Impeller of slurry pump

Abstract

The utility model belongs to the technical field of slurry pumps, and particularly relates to a slurry pump impeller which comprises an impeller main disc, and an impeller auxiliary disc is arranged on the upper side of the impeller main disc. When the blade needs to be replaced, the nut is screwed through a wrench, the connecting rod is taken out of the hollow rod, the whole device can be disassembled, a new blade is aligned to the inserting hole and inserted into the hollow rod for positioning, the blade is not prone to shaking, the impeller auxiliary disc is covered, and the hollow rod can be used for supporting; when the impeller auxiliary disc is covered, the clamping plates can be clamped to the outer walls of the blades, alignment of the connecting holes is facilitated, the clamping plates can also provide certain supporting force for the blades in the working process, the connecting rods are inserted into the cavities of the hollow rods through the connecting holes, and therefore the blades are prevented from being damaged. And then the internal threads and the external threads are connected with each other, so that the impeller main disc and the impeller auxiliary disc are connected, and the blades are convenient to mount and replace through the positioning structures.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry pumps, in particular to a slurry pump impeller. Background Art

[0002] Slurry pumps are centrifugal pumps with high efficiency and relatively strong performance that have evolved in recent years due to the large particles in material transportation. Slurry pumps are machines that increase the energy of solid-liquid mixed media by means of centrifugal force. Slurry pumps have a wide range of applications and are widely used in industries such as mining, metallurgy, electricity, coal, chemicals, building materials, and flue gas desulfurization and denitrification systems to transport abrasive or corrosive slurries containing solid particles. Such as slurry transportation in metallurgical ore dressing plants, hydraulic ash removal in thermal power plants, coal slurry and heavy medium transportation in coal washing plants, dredging of rivers, and river desilting. In the chemical industry, some corrosive slurries containing crystals can also be transported. The service life of a slurry pump is a key basis for measuring the level of the product. The most important component in a slurry pump is the impeller, which is a rotating body with blades that transfers energy to the liquid.

[0003] China Public Invention: CN202021285098.7 relates to a new type of slurry pump impeller structure in the field of slurry pump equipment, including an impeller main disc and an impeller sub-disc. A connecting seat connected to the main shaft is arranged at the center of the impeller main disc, a feed port is arranged at the center of the impeller sub-disc, and a plurality of material guide blades are arranged between the impeller main disc and the impeller sub-disc. The impeller main disc, impeller sub-disc, and material guide blades of the utility model are detachably connected, and the position of the material guide blades is limited and reinforced by setting a fixed seat, so that the material guide blades are not easily damaged. The detachable structure allows each material guide blade to be replaced separately without replacing the entire impeller, which is easy to operate and reduces costs.

[0004] When the impeller of the slurry pump is replaced, the blades do not have a positioning structure and are prone to shaking, making it difficult to align the holes of the blades, and inconvenient to replace and install the blades. Therefore, a slurry pump impeller is proposed. Utility Model Content

[0005] The utility model aims to provide a slurry pump impeller to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slurry pump impeller, comprising an impeller main disc, an impeller sub-disc is arranged on the upper side of the impeller main disc, the upper surface of the impeller main disc is fixedly connected with uniformly distributed hollow rods, the inner side wall of the hollow rod is provided with an internal thread, the impeller main disc and the impeller sub-disc are provided with uniformly distributed blades on the adjacent side, the inner side wall of the blade is provided with a pair of insertion holes, the outer side wall of the hollow rod is inserted into the inner side wall of the insertion hole, the lower surface of the impeller sub-disc is fixedly connected with a plurality of groups of clamping plates, the number of the clamping plates in each group is two, and the adjacent side of each group of the clamping plates is clamped with the outer side wall of the blade, the inner side wall of the impeller sub-disc is provided with uniformly distributed connecting holes, the inner side wall of the connecting hole is inserted with a connecting rod, the outer side wall of the connecting rod is provided with an external thread, the external thread is matched with the internal thread, the external thread is threadedly connected with the internal thread, and the end of the connecting rod away from the external thread is fixedly connected with a nut.

[0007] As a further preferred embodiment of the present technical solution: a connecting groove is provided on the lower surface of the impeller main disc.

[0008] As a further preferred embodiment of the present technical solution: a feed port is provided on the inner side wall of the impeller sub-disk.

