JP2935976B2 - Rotary pump - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary discharge pump, and more particularly to a structure for efficiently discharging a slurry or the like, which is discharged, to a downstream transfer pipe.

[0002]

2. Description of the Related Art The inventor has conventionally developed various rotary discharge pumps for discharging slurry and the like generated and settled on a shore. For example, Tokuhei 7-68943
As disclosed in Japanese Patent Application Laid-Open Publication No. H10-209, there is a configuration in which a rotor having blades rotates in a rotor chamber to transport slurry. In this configuration, by supplying air to the rotor chamber, foreign matters around the blade are removed, and at the same time, the specific gravity of the slurry is apparently reduced to improve the pumping ability of the pump.

In such a rotary discharge pump, the discharge capacity is determined by the number of revolutions and the torque of the rotor. However, when the slurry is heavy, the torque of the rotor is lost and the rotation speed becomes low. There is. In this case, there is a serious problem that not only the discharge capability is reduced but also the motor burns. In addition, when the rotor rotates in a watertight state in the rotor chamber and conveys sand or pebbles containing a large amount of high-hardness silicon or the like, the conveyed material is strongly rubbed against the rotor, the rotor shaft or the wall of the rotor chamber. Also, there is a problem that these are worn in a short time due to friction. In this case, not only must the members be replaced, but if the rotor chamber becomes worn, it must be overhauled and a new rotor introduced.
There is also the problem that high costs must be expected for regular repairs.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the wear of the rotating parts and the parts in contact with the conveyed material is small, so that the frequency of repair can be drastically reduced and the operating efficiency can be reduced. It is an object to provide a rotary pump that can be increased.

[0005] In order to achieve the above object, a rotary pump according to the present invention provides a hollow shaft and a hollow shaft.
Rotor plates that are spread out
The rotor wall that shields from the
And multiple rotor chambers
Open the rotor cylinder corresponding to each of these rotor chambers.
A fixed shaft penetrating the hollow shaft,
The rotor pivoted by the
The inner gear provided on the outside is rotated by the drive gear.
On the other hand, a transfer chamber is provided vertically below the rotor, and the transfer chamber
The transfer pipe is extended from
To inject gas into the direction of extension of the transport pipe.
Was the basic configuration. And the rotor corresponds to the entrance
And a casing with an inlet at the top and an outlet at the bottom
Closely housed, the inner gear and drive gear are housed
Pressurized lubricant into the gear chamber,
The gap between the hollow shaft and the sleeve is linked by a thrust disc.
Through the thrust disk
A means for lubricating the gap was used.

[0006]

[0007]

[0008] The rotor plate is configured to transport slurry and the like by configuring the number of rotor chambers corresponding to the number thereof, and is partitioned by the rotor plate, the rotor wall, and the rotor cylinder.
Further, slurry is supplied to each rotor chamber from a plurality of openings provided in the rotor cylinder, and is transported for each section. The slurry is directly connected to the transfer chamber provided directly below the rotor, and the slurry falls from the discharge hole to the transfer chamber by free fall,
accumulate. Gas is constantly or intermittently injected into the transfer chamber, and the slurry or the like deposited by the injection is sent to the transfer pipe. By these actions, the conveyed material such as the slurry put into the hopper is effectively sent out through the convey pipe.

As for the lubrication system, the drive system is lubricated by injecting a lubricating liquid such as water into the gear chamber. The thrust disk is opened according to the pressure, and the lubricating liquid further fills the gap between the hollow shaft and the sleeve. Will flow. And by this means, the friction generated between the hollow shaft and the sleeve is reduced.

[0010]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 show a main part of a rotary discharge pump according to the present invention. In the drawings, reference numeral 1 denotes a casing, 2 denotes a carry-in port provided at an upper portion of the casing 1, and further a hopper (FIG. (Not shown) or a transfer pipe to connect a conveyed material such as slurry. Reference numeral 3 denotes an introduction portion of the carry-in port 2, which has a cylindrical configuration in which a wall is vertically raised from the carry-in port 2. Reference numeral 4 denotes a carry-out port for a conveyed product,
A transfer chamber 5 is provided continuously below the carry-out port 4 vertically. Reference numeral 6 denotes a transfer pipe continuous with the transfer chamber 5, and reference numeral 7 denotes an injection nozzle for injecting air into the transfer chamber 5 in the traveling direction of the transfer pipe 6.

A rotor 8 is rotatably installed inside the casing 1.
And four rotor plates 10 provided radially from the hollow shaft, two rotor walls 11 that shield both ends of the rotor plate 10, and a circle in contact with the outer periphery of the four rotor plates 10. The rotor cylinder 12 has a cross section. An opening 13 corresponding to the size of the carry-in port 2 and the carry-out port 4 is formed between the adjacent rotor plates 10 in the rotor cylinder 12. In this embodiment, the number of the rotor plates is four, but the number of the rotor plates is not particularly limited as long as the strength can be guaranteed. A fixed shaft 14a and a hollow metal sleeve 14b fitted around the fixed shaft 14a are densely inserted into the hollow shaft 9, and the rotor 8 rotates around the fixed shaft 14a as an axis.

