JPS6154612B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to high viscosity fluid conveyance vehicles, and more particularly to non-sagging materials in the automobile industry, such as vinyl chloride plastisol body sealers, undercoat paints used in the underfloor skin of car bodies, and in the construction industry. This invention relates to a transport vehicle equipped with containers such as tanks suitable for transporting high viscosity fluids such as organic coating materials for interior and exterior use.

In general, low-viscosity fluids are easy to discharge by natural flow using gravity or forced transport at high speed using pumps, so loading and unloading can be streamlined, and large-capacity containers, i.e., tanks Large-capacity means of transportation in the form of containers mounted on cars, vehicles, ships, etc., have become widespread.

However, as seen in the above-mentioned high-viscosity materials, high-viscosity fluids have relatively low viscosity when flowing or stirring due to product design properties.
Under static conditions, the viscosity recovers almost instantaneously,
Depending on the application and product, the viscosity reaches tens of thousands to hundreds of thousands of centipoise, several times higher than the dynamic state, and exhibits almost no fluidity, giving it so-called non-sagging, non-leveling properties. Fillings of highly viscous materials with highly thixotropic properties, i.e. thixotropy;
Traditionally, lorries and containers have been considered unsuitable for transport and discharge, and the waste is transported in small-capacity containers such as conventional drums, pails, and 5-gallon square cans.
Currently, removal is done manually, or in the case of cylindrical cans such as drums and pails, it is discharged using a special air pump or other type of pump, and the removal is carried out by transporting, discharging, and coating. This has become a major bottleneck in labor saving.

To be more specific, these substances may be injected into a large container or tank (lorry) using a pressure pump, or even if they are injected from a material production tank or storage tank by gravity flow or a gear pump with stirring. When discharging high viscosity materials that have recovered to static viscosity, even if the end of the tank or the bottom of the container or the end bottom is fully opened, the discharge speed will be unsatisfactory as long as it depends on gravity. The disadvantage is that a large amount of material in a non-sagging state remains on the inner wall of the container.Especially in tank trucks, it is physically impossible to remove these residual materials from the inner part of the container by manual means such as scraping. There were also quality problems such as the entrapment of bubbles, and it was considered to be completely impractical.

The present invention was developed in order to overcome the difficulties encountered when transporting the above-mentioned high viscosity fluids, especially in a lorry system. A slidable piston plate is provided so that the piston plate can be pressed and moved by a double-acting hydraulic cylinder, and a high viscosity fluid is moved from the starting point of the piston plate to the pressing direction side of the container divided into two by the piston plate. A loading chamber is provided on the opposite side, and a preliminary chamber is provided on the opposite side, and an inlet and an outlet are provided so that high viscosity fluid can be introduced from the upper part of the loading chamber and discharged as the piston plate moves; It is an object of the present invention to provide a high viscosity fluid transport vehicle in which the terminal end of the loading chamber is open and the cargo chamber is closed with a lid body so as to be openable and closable.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of a transport vehicle in which a high-viscosity fluid storage container 1 is placed on a loading platform, and FIG. 2 is a plan view of only the storage container 1 shown in FIG. 1.

The storage container 1 consists of a double tank, and is placed on a loading platform with a slight downward inclination toward the rear. Inside, a sliding piston plate 2 is arranged via gaskets 2a and 2b attached to the inner wall around the periphery, and a pair of parallel double-acting hydraulic cylinders 3 and 3 installed at the front of the container 1 maintain the balance. It is now possible to reciprocate in the XY directions of the arrows by receiving the pressure drive. On the other hand,
The rear end of the container 1 is open, and the opening can be sealed or opened by pivoting the rear lid 4 at its upper end and pivoting it up and down with an opening/closing cylinder 5.

Now, the piston plate 2 is shown at its starting position, and the inside of the container is in the pressing direction of the piston plate 2 (X
Direction) A loading chamber A for high viscosity fluid is formed at the rear, while a preliminary chamber B is formed at the opposite side.

A pair of guide rails 6, 6 extending in the directions of arrows X and Y are provided on both sides of the inner wall of the loading chamber A, and are designed to guide the piston plate 2 so that the reciprocating movement thereof is performed appropriately. . Further, an inlet 7 is provided so that high viscosity fluid can be introduced from the upper part of the cargo compartment. The inlet 7 is located near the rear end of the loading chamber A in the drawing because it also serves as an inspection window for monitoring the state of the high-viscosity fluid when it is discharged, for example, the balance between the liquid level and the discharge speed of the fluid. It is located at the top of the. On the other hand, a discharge port 8 for discharging high viscosity fluid from the cargo compartment A is provided below a rear lid 4 which is pivotally connected to the end of the cargo compartment A so as to be openable and closable in the drawing. Of course, the outlet 8 can also be provided near the end of the container instead of being provided in the rear lid. In addition,
9 is a locking device for the rear cover 4.

