High-temperature-corrosion-resistant PPS pump shell structure of shield pump

Abstract

The utility model relates to the technical field of shield pumps, in particular to a high-temperature-corrosion-resistant PPS pump shell structure of a shield pump, which comprises a pump shell, an inner cavity is arranged in the pump shell, an auxiliary assembly for temporary filling after corrosion penetration is arranged in the pump shell, and the auxiliary assembly comprises a gas bin arranged in the pump shell. A display panel is arranged on the inner wall of the air bin, a plurality of cavities are formed in the air bin, partition plates and bearing plates are arranged in the cavities, a plurality of through holes are formed in the inner walls of the bearing plates, tooth blocks are arranged on the inner walls of the through holes, and storage bags are arranged in the cavities. The space is additionally arranged in the pump shell, the permeated holes are filled after the pump shell is corroded and permeated, so that the temporary stable use of the pump body is ensured, and the color is used for reminding when the liquid polyphenylene sulfide leaks, so that the inspection treatment is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of shielded pump technology, specifically to a high-temperature corrosion resistant PPS pump casing structure for a shielded pump. Background Technology

[0002] A canned motor pump consists of a canned motor and a pump unit. The stator and rotor are isolated by non-magnetic, corrosion-resistant thin-walled sleeves. The rotor is supported by front and rear bearings and immersed in the pumped medium, thus eliminating the need for any type of dynamic seal to prevent leakage of the pumped medium. PPS pump casings are widely used in canned motor pump applications due to these characteristics. The use of PPS pump casings can improve the reliability and safety of canned motor pumps in these fields, while reducing maintenance costs and environmental pollution risks.

[0003] However, although PPS pump casings currently have high corrosion resistance, they cannot completely prevent corrosion. Over time, the corrosion resistance of the pump casing material will decrease due to continuous contact with corrosive materials. Furthermore, improper maintenance or physical damage will accelerate the corrosion of the pump casing. However, the corrosion status of the pump casing can generally only be determined through regular inspections. If corrosion is detected but not addressed in time, it will affect the normal use of the pump. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature corrosion resistant PPS pump casing structure for a shielded pump, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-temperature corrosion resistant PPS pump casing structure for a shielded pump includes a pump casing with an internal cavity. An auxiliary component for temporary filling after corrosion penetration is provided inside the pump casing. The auxiliary component includes an air chamber disposed inside the pump casing, a display panel on the inner wall of the air chamber, multiple cavities inside the air chamber, partitions and support plates inside each cavity, multiple through holes on the inner wall of the support plates, toothed blocks on the inner wall of each through hole, and storage bags inside each cavity.

[0007] As a preferred embodiment of this utility model, the air chamber is located inside the pump casing and is filled with high-pressure gas, so that the air chamber is in a high-pressure environment. The display panel is embedded and connected to the inside of the air chamber near the outside of the pump casing, and the display panel is transparent.

[0008] As a preferred embodiment of this utility model, a plurality of cavities are distributed in a ring on the inner wall of the air chamber, and the plurality of cavities are all connected to the interior of the air chamber, with the other end of the plurality of cavities corresponding to the outer wall of the inner cavity.

[0009] As a preferred embodiment of this utility model, both the partition and the support plate are arc-shaped structures and are connected to the inner wall of the cavity. The storage bag is located between the partition and the support plate and is bonded to the inner wall of the cavity by adhesive.

[0010] As a preferred embodiment of this utility model, the array of multiple through holes is distributed inside the support plate, the toothed block is connected to the inner wall of the through hole, and the storage bag is made of flexible material. After being corroded and penetrated into the cavity inside the inner cavity, the storage bag is squeezed and extended into the through hole by the flow of high-pressure gas.

[0011] As a preferred embodiment of this utility model, the storage bag is filled with liquid polyphenylene sulfide, and the liquid polyphenylene sulfide is brightly colored by dyeing material, and the liquid polyphenylene sulfide solidifies after being discharged from the storage bag.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: Addressing the problems raised in the background art, this application employs an auxiliary component. By hollowing out an air chamber and cavity within the pump casing, and loading high-pressure gas into the air chamber to create a high-pressure environment, a storage bag containing liquid polyphenylene sulfide (PPS) is placed in the cavity. When the material corrodes and penetrates the inner cavity of the pump casing, it communicates with the cavity. After this communication, the high-pressure gas in the air chamber flows towards the penetration holes, increasing the gas flow in the corresponding cavity. The air pressure flow, combined with the through-holes in the support plate, forces the storage bag into the through-holes. The toothed blocks in the through-holes puncture the storage bag, causing the liquid PPS to leak and fill the penetration holes. The air pressure, combined with the cooling generated by the flow, causes the liquid PPS to solidify and fill the holes, providing temporary relief and ensuring temporary usability. A display panel on the outside of the pump casing facilitates observation of the internal condition, enabling filling after corrosion penetration, ensuring pump operation, and providing display reminders for timely handling.

