JPH0215860Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention is used in the field of discharging powder and granule from each tank in a trailer-type powder and granule transport vehicle.

(b) Prior Art When discharging powder from a tractor-side tank in a conventional trailer-type powder and granular material carrier, as shown in FIG. 3, a tractor-side discharge pipe 01 and a trailer-side discharge pipe 02 are The gate valve 03 provided in between and the first on-off valve 05 installed in the introduction pipe 04 are set to "open" (the other valves are "closed"), and the compressed air from the compressor 06 is passed through the first on-off valve 05. The tank 0 on the tractor side is passed through the introduction pipe 04 equipped with the first check valve 07.
8 and fluidize the powder.

Next, the first discharge valve 09 is opened, and the powder and granules in the tractor-side tank 08 are discharged through the tractor-side discharge pipe 01.
It is discharged to the outside through the gate valve 03 and the trailer side discharge pipe 02.

However, when discharging the powder and granules from the tractor side tank 08, the second ejector valve 010 and the fourth on-off valve 011 are each set to "open", and the seventh check valve 012 also prevents the powder and granules from getting caught. When malfunction occurs due to malfunction, part of the powder in the tractor side tank 08 is removed from the seventh check valve 012, the second ejector valve 010, the introduction pipe 04, and the fourth on-off valve 0.
11. There was a problem in that it was extremely troublesome to remove the powder and granules that flowed into the bottom of the trailer side tank 014 through the fourth check valve 013.

(c) Problems to be solved by the invention This invention has been made to solve the above-mentioned problems.The invention uses a transmission member to communicate between the gate valve and the second ejector valve, so that when the gate valve is "open", The second ejector valve is closed to prevent part of the powder from flowing into the bottom of the trailer tank while the powder from the tractor tank is being discharged.

(d) Means for solving the problem The feature of the present invention is that compressed air from the compressor is introduced into the bottom of each tank on the tractor side and the tank on the trailer side through an introduction pipe via an on-off valve. In a trailer-type powder and granular material transport vehicle configured to discharge powder and granular material inside the vehicle to the outside through a tractor-side discharge pipe and a trailer-side discharge pipe, a gate valve is provided between the tractor-side discharge pipe and the trailer-side discharge pipe. , an auxiliary pipe in which an ejector valve is interposed is provided between the trailer-side discharge pipe in front of the gate valve and the introduction pipe, and the gate valve and the ejector valve are transmitted by a transmission member, and the transmission member and A play part formed by a long hole is provided at the connecting part with the ejector valve side or the gate valve side, and a protruding member that slides within the play part formed by the long hole is provided on the ejector valve side or the gate valve side, so that the gate valve can be opened. When the gate valve is "closed," the ejector valve is "closed," and when the gate valve is "closed," the ejector valve can be switched to "open" or "closed."

(e) Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings. Reference numeral 1 denotes a cylindrical tractor-side tank, which is composed of a front tank 1a, an intermediate tank 1b, and a rear tank 1c. There is.

Reference numeral 2 denotes a cylindrical trailer side tank, which is composed of a front tank 2a and a rear tank 2b. 3 is the tractor side discharge pipe, and the rear end is the first
The bottoms of the rear tank 1c, intermediate tank 1b, and front tank 1a of the tractor side tank 1 are connected to each other via a discharge valve 4, a second discharge valve 5, and a third discharge valve 6, and the front end thereof is connected to a rubber hose 7. It is connected to the rear end of a trailer-side discharge pipe 8, which will be described later.

8 is a trailer side discharge pipe whose front end is connected to a discharge hose 9, and a fourth discharge valve 10 and a fifth discharge valve are installed in the middle part.
It communicates with the bottoms of the rear tank 2b and front tank 2a of the trailer side tank 2 via a discharge valve 11, respectively, and a gate valve 12 is interposed in the rear part.