On the other hand, the preliminary chamber B is provided with a self-air supply/exhaust port 10 at its upper part to prevent negative pressure or pressurization from occurring that would hinder the movement of the piston plate 2 when it is reciprocally driven. 1
1 is provided so that the preliminary room B can be inspected or cleaned. Note that 11a is a guide cover.

When transporting a high viscosity fluid, the introduction port 7 is opened as shown in the drawing, and the high viscosity fluid is introduced through the introduction port 7. Appropriate amount for cargo compartment A (usually up to 70-80%)
The inlet 7 is filled with high viscosity fluid, and the inlet 7 is closed, and the container is transported to a desired location.

Therefore, the discharge port 8 is connected to a storage tank, and the lever 12 is operated to connect the pair of double-acting hydraulic cylinders 3, 3 via the hydraulic switching valve 13.
is activated to press and move the piston plate 2 in the direction of arrow X. As a result, the dynamic viscosity of the high-viscosity fluid in the inner wall sliding portion decreases due to shear stress caused by the movement, and the fluid sequentially falls from the discharge port 8 into a storage tank (not shown). Thereafter, the lower lever 12' may be operated. Note that 14 is a scaffold. Further, when the piston plate 2 moves, the gaskets 2a and 2b on its periphery slide on the inner wall of the storage container 1, so that the high viscosity fluid adhering to the inner wall is swept away and almost completely discharged.

The piston plate 2 is preferably moved forward so that an excessive load is not applied to the inner wall of the tank, and so that the high viscosity fluid is given a shear rate higher than its yield value at the sliding portion of the wall surface. Such control or inlet 7
The adjustment can be made using the lever 12 while being monitored through the inspection window, or it can be automatically controlled by a conventional method using a separate predetermined detection device.

Loading room A is connected to hydraulic switching valve 13 by lever 12''.
By switching the opening/closing cylinder 5 and operating the opening/closing cylinder 5, the rear cover 4 can be opened to an opening angle of approximately 65°.
Therefore, inspection and cleaning of the interior of the cargo compartment A is easy. On the other hand, the preliminary chamber A can be easily inspected and cleaned by opening the opening lid 11.

Note that although the drawing shows a transport vehicle on which one storage container is placed, a plurality of storage containers having the same function can also be placed thereon.

According to the carrier according to the present invention, even if the static viscosity is hundreds of thousands of centipoise, it can be measured using a thixotropic index (B-type viscometer).
High viscosity fluid with a ratio of viscosity at 2 rpm/viscosity at 20 rpm several times or more can be sufficiently extruded and discharged. Therefore, it becomes possible to transport a large amount of highly viscous fluid. Further, air is not mixed in when discharging from the container as in the conventional case, which is advantageous from a quality standpoint.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a loading section of a high-viscosity fluid transport vehicle according to the present invention, and FIG. 2 is a plan view of a storage container thereof. 1... Storage container, 2... Piston plate, 3... Hydraulic cylinder, 4... Lid, A... Loading room, B...
Spare room.

Claims (1)

[Scope of Claims] 1. A transport vehicle on which a storage container for a high viscosity fluid is mounted, in which a piston plate that can slide on the inner peripheral surface of the storage container is provided, and the piston plate is connected to a hydraulic double-acting cylinder. The interior of the container, which is divided into two parts by the piston plate, is made into a loading chamber for high viscosity fluid on the side of the pressing movement from the starting point of the piston plate, and a reserve chamber on the opposite side. The chamber is provided with an inlet and an outlet for the high viscosity fluid so that the high viscosity fluid can be introduced from the top and discharged as the piston plate is pressed and moved, while the loading chamber has an open end and has a lid. A high viscosity fluid transport vehicle characterized by being able to open and close freely. 2. The transport vehicle according to item 1, wherein at least one pair of guide rails extending in the direction of movement of the piston plate are provided opposite to each other on the inner wall of the loading chamber. 3. The transport vehicle according to item 1, wherein at least one inlet for the high viscosity fluid is provided at the upper end of the terminal end of the loading chamber, and the inlet is provided with an inspection window. 4. The transport vehicle according to item 1, wherein the high viscosity fluid discharge port is provided in a lid body that can be opened and closed and is located at the end of the loading chamber. 5. The transport vehicle according to item 1, which is provided with a self-air supply and discharge port in the upper part of the preliminary chamber. 6. The transport vehicle according to item 1 or 5, which has an opening for inspection and/or cleaning in the preliminary room and is closed so as to be openable and closable. 7. The transport vehicle according to item 1, wherein the piston plate is driven by a pair of double-acting hydraulic cylinders arranged side by side. 8. The transport vehicle according to paragraph 1, on which a plurality of storage containers are placed.