JPS5833330B2 - Pharmaceutical injection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for injecting a chemical into the back of a lining, such as an anti-friction agent/backfilling material injection device for the propulsion method, a backfilling material injection device for the shield construction method, and the like.

The propulsion method attaches a shield pipe to the tip of the pipe to be buried or the pipe to be lined, and excavates the ground with the shield pipe.
This is a method of laying pipes, but anti-friction agents and lining materials are injected into the tail voids that occur on the outside of the pipe (lining) due to the propulsion of the shield pipe to reduce the propulsion resistance of the pipe and prevent ground subsidence. It is necessary.

The conventional method of injecting anti-friction agents and backfilling materials in the propulsion method was as shown schematically in Figure 1.

In FIG. 1, 3A and 3B are liquid A and liquid B preparation tanks, respectively.

6 tanks 3A and 3B are filled with the required amount (generally measured by the eye of the worker).

), 1 water, 2 B of cement, and 2 C of talc are added and stirred to prepare a water glass aqueous solution A solution and a cement talc suspension B solution, respectively.

Liquid A and liquid B are sent to conveying pipes 5A and 5B by ground pumps 4A and 4B, respectively, and further merged and mixed in a Y-shaped pipe 6, and then injected into a tail void 8 through an injection valve 7.

Such conventional construction methods have many problems as follows.

(1) Measurement accuracy is poor, reducing the effectiveness of friction reduction and backfilling.

(2) It requires a lot of workers.

Furthermore, if a promotion worker is also responsible for the injection work, it is inefficient because the work during the injection work has to be stopped.

(3) Completion of injection is determined by the rise in pressure of the grout pump and injection is stopped, but at this point there is still chemical remaining in the conveying pipe, which is disposed of as loss.

This loss increases as the propulsion distance increases and the conveying pipe becomes longer, resulting in a large loss in material costs.

(4) After completion of injection, cleaning of the transport pipe etc. tends to be insufficient, often resulting in clogging of the transport pipe.

(5) Since the material storage tank, preparation tank, and grout pump are separated, a large area is required for installation, which is disadvantageous for work in urban areas.

The purpose of the present invention is to be able to move inside the lining and inject the collected wood to any location, to harmonize the injection and cleaning power, to save labor, and to reliably inject only the planned injection amount. An object of the present invention is to provide a material collection injection device with little loss.

The lumber injection device according to the present invention is a device that mixes two types of lumber collection liquids, liquid A and liquid B, and injects the mixture behind the lining.
) to (f) as constituent elements.

(a) A trolley that can travel within the lining and is equipped with an injection-disposal switching valve located close to the injection point, an injection pipe connected to it, and most other equipment, and a vehicle mounted on the trolley. It consists of various conduits that connect the injection/disposal switching valve to the injection/disposal switching valve.

(b) The trolley is equipped with a liquid A stirring tank, a liquid B stirring tank, a water tank, a washing wastewater tank, a liquid-water switching valve, an equal volume pump, an air pressurizing means, and an automatic control means for this device. be.

(c) The A liquid stirring tank and the B liquid stirring tank are each connected to an equal volume pump via a clear water switching valve, and the liquid A and B liquid
Equal amounts of liquid are sucked by the pump, combined at the discharge side of the pump, and sent to the injection/disposal switching valve via a conveying pipe.

(d) A water tank is connected to the liquid-water switching valve, and by switching the valve, water in the water tank is injected through the same route as the A liquid and B liquid while cleaning the route.
It is arranged such that it is sent to the waste switching valve.

(e) The injection/disposal switching valve has a pneumatic piston operated by pressurized air from the air pressurizing means, and is capable of sending liquid from the conveying pipe to the injection pipe or the discharge pipe,
The washing wastewater sent to the discharge pipe is returned to the washing wastewater tank.

(f) The automatic control means consisting of a timer, pressure switch, etc. operates the injection-disposal switching valve and the liquid-water switching valve as described in (c), (d) and (
Demonstrate each function described in e).

Hereinafter, the apparatus of the present invention will be explained based on FIG. 2, which is a process diagram of the injection method using the apparatus of one embodiment of the present invention.

In FIG. 2, 27 is a propulsion pipe (lining), 26 is a tail void, and the equipment surrounded by broken lines 25 is mounted on a truck that can run inside the propulsion pipe 27.

Reference numeral 20 denotes an injection/discard switching valve disposed close to the injection point, and 18 is an injection pipe connected to this valve for injecting the chemical solution.

The cart includes a liquid A stirring tank 12A, a liquid B stirring tank 12B, a water tank 9, a washing waste water tank 22, and a liquid-water switching valve 13.1.
3. Equivalent pumps 14, 14, air pressurizing means 11, and automatic control means for this device are installed.

FIG. 2 shows only the automatic control panel 24 of the automatic control means.

The liquid A and liquid B stirring tanks 12A and 12B are equipped with stirring devices,
Each is connected to the suction side of an isostatic pump 14, 14 via a liquid-water switching valve 13.13.

The equal volume pumps 14, 14 have the same capacity and are driven by one electric motor M, so that they mutually suck and deliver the same amount of liquid.

Equal volume pump 14.14 sucked stirring tank 12A, 12
Liquids A and B of H are combined in a confluence pipe 16 on the discharge side of the pump, thoroughly mixed, and then injected in a conveyance pipe 17.
It is designed to be fed into the waste switching valve 20.

