JPH04119381U - Pressure pump with loosen box - Google Patents

Abstract

(57) [Summary] [Purpose] This invention is intended for civil engineering treatment such as transporting earth and sand generated during tunnel excavation work and underground pipe burying work to the outside.
In addition, the present invention relates to pressure pumps that can be used for human waste treatment, sewage treatment, industrial wastewater treatment, general chemistry, paper manufacturing raw materials, food processing, etc. [Structure] Between the suction opening of the impeller casing, in which the impeller is rotatably mounted, and the terminal end of the long conveyance pipe, there is a hole that is coaxial with the suction opening and the conveyance pipe, and has a diameter larger than the conveyance pipe. A pressure feed with a loosening box, characterized in that a lump loosening box having a hollow interior is interposed, and a cutting blade is disposed between the suction opening of the impeller casing and the outlet of the lump loosening box. pump.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention aims to remove soil and sand generated during tunnel excavation work and underground piping burying work to the outside. Civil engineering treatment such as transportation, etc., human waste treatment, sewage treatment, industrial wastewater treatment, general chemistry ・Related to pressure pumps that can be used for papermaking raw materials, food processing, etc.

0002

[Conventional technology]

Conventionally, various types of pressure pumps for the above purpose have been known. In one form, the impeller is attached to the output shaft of the motor that extends inside the impeller casing. In addition to the blade, there is also a type with a cutting blade (shredding blade) attached.

0003 With this configuration, even if the waste water, filth, etc. contains small lumps, the cutting blade can can be cut into small pieces or fine pieces, and the small lumps can be directly delivered to the impeller. Collisions can be prevented and the impeller casing can be smoothly pumped to any desired location. I can do that.

0004

[Problem that the idea aims to solve]

However, such pressure pumps still have the following problems.

[0005] In other words, mud generated during tunnel excavation work and pipe burying work performed using the shield method. When soil, etc. is the material to be transported, this mud, etc. contains highly viscous and large-diameter lumps. . However, since the diameter of the conveying pipe is equal to the diameter of the cutting blade attachment part, the mud Soil, etc. collides with the cutting blade as a large-diameter lump, and is not cut and crushed sufficiently, resulting in damage to the cutting blade itself. or the impeller casing, and in some cases may stop these from rotating and cause the motor to In some cases, the equipment was overloaded and burnt out.

[0006] The present invention aims to provide a pressure pump that can solve the above problems. target

[0007]

[Means to solve the problem]

This invention is based on the suction opening of an impeller casing with an impeller rotatably mounted inside. Between the mouth and the terminal end of the long conveyance pipe, the suction opening and the conveyance pipe are coaxial with each other. A lump loosening box with a larger diameter than the conveying pipe and a hollow interior is installed. and between the suction opening of the impeller casing and the outlet of the lump loosening box. This relates to a pressure pump with a loosening box, which is characterized by being equipped with a cutting blade. Ru.

[0008]

[Effect]

During pressure feeding work, when the motor of the pressure pump is driven, the impeller and cutting blade are aligned. The body rotates, and the rotation of the impeller loosens the conveyed materials such as earth and sand into the conveyor pipe and lumps. The material flows into the impeller casing through the cutting box, and the conveyed material is cut off by the cutting blade. is cut into small pieces or strips and then discharged to the outside through a feed pipe.

[0009] In such pressure-feeding work, even if the conveyed material is a large-diameter lump with high viscosity, Since the diameter of the loosening box is larger than the diameter of the conveyor pipe, it is possible to loosen the lumps easily. The box enters a depressurized state, and the conveying pressure inside the box drops rapidly, causing a force that pulls it outward. The lumps transferred from the conveyor pipe to the lump loosening box are then massaged. After that, the mass can be conveyed to the cutting blade in the crushed state. So Therefore, the cutting blade can easily and reliably cut lumps, and the cutting blade and It is possible to prevent lumps from adhering to the impeller.

0010 Furthermore, since the inside of the box for loosening lumps is made as hollow as possible, Smoothly loosens lumps inside the box, and also helps prevent lumps from remaining inside the box. It transports objects without causing any damage.

[0011]

【Example】

Hereinafter, the present invention will be explained in detail based on embodiments shown in the accompanying drawings.

0012 In FIG. 1, the pressure pump 10 is shown installed on the ground 11, and in the figure, 12 is a base that is grounded on the ground 11, and the base 12 has a motor (not shown) on its top. ) is installed in a horizontal position.

[0013] In addition, an impeller 14 is rotatably arranged inside the tip of the motor casing 13. The impeller casing 15 is connected to the bottom plate 15 of the impeller casing 15. A suction opening 16 is provided in the center of a, and a discharge opening 17 is provided in the side wall 15b. Ru.

[0014] Note that the impeller 14 installed inside the impeller casing 15 is installed inside the motor casing 13. It is tied to the tip of the output shaft 18 of the motor built in.

[0015] In addition, a cylindrical lump loosener is installed coaxially at the front of the impeller casing 15. Boxes 19 are arranged in series, and a transport pipe 20 is installed at the rear of the lump loosening box 19. are installed in succession.

[0016] That is, the lump loosening box 19 has the same diameter as the suction opening at its rear. A connecting portion 21 is provided, and a flange 22 forming the rear end of the connecting portion 21 is connected to a connecting bolt. 23 to the bottom plate 15a of the impeller casing 15. It will be connected in communication with the casing 15.

