DE3114115A1 - Cleaning device for the discharge cleaning of the delivery line of a concrete pump - Google Patents

Abstract

The invention relates to a cleaning device for the discharge cleaning of the delivery line of a concrete pump, said cleaning device being installed directly downstream of the pump, between the latter and the delivery line leading on to the distribution point. The aim of this is first to discharge towards the installation point that branch of the delivery line which is to be blocked against return flow at the installation point or from the distribution pole, and in a second step to return the contents of the shorter branch of the delivery line into the feed tank for the pump. This object is achieved by a device similar to a pivot-tube deflector, this device having a connector which can be pivoted onto the delivery line to the installation point and is intended to receive the cleaning sponge (A) and for the arrangement of a pressure-medium connection. This branch of the delivery line is discharged by the pressure medium in conjunction with the cleaning sponge (A) when the pump is shut down. After this branch is discharged, the device is pivoted back to the normal delivery position again and a cleaning sponge (B) is introduced into the discharged line via suitable connections. By suction operation of the pump, the cleaning sponge (B) together with the residual content of this shorter branch of the delivery line is sucked back into the feed tank. <IMAGE>

Description

PATENT ADVOCATE PAUL MUND ERI C H

GRDNDAU-

ROTHeNSERQEW

FRANKFURTER STRASSII (ΙΛ TELEPHONE OCO01 / 37O3

KIHISIURXAIK ULNHAUIIN KTO. St · · ■

FFM. 33β73β-βΟ

o «n 3.4.81 Mu / 1
1/256/81

Patent application

and

Auxiliary utility model registration

WIBAU Industry and Administration GmbH

Wibaustr. 1

6466 Gründau-Rothenbergen

"Cleaning device for emptying cleaning of the delivery line of a concrete pump"

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The invention relates to a cleaning device for emptying cleaning of the conveying line of a Concrete pump equipped with a feed container / its delivery line leading to the installation site usually a placing boom is assigned.

Reiniyuny of the Fördct line of a piston concrete pump takes place, with only short conveying paths at the end of operation usually by sucking the fresh concrete back into the feed container.

The disadvantage here is the accumulation of a relatively large amount of residual concrete (approx. 500 liters), which in the Usually cannot be recovered. The necessary removal of such a large amount from the feed container is always associated with problems, since ultimately it cannot be emptied into the landscape at will.

This situation is made even more difficult if a longer delivery line empties by sucking back shall be. Here, starting from the opening at the installation point, it must be cleaned with a cleaning sponge limited concrete column can be sucked back into the feed container. Apart from the fact that the feed container in many cases cannot completely absorb the volume of concrete flowing back, must When the feed container is emptied, the residual concrete is washed out. This solution is also unsatisfactory, as the washed-out residue can also be a disruptive factor for the construction site.

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Sees another possibility practiced in practice

t before that the delivery line immediately behind the The side of the concrete pump facing the installation site is opened, a cleaning sponge is inserted and the branch of the delivery line pointing to the installation point through an exhaust nozzle to be connected to be introduced pressure medium is emptied to the installation site. However, this measure will made more difficult by the partially flowing back Fresh concrete, which also remains as a larger residual amount.

Regardless of this, the advantage of this procedure is that the relatively long line length emptied to the installation site and the resulting residual concrete can be used.

The object of this invention is to name a device of the type described above, which the advantage of emptying the residual concrete stored in the delivery line as far as possible Installation site and a significant reduction in the volume of concrete to be returned to the feed tank with the simplest manipulation possible.

The solution according to the invention provides

that in a swivel frame on a swivel shaft two pairs of disks each spaced apart are arranged, the inner disks by a in the area of the disk periphery via a Intermediate conveyor line which opens into it on both sides and is axially parallel to the pivot shaft are, while the outer panes are positively fixed on the swivel,