Each of the liquid-water switching valves □3 and 13 has a water tank 9.
is connected, and by switching the valves 13 and 13, the water in the water tank 9 is flushed through the same route as the A liquid and B liquid, and the injection/disposal switching valve 20 is flushed while cleaning the route.
It is intended to be sent to

As shown in FIG. 3, the injection/disposal switching valve 20 forms a cylinder that houses a piston 28.
By introducing pressurized air from the air pressurizing means 11 through the pressurized air conveying pipe 21A or 21B into the cylinder chamber 20A or 20B isolated from the piston 28, the piston 28 and the head 29 connected thereto are lowered or raised. do.

When the head 29 is lowered, as shown in FIG. 3a, the conveying pipe 17 is brought into communication with the injection pipe 18, and since the discharge pipe 19 is closed, the liquid is injected into the tail void 26 through the injection pipe 18.

When the head 29 rises, the injection pipe 18 is closed as shown in FIG.
9, the cleaning waste water can be sent to the discharge pipe 19.

Since the distal end of the discharge pipe 19 is opened onto the washing waste water tank 22, the washing waste water can be returned to the washing waste water tank 22.

Note that by switching the liquid-water switching valves 13 and 13 as described above, the water in the water tank 9 can be sent to the injection-disposal switching valve 20 through the same route as the liquid while cleaning the route. In the embodiment shown in FIG. 2, the water tank 9 can be pressurized.

Cleaning becomes more reliable by supplying pressurized water to the equal volume pumps 14, 14, merging pipe 16, and conveying pipe 17, and if the water in the water tank 9 is set to a predetermined amount in advance, pressurized air can be used to fill the route after cleaning. The cleaning waste water inside can be almost completely discharged.

In the apparatus of the present invention, the above-mentioned injection and washing operations are performed automatically.

That is, the operation of the pump, switching of valves, supply of pressurized air, etc. are set on a timer according to the amount of injection and the amount of washing water, and the work is performed by this timer.

Most of the automatic control means such as timers are built into the automatic control panel 24.

Above, we have described an embodiment in which the device of the present invention is used to inject antifriction agents and backfilling materials in the propulsion construction method. It can also be used for injection.

Since the apparatus of the present invention is constructed and used as described above, many effects such as those described below can be obtained.

(1) Since it can be moved within the lining, planned injection can be carried out at any location.

(2) By compactly organizing each device, 80
Work can be carried out by running the cart inside a propulsion pipe or lining with a pipe diameter of 0 mm or more.

Further, in the case of a small diameter pipe of about 300 to 600 mJ, only the injection/disposal switching valve is disposed at the injection point inside the pipe, and the work can be carried out with the trolley section outside the pipe.

(3) It is possible to save labor.

In other words, one person can work alone.

(4) There is little loss of building materials, and cleaning after pouring is reliably carried out.

[Brief explanation of drawings]

Figure 1 is a process diagram of the injection process of antifriction agent and backfilling material in the conventional propulsion method, and Figure 2 is the injection process of antifriction agent and backfilling material in the propulsion method using the device of one embodiment of the present invention. The process diagram of the construction method, FIGS. 3a and 3b, are explanatory views of the operation of the injection/disposal switching valve in the apparatus of the present invention. In the drawings, 11 is air pressurizing means, 12A and 12B
13 is a liquid-water switching valve, 14 is a stirring tank for liquid A and liquid B, and 13 is a liquid-water switching valve.
is an equal volume pump, 17 is a conveyance pipe, 18 is an injection pipe, 19 is a discharge pipe, 20 is an injection/disposal switching valve, 22 is a washing waste water tank, 24 is an automatic control panel, 25 is a broken line indicating the trolley loading range, 26 is the tail void, 27 is the propulsion pipe (lining), 28
is a pneumatic piston.

Claims (1)

[Scope of Claims] An apparatus for mixing 12 types of chemical liquids, liquid A and liquid B, and injecting the mixture behind the lining, comprising: (a) an injection-disposal switching valve disposed close to the injection point; and an injection pipe connected to this, a trolley that can travel within the lining on which most of the other equipment is mounted, and various conduits that connect the equipment mounted on the trolley and the injection-disposal switching valve, (b) The trolley includes a liquid A stirring tank,
It is equipped with a B liquid stirring tank, a water tank, a washing wastewater tank, a liquid-water switching valve, an equal volume pump, an air pressurizing means, and an automatic control means for this device. (c) The A liquid stirring tank and the B liquid stirring tank are respectively, liquid-
It is connected to an equal volume pump via a water switching valve, and liquids A and B are sucked in equal amounts by the pump, combined at the discharge side of the pump, and sent to the injection/disposal switching valve via a conveying pipe. (d) A water tank is connected to the liquid-water switching valve, and by switching the valve, the water in the water tank is flushed through the same route as the liquid A and liquid B, while cleaning the route. Injection-
(e) The injection/disposal switching valve has an air piston operated by pressurized air from the air pressurizing means, and the liquid is transferred from the conveying pipe to the injection pipe or (f) The automatic control means consisting of a timer, pressure switch, etc. allows the injection/disposal switching valve, liquid - causing the water switching valve to be operated;
A drug injection device characterized by exhibiting each of the functions described in (d) and (e).