Centrifugal pump

Abstract

The utility model provides a centrifugal pump, which belongs to the technical field of industrial components, aims to solve the problems of large workload and high cost of wax mould modification by modifying a pump cover wax mould cover plate in the prior art, and comprises a centrifugal pump shaft, a centrifugal impeller, a centrifugal pump cover, an adjusting cover plate, a sealing component, a centrifugal suspension, a centrifugal pump body, a pump body connecting mechanism and a rotating shaft protecting mechanism, the centrifugal impeller is arranged on the left side of the centrifugal pump shaft; the centrifugal pump cover is located on the outer end face of the centrifugal pump shaft. The adjusting cover plate is in bolted connection with the left side of the centrifugal pump cover; the sealing component is arranged in the centrifugal pump cover; the centrifugal suspension is located on the outer end faces of the centrifugal pump shaft and the centrifugal pump cover. The centrifugal pump body is fixedly connected to the left end face of the centrifugal suspension. The pump body connecting mechanism is arranged in the centrifugal suspension; and the rotating shaft protection mechanism is arranged on the centrifugal suspension. The gap between the impeller and the pump cover is conveniently adjusted through the pump body connecting mechanism, and the safety of the centrifugal pump is improved through the rotating shaft protection mechanism.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of industrial parts, more specifically, it relates to a centrifugal pump. BACKGROUND

[0002] The centrifugal pump is a pump for conveying liquid by centrifugal force generated by rotation of an impeller, the impeller rotates in a pump casing formed by a pump body and a pump cover, and the centrifugal pump is internally provided with the pump cover and the impeller, and the gap between the pump cover and the impeller has strict requirements, if the gap is too small, friction will occur between the impeller and the pump cover, and various problems are likely to occur.

[0003] According to CN201921976472.5, the utility model discloses a centrifugal pump, include: bearing box, connect on the installation base, pump shaft, wear in bearing box, and both ends protrude in bearing box outside, pump cover, central part cover in pump shaft, and the periphery is positioned with bearing box, sealing structure, cover in pump shaft, connect on pump cover, and set up between bearing box and pump cover, form the seal between pump shaft and pump cover, impeller, connect on pump shaft, one end with sealing structure abut, and one side with pump cover gap cooperation, spacer, cover in pump shaft, inducer, cover in pump shaft, and with the other end of spacer abut, two first locking nuts, connect on pump shaft, for inducer pressure, pump body, with pump cover positioning, connect on bearing box, and limiting piece, connect at the import of pump body, with the outer circle clearance cooperation of pump shaft, overcome the technical problem that the impeller and pump shaft are prone to eccentric rotation, cause the stability of centrifugal pump operation is poor, is easy to appear the vibration.

[0004] Based on the above, the existing centrifugal pump adjusts the gap between the pump cover and the impeller by modifying the pump cover wax mold to change the thickness of the pump cover, but modifying the pump cover wax mold cover plate will have a large amount of work to modify the wax mold, and the cost is high, the too thick pump cover is prone to shrinkage hole in the casting process, and needs to be reworked or even directly scrapped, which affects the production efficiency and yield; at the same time, the wax mold casting cycle is long, which affects the production efficiency of the pump cover. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a kind of centrifugal pump, to solve the gap between the existing centrifugal pump adjusting pump cover and impeller by modifying the thickness of pump cover wax mold to change the thickness of pump cover, but modifying the pump cover wax mold cover plate will have a large amount of work to modify the wax mold, and the cost is high, the too thick pump cover is prone to shrinkage hole in the casting process, and needs to be reworked or even directly scrapped, which affects the production efficiency and yield;At the same time, the wax mold casting cycle is long, which affects the production efficiency of the pump cover.

