Corrosion-resistant submersible sewage pump impeller

Abstract

The utility model relates to the technical field of submersible sewage pumps, and discloses a corrosion-resistant submersible sewage pump impeller which comprises a base plate, a connecting shaft and blades are fixedly installed at the upper end of the base plate, a connecting hole is formed in the connecting shaft, a baffle is arranged at the upper end of the base plate, and a first arc-shaped plate and a second arc-shaped plate are fixedly installed at the upper end of the baffle. A first positioning block is fixedly installed on the outer side of the first arc-shaped plate, and a second positioning block is fixedly installed on the outer side of the second arc-shaped plate. The baffle, the first arc-shaped plate, the second arc-shaped plate, the pressing plate and the positioning ring are matched with one another, liquid can be prevented from making direct contact with the base plate and the blades, the corrosion resistance of the impeller is improved, corresponding parts can be rapidly replaced after damage occurs, the coatings are arranged on the outer sides of the blades, and the service life of the impeller is prolonged. And a chemical barrier can be formed on the surface of the blade to block most chemicals, so that the corrosion resistance of the impeller is further improved, and the service life of the impeller is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of submersible sewage pumps, in particular to a corrosion-resistant submersible sewage pump impeller. Background Art

[0002] A submersible sewage pump is a device specially used to transport wastewater or sewage containing solid particles or fibrous matter. It can transport wastewater or sewage from a low place to a high place and has a self-priming function. It does not require water to be added before starting. The impeller is an important component of the submersible sewage pump and is used to transport wastewater or sewage.

[0003] Nowadays, when most submersible sewage pumps are in use, the impeller surface is in direct contact with wastewater or sewage. Wastewater or sewage often contains corrosive components. Long-term use will cause damage to the impeller, and the corrosion resistance cannot be further improved. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a corrosion-resistant submersible sewage pump impeller, which can solve the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a corrosion-resistant submersible sewage pump impeller, comprising a chassis, a connecting shaft and blades fixedly mounted on the upper end of the chassis, a connecting hole starting from the inside of the connecting shaft, a baffle provided at the upper end of the chassis, an arc plate 1 and an arc plate 2 fixedly mounted on the upper end of the baffle, a positioning block 1 fixedly mounted on the outer side of the arc plate 1, a positioning block 2 fixedly mounted on the outer side of the arc plate 2, a positioning groove 1 and a positioning groove 2 are provided on the outer side of the blade, a coating is provided on the outer side of the blade, a pressure plate is fixedly mounted on one end of the baffle close to the connecting shaft, and a positioning ring is threadedly mounted on the outer side of the connecting shaft.

[0008] Preferably, the centers of the chassis, the connecting shaft and the connecting hole are located on the same vertical line, and a plurality of the blades are arranged in a ring shape.

[0009] Through the above technical solution, the output end of the submersible sewage pump motor is connected to the connecting shaft through the connecting hole.

[0010] Preferably, the baffles are arranged in a ring shape in plurality, and the arc plate 1 and the arc plate 2 are respectively fitted with two sides of the blade.

[0011] Through the above technical solution, the baffle, the first curved plate and the second curved plate have a shielding effect on the bottom plate and the blades, thereby preventing the liquid from directly contacting the bottom plate and the blades.

[0012] Preferably, two positioning blocks 1 are respectively provided on the outer side of the arc-shaped plate 1, and the positioning blocks 1 are fitted with the inner side of the positioning groove 1.

[0013] Through the above technical solution, the positioning block slides into the positioning groove and guides the arc plate.

[0014] Preferably, two second positioning blocks are respectively provided on the outer side of the second arc-shaped plate, and the second positioning blocks are fitted with the inner side of the second positioning groove.

[0015] Through the above technical solution, the second positioning block slides into the second positioning groove, guiding the second arc-shaped plate.

[0016] Preferably, the coating is specifically made of epoxy resin paint, and the baffle, the first curved plate and the second curved plate are specifically made of polytetrafluoroethylene.

[0017] Through the above technical solution, the epoxy resin coating can form a chemical barrier on the surface of the blade, blocking most chemicals and improving the corrosion resistance of the submersible sewage pump impeller. The baffle, curved plate one and curved plate two made of polytetrafluoroethylene have the characteristics of acid and alkali resistance and resistance to various organic solvents, avoiding direct contact of liquid with the chassis and blades, and further improving the corrosion resistance of the impeller.

