 30. The first flow channel 32 communicates with the second space 31.

[0044] A lower housing 40 is connected to the other end of the upper housing 30 . The lower housing 40 has a liquid inlet 41 and a second flow channel 42 . The liquid inlet 41 is connected to the second flow channel 42 . The second flow channel 42 is aligned and connected to the first flow channel 32 .

[0045] A core-pulling seal 50 , one end of which is connected to the transmission shaft 11 , and the other end of which is disposed at the first flow channel 32 and the second flow channel 42 , forming a seal at the first space 21 and the second space 31 ;

[0046] and an impeller 60 connected to the other end of the core-pulling seal 50 and spaced apart between the first flow channel 32 , the liquid inlet 41 and the second flow channel 42 ;

[0047] Specifically, during implementation, a motor 10, a support member 20, an upper housing 30, a lower housing 40, a core-pulling seal 50, and an impeller 60 are provided; the motor 10 is used to generate a rotational driving force and connect the core-pulling seal 50 and the support member 20; the support member 20 forms a reliable support structure, which is conducive to connecting the upper housing 30 and the core-pulling seal 50;

[0048] Since the upper shell 30 and the lower shell 40 are separated, assembly and disassembly are relatively convenient, and after removing the lower shell 40, it is also convenient to install and remove the impeller 60, and the operation flexibility is relatively good;

[0049] The use of the core-pulling seal 50 not only ensures the sealing performance and is not easy to be damaged, but also, because the core-pulling seal 50 is connected to the transmission shaft 11 of the motor 10, it can be assembled and disassembled together with the motor 10 and the support member 20, which is relatively convenient to assemble and disassemble, thereby reducing the use cost;

[0050] For example, when disassembling, the bolts between the support member 20 and the upper housing 30 are loosened, and the motor 10, the support member 20 and the core-pulling seal 50 are pulled out from the second space 31. Assembly and disassembly are relatively convenient.

[0051] Another embodiment:

[0052] like Figure 1 As shown; in implementation, the motor 10 is a common structure in the prior art, such as a vertical motor, for generating a rotational driving force, and the transmission shaft 11 is connected to the main shaft 51 via a coupling (the coupling is a common structure in the prior art, such as a threaded coupling, etc.). After reading the disclosed content, a person of ordinary skill in the art can directly and unambiguously know how to configure the motor 10 without having to make any creative efforts or conduct excessive experiments;

[0053] Another embodiment:

[0054] like Figure 1 As shown; when implemented, the support member 20 has a circular shape and is connected to the motor 10 by a bolt member, and the middle position is penetrated by the drive shaft 11 on the motor 10;

[0055] A first space 21 is provided to facilitate positioning of the core-pulling seal 50;

[0056] The support member 20 forms a reliable support structure, which is conducive to connecting the upper shell 30 and the core-pulling seal 50;

[0057] Another embodiment:

[0058] like Figure 1 、 Figure 2 As shown; when implemented, the outer shape of the upper shell 30 is a stepped structure, one end of which is connected to the support member 20 by a bolt member, and assembly and disassembly are relatively convenient;

[0059] The second space 31 is a stepped through hole for accommodating and positioning the core-pulling seal 50, which is conducive to forming a seal with the core-pulling seal 50, improving the sealing performance, and making assembly and disassembly relatively convenient;

[0060] The side wall of the upper housing 30 further has at least one first drain port 33, which is in communication with the second space 31. The first drain port 33 is provided as a round through hole, which is conducive to the discharge of the liquid medium in the second space 31.

[0061] The lower housing 40 is circular in shape and is connected to the other end of the upper housing 30 by bolts, making assembly and disassembly relatively easy.

[0062] The first flow channel 32 and the second flow channel 42 form a complete flow channel (for example, a pear-shaped flow channel in the prior art). When the impeller 60 rotates, the medium enters from the liquid inlet 41 (for example, Figure 1 ), along the first flow channel 32 and the second flow channel 42 (as shown in the arrow in the figure). Figure 1 The arrow in the middle realizes the transportation of liquid medium;

[0063] Since the upper shell 30 and the lower shell 40 are separated, assembly and disassembly are relatively convenient, and after removing the lower shell 40, it is also convenient to install and remove the impeller 60, and the operation flexibility is relatively good;

[0064] Another embodiment:

[0065] like Figure 1 、 Figure 2 、 Figure 3 As shown; during implementation, the core-pulling seal 50 includes: a main shaft 51, one end of which is connected to the transmission shaft 11, and the other end is arranged at the first flow channel 32 and the second flow channel 42, and is connected to the impeller 60; a bearing 52, which is connected to the main shaft 51; a core-pulling body 53, which is arranged in the first space 21 and the second space 31, and the middle position is penetrated by the main shaft 51 and is connected to the bearing 52. When the main shaft 51 rotates, the core-pulling body 53 does not rotate, and the core-pulling body 53 is spaced apart from the impeller 60; and a sealing gasket 54, which is connected between the bearing 52 and the core-pulling body 53 and surrounds the main shaft 51;

[0066] The main shaft 51 is a stepped shaft, one end of which is connected to the transmission shaft 11 through a coupling, and the other end is connected to the impeller 60; when the motor 10 is turned on, the main shaft 51 and the impeller 60 rotate together;

[0067] The bearing 52 is a common structure in the prior art, such as a deep groove ball bearing, which is used to connect the main shaft 51 and the core-pulling body 53. When the main shaft 51 rotates, it is relatively smooth and does not cause the core-pulling body 53 to rotate.

[0068] The outer wall of the core-pulling body 53 is a stepped structure, which matches the shape of the first space 21 and the second space 31, which is conducive to ensuring sealing and is relatively convenient for assembly and positioning;

[0069] The core-pulling body 53 has a first stepped through hole 53-1 in the middle thereof. The main shaft 51 penetrates the first stepped through hole 53-1, and the bearing 52 and the sealing gasket 54 are disposed in the first stepped through hole 53-1. The structural reliability is relatively good.

[0070] The core-pulling body 53 is further provided with a groove space 53-2 and at least one second drainage port 53-3; the groove space 53-2 is in communication with the second drainage port 53-3; the groove space 53-2 is in communication with the first drainage port 33; the second drainage port 53-3 is in communication with the first stepped through hole 53-1; when medium enters the first stepped through hole 53-1, the medium can enter the groove space 53-2 through the second drainage port 53-3 and then be discharged through the first drainage port 33, thereby preventing the medium from leaking along the gap between the main shaft 51 and the first stepped through hole 53-1 to the connection between the motor 10, the support member 20, the core-pulling body 53 and the upper housing 30 (because the motor 10, the support member 20, the core-pulling body 53 and the upper housing 30 are assembled structures and it is impossible for there to be no tolerance gap, which is common knowledge);

[0071] The groove space 53-2 has a slope 53-21; the slope 53-21 faces the first drain port 33; the slope 53-21 is provided to facilitate the medium to flow toward the first drain port 33 and be discharged from the first drain port 33;

[0072] The second liquid discharge port 53 - 3 is a circular through hole, which is inclined (for example, the angle of inclination to the horizontal plane is 10°), which is conducive to the flow of the medium into the groove space 53 - 2 ;

[0073] The core-pulling body 53 is further provided with a labyrinth sealing groove 53-4; the labyrinth sealing groove 53-4 is provided at the first stepped through hole 53-1, surrounds the main shaft 51, and is provided between the second drain port 53-3 and the sealing gasket 54; the labyrinth sealing groove 53-4 is a rectangular thread, forming a barrier to prevent the medium from leaking along the gap between the main shaft 51 and the first stepped through hole 53-1 to the connection between the motor 10, the support member 20, the core-pulling body 53 and the upper housing 30, thereby improving the sealing performance;

[0074] The sealing gasket 54 is a common structure in the prior art, such as an oil seal or a graphite sealing gasket, which improves the sealing performance and does not affect the normal rotation of the bearing 52;

[0075] A core-pulling seal 50 is provided to ensure sealing performance and prevent the medium from entering through the first flow channel 32 and the second flow channel 42 and leaking along the gap between the main shaft 51 and the first stepped through hole 53-1 to the connection between the motor 10, the support member 20, the core-pulling body 53 and the upper shell 30. The structural reliability is relatively good and not easy to be damaged. Moreover, since the core-pulling seal 50 is connected to the transmission shaft 11 of the motor 10, it can be assembled and disassembled together with the motor 10 and the support member 20, and the assembly and disassembly are relatively convenient, thereby reducing the use cost.