[0013] This invention adds space inside the pump casing and fills the holes caused by corrosion and seepage in the pump casing to ensure the temporary stable use of the pump body. It also provides a color warning when liquid polyphenylene sulfide leaks, which facilitates monitoring and handling. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the internal cavity of the pump casing of this utility model;

[0016] Figure 3 This is an enlarged view of part A of this utility model.

[0017] In the diagram: 1. Pump casing; 2. Inner cavity; 3. Air chamber; 301. Display panel; 4. Cavity; 401. Partition plate; 5. Support plate; 501. Through hole; 502. Tooth block; 6. Storage bag. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Example

[0019] Please see Figure 1-3 This utility model provides a technical solution: a high-temperature corrosion resistant PPS pump casing structure for a shielded pump, comprising a pump casing 1, an inner cavity 2 inside the pump casing 1, and an auxiliary component for temporary filling after corrosion penetration. The auxiliary component includes an air chamber 3 inside the pump casing 1, which is filled with high-pressure gas, thereby increasing the gas pressure in the air chamber 3 and multiple cavities 4, placing the cavities 4 in a high-pressure environment, facilitating the storage of liquid polyphenylene sulfide in the storage bag 6 under high pressure. The storage bag 6 remains in a liquid state under continuous conditions. The inner wall of the gas chamber 3 is equipped with a display panel 301, which, through its transparency, facilitates observation of the conditions inside the cavity 4. The gas chamber 3 contains multiple cavities 4, each containing a partition 401 and a support plate 5. The partition 401 and support plate 5 support and position the storage bag 6. The inner wall of the support plate 5 has multiple through holes 501, which divide the cavity 4 into two sections connected by the through holes 501. Similarly, toothed blocks 502 are provided on the inner walls of multiple through holes 501, and storage bags 6 are provided inside multiple cavities 4. The storage bags 6 can store liquid polyphenylene sulfide. When the cavity wall of the pump housing 1 is corroded and permeated, resulting in a hole, the gas in the cavity 4 and the gas chamber 3 will flow towards the hole and through the through holes 501 on the support plate 5 in the corresponding cavity 4 to the hole. At the same time, the pressure caused by the gas flow will squeeze the storage bag 6, causing the storage bag 6 to deform and extend into the through hole 501. The storage bag 6 can be punctured by the toothed block 502 inside the through hole 501 to expose the liquid polyphenylene sulfide inside and fill the hole. After the liquid polyphenylene sulfide flows out, the pressure and temperature changes at the hole cause it to solidify and seal the hole, ensuring the stability of temporary use and the normal use of the pump. In addition, since the liquid polyphenylene sulfide is brightly colored, it will stick to the display panel 301 after exposure, so that the staff can observe the corrosion from the appearance and remind the staff to carry out timely maintenance.

[0020] For an example, please refer to... Figure 1-3The air chamber 3 is located inside the pump casing 1 and is filled with high-pressure gas, creating a high-pressure environment inside the air chamber 3. The display panel 301 is embedded and connected to the interior of the air chamber 3 near the exterior of the pump casing 1, and the display panel 301 is transparent. Multiple cavities 4 are arranged in a ring on the inner wall of the air chamber 3, and all cavities 4 communicate with the interior of the air chamber 3. The other end of each cavity 4 corresponds to the exterior of the inner wall of the inner cavity 2. The partition plate 401 and the support plate 5 are both arc-shaped structures and connected to the inner wall of the cavity 4. The storage bag 6 is located between the partition plate 401 and... The support plates 5 are connected to each other and to the inner wall of the cavity 4 by adhesive. Multiple through holes 501 are arrayed inside the support plates 5. The toothed blocks 502 are connected to the inner wall of the through holes 501. The storage bag 6 is made of flexible material. After being corroded and penetrated into the cavity 4 inside the inner cavity 2, the storage bag 6 is pushed into the through holes 501 by the flow of high-pressure gas. The storage bag 6 is filled with liquid polyphenylene sulfide, and the liquid polyphenylene sulfide is brightly colored by dyeing material. The liquid polyphenylene sulfide solidifies after being discharged from the storage bag 6. When the material being pumped by the shielded pump corrodes and permeates the cavity wall of the pump casing 1, it will seep into the cavity 4 inside the pump casing 1. When a hole is formed, the airflow in the air chamber 3 and the cavity 4 will flow towards the hole. The gas flowing into the cavity 4 can squeeze and deform the storage bag 6 and extend it into the through hole 501 in the support plate 5. The toothed block 502 in the through hole 501 will puncture the storage bag 6, exposing the liquid polyphenylene sulfide inside the storage bag 6 and allowing it to flow into the hole. The liquid polyphenylene sulfide will solidify inside the hole and fill and seal it, ensuring the normal operation of the pump. When the storage bag 6 ruptures, the liquid polyphenylene sulfide inside will splash onto the display panel 301. The display panel 301 allows observation of the situation inside the cavity 4, which is convenient for reminding the staff.

