A corrosion-resistant double-suction pump based on desulfurization system

Abstract

The present invention discloses a corrosion-resistant double-suction pump based on a desulfurization system, comprising a base, a pump body and two end covers, the front of the pump body being connected to a liquid inlet pipe, and the inner wall of the liquid inlet pipe being movably connected to a filter screen, a sealing cover plate being provided on the top of the liquid inlet pipe, and the bottom of the sealing cover plate being fixedly connected to the top of the filter screen, the bottoms of both sides of the liquid inlet pipe being fixedly connected to a limit plate, and the bottoms of both sides of the sealing cover plate being fixedly connected to a vertical plate, and the present invention relates to the technical field of double-suction pumps. The corrosion-resistant double-suction pump based on a desulfurization system filters particulate matter in the liquid by providing a filter screen in the liquid inlet pipe, thereby preventing particulate matter from entering the pump body, and at the same time, by moving the clamping rod out of the clamping slot, the rotating plate can be rotated downward to a vertical state, and then the sealing cover plate can be pulled upward to drive the rotating plate to move out of the limit plate, thereby directly pulling the filter screen out of the liquid inlet pipe, making it easy to clean the filter screen and prevent it from being blocked.

Description

Technical Field

[0001] The invention relates to the technical field of double-suction pumps, in particular to a corrosion-resistant double-suction pump based on a desulfurization system. Background Art

[0002] Currently, self-owned power plants in the power industry, steel industry, chemical industry, and building materials industry need to adopt desulfurization and denitrification processes to treat flue gas emissions and control the atmosphere. Although the equipment structures and process flows of the various flue gas desulfurization technologies currently developed are different, the basic principle is to use alkaline substances as SO2 absorbents. The flue gas desulfurization technology of coal-fired power plants mainly adopts wet desulfurization technology.

[0003] For the desulfurization systems of the ammonia and alkaline processes in wet desulfurization technology, BB1 double-suction pumps are usually used. BB1 pumps, also known as double-suction centrifugal pumps, are a commonly used large centrifugal pump with the characteristics of high head, large flow, compact structure and reliable operation.

[0004] At present, when double-suction pumps are used in wet desulfurization technology, due to the presence of some particulate impurities in the desulfurization liquid, they are easily attached to the impeller and pump body of the double-suction pump, which will affect its normal operation for a long time. In addition, the desulfurization liquid is corrosive and will cause rust on the impeller, shortening the service life of the double-suction pump. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the present invention provides a corrosion-resistant double-suction pump based on a desulfurization system, which solves the problem that some particulate impurities in the desulfurization liquid are easily attached to the impeller and pump body of the double-suction pump, affecting its normal operation for a long time, and the desulfurization liquid is corrosive and will cause rust on the impeller.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a corrosion-resistant double-suction pump based on a desulfurization system, comprising a base, a pump body and two end covers, the front of the pump body is connected to a liquid inlet pipe, and the inner wall of the liquid inlet pipe is movably connected to a filter screen, a sealing cover plate is provided on the top of the liquid inlet pipe, and the bottom of the sealing cover plate is fixedly connected to the top of the filter screen, the bottoms of both sides of the liquid inlet pipe are fixedly connected to a limiting plate, the bottoms of both sides of the sealing cover plate are fixedly connected to a vertical plate, the bottom of the vertical plate passes through the limiting plate and extends to the bottom of the limiting plate, and a limiting component is provided on the side of the vertical plate extending to the bottom of the limiting plate, which is used to fix the sealing cover plate above the liquid inlet pipe.

[0009] Preferably, the limiting assembly includes a rotating plate, a movable groove is provided on the side of the rotating plate away from the vertical plate, and a baffle is slidably connected between the top and bottom of the inner wall of the movable groove, a first spring is fixedly connected between one side of the baffle and one side of the inner wall of the movable groove, a clamping rod is fixedly connected to the side of the baffle away from the first spring, and a clamping groove adapted to the clamping rod is provided at the bottom of both sides of the liquid inlet pipe.

[0010] Preferably, one side of the rotating plate is rotatably connected to the side of the vertical plate extending below the limiting plate, and a handle is fixedly connected to the top of the sealing cover plate.

[0011] Preferably, the two end covers are respectively fixed on both sides of the pump body, and a transmission shaft is rotatably connected between the opposite sides of the inner walls of the two end covers. An impeller is fixedly connected to the surface of the transmission shaft and located inside the pump body, and a liquid outlet pipe is connected to the back of the pump body.

[0012] Preferably, the impeller, the two end covers and the pump body are all made of high-strength stainless steel, and one end of the transmission shaft passes through the end cover and extends to the outside of the end cover.