[0018] Preferably, the center of the positioning ring and the center of the connecting shaft are located on the same vertical line, and the positioning ring is fitted with the upper end of the pressure plate.

[0019] Through the above technical solution, after the baffle is installed, the positioning ring is rotated and installed to the outside of the connecting shaft, and the baffle, arc plate 1 and arc plate 2 are positioned through the pressure plate.

[0020] Compared with the prior art, the present invention provides a corrosion-resistant submersible sewage pump impeller, which has the following beneficial effects:

[0021] 1. The utility model prevents the liquid from directly contacting the chassis and blades by cooperating with the baffle, arc plate 1, arc plate 2, pressure plate and positioning ring, thereby improving the corrosion resistance of the impeller. After damage occurs, the corresponding parts can also be quickly replaced.

[0022] 2. The utility model provides a coating on the outer side of the blade, which can form a chemical barrier on the surface of the blade to block most chemicals, further improving the corrosion resistance of the impeller and thus increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 4 For this utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0027] Among them: 1. Chassis; 2. Connecting shaft; 3. Blade; 4. Connecting hole; 5. Baffle; 6. Arc plate 1; 7. Arc plate 2; 8. Positioning block 1; 9. Positioning block 2; 10. Positioning groove 1; 11. Positioning groove 2; 12. Coating; 13. Press plate; 14. Positioning ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] like Figure 1-4 As shown, the utility model provides a corrosion-resistant submersible sewage pump impeller, including a chassis 1, a connecting shaft 2 and a blade 3 are fixedly installed on the upper end of the chassis 1, a connecting hole 4 is provided inside the connecting shaft 2, a baffle 5 is provided on the upper end of the chassis 1, an arc plate 1 6 and an arc plate 2 7 are fixedly installed on the upper end of the baffle 5, a positioning block 1 8 is fixedly installed on the outer side of the arc plate 1 6, a positioning block 2 9 is fixedly installed on the outer side of the arc plate 2 7, a positioning groove 10 and a positioning groove 2 11 are provided on the outer side of the blade 3, a coating 12 is provided on the outer side of the blade 3, a pressure plate 13 is fixedly installed on one end of the baffle 5 close to the connecting shaft 2, and a positioning ring 14 is threadedly installed on the outer side of the connecting shaft 2.

[0031] Specifically, the centers of the chassis 1, the connecting shaft 2 and the connecting hole 4 are located on the same vertical line, and a plurality of blades 3 are arranged in an annular shape. Advantageously, the output end of the submersible sewage pump motor is connected to the connecting shaft 2 through the connecting hole 4.

[0032] Specifically, the baffle 5 is provided in a plurality of annular shapes, and the arc plate 1 6 and the arc plate 2 7 are respectively attached to the two sides of the blade 3. The advantage is that the baffle 5, the arc plate 1 6 and the arc plate 2 7 have a shielding effect on the bottom plate 1 and the blade 3, preventing the liquid from directly contacting the bottom plate 1 and the blade 3.

[0033] Specifically, two positioning blocks 8 are provided on the outside of the curved plate 6, and the positioning blocks 8 fit in the inside of the positioning groove 10. The advantage is that the positioning blocks 8 slide into the positioning groove 10, guiding the curved plate 6.

[0034] Specifically, two positioning blocks 2 9 are respectively provided on the outer side of the arc-shaped plate 2 7 , and the positioning blocks 2 9 fit in the inner side of the positioning groove 2 11 . The advantage is that the positioning blocks 2 9 slide into the positioning groove 2 11 and play a guiding role for the arc-shaped plate 2 7 .

[0035] Example 2:

[0036] like Figure 1-4 As shown, as an improvement to the previous embodiment, the coating 12 is specifically made of epoxy resin paint, and the baffle 5, curved plate 1 6, and curved plate 2 7 are specifically made of polytetrafluoroethylene. Advantageously, the epoxy resin coating 12 forms a chemical barrier on the surface of the blades 3, blocking most chemicals and improving the corrosion resistance of the submersible sewage pump impeller. The polytetrafluoroethylene baffle 5, curved plate 1 6, and curved plate 2 7 are resistant to acids, alkalis, and various organic solvents, preventing direct contact of liquids with the chassis 1 and blades 3, further improving the corrosion resistance of the impeller.

