Double tube submerged slag slurry pump

Abstract

The utility model discloses a double -tube liquid under the slag slurry pump, including the pump body, still including the feeding mechanism, feeding mechanism: it includes the feeding channel, the upper narrow channel, the lower wide channel, the upper side spiral piece, the cutting groove, the lower side spiral piece, the avoidance mouth, the feeding channel fixed connection on the upper surface of pump body, the inside upper side of feeding channel is the upper narrow channel, the inside lower side of feeding channel is the lower wide channel, and the inside rotatable connection of upper narrow channel has the upper side spiral piece, and the spiral surface of upper side spiral piece is provided with the cutting groove that distributes evenly, and the inside rotatable connection of lower wide channel has the lower side spiral piece, and the spiral surface of lower side spiral piece is provided with the avoidance mouth that distributes evenly, and the lower end of upper side spiral piece is fixedly connected with the upper end of lower side spiral piece, and the lower side of lower side spiral piece is contacted with the upper surface of pump body, and this double -tube liquid under the slag slurry pump, conveying is smooth, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of slurry transportation technology, specifically a dual-pipe submersible slurry pump. Background Technology

[0002] The dual-pipe submersible slurry pump is a centrifugal pump specifically designed for conveying high-concentration slurry containing solid particles (such as slag, mud, coal ash, etc.). Its core feature is that it achieves submersible operation through a "dual-pipe" structure (usually referring to an inner pipe (drive shaft pipe) and an outer pipe (slurry conveying pipe)), which avoids slurry leakage and adapts to harsh working conditions.

[0003] The prior art proposes a HYL series submersible slurry pump, which is a vertical single-stage single-suction cantilever centrifugal pump with a semi-open impeller. Agitator blades are provided at the extension of the impeller suction side. When the slurry enters the impeller, it is first agitated and then discharged into the impeller for pressurization.

[0004] The above-mentioned slurry pump has some minor problems in actual use. For example, slurry agitation may cause discontinuous feeding at the feed point, and when the agitator rod stirs the hard blocks, the hard blocks may rub against the inner wall of the pump body, reducing the service life of the slurry pump. To address this, we propose a dual-pipe submersible slurry pump. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a dual-pipe submersible slurry pump that delivers slurry smoothly and has a long service life, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-pipe submersible slurry pump, including a pump body and a feeding mechanism;

[0007] Feeding mechanism: It includes a feeding channel, an upper narrow channel, a lower wide channel, an upper spiral blade, a cutting groove, a lower spiral blade, and a clearance opening. The feeding channel is fixedly connected to the upper surface of the pump body. The upper side of the feeding channel is the upper narrow channel, and the lower side of the feeding channel is the lower wide channel. The upper spiral blade is rotatably connected inside the upper narrow channel. The spiral surface of the upper spiral blade has evenly distributed cutting grooves. The lower spiral blade is rotatably connected inside the lower wide channel. The spiral surface of the lower spiral blade has evenly distributed clearance openings. The lower end of the upper spiral blade is fixedly connected to the upper end of the lower spiral blade. The lower side of the lower spiral blade is in contact with the upper surface of the pump body, ensuring smooth conveying and a long service life.

[0008] Furthermore, a feed pipe is fixedly connected to the upper end of the feed channel to realize the feeding function.

[0009] Furthermore, a discharge pipe is provided on the left side of the pump body, and mounting flanges are provided at the upper ends of both the inlet pipe and the discharge pipe to enable the installation of the pump body.

[0010] Furthermore, a bottom support frame is fixedly connected to the lower surface of the pump body to support the pump body from the bottom.

[0011] Furthermore, the pump body is internally connected to an impeller, which enables the pressurization of the slurry.

[0012] Furthermore, a transmission rod is rotatably connected to the middle of the lower side wall of the pump body. The middle of the transmission rod is rotatably connected to the middle of the upper side wall of the pump body. The lower side of the outer arc surface of the transmission rod is fixedly connected to the middle of the impeller. The middle of the upper spiral blade and the middle of the lower spiral blade are both fixedly connected to the outer arc surface of a transmission rod, thereby realizing the driving function.

