Centrifugal pump cover capable of prolonging service life of centrifugal pump

Abstract

The utility model discloses a centrifugal pump cover capable of prolonging the service life of a centrifugal pump, and relates to the technical field of centrifugal pump covers. The local centrifugal pump cover comprises a pump cover body, a pump shaft and a local centrifugal pump body, a sealing gasket is arranged on the surface of the pump shaft, an O-shaped sealing ring is arranged on the inner wall of a sealing assembly, a top piece is fixedly connected to the surface of an auxiliary assembly, and a fixing block is fixedly connected to the surface of the pump cover body. When the pump cover body is connected, the insertion rod is movably inserted into the surface of the pump cover body, the pump cover body is positioned and connected to the surface of a local centrifugal pump body at the moment, the nut is screwed in, the pump cover body can be fixed to the surface of the local centrifugal pump body, and meanwhile the O-shaped sealing ring is arranged on the inner wall of the installation groove. The purpose that the pump cover body is convenient to install is achieved, installation and fixation are conducted without a plurality of nuts during installation at the moment, meanwhile, the sealing performance of the connecting position can be guaranteed, and the problem that installation is inconvenient is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pump covers, in particular to a centrifugal pump cover capable of extending the service life of a centrifugal pump. Background Art

[0002] A centrifugal pump is a pump that transports liquid by the centrifugal force generated by the rotation of the impeller. Before starting the water pump, the pump casing and the suction pipe must be filled with water, and then the motor is started to make the pump shaft drive the impeller and water to rotate at high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller and flows into the water pressure pipeline of the water pump through the flow channel of the volute pump casing. The pump cover is the main component of the centrifugal pump. When the particles in the fluid medium pass through the pump cover, the particles will directly contact the sealing gasket, so the sealing gasket will be worn, resulting in poor sealing of the centrifugal pump cover, shortening the service life of the centrifugal pump. In order to extend the service life, a centrifugal pump cover that extends the service life of the centrifugal pump is needed.

[0003] An existing centrifugal pump cover for extending the service life of a centrifugal pump can protect the sealing gasket and prevent the sealing gasket from being eroded and worn by particulate matter, thereby extending the service life of the centrifugal pump. However, the pump cover is generally connected by a plurality of nuts. When connecting, not only do the holes need to be aligned, but the pump cover also needs to be held by hand when the nuts are screwed in to prevent the positions of the holes from shifting, which makes the pump cover inconvenient to install.

[0004] For this purpose, a centrifugal pump cover is proposed which can prolong the service life of the centrifugal pump. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that a pump cover is generally connected by a plurality of nuts, which requires not only alignment of the holes but also hand-holding of the pump cover when screwing in the nuts, making the pump cover inconvenient to install. The utility model provides a centrifugal pump cover that prolongs the service life of the centrifugal pump.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A centrifugal pump cover for extending the service life of a centrifugal pump comprises a pump cover body, a pump shaft and a partial centrifugal pump body, a sealing gasket is arranged on the surface of the pump shaft, a protective component for protecting the sealing gasket is arranged on the inner wall of the pump cover body and the surface of the pump shaft, a sealing component is arranged on the surface of the pump cover body, an O-ring is arranged on the inner wall of the sealing component, a positioning component for installing the pump cover is arranged on the surface of the pump cover body, a clamping component for connecting the positioning component is arranged on the surface of the partial centrifugal pump body, an auxiliary component is arranged on the inner wall of the clamping component, a top sheet is fixedly connected to the surface of the auxiliary component, a fixing block is fixedly connected to the surface of the pump cover body, and the fixing block is fixedly connected to the partial centrifugal pump body through a nut.

[0008] Furthermore, the protective component includes a slot, the inner wall of the pump cover body is provided with the slot, the surface of the pump shaft is fixedly connected with a connecting piece, the surface of the connecting piece is fixedly connected with a protective cover, and the protective cover is plugged into the slot.

[0009] Furthermore, the sealing assembly includes a connecting ring, the surface of the pump cover body is fixedly connected with the connecting ring, the surface of the connecting ring is provided with a mounting groove, and an O-ring is arranged on the inner wall of the mounting groove.

[0010] Furthermore, the positioning assembly includes a pressing block, the pressing block is attached to the surface of the pump cover body, an insertion rod is movably inserted into the surface of the pump cover body, and a clamping block is fixedly connected to the surface of the insertion rod.

[0011] Furthermore, the clamping assembly includes a positioning groove, the surface of the pump body of the local centrifugal pump is provided with a positioning groove, the inner wall of the positioning groove is provided with a moving groove, the inner wall of the positioning groove is provided with a clamping groove, and the clamping block is clamped with the clamping groove.

