High-pressure concrete mixing pump

Abstract

The utility model relates to the technical field of mixing pumps, in particular to a high-pressure concrete mixing pump which comprises a pump body shell, a servo motor, an impeller and a stirring rod, the servo motor is arranged in the pump body shell and connected with a transmission shaft through a coupler, and the upper end of the transmission shaft is fixedly connected with the impeller and the stirring rod. Through the pump body, when concrete enters from the concrete inlet, the impeller and the stirring rod stir and propel the concrete, so that the concrete is smoothly output through the concrete outlet, when water enters from the water inlet, the impeller compresses and accelerates the concrete, so that the water is fully mixed with the concrete, and the flowability of the concrete is improved; high-pressure stirring and conveying of concrete can be achieved, and the working efficiency and stability of the pump body are improved. The pressure sensor monitors the pressure at the concrete outlet in real time and transmits a signal to the controller, and the controller adjusts the rotating speed of the servo motor according to the signal so that the servo motor can adapt to different working conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing pumps, in particular to a high-pressure concrete mixing pump. Background Art

[0002] A pump body is a machine that converts the mechanical energy of a prime mover into liquid energy. It can lift liquids, transport liquids, or increase the pressure of liquids. Concrete is an artificial stone made of cement, sand, stone and other materials in a certain proportion. It has the advantages of high strength, durability and plasticity, and is widely used in various building structures and projects. In order to transport concrete to where it is needed, a pump body is usually required to provide pressure and flow. The pump body in the related art makes it difficult to fully mix water and concrete while transporting concrete, increase the fluidity of concrete, and cannot automatically adjust the speed of the servo motor according to the internal pressure. In view of this, it is necessary to improve the current pump body to solve the above problems;

[0003] The above information disclosed in this Background section is only for understanding the background of the present inventive concept and therefore it may contain information that does not constitute prior art. Utility Model Content

[0004] The utility model aims to provide a high-pressure concrete mixing pump to solve the problems in the above-mentioned background technology that the pump body is difficult to fully mix water with concrete while conveying concrete, increase the fluidity of concrete, and cannot automatically adjust the speed of the servo motor according to the internal pressure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-pressure concrete mixing pump comprises a pump housing, a servo motor, an impeller and a stirring rod, wherein a servo motor is arranged inside the pump housing, the servo motor is connected to a transmission shaft through a coupling, the upper end of the transmission shaft is fixedly connected to the impeller and the stirring rod, the leading edge of the impeller forms a certain angle with the axis of the transmission shaft, and the lower end of the pump housing is fixedly connected to a base through a supporting column, a concrete inlet and a water inlet are arranged at the upper end of the pump housing, a concrete outlet is arranged on one side of the pump housing, and a pressure sensor is arranged inside the concrete outlet.

[0007] As a preferred technical solution, a hand wheel is provided at the upper end of the concrete outlet.

[0008] As a preferred technical solution, a fan is provided on one side of the servo motor, and a heat dissipation port is provided on one side of the fan.

[0009] As a preferred technical solution, a controller is provided at the lower end of the servo motor, and the controller is electrically connected to the servo motor, the pressure sensor, and the fan.

[0010] The beneficial effects of the utility model are:

[0011] Through this pump body, when concrete enters from the concrete inlet, the impeller and the stirring rod stir and propel it, so that it can be smoothly output through the concrete outlet; when water enters from the water inlet, the impeller compresses and accelerates it, so that it is fully mixed with the concrete, increasing the fluidity of the concrete, and can achieve high-pressure mixing and transportation of concrete, improving the working efficiency and stability of the pump body. The pressure sensor monitors the pressure at the concrete outlet in real time and transmits the signal to the controller; the controller adjusts the speed of the servo motor according to the signal to adapt it to different working conditions; when the outlet water pressure is too high, the controller reduces the speed of the servo motor to prevent the pump body from overloading or damage; when the outlet water pressure is too low, the controller increases the speed of the servo motor to improve the efficiency and effect of the pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a high-pressure concrete mixing pump proposed by the utility model;

[0013] Figure 2 The utility model is a structural schematic diagram of a high-pressure concrete mixing pump impeller.

[0014] In the figure: 1 pump body shell, 2 concrete inlet, 3 water inlet, 4 servo motor, 5 coupling, 6 transmission shaft, 7 impeller, 8 stirring rod, 9 base, 10 support column, 11 fan, 12 heat dissipation port, 13 controller, 14 hand wheel, 15 concrete outlet, 16 pressure sensor. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0018] Reference Figure 1-2 A high-pressure concrete mixing pump includes a pump housing 1, a servo motor 4, an impeller 7 and a stirring rod 8. The servo motor 4 is arranged inside the pump housing 1, and the servo motor 4 is connected to a transmission shaft through a coupling 5. A controller 13 is arranged at the lower end of the servo motor 4, and the controller 13 is electrically connected to the servo motor 4, a pressure sensor 16, and a fan 11.