[0013] Furthermore, a feed inlet is provided on the right side of the upper side wall of the pump body to enable the slurry to enter the pump body.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This dual-pipe submersible slurry pump has the following advantages:

[0015] The pump employs a three-channel conveying system, with the upper narrow channel and the lower wide channel each equipped with spiral blades of different shapes. When the slurry passes through the upper narrow channel, the cutting grooves on the upper spiral blades break up any agglomerated lumps within the slurry. When the slurry fills the lower wide channel, the clearance openings on the surface of the lower spiral blades reduce excessive friction between the hard lumps in the slurry and the inner wall of the pipe, ensuring that the pump body is not subjected to excessive friction, resulting in smooth conveying and a longer service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the feeding mechanism of this utility model;

[0018] Figure 3 This is a cross-sectional structural schematic diagram of the pump body of this utility model;

[0019] Figure 4 This is a cross-sectional front view of the pump body of this utility model.

[0020] In the diagram: 1 Pump body, 2 Feeding mechanism, 21 Feeding channel, 22 Upper narrow channel, 23 Lower wide channel, 24 Upper spiral blade, 25 Cutting groove, 26 Lower spiral blade, 27 Clearance opening, 3 Feeding pipe, 4 Feeding port, 5 Bottom support frame, 6 Transmission rod, 7 Impeller, 8 Discharge pipe, 9 Mounting flange. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This embodiment provides a technical solution: a dual-pipe submersible slurry pump, including a pump body 1, a bottom support frame 5 fixedly connected to the lower surface of the pump body 1, an impeller 7 rotatably connected inside the pump body 1, a feed inlet 4 opened on the right side of the upper side wall of the pump body 1, and a feeding mechanism 2.

[0023] Feeding mechanism 2 includes a feeding channel 21, an upper narrow channel 22, a lower wide channel 23, an upper spiral blade 24, a cutting groove 25, a lower spiral blade 26, and a clearance opening 27. The feeding channel 21 is fixedly connected to the upper surface of the pump body 1. The upper side of the feeding channel 21 is the upper narrow channel 22, and the lower side of the feeding channel 21 is the lower wide channel 23. The upper spiral blade 24 is rotatably connected inside the upper narrow channel 22. The spiral surface of the upper spiral blade 24 has evenly distributed cutting grooves 25. The lower spiral blade 26 is rotatably connected inside the lower wide channel 23. The spiral surface of the lower spiral blade 26 has evenly distributed clearance openings 27. The lower end of the upper spiral blade 24 is connected to the lower spiral blade 26. The upper end of the blade 26 is fixedly connected, and the lower side of the lower spiral blade 26 contacts the upper surface of the pump body 1. The upper end of the feed channel 21 is fixedly connected to the feed pipe 3. The left side of the pump body 1 is provided with a discharge pipe 8. The upper ends of the feed pipe 3 and the upper ends of the discharge pipe 8 are both provided with mounting flanges 9. The middle of the lower side wall of the pump body 1 is rotatably connected to the transmission rod 6. The middle part of the transmission rod 6 is rotatably connected to the middle part of the upper side wall of the pump body 1. The lower side of the outer arc surface of the transmission rod 6 is fixedly connected to the middle part of the impeller 7. The middle parts of the upper spiral blade 24 and the middle parts of the lower spiral blade 26 are both fixedly connected to the outer arc surface of one of the transmission rods 6. When the dual-pipe submersible slurry pump is needed, the motor can be installed on the mounting flange 9 on the feed pipe 3. The motor's output shaft is fixedly connected to the upper end of the transmission rod 6, and then connected to the external feeding equipment via a flange. At this point, the motor can be controlled to operate, and the motor's output shaft rotates at high speed, thereby driving the transmission rod 6 to rotate. During this process, the upper spiral blade 24 and the lower spiral blade 26 rotate around the central axis of the transmission rod 6, and simultaneously drive the impeller 7 to rotate around the central axis of the transmission rod 6. Meanwhile, the external feeding equipment discharges the slurry into the feed pipe 3, and then downwards into the upper narrow channel 22. The rotating upper spiral blade 24 conveys the slurry downwards, and during this process, the cutting groove 25 longitudinally breaks up any solidifications in the slurry. The slurry is fed into the lower wide channel 23 along the spiral direction of the upper spiral blade 24 and then discharged into the lower wide channel 23 along the lower spiral blade 26. At this time, the slurry will gradually fill the lower wide channel 23. During this period, the clearance port 27 will accommodate some of the hard blocks to prevent the hard blocks from excessively rubbing against the inner wall of the channel and squeezed into the pump body 1 from the feed port 4. When the impeller 7 rotates, the slurry between the blades is thrown to the edge of the impeller 7 under the action of centrifugal force. The slurry thrown to the edge of the impeller gradually expands the cross-sectional area of ​​the "volute-shaped flow channel" of the impeller 7 and the pump body 1, and the kinetic energy is converted into pressure energy and the pressure increases, eventually forming a high-pressure slurry flow. The high-pressure slurry flow is finally discharged from the discharge pipe 8 on the left side as the impeller 7 continues to rotate.

