JP2843513B2 - Crushing 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 crushing pump for transferring a solid or powder contained in a fluid while crushing, stirring and mixing.

[0002]

2. Description of the Related Art Generally, a crushing pump is used in various facilities for handling fluids including solids and semi-solids such as wastewater treatment, general chemical industry, civil engineering industry, food industry, etc. In order to eliminate problems such as road blockage,
A solid material or the like in a fluid is cut and crushed into a uniform size, and is not clogged as a uniform solid-liquid mixture, and crushing and pressure feeding are performed simultaneously.

FIGS. 4 and 5 show a conventional crushing pump of this type. The crushing pump comprises a pump body 1 provided on an upper portion of a base and a motor 5 connected via a coupling 4 to a rotating shaft 3 supported by a bearing mechanism 2 at the rear of the pump body 1. I have.

[0005] As shown in FIG. 5, the pump main body 1 includes an impeller 7 that is rotated by a rotary shaft 3 inside a casing main body 6, and an impeller 7 that is attached to a tip of the rotary shaft 3 and is located on a suction path side of the casing main body 6. A crushing impeller 8 that rotates integrally, an intermediate case 9 fixed by bolts in a suction passage of the casing body 6, and a slight distance between the inner peripheral surface of the intermediate case 9 and the rear surface of the crushing impeller 8. A grid-like fixed blade 10 fixed by forming a gap, a shroud ring 11 similarly provided between the inner peripheral surface of the intermediate case 9 and the crushing impeller 8, and an upstream side of a suction passage of the casing body 6. And a cutting blade 13 penetrating the upper part of the suction casing 12 and having a tip provided with a slight gap in front of the crushing impeller 8. It is mainly composed.

[0005] The crushing pump drives a drive motor 5, and transmits the rotational force of the drive motor 5 to a rotary shaft 3 supported by a bearing mechanism 2 of the pump body 1 via a coupling 4. By rotating the impeller 7 and the crushing impeller 8, the crushing impeller 8 crushes the solid matter in the fluid, and sends the solid matter in the fluid by the impeller 7.

[0006]

However, in the conventional crushing pump, the pump is used mainly for treating large-capacity flow such as wastewater treatment and general chemical industry. The capacity was large, the external shape of the apparatus was large, and the maintenance was complicated. In addition, the object to be processed may be processed in a large amount with the same fluid, and the use is limited. Therefore, once the pump is installed, there is no need to move the object.

[0007] However, in the food industry, since the processing capacity of the objects to be treated is not so large, and since various types of objects must be treated, the crushing pump is frequently started and stopped, The conventional large-sized pump cannot sufficiently exhibit the performance of the pump, is inconvenient to handle, and requires maintenance.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a crushing apparatus which can reduce the size of a pump and can cope with a large number of kinds and small volumes of objects to be processed, and can facilitate handling and maintenance. It is intended to provide a pump.

[0009]

In order to solve the above-mentioned problems, a casing body, a crushing impeller that rotates integrally with the impeller on the suction path side of the casing body, and a predetermined gap on the back of the crushing impeller. A crushing pump having a grid-shaped fixed blade fixed via a rotator, wherein a drive motor is directly attached to a back surface of the casing body, and a rotation shaft of the drive motor and the impeller and the crushing impeller are rotated. And the other end of the rotating shaft of the drive motor is projected from the rear of the drive motor, and a handwheel is attached to the projected portion.

[0010]

[0011]

According to the present invention, the drive motor is directly mounted on the back surface of the casing body, and the rotation shaft of the drive motor and the rotation shaft of the crushing pump are integrated, so that the bearing mechanism on the pump body side and the cup with the drive motor are integrated. No ring or the like is required, the size of the crushing pump is reduced, and the handling and movement of the crushing pump are facilitated. In addition, since the rotary shaft of the pump body and the drive motor are integrated, and the handle is attached to the rear portion of the rotary shaft, the manual operation of the rotary shaft eliminates the need for complicated operations such as assembly, thereby facilitating maintenance.

When the present invention is applied to the mixing of a powder and a liquid in the food industry, for example, the powder is compared with the case of mixing by hand or mixing with a conventional stirrer. Is mixed at the particle level to improve the quality and taste of food, and is most suitable for multi-product and small-lot production.