[0009] As a further preferred embodiment of the present technical solution: a gasket is provided between the upper surface of the impeller sub-disk and the lower surface of the nut.

[0010] As a further preferred embodiment of the technical solution: the blades are arc-shaped, and the numbers of the hollow rods, the clamping plates and the connecting rods are all arranged corresponding to the number of the blades.

[0011] As a further preferred embodiment of the present technical solution: the outer side of the nut is hexagonal.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the blades need to be replaced, the utility model can be used to tighten the nut with a wrench to take the connecting rod out of the hollow rod, and the entire device can be disassembled. The new blade is aligned with the insertion hole and inserted into the hollow rod for positioning so that the blade is not prone to shaking. The impeller sub-disc is covered and supported by the hollow rod to reduce the extrusion of the blades between the impeller main disc and the impeller sub-disc. When the impeller sub-disc is covered, the clamping plate can be clamped on the outer wall of the blade to facilitate the alignment of the connecting hole. The clamping plate can also provide a certain supporting force for the blade during operation. The connecting rod is inserted into the cavity of the hollow rod through the connecting hole, and then the internal thread and the external thread are connected to each other, so that the impeller main disc and the impeller sub-disc are connected. The positioning structure is convenient for installation and replacement of the blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the impeller main disc and the hollow rod in the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the blades and the plug holes in the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the impeller sub-disk, the clamping plate and the connecting hole in the utility model;

[0018] Figure 5 It is a schematic cross-sectional structure diagram of the internal thread, external thread and gasket in the utility model.

[0019] In the figure: 1. impeller main disk; 2. impeller sub-disk; 3. hollow rod; 4. internal thread; 5. blade; 6. socket; 7. clamping plate; 8. connecting hole; 9. connecting rod; 10. external thread; 11. nut; 12. connecting groove; 13. feed port; 14. gasket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as limitations on the present application. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] See also Figure 1-5The utility model provides a technical solution: a slurry pump impeller, comprising an impeller main disc 1, an impeller sub-disk 2 is arranged on the upper side of the impeller main disc 1, the upper surface of the impeller main disc 1 is fixedly connected with uniformly distributed hollow rods 3, the inner side wall of the hollow rod 3 is provided with an internal thread 4, the impeller main disc 1 and the impeller sub-disk 2 are provided with uniformly distributed blades 5 on the adjacent side, a pair of insertion holes 6 are arranged on the inner side wall of the blade 5, the outer side wall of the hollow rod 3 is inserted into the inner side wall of the insertion hole 6, a plurality of groups of clamping plates 7 are fixedly connected to the lower surface of the impeller sub-disk 2, the number of each group of clamping plates 7 is two, and the adjacent side of each group of clamping plates 7 is clamped with the outer side wall of the blade 5, the inner side wall of the impeller sub-disk 2 is provided with uniformly distributed connecting holes 8, the inner side wall of the connecting hole 8 is inserted with a connecting rod 9, the outer side wall of the connecting rod 9 is provided with an external thread 10, the external thread 10 is matched with the internal thread 4, the external thread 10 is threadedly connected with the internal thread 4, and the connecting The end of the connecting rod 9 away from the external thread 10 is fixedly connected with a nut 11; when the blade 5 needs to be replaced, the nut 11 is twisted by a wrench to remove the connecting rod 9 from the hollow rod 3, and the entire device can be disassembled, and the new blade 5 is aligned with the insertion hole 6 and inserted into the hollow rod 3 to be positioned so that the blade 5 is not easy to shake, and the impeller sub-disk 2 is covered, and the hollow rod 3 can be used for support to reduce the extrusion of the blade 5 between the impeller main disk 1 and the impeller sub-disk 2. When the impeller sub-disk 2 is covered, the clamping plate 7 can be engaged on the outer wall of the blade 5 to facilitate the alignment of the connecting hole 8. The clamping plate 7 can also provide a certain supporting force for the blade 5 during operation, and the connecting rod 9 is inserted into the cavity of the hollow rod 3 through the connecting hole 8, and then the internal thread 4 is connected to the external thread 10, so that the impeller main disk 1 and the impeller sub-disk 2 are connected, and the installation and replacement of the blade 5 are convenient through the positioning structure.

[0023] In this embodiment, specifically: a connecting groove 12 is opened on the lower surface of the impeller main disc 1; a connecting seat is installed in the connecting groove 12, and the water pump and the motor are connected through the connecting seat.

