Novel diffuser for mine sewage pump

Abstract

The utility model relates to the field of sewage pumps, in particular to a novel diffuser for a mine sewage pump, which comprises a bearing plate. A sewage pump body is fixedly connected to the upper end of the bearing plate, a first vertical pipe is fixedly connected to the upper end of the water outlet end of the sewage pump body, and a reinforcing mechanism for reinforcing the first vertical pipe is arranged on the bearing plate. Intelligent adjustment of the sectional area of the flow channel is achieved through the dynamic regulation and control mechanism that the electric cylinder drives the lifting pipe, the matching relation between the third through hole and the first through hole and the matching relation between the third through hole and the second through hole, when the solid content of water flow is high, the lifting pipe moves downwards to close the second through hole and open the first through hole, the sectional area of the flow channel is increased, and blocking is prevented; when the solid content is low, the lifting pipe is moved upwards to seal the first through hole, flow is accurately controlled through the second through hole, meanwhile, a rotational flow channel formed by the spiral pipe and the inner threaded barrel can guide impurity particles to be centrifugally settled, and the risk of flow channel blockage can be remarkably reduced by combining the circulating washing effect of the U-shaped water return pipe.

Description

Technical Field

[0001] The utility model belongs to the field of sewage pumps, and in particular relates to a novel diffuser for a mine sewage pump. Background Art

[0002] In the overall structure of the sewage pump, the upper diffuser is usually located in the upper area of ​​the sewage pump, which is generally above the sewage pump impeller or near the water outlet. One of its main functions is to effectively convert the kinetic energy of the high-speed flowing sewage at the sewage pump impeller outlet into pressure energy. When the sewage is thrown out from the impeller at high speed, it has a high speed but relatively low pressure. Through the special structure of the upper diffuser, the water flow speed gradually decreases, while the pressure gradually increases, thereby realizing the conversion of energy forms, so that the sewage can be transported to a higher position or a farther distance under a certain pressure.

[0003] The shape of the upper diffuser is usually similar to a trumpet or a gradually expanding shape, and common shapes include cone and spiral. However, the sewage transported by the mine sewage pump often contains various impurities and solid particles, and the water flow state is relatively disordered. The upper diffuser in the existing technology is difficult to rectify the high-speed and turbulent water flow discharged from the impeller, and cannot make the water flow more evenly and stably, and it is difficult to improve the protection of the pump casing and the pipeline.

[0004] Therefore, a new diffuser for mine sewage pump is proposed, which can rectify the high-speed and turbulent water flow discharged from the impeller, make the water flow more evenly and stably, and improve the protection of the pump casing and pipeline. Utility Model Content

[0005] In order to overcome the problems that the upper diffuser in the prior art is difficult to rectify the high-speed and turbulent water flow discharged from the impeller, cannot make the water flow more evenly and stably, and is difficult to improve the protection of the pump casing and pipeline, a new diffuser for mine sewage pumps is proposed.

[0006] The technical scheme of the utility model is as follows: a novel diffuser for a mine sewage pump comprises a bearing plate; a sewage pump body is fixedly connected to the upper end of the bearing plate, a first riser is fixedly connected to the upper end of the water outlet of the sewage pump body, a reinforcing mechanism for reinforcing the first riser is provided on the bearing plate, a first diffuser is fixedly connected to the upper end of the first riser, a second riser is fixedly connected to the upper end of the first diffuser, a diffusion shell is fixedly connected to the upper end of the second riser, a second diffuser is fixedly connected to the upper end of the diffusion shell, a top plate is fixedly connected to the upper end of the second diffuser, an electric The lower end of the output shaft of the electric cylinder passes through the top plate and is fixedly connected to a connecting block, the side end of the connecting block is fixedly connected to a lifting tube, the upper and lower ends of the inner wall of the first diffuser are commonly fixedly connected to a center tube, the upper end of the center tube and the lower end of the second vertical tube are interconnected, the lower end of the center tube and the upper end of the first vertical tube are interconnected, the side wall of the center tube is penetrated by a first through hole and a second through hole, the lower part of the side wall of the lifting tube is penetrated by a third through hole, and the third through hole corresponds to the first through hole; when the lifting tube moves upward, the lower part of the side wall of the lifting tube will block the first through hole.