[0013]

[0014]

Next, the present invention will be described in detail with reference to the drawings. 1 and 2 show a crushing pump according to an embodiment of the present invention. In the figure, the same parts as those shown in the related art are denoted by the same reference numerals, and description thereof will be omitted.

The crushing pump 21 passes through the center of the casing body 22 in which the discharge nozzle 22a is formed, and the rotary shaft 2
The central portion of the rotating shaft 23 is supported by a bearing 24 which also serves as a mechanical seal attached to the center of the casing body 22. On the tip side of the rotating shaft 23, in this embodiment, on the suction passage 25 side, an impeller 26 that rotates inside the casing main body 22 and feeds the fluid from the discharge nozzle 22a via a key is attached via a key. The impeller 26 in the suction passage 25 of the casing body 22
A crushing impeller 27 that rotates integrally with the crusher is attached via the key. The suction side end of the crushing impeller 27 is fixed by a fixing nut 23 b screwed to the tip of the rotating shaft 23.

On the suction passage 25 side of the casing body 22,
The intermediate case 28 is fixed with a fastening bolt 29. In this embodiment, six fastening bolts 29 are provided at equal intervals along the circumferential direction of the intermediate case 28. The intermediate case 28 is O
It is attached to the suction path side inner peripheral surface of the casing body 22 via a ring. A grid-shaped fixed blade 30 is fitted inside the intermediate case 28, and the grid-shaped fixed blade 30 is used for cutting a solid substance in a fluid between the crushing impeller 27 and the back. There is a slight gap between the crushing impeller 27 and the crushing impeller 27.

The grid-shaped fixed blade 30 of this embodiment has a shroud ring 30a formed by projecting forward so that the outer peripheral portion covers the outer peripheral end of the crushing impeller 27, and forms a shroud ring 30a. Inside and crushing impeller 2
The solid material in the fluid sandwiched between the outer cutter 7 and the outer cutter formed on the outer periphery of the cutter 7 is cut and crushed. Intermediate case 28
A suction casing 31 forming a suction passage 25 between itself and the casing main body 22 is fixed to the front surface of the casing with bolts 32. In this embodiment, four bolts 32 are arranged at equal intervals in the circumferential direction. The peripheral end of the shroud ring 30a is formed on the flange surface of the suction casing 31 on the intermediate case 28 side so as to fit through a seal portion.

Further, on the outer peripheral side of the intermediate case 28, an adjustment handle 33 as an adjusting means for positioning the intermediate case 28 with respect to the casing body 22 in the axial direction is provided. The adjusting handle 33 is formed in an annular shape, and has an inner screw formed on an inner circumferential surface thereof to be screwed with an outer screw formed on the outer circumferential surface of the intermediate case 28. The adjusting handle 33 is formed on the outer circumferential surface with a tool (not shown). A plurality of fitting recesses 33a for rotating are formed along the circumferential direction. Then, by rotating the adjustment handle 33 with a tool, the intermediate case 28 is separated from and brought into contact with the front flange surface 22b of the casing body 22, whereby the grid-shaped fixed blade 30 and the crushing impeller 27 fixed to the intermediate case 28 The gap between them is adjusted.

For example, with the tightening bolt 29 loosened,
When the adjustment handle 33 is turned clockwise, the intermediate case 28 is separated from the casing body 22 by a predetermined pitch by a screw action, starting from the contact surface of the adjustment handle 33 with the casing body 22, that is, on the suction path 25 side. Move to. At this time, the grid-shaped fixed blade 30 fixed to the intermediate case 28 moves to the rear side of the crushing impeller 27 and comes into contact with the crushing impeller 27, so that the adjustment handle 33 does not rotate. From this state, the intermediate case 28 is tightened to the casing main body 22 side with the tightening bolts 29, so that the outer screw surface of the intermediate case 28 that has been in contact with one surface of the inner screw of the adjustment handle 33 becomes the inside of the adjustment handle 33. By being pushed back to the other side of the screw, a backlash is returned.

Therefore, by utilizing this effect,
It is possible to adjust the gap of the screw processing tolerance. In the crushing pump of the present embodiment, it is preferable that the gap between the crushing impeller 27 and the grid-shaped fixed blade 30 is adjusted to be about 0.05 mm to 5 mm. Further, by using different materials for the intermediate case 28 and the adjustment handle 33, it is possible to prevent the screw portion from galling.

