Multi-stage centrifugal pump with impurity collection function

Abstract

The utility model discloses a multi-stage centrifugal pump with an impurity collection function, and relates to the technical field of centrifugal pumps. The multi-stage centrifugal pump comprises a multi-stage centrifugal pump body, a filtering shell is arranged at the water inlet end of the multi-stage centrifugal pump body, a filtering assembly is arranged in the filtering shell, a shielding assembly is arranged at the top of the filtering assembly, a connecting assembly is arranged at the joint of the filtering shell and the shielding assembly, and an elastic fixing assembly is arranged on one side of the connecting assembly. The elastic fixing assembly is pulled, so that the elastic fixing assembly does not fix the connecting assembly any more, then the filtering assembly is extracted from the interior of the filtering shell through the shielding assembly, collected impurities can be cleaned, and only the elastic fixing assembly needs to be pulled in the whole operation process; the operation is convenient; the joint of the arc-shaped plate and the T-shaped groove can be sealed, so that the joint of the arc-shaped plate and the T-shaped groove is not prone to leakage.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifugal pumps, and in particular relates to a multi-stage centrifugal pump with impurity collection function. Background Art

[0002] The working principle of a centrifugal pump is to transport liquid by relying on the centrifugal force generated by the rotation of the impeller. The main feature of a multistage centrifugal pump is that it has multiple impellers that are strung together by an axis, similar to the style of a candied haws. A multistage pump can achieve higher head and pressure through the combination of multiple impellers.

[0003] In industrial applications, multistage centrifugal pumps often need to handle liquids containing impurities or particles. In order to protect the impeller and system of the multistage centrifugal pump from damage by impurities, a filter is usually set at the water inlet to filter the impurities. Since the filter is set inside the water inlet, the external pipe needs to be removed from the water inlet to clean the impurities filtered by the filter, and the whole cleaning process is more troublesome.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related art, the utility model proposes a multi-stage centrifugal pump with impurity collection function to overcome the above technical problems existing in the existing related art.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a multi-stage centrifugal pump with impurity collection function, comprising a multi-stage centrifugal pump body, a filter housing is arranged at the water inlet end of the multi-stage centrifugal pump body, a filter assembly is arranged inside the filter housing, a shielding assembly is arranged on the top of the filter assembly, a sealing assembly is arranged on the bottom of the shielding assembly, a connecting assembly is arranged at the connection between the filter housing and the shielding assembly, and an elastic fixing assembly is arranged on one side of the connecting assembly.

[0008] Furthermore, the filter assembly includes a conical bucket, one end of which is in contact with the inner wall of the filter housing, and the other end of which is fixedly connected to a collecting cylinder, and filter holes are provided on the outer surfaces of the conical bucket and the collecting cylinder.

[0009] Furthermore, the shielding assembly includes a T-slot, which is arranged on the outer surface of the filter housing, an arc plate is arranged inside the T-slot, one end of the conical bucket is fixedly connected to the inner wall of the arc plate, the inner wall of the arc plate is fixedly connected to a support rod, and the bottom end of the support rod is fixedly connected to the collecting tube.

[0010] Furthermore, the sealing assembly includes a sealing ring, which is fixedly connected to the inner wall of the arc plate, and a first sealing groove is opened on the inner wall of the T-slot corresponding to the sealing ring; a sealing plate is fixedly connected to the bottom of the arc plate, and a second sealing groove is opened on the inner wall of the T-slot corresponding to the sealing plate.

[0011] Furthermore, the connection assembly includes a first connection block, which is fixedly connected to the outer surface of the arc plate, and the outer surface of the filter housing is fixedly connected to a plug-in frame, a plug-in block is plugged into the plug-in frame, and the plug-in block is movably connected to the plug-in frame.