[0007] Preferably, one end of a fixed tube is fixedly connected to the side wall of the first diffuser in a penetrating manner, the other end of the fixed tube is fixedly connected to a spiral tube, and both ends of the spiral tube are fixedly connected to internal threaded tubes.

[0008] Preferably, two water outlet pipes are provided through the side wall of the diffusion shell, the two water outlet pipes are symmetrical with respect to the center of the diffusion shell, and the interior of the water outlet pipes is interconnected with the interior of the diffusion shell.

[0009] Preferably, two return pipes are fixedly connected to the side wall of the diffuser shell through the return pipes, the return pipes are U-shaped, the interior of the return pipes and the interior of the diffuser shell are interconnected, and the two return pipes are symmetrical with respect to the center of the diffuser shell.

[0010] Preferably, the reinforcement mechanism includes an H-shaped block, a vertical block and a bolt; two vertical blocks are fixedly connected to the upper end of the bearing plate, and the two vertical blocks are symmetrical with respect to the sewage pump body; an H-shaped block is fixedly connected to the side wall of the first vertical pipe, and the top surface of the H-shaped block is H-shaped, and the side wall of the vertical block is adapted to the recess of the H-shaped block; a bolt is threadedly installed on one side of the H-shaped block, and the bolt is threadedly installed in the wall layer of the H-shaped block and the vertical block at the same time.

[0011] Preferably, the outer diameter of the lift pipe is equal to the inner diameter of the second riser, and the inner diameter of the second riser is equal to the inner diameter of the central pipe.

[0012] Preferably, when the lifting tube moves downward, the lower part of the side wall of the lifting tube will block the second through hole, and at this time, the third through hole is blocked by the wall layer between the first through hole and the second through hole.

[0013] Beneficial effects of the utility model:

[0014] 1. By setting up a three-stage gradually expanding flow channel formed by the first diffuser, the diffuser shell and the second diffuser, and cooperating with the dynamic adjustment of the central tube and the lifting tube, the high-speed turbulent water flow can be converted into step-by-step kinetic energy-pressure energy. After the water flow is initially decelerated by the first diffuser, the symmetrical outlet pipe and return pipe structure of the diffuser shell can guide the water flow for secondary rectification, and finally complete the pressure stable output through the second diffuser, which effectively solves the problem of insufficient rectification of the traditional single-stage diffuser;

[0015] 2. A dynamic control mechanism of the lifting tube driven by an electric cylinder is adopted, and intelligent adjustment of the cross-sectional area of ​​the flow channel is realized through the matching relationship between the third through hole and the first through hole, and between the third through hole and the second through hole. When the solid content of the water flow is high, the lifting tube moves down to close the second through hole and open the first through hole, thereby increasing the cross-sectional area of ​​the flow channel to prevent blockage. When the solid content is low, the lifting tube moves up to close the first through hole, and the flow is accurately controlled through the second through hole. At the same time, the vortex channel formed by the spiral tube and the internal threaded tube can guide the centrifugal sedimentation of impurity particles. Combined with the circulating flushing effect of the U-shaped return water pipe, the risk of flow channel blockage can be significantly reduced, which solves the problem that the upper diffuser in the prior art is difficult to rectify the high-speed and turbulent water flow discharged from the impeller, and the water flow cannot flow more evenly and stably, and it is difficult to improve the protection of the pump casing and the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 What is shown is a three-dimensional structural schematic diagram of a new type of diffuser for a mine sewage pump of the utility model;

[0017] Figure 2 Shown is a three-dimensional structural schematic diagram of a diffusion shell of a new type of diffuser for a mine sewage pump of the utility model;

[0018] Figure 3 What is shown is a three-dimensional structural schematic diagram of a reinforcement mechanism of a novel diffuser for a mine sewage pump of the utility model;

[0019] Figure 4 What is shown is a three-dimensional cross-sectional structure schematic diagram of a new type of diffuser for a mine sewage pump of the utility model;

[0020] Figure 5 What is shown is a three-dimensional structural schematic diagram of a spiral tube of a new type of diffuser for a mine sewage pump of the utility model.

