CN1071390A - The gate-valve device of concrete pump - Google Patents

Abstract

Between the front and back bearings of concrete delivery pipe one side actuating device is being installed, is being started this device and just make the S shape in the valve housing shake the pipe left-right rotation, one of them cement concrete pump housing is communicated with hopper, and another is communicated with delivery pipe by shaking pipe.The pump housing piston that is communicated with hopper retreats, and the cement concrete in the hopper is drawn onto in this pump housing, and the pump housing piston that is communicated with delivery pipe then advances, and the cement concrete in this pump housing is sent into delivery pipe.So come and go operation and just cement is sent into delivery pipe continuously.If two opening bores on the valve housing are D, its width between centers is L, and the radius of gyration that shakes pipe is R, then L/2＜

Description

The gate-valve device of concrete pump

The present invention relates to be applied in the gate-valve device on the positive delivery pumps (being referred to as concrete pump in the present invention) such as concrete pump, slurry pump, sludge pump, sand positive delivery pump and high-viscosity fluid positive delivery pump.

The gate-valve device of the piston concrete pump that has earlier is described according to Fig. 3 and 4 below, the 1st, S shape is shaken pipe, the 3rd, hopper, the 2nd, at the gate shell of this hopper bottom processing, 4,4 ' be a pair of cement concrete pump housing arranged side by side, 5,5 ' be the bearing that supporting S shape is shaken pipe 1 both ends, making the S type shake pipe 1 can be shaken, the 6th, S shape is shaken the actuating device of pipe 1, the 7th, concrete delivery pipe, S shape is shaken pipe 1 as shown in Figure 4, selectively with 4,4 ' two openings of the cement concrete pump housing that are installed on the gate shell 2 in an open communication.The bore of these openings is D, and the heart of opening is apart from being L, and the radius that shakes that S shape is shaken pipe 1 is R.In addition, S shape shake pipe 1 bore approximate the cement concrete pump housing 4,4 ' opening bore D.

Having earlier in the concrete pump shown in above-mentioned Fig. 3 and 4, drive installation is at the actuating device 6 of the cement concrete pump housing 4,4 ' side, just can make the gate shell 2 interior S shapes of utilizing bearing 5,5 ' its both ends of supporting shake pipe 1 shakes, hopper 3 and the cement concrete pump housing 4 is communicated with, also make simultaneously the cement concrete pump housing 4 ' and concrete delivery pipe 7 be communicated with.At this moment, concrete piston in the cement concrete pump housing 4 is retreated, cement concrete in the hopper 3 is drawn onto in the cement concrete pump housing 4, and cement concrete 4 ' interior concrete piston then marches forward, and the cement concrete pump housing 4 ' interior cement concrete is shaken pipe 1 through S shape and is transported to concrete delivery pipe 7.

After above-mentioned each concrete piston arrives the terminal point of stroke, be the actuating device 6 of drive installation in the cement concrete pump housing 4,4 ' side, make and shake pipe 1 by the S shapes in the concrete hopper 3 at bearing 5,5 ' its both ends of supporting and shake round about, make the hopper 3 and the cement concrete pump housing 4 ' connection, simultaneously the cement concrete pump housing 4 is communicated with concrete delivery pipe 7.At this moment, the cement concrete pump housing 4 ' inner concrete piston retreats, with the cement concretes in the hopper 3 be drawn onto the cement concrete pump housing 4 ' in, and on the other hand, concrete piston in the cement concrete pump housing 4 then marches forward, and the cement concrete in the cement concrete pump housing 4 is shaken pipe 1 through S shape deliver to concrete delivery pipe 7.

Carry out aforesaid operations subsequently repeatedly, concrete continuous can be sent into concrete delivery pipe 7.