[0006] The purpose and effect of the utility model centrifugal pump are achieved by the following specific technical means:

[0007] The centrifugal pump comprises a centrifugal pump shaft, a connecting rotating shaft, a centrifugal impeller, a centrifugal pump cover, an adjusting cover plate, a sealing component, a centrifugal suspension, a centrifugal pump body, a centrifugal inlet, a pump body connecting mechanism and a rotating shaft protection mechanism.

[0008] Further, the centrifugal impeller comprises an impeller nut, centrifugal blades and a centrifugal hub.

[0009] Further, the sealing component comprises a packing ring, sealing packing and a packing gland.

[0010] Further, the pump body connecting mechanism comprises a centrifugal male end and a centrifugal female end.

[0011] Further, the pump body connecting mechanism further comprises a centrifugal shaft sleeve and a centrifugal bearing.

[0012] Further, the pump body connecting mechanism further comprises a centrifugal pump seat and a sealing ring.

[0013] Further, the rotation shaft protection mechanism comprises a protection placing seat, protection screw holes and protection bolts; the protection placing seat is located at the right side of the rear end surface of the centrifugal suspension; the protection screw holes are provided in groups, and the protection screw holes in the groups are respectively arranged at four corners of the protection placing seat and the rear end surface of the centrifugal suspension; and the protection bolts are provided in groups, and the protection bolts in the groups are respectively threadedly connected in the protection screw holes.

[0014] Further, the rotation shaft protection mechanism further comprises a protection sleeve, a protection rotation shaft and a protection rubber block; the protection sleeve is rotatably arranged at the right end surface of the centrifugal suspension, the protection sleeve is sleeved with the outer end surface of the connecting rotation shaft, the protection sleeve is a silica gel cylinder structure, the protection sleeve is in plug-in connection with the protection placing seat, the protection rotation shaft is rotatably connected in the right end surface of the centrifugal suspension, and the protection sleeve is fixedly connected with the protection rotation shaft; and the protection rubber block is fixedly connected with the inner end surface of the protection sleeve and located at the outer end surface of the connecting rotation shaft.

[0015] Compared with the prior art, the centrifugal pump has the following beneficial effects:

[0016] The pump body connecting mechanism is adopted to adjust the gap between the adjusting cover plate and the centrifugal impeller and the centrifugal pump cover, the gap between the impeller and the pump cover is adjusted, different wax molds are not needed to be designed for casting pump covers with different sizes and thicknesses, the production cycle and production cost are greatly reduced, the existing pump cover can be reused, waste and inventory accumulation are avoided, and other components of the centrifugal pump are connected, so that normal use of the centrifugal pump is ensured.

[0017] The rotation shaft protection mechanism is adopted to prevent the centrifugal pump from being knocked during transportation and storage, the connecting rotation shaft is protected in the protection sleeve, the problem that the connecting rotation shaft is deformed due to knocking is avoided, the problem that the centrifugal pump is damaged due to knocking during transportation is reduced, and the safety of the centrifugal pump is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure schematic view of the centrifugal pump of the utility model.

[0019] Figure 2 is a structure schematic view of the centrifugal suspension of the utility model Figure 1 .

[0020] Figure 3 is a structure schematic view of the centrifugal suspension of the utility model.

[0021] Figure 4 is a structure schematic view of the centrifugal suspension of the utility model.

[0022] Figure 5 is the structural schematic diagram of the protective sleeve and the connecting rotating shaft of the utility model.

[0023] Figure 6 is the structural schematic diagram of the protective sleeve of the utility model.

[0024] In the drawing, the corresponding relationship of component names and the figure numbers is:

[0025] 1, centrifugal pump shaft; 101, connecting rotating shaft; 2, centrifugal impeller; 201, impeller nut; 202, centrifugal blade; 203, centrifugal hub; 3, centrifugal pump cover; 301, centrifugal male end; 4, adjusting cover plate; 401, centrifugal female end; 5, sealing component; 501, packing ring; 502, sealing packing; 503, packing gland; 6, centrifugal suspension; 601, centrifugal shaft sleeve; 602, centrifugal bearing; 7, centrifugal pump body; 701, centrifugal pump seat; 8, centrifugal inlet; 801, sealing ring; 9, protective placing seat; 10, protective screw hole; 11, protective bolt; 12, protective sleeve; 1201, protective rotating shaft; 13, protective rubber block. DETAILED DESCRIPTION

[0026] The embodiment of the utility model is further described in detail in combination with the drawings and examples.