[0013] Preferably, the bottom of the pump body is fixedly connected to a fixed seat, the bottom of the fixed seat passes through the base and extends to the interior of the base, the four corners between the bottom and the top of the inner wall of the base are fixedly connected to support rods, and the side of the fixed seat extending to the interior of the base is fixedly connected to a movable plate, and the four support rods all pass through the movable plate and extend to the outside of the movable plate.

[0014] Preferably, vibration isolators are fixedly connected to both sides of the bottom of the inner wall of the base, and the top of the vibration isolator is fixedly connected to the bottom of the movable plate.

[0015] Preferably, an annular groove is provided on one side of the inner wall of the two end covers, and the inner wall of the annular groove is fixedly connected to the second spring, a rigid sealing ring is slidably arranged between the two sides of the inner wall of the annular groove, and the surface of the rigid sealing ring is fixedly connected to one end of the second spring, and a trapezoidal sealing ring is fixedly connected to the side of the rigid sealing ring away from the second spring.

[0016] (3) Beneficial effects

[0017] The present invention provides a corrosion-resistant double-suction pump based on a desulfurization system. It has the following beneficial effects:

[0018] (1) The corrosion-resistant double-suction pump based on the desulfurization system filters the particulate matter in the liquid by setting a filter in the liquid inlet pipe to prevent the particulate matter from entering the pump body. At the same time, the card rod is moved out of the card slot, and the rotating plate can be rotated downward to a vertical state. Then, the sealing cover plate is pulled upward to drive the rotating plate to move out of the limit plate, so that the filter can be directly pulled out of the liquid inlet pipe, which is convenient for cleaning the filter and prevents it from being blocked.

[0019] (2) The corrosion-resistant double-suction pump based on the desulfurization system, when the double-suction pump is in operation, the vibration generated is transmitted to the vibration isolator through the fixed seat, and the vibration isolator buffers and reduces the noise of the double-suction pump, thereby reducing the impact of noise and vibration on the surrounding environment and improving work efficiency and stability.

[0020] (3) The corrosion-resistant double-suction pump based on the desulfurization system seals the impeller chamber to prevent leakage by arranging a trapezoidal sealing ring between the pump body and the end cover. At the same time, under the elastic action of the second spring, the rigid sealing ring is driven to squeeze the trapezoidal sealing ring, thereby improving the sealing performance and compensating for the lost elasticity of the trapezoidal sealing ring, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the structure of the present invention;

[0022] Figure 2 is a cross-sectional view of the structure of the present invention;

[0023] Figure 3 is a cross-sectional view of the liquid inlet pipe structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 A partial enlarged view of point A in the middle;

[0025] Figure 5 For the present invention Figure 2 A local enlarged view of the S in the middle;

[0026] Figure 6 This is a disassembled diagram of the internal structure of the base of the present invention.

[0027] In the figure: 1. Base; 2. Pump body; 3. End cover; 4. Liquid inlet pipe; 5. Filter; 6. Sealing cover; 7. Limit plate; 8. Vertical plate; 9. Rotating plate; 10. Movable groove; 11. Baffle; 12. First spring; 13. Clamping rod; 14. Clamping groove; 15. Handle; 16. Drive shaft; 17. Impeller; 18. Liquid outlet pipe; 19. Fixed seat; 20. Support rod; 21. Movable plate; 22. Vibration isolator; 23. Annular groove; 24. Second spring; 25. Rigid sealing ring; 26. Trapezoidal sealing ring. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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] See also Figures 1 to 4 As shown, the present invention provides a corrosion-resistant double-suction pump based on a desulfurization system, comprising a base 1, a pump body 2 and two end covers 3. The front of the pump body 2 is connected to a liquid inlet pipe 4, and the inner wall of the liquid inlet pipe 4 is movably connected with a filter screen 5, and the filter screen 5 is adapted to the shape of the inner wall of the liquid inlet pipe 4. The movable connection means that the two connecting structures are only in contact and can move. A sealing cover plate 6 is provided on the top of the liquid inlet pipe 4, and a groove adapted to the sealing cover plate 6 is opened on the top of the liquid inlet pipe 4, and a sealing gasket is provided at the connection between the sealing cover plate 6 and the liquid inlet pipe 4 to prevent liquid leakage, and the bottom of the sealing cover plate 6 is fixedly connected to the top of the filter screen 5, and the bottoms on both sides of the liquid inlet pipe 4 are fixedly connected to a limit plate 7, and the bottoms on both sides of the sealing cover plate 6 are fixedly connected to a vertical plate 8, the bottom of the vertical plate 8 passes through the limit plate 7 and extends to the bottom of the limit plate 7, and a limit assembly is provided on one side of the vertical plate 8 extending below the limit plate 7, for fixing the sealing cover plate 6 above the liquid inlet pipe 4;

