JPH0517191U - Turbine pump structure - Google Patents

Abstract

(57) [Summary] [Purpose] Most of the causes of pump failure that makes liquid delivery impossible are
Provided is a turbine pump structure devised so as to eliminate the above-mentioned adhesion and accumulation during use because of the adhesion and accumulation of scum, sludge, etc. at the impeller inlet portion. [Structure] An impeller having a blade (2B) extending in the centrifugal direction on the front surface of a disk-shaped impeller body (2).
In a turbine pump structure in which the motor is driven by being axially supported in the pump chamber, the injection nozzle (4) is provided on the pump chamber side so as to face the center of the front surface of the impeller body (2). It is characterized by being provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a self-contained turbine pump structure which is often used for drainage of sewage and sewage in factories, buildings and the like.

[0002]

[Prior Art]

 In recent years, environmental problems have become more seriously pointed out, and the discharge of factory wastewater is only possible after the required treatment has been performed. For this reason, sewage and sewage are collected in facilities such as underground tanks, and then pumped into public sewer pipes. In this case, in the turbine pump structure used for this type of drainage, sewage, scum in drainage, and sludge accumulate in the pump body, making it impossible to deliver liquid. Such failures can be resolved by disassembling and cleaning the pump.

[0003]

[Problems to be solved by the device]

 However, each time the liquid cannot be delivered, the pump must be stopped, dismantled, and cleaned, so that the wastewater treatment is interrupted in the event of a failure, or the wastewater can only be stored during that time. Must have tank capacity.

[0004]

[The purpose of the device]

 The present invention has been made based on the above circumstances, and most of the causes of the pump failure that makes it impossible to transfer the liquid as described above are caused by the attachment and accumulation of scum, sludge, etc. at the impeller inlet portion. In the process, it is intended to provide a turbine pump structure which is designed to eliminate the above-mentioned adhesion and deposition.

[0005]

[Means for Solving the Problems]

 For this reason, in the present invention, a turbine pump in which an impeller having a blade extending in the centrifugal direction on the front surface of a disk-shaped impeller body is axially supported in a pump chamber and driven by a motor. In the structure, an injection nozzle is provided on the pump chamber side so as to face the center of the front surface of the impeller body.

[0006]

[Action]

 As a result, even if scum, sludge, etc. adhere to and accumulate on the inlet side of the impeller body, the jet water can be jetted continuously, intermittently, or at a desired time from the jet nozzle. Since it can be cleaned, it is possible to avoid the inability to deliver the liquid due to this, the frequency of pump stoppages can be significantly reduced, and continuity of pump operation can be secured.

[0007]

【Example】

Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings. In the turbine pump shown here, the impeller body 2 arranged in the pump body 1 is connected to the output shaft 3A of the external electric motor-3 via the drive shaft 2A thereof. The impeller body 2 is in the form of a disk, and is provided with a plurality of blades 2B extending in the centrifugal direction, leaving the front center portion. The pump chamber formed in the pump main body 1 so as to surround the impeller main body 2 has an inlet 1A communicating with the central part of the front surface of the impeller main body 2 and an outlet communicating with the outer circumference of the impeller main body 2. It is equipped with 1B. And, in particular, the pump chamber is equipped with an injection nozzle 4 facing the central portion of the front surface of the impeller body. The injection nozzle 4 is connected to an external pressure water source such as tap water through a valve 5. Therefore, when the valve 5 is opened, from the injection nozzle 4, the impeller body 2 is flushed with the washing water at a pressure of, for example, ^{2 to 3} kg / cm ² , at a rate of 3 to 6 L / min. Can be sprayed in the center of the front of the. In the figure, reference numeral 6 is a drainage pit, and 7 is a suction pipe to the turbine pump.

In such a structure, as shown in FIG. 2, the turbine motor is driven by the electric motor 3 to drive the turbine pump to drain the water. Even if scum or sludge adheres or accumulates, for example, once a week, open the valve 5 and inject the cleaning water from the injection nozzle 4 into the center of the front of the impeller body 2. It can be disassembled and cleaned. When the amount of scum and sludge attached or accumulated is large, the opening and closing of the valve 5 may be controlled at a predetermined time interval to automatically perform cleaning. Therefore, the pump does not become unable to deliver liquid due to the deposits such as scum and sludge, and the frequency of failures that require operation stop can be significantly reduced, and the sustainability of operation can be ensured.

[0009]

[Effect of the device]

 The present invention has been described in detail above, and an impeller having a blade extending in the eccentric direction on the front of a disk-shaped impeller body is axially supported in a pump chamber to drive a motor. In the turbine pump structure described above, an injection nozzle is provided on the pump chamber side facing the center of the front surface of the impeller body, so that scum, sludge, etc. adhere to and accumulate on the inlet side of the impeller body. Even if an attempt is made, it is possible to clean the jet nozzle by jetting jet water from the jet nozzle continuously or intermittently, or at a desired time. This can be avoided, the frequency of pump stoppage can be significantly reduced, and the practical effect of ensuring continuity of pump operation can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic side view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the above embodiment.

[Explanation of symbols]

 1 Turbin Pump Main Body 2 Impeller Main Body 2A Drive Shaft 2B Blade 3 Electric Motor 4 Injection Nozzle 5 Valve

Claims (1)

[Scope of utility model registration request] 1. A turbine pump structure in which an impeller having a blade extending in the centrifugal direction on the front of a disk-shaped impeller body is axially supported in a pump chamber and is driven by a motor. A turbine pump structure, wherein an injection nozzle is provided on the pump chamber side so as to face the center of the front surface of the impeller body.