[0012] Furthermore, the elastic fixing assembly includes a fixing block, the fixing block is fixedly connected to the filter housing, one side of the fixing block is movably connected with a fixing rod, one side of the plug-in frame is provided with a fixing hole, the fixing hole passes through the plug-in frame and the plug-in block, the fixing rod is movably connected to the fixing hole, the outer surface of the fixing rod is fixedly connected with a connecting block, one side of the connecting block is fixedly connected with a connecting rod, a spring is fixedly connected between the fixing block and the connecting block, two connecting rods are symmetrically arranged, and one end of the two connecting rods is fixedly connected with a pulling handle.

[0013] Furthermore, a handle is fixedly connected to the outer surface of the arc-shaped plate, and a connecting flange is fixedly connected to one end of the filter housing.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model can pull the elastic fixing component so that the elastic fixing component no longer fixes the connecting component, and then extract the filter component from the inside of the filter housing through the shielding component to clean the collected impurities. The entire operation process only requires pulling the elastic fixing component, which makes it more convenient to clean the impurities collected by the filter component.

[0016] 2. The utility model can drive the two connecting rods to move by pulling the handle, and the two connecting rods move the fixing rods out from the inside of the corresponding fixing holes through multiple connecting blocks so that the fixing rods no longer fix the plug-in blocks inside the plug-in frame. In summary, the arrangement of multiple plug-in frames, plug-in blocks and fixing rods ensures the stability of the arc plate when it is in the T-slot. At the same time, when contacting multiple fixing rods to fix the plug-in blocks, it is only necessary to pull the pulling handle, and the whole operation is relatively convenient.

[0017] 3. The utility model moves the arc plate to the inside of the T-slot, so that the sealing ring is directly moved to the inside of the first sealing groove, and the sealing plate is directly moved to the inside of the second sealing groove. This arrangement makes the connection between the arc plate and the T-slot sealed, so that liquid is not likely to leak at the connection between the arc plate and the T-slot when flowing through the inside of the filter housing.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the external contour structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the filter housing structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the connection assembly of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the elastic fixing component of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the filter assembly of the utility model;

[0025] Figure 6 For the utility model Figure 5 Rear view structure diagram;

[0026] Figure 7 This is a schematic diagram of the arc plate structure of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Multi-stage centrifugal pump body; 2. Filter housing; 3. Filter assembly; 301. Conical bucket; 302. Collecting cylinder; 303. Filter hole; 4. Shielding assembly; 401. T-slot; 402. Arc plate; 403. Support rod; 5. Sealing assembly; 501. Sealing ring; 502. First sealing groove; 503. Sealing plate; 504. Second sealing groove; 6. Connecting assembly; 601. Connecting block; 602. Plug-in frame; 603. Plug-in block; 7. Elastic fixing assembly; 701. Fixing block; 702. Fixing rod; 703. Fixing hole; 704. Connecting block; 705. Connecting rod; 706. Spring; 707. Pull handle; 8. Pick-up handle; 9. Connecting flange. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] See also Figure 1-Figure 7 As shown, the utility model is a multi-stage centrifugal pump with impurity collection, comprising a multi-stage centrifugal pump body 1, a filter housing 2 is provided at the water inlet end of the multi-stage centrifugal pump body 1, a filter assembly 3 is provided inside the filter housing 2, a shielding assembly 4 is provided on the top of the filter assembly 3, a sealing assembly 5 is provided at the bottom of the shielding assembly 4, a connecting assembly 6 is provided at the connection between the filter housing 2 and the shielding assembly 4, and an elastic fixing assembly 7 is provided on one side of the connecting assembly 6.

[0032] When liquid flows into the interior of the multi-stage centrifugal pump body 1 through the filter housing 2, the filter assembly 3 inside the filter housing 2 can filter impurities in the liquid. When it is necessary to clean the impurities collected by the filter assembly 3, the elastic fixing assembly 7 is directly pulled so that the elastic fixing assembly 7 no longer fixes the connecting assembly 6. At this time, the shielding assembly 4 is directly pulled upward, so that the shielding assembly 4 drives the filter assembly 3 to move directly out of the filter housing 2 and clean the collected impurities.