[0031] The limiting assembly includes a rotating plate 9, which is provided with a movable groove 10 on the side of the rotating plate 9 away from the vertical plate 8, and a baffle 11 is slidably connected between the top and bottom of the inner wall of the movable groove 10, and the baffle 11 is used to prevent the first spring 12 from popping out of the movable groove 10, and a first spring 12 is fixedly connected between one side of the baffle 11 and one side of the inner wall of the movable groove 10. The elasticity of the first spring 12 makes the clamping rod 13 abut against the clamping groove 14, and the side of the baffle 11 away from the first spring 12 is fixedly connected with the clamping rod 13. The bottoms of both sides of the liquid inlet pipe 4 are provided with clamping grooves 14 adapted to the clamping rod 13, and one side of the rotating plate 9 is rotatably connected to the side extending from the vertical plate 8 to the bottom of the limiting plate 7. After the rotating plate 9 is rotated, its top is connected to the bottom of the limiting plate 7, and the top of the sealing cover plate 6 is fixedly connected with a handle 15;

[0032] The two end covers 3 are respectively fixed on both sides of the pump body 2, and a transmission shaft 16 is rotatably connected between the opposite sides of the inner walls of the two end covers 3. The surface of the transmission shaft 16 and the interior of the pump body 2 are fixedly connected with an impeller 17. The back of the pump body 2 is connected to a liquid outlet pipe 18. The impeller 17, the two end covers 3 and the pump body 2 are all made of high-strength stainless steel, which can resist the corrosion and wear of the liquid, thereby improving the wear resistance and corrosion resistance of the equipment. Combined with the setting of the filter screen 5, the desulfurization liquid can be transported. One end of the transmission shaft 16 passes through the end cover 3 and extends to the outside of the end cover 3.

[0033] Through the arrangement of the above structure, when in use, the desulfurization liquid enters the pump body 2 through the liquid inlet pipe 4, and the filter screen 5 filters impurities such as particulate matter in the desulfurization liquid. At the same time, the impeller 17 and the pump body 2 are made of materials with high corrosion resistance and wear resistance to resist the corrosion and wear of the liquid, so that the desulfurization liquid can be transported. By pinching the card rod 13, it is moved into the movable groove 10. The card rod 13 squeezes the first spring 12 and moves out of the card groove 14. Then, the rotating plate 9 is rotated downward by ninety degrees. After forming a straight line with the vertical plate 8, the handle 15 is pulled to drive the sealing cover plate 6 to move upward. The rotating plate 9 moves out of the limit plate 7, thereby pulling the filter screen 5 directly out of the liquid inlet pipe 4, which is convenient for cleaning the filter screen 5 to prevent it from being blocked.

[0034] Example 2

[0035] Based on Example 1, please refer to Figure 1 and Figure 6 As shown, the specific improvements are as follows: the bottom of the pump body 2 is fixedly connected to a fixed seat 19, the bottom of the fixed seat 19 passes through the base 1 and extends to the interior of the base 1, and the four corners between the bottom and the top of the inner wall of the base 1 are fixedly connected to support rods 20. The fixed seat 19 extends to one side of the interior of the base 1 and is fixedly connected to a movable plate 21. The four support rods 20 all pass through the movable plate 21 and extend to the outside of the movable plate 21. The movable plate 21 slides up and down on the four support rods 20, thereby squeezing the vibration isolator 22, and the vibration isolator 22 can buffer the impact force. The two sides of the bottom of the inner wall of the base 1 are fixedly connected with vibration isolators 22. The vibration isolator 22 is an elastic element connecting the equipment and the foundation, which is used to reduce and eliminate the vibration force transmitted from the equipment to the foundation and the vibration transmitted from the foundation to the equipment, and the top of the vibration isolator 22 is fixedly connected to the bottom of the movable plate 21.

[0036] Through the arrangement of the above structure, when the double-suction pump is in operation, the vibration generated drives the fixed seat 19 to slide up and down on the support rod 20, causing squeezing of the vibration isolator 22. The double-suction pump is buffered and noise-reduced by the vibration isolator 22, thereby reducing the impact of noise and vibration on the surrounding environment.

[0037] Example 3

[0038] In conjunction with Example 1 and Example 2, please refer to Figure 2 and Figure 5As shown, the specific improvements are as follows: an annular groove 23 is provided on one side of the inner wall of the two end covers 3, and the inner wall of the annular groove 23 is fixedly connected to the second spring 24, and a plurality of second springs 24 are provided, which are evenly distributed in an annular shape on the inner wall of the annular groove 23, and a rigid sealing ring 25 is slidingly provided between the two sides of the inner wall of the annular groove 23. The rigid sealing ring 25 cooperates with the trapezoidal sealing ring 26 to improve the durability of the sealing assembly, and the surface of the rigid sealing ring 25 is fixedly connected to one end of the second spring 24, and the side of the rigid sealing ring 25 away from the second spring 24 is fixedly connected to the trapezoidal sealing ring 26, which is made of rubber material.