[0012] Furthermore, the auxiliary component includes a storage groove, the inner wall of the positioning groove is provided with the storage groove, the inner wall of the storage groove is fixedly connected with a spring, and the top plate is connected to the spring.

[0013] The beneficial effects of the utility model are as follows:

[0014] When the pump cover body is connected, the plug rod is movably plugged into the surface of the pump cover body, and the pressing block is operated to insert the plug rod into the positioning groove, and the block is aligned and inserted into the movable groove. After the block is moved into the groove, the plug rod is rotated so that the block is engaged in the groove. At this time, the spring is squeezed, and the top plate is tightly fitted with the surface of the plug rod, and the plug rod is squeezed to make the clamping connection between the block and the groove more firm. At this time, the pump cover body is positioned and connected to the surface of the local centrifugal pump body, and then the nut is screwed in through the setting of the fixing block, so that the pump cover body can be fixed to the surface of the local centrifugal pump body. At the same time, an O-ring is provided on the inner wall of the mounting groove, and the sealing of the O-ring ensures the sealing of the connection between the pump cover body and the local centrifugal pump body; the goal of facilitating the installation of the pump cover body is achieved, and at this time, it is not necessary to install and fix through multiple nuts during installation, and the sealing of the connection can also be ensured, avoiding the problem of inconvenience during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a right side schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 3 It is a partial cross-sectional schematic diagram of the utility model;

[0018] Figure 4 It is an enlarged schematic diagram of the structure of point A of the utility model.

[0019] Figure numerals: 1. Pump cover body; 2. Pump shaft; 3. Sealing gasket; 4. Protective assembly; 401. Slot; 402. Connector; 403. Protective cover; 5. Sealing assembly; 501. Connecting ring; 502. Mounting groove; 6. O-ring; 7. Partial centrifugal pump body; 8. Positioning assembly; 801. Pressing block; 802. Insert rod; 803. Card block; 9. Card connection assembly; 901. Positioning groove; 902. Moving groove; 903. Card groove; 10. Auxiliary assembly; 1001. Storage groove; 1002. Spring; 11. Top sheet; 12. Fixed block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element 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 present invention.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a centrifugal pump cover for extending the service life of a centrifugal pump comprises a pump cover body 1, a pump shaft 2 and a partial centrifugal pump body 7, a sealing gasket 3 is arranged on the surface of the pump shaft 2, a protective component 4 for protecting the sealing gasket 3 is arranged on the inner wall of the pump cover body 1 and the surface of the pump shaft 2, a sealing component 5 is arranged on the surface of the pump cover body 1, an O-ring 6 is arranged on the inner wall of the sealing component 5, a positioning component 8 for pump cover installation is arranged on the surface of the pump cover body 1, a clamping component 9 for connecting the positioning component 8 is arranged on the surface of the partial centrifugal pump body 7, an auxiliary component 10 is arranged on the inner wall of the clamping component 9, a top sheet 11 is fixedly connected to the surface of the auxiliary component 10, a fixing block 12 is fixedly connected to the surface of the pump cover body 1, and the fixing block 12 is fixedly connected to the partial centrifugal pump body 7 through a nut; specifically, in the centrifugal pump cover for extending the service life of a centrifugal pump, the inner wall of the pump cover body 1 is provided with the protective component 4 to protect the sealing gasket 3 Blocking protection is performed to prevent the surface of the sealing gasket 3 from being worn, which will not affect the sealing of the centrifugal pump and extend the service life of the centrifugal pump. When the pump cover body 1 is connected, a positioning component 8 is provided on the surface of the pump cover body 1. It is only necessary to align the two positioning components 8 and snap them into the snap-in component 9. At the same time, the auxiliary component 10 makes the positioning component 8 snap in more firmly. At this time, the pump cover body 1 is positioned on the local centrifugal pump body 7, and then the pump cover body 1 is connected and fixed by the fixing block 12. At the same time, through the setting of the sealing component 5, the inner wall of the sealing component 5 is connected with an O-ring 6. Through the sealing of the O-ring 6, the connection sealing between the pump cover body 1 and the local centrifugal pump body 7 is better, achieving the goal of facilitating the installation of the pump cover body 1. At this time, there is no need to install and fix through multiple nuts during installation, and the sealing of the connection can also be guaranteed, avoiding the problem of inconvenience during installation.

