Impeller gland

Abstract

The utility model belongs to the technical field of flotation machine accessories, and particularly relates to an impeller gland which comprises a cover plate, a shaft hole used for being sleeved with a pump shaft is formed in the front side of the middle of the cover plate, a cavity used for being sleeved with an impeller is formed in the rear side of the middle of the cover plate, and the cavity is communicated with the shaft hole in a penetrating mode. The mounting hole is formed in the front end of the screw hole and connected with the protection mechanism, the cover plate can be fixed through the bolt when the cover plate is connected with the impeller, and then the protection mechanism can be inserted into the mounting hole so that the extrusion plate can make contact with the front end of the bolt. The elastic force of the spring is used for applying pressure to the extrusion plate to extrude the bolt, so that the situation that the bolt rotates due to the influence of flowing ore pulp and the cover plate falls off is avoided, and the front end of the bolt can be sealed through sleeving connection of the sealing cylinder and the mounting hole; therefore, it is avoided that slag carried in flowing ore pulp grinds the bolt, the bolt is abraded, and follow-up dismounting is difficult.

Description

Technical Field

[0001] The utility model belongs to the technical field of flotation machine accessories, and particularly relates to an impeller gland. Background Art

[0002] Foam flotation is the most important method for separating minerals. The flotation machine is the core equipment of the flotation process, and the impeller is the core component of the flotation machine. A complex physical and chemical process of gas, liquid, and solid phases is involved in the flotation machine. The impeller needs to establish a kinetic environment suitable for the collision and stable adhesion of useful mineral particles and bubbles in the flotation machine, so as to achieve the efficient separation and enrichment of useful mineral particles.

[0003] Most of the existing impeller covers of flotation machines are installed and fixed by bolt connection. After installation, no corresponding sealing protection and limit are carried out on the bolts, so that the bolt ends are directly exposed outside. When separating and screening the pulp, the flowing pulp will contact the cover, resulting in the contact between the slag particles in the pulp and the bolt ends to polish the bolt ends, thus affecting the subsequent disassembly of the bolts. And when the impeller rotates at high speed, it is easily driven by the flowing pulp to drive the bolts to rotate. In the long run, it is very easy for the bolts to fall off, resulting in the separation of the cover and the impeller. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an impeller gland which can carry out sealing protection on bolts and effectively improve the stability of bolt connection.

[0005] The technical solution adopted by the utility model is specifically as follows:

[0006] An impeller gland includes a cover plate. A shaft hole for sleeving a pump shaft is formed in the front side of the middle part of the cover plate. A cavity for sleeving an impeller is formed in the rear side of the middle part of the cover plate, and the cavity is in through communication with the shaft hole.

[0007] A plurality of mounting holes are formed in a surrounding manner on the front side of the cover plate. The rear ends of the plurality of mounting holes are in through communication with threaded holes formed in the rear side of the cover plate. The plurality of threaded holes are respectively threadedly connected with a plurality of bolts, and a protection mechanism is arranged in each of the plurality of mounting holes.

[0008] Each protection mechanism includes a sealing cylinder sleeved in the mounting hole. The front inner side surface of the sealing cylinder is fixedly connected with the front ends of a plurality of telescopic rods and a plurality of springs at the same time.

[0009] The rear ends of the plurality of telescopic rods and the plurality of springs are fixedly connected with the front end of a pressing plate. The plurality of springs are respectively sleeved on the plurality of telescopic rods. The rear end of the pressing plate abuts against the front end of the bolt. The front end of the sealing cylinder is fixedly connected with the rear end of a connecting cylinder.

[0010] The front end of the connecting cylinder is rotatably connected to the rear end of the fixed shaft through a rolling bearing. The front end of the fixed shaft is fixedly provided with a rotating shaft, and the outer side of the middle part of the fixed shaft is fixedly connected to one end of two limit blocks.

[0011] The other ends of the two limit blocks are respectively slidably connected in two limit slots. The two limit slots are both opened in the mounting hole and are both communicated with the two sliding slots.

[0012] The two sliding slots are both opened in the mounting hole. The two sliding slots are respectively slidably connected to the opposite ends of two sealing strips. The opposite ends of the two sealing strips are both fixedly connected to the outer side surface of the sealing cylinder.