[0019] The upper end of the transmission shaft 6 is fixedly connected to the impeller 7 and the stirring rod 8. The upper end of the pump housing 1 is provided with a concrete inlet 2 and a water inlet 3, and one side of the pump housing 1 is provided with a concrete outlet 15, and the upper end of the concrete outlet 15 is provided with a hand wheel 14.

[0020] This design can realize high-pressure mixing and conveying of concrete, and improve the working efficiency and stability of the pump body. The specific working principle is: when concrete enters from the concrete inlet 15, the impeller 7 and the stirring rod 8 stir and propel it, so that it can be smoothly output through the concrete outlet 15. When water enters from the water inlet 3, the impeller 7 compresses and accelerates it, so that it is fully mixed with the concrete and the fluidity of the concrete is increased. The impeller 7 is a blade impeller with a forward rake angle, and the leading edge of its blade forms a certain angle with the axis of the transmission shaft 6. When the impeller 7 rotates, the leading edge of the impeller 7 will exert an axial force on the concrete, so that the concrete will be compressed and accelerated in the axial direction. At the same time, the trailing edge of the impeller 7 will exert a circumferential force on the concrete, so that the concrete will produce circumferential centrifugal motion, thereby increasing the pressure and flow of the concrete.

[0021] In other embodiments, a pressure sensor 16 is disposed inside the concrete outlet 15 .

[0022] Through this design, the rotation speed of the servo motor 4 can be automatically adjusted according to the pressure change at the concrete outlet 15 to ensure the safe operation and energy-saving performance of the pump body. The pressure sensor 16 monitors the pressure at the concrete outlet 15 in real time and transmits the signal to the controller 13; the controller 13 adjusts the rotation speed of the servo motor 4 according to the signal to adapt it to different working conditions; when the outlet water pressure is too high, the controller 13 reduces the rotation speed of the servo motor 4 to prevent the pump body from being overloaded or damaged; when the outlet water pressure is too low, the controller 13 increases the rotation speed of the servo motor 4 to improve the efficiency and effect of the pump body;

[0023] In other embodiments, a fan 11 is disposed on one side of the servo motor 4 , and a heat dissipation port 12 is disposed on one side of the fan 11 .

[0024] With this design, the fan 11 can be used to dissipate heat from the servo motor 4, thereby preventing the motor 4 from overheating or being damaged and extending the service life of the pump body. The fan 11 generates airflow on one side of the servo motor 4 and directs the airflow to the motor surface through the heat dissipation port 12; after the airflow contacts the motor surface, it takes away the heat generated by the motor and reduces the temperature of the motor; after the airflow passes through the heat dissipation port 12, it is discharged to the external environment.

[0025] In this embodiment, when concrete enters from the concrete inlet 15, the impeller 7 and the stirring rod 8 stir and propel it so that it can be smoothly output through the concrete outlet 15; when water enters from the water inlet 3, the impeller 7 compresses and accelerates it so that it is fully mixed with the concrete, increasing the fluidity of the concrete, and realizing high-pressure mixing and transportation of the concrete, thereby improving the working efficiency and stability of the pump body. The pressure sensor 16 monitors the pressure at the concrete outlet 15 in real time and transmits the signal to the controller 13; the controller 13 adjusts the speed of the servo motor 4 according to the signal to adapt it to different working conditions; when the outlet water pressure is too high, the controller 13 reduces the speed of the servo motor 4 to prevent the pump body from being overloaded or damaged; when the outlet water pressure is too low, the controller 13 increases the speed of the servo motor 4 to improve the efficiency and effect of the pump body.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-pressure concrete mixing pump, comprising a pump housing (1), a servo motor (4), an impeller (7) and a stirring rod (8), characterized in that: A servo motor (4) is arranged inside the pump housing (1), the servo motor (4) is connected to a transmission shaft (6) via a coupling (5), the upper end of the transmission shaft (6) is fixedly connected to an impeller (7) and a stirring rod (8), the front edge of the impeller (7) and the axis of the transmission shaft (6) form a certain angle, and the lower end of the pump housing (1) is fixedly connected to a base (9) via a support column (10), the upper end of the pump housing (1) is provided with a concrete inlet (2) and a water inlet (3), a concrete outlet (15) is arranged on one side of the pump housing (1), and a pressure sensor (16) is arranged inside the concrete outlet (15).

2. A high pressure concrete mixing pump according to claim 1, characterized in that: A hand wheel (14) is provided at the upper end of the concrete outlet (15).

3. A high pressure concrete mixing pump according to claim 1, characterized in that: A fan (11) is provided on one side of the servo motor (4), and a heat dissipation port (12) is provided on one side of the fan (11).

4. A high pressure concrete mixing pump according to claim 1, characterized in that: A controller (13) is provided at the lower end of the servo motor (4), and the controller (13) is electrically connected to the servo motor (4), the pressure sensor (16), and the fan (11).

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