[0025] like Figure 2 , Figure 3 As shown, the protective component 4 includes a slot 401, the inner wall of the pump cover body 1 is provided with the slot 401, the surface of the pump shaft 2 is fixedly connected with a connecting piece 402, the surface of the connecting piece 402 is fixedly connected with a protective cover 403, and the protective cover 403 is plugged into the slot 401; specifically, the centrifugal pump cover for extending the service life of the centrifugal pump, the inner wall of the pump cover body 1 is provided with the protective component 4, the surface of the pump shaft 2 is connected with a sealing gasket 3, the protective cover 403 is first plugged into the surface of the pump shaft 2, and the protective cover 403 is plugged into the slot 401, the protective cover 403 is connected and fixed to the surface of the pump shaft 2 through the connecting piece 402, the sealing gasket 3 is blocked and protected to prevent the surface of the sealing gasket 3 from being worn, and when the pump shaft 2 rotates, the protective cover 403 can also rotate in the slot 401, thereby not affecting the sealing of the centrifugal pump and extending the service life of the centrifugal pump.

[0026] like Figure 3 , Figure 4 As shown, the sealing assembly 5 includes a connecting ring 501, the surface of the pump cover body 1 is fixedly connected with the connecting ring 501, the surface of the connecting ring 501 is provided with a mounting groove 502, and the O-ring 6 is arranged on the inner wall of the mounting groove 502; specifically, the sealing assembly 5 is arranged, after the pump cover body 1 is connected to the local centrifugal pump body 7, the connecting ring 501 is inserted into the inner wall of the local centrifugal pump body 7, the inner wall of the mounting groove 502 is provided with an O-ring 6, and the sealing of the O-ring 6 ensures the sealing of the connection between the pump cover body 1 and the local centrifugal pump body 7, and the sealing of the connection can be improved while the connection can be fixed.

[0027] like Figure 3 , Figure 4 As shown, the positioning component 8 includes a pressing block 801, the pressing block 801 is attached to the surface of the pump cover body 1, the surface of the pump cover body 1 is movably plugged with an insertion rod 802, and the surface of the insertion rod 802 is fixedly connected with a clamping block 803; specifically, the positioning component 8 is arranged so that the insertion rod 802 can be moved by the pressing block 801, and the pump cover body 1 can be positioned in the clamping component 9 on the surface of the local centrifugal pump body 7 by the insertion rod 802 and the clamping block 803, cooperating with the connection work of the fixing block 12.

[0028] like Figure 4 As shown, the snap-in assembly 9 includes a positioning groove 901, a positioning groove 901 is provided on the surface of the local centrifugal pump body 7, a movable groove 902 is provided on the inner wall of the positioning groove 901, a snap-in groove 903 is provided on the inner wall of the positioning groove 901, and a snap-in block 803 is snap-into the snap-in groove 903; specifically, a positioning assembly 8 is provided on the surface of the pump cover body 1, and the two positioning assemblies 8 only need to be aligned and snap-into the snap-in assembly 9 at the same time, and the insertion rod 802 is movably inserted into the surface of the pump cover body 1, and the pressing block 801 is operated to insert the insertion rod 802 into the positioning groove 901, and at the same time, the snap-in block 803 is aligned and inserted into the movable groove 902. After the snap-in block 803 is moved into the snap-in groove 903, the insertion rod 802 is rotated so that the snap-in block 803 is snap-into the snap-in groove 903, and the pump cover body 1 is connected.

[0029] like Figure 4As shown, the auxiliary component 10 includes a storage groove 1001, and the inner wall of the positioning groove 901 is provided with a storage groove 1001, the inner wall of the storage groove 1001 is fixedly connected with a spring 1002, and the top plate 11 is connected to the spring 1002; specifically, the spring 1002 is squeezed, the top plate 11 is tightly fitted with the surface of the plug rod 802, and the plug rod 802 is squeezed, so that the clamping block 803 and the clamping groove 903 are more firmly connected. At this time, the pump cover body 1 is positioned and connected to the surface of the local centrifugal pump body 7, and then the nut is screwed in through the setting of the fixing block 12, so that the pump cover body 1 can be fixed to the surface of the local centrifugal pump body 7, so that the pump cover body 1 is more convenient when connected. When disassembling, it is only necessary to screw out the nut, and then rotate the plug rod 802 by pressing the block 801. When the clamping block 803 is aligned with the movable groove 902, the top plate 11 will push the plug rod 802 outward, and then the pump cover body 1 can be directly pulled out.