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that the outer disk directed towards the pump has a connecting piece and the panel facing the installation site, i.e. a connecting piece with a branch to the mast is connected for introducing the cleaning sponge B into the connector, this branch is limited by a coupling part and closed by a cover,

that / with the corresponding setting for the pump directed nozzle, the intermediate delivery line and the connecting piece directed towards the installation site, the concrete can be conveyed in the direction of the installation site or, if the conveying line has already been emptied, to the installation site and introduced cleaning sponge B into the connection ^ Lück-bei SaucjbuLriub the one directed towards the pump Branch of the delivery line can be emptied into the feed container,

that on the inner pane pointing in the direction of the installation point - on the same radius as the intermediate delivery line arranged - offset by about 90 ° to this, a pivotable to the connecting piece, limited by coupling part, for the reception of the cleaning sponge A and determined by a cover provided with a detergent connection is provided with a closed socket,

that when the pump is stopped, the corresponding setting of the nozzle and the installation point pointing connection piece and inserted cleaning sponge A and with the pressure medium connection open , the concrete can be emptied through the branch of the delivery line pointing in the direction of the installation point is, and that the pairs of disks are each supported by a clamping ring including a sealing ring are connected rotatably to each other.

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The device according to the invention thus fulfills in the full extent of the demands by division.

When the pump is stopped, the intermediate delivery pipe is swiveled by almost 90 °, a possible one Backflow from the installation point, i.e. shut off from the mast side and the connection of the den Cleaning sponge A with a detergent connection with the only installation point directed branch of the delivery line. Starts with opening the detergent connection the emptying of the delivery line in the direction of the installation site. At the same time, the device takes over in this position the function of a gate valve between the pump and the mast.

This is for the elimination of possibly conceivable malfunctions or for a given need for repairs of great importance.

After the branch of the delivery line directed towards the installation site has been emptied the intermediate conveyor pipe is pivoted back into its normal position and the cleaning sponge B over the branch of the connecting piece pointing in the conveying direction into the connecting piece emptied by the previous step introduced. The pump is switched to suction mode, started up and the contents of this short branch of the delivery line reduced to a minimum now emptied into the feed container.

In the interest of a simple, so-called dead zone avoiding connection of a pressure cylinder to a with the pivot shaft connected lever or pair of levers is provided that the connecting piece to the intermediate ' the delivery line is offset by a smaller angle of less than 90 °.

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In general, an angle of about 85 ° is used.

To ensure good accessibility to the pressure medium connection
as well as an easy introduction of the cleaning sponge A, it is provided that the connection piece is a 45 ° bend.

An easy, unhindered introduction of the cleaning sponge to enable is provided during normal conveyor operation that in the branch of the connector a removable hollow piece corresponding to its inner diameter is introduced.

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The invention is illustrated by the accompanying drawings of an exemplary embodiment explained in more detail.

Figure 1 shows the cleaning device in elevation (I ~ D in the normal conveying position, the right connection in the direction of the Has a mast-directed delivery line.

The 45 ° arc shown in dashed lines is in the same position as the Connection piece to the mast for holding the cleaning sponge A and determines the connection of this sponge to the mast mouth promoting detergent.

A sponge B is inserted into the one facing the mast for pumping back the remaining material The connection piece is inserted through the T-connector attached here and the remaining material is fed through the pump into the feed container sucked back.

Figure 2 shows the side view of the cleaning pre-. direction in viewing direction X, too in funding position.

Figure 3 shows the plan view of the cleaning device in the conveying position.

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The device consists of the disks 5 to 8, of which two in pairs through one one Sealing ring 30 enclosing clamping ring 10 are connected. Here the inner panes 6/7 are each of the Pairs of disks 5/6 and 7/8 to be arranged at a distance from one another are connected by the intermediate conveyor line 11 .

The pairs of discs 5/6 and 7/8 are connected by one of two side cheeks 2 and connecting means, e.g. Collar bolt 3, formed swivel frame 1 carried on a swivel shaft 4 arranged in this / the inner disks 6/7 are each firmly connected to this shaft 4, while the outer disks 5/8 are positively fixed to the swivel frame 1 by any means. In the case of the For example, the bolts 9 arranged in the side cheeks 2 engage in the outer disks 5/8.

On the pivot shaft 4 is a pair of levers 12 for the attack of a double-acting, not shown Pressure cylinder provided.

A connecting piece 13 with coupling part 14, which is directed towards the pump, is assigned to the outer disk 5, while the outer disk 8, the connector 15 with coupling part 16 for connecting the is connected to the mast leading delivery line.