[0039] Through the arrangement of the above structure, a trapezoidal sealing ring 26 is provided between the two end covers 3 and the pump body 2, which is used to seal the impeller 17 chamber. Under the elastic action of the second spring 24, the rigid sealing ring 25 is driven to squeeze the trapezoidal sealing ring 26, so that the trapezoidal sealing ring 26 and the transmission shaft 16 fit more closely, improving the sealing performance. At the same time, the second spring 24 can also compensate for the continuous loss of elasticity of the trapezoidal sealing ring 26 and extend its service life.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0041] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant double-suction pump based on a desulfurization system, comprising a base (1), a pump body (2) and two end covers (3), characterized in that: The front of the pump body (2) is connected to a liquid inlet pipe (4), and the inner wall of the liquid inlet pipe (4) is movably connected to a filter screen (5), a sealing cover plate (6) is provided on the top of the liquid inlet pipe (4), and the bottom of the sealing cover plate (6) is fixedly connected to the top of the filter screen (5), the bottoms of both sides of the liquid inlet pipe (4) are fixedly connected to the limit plates (7), the bottoms of both sides of the sealing cover plate (6) are fixedly connected to the vertical plates (8), the bottoms of the vertical plates (8) pass through the limit plates (7) and extend to the bottom of the limit plates (7), and a limit assembly is provided on one side of the vertical plate (8) extending to the bottom of the limit plates (7) for fixing the sealing cover plate (6) above the liquid inlet pipe (4); The limiting assembly includes a rotating plate (9), a movable groove (10) is provided on a side of the rotating plate (9) away from the vertical plate (8), and a baffle (11) is slidably connected between the top and bottom of the inner wall of the movable groove (10), a first spring (12) is fixedly connected between one side of the baffle (11) and one side of the inner wall of the movable groove (10), a clamping rod (13) is fixedly connected to the side of the baffle (11) away from the first spring (12), and a clamping groove (14) adapted to the clamping rod (13) is provided at the bottom of both sides of the liquid inlet pipe (4).

2. The corrosion-resistant double-suction pump based on the desulfurization system according to claim 1, characterized in that: One side of the rotating plate (9) is rotatably connected to the side of the vertical plate (8) extending below the limit plate (7), and a handle (15) is fixedly connected to the top of the sealing cover plate (6).

3. The corrosion-resistant double-suction pump based on the desulfurization system according to claim 1, characterized in that: The two end covers (3) are respectively fixed on both sides of the pump body (2); a transmission shaft (16) is rotatably connected between opposite sides of the inner walls of the two end covers (3); an impeller (17) is fixedly connected to the surface of the transmission shaft (16) and located inside the pump body (2); and a liquid outlet pipe (18) is connected to the back side of the pump body (2).

4. The corrosion-resistant double-suction pump based on the desulfurization system according to claim 3, characterized in that: The impeller (17), the two end covers (3) and the pump body (2) are all made of high-strength stainless steel, and one end of the transmission shaft (16) passes through the end cover (3) and extends to the outside of the end cover (3).

5. The corrosion-resistant double-suction pump based on the desulfurization system according to claim 1, characterized in that: The bottom of the pump body (2) is fixedly connected to a fixing seat (19), the bottom of the fixing seat (19) passes through the base (1) and extends to the inside of the base (1), the four corners between the bottom and the top of the inner wall of the base (1) are fixedly connected to support rods (20), and one side of the fixing seat (19) extending to the inside of the base (1) is fixedly connected to a movable plate (21), and the four support rods (20) all pass through the movable plate (21) and extend to the outside of the movable plate (21).

6. The corrosion-resistant double-suction pump based on the desulfurization system according to claim 5, characterized in that: Vibration isolators (22) are fixedly connected to both sides of the bottom of the inner wall of the base (1), and the top of the vibration isolator (22) is fixedly connected to the bottom of the movable plate (21).

7. The corrosion-resistant double-suction pump based on the desulfurization system according to claim 1, characterized in that: An annular groove (23) is provided on one side of the inner wall of each of the two end covers (3), and a second spring (24) is fixedly connected to the inner wall of the annular groove (23), a rigid sealing ring (25) is slidably provided between the two sides of the inner wall of the annular groove (23), and the surface of the rigid sealing ring (25) is fixedly connected to one end of the second spring (24), and a trapezoidal sealing ring (26) is fixedly connected to the side of the rigid sealing ring (25) away from the second spring (24).

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