[0024] The working principle of the dual-pipe submersible slurry pump provided by this utility model is as follows: When the dual-pipe submersible slurry pump is needed, the motor can be installed on the mounting flange 9 on the feed pipe 3, and the output shaft of the motor can be fixedly connected to the upper end of the transmission rod 6. The pump is then connected to an external feeding device via the flange. At this time, the motor can be controlled to run, and the output shaft of the motor rotates at high speed, thereby driving the transmission rod 6 to rotate. During this period, the upper spiral blade 24 and the lower spiral blade 26 can rotate around the central axis of the transmission rod 6, and the impeller 7 can also rotate around the central axis of the transmission rod 6. At this time, the external feeding device discharges the slurry into the feed pipe 3, and then downwards into the upper narrow channel 22. The rotating upper spiral blade 24 then pumps the slurry... The liquid is conveyed downwards, and during this process, the cutting groove 25 breaks up the coagulated blocks in the slurry longitudinally and moves downwards along the spiral direction of the upper spiral blade 24. Then, it is discharged into the interior of the lower wide channel 23 along with the lower spiral blade 26. At this time, the slurry gradually fills the lower wide channel 23. During this period, the clearance port 27 accommodates some of the hard blocks to prevent the hard blocks from excessively rubbing against the inner wall of the channel and squeezing into the interior of the pump body 1 from the feed port 4. When the impeller 7 rotates, the slurry between the blades is thrown to the edge of the impeller 7 under the action of centrifugal force. The slurry thrown to the edge of the impeller gradually expands the cross-sectional area of ​​the "volute-shaped flow channel" of the impeller 7 and the pump body 1, and the kinetic energy is converted into pressure energy and the pressure increases, eventually forming a high-pressure slurry flow. The high-pressure slurry flow is finally discharged from the discharge pipe 8 on the left side as the impeller 7 continues to rotate.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A double casing submersible slurry pump comprising a pump body (1) characterised in that: It also includes the feeding mechanism (2); Feeding mechanism (2): It includes a feeding channel (21), an upper narrow channel (22), a lower wide channel (23), an upper spiral blade (24), a cutting groove (25), a lower spiral blade (26), and a clearance opening (27). The feeding channel (21) is fixedly connected to the upper surface of the pump body (1). The upper side of the inside of the feeding channel (21) is the upper narrow channel (22), and the lower side of the inside of the feeding channel (21) is the lower wide channel (23). The inner side of the upper narrow channel (22) is the upper narrow channel (22). The upper spiral blade (24) is rotatably connected to the upper spiral blade (24). The spiral surface of the upper spiral blade (24) is provided with evenly distributed cutting grooves (25). The lower spiral blade (26) is rotatably connected to the inside of the lower wide channel (23). The spiral surface of the lower spiral blade (26) is provided with evenly distributed clearance openings (27). The lower end of the upper spiral blade (24) is fixedly connected to the upper end of the lower spiral blade (26). The lower side of the lower spiral blade (26) is in contact with the upper surface of the pump body (1).

2. A double casing submersible slurry pump as claimed in claim 1, wherein: The upper end of the feeding channel (21) is fixedly connected to the feeding pipe (3).

3. A double casing submersible slurry pump as claimed in claim 1, wherein: The pump body (1) is provided with a discharge pipe (8) on the left side, and both the upper end of the feed pipe (3) and the upper end of the discharge pipe (8) are provided with mounting flanges (9).

4. A dual-pipe submersible slurry pump according to claim 1, characterized in that: The pump body (1) is fixedly connected to a bottom support frame (5) on its lower surface.

5. A dual-pipe submersible slurry pump according to claim 1, characterized in that: An impeller (7) is rotatably connected inside the pump body (1).

6. A dual-pipe submersible slurry pump according to claim 5, characterized in that: A transmission rod (6) is rotatably connected to the middle of the lower side wall of the pump body (1). The middle of the transmission rod (6) is rotatably connected to the middle of the upper side wall of the pump body (1). The lower side of the outer arc surface of the transmission rod (6) is fixedly connected to the middle of the impeller (7). The middle of the upper spiral blade (24) and the middle of the lower spiral blade (26) are both fixedly connected to the outer arc surface of a transmission rod (6).

7. A dual-pipe submersible slurry pump according to claim 1, characterized in that: The pump body (1) has a feed inlet (4) on the right side of its upper side wall.

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