CN216642475U

CN216642475U - Anti-corrosion chemical pump

Info

Publication number: CN216642475U
Application number: CN202220140178.6U
Authority: CN
Inventors: 胡兴; 涂定国
Original assignee: Chongqing Tianzhiyuan Machinery Co ltd
Current assignee: Chongqing Tianzhiyuan Machinery Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-05-31
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses an anti-corrosion chemical pump, which comprises a pump shell and a base, wherein the base is connected with the pump shell; a water inlet and a water outlet are formed in the pump shell; the water inlet is connected with a volute, and the volute is positioned in the pump shell; an impeller is arranged in the volute and is connected with the power assembly through an impeller connecting shaft; a water inlet valve is arranged at the joint of the water inlet and the volute, and is provided with a boss for limiting the relative movement of the water inlet valve and the volute. The connection between the water inlet valve and the volute is more reliable, and the water inlet valve is not sucked into the volute cavity, so that the stability of the anticorrosive chemical pump is improved.

Description

Anti-corrosion chemical pump

Technical Field

The utility model relates to an anti-corrosion chemical pump, and belongs to the field of medium delivery pumps.

Background

Besides strong electrochemical corrosion characteristics, seawater also contains a large number of microorganisms, and some microorganisms are easy to attach to the metal surface to form a biological film. The biological film is a microbial community structure and comprises aerobic bacteria and anaerobic bacteria, and the biological film is gradually changed from aerobic microorganisms serving as main bodies to anaerobic microorganisms serving as main bodies on metal, particularly on the surface of a steel structure along with the increase of the soaking time. Many marine organisms and microorganisms adsorb to the surface of chemical pumps or other metal structures that are in direct contact with seawater and grow and multiply. Particularly in warm sea areas and in spring and summer, the pests grow and multiply rapidly, and the fouling is particularly serious. These marine organisms can damage the metal surface anticorrosive protective layer (e.g. paint film peeling) and accelerate the local corrosion of the metal structure. Some marine organisms themselves can corrode metals, and these corrosions can also reduce the service life of the chemical pump.

The overflowing part of the pump is in direct contact with seawater, microorganisms in the seawater can be attached to an inner flow channel of the pump, the surface of the flow channel can be stained and corroded, water flow resistance is increased, the overflowing area of the flow channel can be reduced, and therefore the performance of the pump is changed, operating points can deviate, and normal work of the pump is affected. In order to solve the technical problem that metal chemical pumps are easy to corrode, some chemical pumps are made of plastic materials. However, in the existing chemical pump made of plastic material, the connection between the water inlet valve and the volute casing is mostly made by adopting a bonding mode. Because of the large suction force that creates the vacuum when the pump is started, the inlet valve is often drawn into the chamber, causing the pump to fail.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anti-corrosion chemical pump, which solves the technical problem of poor stability of the chemical pump in the prior art.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: an anticorrosion chemical pump comprises a pump shell and a base connected with the pump shell; a water inlet is formed in the pump shell; the water inlet is connected with a volute, and the volute is positioned in the pump shell; a water inlet valve is arranged at the joint of the water inlet and the volute, and is provided with a boss for limiting the relative movement of the water inlet valve and the volute.

Preferably, the base is provided with a first reinforcing rib, and the reinforcing rib radially extends to the edge of the base flange along the joint of the impeller connecting shaft and the base. And a second reinforcing rib is arranged on the pump shell and is arranged at the edge of the pump shell flange. The arrangement of the first reinforcing rib and the second reinforcing rib enables the strength of the pump at the edge to be increased, and therefore the service life of the pump is prolonged.

Preferably, the water inlet valve comprises a water inlet valve body and a water blocking block, the water blocking block is connected with the water inlet valve body, and the water blocking block is provided with a free end. The water inlet valve body is connected with the boss.