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The junction 17 of the connector 15 is T-shaped connected, which in turn is limited by the coupling part 18 and the cover 19 closed is. In the branch 17 a removable hollow piece 20 is introduced to the filling des for the introduction of the cleaning swan B to be sucked back with concrete or to avoid the like.

On the inner pane 7 is on the same radius as the intermediate conveyor line 11 - but approximately offset by 85 ° to this - a 45 "elbow is arranged. The elbow 21 is for the recording of the cleaning sponge A determined and it is limited by the coupling part 22 and closed by the cover 23 provided with a detergent connection 24. The detergent promotes the sponge A through the mast-side delivery line to the outlet. The cleaning of the delivery line in this direction takes place when the pump is stopped after the sponge has been introduced A in the sheet 21, the subsequent pivoting into a corresponding position to Connection piece 15 and the opening of the detergent connection 24.

After the forward cleaning has been completed, i.e. in the direction of the mate, the intermediate conveyor line 11 pivoted back into the normal position, so that the passage between the parts 15, 11 and 13 is established is. Branch 17

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opened, the hollow piece 2 0 removed, the sponge B inserted into the connection piece 15 and the junction 17 closed again. When the pump is in suction mode, the residual material can be returned to its feed container will.

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Claims (5)

1/256/81 Claims Cleaning device for emptying cleaning of the conveying line with a feed container equipped concrete pump, the delivery line leading to the installation site usually a Is assigned placing boom, characterized in that that in a swivel frame (1) on one Pivot shaft (4) two pairs of discs (5/6) and (7/8) are each arranged at a distance from one another are, the inner disks (6 and 7) by one in the area of the disk periphery via a Intermediate conveyor line which opens into it on both sides and is axially parallel to the pivot shaft (4) (11) are connected while the outer panes (5 and 8) are positively fixed on the swivel frame (1), that the outer disk facing the pump (5) a connection piece (13) and the connection to the installation site, i.e. disc facing the mast (8) a connection piece (15) with branch (17) for introducing the cleaning sponge B into the connection piece (ß) is connected, • * It ψ * 1/256/81 ~ * 2 - this branch (17) being limited by a coupling part (18) and by a cover (19) is locked that, with the corresponding setting of the to the pump directed nozzle (13), the intermediate delivery line (11) and the connecting piece (15) directed towards the installation point, the Concrete can be conveyed in the direction of the installation site or - if the conveying line has already been emptied, to the installation site and the cleaning sponge B inserted in the connection piece (15) - in suction mode the branch of the delivery line directed towards the pump can be emptied into the feed container is, that at the in the direction of the installation point facing inner disc (7) - arranged on the same radius as the intermediate conveyor line (11) - About 90 ° offset to this, a pivotable to the connecting piece (15) through Coupling part (22) limited, intended for receiving the cleaning sponge A and through a cover (23) with a closed connector (21) provided with a detergent connection (24) is provided is, that when the pump is stopped, corresponding Adjustment of the connection piece (21) and the connection piece (15) facing the installation point - 13 - i / 256 / 8iJÜ " ^: - ^.: T 'O.-χί- 31 HI 15 as well as an inserted cleaning sponge A »and with the pressure medium connection (24) open, the concrete can be emptied through the branch of the delivery line pointing in the direction of the installation point, and that the pairs of disks (5/6) and (7/8) respectively rotatably connected to each other by a clamping ring (10) enclosing a sealing ring (30) are. 2. Cleaning device according to claim 1, characterized in that that the connecting piece (21) to the intermediate conveying line (11) is offset by a smaller angle of less than 90 °. 3. Cleaning device according to claim 1 and 2, characterized in that that the connecting piece (21) has a 45 ° bend is. 4. Cleaning device according to claim 1, characterized in that that in the branch (17) of the connector (15) a removable hollow piece (20) corresponding to its inner diameter is introduced is. - • 14 - ■ I- 5. Cleaning device according to claim 1, characterized marked, that the pivot shaft (4) has a lever or pair of levers (12) is connected for the connection of a pressure cylinder. - 15 -