On the other hand, a flange 22c is formed on the back side of the casing body 22, and a drive motor 35 is directly fixed to the flange 22c with bolts 38.
Further, in this embodiment, the impeller 26 and the crushing impeller 27 are used.
The rotation shaft 23 for rotating the motor is formed integrally with the rotation shaft of the drive motor 35. Further, the other end of the rotation shaft 23 projects outward from the rear of the drive motor 35. Handle 3 when turning by hand during assembly
7 is attached. The rotating shaft 23 may be configured such that the casing body 22 side and the drive motor 35 side are separate bodies, and these are integrated by coupling.

As described above, the crushing pump 2 of this embodiment
According to 1, the drive motor 35 is directly fixed to the casing main body 22 and the casing main body 22 side and the rotating shaft 23 of the drive motor 35 are integrally formed. There is no need to provide a bearing mechanism or coupling with the drive motor, etc. as a separate body,
The crushing pump 21 can be reduced in size and can be adapted to a small amount of processing. In addition, by attaching the handle 37 to the integral rotary shaft 23, the crushing pump 21 can be manually turned during disassembly and maintenance. In addition, complicated operations such as checking the inside of the pump can be omitted.

Further, by fixing the crushing pump 21 on a base with wheels, the crushing pump 21 can be easily moved, and can be moved between various devices. Separation can be easily performed.

Next, a second embodiment of the present invention will be described with reference to FIG. The crushing pump 21 of this embodiment is one in which a casing body 22 is arranged vertically with the suction path side facing upward. The suction casing 3 of the casing body 22
A storage tank 41 for storing the fluid to be processed is provided at an upper portion of the tank 1 via piping parts such as valves. The storage tank 41 is supported from the floor by legs 42, and the crushing pump 2 is mounted on a support 42 a provided at a predetermined height of the legs 42.
1 is supported in a vertical position, and a hopper 43 holding powder mixed with the liquid material in the storage tank 41 is provided above the storage tank 41.
Is provided from the hopper 43 to the screw conveyor 4.
At 4, the powder is transported into the storage tank 41.

In the crushing pump 21 of this embodiment, the discharge nozzle 22a of the casing main body 22 is arranged in a horizontal direction by being disposed in a vertical shape.
A pipe 45 is connected in the horizontal direction to a, and a circulation line 47 that circulates through the three-way valve 46 to the storage tank 41 is provided in the middle of the pipe 45. The horizontal pipe 45 is provided with a drain portion 48 for extracting an internal fluid.

Therefore, the crushing pump 21 of this embodiment
Since the fluid to be treated in the casing body 22 naturally flows out to the pipe 45 side, the suction fluid side is closed during and at the end of the work, and the fluid to be treated in the casing body 22 of the crushing pump 21 is removed from the casing body 22. When the crushing pump 21 of the present embodiment is applied to a food-related fluid to be treated, for example, the fluid to be treated remaining in the casing main body 22 becomes rotten and becomes a problem in food hygiene. It is possible to prevent mixing with a different kind of fluid to be treated and cause a problem.

[0027]

According to the crushing pump of the present invention, a drive motor is directly attached to the back of the casing body, and the rotation shaft of the drive motor is integrated with the rotation shaft for rotating the impeller and the crushing impeller. Since the handle is attached to the rear part, the size of the crushing pump can be reduced, so that it is possible to handle a large variety of small-capacity workpieces, and the handling and maintenance can be easily performed.

[0028]

[Brief description of the drawings]

FIG. 1 is a side view in cross section of a main part of a crushing pump of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a sectional side view of a main part of a second embodiment of the present invention.

FIG. 4 is a side view of a conventional crushing pump.

FIG. 5 is a sectional side view of a conventional crushing pump.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Crushing pump 22 Casing main body 23 Rotating shaft 26 Impeller 27 Crushing impeller 30 Grid fixed blade 35 Drive motor

Claims (1)

(57) [Claims] 1. A casing body, a crushing impeller that rotates integrally with an impeller on a suction path side of the casing body,
A crushing pump comprising a lattice-shaped fixed blade fixed to a back surface of the crushing impeller via a predetermined gap, wherein a drive motor is directly attached to a back surface of the casing body, and a rotation shaft of the drive motor and the While integrating the impeller and the rotating shaft for rotating the crushing impeller, the other end of the rotating shaft of the drive motor is projected from the rear of the drive motor,
A crushing pump characterized in that a handwheel is attached to the projection.