CN113898589A

CN113898589A - Corrosion-resistant self-priming pump

Info

Publication number: CN113898589A
Application number: CN202111157051.1A
Authority: CN
Inventors: 吴辉; 徐俊东; 孟金华; 唐宗清; 王清龙
Original assignee: Anhui Yinlong Pump Valve Co ltd
Current assignee: Anhui Yinlong Pump Valve Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-01-07

Abstract

The invention discloses a corrosion-resistant self-priming pump, which comprises a pump body and a working machine part connected with the pump body, wherein one side of the pump body is provided with a liquid inlet, the upper part of the pump body is provided with a liquid outlet, one side of the pump body, which is opposite to the liquid inlet, is provided with a working machine part connecting port, an anti-corrosion lining plate is inserted into an inner cavity of the pump body from the working machine connecting port and is tightly pressed through a pressing ring, the working machine part comprises a shell, the front end of the shell is provided with a cover plate, a pump shaft is arranged in the shell, the front end of the pump shaft penetrates through the cover plate and is connected with an impeller, steps are processed on the cover plate to tightly press the pressing ring, connecting flanges are respectively and correspondingly arranged at the connecting port of the working machine part and on the shell, and the upper part of the pump body is provided with a liquid filling port. According to the invention, the anti-corrosion lining plate is arranged in the pump body, and the pump body structure is easy to disassemble, so that the anti-corrosion lining plate can be conveniently and frequently replaced.

Description

Corrosion-resistant self-priming pump

Technical Field

The invention belongs to the technical field of mechanical equipment, and particularly relates to a corrosion-resistant self-priming pump.

Background

The self-priming pump has the working principle that before the water pump is started, the pump shell is filled with water (or the water is stored in the pump shell). After the impeller is started, the impeller rotates at a high speed to enable water in the impeller channel to flow to the volute, at the moment, the inlet forms vacuum, the water inlet check valve is opened, air in the suction pipe enters the pump and reaches the outer edge through the impeller channel, and then the air is converged with water flowing from the right water return hole and flows along the volute. The liquid continuously impacts the blade grid in the volute and is continuously crushed by the impeller, so that the liquid is intensively stirred and mixed with air to generate a gas-water mixture, and the gas-water mixture continuously flows to cause that gas and water cannot be separated. The mixture is stripped by the baffle at the outlet of the volute and enters the separation chamber along the short pipe. In the separation chamber, the air is separated and discharged through the outlet pipe, and the water flows to the outer edge of the impeller through the left and right return holes and is mixed with the air in the suction pipe. The circulation is repeated, air in the suction pipeline is gradually exhausted, water enters the pump, and the self-suction process is completed. Self-priming pumps are generally used in construction, fire fighting, chemical engineering, pharmacy, dyeing, printing and dyeing, brewing, electric power, electroplating, paper making, petroleum, mining, equipment cooling, oil tanker oil unloading and the like, and often need to be contacted with corrosive liquids. In order to improve the corrosion resistance, the ceramic is embedded in the inner lining of the overflowing part of the metal shell in the prior art, and the ceramic pump has long service life, but is not resistant to hydrofluoric acid, is not maintainable and has high cost.

Disclosure of Invention

In order to solve the problems, the invention discloses a corrosion-resistant self-priming pump, wherein a corrosion-resistant lining plate is arranged in a pump body, and the pump body structure is easy to disassemble, so that the corrosion-resistant lining plate is convenient to frequently replace.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a corrosion-resistant self priming pump, includes the pump body and with pump body coupling's work machine part, one side of the pump body has the inlet, pump body upper portion has the leakage fluid dram, on the pump body with one side that the inlet is relative has work machine part connector, and anticorrosive welt is followed the work machine connector inserts pump body inner chamber and compresses tightly through a clamping ring, work machine part includes the casing, the casing front end is provided with the apron, be provided with the pump shaft in the casing, the front end of pump shaft passes the cover plate connection has the impeller, processing has the step to compress tightly on the apron the clamping ring, work machine part connector department with correspond respectively on the casing and be provided with flange, pump body upper portion is provided with the filling opening.

The corrosion-resistant self-priming pump is characterized in that a front bearing and a rear bearing which are used for supporting the pump shaft are arranged in a shell of the working machine component.

The corrosion-resistant self-priming pump is characterized in that a sliding seal is arranged between the pump shaft and the cover plate.

The corrosion-resistant self-priming pump, liquid feeding mouth department is provided with the check valve.

The corrosion-resistant self-priming pump is characterized in that the corrosion-resistant lining plate is made of a corrosion-resistant inorganic non-metallic material.

The impeller and the end part of the pump shaft of the corrosion-resistant self-priming pump are connected by a straight key and fastened by a radial bolt.

The inner cavity of the pump body of the corrosion-resistant self-priming pump is provided with a step for positioning the corrosion-resistant lining plate.

The corrosion-resistant self-priming pump is characterized in that a sealing element is arranged between the inner cavity of the pump body and the corrosion-resistant lining plate.

The invention has the beneficial effects that:

1. according to the invention, the anti-corrosion lining plate is arranged in the pump body, the anti-corrosion lining plate is inserted into the inner cavity of the pump body from the working machine connecting port and is pressed tightly through the pressing ring, and meanwhile, the pump body is connected with the working machine component through the flange, so that the anti-corrosion lining plate is convenient to disassemble, and is convenient to replace after the lining plate is worn or corroded, and the inner cavity of the pump body is not damaged.