[0030] In summary: the centrifugal pump cover for extending the service life of the centrifugal pump, the inner wall of the pump cover body 1 is provided with a protective component 4, the surface of the pump shaft 2 is connected with a sealing gasket 3, the protective cover 403 is first inserted into the surface of the pump shaft 2, and the protective cover 403 is inserted into the slot 401, the protective cover 403 is connected and fixed to the surface of the pump shaft 2 through the connecting piece 402, so as to block and protect the sealing gasket 3, and at the same time, when the pump shaft 2 rotates, the protective cover 403 can also rotate in the slot 401, when the pump cover body 1 is connected, the surface of the pump cover body 1 is provided with a positioning component 8, it is only necessary to align and insert the two positioning components 8 into the snap-in component 9 at the same time, the insertion rod 802 is movably inserted into the surface of the pump cover body 1, and the pressing block 801 is operated, the insertion rod 802 is inserted into the positioning groove 901, and the block 803 is aligned and inserted into the movable groove 902, and after the block 803 is moved into the slot 903, the insertion rod 802 is rotated so that the block 803 is engaged in the slot 903. At this time, the spring 1002 is squeezed, and the top plate 11 is tightly fitted with the surface of the plug rod 802, squeezing the plug rod 802, making the engagement between the block 803 and the slot 903 more secure. At this time, the pump cover body 1 is positioned and connected to the surface of the local centrifugal pump body 7. Then, through the setting of the fixing block 12, the nut is screwed in to fix the pump cover body 1 on the surface of the local centrifugal pump body 7. At the same time, the connecting ring 501 is inserted into the inner wall of the local centrifugal pump body 7. The inner wall of the mounting groove 502 is provided with an O-ring 6. The sealing of the O-ring 6 ensures the sealing between the connection between the pump cover body 1 and the local centrifugal pump body 7. When disassembling, it is only necessary to screw out the nut and then rotate the plug rod 802 by pressing the block 801. When the block 803 is aligned with the movable groove 902, the top plate 11 will push the plug rod 802 outward, and then the pump cover body 1 can be directly pulled out.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A centrifugal pump cover for extending the service life of a centrifugal pump, characterized in that: The invention comprises a pump cover body (1), a pump shaft (2) and a local centrifugal pump body (7); a sealing gasket (3) is arranged on the surface of the pump shaft (2); a protective component (4) for protecting the sealing gasket (3) is arranged on the inner wall of the pump cover body (1) and the surface of the pump shaft (2); a sealing component (5) is arranged on the surface of the pump cover body (1); an O-ring (6) is arranged on the inner wall of the sealing component (5); a positioning component (8) for installing the pump cover is arranged on the surface of the pump cover body (1); a clamping component (9) for connecting the positioning component (8) is arranged on the surface of the local centrifugal pump body (7); an auxiliary component (10) is arranged on the inner wall of the clamping component (9); a top sheet (11) is fixedly connected to the surface of the auxiliary component (10); a fixing block (12) is fixedly connected to the surface of the pump cover body (1); and the fixing block (12) is fixedly connected to the local centrifugal pump body (7) via a nut.

2. A centrifugal pump cover for extending the service life of a centrifugal pump according to claim 1, characterized in that: The protective component (4) comprises a slot (401), the inner wall of the pump cover body (1) is provided with the slot (401), the surface of the pump shaft (2) is fixedly connected with a connecting piece (402), the surface of the connecting piece (402) is fixedly connected with a protective cover (403), and the protective cover (403) is plugged into the slot (401).

3. A centrifugal pump cover for extending the service life of a centrifugal pump according to claim 1, characterized in that: The sealing assembly (5) comprises a connecting ring (501), the surface of the pump cover body (1) is fixedly connected with the connecting ring (501), the surface of the connecting ring (501) is provided with a mounting groove (502), and an O-ring (6) is arranged on the inner wall of the mounting groove (502).

4. A centrifugal pump cover for extending the service life of a centrifugal pump according to claim 1, characterized in that: The positioning assembly (8) comprises a pressing block (801), the surface of the pump cover body (1) is fitted with the pressing block (801), the surface of the pump cover body (1) is movably plugged with an insertion rod (802), and the surface of the insertion rod (802) is fixedly connected with a clamping block (803).

5. A centrifugal pump cover for extending the service life of a centrifugal pump according to claim 4, characterized in that: The clamping assembly (9) comprises a positioning groove (901), the surface of the pump body (7) of the local centrifugal pump is provided with a positioning groove (901), the inner wall of the positioning groove (901) is provided with a moving groove (902), the inner wall of the positioning groove (901) is provided with a clamping groove (903), and the clamping block (803) is clamped with the clamping groove (903).

6. A centrifugal pump cover for extending the service life of a centrifugal pump according to claim 5, characterized in that: The auxiliary component (10) comprises a storage groove (1001), the inner wall of the positioning groove (901) is provided with the storage groove (1001), the inner wall of the storage groove (1001) is fixedly connected with a spring (1002), and the top sheet (11) is connected to the spring (1002).

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