[0013] The technical effects achieved by the present utility model are as follows:

[0014] In the present utility model, a mounting hole is opened at the front end of the screw hole and is connected to the protection mechanism. When connecting the cover plate and the impeller, the cover plate can be fixed by using bolts, and then the protection mechanism can be inserted into the mounting hole so that the pressing plate contacts the front end of the bolt. The spring force is used to apply pressure to the pressing plate to press the bolt to prevent the bolt from rotating under the influence of the flowing pulp, resulting in the cover plate falling off. Moreover, the front end of the bolt can also be sealed by the socket connection between the sealing cylinder and the mounting hole, thereby preventing the slag carried in the flowing pulp from grinding the bolt, causing bolt wear and subsequent difficulty in disassembly. Description of the Drawings

[0015] Figure 1 is the front view structural schematic diagram of the present utility model;

[0016] Figure 2 is the rear view structural schematic diagram of the present utility model;

[0017] Figure 3 is the structural schematic diagram of the mounting hole in the present utility model;

[0018] Figure 4 is the structural schematic diagram of the top view section of the protection mechanism in the present utility model.

[0019] In the drawings, the list of components represented by each reference numeral is as follows:

[0020] 1. Cover plate; 2. Shaft hole; 3. Protection mechanism; 31. Sealing cylinder; 32. Sealing strip; 33. Telescopic rod; 34. Spring; 35. Connecting cylinder; 36. Fixed shaft; 37. Limit block; 38. Rotating shaft; 39. Pressing plate; 4. Mounting hole; 5. Threaded hole; 6. Bolt; 7. Cavity; 8. Sliding slot; 9. Limit slot. Detailed Embodiment

[0021] In order to make the purpose and advantages of the present utility model clearer and more understandable, the present utility model will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present utility model, and does not strictly limit the scope of protection specifically claimed by the present utility model.

[0022] As Figures 1-3 shown, an impeller gland includes a cover plate 1. A shaft hole 2 for sleeving a pump shaft is provided at the front side of the middle part of the cover plate 1. A cavity 7 for sleeving an impeller is provided at the rear side of the middle part of the cover plate 1, and the cavity 7 is in through communication with the shaft hole 2.

[0023] Furthermore, a plurality of mounting holes 4 are circumferentially provided at the front side of the cover plate 1. The rear ends of the plurality of mounting holes 4 are in through communication with threaded holes 5 provided at the rear side of the cover plate 1. The plurality of threaded holes 5 are respectively threadedly connected with a plurality of bolts 6. A protection mechanism 3 is provided in each of the plurality of mounting holes 4.

[0024] Referring to the attached Figure 4 , each protection mechanism 3 includes a sealing cylinder 31. The sealing cylinder 31 is sleeved in the mounting hole 4. The front inner side surface of the sealing cylinder 31 is fixedly connected to the front ends of a plurality of telescopic rods 33 and a plurality of springs 34 at the same time. By providing the telescopic rods 33 and the springs 34, the pressing plate 39 is connected to the sealing cylinder 31. When the sealing cylinder 31 is pushed and the pressing plate 39 contacts the front end of the bolt 6, as the sealing cylinder 31 continues to move backward, the pressing plate 39 squeezes the springs 34 and the telescopic rods 33, so that the elastic force of the springs 34 exerts pressure on the pressing plate 39 and the limiting block 37, thereby preventing the bolt 6 from rotating under the influence of flowing pulp, resulting in the dropping of the cover plate 1, and also preventing the fixed shaft 36 and the rotating shaft 38 from rotating and driving the limiting block 37 to disengage from the limiting groove 9.

[0025] Furthermore, the rear ends of the plurality of telescopic rods 33 and the plurality of springs 34 are fixedly connected to the front end of the pressing plate 39. The plurality of springs 34 are respectively sleeved on the plurality of telescopic rods 33. The rear end of the pressing plate 39 abuts against the front end of the bolt 6. The front end of the sealing cylinder 31 is fixedly connected to the rear end of the connecting cylinder 35.

[0026] Furthermore, the front end of the connecting cylinder 35 is rotatably connected to the rear end of the fixed shaft 36 through a rolling bearing. The front end of the fixed shaft 36 is fixedly provided with a rotating shaft 38. One end of two limiting blocks 37 is fixedly connected to the outer side of the middle part of the fixed shaft 36.

[0027] Further, the other ends of the two limiting blocks 37 are respectively slidably connected in the two limiting grooves 9. The two limiting grooves 9 are both formed in the mounting hole 4 and are both in through communication with the two sliding grooves 8. By providing the limiting blocks 37 on the fixed shaft 36 and providing the limiting grooves 9 in the mounting hole 4 to sleeve the limiting blocks 37, the front-back displacement of the sealing cylinder 31 is restricted by the sleeving of the limiting blocks 37 and the limiting grooves 9, and then the sealing cylinder 31 is fixed in the mounting hole 4 to seal the front end of the bolt 6.