[0027] Example one:

[0028] As shown in the accompanying drawings: Figure 1 to the accompanying drawings: Figure 2 As shown in the accompanying drawings:

[0029] The utility model provides a centrifugal pump, including centrifugal pump shaft 1, connecting rotating shaft 101, centrifugal impeller 2, centrifugal pump cover 3, adjusting cover plate 4, sealing component 5, centrifugal suspension 6, centrifugal pump body 7, centrifugal inlet 8 and pump body connecting mechanism;Connecting rotating shaft 101 is coaxial fixed connection in centrifugal pump shaft 1 right end face;Centrifugal impeller 2 sets up in centrifugal pump shaft 1 left side;Centrifugal pump cover 3 is located centrifugal pump shaft 1 outer end face left side;Adjusting cover plate 4 bolt connection is in centrifugal pump cover 3 left end face, and adjusting cover plate 4 slides in centrifugal impeller 2 right end face;Sealing component 5 sets up in centrifugal pump cover 3 inside;Centrifugal suspension 6 is located centrifugal pump shaft 1 and centrifugal pump cover 3 outer end face;Centrifugal pump body 7 fixed connection is in centrifugal suspension 6 left end face;Centrifugal inlet 8 is set up in centrifugal pump body 7 left end face;Pump body connecting mechanism sets up in centrifugal suspension 6 inside.

[0030] The centrifugal impeller 2 comprises an impeller nut 201, centrifugal blades 202 and a centrifugal hub 203. The centrifugal hub 203 is connected to the left end face of the centrifugal pump shaft 1 in a plug-in manner. The impeller nut 201 is threadedly connected to the intermediate position of the centrifugal hub 203 and the intermediate position inside the left end face of the centrifugal pump shaft 1. A plurality of groups of the centrifugal blades 202 are arranged, and the centrifugal blades 202 in each group are fixedly connected to the outer end face of the centrifugal hub 203. In use, when the centrifugal impeller 2 is installed on the left end face of the centrifugal pump shaft 1, the centrifugal hub 203 is inserted into the left end face of the centrifugal pump shaft 1, the impeller nut 201 fixes the centrifugal hub 203 to the left end face of the centrifugal pump shaft 1, and the centrifugal blades 202 are thus installed on the left end face of the centrifugal pump shaft 1.

[0031] The sealing component 5 comprises a packing ring 501, sealing packing 502 and a packing gland 503. The packing ring 501 is located on the left side of the outer end face of the centrifugal pump shaft 1 and rotates inside the centrifugal pump cover 3. The packing gland 503 is located on the left side of the outer end face of the centrifugal pump shaft 1 and is located on the right side of the packing ring 501. The packing gland 503 is inserted into the right end face of the centrifugal pump cover 3. The sealing packing 502 is filled inside the centrifugal pump cover 3 and between the packing ring 501 and the packing gland 503. In use, the packing ring 501 and the packing gland 503 block the sealing packing 502 inside the centrifugal pump cover 3, thereby sealing the inside of the centrifugal pump cover 3.

[0032] The pump body connecting mechanism comprises centrifugal male spigot 301 and centrifugal female spigot 401. Two groups of the centrifugal male spigot 301 are arranged on the upper and lower sides of the centrifugal pump cover 3. Two groups of the centrifugal female spigot 401 are arranged on the upper and lower sides of the adjusting cover plate 4. The two groups of the centrifugal male spigot 301 are respectively connected to the two groups of the centrifugal female spigot 401. In use, the centrifugal male spigot 301 and the centrifugal female spigot 401 facilitate the alignment of the centrifugal pump cover 3 and the adjusting cover plate 4 for bolt connection.