[0024] In this embodiment, specifically: a feed port 13 is provided on the inner side wall of the impeller sub-disk 2 ; and the material is transported into the cavity through the feed port 13 .

[0025] In this embodiment, specifically: a gasket 14 is provided between the upper surface of the impeller sub-disk 2 and the lower surface of the nut 11; the gasket 14 is made of rubber material, has good wear resistance and elasticity, and can rebound when the nut 11 is tightened to reduce the loosening of the connecting rod 9.

[0026] In this embodiment, specifically: the blades 5 are arc-shaped, and the numbers of the hollow rods 3 , the clamping plates 7 and the connecting rods 9 are all arranged corresponding to the number of the blades 5 .

[0027] In this embodiment, specifically: the outer side of the nut 11 is hexagonal; the hexagonal shape is convenient for twisting the connecting rod 9 with a wrench.

[0028] The working principle of the utility model is as follows: when the blade 5 needs to be replaced, the nut 11 is screwed with a wrench to remove the connecting rod 9 from the hollow rod 3, and the entire device can be disassembled, and the new blade 5 is aligned with the insertion hole 6 and inserted into the hollow rod 3 to be positioned so that the blade 5 is not easy to shake, and the impeller sub-disc 2 is covered, and the hollow rod 3 can be used to support it, so that the blade 5 is reduced from being squeezed between the impeller main disc 1 and the impeller sub-disc 2. When the impeller sub-disc 2 is covered, the clamping plate 7 can be clamped on the blade 5. On the outer wall of the connecting hole 8, it is convenient for aligning the connecting hole 8. The clamping plate 7 can also provide a certain supporting force for the blade 5 during operation. The connecting rod 9 is inserted into the cavity of the hollow rod 3 through the connecting hole 8, and then the internal thread 4 and the external thread 10 are connected to each other, so as to connect the impeller main disk 1 and the impeller sub-disk 2. The gasket 14 is made of rubber material and has good wear resistance and elasticity. When the nut 11 is tightened, it can rebound to reduce the loosening of the connecting rod 9. The positioning structure is convenient for installing and replacing the blade 5.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slurry pump impeller, comprising an impeller main disc (1), characterized in that: An impeller sub-disk (2) is provided on the upper side of the impeller main disk (1); uniformly distributed hollow rods (3) are fixedly connected to the upper surface of the impeller main disk (1); the inner wall of the hollow rods (3) is provided with internal threads (4); uniformly distributed blades (5) are provided on the adjacent side of the impeller main disk (1) and the impeller sub-disk (2); a pair of insertion holes (6) are provided on the inner wall of the blades (5); the outer wall of the hollow rod (3) is inserted into the inner wall of the insertion hole (6); a plurality of groups of clamping plates (7) are fixedly connected to the lower surface of the impeller sub-disk (2); each group of the clamping plates has a plurality of holes (6) on the inner wall of the blades (5); and the outer wall of the hollow rod (3) is inserted into the inner wall of the insertion hole (6). The number of the clamping plates (7) is two, and the adjacent sides of each group of the clamping plates (7) are clamped with the outer wall of the blade (5). The inner wall of the impeller sub-disk (2) is provided with evenly distributed connecting holes (8), and the inner wall of the connecting hole (8) is inserted with a connecting rod (9). The outer wall of the connecting rod (9) is provided with an external thread (10), and the external thread (10) is matched with the internal thread (4). The external thread (10) is threadedly connected to the internal thread (4), and the end of the connecting rod (9) away from the external thread (10) is fixedly connected with a nut (11).

2. A slurry pump impeller according to claim 1, characterized in that: A connecting groove (12) is provided on the lower surface of the impeller main disc (1).

3. A slurry pump impeller according to claim 1, characterized in that: The inner side wall of the impeller sub-disk (2) is provided with a feed inlet (13).

4. A slurry pump impeller according to claim 1, characterized in that: A gasket (14) is provided between the upper surface of the impeller sub-disk (2) and the lower surface of the nut (11).

5. A slurry pump impeller according to claim 1, characterized in that: The blades (5) are arc-shaped, and the numbers of the hollow rods (3), the clamping plates (7) and the connecting rods (9) are all arranged corresponding to the number of the blades (5).

6. A slurry pump impeller according to claim 1, characterized in that: The outer side of the nut (11) is hexagonal.

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