[0021] The markings in the attached drawings are: 1. bearing plate; 2. sewage pump body; 3. first riser; 31. H-shaped block; 32. riser block; 33. bolt; 4. first diffuser; 5. second riser; 6. diffuser shell; 7. second diffuser; 8. top plate; 9. electric cylinder; 10. fixed pipe; 11. spiral pipe; 12. outlet pipe; 13. return pipe; 14. center pipe; 15. first through hole; 16. second through hole; 17. connecting block; 18. lifting pipe; 19. third through hole; 20. internal threaded cylinder. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Example 1: Please refer to Figure 1-Figure 5 A novel diffuser for a mine sewage pump includes a bearing plate 1; a sewage pump body 2 is fixedly connected to the upper end of the bearing plate 1; a first riser 3 is fixedly connected to the upper end of the water outlet of the sewage pump body 2; a reinforcing mechanism for reinforcing the first riser 3 is provided on the bearing plate 1; a first diffuser 4 is fixedly connected to the upper end of the first riser 3; a second riser 5 is fixedly connected to the upper end of the first diffuser 4; a diffuser shell 6 is fixedly connected to the upper end of the second riser 5; a second diffuser 7 is fixedly connected to the upper end of the diffuser shell 6; a top plate 8 is fixedly connected to the upper end of the top plate 8; an electric cylinder 9 is fixedly connected to the lower end of the output shaft of the electric cylinder 9; A connecting block 17 is passed through the top plate 8 and fixedly connected, a lifting pipe 18 is fixedly connected to the side end of the connecting block 17, a center pipe 14 is fixedly connected to the upper and lower ends of the inner wall of the first diffuser 4, an upper end of the center pipe 14 and a lower end of the second vertical pipe 5 are interconnected, a lower end of the center pipe 14 and an upper end of the first vertical pipe 3 are interconnected, a first through hole 15 and a second through hole 16 are penetrated through the side wall of the center pipe 14, a third through hole 19 is penetrated through the lower part of the side wall of the lifting pipe 18, and the third through hole 19 corresponds to the first through hole 15; when the lifting pipe 18 moves upward, the lower part of the side wall of the lifting pipe 18 will block the first through hole 15.

[0024] When it is necessary to adjust the water flow direction in the first diffuser 4, the electric cylinder 9 is turned on to make the output shaft of the electric cylinder 9 move upward, so that the connecting block 17 drives the lifting pipe 18 to move upward, and the lower part of the side wall of the lifting pipe 18 will block the first through hole 15. At this time, the water at the first riser 3 will flow into the first diffuser 4 through the second through hole 16 and then flow out through the fixed pipe 10 and the spiral pipe 11. When it is necessary to realize secondary diffusion of water, the electric cylinder 9 is turned on to make the connecting block 17 move downward, and the lifting pipe 18 moves downward. The first through hole 15 and the third through hole 19 correspond to each other. The water in the first riser 3 flows into the first diffuser 4 through the second through hole 16, and a part of the water will flow into the lifting pipe 18 through the first through hole 15 and the third through hole 19, and then flow into the second diffuser 7 through the lifting pipe 18, and then flow out through the two outlet pipes 12. The interior of the second diffuser 7 and the diffusion shell 6 are interconnected, and part of the water in the diffusion shell 6 and the second diffuser 7 will flow in the return pipe 13 to reduce the impact force of the water.

[0025] See also Figure 1 and Figure 5 In this embodiment, one end of a fixed tube 10 is fixedly connected to the side wall of the first diffuser 4, and the other end of the fixed tube 10 is fixedly connected to a spiral tube 11. Both ends of the spiral tube 11 are fixedly connected to an internal threaded tube 20. The spiral structure of the spiral tube 11 can absorb pipeline vibration, reduce stress concentration caused by fluid pulsation, and enhance system stability. The design of the internal threaded tube 20 facilitates quick connection to external pipelines.

[0026] See also Figure 1 and Figure 2 In this embodiment, two water outlet pipes 12 are provided through the side wall of the diffuser shell 6. The two water outlet pipes 12 are symmetrical with respect to the center of the diffuser shell 6. The interior of the water outlet pipes 12 is interconnected with the interior of the diffuser shell 6. The symmetrically distributed water outlet pipes 12 ensure uniform flow of the fluid, reduce wear caused by excessive local pressure, and improve the balance of the water outlet.