[0033] By setting the connecting component 6 and the elastic fixing component 7, when cleaning the impurities collected in the filter component 3, the elastic fixing component 7 is directly pulled so that the elastic fixing component 7 no longer pulls the connecting component 6, and then the filter component 3 is extracted from the inside of the filter housing 2 through the shielding component 4. The whole process only requires pulling the elastic fixing component 7, which makes it more convenient to clean the impurities collected in the filter component 3.

[0034] In one embodiment, for the above-mentioned filter assembly 3, the filter assembly 3 includes a conical bucket 301, one end of the conical bucket 301 is in contact with the inner wall of the filter housing 2, and the other end of the conical bucket 301 is fixedly connected to a collecting cylinder 302, and the outer surfaces of the conical bucket 301 and the collecting cylinder 302 are both provided with filter holes 303.

[0035] The outwardly expanded end of the conical bucket 301 is in contact with the inner wall of the filter housing 2. When the liquid flows into the interior of the filter housing 2, the conical bucket 301 can filter out impurities in the liquid through the filter holes 303. At the same time, the filtered impurities can directly flow into the interior of the collection cylinder 302 under the impact of the water flow and the guidance of the conical bucket 301, so that the collection cylinder 302 can collect the filtered impurities. Since the collection cylinder 302 is connected to the smaller end of the port of the filter housing 2, a larger gap is left between the collection cylinder 302 and the inner wall of the filter housing 2. In addition, the collection cylinder 302 is also provided with filter holes 303, so that the impurities collected in the collection cylinder 302 can easily block the liquid flowing from the interior of the filter housing 2, and the collection cylinder 302 can also better collect impurities.

[0036] In one embodiment, for the above-mentioned shielding assembly 4, the shielding assembly 4 includes a T-slot 401, the T-slot 401 is arranged on the outer surface of the filter housing 2, an arc plate 402 is arranged inside the T-slot 401, one end of the conical bucket 301 is fixedly connected to the inner wall of the arc plate 402, the inner wall of the arc plate 402 is fixedly connected to a support rod 403, and the bottom end of the support rod 403 is fixedly connected to the collecting tube 302.

[0037] By pulling the arc plate 402, the arc plate 402 can drive the collecting cylinder 302 to move upward through the connecting rod 403, and the collecting cylinder 302 can be moved out from the inside of the filter housing 2 through the T-slot 401. The setting of the support rod 403 makes the connection between the arc plate 402 and the collecting cylinder 302 relatively firm. At the same time, the arc plate 402 is also T-shaped as a whole. This setting makes the sealing at the connection between the arc plate 402 and the T-slot 401 better when the arc plate 402 moves to the inside of the T-slot 401.

[0038] In one embodiment, for the above-mentioned sealing assembly 5, the sealing assembly 5 includes a sealing ring 501, the sealing ring 501 is fixedly connected to the inner wall of the arc plate 402, the inner wall of the T-slot 401 is provided with a first sealing groove 502 corresponding to the sealing ring 501, the bottom of the arc plate 402 is fixedly connected with a sealing plate 503, and the inner wall of the T-slot 401 is provided with a second sealing groove 504 corresponding to the sealing plate 503.

[0039] When the arc plate 402 moves to the inside of the T-slot 401, the sealing ring 501 is driven by the arc plate 402 to move directly to the inside of the first sealing groove 502, and the sealing plate 503 is driven by the arc plate 402 to move directly to the inside of the second sealing groove 504. The above arrangement makes the connection between the arc plate 402 and the T-slot 401 sealed, so that it is not easy for liquid to leak at the connection between the arc plate 402 and the T-slot 401 when flowing through the inside of the filter housing 2.

[0040] In one embodiment, for the above-mentioned connecting component 6, the connecting component 6 includes a first connecting block 601, the first connecting block 601 is fixedly connected to the outer surface of the arc plate 402, the outer surface of the filtering housing 2 is fixedly connected with a plug-in frame 602, the plug-in block 603 is plugged into the interior of the plug-in frame 602, and the plug-in block 603 is movably connected to the plug-in frame 602.