[0076] Another embodiment:

[0077] like Figure 1 、 Figure 2 As shown; in implementation, the impeller 60 is a common structure in the prior art, such as a closed impeller, an open impeller, etc., and is connected to the main shaft 51 by a threaded connection or plugged tightly with the main shaft 51; after reading the disclosed content, a person of ordinary skill in the art can directly and unambiguously know how to configure the impeller 60 without having to make any creative efforts or conduct excessive experiments;

[0078] The outer diameter of the impeller 60 is smaller than the minimum inner diameter A of the second space 31. Due to the control of the size, when the core-pulling seal 50 is disassembled together with the motor 10 and the support member 20, it can be pulled out from the second space 31 together with the impeller 60, making disassembly relatively convenient.

[0079] 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.

[0080] 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.

[0081] 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 core-pulling pump with upper and lower shells, comprising: The motor (10) is characterized in that it further comprises: A support member (20) is connected to the motor (10) at one end, a transmission shaft (11) on the motor (10) passes through a middle position of the support member (20), and a first space (21) is provided at the other end of the support member (20), the first space (21) surrounding the transmission shaft (11); An upper shell (30) is connected to the support member (20) at one end and extends in a direction away from the support member (20) at the other end. A second space (31) is provided in the middle of the upper shell (30), and the second space (31) is aligned and communicated with the first space (21). A first flow channel (32) is further provided at the other end of the upper shell (30), and the first flow channel (32) is communicated with the second space (31). a lower shell (40) connected to the other end of the upper shell (30), the lower shell (40) having a liquid inlet (41) and a second flow channel (42), the liquid inlet (41) communicating with the second flow channel (42), and the second flow channel (42) being aligned and communicating with the first flow channel (32); a core-pulling seal (50), one end of which is connected to the transmission shaft (11), and the other end of which is arranged at the first flow channel (32) and the second flow channel (42), forming a seal at the first space (21) and the second space (31); and an impeller (60) connected to the other end of the core-pulling seal (50) and spaced apart between the first flow channel (32), the liquid inlet (41) and the second flow channel (42).

2. A vertical upper and lower shell combined core-pulling pump according to claim 1, characterized in that: The side wall of the upper shell (30) is further provided with at least one first liquid drain port (33), and the first liquid drain port (33) is communicated with the second space (31).

3. A vertical core-pulling pump with upper and lower shells according to claim 2, characterized in that: The second space (31) is a stepped through hole.

4. A vertical core-pulling pump with upper and lower shells according to claim 3, characterized in that: The core-pulling seal (50) comprises: a main shaft (51), one end of which is connected to the transmission shaft (11), and the other end of which is arranged at the first flow channel (32) and the second flow channel (42) and connected to the impeller (60); A bearing (52) connected to the main shaft (51); A core-pulling body (53) is arranged in the first space (21) and the second space (31), with the main shaft (51) passing through the middle position and connected to the bearing (52); when the main shaft (51) rotates, the core-pulling body (53) does not rotate, and the core-pulling body (53) is spaced apart from the impeller (60); and a sealing gasket (54) connected between the bearing (52) and the core-pulling body (53) and surrounding the main shaft (51).

5. A vertical core-pulling pump with upper and lower shells according to claim 4, characterized in that: The outer wall of the core-pulling body (53) is a stepped structure, matching the shapes of the first space (21) and the second space (31), and having a first stepped through hole (53-1) in the middle. The first stepped through hole (53-1) is penetrated by the main shaft (51), and the bearing (52) and the sealing gasket (54) are provided.

6. A vertical core-pulling pump with upper and lower shells according to claim 5, characterized in that: The core-pulling body (53) is further provided with a groove space (53-2) and at least one second liquid discharge port (53-3); The groove space (53-2) is in communication with the second liquid discharge port (53-3); The groove space (53-2) is in communication with the first liquid discharge port (33); The second liquid discharge port (53-3) is in communication with the first stepped through hole (53-1).

7. A vertical core-pulling pump with upper and lower shells according to claim 6, characterized in that: The groove space (53-2) is provided with a slope (53-21); The slope (53-21) faces the first liquid discharge port (33).

8. The vertical upper and lower shell combined core-pulling pump according to claim 7, characterized in that: The core-pulling body (53) is further provided with a labyrinth sealing groove (53-4); The labyrinth sealing groove (53-4) is arranged at the first stepped through hole (53-1) and surrounds the main shaft (51), and the labyrinth sealing groove (53-4) is arranged between the second drain port (53-3) and the sealing gasket (54).

9. A vertical core-pulling pump with upper and lower shells according to claim 3 or 8, characterized in that: The outer diameter of the impeller (60) is smaller than the minimum inner diameter A of the second space (31).

Images