[0027] See also Figure 1 and Figure 2 In this embodiment, two return pipes 13 are fixedly connected to the side wall of the diffuser shell 6. The return pipes 13 are U-shaped. The interior of the return pipe 13 is interconnected with the interior of the diffuser shell 6. The two return pipes 13 are symmetrical with respect to the center of the diffuser shell 6. The U-shaped return pipe 13 can guide part of the fluid to flow back to the diffuser shell 6 to form a local circulation and balance the internal and external pressure difference. The symmetrically arranged return pipes 13 further optimize the fluid distribution and reduce turbulent noise.

[0028] See also Figure 1 and Figure 4In this embodiment, the outer diameter of the lifting tube 18 is equal to the inner diameter of the second riser 5, and the inner diameters of the second riser 5 and the center tube 14 are equal, which is conducive to the stable movement of the lifting tube 18 in the vertical direction.

[0029] See also Figure 1 and Figure 4 In this embodiment, when the lifting tube 18 moves downward, the lower part of the side wall of the lifting tube 18 will block the second through hole 16. At this time, the third through hole 19 is blocked by the wall layer between the first through hole 15 and the second through hole 16. The direction of the water flow is controlled by the displacement of the lifting tube 18. At the same time, based on the relative position change of the third through hole 19 and the first through hole 15, the flow rate of the water in the first diffuser 4 flowing into the lifting tube 18 can be quickly adjusted.

[0030] Example 2: Please refer to Figure 3 On the basis of Example 1, the present application provides a technical solution: the reinforcement mechanism includes an H-shaped block 31, a vertical block 32 and a bolt 33; two vertical blocks 32 are fixedly connected to the upper end of the bearing plate 1, and the two vertical blocks 32 are symmetrical with respect to the sewage pump body 2; the side wall of the first vertical pipe 3 is fixedly connected to the H-shaped block 31, the top surface of the H-shaped block 31 is H-shaped, the side wall of the vertical block 32 is adapted to the recess of the H-shaped block 31, and a bolt 33 is threadedly installed on one side of the H-shaped block 31, and the bolt 33 is threadedly installed in the wall layer of the H-shaped block 31 and the vertical block 32 at the same time, and the H-shaped block 31 and the vertical block 32 are locked by the bolt 33, thereby improving the reinforcement of the first vertical pipe 3.

[0031] Working principle: When in use, the water output by the sewage pump body 2 enters the first diffuser 4 through the first riser 3, enters the second riser 5 through the first diffuser 4, and then enters the diffuser shell 6 through the second riser 5, and enters the second diffuser 7 through the diffuser shell 6. Part of the water enters the spiral tube 11 through the fixed tube 10 and flows out from both ends of the spiral tube 11. When it is necessary to adjust the water flow direction in the first diffuser 4, the electric cylinder 9 is turned on to make the output shaft of the electric cylinder 9 move upward, so that the connecting block 17 drives the lifting tube 18 to move upward, and the lower part of the side wall of the lifting tube 18 will block the first through hole 15. At this time, the water at the first riser 3 will flow into the first diffuser 4 through the second through hole 16 and then flow out through the fixed tube 10 and the spiral tube 11. When it is necessary to realize the two When diffusing the water for the first time, the electric cylinder 9 is turned on to move the connecting block 17 downward, the lifting pipe 18 moves downward, the first through hole 15 and the third through hole 19 correspond to each other, and the water in the first riser 3 flows into the first diffuser 4 through the second through hole 16, and a part of the water flows into the lifting pipe 18 through the first through hole 15 and the third through hole 19, and then flows into the second diffuser 7 through the lifting pipe 18, and then flows out through the two outlet pipes 12. The interiors of the second diffuser 7 and the diffusion shell 6 are interconnected, and part of the water in the diffusion shell 6 and the second diffuser 7 will flow in the return pipe 13 to reduce the impact force of the water. In addition, by adjusting the relative position of the third through hole 19 and the first through hole 15, the water flow rate of the water in the first diffuser 4 flowing into the lifting pipe 18 can be quickly adjusted.