Be shown in the gate-valve device of Fig. 3,4 the concrete pump that has earlier, the actuating device 6 that S shape is shaken pipe 1 be positioned at the cement concrete pump housing 4,4 ' the side.At this moment, supporting S shape shake the bearing 5,5 at pipe 1 both ends ' between distance long, thereby can considerably reduce bearing 5,5 ' by the bearing load that the moment of cement concrete positive delivery pressure (this moment and S shape shake pipe 1 to shake radius R relevant) produces, make bearing 5,5 ' can stably support S shape to shake pipe 1.But on the other hand and since wherein bearing 5 be positioned at the cement concrete pump housing 4,4 ' the side, so can not reduce the radius R that shakes that S shape is shaken pipe 1.Because S shape shake pipe 1 center of turn must be configured in the cement concrete pump housing 4,4 ' top so that the cement concrete pump housing 4,4 ' not influences the rotation that S shape is shaken pipe 1.In this occasion, the center of turn that S shape is shaken pipe 1 is positioned at the top, and its distance must add upper pump casing 4,4 ' wall thickness dimension greater than the size of the cement concrete pump housing 4,4 ' flange protrusion.

As shown in Figure 4, this must be approximately more than the D/5 apart from the δ total.

For this gate-valve device, shake smooth flow in the pipe 1 if make cement concrete in gate housing 2, reach S shape, then must in the scope of permission, reduce the radius R that shakes that S shape is shaken pipe 1 as far as possible.

In addition, cement concrete is drawn onto from hopper 3 the cement concrete pump housing 4,4 ' the time, be the cement concrete residual quantity in gate housing 2 that prevents from the air admission cement concrete pump housing, also must make in Fig. 3,4, to represent with long and short dash line.Concrete residual for reducing, also must aspect the relation of L and D, reduce the radius of gyration R that S shape is shaken pipe 1 as far as possible, L be contained in the cement concrete pump housing 4,4 on the gate valve casing ' the centre distance of two openings, D is the bore of this opening.

, for the gate-valve device that concrete pump is arranged earlier shown in above-mentioned Fig. 3 and 4, as previously mentioned, for fear of bearing 5 and the cement concrete pump housing 4,4 ' and the influence of flange, the radius of gyration R that S shape must be shaken pipe 1 is increased to more than the essential degree.So just, resistance and the cement concrete problem that mobile resistance increases in S shape is shaken pipe 1 that cement concrete flows have been produced in gate valve casing 2.

Explanation in passing, for the gate-valve device of above-mentioned Fig. 3 and 4, the radius of gyration R that S shape is shaken pipe 1 is:

$R>\sqrt{{\left(\frac{L}{2}\right)}^2+{(\frac{7}{10}\×D)}^2}$

Fig. 5 is that another kind has embodiment (if necessary, please refer to the real public clear 63-50464 communique of Japanese publication) earlier, and among this embodiment, S shape is shaken the actuating device of pipe 1 and bearing 5,5 ' the be installed in side of concrete delivery pipe 7.In this occasion, because S shape is shaken pipe 1 actuating device 6 and bearing 5,5 ' be positioned at the side of delivery pipe 7, so can fully reduce the radius of gyration R that S shape is shaken pipe 1.In addition, 4a, 4a ' be the cement concrete pump housing 4,4 ' in the concrete piston that seesaws.

Yet, for shown in Figure 5 gate-valve device arranged earlier, shake pipe 1 in order firmly to support S shape, the lengthening bearing 5,5 ' distance, the total length of gate-valve device extended, and in the occasion of truck mounted concrete pump, the length of gate-valve device has just surpassed the rear portion and has allowed the length of stretching out.In addition, if shorten bearing 5,5 ' between distance, then when the positive delivery cement concrete, then just increased, thereby be difficult to firmly support S shape and shake and manage 1 because S shape is shaken the bearing load that the radius of gyration R of pipe 1 produces.

In view of the above-mentioned problems, the invention provides a kind of gate-valve device of concrete pump, its purpose is, can reduce S shape and shake the radius of gyration of pipe and suck cement concrete smoothly, can reduce the resistance to flow of cement concrete in S shape is shaken pipe simultaneously and reduce the remaining amount of concrete that does not suck that remains in the valve housing.

