JPH1030582A - Rotary discharge pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exhibit original carrying ability regardless of a carrying material by holding a plurality of rotor plates by two disk plate, forming a partition which is tightly closed between the rotor plate and a rotor chamber, and injecting gas in a carrying pipe extending direction to the carrying chamber just lower a lower exhaust hole. SOLUTION: Rotor plates 5 radially installed on a rotor shaft 4 penetrated the center of a rotor chamber 2 are held from both sides by two disk plates, the disc plates are fixed to the rotor shaft 4, and a partition for carrying of slurry and the like is formed. The rotor 3 is rotated in an arrow direction, and the carrying material is put from a hopper 8. When each partition is moved from A to B, the carrying material freely falls down from a discharging hole 9 into a carrying chamber 10, and then the carrying material is stuck. In the carrying chamber 10, air is injected from an injection nozzle 12 toward a carrying pipe direction, and stuck carrying material is transferred to an air injection direction. It is thus possible to perform carrying surely, eliminate a large torque, simplify a structure, and reduce abnormal abrasion.

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. Therefore, in the above conventional example, the load on the rotor is reduced by directly injecting air into the rotor chamber.However, apparently reducing the specific gravity of the slurry increases the volume of the entire slurry, The contradictory problem of reduced transport capacity remains.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a rotary discharge pump capable of exhibiting the original transfer capacity irrespective of the state and quality of a transferred object. With the goal.

In order to achieve the above object, the present invention basically has a rotary discharge pump in which a plurality of radial rotor plates rotate around a rotor shaft in a rotor chamber. It is sandwiched between disks to form a sealed section between the rotor chamber and the upper part of the rotor chamber, a hole for providing a hopper, and a lower part is provided with a discharge hole. On the other hand, a transfer chamber was connected.
A means for extending a transfer pipe from the transfer chamber and injecting gas into the transfer chamber in the direction in which the transfer pipe extends is used. Further, a gap is provided between the rotor chamber and the disk, and a means for injecting a liquid with pressure applied to the gap is also used.

The rotor plate divides the rotor chamber into sections one more than the number of plates, and transports slurry and the like.
The slurry is transported to each of the sealed sections as a section sealed by the rotor plate and the disk. The hopper is for charging the slurry, and the slurry supplied from the hopper falls into the rotor chamber from a hole provided immediately below the hopper. The discharge hole provided below the rotor chamber is directly connected to the transfer chamber, and the slurry is deposited on the transfer chamber by free fall from the discharge hole. 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.

[0007]

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, wherein 1 is a casing, 2 is a rotor chamber, and 3 is a rotor. The rotor 3 is composed of a rotor shaft 4 penetrating through the center of the rotor chamber 2 and rotor plates 5... 5 radially attached from the rotor shaft 4. 6, and the disks 6 are fixed to the rotor shaft 4. Therefore, a section for transporting the slurry or the like is constituted by the two radial rotor plates 5, the two circular plates 6, and the inner wall surface of the rotor chamber 2. Then, by driving the rotor shaft 4 by the motor M, the rotor plate 5 and the disk 6 are rotated. A blade 7 is fixed to the tip of each rotor plate 5 and rotates while being in water-tight contact with the inner peripheral wall of the rotor chamber 2.

Next, 8 is a hopper for guiding a conveyed material such as slurry to the pump, 9 is a discharge hole provided on the lowermost surface of the rotor chamber 2, and 10 is for receiving a conveyed material dropped from the discharge hole 9. A transfer chamber 11 is a transfer pipe connected to the transfer chamber. The transfer pipe 10 is provided in the transfer chamber 10.
An injection nozzle 12 for injecting air in the traveling direction of the air is opened.

According to this configuration, the hopper 8 is positioned where the rotor 3 is rotating in the direction of the arrow by the driving of the motor M.
When the conveyed material such as slurry is introduced from FIG. 2, the conveyed material falls freely from the discharge hole 9 into the transfer chamber 10 and accumulates when the isolated sections move from A to B by the rotation of the rotor 3 in FIG. However, since air is injected from the injection nozzle 12 into the transfer chamber 10 in the direction of travel of the transfer pipe 11, the deposited transfer material is transferred in the direction of air injection. The rotor chamber 2 and the rotor 3
Are in watertight contact. Further, a gap of about several millimeters is provided between each of the disks 6, 6 and the flat side wall of the rotor chamber 2, and a structure is employed in which liquid is constantly injected and pressurized, so that the injection nozzle is provided. The air supplied from 12 does not flow backward or leak, and is efficiently injected toward the transport pipe 11. Therefore, the supplied air efficiently contributes to the transfer of a conveyed object such as a slurry without a pressure loss. Regardless of the specific configuration of the liquid, any liquid or oil can be used as long as it can sufficiently fill the gap and does not allow air to flow backward. However, if the liquid is water, it can be drained after injecting water, but in the case of oil, it should be collected or refluxed and discharged in order not to deteriorate the environment etc. Must be avoided. Considering this point, the liquid to be injected is preferably water.

By the way, the rotor plate 5 is rotated by the rotation of the rotor 3 as described above, and the conveyed material input from the hopper 8 is sent from the position A to the position B and falls into the transfer chamber 10, In the related art, the illustrated portion 4a of the rotor shaft 4 has been worn in the shaft radial direction due to strong friction of a conveyed object such as slurry. However, in the present embodiment, as a rotor shape for conveying the slurry,
Since the structure is closed by the rotor plate 5 and the two disks 6, 6, the rotor shaft 4 is never worn. Further, since the water to which the pressure was applied was constantly injected into the gap, it functioned as a lubricating liquid, and the wear of the rotating part itself was drastically reduced.

[0011]

According to the present invention, a rotor plate and a disk sandwiching the rotor plate in the rotor chamber rotate around the rotor shaft.
Slurry and the like fed from the upper hopper are efficiently sent to the lower transfer chamber with the rotation of the rotor plate, and further sent out to the transfer pipe by gas injection, so that reliable transfer is possible. . In addition, since the rotation of the rotor only performs the function of dropping the slurry supplied from the hopper to each section into the lower transfer chamber, a large torque is not required, the structure can be simplified, and the slurry can be simplified. The effect is great, for example, it is possible to drastically reduce abnormal wear caused by rubbing.

[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 rotor chamber 3 rotor 4 rotor shaft 5 rotor plate 6 disk 7 blade 8 hopper 9 discharge hole 10 transfer chamber 11 transfer pipe 12 injection nozzle

Claims (2)

[Claims] 1. A rotary discharge pump in which a plurality of radial rotor plates rotate around a rotor shaft in a rotor chamber, wherein the plurality of rotor plates are sandwiched between two disks to be in contact with the rotor chamber. A closed section is formed between the rotor chambers, and a hole for providing a hopper is provided at an upper portion of the rotor chamber, and a discharge hole is provided at a lower portion. A transfer pipe is extended from the room,
A rotary discharge pump characterized by further injecting gas into the transfer chamber in the direction in which the transfer pipe extends. 2. The rotary discharge pump according to claim 1, wherein a gap is provided between the rotor chamber and the disk, and a liquid to which pressure is applied is injected into the gap.