[0033] The pump body connecting mechanism further comprises a centrifugal shaft sleeve 601 and a centrifugal bearing 602. The centrifugal shaft sleeve 601 is bolted to the right end face of the centrifugal suspension 6. The outer ring of the centrifugal bearing 602 is fixedly connected to the inside of the centrifugal shaft sleeve 601, and the inner ring of the centrifugal bearing 602 is fixedly connected to the outer end face of the connecting shaft 101. In use, the centrifugal shaft sleeve 601 and the centrifugal bearing 602 support the connecting shaft 101, so that the connecting shaft 101 rotates on the right end face of the centrifugal shaft sleeve 601.

[0034] The pump body connecting mechanism further comprises: a centrifugal pump base 701 and a sealing ring 801; the centrifugal pump base 701 is provided with two groups, and the two groups of centrifugal pump bases 701 are fixedly connected to the upper and lower end faces of the centrifugal pump body 7; the sealing ring 801 is fixedly connected to the middle position inside the centrifugal pump body 7, and the sealing ring 801 is located at the position of the centrifugal inlet 8; in the use process, the sealing ring 801 ensures the sealing of the centrifugal inlet 8 connection, the centrifugal pump base 701 connects the equipment together, adjusts the gap between the centrifugal pump cover 3 and the centrifugal impeller 2, and the centrifugal pump is normally used.

[0035] The specific use mode and effect of the embodiment one are as follows:

[0036] In the use process, when the centrifugal impeller 2 is installed on the left end face of the centrifugal pump shaft 1, the centrifugal hub 203 is inserted into the left end face of the centrifugal pump shaft 1, the impeller nut 201 fixes the centrifugal hub 203 on the left end face of the centrifugal pump shaft 1, the centrifugal blade 202 is thus installed on the left end face of the centrifugal pump shaft 1, the packing ring 501 and the packing gland 503 block the sealing packing 502 in the centrifugal pump cover 3, the inside of the centrifugal pump cover 3 is filled and sealed, the centrifugal pump cover 3 and the adjusting cover plate 4 are conveniently bolted after being aligned through the centrifugal male stop 301 and the centrifugal female stop 401, the centrifugal shaft sleeve 601 and the centrifugal bearing 602 support the connecting rotating shaft 101, so that the connecting rotating shaft 101 rotates on the right end face of the centrifugal shaft sleeve 601, the sealing ring 801 ensures the sealing of the centrifugal inlet 8 connection, the centrifugal pump base 701 connects the equipment together, the centrifugal pump is normally used, the centrifugal pump connection and installation are realized, and the gap between the centrifugal pump cover 3 and the centrifugal impeller 2 is adjusted.

[0037] Embodiment two:

[0038] On the basis of embodiment one, as shown in the accompanying drawings: Figure 3 to the accompanying drawings: Figure 6 As shown in the accompanying drawings:

[0039] The utility model provides a centrifugal pump still includes rotating shaft protection mechanism, rotating shaft protection mechanism sets up on centrifugal suspension 6, and rotating shaft protection mechanism includes: protection placement seat 9, protection screw hole 10 and protection bolt 11, protection placement seat 9 is located centrifugal suspension 6 rear end face right side, protection screw hole 10 is provided with multiple groups, and multiple groups of protection screw hole 10 are respectively set up in protection placement seat 9 four corners and centrifugal suspension 6 rear end face inside, protection bolt 11 is provided with multiple groups, and multiple groups of protection bolt 11 are respectively screwed in multiple groups of protection screw hole 10 inside, in the use process, when protection placement seat 9 installs on centrifugal suspension 6 rear end face, protection screw hole 10 on protection placement seat 9 and protection screw hole 10 on centrifugal suspension 6 are aligned, and protection bolt 11 installs in protection screw hole 10 inside, thereby fixed centrifugal suspension 6 rear end face with protection placement seat 9.