The present invention also aims to, can reduce to shake the cement concrete volume that pipe is got rid of by S shape in the valve housing, and when sucking cement concrete, can reduce the cement concrete space that produces in the concrete shell.

The present invention also aims to, can shorten the whole length of gate-valve device.

For achieving the above object, in the gate valve of concrete pump of the present invention, making S shape shake pipe rotates in valve housing, cement concrete and the cement concrete between this cement concrete pump housing and the concrete delivery pipe controlled thus between the hopper and a pair of cement concrete pump housing arranged side by side flow, on the gate-valve device of this concrete pump, former and later two bearings that utilization is arranged on concrete delivery pipe one side support above-mentioned S shape and shake pipe, it can be rotated, and between former and later two bearings, the actuating device that S shape is shaken pipe 1 is installed.

In the present invention, opened two openings on the valve housing wall, this opening is communicated with the above-mentioned cement concrete pump housing respectively and optionally is communicated with the sucking hole that above-mentioned S shape is shaken pipe, if the bore of opening is D, the width between centers of this opening is L, and the radius of gyration that this S shape is shaken pipe is R, then

$L/2\≤R\≥\sqrt{{\left(\frac{L}{2}\right)}^2+{(\frac{7}{10}\×D)}^2}$

The gate-valve device of concrete pump of the present invention, as previously mentioned, because utilized former and later two bearing rotatably supports S shape that is installed in concrete delivery pipe one side to shake pipe, and between these two bearings of front and back, the actuating device that S shape is shaken pipe is set, so can fully reduce the radius of gyration that S shape is shaken pipe, thereby can absorb cement concrete smoothly, and can reduce the resistance to flow of cement concrete in S shape is shaken pipe.

In addition, owing to utilized the space between former and later two bearings that actuating device is set, so can shorten the whole length of gate-valve device.

And, for the present invention, because the radius of gyration R that S shape is shaken pipe is in above-mentioned length range, so can reduce the amount of concrete that does not suck residual in the valve housing.Cement concrete can reach S shape and shake smooth flow in the pipe in valve housing.And owing in valve housing, shake the cement concrete volume that pipe gets rid of and reduce, so reduced the cement concrete space that in valve housing, produces when sucking by S shape.

Accompanying drawing is simply described as follows:

Fig. 1 is vertical section lateral plan, and an embodiment of concrete pump gate-valve device of the present invention is shown.

Fig. 2 is the vertical section front elevation that the B-B along Fig. 1 sections.

Fig. 3 is vertical section lateral plan, and the gate-valve device of the concrete pump that has earlier is shown.

Fig. 4 is the vertical cross-section front elevation that the A-A line along Fig. 3 sections.

Fig. 5 is the vertical cross-section lateral plan, and another embodiment of the concrete gate valve gear that has earlier is shown.

Embodiment according to concrete pump gate-valve device shown in Figure 1 illustrates the present invention below, 1 is that S shape is shaken pipe among the figure, the 3rd, hopper, the 2nd, be contained in the valve housing of these hopper 3 bottoms, 4,4 ' be a pair of cement concrete pump housing that is set up in parallel, 4a, 4a ' be the cement concrete pump housing 4,4 ' in the concrete piston that seesaws, the 7th, concrete delivery pipe, 5,5 ' be the front and back bearings that rotatably support S shape is shaken concrete delivery pipe 7 one sides of pipe 1, the 6th, bearing 5,5 ' between the S shape that is provided with shake the actuating device of pipe 1.

As shown in Figure 2, S shape shake the pipe 1 optionally be arranged on valve housing 2 on the cement concrete pump housing 4,4 ' two openings in one be communicated with.The bore of this opening is D, and its width between centers is L, and the radius of gyration that S shape is shaken pipe 1 is R.

