JPH04279781A - Installation method for pumping tube - Google Patents

Abstract

PURPOSE:To provide a pumping tube installation method which is excellent in workability, high in safety and time and labor saving to a great extent with affecting no adverse effect to peripheral equipment. CONSTITUTION:In a squeezing type fluid pump 1, a stopper 7 which prevents a roller from passing through, is fitted at the tip end section of a pumping tube 5, and the torque of a rotor 3 is transmitted to the pumping tube 5 as tension force in the longer direction. The pumping tube 5 is slidably moved within a pump casing 2 with the rotor rotated, so that the tube is thereby installed over the pad surface 4 in the inner circumferential surface of the pump casing 2. Since the pumping tube is slidably moved while the torque of the rotor 3 is directly transmitted to the pumping tube 5, installation works can quickly performed without necessitating any detergent and the like for lubrication.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a pumping tube to a squeeze-type fluid pump used for pumping fluids such as concrete.

0002

2. Description of the Related Art Conventionally, the pumping tube of a squeezing type fluid pump has been attached using a roller lock pin method or a manual attachment method. In the roller lock pin method, as shown in FIG. 4, the rotation of the roller 8 is locked with a pin 9, and the pumping tube 1 is
1 was installed by sliding it on. However, with the roller lock pin method, you have to put your hand inside the pump casing 12 to remove the pin 9.
Since it is necessary to charge the rotor 10, there is a risk of getting one's hands caught when the rotor 10 rotates. In the manual installation method, the pumping tube is manually pushed in and installed, which requires a large amount of human power and has poor workability.

[0003] Also, in both of the above two methods,
In order to make the pumping tube slide better when installing it, detergent was applied to it before it was inserted. Therefore, after installation, the inside of the pump casing must be thoroughly washed with water to remove the detergent, which requires a lot of effort and time. Furthermore, during this washing process, water adhered to and penetrated the equipment inside the pump casing, causing rust and causing malfunctions.

0004

[Problems to be Solved by the Invention] The problems to be solved by the present invention are that the workability is extremely good, labor and time can be significantly reduced, safety is high, and there is no adverse effect on peripheral equipment. An object of the present invention is to provide a pumping tube attachment method.

[0005]

[Means for Solving the Problems] The gist of the present invention that solves the above problems is to provide a freely rotatable rotor within a pump casing, and to pivotally support a pumping tube attached to the inner peripheral surface of the pump casing. In a squeezing type fluid pump that is pressed and rolled by a roller, a widening means is provided at the tip of the pumping tube to engage with the roller, and the rotational force of the rotor is transmitted to the pumping tube as a longitudinal tensile force, The pumping tube attachment method is characterized in that the pumping tube is slid within the pump casing by rotation of the rotor and is attached to the inner peripheral surface of the pump casing.

[0006]

[Operation] In the pumping tube mounting method of the present invention, the pumping tube is pulled and slid using the rotational force of the rotor rotating within the pump casing. In other words, by engaging the roller with the widening means provided at the tip of the pumping tube and preventing the roller from passing, the rotational force of the rotor is transmitted to the pumping tube, and the same roller portion of the rotor Pull the pumping tube and slide it inside the pump casing to install it. Since the rotational force of the rotor is directly transmitted to the pumping tube, sliding is smooth and there is no need to use detergent or the like. Further, the effort and time required for installation can be significantly reduced, and workability is also extremely good. Furthermore, since there is no need to put hands inside the pump casing, safety during work is also improved.

[0007]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. Fig. 1 is a partially cutaway longitudinal cross-sectional view showing the embodiment, Fig. 2 is a partially cutaway enlarged view near A in Fig. 1, Fig. 3 is a perspective view showing the stopper, and Fig. 4 is a partially cutaway longitudinal cross-section showing the conventional example. It is a diagram.

The pumping tube attachment method of this embodiment is a method used in a squeezing type fluid pump 1 as shown in FIG. In the squeezing type fluid pump 1, a freely rotatable rotor 3 is provided in a pump casing 2, and a pumping tube 5 attached to a pad 4 on the inner peripheral surface of the pump casing 2 is pressed and rolled by a roller 6 that is pivotally supported on the rotor 3. It is supposed to be done.

In the pumping tube mounting method of this embodiment, a stopper 7 for preventing the passage of the roller 6 is attached to the tip of the pumping tube 5 as a width widening means that engages with the roller 6, and the rotational force of the rotor 3 is applied to the pumping tube. The tension is transmitted to the tube 5 in the longitudinal direction, and the rotation of the rotor 3 causes the pumping tube 5 to slide within the pump casing 2 and is mounted on the pad 4 on the inner peripheral surface of the pump casing 2. That is, the mounting operation is performed by engaging the roller 6 with the insertion portion of the stopper 7 of the pumping tube 5, pulling the pumping tube 5 in the direction of rotation of the rotor 3, and sliding it. The stopper 7 has a shape as shown in FIG.
It can be attached and detached from the end. The stopper 7 may be of any shape as long as it can engage with the roller 6 and prevent the roller 6 from passing, so it may have a shape other than this, and the method of attachment to the pumping tube 5 is also free.

In the pumping tube mounting method of this embodiment, the rotational force of the rotor 3 is directly transmitted to the pumping tube 5, so sliding is performed smoothly and there is no need to use detergent or the like. Therefore, the time and effort required for conventional washing and drying are no longer necessary, and maintenance costs can be reduced. Furthermore, since the equipment does not need to be washed with water, it is possible to prevent the occurrence of rust and to eliminate failures caused by rust. Furthermore, pump casing 2
Since there is no need to put your hands inside, safety during installation work is greatly improved. Note that there is no problem in using detergents, etc.

[0011]

[Effects of the Invention] The present invention provides extremely good workability.
It is possible to provide a pumping tube attachment method that can significantly reduce labor and time, is highly safe, and has no adverse effect on peripheral equipment.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway vertical sectional view showing an embodiment.

FIG. 2 is a partially cutaway enlarged view of the vicinity of A in FIG. 1;

FIG. 3 is a perspective view showing a stopper.

FIG. 4 is a partially cutaway vertical sectional view showing a conventional example.

[Explanation of symbols]

1 Squeezing type fluid pump 2 Pump casing 3 Rotor 4 Putt 5 Pumping tube 6 Roller 7 Stopper 8 Roller 9 pin 10 Rotor 11 Pumping tube 12 Pump casing

Claims (1)

[Claims] [Claim 1] A squeeze-type fluid pump in which a freely rotatable rotor is provided in a pump casing, and a pumping tube attached to the inner peripheral surface of the pump casing is pressed and rolled by a roller pivotally supported by the rotor, wherein the pumping tube is A width widening means is provided at the tip of the roller to engage with the roller,
The rotational force of the rotor is transmitted to the pumping tube as a longitudinal tensile force, and the rotation of the rotor causes the pumping tube to slide within the pump casing and is attached to the inner peripheral surface of the pump casing. How to install the pumping tube.