Preferably, the boss is located outside the volute, a water inlet valve mounting port is formed in the volute at the water inlet, and the water inlet valve body penetrates through the mounting port to be connected with the boss. The arrangement of the lug boss ensures that the connection between the water inlet valve and the volute is more reliable, the water inlet valve is not easy to be sucked into the cavity of the volute, and the continuous use stability of the chemical pump is ensured.

Preferably, a groove is formed in the connecting end of the water blocking block and the water inlet valve body; the groove is positioned on the contact surface of the water blocking block and the water inlet. The connecting end of the water blocking block and the water inlet valve body is provided with a groove, so that a water flow channel is formed between the water blocking block and the water inlet when the pump is in a working state.

Preferably, the profile of the water inlet valve body is continuously provided with a boss, so that the connection stability of the water inlet valve and the volute is further improved.

Preferably, the pump shell and the base are both provided with flanges, and the pump shell flange and the base flange are connected in a sealing mode through the connecting assembly, so that the sealing performance of the chemical pump is guaranteed.

Preferably, the materials used for the pump casing, base, volute and impeller are all PA66+30 GF.

Preferably, the material used for the water inlet valve is nitrile rubber.

According to the utility model, the boss is arranged on the water inlet valve, so that the connection between the water inlet valve and the volute is more reliable, and the water inlet valve is not sucked into the cavity of the volute, thereby improving the stability of the anti-corrosion chemical pump. The pump body and the base are provided with the reinforcing ribs, so that the integral supporting capacity of the pump is enhanced, the pump is not easy to damage, and the service life of the pump is prolonged.

Drawings

FIG. 1 is a schematic view of a corrosion protection chemical pump according to the present invention;

FIG. 2 is a schematic structural view of a base in the present invention;

FIG. 3 is a cross-sectional view of the anti-corrosive chemical pump of the present invention in an operating state;

FIG. 4 is a schematic view of the inlet valve of the present invention;

FIG. 5 is a schematic view of the inlet valve of the present invention in a pump-priming state.

Wherein: the structure comprises a pump shell 1, a base 2, a connecting assembly 3, a water inlet 4, a water outlet 5, a first reinforcing rib 6, a volute 7, a water inlet valve 8, a water inlet valve body 801, a water retaining block 802, a groove 803, a boss 804, an impeller connecting shaft 9, an impeller 10 and a second reinforcing rib 11.

Detailed Description

For a better understanding of the nature of the utility model, its description is further set forth below in connection with the specific embodiments and the drawings.

The utility model is suitable for extracting liquid with the pH value of 5-9, is particularly suitable for extracting seawater, and particularly relates to an anticorrosive chemical pump which comprises a pump shell 1 and a base 2 connected with the pump shell 1 as shown in figures 1 and 2. The pump shell 1 is provided with a water inlet 4 and a water outlet 5. The pump case 1 and the base 2 are both provided with flanges, and the connecting assembly 3 is used for connecting the pump case 1 flange and the base 2 flange. The base 2 is provided with a first reinforcing rib 6, and the first reinforcing rib 6 radially extends to the edge of the flange of the base 2 along the joint of the impeller connecting shaft 9 and the base 2. The pump shell 1 is provided with a second reinforcing rib 11, and the second reinforcing rib 11 is arranged at the edge of a flange of the pump shell 1.

As shown in fig. 3 to 5, the water inlet 4 is connected to a volute 7, said volute 7 being located inside the pump housing 1. An impeller 10 is arranged in the volute 7. The impeller 10 is connected to the base 2 through an impeller connecting shaft 9.

The materials used for the pump shell 1, the base 2, the first reinforcing rib 6, the volute 7, the impeller 10 and the second reinforcing rib 11 are PA66+30 GF.

A water inlet valve 8 is arranged at the joint of the water inlet 4 and the volute 7. The water inlet valve 8 comprises a water inlet valve body 801, a water blocking block 802 and a boss 804. As a preferable mode of the utility model, the outline of the inlet valve body 801 is continuously provided with a boss 804. The boss 804 is used to limit the relative movement of the inlet valve body 801 and the volute 7. The connecting end of the water block 802 and the water inlet valve body 801 is provided with a groove 803. The groove 803 is positioned on the contact surface of the water blocking piece 802 and the water inlet 4. The water stop block 802 is also provided with a free end.