[0041] When the arc plate 402 moves to the inside of the T-slot 401, the first connecting block 601 can also be directly moved to the inside of the plug-in frame 602 driven by the arc plate 402. At the same time, plug-in frames 602 and plug-in blocks 603 are provided on both sides of the arc plate 402 and the filter housing 2. Under the limitation of the plug-in frames 602 and the plug-in blocks 603 on both sides, the arc plate 402 is not prone to shaking when it is at the top of the filter housing 2.

[0042] In one embodiment, for the above-mentioned elastic fixing component 7, the elastic fixing component 7 includes a fixing block 701, the fixing block 701 is fixedly connected to the filter housing 2, one side of the fixing block 701 is movably connected with a fixing rod 702, one side of the plug-in frame 602 is provided with a fixing hole 703, the fixing hole 703 penetrates the plug-in frame 602 and the plug-in block 603, the fixing rod 702 is movably connected to the fixing hole 703, the outer surface of the fixing rod 702 is fixedly connected with a connecting block 704, one side of the connecting block 704 is fixedly connected with a connecting rod 705, a spring 706 is fixedly connected between the fixing block 701 and the connecting block 704, two connecting rods 705 are symmetrically arranged, and one end of the two connecting rods 705 is fixedly connected with a pulling handle 707.

[0043] When the plug-in block 603 moves to the inside of the plug-in frame 602, the spring 706 pushes the fixing rod 702 through one of the connecting blocks 704 and makes the fixing rod 702 move directly to the inside of the fixing hole 703. At this time, driven by the connecting rod 705, the multiple fixing rods 702 can move to the inside of the corresponding fixing holes 703, so that the plug-in block 603 is not easy to move out of the plug-in frame 602. By pulling the pulling handle 707, the pulling handle 707 drives the two connecting rods 705 to move. At this time, the connecting rod 70 The spring 706 can be squeezed by the connecting block 704, so that the fixing rod 702 can move out from the fixing hole 703 on the plug-in frame 602. At this time, the fixing rod 702 no longer fixes the plug-in block 603 inside the plug-in frame 602, and then the arc plate 402 is directly pulled upward, so that the arc plate 402 drives the plug-in block 603 to move out from the inside of the plug-in frame 602. At the same time, the collecting cylinder 302 is also driven by the arc plate 402 to directly move out from the inside of the filter housing 2. The whole operation is relatively convenient.

[0044] In one embodiment, for the arc-shaped plate 402 , a handle 8 is fixedly connected to the outer surface of the arc-shaped plate 402 , and a connecting flange 9 is fixedly connected to one end of the filter housing 2 .

[0045] The multi-stage centrifugal pump body 1 can be connected to an external pipeline through the connecting flange 9 , and the provision of the taking handle 8 makes it more convenient to lift the arc plate 402 out from the inside of the T-slot 401 .

[0046] Through the above technical scheme, 1. By pulling the elastic fixing component 7, the elastic fixing component 7 can be made to no longer fix the connecting component 6, and then the filter component 3 can be extracted from the inside of the filter housing 2 through the shielding component 4 to clean the collected impurities. The entire operation process only requires pulling the elastic fixing component 7, so that it is more convenient to clean the impurities collected by the filter component 3; 2. By pulling the handle 707, the two connecting rods 705 can be driven to move, and the two connecting rods 705 move the fixing rods 702 out of the corresponding fixing holes 703 through the multiple connecting blocks 704 and make the fixing rods 702 no longer fix the plug-in blocks 603 inside the plug-in frame 602. In summary, the multiple plug-in frames 6 02. The arrangement of the plug-in block 603 and the fixing rod 702 ensures the stability of the arc plate 402 when it is inside the T-slot 401. At the same time, when the plug-in block 603 is fixed by contacting multiple fixing rods 702, it is only necessary to pull the pulling handle 707, and the whole operation is relatively convenient; 3. By moving the arc plate 402 to the inside of the T-slot 401, the sealing ring 501 is directly moved to the inside of the first sealing groove 502, and the sealing plate 503 is directly moved to the inside of the second sealing groove 504. This arrangement seals the joints between the arc plate 402 and the T-slot 401, so that the liquid is not easy to leak at the joints between the arc plate 402 and the T-slot 401 when flowing through the inside of the filter housing 2.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multistage centrifugal pump with impurity collection, comprising a multistage centrifugal pump body (1), characterized in that: A filter housing (2) is provided at the water inlet end of the multi-stage centrifugal pump body (1); a filter assembly (3) is provided inside the filter housing (2); a shielding assembly (4) is provided at the top of the filter assembly (3); a sealing assembly (5) is provided at the bottom of the shielding assembly (4); a connecting assembly (6) is provided at the connection between the filter housing (2) and the shielding assembly (4); and an elastic fixing assembly (7) is provided on one side of the connecting assembly (6).