[0040] The rotation shaft protection mechanism further comprises a protection sleeve 12, a protection rotation shaft 1201 and a protection rubber block 13. The protection sleeve 12 is rotatably arranged at the right end surface of the centrifugal suspension 6, the protection sleeve 12 is sleeved on the outer end surface of the connecting rotation shaft 101, the protection sleeve 12 is a silica gel cylinder structure, the protection sleeve 12 is connected with the protection placing seat 9 in a plug-in manner, the protection rotation shaft 1201 is rotatably connected at the inner part of the right end surface of the centrifugal suspension 6, and the protection sleeve 12 is fixedly connected with the protection rotation shaft 1201. The protection rubber block 13 is fixedly connected to the inner end surface of the protection sleeve 12, and the protection rubber block 13 is located on the outer end surface of the connecting rotation shaft 101. In the use process, the protection sleeve 12 drives the protection rotation shaft 1201 to rotate, the protection sleeve 12 drives the protection rubber block 13 to move, and the protection rubber block 13 is sleeved on the outer end surface of the connecting rotation shaft 101, so that the problem that the connecting rotation shaft 101 is subjected to bumping is avoided.

[0041] The specific use mode and effect of the second embodiment are as follows:

[0042] In the use process, when the protection placing seat 9 is installed at the rear end surface of the centrifugal suspension 6, the protection screw holes 10 on the protection placing seat 9 are aligned with the protection screw holes 10 on the centrifugal suspension 6, the protection bolts 11 are installed in the protection screw holes 10, so that the protection placing seat 9 is fixed at the rear end surface of the centrifugal suspension 6, the protection sleeve 12 drives the protection rotation shaft 1201 to rotate, the protection sleeve 12 drives the protection rubber block 13 to move, and the protection rubber block 13 is sleeved on the outer end surface of the connecting rotation shaft 101, so that the problem that the connecting rotation shaft 101 is subjected to bumping is avoided, and the connecting rotation shaft 101 is protected when the centrifugal pump is not used.

[0043] In this paper, the following points need to be noted:

[0044] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can be referred to the general design.

[0045] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined to obtain new embodiments.

[0046] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A centrifugal pump, comprising a centrifugal pump shaft (1), a connecting shaft (101), a centrifugal impeller (2), a centrifugal pump cover (3), an adjusting cover plate (4), a sealing component (5), a centrifugal suspension (6), a centrifugal pump body (7), a centrifugal inlet (8), a pump body connecting mechanism, and a shaft protection mechanism; wherein the connecting shaft (101) is coaxially and fixedly connected to the right end face of the centrifugal pump shaft (1); characterized in that: The centrifugal impeller (2) is located on the left side of the centrifugal pump shaft (1); the centrifugal pump cover (3) is located on the left side of the outer end face of the centrifugal pump shaft (1); the adjusting cover plate (4) is bolted to the left end face of the centrifugal pump cover (3), and the adjusting cover plate (4) slides on the right end face of the centrifugal impeller (2); the sealing component (5) is located inside the centrifugal pump cover (3); the centrifugal suspension (6) is located on the outer end face of the centrifugal pump shaft (1) and the centrifugal pump cover (3); the centrifugal pump body (7) is fixedly connected to the left end face of the centrifugal suspension (6); the centrifugal inlet (8) is opened on the left end face of the centrifugal pump body (7); the pump body connecting mechanism is located inside the centrifugal suspension (6); the shaft protection mechanism is located on the centrifugal suspension (6).