Specify the effect of the gate-valve device of above-mentioned concrete pump shown in Figure 1 below.

Starting is arranged on the actuating device 6 between front and back bearings 5,5 ' (side that this bearing supporting S shape is shaken the concrete delivery pipe 7 of pipe 1), make the S shape in the valve housing 2 shake pipe 1 rotation, thereby hopper 3 and the cement concrete pump housing 4 is communicated with, and make simultaneously the cement concrete pump housing 4 ' and concrete delivery pipe 7 be communicated with.At this moment, concrete piston 4a in the cement concrete pump housing 4 retreats, cement concrete in the hopper 3 is drawn onto in the cement concrete pump housing 4, on the other hand, then advance at the cement concrete pump housing 4 ' interior concrete piston 4a ', make at the cement concrete pump housing 4 ' interior cement concrete and shake pipe 1 through S shape and be transported to concrete delivery pipe 7.

When above-mentioned each concrete piston arrives the end of run position, restart and be arranged on the actuating device 6 that is provided with between front and back bearings 5,5 ' (side that this bearing supporting S shape is shaken the concrete delivery pipe 7 of pipe 1), make the S shape in the valve housing 2 shake pipe 1 rotation round about, thereby make the hopper 3 and the cement concrete pump housing 4 ' connection, and the cement concrete pump housing 4 and concrete delivery pipe 7 are communicated with.At this moment, retreat at the cement concrete pump housing 4 ' interior concrete piston 4a ', with the cement concretes in the hopper 3 be drawn onto the cement concrete pump housing 4 ' in, on the other hand, concrete piston 4a in the cement concrete pump housing 4 then advances, and makes cement concrete in the cement concrete pump housing 4 shake pipe 1 through S shape and is transported to concrete delivery pipe 7.

Carry out aforesaid operations subsequently repeatedly, just concrete continuous can be delivered to concrete delivery pipe 7.

Gate-valve device of the present invention because the cement concrete pump housing 4,4 ' a side both do not had bearing 5,5 ', there is not actuating device again, so when decision S shape is shaken the radius of gyration R of pipe 1, can not need fully to consider the cement concrete pump housing 4,4 ' influence, the radius of gyration that shakes pipe 1 can be chosen to be theoretical size.

Fig. 2 shows the size of arrow B among Fig. 1-B cross section part.R is that S shape is shaken pipe 1 the radius of gyration, and D is the bore of each cement concrete pump housing opening, L be each cement concrete pump housing 4,4 ' the width between centers of opening.

As mentioned above, because a side of shaking pipe 1 concrete delivery pipe S shape is provided with front and back bearings 5,5 ' and actuating device 6, these members do not influence the cement concrete pump housing 4,4 ', so the S shape of setting up on physical construction is shaken during range L/2≤R 〉=certain is worthwhile of pipe 1 radius of gyration R, following formula is set up:

$L/2\≤R\≥\sqrt{{\left(\frac{L}{2}\right)}^2+{(\frac{7}{10}\×D)}^2}$

For the gate-valve device shown in the above embodiment, can reduce S shape as far as possible and shake pipe 1 radius of gyration R, thereby can reduce to be shown in the volume of Fig. 1,2 residual concrete (seeing the long and short dash line part), thereby can reduce concrete residual quantity.

In addition, because can reduce the radius of gyration R that S shape is shaken pipe 1 as far as possible, thereby can strengthen the radius that S shape is shaken the curved tube in the pipe 1, so cement concrete can flow in the positive delivery pipeline smoothly, simultaneously, can also reduce in valve housing 2 owing to S shape is shaken the concrete volume that the rotation of pipe 1 is got rid of, thereby the cement concrete space of having reduced generation valve housing 2 in when sucking, thus cement concrete can be sucked in valve housing 2 smoothly the cement concrete pump housing 4,4 '.