2. The front bearing and the rear bearing used for supporting the pump shaft are arranged in the shell of the working machine part, and the pump shaft can run more stably through the support of the front bearing and the rear bearing.

3. The sliding seal is arranged between the pump shaft and the cover plate, so that the corrosion of corrosive liquid to the interior of a working machine component can be effectively prevented.

4. The check valve is arranged at the liquid filling opening, so that liquid is prevented from flowing back from the liquid filling opening in the working process.

5. The anticorrosive lining plate is made of anticorrosive inorganic non-metallic materials, and has good anticorrosive effect and low cost.

6. The impeller and the end part of the pump shaft are connected by a straight key and fastened by a radial bolt, so that the impeller and the pump shaft are stable in connection structure and easy to disassemble and replace.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.

As shown in fig. 1, the corrosion-resistant self priming pump of this embodiment, including the pump body 1 and with pump body connection's the quick-witted part of worker, one side of the pump body has inlet 3, pump body upper portion has leakage fluid dram 4, on the pump body with one side that the inlet is relative has quick-witted part connector 5, and anticorrosive welt 6 follows the machine connector inserts pump body inner chamber and compresses tightly through a clamping ring 7, the quick-witted part of worker includes casing 2, the casing front end is provided with apron 8, be provided with pump shaft 9 in the casing, the front end of pump shaft passes apron connection has impeller 10, it has the step to compress tightly to process on the apron the clamping ring, quick-witted part connector department with correspond respectively on the casing and be provided with flange 11, pump body upper portion is provided with filling opening 12. The pump body inner chamber of this embodiment is provided with the anticorrosive welt to the anticorrosive welt is followed the working machine connector inserts pump body inner chamber and compresses tightly through a clamping ring, and the change of anticorrosive welt is convenient for to this kind of structure.

In the present embodiment the housing of the machine element is provided with a front bearing 13 and a rear bearing 14 for supporting the pump shaft. The front and the back are respectively provided with the bearings, so that the pump shaft is good in support and stable in operation.

In this embodiment, a sliding seal 15 is provided between the pump shaft and the cover plate, so that corrosive liquid is prevented from entering working machine components, and the insides of the working machine components are effectively isolated.

In this embodiment, a check valve 16 is disposed at the filling opening.

In this embodiment, the anticorrosive lining board is made of an anticorrosive inorganic non-metallic material. The corrosion-resistant inorganic non-metallic material in the present embodiment includes, but is not limited to, enamel, abrasives (silicon carbide, alumina), cast stone (diabase, basalt, etc.), carbon material, non-metallic minerals (asbestos, mica, marble, etc.).

In the embodiment, the impeller and the end part of the pump shaft are connected by a straight key and are fastened by a radial bolt. In the process of disassembly and replacement, the impeller can be pulled out only by opening the radially fixed bolt, and the replacement is convenient.

In this embodiment, the pump body inner chamber is processed and is used for fixing a position the step of anticorrosive welt.

In the embodiment, a sealing element is arranged between the inner cavity of the pump body and the anti-corrosion lining plate.

It should be noted that the above-mentioned contents only illustrate the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and it is obvious to those skilled in the art that several modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations fall within the protection scope of the claims of the present invention.

Claims

1. A corrosion-resistant self-priming pump comprises a pump body (1) and a working machine component connected with the pump body, wherein a liquid inlet (3) is formed in one side of the pump body (1), a liquid outlet (4) is formed in the upper portion of the pump body (1), a working machine component connecting port (5) is formed in one side, opposite to the liquid inlet (3), of the pump body (1), the corrosion-resistant self-priming pump is characterized in that a corrosion-resistant lining plate (6) is inserted into an inner cavity of the pump body from the working machine connecting port (5) and is tightly pressed through a pressing ring (7), the working machine component comprises a shell (2), a cover plate (8) is arranged at the front end of the shell (2), a pump shaft (9) is arranged in the shell (2), the front end of the pump shaft (9) penetrates through the cover plate (8) and is connected with an impeller (10), steps are processed on the cover plate (8) and tightly press the pressing ring (7), a connecting flange (11) is correspondingly arranged at the working machine component (5) and on the shell (2) respectively, the upper part of the pump body (1) is provided with a liquid filling port (12).

2. Corrosion-resistant self-primer pump according to claim 1, characterized in that inside the housing (2) of the working machine part there are arranged a front bearing (13) and a rear bearing (14) for supporting the pump shaft (9).

3. Corrosion-resistant self-primer pump according to claim 1, characterized in that a sliding seal (15) is provided between the pump shaft (9) and the cover plate (8).

4. The corrosion resistant self-primer pump of claim 1 wherein a check valve (16) is disposed at the fill port (12).

5. The corrosion resistant self-primer pump of claim 1 wherein said corrosion resistant liner plate (6) is made of a corrosion resistant inorganic non-metallic material.

6. The erosion resistant self-primer pump of claim 1 wherein said impeller (10) is keyed to the end of said pump shaft (9) and secured thereto by radial bolts.

7. The corrosion-resistant self-primer pump according to claim 1, wherein the pump body (1) is machined with a step for positioning the corrosion-resistant liner (6).

8. The corrosion resistant self-primer pump of claim 1 wherein a seal is provided between the pump body (1) inner chamber and the corrosion resistant liner plate (6).