Next, the drive system of the rotor 8 will be described. Reference numeral 15 denotes an inner gear fixed to the outside of the one-side rotor wall 11 of the rotor 8, and 16 denotes a drive gear meshing with the inner gear 15 from the inside. The drive shaft of the motor is connected via a reduction gear (both not shown).
17 is a pin for fixing the inner gear 15 to the rotor wall 11. By doing so, the rotor 8
Can rotate stably around the metal sleeve 14b, and the number of teeth of the inner gear 15 can be set large, so that the driving torque of the motor can be sufficiently transmitted to the rotation of the rotor 8.

Next, the lubrication system according to the present embodiment will be described. Reference numeral 18 denotes a gear chamber in which the inner gear 15 and the drive gear 16 are housed, and are sealed by the casing 1 and the rotor wall 11. 19 is the casing 1 on the opposite side of the gear chamber 18
And a space closed by the rotor wall 11. And
The gear chamber 18 and the space 19 are formed by the sleeve 14b and the hollow shaft 9.
Are communicated with each other by a gap 20. 21 is a thrust disk provided between the gear chamber 18 and the gap 20;
When the pressure in the gear chamber 18 becomes high, the valve opens to move the fluid to the gap 20 side. Reference numeral 22 denotes a thrust disk provided between the gap 20 and the space 19. When the gap 20 becomes high in pressure, the valve opens to move the fluid toward the space 19.
In such a configuration, if pressurized water is injected and filled into the gear chamber 18, the water passes through the gap 20 via the thrust disk 21 and further into the space 19 via the thrust disk 22 according to the pressure. It enters and exits through a drain (not shown). Therefore, the lubrication and cooling of the drive system are efficiently performed by this configuration. Reference numerals 23 denote seals for reliably separating the inside of the rotor from the lubrication system.

According to this embodiment, the four rotor chambers A
Through the opening 13 of the rotor 8 is carried into each of the rotor chambers and is transferred to the transfer chamber 5 by rotation of the rotor. Since the air is jetted toward the transport pipe 6, the air moves in the transport pipe 6 by this pressure. On the other hand, the portions where friction occurs, such as the gear chamber 18 or the sleeve 14b and the hollow shaft 9, are constantly lubricated, so that they can rotate smoothly without seizing due to frictional heat. The relationship between the size of each of the rotor chambers A to D and the size of the opening 13 is not particularly limited,
It is preferable to make the opening 13 as large as possible as long as a portion required for the seal 23 can be secured and the strength of the rotor 2 can be guaranteed. That is, by making the opening 13 wider, the amount of slurry remaining in the rotor chamber is reduced, which contributes to efficient transport.

[0015]

According to the present invention, since the rotor is constituted by the hollow shaft, the rotor plate, the rotor wall and the rotor cylinder, a very large strength can be guaranteed as compared with the conventional vane type discharge pump. . In addition, the friction between the waste and the parts in the drive train has been reduced, so the life can be greatly extended compared with the conventional one, and daily maintenance can be simplified. Can be. Further, since the lubrication system is configured as a lubrication system in which the gear chamber and the shaft system are continuous, the configuration is simplified.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a pump according to the present invention.

FIG. 2 is a longitudinal sectional view of the same.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 casing 2 carry-in port 3 introduction section 4 carry-out port 5 transfer chamber 6 transfer pipe 7 injection nozzle 8 rotor 9 hollow shaft 10 rotor plate 11 rotor wall 12 rotor tube 13 opening 14a fixed shaft 14b metal sleeve 15 inner gear 16 drive gear 17 pin 18 Gear chamber 19 Space 20 Gap 21 Thrust disc 22 Thrust disc 23 Seal

Claims (1)

(57) [Claims] 1. A hollow shaft, and radially extending from the hollow shaft.
And shield the rotor plate from both sides.
Rotor wall and a rotor cylinder in contact with the outer periphery of the rotor plate
And a plurality of rotor chambers.
An opening is provided in the rotor cylinder corresponding to each rotor chamber,
The fixed shaft and its sleeve penetrating the hollow shaft
A pivoted rotor is provided on one outer side of the rotor wall.
While the inner gear is rotated by the drive gear, the rotor
A transfer chamber is provided vertically below the transfer chamber.
The transfer pipe is extended, and
Rotary discharge port that injects gas in the extension direction of the pump
Pump, wherein the rotor is guided upward corresponding to the carry-in entrance.
Enclosed in a casing with inlet and outlet below.
And a gear in which the inner gear and the drive gear are housed.
The lubricating fluid is press-fitted into the chamber, and the gear chamber, hollow shaft and
Connect the gap of the leave with the thrust disc,
Lubricate the lubricating liquid into the gap through the thrust disk.
Rotary discharge pump characterized by sliding .