[0017] On the other hand, the lump loosening box 19 has the same diameter as the conveying pipe 20 at its rear. A front connecting part 24 is provided which is coaxial with the other parts, and a flange provided at the front end of the connecting part 24 is provided. The pipe 25 is connected and fixed by the flange 26 provided at the rear end of the conveyor pipe 21 and the connecting bolt 27. As a result, it is communicatively connected to the conveying pipe 21.

[0018] In addition, a rotary cutting blade 28 is fixed to the output shaft 18 at the front part of the impeller 14. The rotary cutting blade 28 is a fixed cutting blade fixed in the suction opening 16 of the impeller casing 15. It cuts and crushes the conveyed object in cooperation with the cutting blade 29.

[0019] In addition, the lump loosening box 19 has a diameter D1 of the diameter D1 of the conveying pipe 20, as shown in the figure. The diameter is significantly larger than D2. Therefore, from the conveyor pipe 20 into the front box 19, The conveyed material containing large diameter and highly viscous lumps (mud, etc.) is loosened. As the conveying pressure drops rapidly inside the box 19, it is loosened by the force pulling outward. This reduces the load on the cutting blades 28, 29 and impeller 14 installed afterwards. Wear.

[0020] In addition, the output shaft 18 has a rotating cutting blade 28 on the front side of the impeller 14, as well as a feeding blade 28. The blades 30 and stirring blades 31 are fixed at a certain interval in the axial direction, and the feed blades 30 is the suction opening 16 of the impeller casing or the rear connection part of the lump loosening box 19 24, and the stirring blade 31 extends to the inside of the lump loosening box 19. .

[0021] In addition, the feed blade 30 cooperates with the impeller 14 to move the conveyed object into the impeller casing 15. The stirring blades 31 are used to forcefully feed In cooperation with the loosening action, the lumps are fed from the conveying pipe 20 into the lump loosening box 19. It is possible to more effectively loosen conveyed materials (such as mud) that contain large diameter and highly viscous lumps. It is possible to reduce the load on the cutting blades 28, 29 and the impeller 14 disposed after the cutting blades 28, 29 and the impeller 14.

[0022] Although the present invention has been explained above with reference to FIG. 1, it is not limited to the configuration shown in the figure. For example, the following modifications are also included in the present invention.

[0023] That is, the shape of the lump loosening box 19 is not limited to the shape shown in FIG. Instead, it can be of the form shown in FIGS. 2 and 3.

[0024] Figure 2 shows the rear part of the lump loosening box 19, whose diameter is gradually reduced toward the rear. It is equipped with a tapered part, and the impeller casing is removed from the lump loosening box 19. The flow of the conveyed material into the inside of the cage 15 can be made smoother.

[0025] On the other hand, FIG. 3 shows that the conveying pipe 19 connected to the lump loosening box 19 is - Place the lump loosening bowl so that it is not on the same line as It is characterized by being connected to the upper wall 19a of the box 19, and the conveyor pipe 19 is This indicates that it can be connected to the lump loosening box 19 even in the form of be.

[0026] In addition, in FIG. 1, the front part of the impeller casing 15 has a rotary cutting blade 28 and a fixed Although the constant cutting blade 29, the feeding blade 30, and the stirring blade 31 are integrated, they are not included in the present invention. If at least either the rotary cutting blade 28 or the fixed cutting blade 29 is provided, For example, the arrangement shown in FIGS. 4 to 7 may be sufficient.

[0027] That is, FIG. 4 shows an arrangement that combines a fixed cutting blade 29, a feeding blade 30, and a stirring blade 31. 5 shows a combined arrangement of a fixed cutting blade 29 and a feed blade 30, and FIG. 6 shows a rotating arrangement. Fig. 7 shows an arrangement that combines a rotating cutting blade 28, a fixed cutting blade 29, and a feeding blade 30; An arrangement is shown in which a cutting blade 28, a fixed cutting blade 29, and a stirring blade 31 are combined.

[0028] Note that other arrangement examples are shown in FIGS. 8 to 13.

[0029]

[Effect of the idea]

With the configuration described above, the present invention has the following effects. In other words, the transported goods and Even if the mud, etc. is viscous and contains large diameter items, the box for loosening the lumps can be used. Since large-diameter lumps can be loosened in advance by This prevents the conveyed material from hitting the cutting blade and adhering to the cutting blade or impeller. It can be force-fed smoothly to any location without any friction, and prevents motor burnout. Ru.

[0030] In addition, we have made the inside of the box for loosening lumps as hollow and wide as possible. This allows smooth loosening of lumps in the same box, and Transport can be carried out without leaving any residue in the box.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a pressure pump according to the present invention.

FIG. 2 is an explanatory diagram of a modified example of the pressure pump.

FIG. 3 is an explanatory diagram of a modified example of the pressure pump.

FIG. 4 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

FIG. 5 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

FIG. 6 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

FIG. 7 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

FIG. 8 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

FIG. 9 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

FIG. 10 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

FIG. 11 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

FIG. 12 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

FIG. 13 is an explanatory diagram of the arrangement of cutting blades, feeding blades, and stirring blades.

[Explanation of symbols]

14 impeller 15 Casing 16 Suction opening 19 Lump loosening box 20 Conveying pipe 28 Rotary cutting blade 29 Fixed cutting blade

Claims (1)

[Scope of utility model registration request] Claim 1: The suction opening (16) is located between the suction opening (16) of the impeller casing (15) in which the impeller (14) is rotatably mounted and the terminal end of the long conveying pipe (20). ) and conveyor pipe (2
A lump loosening box (19) coaxial with the conveyor pipe (20) and having a hollow interior and having a larger diameter than the conveyor pipe (20) is interposed, and the suction opening (16) of the impeller casing (15) ) and the outlet (19a) of the box (19) for loosening lumps.