[0037] Specifically, the center of the locating ring 14 is located on the same vertical line as the center of the connecting shaft 2, and the locating ring 14 is in contact with the upper end of the pressure plate 13. Advantageously, after the baffle 5 is installed, the locating ring 14 can be rotated and installed outside the connecting shaft 2, thereby positioning the baffle 5, curved plate 1 6, and curved plate 2 7 through the pressure plate 13.

[0038] When in use, the baffle 5, the curved plate 1 6 and the curved plate 2 7 are installed from top to bottom to the upper end of the chassis 1, the positioning block 1 8 slides into the positioning groove 10, and the positioning block 2 9 slides into the positioning groove 2 11, respectively guiding the curved plate 1 6 and the curved plate 2 7 to prevent shaking. After all the installation is completed, the positioning ring 14 is rotated and installed to the outside of the connecting shaft 2, and the baffle 5, the curved plate 1 6 and the curved plate 2 7 are positioned by the pressure plate 13. The coating 12 of the epoxy resin paint can make the surface of the blade 3 It forms a chemical barrier to block most chemicals and improve the corrosion resistance of the submersible sewage pump impeller. The baffle 5, curved plate 1 6 and curved plate 2 7 made of polytetrafluoroethylene have the characteristics of acid, alkali and various organic solvents, avoiding direct contact of liquid with the chassis 1 and the blades 3, further improving the corrosion resistance of the impeller. When the baffle 5, curved plate 1 6 and curved plate 2 7 are damaged, the positioning ring 14 is rotated, and then the baffle 5, curved plate 1 6 and curved plate 2 7 can be removed and replaced, effectively improving the service life of the submersible sewage pump impeller.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant submersible sewage pump impeller, comprising a chassis (1), characterized in that: The upper end of the chassis (1) is fixedly mounted with a connecting shaft (2) and a blade (3), the interior of the connecting shaft (2) begins to have a connecting hole (4), the upper end of the chassis (1) is provided with a baffle (5), the upper end of the baffle (5) is fixedly mounted with an arc plate 1 (6) and an arc plate 2 (7), the outer side of the arc plate 1 (6) is fixedly mounted with a positioning block 1 (8), the outer side of the arc plate 2 (7) is fixedly mounted with a positioning block 2 (9), the outer side of the blade (3) is provided with a positioning groove 1 (10) and a positioning groove 2 (11), the outer side of the blade (3) is provided with a coating (12), the end of the baffle (5) close to the connecting shaft (2) is fixedly mounted with a pressure plate (13), and the outer side of the connecting shaft (2) is threadedly mounted with a positioning ring (14).

2. The corrosion-resistant submersible sewage pump impeller according to claim 1, characterized in that: The centers of the chassis (1), the connecting shaft (2) and the connecting hole (4) are located on the same vertical line, and a plurality of blades (3) are arranged in an annular shape.

3. The corrosion-resistant submersible sewage pump impeller according to claim 1, characterized in that: The baffles (5) are provided in a plurality of ring shapes, and the arc-shaped plate 1 (6) and the arc-shaped plate 2 (7) are respectively fitted with two sides of the blade (3).

4. The corrosion-resistant submersible sewage pump impeller according to claim 1, characterized in that: Two positioning blocks (8) are respectively provided on the outer sides of the arc-shaped plate (6), and the positioning blocks (8) are fitted with the inner sides of the positioning grooves (10).

5. The corrosion-resistant submersible sewage pump impeller according to claim 1, characterized in that: Two positioning blocks (9) are respectively provided on the outer sides of the arc-shaped plate (7), and the positioning blocks (9) fit in with the inner sides of the positioning grooves (11).

6. The corrosion-resistant submersible sewage pump impeller according to claim 1, characterized in that: The coating (12) is specifically made of epoxy resin paint, and the baffle (5), the first curved plate (6) and the second curved plate (7) are specifically made of polytetrafluoroethylene.

7. The corrosion-resistant submersible sewage pump impeller according to claim 1, characterized in that: The center of the positioning ring (14) and the center of the connecting shaft (2) are located on the same vertical line, and the positioning ring (14) is fitted with the upper end of the pressing plate (13).

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