Preferably, the boss 804 is located outside the volute casing 7, the volute casing 7 is provided with a mounting port of the water inlet valve 8 at the water inlet 4, and the water inlet valve body 801 penetrates through the mounting port to be connected with the boss 804. The material used for the water inlet valve 8 is nitrile rubber.

Before the water-saving chemical pump is used, water needs to be poured before the chemical pump works, and the free end of the water blocking block 802 is located at the closed position to seal the water inlet 4, so that water cannot flow to the water inlet pipeline. When the pump starts, the impeller 10 rotates at a high speed in the cavity of the volute 7, the liquid in the pump body rotates along with the impeller 10, and the liquid is thrown out by the impeller 10 under the action of centrifugal force. After the liquid is thrown out, a vacuum low-pressure area is formed at the center of the impeller 10. The free end of the water block 802 deviates from the closed position due to the action of vacuum, a water flow channel is formed with the water inlet 4, seawater enters the cavity of the volute 7, and the chemical pump starts to work circularly.

It should be noted that while the utility model has been described in terms of the above-mentioned embodiments, there are many other embodiments of the utility model. It will be apparent to those skilled in the art that various changes and modifications can be made herein without departing from the spirit and scope of the utility model, and it is intended that all such changes and modifications fall within the scope of the appended claims and their equivalents.

Claims

1. An anti-corrosive chemical pump, characterized in that: comprises a pump shell (1) and a base (2) connected with the pump shell (1); a water inlet (4) is formed in the pump shell (1); the water inlet (4) is connected with a volute (7), and the volute (7) is positioned in the pump shell (1); a water inlet valve (8) is arranged at the connection position of the water inlet (4) and the volute (7), a boss (804) is arranged on the water inlet valve (8), and the boss (804) is used for limiting the relative movement of the water inlet valve (8) and the volute (7).

2. The corrosion-resistant chemical pump of claim 1, wherein: the water inlet valve (8) comprises a water inlet valve body (801) and a water blocking block (802), the water blocking block (802) is connected with the water inlet valve body (801), and a free end is arranged at the position of a water inlet (4) of the water blocking block (802); the water inlet valve body (801) is connected with the boss (804).

3. The antiseptic chemical pump of claim 2 wherein: the boss (804) is located outside the volute (7), a water inlet valve (8) mounting port is formed in the position, at the water inlet (4), of the volute (7), and the water inlet valve body (801) penetrates through the mounting port to be connected with the boss (804).

4. The antiseptic chemical pump of claim 2 wherein: a groove (803) is formed in the connecting end of the water blocking block (802) and the water inlet valve body (801); the groove (803) is positioned on the contact surface of the water blocking block (802) and the water inlet (4).

5. An antiseptic chemical pump as defined in any one of claims 2 to 4 wherein: the outline of the water inlet valve body (801) is continuously provided with a boss (804).

6. The corrosion-resistant chemical pump of claim 1, wherein: the pump shell (1) and the base (2) are both provided with flanges, and the pump shell (1) flange and the base (2) flange are connected in a sealing mode through the connecting assembly (3).

7. The antiseptic chemical pump of claim 6 wherein: the base (2) is provided with a first reinforcing rib (6), and the first reinforcing rib (6) radially extends to the edge of the flange of the base (2) along the joint of the impeller connecting shaft (9) and the base (2).

8. The antiseptic chemical pump of claim 6 wherein: the pump shell (1) is provided with a second reinforcing rib (11), and the second reinforcing rib (11) is arranged at the edge of a flange of the pump shell (1).

9. The corrosion-resistant chemical pump of claim 1, wherein: the materials used by the pump shell (1), the base (2), the volute (7) and the impeller (10) are PA66+30 GF.

10. The corrosion-resistant chemical pump of claim 1, wherein: the material used by the water inlet valve (8) is nitrile rubber.