[0028] Further, the two sliding grooves 8 are both formed in the mounting hole 4. The two sliding grooves 8 are respectively slidably connected to the opposite ends of the two sealing strips 32. The opposite ends of the two sealing strips 32 are fixedly connected to the outer side surface of the sealing cylinder 31. Sealing rubber pads are provided in the mounting hole 4 and the sliding grooves 8 to be in close contact with the sealing cylinder 31 and the sealing strips 32, so as to improve the sealing and protection effect of the sealing cylinder 31 on the mounting hole 4 and the bolt 6.

[0029] The working principle of the present utility model is as follows: When installing the cover plate 1, the impeller is sleeved in the cavity 7, and the pump shaft is passed through the shaft hole 2 so that the cover plate 1 contacts the impeller, and the threaded hole 5 corresponds to the threaded hole on the impeller. At this time, the user connects the bolt 6 to the threaded hole 5 to install and fix the cover plate 1. When the front end of the bolt 6 contacts the rear end of the mounting hole 4, the rotation of the bolt 6 is stopped. At this time, the user takes the protection mechanism 3 and inserts the sealing cylinder 31 into the mounting hole 4, and makes the sealing strips 32 and the limiting blocks 37 both sleeve the sliding grooves 8. When the extrusion plate 39 contacts the front end of the bolt 6 when the sealing cylinder 31 is pushed backward, as the sealing cylinder 31 continues to move backward, the extrusion plate 39 squeezes the spring 34 and the telescopic rod 33 so that the elastic force of the spring 34 applies pressure to the extrusion plate 39. When the rear end of the sealing cylinder 31 contacts the rear end of the mounting hole 4, the pushing of the sealing cylinder 31 is stopped. At this time, the limiting block 37 corresponds to the limiting groove 9, and then the user rotates the rotating shaft 38 so that the fixed shaft 36 drives the limiting block 37 to rotate so that the limiting block 37 rotates into the limiting groove 9 to limit and fix the protection mechanism 3.

[0030] The above is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present utility model. The structures, devices and operation methods not specifically described and explained in the present utility model, without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. An impeller gland, comprising a cover plate (1), characterized in that: A shaft hole (2) for sleeve-mounting a pump shaft is formed on the front middle side of the cover plate (1), and a cavity (7) for sleeve-mounting an impeller is formed on the rear middle side of the cover plate (1), and the cavity (7) is in continuous communication with the shaft hole (2); A plurality of mounting holes (4) are formed around the front side of the cover plate (1); the rear ends of the plurality of mounting holes (4) are connected to threaded holes (5) formed on the rear side of the cover plate (1); the plurality of threaded holes (5) are respectively threadedly connected to a plurality of bolts (6); and a protective mechanism (3) is provided in each of the plurality of mounting holes (4).

2. The impeller gland according to claim 1, characterized in that: Each of the protection mechanisms (3) comprises a sealing cylinder (31), the sealing cylinder (31) being sleeved in the mounting hole (4), and the front inner side surface of the sealing cylinder (31) being fixedly connected to the front ends of a plurality of telescopic rods (33) and a plurality of springs (34).

3. The impeller gland according to claim 2, characterized in that: The rear ends of the plurality of telescopic rods (33) and the plurality of springs (34) are fixedly connected to the front end of the extrusion plate (39); the plurality of springs (34) are respectively sleeved on the plurality of telescopic rods (33); the rear end of the extrusion plate (39) overlaps the front end of the bolt (6); and the front end of the sealing cylinder (31) is fixedly connected to the rear end of the connecting cylinder (35).

4. The impeller gland according to claim 3, characterized in that: The front end of the connecting cylinder (35) is rotatably connected to the rear end of the fixed shaft (36) via a rolling bearing, a rotating shaft (38) is fixedly provided at the front end of the fixed shaft (36), and the outer middle portion of the fixed shaft (36) is fixedly connected to one end of two limit blocks (37).

5. The impeller gland according to claim 4, characterized in that: The other ends of the two limit blocks (37) are respectively slidably connected in the two limit slots (9), and the two limit slots (9) are both opened in the mounting hole (4) and are both connected to the two slide slots (8).

6. The impeller gland according to claim 5, characterized in that: The two slide grooves (8) are both opened in the mounting hole (4), and the two slide grooves (8) are respectively slidably connected to the opposite ends of the two sealing strips (32), and the opposite ends of the two sealing strips (32) are fixedly connected to the outer side surface of the sealing cylinder (31).

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