[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A novel diffuser for a mine sewage pump, comprising a bearing plate (1); characterized in that: The upper end of the bearing plate (1) is fixedly connected to a sewage pump body (2), the upper end of the water outlet end of the sewage pump body (2) is fixedly connected to a first vertical pipe (3), the bearing plate (1) is provided with a reinforcement mechanism for reinforcing the first vertical pipe (3), the upper end of the first vertical pipe (3) is fixedly connected to a first diffuser (4), the upper end of the first diffuser (4) is fixedly connected to a second vertical pipe (5), the upper end of the second vertical pipe (5) is fixedly connected to a diffuser shell (6), the upper end of the diffuser shell (6) is fixedly connected to a second diffuser (7), the upper end of the second diffuser (7) is fixedly connected to a top plate (8), the upper end of the top plate (8) is fixedly connected to an electric cylinder (9), the lower end of an output shaft of the electric cylinder (9) passes through the top plate (8) and is fixedly connected to a connecting rod (1). A block (17) is connected to a side end of the connecting block (17) with a lifting tube (18), the upper and lower ends of the inner wall of the first diffuser (4) are fixedly connected to a central tube (14), the upper end of the central tube (14) and the lower end of the second vertical tube (5) are interconnected, the lower end of the central tube (14) and the upper end of the first vertical tube (3) are interconnected, the side wall of the central tube (14) is provided with a first through hole (15) and a second through hole (16), the lower part of the side wall of the lifting tube (18) is provided with a third through hole (19), and the third through hole (19) corresponds to the first through hole (15); when the lifting tube (18) moves upward, the lower part of the side wall of the lifting tube (18) blocks the first through hole (15).

2. The novel diffuser for mine sewage pump according to claim 1 is characterized in that: One end of a fixed tube (10) is fixedly connected to the side wall of the first diffuser (4) in a penetrating manner, the other end of the fixed tube (10) is fixedly connected to a spiral tube (11), and both ends of the spiral tube (11) are fixedly connected to an internal threaded tube (20).

3. The novel diffuser for mine sewage pump according to claim 1 is characterized by: Two water outlet pipes (12) are provided through the side wall of the diffusion shell (6); the two water outlet pipes (12) are symmetrical with respect to the center of the diffusion shell (6); and the interior of the water outlet pipes (12) and the interior of the diffusion shell (6) are interconnected.

4. The novel diffuser for a mine sewage pump according to claim 1 is characterized in that: Two water return pipes (13) are fixedly connected to the side wall of the diffuser shell (6) through the water return pipes (13). The water return pipes (13) are U-shaped. The interior of the water return pipes (13) and the interior of the diffuser shell (6) are interconnected. The two water return pipes (13) are symmetrical with respect to the center of the diffuser shell (6).

5. The novel diffuser for mine sewage pump according to claim 1 is characterized in that: The reinforcement mechanism comprises an H-shaped block (31), a vertical block (32) and a bolt (33); the upper end of the bearing plate (1) is fixedly connected to the two vertical blocks (32), the two vertical blocks (32) are symmetrical with respect to the sewage pump body (2), the side wall of the first vertical pipe (3) is fixedly connected to the H-shaped block (31), the top surface of the H-shaped block (31) is H-shaped, the side wall of the vertical block (32) is matched with the concave part of the H-shaped block (31), one side of the H-shaped block (31) is threadedly installed with a bolt (33), and the bolt (33) is threadedly installed in the wall layer of the H-shaped block (31) and the vertical block (32) at the same time.

6. The novel diffuser for a mine sewage pump according to claim 1 is characterized in that: The outer diameter of the lifting pipe (18) is equal to the inner diameter of the second riser (5), and the inner diameters of the second riser (5) and the central pipe (14) are equal.

7. The novel diffuser for a mine sewage pump according to claim 1 is characterized in that: When the lifting tube (18) moves downward, the lower part of the side wall of the lifting tube (18) blocks the second through hole (16), and at this time, the third through hole (19) is blocked by the wall layer between the first through hole (15) and the second through hole (16).

Images