2. A multi-stage centrifugal pump with impurity collection according to claim 1, characterized in that: The filter assembly (3) comprises a conical bucket (301), one end of the conical bucket (301) is in contact with the inner wall of the filter housing (2), the other end of the conical bucket (301) is fixedly connected to a collection cylinder (302), and the outer surfaces of the conical bucket (301) and the collection cylinder (302) are both provided with filter holes (303).

3. A multi-stage centrifugal pump with impurity collection according to claim 2, characterized in that: The shielding assembly (4) comprises a T-shaped slot (401), wherein the T-shaped slot (401) is arranged on the outer surface of the filter housing (2), an arc-shaped plate (402) is arranged inside the T-shaped slot (401), one end of the conical bucket (301) is fixedly connected to the inner wall of the arc-shaped plate (402), the inner wall of the arc-shaped plate (402) is fixedly connected to a support rod (403), and the bottom end of the support rod (403) is fixedly connected to the collection cylinder (302).

4. A multi-stage centrifugal pump with impurity collection according to claim 3, characterized in that: The sealing assembly (5) comprises a sealing ring (501), wherein the sealing ring (501) is fixedly connected to the inner wall of the arc-shaped plate (402), a first sealing groove (502) is provided on the inner wall of the T-shaped groove (401) corresponding to the sealing ring (501), a sealing plate (503) is fixedly connected to the bottom of the arc-shaped plate (402), and a second sealing groove (504) is provided on the inner wall of the T-shaped groove (401) corresponding to the sealing plate (503).

5. A multi-stage centrifugal pump with impurity collection according to claim 3, characterized in that: The connection assembly (6) comprises a first connection block (601), the first connection block (601) is fixedly connected to the outer surface of the arc plate (402), the outer surface of the filter housing (2) is fixedly connected to a plug-in frame (602), a plug-in block (603) is plugged into the interior of the plug-in frame (602), and the plug-in block (603) is movably connected to the plug-in frame (602).

6. A multi-stage centrifugal pump with impurity collection according to claim 5, characterized in that: The elastic fixing assembly (7) comprises a fixing block (701), the fixing block (701) is fixedly connected to the filter housing (2), one side of the fixing block (701) is movably connected to a fixing rod (702), one side of the plug-in frame (602) is provided with a fixing hole (703), the fixing hole (703) penetrates the plug-in frame (602) and the plug-in block (603), the fixing rod (702) is movably connected to the fixing hole (703), the outer surface of the fixing rod (702) is fixedly connected to a connecting block (704), one side of the connecting block (704) is fixedly connected to a connecting rod (705), a spring (706) is fixedly connected between the fixing block (701) and the connecting block (704), two connecting rods (705) are symmetrically arranged, and one end of the two connecting rods (705) is fixedly connected to a pulling handle (707).

7. A multi-stage centrifugal pump with impurity collection according to claim 3, characterized in that: A handle (8) is fixedly connected to the outer surface of the arc-shaped plate (402), and a connecting flange (9) is fixedly connected to one end of the filter housing (2).

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