2. The centrifugal pump as described in claim 1, characterized in that: The centrifugal impeller (2) includes: an impeller nut (201), centrifugal blades (202), and a centrifugal hub (203); the centrifugal hub (203) is inserted and connected to the left end face of the centrifugal pump shaft (1); the impeller nut (201) is threaded and connected to the middle position of the centrifugal hub (203) and the middle position inside the left end face of the centrifugal pump shaft (1); there are multiple sets of centrifugal blades (202), and the multiple sets of centrifugal blades (202) are respectively fixedly connected to the outer end face of the centrifugal hub (203). The multiple sets of centrifugal blades (202) are centrifugal blades (202).

3. A centrifugal pump as described in claim 1, characterized in that: The sealing component (5) includes: a packing ring (501), a sealing packing (502), and a packing gland (503); the packing ring (501) is located on the left side of the outer end face of the centrifugal pump shaft (1), and the packing ring (501) rotates inside the centrifugal pump cover (3); the packing gland (503) is located on the left side of the outer end face of the centrifugal pump shaft (1), and the packing gland (503) is located on the right side of the packing ring (501), and the packing gland (503) is inserted into the right end face of the centrifugal pump cover (3); the sealing packing (502) fills the inside of the centrifugal pump cover (3), and the sealing packing (502) fills between the packing ring (501) and the packing gland (503).

4. A centrifugal pump as described in claim 1, characterized in that: The pump body connection mechanism includes: a centrifugal male stop (301) and a centrifugal female stop (401); there are two sets of centrifugal male stops (301), which are located on the upper and lower sides of the centrifugal pump cover (3); there are two sets of centrifugal female stops (401), which are located on the upper and lower sides of the adjusting cover plate (4), and the two sets of centrifugal male stops (301) are spliced ​​and connected to the two sets of centrifugal female stops (401).

5. A centrifugal pump as described in claim 1, characterized in that: The pump body connecting mechanism also includes: a centrifugal bushing (601) and a centrifugal bearing (602); the centrifugal bushing (601) is bolted to the right end face of the centrifugal suspension (6); the outer ring of the centrifugal bearing (602) is fixedly connected to the inside of the centrifugal bushing (601), and the inner ring of the centrifugal bearing (602) is fixedly connected to the outer end face of the connecting shaft (101).

6. A centrifugal pump as described in claim 1, characterized in that: The pump body connection mechanism also includes: a centrifugal pump seat (701) and a sealing ring (801); there are two sets of centrifugal pump seats (701), and the two sets of centrifugal pump seats (701) are fixedly connected to the upper and lower end faces of the centrifugal pump body (7); the sealing ring (801) is fixedly connected to the middle position inside the centrifugal pump body (7), and the sealing ring (801) is located at the centrifugal inlet (8).

7. A centrifugal pump as described in claim 1, characterized in that: The rotating shaft protection mechanism includes: a protective mounting base (9), protective screw holes (10), and protective bolts (11); the protective mounting base (9) is located on the right side of the rear end face of the centrifugal suspension (6); multiple sets of protective screw holes (10) are provided, and the multiple sets of protective screw holes (10) are respectively opened at the four corners of the protective mounting base (9) and inside the rear end face of the centrifugal suspension (6); multiple sets of protective bolts (11) are provided, and the multiple sets of protective bolts (11) are respectively threaded into the multiple sets of protective screw holes (10).

8. A centrifugal pump as described in claim 7, characterized in that: The rotating shaft protection mechanism further includes: a protective sleeve (12), a protective rotating shaft (1201), and a protective rubber block (13); the protective sleeve (12) rotates on the right end face of the centrifugal suspension (6), the protective sleeve (12) is fitted on the outer end face of the connecting rotating shaft (101), the protective sleeve (12) is a silicone cylindrical structure, the protective sleeve (12) and the protective placement seat (9) are plugged in and connected, the protective rotating shaft (1201) is rotatably connected inside the right end face of the centrifugal suspension (6), and the protective sleeve (12) and the protective rotating shaft (1201) are fixedly connected; the protective rubber block (13) is fixedly connected to the inner end face of the protective sleeve (12), and the protective rubber block is located on the outer end face of the connecting rotating shaft (101).

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