[0021] The working process of this utility model is as follows: During use, when the material conveyed by the shielded pump corrodes and permeates the cavity wall of the pump casing 1, it will seep into the cavity 4 inside the pump casing 1. When a hole is formed, the airflow in the air chamber 3 and the cavity 4 will flow towards the hole. The gas flowing into the cavity 4 will squeeze and deform the storage bag 6, extending it into the through hole 501 in the support plate 5. The toothed block 502 in the through hole 501 will puncture the storage bag 6, exposing the liquid polyphenylene sulfide inside the storage bag 6 and allowing it to flow into the hole. The liquid polyphenylene sulfide will then solidify inside the hole, filling and sealing it, ensuring the normal operation of the pump. When the storage bag 6 ruptures, the liquid polyphenylene sulfide inside will splash onto the display panel 301, allowing observation of the situation inside the cavity 4 and facilitating alerts to personnel. This utility model adds space inside the pump casing and fills the permeation holes after corrosion and permeation of the pump casing, ensuring temporary stable operation of the pump. The color-coded warning for liquid polyphenylene sulfide leakage facilitates monitoring and handling.

[0022] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature corrosion resistant PPS pump casing structure for a shielded pump, comprising a pump casing (1), wherein an inner cavity (2) is provided inside the pump casing (1), and an auxiliary component is provided inside the pump casing (1) for temporary filling after corrosion penetration, characterized in that: The auxiliary components include an air chamber (3) disposed inside the pump housing (1), a display panel (301) disposed on the inner wall of the air chamber (3), a plurality of cavities (4) disposed inside the air chamber (3), a partition plate (401) and a support plate (5) disposed inside each of the plurality of cavities (4), a plurality of through holes (501) disposed on the inner wall of the support plate (5), a toothed block (502) disposed on the inner wall of each of the plurality of through holes (501), and a storage bag (6) disposed inside each of the plurality of cavities (4).

2. The high-temperature corrosion resistant PPS pump casing structure for a canned motor pump according to claim 1, characterized in that: The gas chamber (3) is located inside the pump casing (1) and is filled with high-pressure gas, so that the gas chamber (3) is in a high-pressure environment. The display panel (301) is embedded and connected to the inside of the gas chamber (3) near the outside of the pump casing (1), and the display panel (301) is transparent.

3. The high-temperature corrosion resistant PPS pump casing structure for a canned motor pump according to claim 1, characterized in that: Multiple cavities (4) are arranged in a ring on the inner wall of the air chamber (3), and all of the multiple cavities (4) are connected to the interior of the air chamber (3). The other end of the multiple cavities (4) corresponds to the outside of the cavity wall inside the inner cavity (2).

4. The high-temperature corrosion resistant PPS pump casing structure for a canned motor pump according to claim 1, characterized in that: Both the partition (401) and the support plate (5) are arc-shaped structures and are connected to the inner wall of the cavity (4). The storage bag (6) is located between the partition (401) and the support plate (5) and is bonded to the inner wall of the cavity (4) by adhesive.

5. The high-temperature corrosion resistant PPS pump casing structure for a canned motor pump according to claim 1, characterized in that: Multiple through holes (501) are arrayed inside the support plate (5). The toothed block (502) is connected to the inner wall of the through hole (501). The storage bag (6) is made of flexible material. After being corroded and penetrated into the cavity (4) inside the inner cavity (2), the storage bag (6) is squeezed and extended into the through hole (501) by the flow of high pressure gas.

6. The high-temperature corrosion resistant PPS pump casing structure for a canned motor pump according to claim 1, characterized in that: The storage bag (6) contains liquid polyphenylene sulfide, which is brightly colored by dyeing material, and solidifies after being removed from the storage bag (6).

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