By the way, 13 is an introduction pipe connecting the compressor 14 and the bottom of each tank 1, 2, and includes the rear tank 1c of the trailer side tank 1 and the intermediate tank 1.
b. The introduction pipe 13 leading to the front tank 1a has a first on-off valve 15 and a first check valve 16, a second on-off valve 17 and a second check valve 18, and a third on-off valve 19 and a third check valve, respectively. A valve 20 is interposed, and a fourth on-off valve 21, a fourth check valve 22, and a fifth on-off valve 23 are installed in the introduction pipe 13 leading to the rear tank 2b and front tank 2a of the trailer side tank 02, respectively. Fifth check valve 2
4 is interposed, and the introduction pipe 13 connecting the tractor side and the trailer side is further equipped with a sixth on-off valve 25 and an eighth on-off valve 25.
A check valve 26 is interposed.

Next, the rear part of the tractor side discharge pipe 3 and the introduction pipe 13
A first auxiliary pipe 29 with a first ejector valve 27 and a sixth check valve 28 interposed therebetween is provided between the rear part of the trailer side discharge pipe 8 and the introduction pipe 13. A second auxiliary pipe 32 with an ejector valve 30 and a seventh check valve 31 interposed therein is provided.

Next, explaining the transmission member G, which is the main part of the present invention, one end of a bell crank 34 is fixed to the base of the operating lever 33 of the gate valve 12, and the other end of the bell crank 34 is attached to one end of a rod 35. A yoke 36 fixed to the yoke 36 is pivotally supported by a pin 37.

Further, a yoke 39 is provided on the second ejector valve 30 side of the rod 35 and has a play part 43 formed by a long hole formed by a pair of plates 40, 40 and a stopper 41. A protruding member 42 provided at the intermediate portion of the operating lever 38 of 30 is inserted so as to be slidable back and forth. This allows the second ejector valve 30 to be "closed" (position C) when the gate valve 12 is "open" (position A) using the operating lever 33 of the gate valve 12, and the gate valve 12 to be opened (position A). When the gate valve 12 is set to "closed" (position B) by the operation lever 33, the yoke 39 simply moves to the position indicated by the two-dot chain line, and the second ejector valve 30 is set to "closed" (position C).
position), and furthermore, in this state,
The protruding member 42 provided on the operation lever 38 of the second ejector valve 30 slides within the play portion 43 formed by the elongated hole of the yoke 39, thereby allowing the gate valve 1
2 remains "closed", and the second ejector valve 30 can be switched to "open" or "closed".

By the way, in this embodiment, the yoke 39 and the protruding member 4
2 is provided on the ejector valve 30 side,
Even if it is provided on the gate valve 12 side, the same effect can be obtained.

The present invention has the above-mentioned configuration, and when next discharging the powder from the rear tank 1c of the tractor side tank 1, the compressor 14 is first operated and the gate valve 12 and the first on-off valve 15 are opened. (Other valves are closed), the compressed air from the compressor 14 is transferred to the inlet pipe 13, the first on-off valve 1
5. The powder flows into the bottom of the rear tank 1c through the first check valve 16 and fluidizes the powder.

Next, when the first discharge valve 4 is opened, the fluidized powder and granules are transferred to the first discharge valve 4, the tractor side discharge pipe 3, the rubber hose 7, the gate valve 12, the trailer side discharge pipe 8,
It is discharged to the outside through the discharge hose 9.

By the way, at this time, the first ejector valve 27
is opened and the compressed air from the compressor 14 is allowed to flow in from the rear of the tractor-side discharge pipe 3 through the first auxiliary pipe 29, the first ejector valve 27, and the sixth check valve 28, thereby removing the fluidized powder particles. The body can be ejected to a higher place or farther than the normal evacuation described above.

Further, the intermediate tank 1b and the front tank 1a can be discharged in the same manner.

Next, when discharging the powder from the rear tank 2b of the trailer side tank 2, close the gate valve 12.
and turn the sixth on-off valve 25 and fourth on-off valve 21 to "open".
(When the other valves are closed), the compressed air from the compressor 14 is transferred to the inlet pipe 13, the fourth on-off valve 21, and the fourth valve.
It flows into the bottom of the rear tank 2b through the check valve 22 and fluidizes the powder.