As mentioned above, former and later two bearing rotatably supports S shape that the gate-valve device utilization of concrete pump of the present invention is installed in concrete delivery pipe one side is shaken pipe, because shaking the front and back bearings of pipe, rotatably support S shape is positioned at concrete delivery pipe one side, so compare at the example that has earlier of the cement concrete pump housing one side with one of them bearing installation shown in Figure 4, the present invention is easier significantly to reduce the radius of gyration that S shape is shaken pipe 1, cement concrete can be sucked smoothly, and can reduce the resistance that cement concrete flows in S shape is shaken pipe.

Secondly, as mentioned above, the gate-valve device of concrete pump of the present invention is installed in the actuating device that S shape is shaken pipe between former and later two bearings of concrete delivery pipe one side, owing to utilized the space between former and later two bearings that actuating device is installed, so compare with the embodiment that has earlier that actuating device is installed in former and later two bearing outsides (side of concrete delivery pipe) shown in Figure 5, the present invention can shorten the length of whole gate-valve device.

Again secondly,, as mentioned above, the gate-valve device of concrete pump of the present invention be owing to can reduce the radius of gyration R that S shape is shaken pipe 1 as far as possible, thus can reduce among Fig. 1,2 volume with the residual concrete shown in the long and short dash line, thereby can reduce concrete residual quantity.

At last, owing to can reduce the radius of gyration R that S shape is shaken pipe 1 as far as possible, increase S shape and shaken the curved tube radius of managing in 1, so cement concrete can flow in the positive delivery pipeline smoothly, and owing in valve housing, reduced to shake the cement concrete volume that pipe 1 rotation is got rid of by S shape, so reduced the cement concrete space that in valve housing, produces, thus can make cement concrete in valve housing 2, suck smoothly the cement concrete pump housing 4,4 '.

Claims (3)

1, a kind of gate-valve device of concrete pump, this device utilizes S shape to shake the rotation of pipe in valve housing, between the control hopper and a pair of cement concrete pump housing arranged side by side and this cement concrete pump housing and concrete delivery pipe between concrete flowing, it is characterized in that: utilize the above-mentioned S shape of former and later two bearing rotatably supports that is installed in concrete delivery pipe one side to shake pipe, and between these two front and back bearings, the actuating device that S shape is shaken pipe is installed.

2, a kind of gate-valve device of concrete pump, this device utilizes S shape to shake the rotation of pipe in valve housing, between the control hopper and a pair of cement concrete pump housing arranged side by side and this cement concrete pump housing and concrete delivery pipe between concrete flowing, it is characterized in that, two openings on the valve housing wall, have been opened, this opening is communicated with the above-mentioned cement concrete pump housing respectively, and optionally be communicated with the sucking hole that above-mentioned S shape is shaken pipe, if the bore of this opening is D, the width between centers of opening is L, the radius of gyration that S shape is shaken pipe is R, and then following formula is set up:

$L/2\≤R\≥\sqrt{{\left(\frac{L}{2}\right)}^2+{(\frac{7}{10}\×D)}^2}$

3, a kind of valve system of concrete pump, this device utilizes S shape to shake the rotation of pipe in valve housing, between the control hopper and a pair of cement concrete pump housing arranged side by side and this cement concrete pump housing and concrete delivery pipe between concrete flowing, it is characterized in that, the above-mentioned S shape of former and later two bearing rotatably supports that utilization is installed in concrete delivery pipe one side is shaken pipe, the actuating device that S shape is shaken pipe is installed between these two front and back bearings simultaneously, two openings on the valve housing wall, have been opened, this opening is communicated with the above-mentioned cement concrete pump housing respectively, optionally be communicated with the sucking hole that above-mentioned S shape is shaken pipe, if the bore of this opening is D, the width between centers of opening is L, the radius of gyration that this S shape is shaken pipe is R, and then following formula is set up.

$L/2\≤R\≥\sqrt{{\left(\frac{L}{2}\right)}^2+{(\frac{7}{10}\×D)}^2}$

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