Further, when the fourth discharge valve 10 is opened, the fluidized powder is discharged to the outside through the fourth discharge valve 10, the trailer-side discharge pipe 8, and the discharge hose 9.

By the way, at this time, the second ejector valve 30
is opened and the compressed air from the compressor 14 is allowed to flow in from the rear of the trailer-side discharge pipe 8 through the second auxiliary pipe 32, the second ejector valve 30, and the seventh check valve 31, thereby removing the fluidized powder particles. The body can be ejected to a higher place or farther than the normal evacuation described above.

Further, the front tank 2a can be discharged in the same manner.
Here, when discharging the powder and granular material in the tractor-side tank 1, the gate valve 12 is opened. , the operating lever 38 of the second ejector valve 30 is controlled by the transmission member G.
becomes the C position, and the second ejector valve 30 becomes "closed".

Therefore, even if the seventh check valve 31 malfunctions while discharging the powder and granular material in the tractor side tank 1, the second ejector valve 30
is set to "closed," so that a part of the powder does not flow into the bottom of the trailer-side tank 2. Furthermore, when discharging the powder in the trailer tank 2, the gate valve 12 is closed.
When the operation lever 33 of the gate valve 12 is set to the B position and the gate valve 12 is closed, the yoke 39 of the transmission member G simply moves in the direction of the two-dot chain line in FIG. The lever 38 remains in the C position, the second ejector valve 30 remains "closed", and at this time the powder can be normally discharged.

Further, when the operating lever 38 is moved from the C position to the D position, the second ejector valve 30 becomes "open", and at this time, the powder or granular material can be discharged to a high place or a long distance.

(f) Effect of the invention As described above, in this invention, the gate valve and the ejector valve are transmitted by a transmission member, and when the gate valve is "open", the ejector valve is "closed", so that the tank on the tractor side is During the discharge of the powder and granules, a portion of the powder does not flow into the bottom of the tank on the trailer side.

Furthermore, we have made it possible to open or close the ejector valve while keeping the gate valve closed.
It is possible to discharge powder or granules normally or to a high place or a long distance.

[Brief explanation of the drawing]

FIG. 1 is a piping system diagram of the present invention, FIG. 2 is a detailed diagram of the powder discharge control device of the present invention, and FIG. 3 is a conventional piping system diagram. 1 is the tractor side tank, 2 is the trailer side tank, 3 is the tractor side discharge pipe, 4, 5, 6, 10,
11 is an on-off valve, 8 is a trailer side discharge pipe, 12 is a gate valve, 13 is an introduction pipe, 14 is a compressor,
30 is an ejector valve, 32 is an auxiliary pipe, 43
is a play part formed by a long hole, and G is a transmission member.

Claims (1)

[Scope of utility model registration request] Compressed air from the compressor is introduced into the bottom of the tractor-side tank and trailer-side tank through the introduction piping via the on-off valve, and the powder and granules in each tank are discharged to the outside through the tractor-side discharge pipe and the trailer-side discharge pipe. In the trailer-type powder and granular material carrier, a gate valve is provided between the tractor-side discharge pipe and the trailer-side discharge pipe, and an edge valve is provided between the trailer-side discharge pipe and the introduction pipe in front of the gate valve. An auxiliary piping with an ejector valve interposed therein is provided, the gate valve and the ejector valve are transmitted through a transmission member, and a play portion formed by a long hole is provided at the connecting portion between the transmission member and the ejector valve side or the gate valve side. At the same time, a protruding member is provided on the ejector valve side or the gate valve side to slide within the play area formed by the elongated hole, so that when the gate valve is "open", the ejector valve is "closed", and when the gate valve is "closed", the ejector valve is closed. A powder discharge control device for a trailer-type powder and granular material transport vehicle, with a valve that can be switched between "open" and "closed".